]>
Commit | Line | Data |
---|---|---|
74c21bd0 | 1 | #include "qemu/osdep.h" |
63159601 | 2 | #include "qemu/units.h" |
181962fd | 3 | #include "target/arm/idau.h" |
194cbc49 | 4 | #include "trace.h" |
b5ff1b31 | 5 | #include "cpu.h" |
ccd38087 | 6 | #include "internals.h" |
022c62cb | 7 | #include "exec/gdbstub.h" |
2ef6175a | 8 | #include "exec/helper-proto.h" |
1de7afc9 | 9 | #include "qemu/host-utils.h" |
78027bb6 | 10 | #include "sysemu/arch_init.h" |
9c17d615 | 11 | #include "sysemu/sysemu.h" |
1de7afc9 | 12 | #include "qemu/bitops.h" |
eb0ecd5a | 13 | #include "qemu/crc32c.h" |
0442428a | 14 | #include "qemu/qemu-print.h" |
63c91552 | 15 | #include "exec/exec-all.h" |
f08b6170 | 16 | #include "exec/cpu_ldst.h" |
1d854765 | 17 | #include "arm_ldst.h" |
eb0ecd5a | 18 | #include <zlib.h> /* For crc32 */ |
f1672e6f | 19 | #include "hw/semihosting/semihost.h" |
b2e23725 | 20 | #include "sysemu/cpus.h" |
f3a9b694 | 21 | #include "sysemu/kvm.h" |
24f91e81 | 22 | #include "fpu/softfloat.h" |
9d2b5a58 | 23 | #include "qemu/range.h" |
25a9d6ca | 24 | #include "qapi/qapi-commands-target.h" |
de390645 RH |
25 | #include "qapi/error.h" |
26 | #include "qemu/guest-random.h" | |
0b03bdfc | 27 | |
352c98e5 LV |
28 | #define ARM_CPU_FREQ 1000000000 /* FIXME: 1 GHz, should be configurable */ |
29 | ||
4a501606 | 30 | #ifndef CONFIG_USER_ONLY |
5b2d261d AB |
31 | /* Cacheability and shareability attributes for a memory access */ |
32 | typedef struct ARMCacheAttrs { | |
33 | unsigned int attrs:8; /* as in the MAIR register encoding */ | |
34 | unsigned int shareability:2; /* as in the SH field of the VMSAv8-64 PTEs */ | |
35 | } ARMCacheAttrs; | |
36 | ||
af51f566 | 37 | static bool get_phys_addr(CPUARMState *env, target_ulong address, |
03ae85f8 | 38 | MMUAccessType access_type, ARMMMUIdx mmu_idx, |
af51f566 | 39 | hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot, |
bc52bfeb | 40 | target_ulong *page_size, |
5b2d261d | 41 | ARMMMUFaultInfo *fi, ARMCacheAttrs *cacheattrs); |
7c2cb42b | 42 | |
37785977 | 43 | static bool get_phys_addr_lpae(CPUARMState *env, target_ulong address, |
03ae85f8 | 44 | MMUAccessType access_type, ARMMMUIdx mmu_idx, |
37785977 | 45 | hwaddr *phys_ptr, MemTxAttrs *txattrs, int *prot, |
da909b2c | 46 | target_ulong *page_size_ptr, |
5b2d261d | 47 | ARMMMUFaultInfo *fi, ARMCacheAttrs *cacheattrs); |
37785977 | 48 | |
35337cc3 PM |
49 | /* Security attributes for an address, as returned by v8m_security_lookup. */ |
50 | typedef struct V8M_SAttributes { | |
72042435 | 51 | bool subpage; /* true if these attrs don't cover the whole TARGET_PAGE */ |
35337cc3 PM |
52 | bool ns; |
53 | bool nsc; | |
54 | uint8_t sregion; | |
55 | bool srvalid; | |
56 | uint8_t iregion; | |
57 | bool irvalid; | |
58 | } V8M_SAttributes; | |
59 | ||
333e10c5 PM |
60 | static void v8m_security_lookup(CPUARMState *env, uint32_t address, |
61 | MMUAccessType access_type, ARMMMUIdx mmu_idx, | |
62 | V8M_SAttributes *sattrs); | |
4a501606 PM |
63 | #endif |
64 | ||
affdb64d PM |
65 | static void switch_mode(CPUARMState *env, int mode); |
66 | ||
0ecb72a5 | 67 | static int vfp_gdb_get_reg(CPUARMState *env, uint8_t *buf, int reg) |
56aebc89 PB |
68 | { |
69 | int nregs; | |
70 | ||
71 | /* VFP data registers are always little-endian. */ | |
72 | nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16; | |
73 | if (reg < nregs) { | |
9a2b5256 | 74 | stq_le_p(buf, *aa32_vfp_dreg(env, reg)); |
56aebc89 PB |
75 | return 8; |
76 | } | |
77 | if (arm_feature(env, ARM_FEATURE_NEON)) { | |
78 | /* Aliases for Q regs. */ | |
79 | nregs += 16; | |
80 | if (reg < nregs) { | |
9a2b5256 RH |
81 | uint64_t *q = aa32_vfp_qreg(env, reg - 32); |
82 | stq_le_p(buf, q[0]); | |
83 | stq_le_p(buf + 8, q[1]); | |
56aebc89 PB |
84 | return 16; |
85 | } | |
86 | } | |
87 | switch (reg - nregs) { | |
88 | case 0: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSID]); return 4; | |
b0a909a4 | 89 | case 1: stl_p(buf, vfp_get_fpscr(env)); return 4; |
56aebc89 PB |
90 | case 2: stl_p(buf, env->vfp.xregs[ARM_VFP_FPEXC]); return 4; |
91 | } | |
92 | return 0; | |
93 | } | |
94 | ||
0ecb72a5 | 95 | static int vfp_gdb_set_reg(CPUARMState *env, uint8_t *buf, int reg) |
56aebc89 PB |
96 | { |
97 | int nregs; | |
98 | ||
99 | nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16; | |
100 | if (reg < nregs) { | |
9a2b5256 | 101 | *aa32_vfp_dreg(env, reg) = ldq_le_p(buf); |
56aebc89 PB |
102 | return 8; |
103 | } | |
104 | if (arm_feature(env, ARM_FEATURE_NEON)) { | |
105 | nregs += 16; | |
106 | if (reg < nregs) { | |
9a2b5256 RH |
107 | uint64_t *q = aa32_vfp_qreg(env, reg - 32); |
108 | q[0] = ldq_le_p(buf); | |
109 | q[1] = ldq_le_p(buf + 8); | |
56aebc89 PB |
110 | return 16; |
111 | } | |
112 | } | |
113 | switch (reg - nregs) { | |
114 | case 0: env->vfp.xregs[ARM_VFP_FPSID] = ldl_p(buf); return 4; | |
b0a909a4 | 115 | case 1: vfp_set_fpscr(env, ldl_p(buf)); return 4; |
71b3c3de | 116 | case 2: env->vfp.xregs[ARM_VFP_FPEXC] = ldl_p(buf) & (1 << 30); return 4; |
56aebc89 PB |
117 | } |
118 | return 0; | |
119 | } | |
120 | ||
6a669427 PM |
121 | static int aarch64_fpu_gdb_get_reg(CPUARMState *env, uint8_t *buf, int reg) |
122 | { | |
123 | switch (reg) { | |
124 | case 0 ... 31: | |
125 | /* 128 bit FP register */ | |
9a2b5256 RH |
126 | { |
127 | uint64_t *q = aa64_vfp_qreg(env, reg); | |
128 | stq_le_p(buf, q[0]); | |
129 | stq_le_p(buf + 8, q[1]); | |
130 | return 16; | |
131 | } | |
6a669427 PM |
132 | case 32: |
133 | /* FPSR */ | |
134 | stl_p(buf, vfp_get_fpsr(env)); | |
135 | return 4; | |
136 | case 33: | |
137 | /* FPCR */ | |
138 | stl_p(buf, vfp_get_fpcr(env)); | |
139 | return 4; | |
140 | default: | |
141 | return 0; | |
142 | } | |
143 | } | |
144 | ||
145 | static int aarch64_fpu_gdb_set_reg(CPUARMState *env, uint8_t *buf, int reg) | |
146 | { | |
147 | switch (reg) { | |
148 | case 0 ... 31: | |
149 | /* 128 bit FP register */ | |
9a2b5256 RH |
150 | { |
151 | uint64_t *q = aa64_vfp_qreg(env, reg); | |
152 | q[0] = ldq_le_p(buf); | |
153 | q[1] = ldq_le_p(buf + 8); | |
154 | return 16; | |
155 | } | |
6a669427 PM |
156 | case 32: |
157 | /* FPSR */ | |
158 | vfp_set_fpsr(env, ldl_p(buf)); | |
159 | return 4; | |
160 | case 33: | |
161 | /* FPCR */ | |
162 | vfp_set_fpcr(env, ldl_p(buf)); | |
163 | return 4; | |
164 | default: | |
165 | return 0; | |
166 | } | |
167 | } | |
168 | ||
c4241c7d | 169 | static uint64_t raw_read(CPUARMState *env, const ARMCPRegInfo *ri) |
d4e6df63 | 170 | { |
375421cc | 171 | assert(ri->fieldoffset); |
67ed771d | 172 | if (cpreg_field_is_64bit(ri)) { |
c4241c7d | 173 | return CPREG_FIELD64(env, ri); |
22d9e1a9 | 174 | } else { |
c4241c7d | 175 | return CPREG_FIELD32(env, ri); |
22d9e1a9 | 176 | } |
d4e6df63 PM |
177 | } |
178 | ||
c4241c7d PM |
179 | static void raw_write(CPUARMState *env, const ARMCPRegInfo *ri, |
180 | uint64_t value) | |
d4e6df63 | 181 | { |
375421cc | 182 | assert(ri->fieldoffset); |
67ed771d | 183 | if (cpreg_field_is_64bit(ri)) { |
22d9e1a9 PM |
184 | CPREG_FIELD64(env, ri) = value; |
185 | } else { | |
186 | CPREG_FIELD32(env, ri) = value; | |
187 | } | |
d4e6df63 PM |
188 | } |
189 | ||
11f136ee FA |
190 | static void *raw_ptr(CPUARMState *env, const ARMCPRegInfo *ri) |
191 | { | |
192 | return (char *)env + ri->fieldoffset; | |
193 | } | |
194 | ||
49a66191 | 195 | uint64_t read_raw_cp_reg(CPUARMState *env, const ARMCPRegInfo *ri) |
721fae12 | 196 | { |
59a1c327 | 197 | /* Raw read of a coprocessor register (as needed for migration, etc). */ |
721fae12 | 198 | if (ri->type & ARM_CP_CONST) { |
59a1c327 | 199 | return ri->resetvalue; |
721fae12 | 200 | } else if (ri->raw_readfn) { |
59a1c327 | 201 | return ri->raw_readfn(env, ri); |
721fae12 | 202 | } else if (ri->readfn) { |
59a1c327 | 203 | return ri->readfn(env, ri); |
721fae12 | 204 | } else { |
59a1c327 | 205 | return raw_read(env, ri); |
721fae12 | 206 | } |
721fae12 PM |
207 | } |
208 | ||
59a1c327 | 209 | static void write_raw_cp_reg(CPUARMState *env, const ARMCPRegInfo *ri, |
7900e9f1 | 210 | uint64_t v) |
721fae12 PM |
211 | { |
212 | /* Raw write of a coprocessor register (as needed for migration, etc). | |
721fae12 PM |
213 | * Note that constant registers are treated as write-ignored; the |
214 | * caller should check for success by whether a readback gives the | |
215 | * value written. | |
216 | */ | |
217 | if (ri->type & ARM_CP_CONST) { | |
59a1c327 | 218 | return; |
721fae12 | 219 | } else if (ri->raw_writefn) { |
c4241c7d | 220 | ri->raw_writefn(env, ri, v); |
721fae12 | 221 | } else if (ri->writefn) { |
c4241c7d | 222 | ri->writefn(env, ri, v); |
721fae12 | 223 | } else { |
afb2530f | 224 | raw_write(env, ri, v); |
721fae12 | 225 | } |
721fae12 PM |
226 | } |
227 | ||
200bf5b7 AB |
228 | static int arm_gdb_get_sysreg(CPUARMState *env, uint8_t *buf, int reg) |
229 | { | |
230 | ARMCPU *cpu = arm_env_get_cpu(env); | |
231 | const ARMCPRegInfo *ri; | |
232 | uint32_t key; | |
233 | ||
234 | key = cpu->dyn_xml.cpregs_keys[reg]; | |
235 | ri = get_arm_cp_reginfo(cpu->cp_regs, key); | |
236 | if (ri) { | |
237 | if (cpreg_field_is_64bit(ri)) { | |
238 | return gdb_get_reg64(buf, (uint64_t)read_raw_cp_reg(env, ri)); | |
239 | } else { | |
240 | return gdb_get_reg32(buf, (uint32_t)read_raw_cp_reg(env, ri)); | |
241 | } | |
242 | } | |
243 | return 0; | |
244 | } | |
245 | ||
246 | static int arm_gdb_set_sysreg(CPUARMState *env, uint8_t *buf, int reg) | |
247 | { | |
248 | return 0; | |
249 | } | |
250 | ||
375421cc PM |
251 | static bool raw_accessors_invalid(const ARMCPRegInfo *ri) |
252 | { | |
253 | /* Return true if the regdef would cause an assertion if you called | |
254 | * read_raw_cp_reg() or write_raw_cp_reg() on it (ie if it is a | |
255 | * program bug for it not to have the NO_RAW flag). | |
256 | * NB that returning false here doesn't necessarily mean that calling | |
257 | * read/write_raw_cp_reg() is safe, because we can't distinguish "has | |
258 | * read/write access functions which are safe for raw use" from "has | |
259 | * read/write access functions which have side effects but has forgotten | |
260 | * to provide raw access functions". | |
261 | * The tests here line up with the conditions in read/write_raw_cp_reg() | |
262 | * and assertions in raw_read()/raw_write(). | |
263 | */ | |
264 | if ((ri->type & ARM_CP_CONST) || | |
265 | ri->fieldoffset || | |
266 | ((ri->raw_writefn || ri->writefn) && (ri->raw_readfn || ri->readfn))) { | |
267 | return false; | |
268 | } | |
269 | return true; | |
270 | } | |
271 | ||
b698e4ee | 272 | bool write_cpustate_to_list(ARMCPU *cpu, bool kvm_sync) |
721fae12 PM |
273 | { |
274 | /* Write the coprocessor state from cpu->env to the (index,value) list. */ | |
275 | int i; | |
276 | bool ok = true; | |
277 | ||
278 | for (i = 0; i < cpu->cpreg_array_len; i++) { | |
279 | uint32_t regidx = kvm_to_cpreg_id(cpu->cpreg_indexes[i]); | |
280 | const ARMCPRegInfo *ri; | |
b698e4ee | 281 | uint64_t newval; |
59a1c327 | 282 | |
60322b39 | 283 | ri = get_arm_cp_reginfo(cpu->cp_regs, regidx); |
721fae12 PM |
284 | if (!ri) { |
285 | ok = false; | |
286 | continue; | |
287 | } | |
7a0e58fa | 288 | if (ri->type & ARM_CP_NO_RAW) { |
721fae12 PM |
289 | continue; |
290 | } | |
b698e4ee PM |
291 | |
292 | newval = read_raw_cp_reg(&cpu->env, ri); | |
293 | if (kvm_sync) { | |
294 | /* | |
295 | * Only sync if the previous list->cpustate sync succeeded. | |
296 | * Rather than tracking the success/failure state for every | |
297 | * item in the list, we just recheck "does the raw write we must | |
298 | * have made in write_list_to_cpustate() read back OK" here. | |
299 | */ | |
300 | uint64_t oldval = cpu->cpreg_values[i]; | |
301 | ||
302 | if (oldval == newval) { | |
303 | continue; | |
304 | } | |
305 | ||
306 | write_raw_cp_reg(&cpu->env, ri, oldval); | |
307 | if (read_raw_cp_reg(&cpu->env, ri) != oldval) { | |
308 | continue; | |
309 | } | |
310 | ||
311 | write_raw_cp_reg(&cpu->env, ri, newval); | |
312 | } | |
313 | cpu->cpreg_values[i] = newval; | |
721fae12 PM |
314 | } |
315 | return ok; | |
316 | } | |
317 | ||
318 | bool write_list_to_cpustate(ARMCPU *cpu) | |
319 | { | |
320 | int i; | |
321 | bool ok = true; | |
322 | ||
323 | for (i = 0; i < cpu->cpreg_array_len; i++) { | |
324 | uint32_t regidx = kvm_to_cpreg_id(cpu->cpreg_indexes[i]); | |
325 | uint64_t v = cpu->cpreg_values[i]; | |
721fae12 PM |
326 | const ARMCPRegInfo *ri; |
327 | ||
60322b39 | 328 | ri = get_arm_cp_reginfo(cpu->cp_regs, regidx); |
721fae12 PM |
329 | if (!ri) { |
330 | ok = false; | |
331 | continue; | |
332 | } | |
7a0e58fa | 333 | if (ri->type & ARM_CP_NO_RAW) { |
721fae12 PM |
334 | continue; |
335 | } | |
336 | /* Write value and confirm it reads back as written | |
337 | * (to catch read-only registers and partially read-only | |
338 | * registers where the incoming migration value doesn't match) | |
339 | */ | |
59a1c327 PM |
340 | write_raw_cp_reg(&cpu->env, ri, v); |
341 | if (read_raw_cp_reg(&cpu->env, ri) != v) { | |
721fae12 PM |
342 | ok = false; |
343 | } | |
344 | } | |
345 | return ok; | |
346 | } | |
347 | ||
348 | static void add_cpreg_to_list(gpointer key, gpointer opaque) | |
349 | { | |
350 | ARMCPU *cpu = opaque; | |
351 | uint64_t regidx; | |
352 | const ARMCPRegInfo *ri; | |
353 | ||
354 | regidx = *(uint32_t *)key; | |
60322b39 | 355 | ri = get_arm_cp_reginfo(cpu->cp_regs, regidx); |
721fae12 | 356 | |
7a0e58fa | 357 | if (!(ri->type & (ARM_CP_NO_RAW|ARM_CP_ALIAS))) { |
721fae12 PM |
358 | cpu->cpreg_indexes[cpu->cpreg_array_len] = cpreg_to_kvm_id(regidx); |
359 | /* The value array need not be initialized at this point */ | |
360 | cpu->cpreg_array_len++; | |
361 | } | |
362 | } | |
363 | ||
364 | static void count_cpreg(gpointer key, gpointer opaque) | |
365 | { | |
366 | ARMCPU *cpu = opaque; | |
367 | uint64_t regidx; | |
368 | const ARMCPRegInfo *ri; | |
369 | ||
370 | regidx = *(uint32_t *)key; | |
60322b39 | 371 | ri = get_arm_cp_reginfo(cpu->cp_regs, regidx); |
721fae12 | 372 | |
7a0e58fa | 373 | if (!(ri->type & (ARM_CP_NO_RAW|ARM_CP_ALIAS))) { |
721fae12 PM |
374 | cpu->cpreg_array_len++; |
375 | } | |
376 | } | |
377 | ||
378 | static gint cpreg_key_compare(gconstpointer a, gconstpointer b) | |
379 | { | |
cbf239b7 AR |
380 | uint64_t aidx = cpreg_to_kvm_id(*(uint32_t *)a); |
381 | uint64_t bidx = cpreg_to_kvm_id(*(uint32_t *)b); | |
721fae12 | 382 | |
cbf239b7 AR |
383 | if (aidx > bidx) { |
384 | return 1; | |
385 | } | |
386 | if (aidx < bidx) { | |
387 | return -1; | |
388 | } | |
389 | return 0; | |
721fae12 PM |
390 | } |
391 | ||
392 | void init_cpreg_list(ARMCPU *cpu) | |
393 | { | |
394 | /* Initialise the cpreg_tuples[] array based on the cp_regs hash. | |
395 | * Note that we require cpreg_tuples[] to be sorted by key ID. | |
396 | */ | |
57b6d95e | 397 | GList *keys; |
721fae12 PM |
398 | int arraylen; |
399 | ||
57b6d95e | 400 | keys = g_hash_table_get_keys(cpu->cp_regs); |
721fae12 PM |
401 | keys = g_list_sort(keys, cpreg_key_compare); |
402 | ||
403 | cpu->cpreg_array_len = 0; | |
404 | ||
405 | g_list_foreach(keys, count_cpreg, cpu); | |
406 | ||
407 | arraylen = cpu->cpreg_array_len; | |
408 | cpu->cpreg_indexes = g_new(uint64_t, arraylen); | |
409 | cpu->cpreg_values = g_new(uint64_t, arraylen); | |
410 | cpu->cpreg_vmstate_indexes = g_new(uint64_t, arraylen); | |
411 | cpu->cpreg_vmstate_values = g_new(uint64_t, arraylen); | |
412 | cpu->cpreg_vmstate_array_len = cpu->cpreg_array_len; | |
413 | cpu->cpreg_array_len = 0; | |
414 | ||
415 | g_list_foreach(keys, add_cpreg_to_list, cpu); | |
416 | ||
417 | assert(cpu->cpreg_array_len == arraylen); | |
418 | ||
419 | g_list_free(keys); | |
420 | } | |
421 | ||
68e9c2fe EI |
422 | /* |
423 | * Some registers are not accessible if EL3.NS=0 and EL3 is using AArch32 but | |
424 | * they are accessible when EL3 is using AArch64 regardless of EL3.NS. | |
425 | * | |
426 | * access_el3_aa32ns: Used to check AArch32 register views. | |
427 | * access_el3_aa32ns_aa64any: Used to check both AArch32/64 register views. | |
428 | */ | |
429 | static CPAccessResult access_el3_aa32ns(CPUARMState *env, | |
3f208fd7 PM |
430 | const ARMCPRegInfo *ri, |
431 | bool isread) | |
68e9c2fe EI |
432 | { |
433 | bool secure = arm_is_secure_below_el3(env); | |
434 | ||
435 | assert(!arm_el_is_aa64(env, 3)); | |
436 | if (secure) { | |
437 | return CP_ACCESS_TRAP_UNCATEGORIZED; | |
438 | } | |
439 | return CP_ACCESS_OK; | |
440 | } | |
441 | ||
442 | static CPAccessResult access_el3_aa32ns_aa64any(CPUARMState *env, | |
3f208fd7 PM |
443 | const ARMCPRegInfo *ri, |
444 | bool isread) | |
68e9c2fe EI |
445 | { |
446 | if (!arm_el_is_aa64(env, 3)) { | |
3f208fd7 | 447 | return access_el3_aa32ns(env, ri, isread); |
68e9c2fe EI |
448 | } |
449 | return CP_ACCESS_OK; | |
450 | } | |
451 | ||
5513c3ab PM |
452 | /* Some secure-only AArch32 registers trap to EL3 if used from |
453 | * Secure EL1 (but are just ordinary UNDEF in other non-EL3 contexts). | |
454 | * Note that an access from Secure EL1 can only happen if EL3 is AArch64. | |
455 | * We assume that the .access field is set to PL1_RW. | |
456 | */ | |
457 | static CPAccessResult access_trap_aa32s_el1(CPUARMState *env, | |
3f208fd7 PM |
458 | const ARMCPRegInfo *ri, |
459 | bool isread) | |
5513c3ab PM |
460 | { |
461 | if (arm_current_el(env) == 3) { | |
462 | return CP_ACCESS_OK; | |
463 | } | |
464 | if (arm_is_secure_below_el3(env)) { | |
465 | return CP_ACCESS_TRAP_EL3; | |
466 | } | |
467 | /* This will be EL1 NS and EL2 NS, which just UNDEF */ | |
468 | return CP_ACCESS_TRAP_UNCATEGORIZED; | |
469 | } | |
470 | ||
187f678d PM |
471 | /* Check for traps to "powerdown debug" registers, which are controlled |
472 | * by MDCR.TDOSA | |
473 | */ | |
474 | static CPAccessResult access_tdosa(CPUARMState *env, const ARMCPRegInfo *ri, | |
475 | bool isread) | |
476 | { | |
477 | int el = arm_current_el(env); | |
30ac6339 PM |
478 | bool mdcr_el2_tdosa = (env->cp15.mdcr_el2 & MDCR_TDOSA) || |
479 | (env->cp15.mdcr_el2 & MDCR_TDE) || | |
7c208e0f | 480 | (arm_hcr_el2_eff(env) & HCR_TGE); |
187f678d | 481 | |
30ac6339 | 482 | if (el < 2 && mdcr_el2_tdosa && !arm_is_secure_below_el3(env)) { |
187f678d PM |
483 | return CP_ACCESS_TRAP_EL2; |
484 | } | |
485 | if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TDOSA)) { | |
486 | return CP_ACCESS_TRAP_EL3; | |
487 | } | |
488 | return CP_ACCESS_OK; | |
489 | } | |
490 | ||
91b0a238 PM |
491 | /* Check for traps to "debug ROM" registers, which are controlled |
492 | * by MDCR_EL2.TDRA for EL2 but by the more general MDCR_EL3.TDA for EL3. | |
493 | */ | |
494 | static CPAccessResult access_tdra(CPUARMState *env, const ARMCPRegInfo *ri, | |
495 | bool isread) | |
496 | { | |
497 | int el = arm_current_el(env); | |
30ac6339 PM |
498 | bool mdcr_el2_tdra = (env->cp15.mdcr_el2 & MDCR_TDRA) || |
499 | (env->cp15.mdcr_el2 & MDCR_TDE) || | |
7c208e0f | 500 | (arm_hcr_el2_eff(env) & HCR_TGE); |
91b0a238 | 501 | |
30ac6339 | 502 | if (el < 2 && mdcr_el2_tdra && !arm_is_secure_below_el3(env)) { |
91b0a238 PM |
503 | return CP_ACCESS_TRAP_EL2; |
504 | } | |
505 | if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TDA)) { | |
506 | return CP_ACCESS_TRAP_EL3; | |
507 | } | |
508 | return CP_ACCESS_OK; | |
509 | } | |
510 | ||
d6c8cf81 PM |
511 | /* Check for traps to general debug registers, which are controlled |
512 | * by MDCR_EL2.TDA for EL2 and MDCR_EL3.TDA for EL3. | |
513 | */ | |
514 | static CPAccessResult access_tda(CPUARMState *env, const ARMCPRegInfo *ri, | |
515 | bool isread) | |
516 | { | |
517 | int el = arm_current_el(env); | |
30ac6339 PM |
518 | bool mdcr_el2_tda = (env->cp15.mdcr_el2 & MDCR_TDA) || |
519 | (env->cp15.mdcr_el2 & MDCR_TDE) || | |
7c208e0f | 520 | (arm_hcr_el2_eff(env) & HCR_TGE); |
d6c8cf81 | 521 | |
30ac6339 | 522 | if (el < 2 && mdcr_el2_tda && !arm_is_secure_below_el3(env)) { |
d6c8cf81 PM |
523 | return CP_ACCESS_TRAP_EL2; |
524 | } | |
525 | if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TDA)) { | |
526 | return CP_ACCESS_TRAP_EL3; | |
527 | } | |
528 | return CP_ACCESS_OK; | |
529 | } | |
530 | ||
1fce1ba9 PM |
531 | /* Check for traps to performance monitor registers, which are controlled |
532 | * by MDCR_EL2.TPM for EL2 and MDCR_EL3.TPM for EL3. | |
533 | */ | |
534 | static CPAccessResult access_tpm(CPUARMState *env, const ARMCPRegInfo *ri, | |
535 | bool isread) | |
536 | { | |
537 | int el = arm_current_el(env); | |
538 | ||
539 | if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TPM) | |
540 | && !arm_is_secure_below_el3(env)) { | |
541 | return CP_ACCESS_TRAP_EL2; | |
542 | } | |
543 | if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TPM)) { | |
544 | return CP_ACCESS_TRAP_EL3; | |
545 | } | |
546 | return CP_ACCESS_OK; | |
547 | } | |
548 | ||
c4241c7d | 549 | static void dacr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) |
c983fe6c | 550 | { |
00c8cb0a AF |
551 | ARMCPU *cpu = arm_env_get_cpu(env); |
552 | ||
8d5c773e | 553 | raw_write(env, ri, value); |
d10eb08f | 554 | tlb_flush(CPU(cpu)); /* Flush TLB as domain not tracked in TLB */ |
c983fe6c PM |
555 | } |
556 | ||
c4241c7d | 557 | static void fcse_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) |
08de207b | 558 | { |
00c8cb0a AF |
559 | ARMCPU *cpu = arm_env_get_cpu(env); |
560 | ||
8d5c773e | 561 | if (raw_read(env, ri) != value) { |
08de207b PM |
562 | /* Unlike real hardware the qemu TLB uses virtual addresses, |
563 | * not modified virtual addresses, so this causes a TLB flush. | |
564 | */ | |
d10eb08f | 565 | tlb_flush(CPU(cpu)); |
8d5c773e | 566 | raw_write(env, ri, value); |
08de207b | 567 | } |
08de207b | 568 | } |
c4241c7d PM |
569 | |
570 | static void contextidr_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
571 | uint64_t value) | |
08de207b | 572 | { |
00c8cb0a AF |
573 | ARMCPU *cpu = arm_env_get_cpu(env); |
574 | ||
452a0955 | 575 | if (raw_read(env, ri) != value && !arm_feature(env, ARM_FEATURE_PMSA) |
014406b5 | 576 | && !extended_addresses_enabled(env)) { |
08de207b PM |
577 | /* For VMSA (when not using the LPAE long descriptor page table |
578 | * format) this register includes the ASID, so do a TLB flush. | |
579 | * For PMSA it is purely a process ID and no action is needed. | |
580 | */ | |
d10eb08f | 581 | tlb_flush(CPU(cpu)); |
08de207b | 582 | } |
8d5c773e | 583 | raw_write(env, ri, value); |
08de207b PM |
584 | } |
585 | ||
b4ab8ce9 PM |
586 | /* IS variants of TLB operations must affect all cores */ |
587 | static void tlbiall_is_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
588 | uint64_t value) | |
589 | { | |
29a0af61 | 590 | CPUState *cs = env_cpu(env); |
b4ab8ce9 PM |
591 | |
592 | tlb_flush_all_cpus_synced(cs); | |
593 | } | |
594 | ||
595 | static void tlbiasid_is_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
596 | uint64_t value) | |
597 | { | |
29a0af61 | 598 | CPUState *cs = env_cpu(env); |
b4ab8ce9 PM |
599 | |
600 | tlb_flush_all_cpus_synced(cs); | |
601 | } | |
602 | ||
603 | static void tlbimva_is_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
604 | uint64_t value) | |
605 | { | |
29a0af61 | 606 | CPUState *cs = env_cpu(env); |
b4ab8ce9 PM |
607 | |
608 | tlb_flush_page_all_cpus_synced(cs, value & TARGET_PAGE_MASK); | |
609 | } | |
610 | ||
611 | static void tlbimvaa_is_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
612 | uint64_t value) | |
613 | { | |
29a0af61 | 614 | CPUState *cs = env_cpu(env); |
b4ab8ce9 PM |
615 | |
616 | tlb_flush_page_all_cpus_synced(cs, value & TARGET_PAGE_MASK); | |
617 | } | |
618 | ||
619 | /* | |
620 | * Non-IS variants of TLB operations are upgraded to | |
621 | * IS versions if we are at NS EL1 and HCR_EL2.FB is set to | |
622 | * force broadcast of these operations. | |
623 | */ | |
624 | static bool tlb_force_broadcast(CPUARMState *env) | |
625 | { | |
626 | return (env->cp15.hcr_el2 & HCR_FB) && | |
627 | arm_current_el(env) == 1 && arm_is_secure_below_el3(env); | |
628 | } | |
629 | ||
c4241c7d PM |
630 | static void tlbiall_write(CPUARMState *env, const ARMCPRegInfo *ri, |
631 | uint64_t value) | |
d929823f PM |
632 | { |
633 | /* Invalidate all (TLBIALL) */ | |
00c8cb0a AF |
634 | ARMCPU *cpu = arm_env_get_cpu(env); |
635 | ||
b4ab8ce9 PM |
636 | if (tlb_force_broadcast(env)) { |
637 | tlbiall_is_write(env, NULL, value); | |
638 | return; | |
639 | } | |
640 | ||
d10eb08f | 641 | tlb_flush(CPU(cpu)); |
d929823f PM |
642 | } |
643 | ||
c4241c7d PM |
644 | static void tlbimva_write(CPUARMState *env, const ARMCPRegInfo *ri, |
645 | uint64_t value) | |
d929823f PM |
646 | { |
647 | /* Invalidate single TLB entry by MVA and ASID (TLBIMVA) */ | |
31b030d4 AF |
648 | ARMCPU *cpu = arm_env_get_cpu(env); |
649 | ||
b4ab8ce9 PM |
650 | if (tlb_force_broadcast(env)) { |
651 | tlbimva_is_write(env, NULL, value); | |
652 | return; | |
653 | } | |
654 | ||
31b030d4 | 655 | tlb_flush_page(CPU(cpu), value & TARGET_PAGE_MASK); |
d929823f PM |
656 | } |
657 | ||
c4241c7d PM |
658 | static void tlbiasid_write(CPUARMState *env, const ARMCPRegInfo *ri, |
659 | uint64_t value) | |
d929823f PM |
660 | { |
661 | /* Invalidate by ASID (TLBIASID) */ | |
00c8cb0a AF |
662 | ARMCPU *cpu = arm_env_get_cpu(env); |
663 | ||
b4ab8ce9 PM |
664 | if (tlb_force_broadcast(env)) { |
665 | tlbiasid_is_write(env, NULL, value); | |
666 | return; | |
667 | } | |
668 | ||
d10eb08f | 669 | tlb_flush(CPU(cpu)); |
d929823f PM |
670 | } |
671 | ||
c4241c7d PM |
672 | static void tlbimvaa_write(CPUARMState *env, const ARMCPRegInfo *ri, |
673 | uint64_t value) | |
d929823f PM |
674 | { |
675 | /* Invalidate single entry by MVA, all ASIDs (TLBIMVAA) */ | |
31b030d4 AF |
676 | ARMCPU *cpu = arm_env_get_cpu(env); |
677 | ||
b4ab8ce9 PM |
678 | if (tlb_force_broadcast(env)) { |
679 | tlbimvaa_is_write(env, NULL, value); | |
680 | return; | |
681 | } | |
fa439fc5 | 682 | |
b4ab8ce9 | 683 | tlb_flush_page(CPU(cpu), value & TARGET_PAGE_MASK); |
fa439fc5 PM |
684 | } |
685 | ||
541ef8c2 SS |
686 | static void tlbiall_nsnh_write(CPUARMState *env, const ARMCPRegInfo *ri, |
687 | uint64_t value) | |
688 | { | |
29a0af61 | 689 | CPUState *cs = env_cpu(env); |
541ef8c2 | 690 | |
0336cbf8 | 691 | tlb_flush_by_mmuidx(cs, |
8bd5c820 PM |
692 | ARMMMUIdxBit_S12NSE1 | |
693 | ARMMMUIdxBit_S12NSE0 | | |
694 | ARMMMUIdxBit_S2NS); | |
541ef8c2 SS |
695 | } |
696 | ||
697 | static void tlbiall_nsnh_is_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
698 | uint64_t value) | |
699 | { | |
29a0af61 | 700 | CPUState *cs = env_cpu(env); |
541ef8c2 | 701 | |
a67cf277 | 702 | tlb_flush_by_mmuidx_all_cpus_synced(cs, |
8bd5c820 PM |
703 | ARMMMUIdxBit_S12NSE1 | |
704 | ARMMMUIdxBit_S12NSE0 | | |
705 | ARMMMUIdxBit_S2NS); | |
541ef8c2 SS |
706 | } |
707 | ||
708 | static void tlbiipas2_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
709 | uint64_t value) | |
710 | { | |
711 | /* Invalidate by IPA. This has to invalidate any structures that | |
712 | * contain only stage 2 translation information, but does not need | |
713 | * to apply to structures that contain combined stage 1 and stage 2 | |
714 | * translation information. | |
715 | * This must NOP if EL2 isn't implemented or SCR_EL3.NS is zero. | |
716 | */ | |
29a0af61 | 717 | CPUState *cs = env_cpu(env); |
541ef8c2 SS |
718 | uint64_t pageaddr; |
719 | ||
720 | if (!arm_feature(env, ARM_FEATURE_EL2) || !(env->cp15.scr_el3 & SCR_NS)) { | |
721 | return; | |
722 | } | |
723 | ||
724 | pageaddr = sextract64(value << 12, 0, 40); | |
725 | ||
8bd5c820 | 726 | tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdxBit_S2NS); |
541ef8c2 SS |
727 | } |
728 | ||
729 | static void tlbiipas2_is_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
730 | uint64_t value) | |
731 | { | |
29a0af61 | 732 | CPUState *cs = env_cpu(env); |
541ef8c2 SS |
733 | uint64_t pageaddr; |
734 | ||
735 | if (!arm_feature(env, ARM_FEATURE_EL2) || !(env->cp15.scr_el3 & SCR_NS)) { | |
736 | return; | |
737 | } | |
738 | ||
739 | pageaddr = sextract64(value << 12, 0, 40); | |
740 | ||
a67cf277 | 741 | tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr, |
8bd5c820 | 742 | ARMMMUIdxBit_S2NS); |
541ef8c2 SS |
743 | } |
744 | ||
745 | static void tlbiall_hyp_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
746 | uint64_t value) | |
747 | { | |
29a0af61 | 748 | CPUState *cs = env_cpu(env); |
541ef8c2 | 749 | |
8bd5c820 | 750 | tlb_flush_by_mmuidx(cs, ARMMMUIdxBit_S1E2); |
541ef8c2 SS |
751 | } |
752 | ||
753 | static void tlbiall_hyp_is_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
754 | uint64_t value) | |
755 | { | |
29a0af61 | 756 | CPUState *cs = env_cpu(env); |
541ef8c2 | 757 | |
8bd5c820 | 758 | tlb_flush_by_mmuidx_all_cpus_synced(cs, ARMMMUIdxBit_S1E2); |
541ef8c2 SS |
759 | } |
760 | ||
761 | static void tlbimva_hyp_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
762 | uint64_t value) | |
763 | { | |
29a0af61 | 764 | CPUState *cs = env_cpu(env); |
541ef8c2 SS |
765 | uint64_t pageaddr = value & ~MAKE_64BIT_MASK(0, 12); |
766 | ||
8bd5c820 | 767 | tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdxBit_S1E2); |
541ef8c2 SS |
768 | } |
769 | ||
770 | static void tlbimva_hyp_is_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
771 | uint64_t value) | |
772 | { | |
29a0af61 | 773 | CPUState *cs = env_cpu(env); |
541ef8c2 SS |
774 | uint64_t pageaddr = value & ~MAKE_64BIT_MASK(0, 12); |
775 | ||
a67cf277 | 776 | tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr, |
8bd5c820 | 777 | ARMMMUIdxBit_S1E2); |
541ef8c2 SS |
778 | } |
779 | ||
e9aa6c21 | 780 | static const ARMCPRegInfo cp_reginfo[] = { |
54bf36ed FA |
781 | /* Define the secure and non-secure FCSE identifier CP registers |
782 | * separately because there is no secure bank in V8 (no _EL3). This allows | |
783 | * the secure register to be properly reset and migrated. There is also no | |
784 | * v8 EL1 version of the register so the non-secure instance stands alone. | |
785 | */ | |
9c513e78 | 786 | { .name = "FCSEIDR", |
54bf36ed FA |
787 | .cp = 15, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 0, |
788 | .access = PL1_RW, .secure = ARM_CP_SECSTATE_NS, | |
789 | .fieldoffset = offsetof(CPUARMState, cp15.fcseidr_ns), | |
790 | .resetvalue = 0, .writefn = fcse_write, .raw_writefn = raw_write, }, | |
9c513e78 | 791 | { .name = "FCSEIDR_S", |
54bf36ed FA |
792 | .cp = 15, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 0, |
793 | .access = PL1_RW, .secure = ARM_CP_SECSTATE_S, | |
794 | .fieldoffset = offsetof(CPUARMState, cp15.fcseidr_s), | |
d4e6df63 | 795 | .resetvalue = 0, .writefn = fcse_write, .raw_writefn = raw_write, }, |
54bf36ed FA |
796 | /* Define the secure and non-secure context identifier CP registers |
797 | * separately because there is no secure bank in V8 (no _EL3). This allows | |
798 | * the secure register to be properly reset and migrated. In the | |
799 | * non-secure case, the 32-bit register will have reset and migration | |
800 | * disabled during registration as it is handled by the 64-bit instance. | |
801 | */ | |
802 | { .name = "CONTEXTIDR_EL1", .state = ARM_CP_STATE_BOTH, | |
014406b5 | 803 | .opc0 = 3, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 1, |
54bf36ed FA |
804 | .access = PL1_RW, .secure = ARM_CP_SECSTATE_NS, |
805 | .fieldoffset = offsetof(CPUARMState, cp15.contextidr_el[1]), | |
806 | .resetvalue = 0, .writefn = contextidr_write, .raw_writefn = raw_write, }, | |
9c513e78 | 807 | { .name = "CONTEXTIDR_S", .state = ARM_CP_STATE_AA32, |
54bf36ed FA |
808 | .cp = 15, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 1, |
809 | .access = PL1_RW, .secure = ARM_CP_SECSTATE_S, | |
810 | .fieldoffset = offsetof(CPUARMState, cp15.contextidr_s), | |
d4e6df63 | 811 | .resetvalue = 0, .writefn = contextidr_write, .raw_writefn = raw_write, }, |
9449fdf6 PM |
812 | REGINFO_SENTINEL |
813 | }; | |
814 | ||
815 | static const ARMCPRegInfo not_v8_cp_reginfo[] = { | |
816 | /* NB: Some of these registers exist in v8 but with more precise | |
817 | * definitions that don't use CP_ANY wildcards (mostly in v8_cp_reginfo[]). | |
818 | */ | |
819 | /* MMU Domain access control / MPU write buffer control */ | |
0c17d68c FA |
820 | { .name = "DACR", |
821 | .cp = 15, .opc1 = CP_ANY, .crn = 3, .crm = CP_ANY, .opc2 = CP_ANY, | |
822 | .access = PL1_RW, .resetvalue = 0, | |
823 | .writefn = dacr_write, .raw_writefn = raw_write, | |
824 | .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.dacr_s), | |
825 | offsetoflow32(CPUARMState, cp15.dacr_ns) } }, | |
a903c449 EI |
826 | /* ARMv7 allocates a range of implementation defined TLB LOCKDOWN regs. |
827 | * For v6 and v5, these mappings are overly broad. | |
4fdd17dd | 828 | */ |
a903c449 EI |
829 | { .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 0, |
830 | .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP }, | |
831 | { .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 1, | |
832 | .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP }, | |
833 | { .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 4, | |
834 | .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP }, | |
835 | { .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 8, | |
4fdd17dd | 836 | .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP }, |
c4804214 PM |
837 | /* Cache maintenance ops; some of this space may be overridden later. */ |
838 | { .name = "CACHEMAINT", .cp = 15, .crn = 7, .crm = CP_ANY, | |
839 | .opc1 = 0, .opc2 = CP_ANY, .access = PL1_W, | |
840 | .type = ARM_CP_NOP | ARM_CP_OVERRIDE }, | |
e9aa6c21 PM |
841 | REGINFO_SENTINEL |
842 | }; | |
843 | ||
7d57f408 PM |
844 | static const ARMCPRegInfo not_v6_cp_reginfo[] = { |
845 | /* Not all pre-v6 cores implemented this WFI, so this is slightly | |
846 | * over-broad. | |
847 | */ | |
848 | { .name = "WFI_v5", .cp = 15, .crn = 7, .crm = 8, .opc1 = 0, .opc2 = 2, | |
849 | .access = PL1_W, .type = ARM_CP_WFI }, | |
850 | REGINFO_SENTINEL | |
851 | }; | |
852 | ||
853 | static const ARMCPRegInfo not_v7_cp_reginfo[] = { | |
854 | /* Standard v6 WFI (also used in some pre-v6 cores); not in v7 (which | |
855 | * is UNPREDICTABLE; we choose to NOP as most implementations do). | |
856 | */ | |
857 | { .name = "WFI_v6", .cp = 15, .crn = 7, .crm = 0, .opc1 = 0, .opc2 = 4, | |
858 | .access = PL1_W, .type = ARM_CP_WFI }, | |
34f90529 PM |
859 | /* L1 cache lockdown. Not architectural in v6 and earlier but in practice |
860 | * implemented in 926, 946, 1026, 1136, 1176 and 11MPCore. StrongARM and | |
861 | * OMAPCP will override this space. | |
862 | */ | |
863 | { .name = "DLOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 0, .opc2 = 0, | |
864 | .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_data), | |
865 | .resetvalue = 0 }, | |
866 | { .name = "ILOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 0, .opc2 = 1, | |
867 | .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_insn), | |
868 | .resetvalue = 0 }, | |
776d4e5c PM |
869 | /* v6 doesn't have the cache ID registers but Linux reads them anyway */ |
870 | { .name = "DUMMY", .cp = 15, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = CP_ANY, | |
7a0e58fa | 871 | .access = PL1_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW, |
d4e6df63 | 872 | .resetvalue = 0 }, |
50300698 PM |
873 | /* We don't implement pre-v7 debug but most CPUs had at least a DBGDIDR; |
874 | * implementing it as RAZ means the "debug architecture version" bits | |
875 | * will read as a reserved value, which should cause Linux to not try | |
876 | * to use the debug hardware. | |
877 | */ | |
878 | { .name = "DBGDIDR", .cp = 14, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 0, | |
879 | .access = PL0_R, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
995939a6 PM |
880 | /* MMU TLB control. Note that the wildcarding means we cover not just |
881 | * the unified TLB ops but also the dside/iside/inner-shareable variants. | |
882 | */ | |
883 | { .name = "TLBIALL", .cp = 15, .crn = 8, .crm = CP_ANY, | |
884 | .opc1 = CP_ANY, .opc2 = 0, .access = PL1_W, .writefn = tlbiall_write, | |
7a0e58fa | 885 | .type = ARM_CP_NO_RAW }, |
995939a6 PM |
886 | { .name = "TLBIMVA", .cp = 15, .crn = 8, .crm = CP_ANY, |
887 | .opc1 = CP_ANY, .opc2 = 1, .access = PL1_W, .writefn = tlbimva_write, | |
7a0e58fa | 888 | .type = ARM_CP_NO_RAW }, |
995939a6 PM |
889 | { .name = "TLBIASID", .cp = 15, .crn = 8, .crm = CP_ANY, |
890 | .opc1 = CP_ANY, .opc2 = 2, .access = PL1_W, .writefn = tlbiasid_write, | |
7a0e58fa | 891 | .type = ARM_CP_NO_RAW }, |
995939a6 PM |
892 | { .name = "TLBIMVAA", .cp = 15, .crn = 8, .crm = CP_ANY, |
893 | .opc1 = CP_ANY, .opc2 = 3, .access = PL1_W, .writefn = tlbimvaa_write, | |
7a0e58fa | 894 | .type = ARM_CP_NO_RAW }, |
a903c449 EI |
895 | { .name = "PRRR", .cp = 15, .crn = 10, .crm = 2, |
896 | .opc1 = 0, .opc2 = 0, .access = PL1_RW, .type = ARM_CP_NOP }, | |
897 | { .name = "NMRR", .cp = 15, .crn = 10, .crm = 2, | |
898 | .opc1 = 0, .opc2 = 1, .access = PL1_RW, .type = ARM_CP_NOP }, | |
7d57f408 PM |
899 | REGINFO_SENTINEL |
900 | }; | |
901 | ||
c4241c7d PM |
902 | static void cpacr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
903 | uint64_t value) | |
2771db27 | 904 | { |
f0aff255 FA |
905 | uint32_t mask = 0; |
906 | ||
907 | /* In ARMv8 most bits of CPACR_EL1 are RES0. */ | |
908 | if (!arm_feature(env, ARM_FEATURE_V8)) { | |
909 | /* ARMv7 defines bits for unimplemented coprocessors as RAZ/WI. | |
910 | * ASEDIS [31] and D32DIS [30] are both UNK/SBZP without VFP. | |
911 | * TRCDIS [28] is RAZ/WI since we do not implement a trace macrocell. | |
912 | */ | |
913 | if (arm_feature(env, ARM_FEATURE_VFP)) { | |
914 | /* VFP coprocessor: cp10 & cp11 [23:20] */ | |
915 | mask |= (1 << 31) | (1 << 30) | (0xf << 20); | |
916 | ||
917 | if (!arm_feature(env, ARM_FEATURE_NEON)) { | |
918 | /* ASEDIS [31] bit is RAO/WI */ | |
919 | value |= (1 << 31); | |
920 | } | |
921 | ||
922 | /* VFPv3 and upwards with NEON implement 32 double precision | |
923 | * registers (D0-D31). | |
924 | */ | |
925 | if (!arm_feature(env, ARM_FEATURE_NEON) || | |
926 | !arm_feature(env, ARM_FEATURE_VFP3)) { | |
927 | /* D32DIS [30] is RAO/WI if D16-31 are not implemented. */ | |
928 | value |= (1 << 30); | |
929 | } | |
930 | } | |
931 | value &= mask; | |
2771db27 | 932 | } |
7ebd5f2e | 933 | env->cp15.cpacr_el1 = value; |
2771db27 PM |
934 | } |
935 | ||
5deac39c PM |
936 | static void cpacr_reset(CPUARMState *env, const ARMCPRegInfo *ri) |
937 | { | |
938 | /* Call cpacr_write() so that we reset with the correct RAO bits set | |
939 | * for our CPU features. | |
940 | */ | |
941 | cpacr_write(env, ri, 0); | |
942 | } | |
943 | ||
3f208fd7 PM |
944 | static CPAccessResult cpacr_access(CPUARMState *env, const ARMCPRegInfo *ri, |
945 | bool isread) | |
c6f19164 GB |
946 | { |
947 | if (arm_feature(env, ARM_FEATURE_V8)) { | |
948 | /* Check if CPACR accesses are to be trapped to EL2 */ | |
949 | if (arm_current_el(env) == 1 && | |
950 | (env->cp15.cptr_el[2] & CPTR_TCPAC) && !arm_is_secure(env)) { | |
951 | return CP_ACCESS_TRAP_EL2; | |
952 | /* Check if CPACR accesses are to be trapped to EL3 */ | |
953 | } else if (arm_current_el(env) < 3 && | |
954 | (env->cp15.cptr_el[3] & CPTR_TCPAC)) { | |
955 | return CP_ACCESS_TRAP_EL3; | |
956 | } | |
957 | } | |
958 | ||
959 | return CP_ACCESS_OK; | |
960 | } | |
961 | ||
3f208fd7 PM |
962 | static CPAccessResult cptr_access(CPUARMState *env, const ARMCPRegInfo *ri, |
963 | bool isread) | |
c6f19164 GB |
964 | { |
965 | /* Check if CPTR accesses are set to trap to EL3 */ | |
966 | if (arm_current_el(env) == 2 && (env->cp15.cptr_el[3] & CPTR_TCPAC)) { | |
967 | return CP_ACCESS_TRAP_EL3; | |
968 | } | |
969 | ||
970 | return CP_ACCESS_OK; | |
971 | } | |
972 | ||
7d57f408 PM |
973 | static const ARMCPRegInfo v6_cp_reginfo[] = { |
974 | /* prefetch by MVA in v6, NOP in v7 */ | |
975 | { .name = "MVA_prefetch", | |
976 | .cp = 15, .crn = 7, .crm = 13, .opc1 = 0, .opc2 = 1, | |
977 | .access = PL1_W, .type = ARM_CP_NOP }, | |
6df99dec SS |
978 | /* We need to break the TB after ISB to execute self-modifying code |
979 | * correctly and also to take any pending interrupts immediately. | |
980 | * So use arm_cp_write_ignore() function instead of ARM_CP_NOP flag. | |
981 | */ | |
7d57f408 | 982 | { .name = "ISB", .cp = 15, .crn = 7, .crm = 5, .opc1 = 0, .opc2 = 4, |
6df99dec | 983 | .access = PL0_W, .type = ARM_CP_NO_RAW, .writefn = arm_cp_write_ignore }, |
091fd17c | 984 | { .name = "DSB", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 4, |
7d57f408 | 985 | .access = PL0_W, .type = ARM_CP_NOP }, |
091fd17c | 986 | { .name = "DMB", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 5, |
7d57f408 | 987 | .access = PL0_W, .type = ARM_CP_NOP }, |
06d76f31 | 988 | { .name = "IFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 2, |
6cd8a264 | 989 | .access = PL1_RW, |
b848ce2b FA |
990 | .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ifar_s), |
991 | offsetof(CPUARMState, cp15.ifar_ns) }, | |
06d76f31 PM |
992 | .resetvalue = 0, }, |
993 | /* Watchpoint Fault Address Register : should actually only be present | |
994 | * for 1136, 1176, 11MPCore. | |
995 | */ | |
996 | { .name = "WFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 1, | |
997 | .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0, }, | |
34222fb8 | 998 | { .name = "CPACR", .state = ARM_CP_STATE_BOTH, .opc0 = 3, |
c6f19164 | 999 | .crn = 1, .crm = 0, .opc1 = 0, .opc2 = 2, .accessfn = cpacr_access, |
7ebd5f2e | 1000 | .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.cpacr_el1), |
5deac39c | 1001 | .resetfn = cpacr_reset, .writefn = cpacr_write }, |
7d57f408 PM |
1002 | REGINFO_SENTINEL |
1003 | }; | |
1004 | ||
7ece99b1 AL |
1005 | /* Definitions for the PMU registers */ |
1006 | #define PMCRN_MASK 0xf800 | |
1007 | #define PMCRN_SHIFT 11 | |
f4efb4b2 | 1008 | #define PMCRLC 0x40 |
033614c4 | 1009 | #define PMCRDP 0x10 |
7ece99b1 AL |
1010 | #define PMCRD 0x8 |
1011 | #define PMCRC 0x4 | |
5ecdd3e4 | 1012 | #define PMCRP 0x2 |
7ece99b1 AL |
1013 | #define PMCRE 0x1 |
1014 | ||
033614c4 AL |
1015 | #define PMXEVTYPER_P 0x80000000 |
1016 | #define PMXEVTYPER_U 0x40000000 | |
1017 | #define PMXEVTYPER_NSK 0x20000000 | |
1018 | #define PMXEVTYPER_NSU 0x10000000 | |
1019 | #define PMXEVTYPER_NSH 0x08000000 | |
1020 | #define PMXEVTYPER_M 0x04000000 | |
1021 | #define PMXEVTYPER_MT 0x02000000 | |
1022 | #define PMXEVTYPER_EVTCOUNT 0x0000ffff | |
1023 | #define PMXEVTYPER_MASK (PMXEVTYPER_P | PMXEVTYPER_U | PMXEVTYPER_NSK | \ | |
1024 | PMXEVTYPER_NSU | PMXEVTYPER_NSH | \ | |
1025 | PMXEVTYPER_M | PMXEVTYPER_MT | \ | |
1026 | PMXEVTYPER_EVTCOUNT) | |
1027 | ||
4b8afa1f AL |
1028 | #define PMCCFILTR 0xf8000000 |
1029 | #define PMCCFILTR_M PMXEVTYPER_M | |
1030 | #define PMCCFILTR_EL0 (PMCCFILTR | PMCCFILTR_M) | |
1031 | ||
7ece99b1 AL |
1032 | static inline uint32_t pmu_num_counters(CPUARMState *env) |
1033 | { | |
1034 | return (env->cp15.c9_pmcr & PMCRN_MASK) >> PMCRN_SHIFT; | |
1035 | } | |
1036 | ||
1037 | /* Bits allowed to be set/cleared for PMCNTEN* and PMINTEN* */ | |
1038 | static inline uint64_t pmu_counter_mask(CPUARMState *env) | |
1039 | { | |
1040 | return (1 << 31) | ((1 << pmu_num_counters(env)) - 1); | |
1041 | } | |
1042 | ||
57a4a11b AL |
1043 | typedef struct pm_event { |
1044 | uint16_t number; /* PMEVTYPER.evtCount is 16 bits wide */ | |
1045 | /* If the event is supported on this CPU (used to generate PMCEID[01]) */ | |
1046 | bool (*supported)(CPUARMState *); | |
1047 | /* | |
1048 | * Retrieve the current count of the underlying event. The programmed | |
1049 | * counters hold a difference from the return value from this function | |
1050 | */ | |
1051 | uint64_t (*get_count)(CPUARMState *); | |
4e7beb0c AL |
1052 | /* |
1053 | * Return how many nanoseconds it will take (at a minimum) for count events | |
1054 | * to occur. A negative value indicates the counter will never overflow, or | |
1055 | * that the counter has otherwise arranged for the overflow bit to be set | |
1056 | * and the PMU interrupt to be raised on overflow. | |
1057 | */ | |
1058 | int64_t (*ns_per_count)(uint64_t); | |
57a4a11b AL |
1059 | } pm_event; |
1060 | ||
b2e23725 AL |
1061 | static bool event_always_supported(CPUARMState *env) |
1062 | { | |
1063 | return true; | |
1064 | } | |
1065 | ||
0d4bfd7d AL |
1066 | static uint64_t swinc_get_count(CPUARMState *env) |
1067 | { | |
1068 | /* | |
1069 | * SW_INCR events are written directly to the pmevcntr's by writes to | |
1070 | * PMSWINC, so there is no underlying count maintained by the PMU itself | |
1071 | */ | |
1072 | return 0; | |
1073 | } | |
1074 | ||
4e7beb0c AL |
1075 | static int64_t swinc_ns_per(uint64_t ignored) |
1076 | { | |
1077 | return -1; | |
1078 | } | |
1079 | ||
b2e23725 AL |
1080 | /* |
1081 | * Return the underlying cycle count for the PMU cycle counters. If we're in | |
1082 | * usermode, simply return 0. | |
1083 | */ | |
1084 | static uint64_t cycles_get_count(CPUARMState *env) | |
1085 | { | |
1086 | #ifndef CONFIG_USER_ONLY | |
1087 | return muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), | |
1088 | ARM_CPU_FREQ, NANOSECONDS_PER_SECOND); | |
1089 | #else | |
1090 | return cpu_get_host_ticks(); | |
1091 | #endif | |
1092 | } | |
1093 | ||
1094 | #ifndef CONFIG_USER_ONLY | |
4e7beb0c AL |
1095 | static int64_t cycles_ns_per(uint64_t cycles) |
1096 | { | |
1097 | return (ARM_CPU_FREQ / NANOSECONDS_PER_SECOND) * cycles; | |
1098 | } | |
1099 | ||
b2e23725 AL |
1100 | static bool instructions_supported(CPUARMState *env) |
1101 | { | |
1102 | return use_icount == 1 /* Precise instruction counting */; | |
1103 | } | |
1104 | ||
1105 | static uint64_t instructions_get_count(CPUARMState *env) | |
1106 | { | |
1107 | return (uint64_t)cpu_get_icount_raw(); | |
1108 | } | |
4e7beb0c AL |
1109 | |
1110 | static int64_t instructions_ns_per(uint64_t icount) | |
1111 | { | |
1112 | return cpu_icount_to_ns((int64_t)icount); | |
1113 | } | |
b2e23725 AL |
1114 | #endif |
1115 | ||
57a4a11b | 1116 | static const pm_event pm_events[] = { |
0d4bfd7d AL |
1117 | { .number = 0x000, /* SW_INCR */ |
1118 | .supported = event_always_supported, | |
1119 | .get_count = swinc_get_count, | |
4e7beb0c | 1120 | .ns_per_count = swinc_ns_per, |
0d4bfd7d | 1121 | }, |
b2e23725 AL |
1122 | #ifndef CONFIG_USER_ONLY |
1123 | { .number = 0x008, /* INST_RETIRED, Instruction architecturally executed */ | |
1124 | .supported = instructions_supported, | |
1125 | .get_count = instructions_get_count, | |
4e7beb0c | 1126 | .ns_per_count = instructions_ns_per, |
b2e23725 AL |
1127 | }, |
1128 | { .number = 0x011, /* CPU_CYCLES, Cycle */ | |
1129 | .supported = event_always_supported, | |
1130 | .get_count = cycles_get_count, | |
4e7beb0c | 1131 | .ns_per_count = cycles_ns_per, |
b2e23725 AL |
1132 | } |
1133 | #endif | |
57a4a11b AL |
1134 | }; |
1135 | ||
1136 | /* | |
1137 | * Note: Before increasing MAX_EVENT_ID beyond 0x3f into the 0x40xx range of | |
1138 | * events (i.e. the statistical profiling extension), this implementation | |
1139 | * should first be updated to something sparse instead of the current | |
1140 | * supported_event_map[] array. | |
1141 | */ | |
b2e23725 | 1142 | #define MAX_EVENT_ID 0x11 |
57a4a11b AL |
1143 | #define UNSUPPORTED_EVENT UINT16_MAX |
1144 | static uint16_t supported_event_map[MAX_EVENT_ID + 1]; | |
1145 | ||
1146 | /* | |
bf8d0969 AL |
1147 | * Called upon CPU initialization to initialize PMCEID[01]_EL0 and build a map |
1148 | * of ARM event numbers to indices in our pm_events array. | |
57a4a11b AL |
1149 | * |
1150 | * Note: Events in the 0x40XX range are not currently supported. | |
1151 | */ | |
bf8d0969 | 1152 | void pmu_init(ARMCPU *cpu) |
57a4a11b | 1153 | { |
57a4a11b AL |
1154 | unsigned int i; |
1155 | ||
bf8d0969 AL |
1156 | /* |
1157 | * Empty supported_event_map and cpu->pmceid[01] before adding supported | |
1158 | * events to them | |
1159 | */ | |
57a4a11b AL |
1160 | for (i = 0; i < ARRAY_SIZE(supported_event_map); i++) { |
1161 | supported_event_map[i] = UNSUPPORTED_EVENT; | |
1162 | } | |
bf8d0969 AL |
1163 | cpu->pmceid0 = 0; |
1164 | cpu->pmceid1 = 0; | |
57a4a11b AL |
1165 | |
1166 | for (i = 0; i < ARRAY_SIZE(pm_events); i++) { | |
1167 | const pm_event *cnt = &pm_events[i]; | |
1168 | assert(cnt->number <= MAX_EVENT_ID); | |
1169 | /* We do not currently support events in the 0x40xx range */ | |
1170 | assert(cnt->number <= 0x3f); | |
1171 | ||
bf8d0969 | 1172 | if (cnt->supported(&cpu->env)) { |
57a4a11b | 1173 | supported_event_map[cnt->number] = i; |
67da43d6 | 1174 | uint64_t event_mask = 1ULL << (cnt->number & 0x1f); |
bf8d0969 AL |
1175 | if (cnt->number & 0x20) { |
1176 | cpu->pmceid1 |= event_mask; | |
1177 | } else { | |
1178 | cpu->pmceid0 |= event_mask; | |
1179 | } | |
57a4a11b AL |
1180 | } |
1181 | } | |
57a4a11b AL |
1182 | } |
1183 | ||
5ecdd3e4 AL |
1184 | /* |
1185 | * Check at runtime whether a PMU event is supported for the current machine | |
1186 | */ | |
1187 | static bool event_supported(uint16_t number) | |
1188 | { | |
1189 | if (number > MAX_EVENT_ID) { | |
1190 | return false; | |
1191 | } | |
1192 | return supported_event_map[number] != UNSUPPORTED_EVENT; | |
1193 | } | |
1194 | ||
3f208fd7 PM |
1195 | static CPAccessResult pmreg_access(CPUARMState *env, const ARMCPRegInfo *ri, |
1196 | bool isread) | |
200ac0ef | 1197 | { |
3b163b01 | 1198 | /* Performance monitor registers user accessibility is controlled |
1fce1ba9 PM |
1199 | * by PMUSERENR. MDCR_EL2.TPM and MDCR_EL3.TPM allow configurable |
1200 | * trapping to EL2 or EL3 for other accesses. | |
200ac0ef | 1201 | */ |
1fce1ba9 PM |
1202 | int el = arm_current_el(env); |
1203 | ||
6ecd0b6b | 1204 | if (el == 0 && !(env->cp15.c9_pmuserenr & 1)) { |
fcd25206 | 1205 | return CP_ACCESS_TRAP; |
200ac0ef | 1206 | } |
1fce1ba9 PM |
1207 | if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TPM) |
1208 | && !arm_is_secure_below_el3(env)) { | |
1209 | return CP_ACCESS_TRAP_EL2; | |
1210 | } | |
1211 | if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TPM)) { | |
1212 | return CP_ACCESS_TRAP_EL3; | |
1213 | } | |
1214 | ||
fcd25206 | 1215 | return CP_ACCESS_OK; |
200ac0ef PM |
1216 | } |
1217 | ||
6ecd0b6b AB |
1218 | static CPAccessResult pmreg_access_xevcntr(CPUARMState *env, |
1219 | const ARMCPRegInfo *ri, | |
1220 | bool isread) | |
1221 | { | |
1222 | /* ER: event counter read trap control */ | |
1223 | if (arm_feature(env, ARM_FEATURE_V8) | |
1224 | && arm_current_el(env) == 0 | |
1225 | && (env->cp15.c9_pmuserenr & (1 << 3)) != 0 | |
1226 | && isread) { | |
1227 | return CP_ACCESS_OK; | |
1228 | } | |
1229 | ||
1230 | return pmreg_access(env, ri, isread); | |
1231 | } | |
1232 | ||
1233 | static CPAccessResult pmreg_access_swinc(CPUARMState *env, | |
1234 | const ARMCPRegInfo *ri, | |
1235 | bool isread) | |
1236 | { | |
1237 | /* SW: software increment write trap control */ | |
1238 | if (arm_feature(env, ARM_FEATURE_V8) | |
1239 | && arm_current_el(env) == 0 | |
1240 | && (env->cp15.c9_pmuserenr & (1 << 1)) != 0 | |
1241 | && !isread) { | |
1242 | return CP_ACCESS_OK; | |
1243 | } | |
1244 | ||
1245 | return pmreg_access(env, ri, isread); | |
1246 | } | |
1247 | ||
6ecd0b6b AB |
1248 | static CPAccessResult pmreg_access_selr(CPUARMState *env, |
1249 | const ARMCPRegInfo *ri, | |
1250 | bool isread) | |
1251 | { | |
1252 | /* ER: event counter read trap control */ | |
1253 | if (arm_feature(env, ARM_FEATURE_V8) | |
1254 | && arm_current_el(env) == 0 | |
1255 | && (env->cp15.c9_pmuserenr & (1 << 3)) != 0) { | |
1256 | return CP_ACCESS_OK; | |
1257 | } | |
1258 | ||
1259 | return pmreg_access(env, ri, isread); | |
1260 | } | |
1261 | ||
1262 | static CPAccessResult pmreg_access_ccntr(CPUARMState *env, | |
1263 | const ARMCPRegInfo *ri, | |
1264 | bool isread) | |
1265 | { | |
1266 | /* CR: cycle counter read trap control */ | |
1267 | if (arm_feature(env, ARM_FEATURE_V8) | |
1268 | && arm_current_el(env) == 0 | |
1269 | && (env->cp15.c9_pmuserenr & (1 << 2)) != 0 | |
1270 | && isread) { | |
1271 | return CP_ACCESS_OK; | |
1272 | } | |
1273 | ||
1274 | return pmreg_access(env, ri, isread); | |
1275 | } | |
1276 | ||
033614c4 AL |
1277 | /* Returns true if the counter (pass 31 for PMCCNTR) should count events using |
1278 | * the current EL, security state, and register configuration. | |
1279 | */ | |
1280 | static bool pmu_counter_enabled(CPUARMState *env, uint8_t counter) | |
87124fde | 1281 | { |
033614c4 AL |
1282 | uint64_t filter; |
1283 | bool e, p, u, nsk, nsu, nsh, m; | |
1284 | bool enabled, prohibited, filtered; | |
1285 | bool secure = arm_is_secure(env); | |
1286 | int el = arm_current_el(env); | |
1287 | uint8_t hpmn = env->cp15.mdcr_el2 & MDCR_HPMN; | |
87124fde | 1288 | |
cbbb3041 AJ |
1289 | if (!arm_feature(env, ARM_FEATURE_PMU)) { |
1290 | return false; | |
1291 | } | |
1292 | ||
033614c4 AL |
1293 | if (!arm_feature(env, ARM_FEATURE_EL2) || |
1294 | (counter < hpmn || counter == 31)) { | |
1295 | e = env->cp15.c9_pmcr & PMCRE; | |
1296 | } else { | |
1297 | e = env->cp15.mdcr_el2 & MDCR_HPME; | |
87124fde | 1298 | } |
033614c4 | 1299 | enabled = e && (env->cp15.c9_pmcnten & (1 << counter)); |
87124fde | 1300 | |
033614c4 AL |
1301 | if (!secure) { |
1302 | if (el == 2 && (counter < hpmn || counter == 31)) { | |
1303 | prohibited = env->cp15.mdcr_el2 & MDCR_HPMD; | |
1304 | } else { | |
1305 | prohibited = false; | |
1306 | } | |
1307 | } else { | |
1308 | prohibited = arm_feature(env, ARM_FEATURE_EL3) && | |
1309 | (env->cp15.mdcr_el3 & MDCR_SPME); | |
1310 | } | |
1311 | ||
1312 | if (prohibited && counter == 31) { | |
1313 | prohibited = env->cp15.c9_pmcr & PMCRDP; | |
1314 | } | |
1315 | ||
5ecdd3e4 AL |
1316 | if (counter == 31) { |
1317 | filter = env->cp15.pmccfiltr_el0; | |
1318 | } else { | |
1319 | filter = env->cp15.c14_pmevtyper[counter]; | |
1320 | } | |
033614c4 AL |
1321 | |
1322 | p = filter & PMXEVTYPER_P; | |
1323 | u = filter & PMXEVTYPER_U; | |
1324 | nsk = arm_feature(env, ARM_FEATURE_EL3) && (filter & PMXEVTYPER_NSK); | |
1325 | nsu = arm_feature(env, ARM_FEATURE_EL3) && (filter & PMXEVTYPER_NSU); | |
1326 | nsh = arm_feature(env, ARM_FEATURE_EL2) && (filter & PMXEVTYPER_NSH); | |
1327 | m = arm_el_is_aa64(env, 1) && | |
1328 | arm_feature(env, ARM_FEATURE_EL3) && (filter & PMXEVTYPER_M); | |
1329 | ||
1330 | if (el == 0) { | |
1331 | filtered = secure ? u : u != nsu; | |
1332 | } else if (el == 1) { | |
1333 | filtered = secure ? p : p != nsk; | |
1334 | } else if (el == 2) { | |
1335 | filtered = !nsh; | |
1336 | } else { /* EL3 */ | |
1337 | filtered = m != p; | |
1338 | } | |
1339 | ||
5ecdd3e4 AL |
1340 | if (counter != 31) { |
1341 | /* | |
1342 | * If not checking PMCCNTR, ensure the counter is setup to an event we | |
1343 | * support | |
1344 | */ | |
1345 | uint16_t event = filter & PMXEVTYPER_EVTCOUNT; | |
1346 | if (!event_supported(event)) { | |
1347 | return false; | |
1348 | } | |
1349 | } | |
1350 | ||
033614c4 | 1351 | return enabled && !prohibited && !filtered; |
87124fde | 1352 | } |
033614c4 | 1353 | |
f4efb4b2 AL |
1354 | static void pmu_update_irq(CPUARMState *env) |
1355 | { | |
1356 | ARMCPU *cpu = arm_env_get_cpu(env); | |
1357 | qemu_set_irq(cpu->pmu_interrupt, (env->cp15.c9_pmcr & PMCRE) && | |
1358 | (env->cp15.c9_pminten & env->cp15.c9_pmovsr)); | |
1359 | } | |
1360 | ||
5d05b9d4 AL |
1361 | /* |
1362 | * Ensure c15_ccnt is the guest-visible count so that operations such as | |
1363 | * enabling/disabling the counter or filtering, modifying the count itself, | |
1364 | * etc. can be done logically. This is essentially a no-op if the counter is | |
1365 | * not enabled at the time of the call. | |
1366 | */ | |
f2b2f53f | 1367 | static void pmccntr_op_start(CPUARMState *env) |
ec7b4ce4 | 1368 | { |
b2e23725 | 1369 | uint64_t cycles = cycles_get_count(env); |
ec7b4ce4 | 1370 | |
033614c4 | 1371 | if (pmu_counter_enabled(env, 31)) { |
5d05b9d4 AL |
1372 | uint64_t eff_cycles = cycles; |
1373 | if (env->cp15.c9_pmcr & PMCRD) { | |
1374 | /* Increment once every 64 processor clock cycles */ | |
1375 | eff_cycles /= 64; | |
1376 | } | |
1377 | ||
f4efb4b2 AL |
1378 | uint64_t new_pmccntr = eff_cycles - env->cp15.c15_ccnt_delta; |
1379 | ||
1380 | uint64_t overflow_mask = env->cp15.c9_pmcr & PMCRLC ? \ | |
1381 | 1ull << 63 : 1ull << 31; | |
1382 | if (env->cp15.c15_ccnt & ~new_pmccntr & overflow_mask) { | |
1383 | env->cp15.c9_pmovsr |= (1 << 31); | |
1384 | pmu_update_irq(env); | |
1385 | } | |
1386 | ||
1387 | env->cp15.c15_ccnt = new_pmccntr; | |
ec7b4ce4 | 1388 | } |
5d05b9d4 AL |
1389 | env->cp15.c15_ccnt_delta = cycles; |
1390 | } | |
ec7b4ce4 | 1391 | |
5d05b9d4 AL |
1392 | /* |
1393 | * If PMCCNTR is enabled, recalculate the delta between the clock and the | |
1394 | * guest-visible count. A call to pmccntr_op_finish should follow every call to | |
1395 | * pmccntr_op_start. | |
1396 | */ | |
f2b2f53f | 1397 | static void pmccntr_op_finish(CPUARMState *env) |
5d05b9d4 | 1398 | { |
033614c4 | 1399 | if (pmu_counter_enabled(env, 31)) { |
4e7beb0c AL |
1400 | #ifndef CONFIG_USER_ONLY |
1401 | /* Calculate when the counter will next overflow */ | |
1402 | uint64_t remaining_cycles = -env->cp15.c15_ccnt; | |
1403 | if (!(env->cp15.c9_pmcr & PMCRLC)) { | |
1404 | remaining_cycles = (uint32_t)remaining_cycles; | |
1405 | } | |
1406 | int64_t overflow_in = cycles_ns_per(remaining_cycles); | |
1407 | ||
1408 | if (overflow_in > 0) { | |
1409 | int64_t overflow_at = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + | |
1410 | overflow_in; | |
1411 | ARMCPU *cpu = arm_env_get_cpu(env); | |
1412 | timer_mod_anticipate_ns(cpu->pmu_timer, overflow_at); | |
1413 | } | |
1414 | #endif | |
5d05b9d4 | 1415 | |
4e7beb0c | 1416 | uint64_t prev_cycles = env->cp15.c15_ccnt_delta; |
5d05b9d4 AL |
1417 | if (env->cp15.c9_pmcr & PMCRD) { |
1418 | /* Increment once every 64 processor clock cycles */ | |
1419 | prev_cycles /= 64; | |
1420 | } | |
5d05b9d4 | 1421 | env->cp15.c15_ccnt_delta = prev_cycles - env->cp15.c15_ccnt; |
ec7b4ce4 AF |
1422 | } |
1423 | } | |
1424 | ||
5ecdd3e4 AL |
1425 | static void pmevcntr_op_start(CPUARMState *env, uint8_t counter) |
1426 | { | |
1427 | ||
1428 | uint16_t event = env->cp15.c14_pmevtyper[counter] & PMXEVTYPER_EVTCOUNT; | |
1429 | uint64_t count = 0; | |
1430 | if (event_supported(event)) { | |
1431 | uint16_t event_idx = supported_event_map[event]; | |
1432 | count = pm_events[event_idx].get_count(env); | |
1433 | } | |
1434 | ||
1435 | if (pmu_counter_enabled(env, counter)) { | |
f4efb4b2 AL |
1436 | uint32_t new_pmevcntr = count - env->cp15.c14_pmevcntr_delta[counter]; |
1437 | ||
1438 | if (env->cp15.c14_pmevcntr[counter] & ~new_pmevcntr & INT32_MIN) { | |
1439 | env->cp15.c9_pmovsr |= (1 << counter); | |
1440 | pmu_update_irq(env); | |
1441 | } | |
1442 | env->cp15.c14_pmevcntr[counter] = new_pmevcntr; | |
5ecdd3e4 AL |
1443 | } |
1444 | env->cp15.c14_pmevcntr_delta[counter] = count; | |
1445 | } | |
1446 | ||
1447 | static void pmevcntr_op_finish(CPUARMState *env, uint8_t counter) | |
1448 | { | |
1449 | if (pmu_counter_enabled(env, counter)) { | |
4e7beb0c AL |
1450 | #ifndef CONFIG_USER_ONLY |
1451 | uint16_t event = env->cp15.c14_pmevtyper[counter] & PMXEVTYPER_EVTCOUNT; | |
1452 | uint16_t event_idx = supported_event_map[event]; | |
1453 | uint64_t delta = UINT32_MAX - | |
1454 | (uint32_t)env->cp15.c14_pmevcntr[counter] + 1; | |
1455 | int64_t overflow_in = pm_events[event_idx].ns_per_count(delta); | |
1456 | ||
1457 | if (overflow_in > 0) { | |
1458 | int64_t overflow_at = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + | |
1459 | overflow_in; | |
1460 | ARMCPU *cpu = arm_env_get_cpu(env); | |
1461 | timer_mod_anticipate_ns(cpu->pmu_timer, overflow_at); | |
1462 | } | |
1463 | #endif | |
1464 | ||
5ecdd3e4 AL |
1465 | env->cp15.c14_pmevcntr_delta[counter] -= |
1466 | env->cp15.c14_pmevcntr[counter]; | |
1467 | } | |
1468 | } | |
1469 | ||
5d05b9d4 AL |
1470 | void pmu_op_start(CPUARMState *env) |
1471 | { | |
5ecdd3e4 | 1472 | unsigned int i; |
5d05b9d4 | 1473 | pmccntr_op_start(env); |
5ecdd3e4 AL |
1474 | for (i = 0; i < pmu_num_counters(env); i++) { |
1475 | pmevcntr_op_start(env, i); | |
1476 | } | |
5d05b9d4 AL |
1477 | } |
1478 | ||
1479 | void pmu_op_finish(CPUARMState *env) | |
1480 | { | |
5ecdd3e4 | 1481 | unsigned int i; |
5d05b9d4 | 1482 | pmccntr_op_finish(env); |
5ecdd3e4 AL |
1483 | for (i = 0; i < pmu_num_counters(env); i++) { |
1484 | pmevcntr_op_finish(env, i); | |
1485 | } | |
5d05b9d4 AL |
1486 | } |
1487 | ||
033614c4 AL |
1488 | void pmu_pre_el_change(ARMCPU *cpu, void *ignored) |
1489 | { | |
1490 | pmu_op_start(&cpu->env); | |
1491 | } | |
1492 | ||
1493 | void pmu_post_el_change(ARMCPU *cpu, void *ignored) | |
1494 | { | |
1495 | pmu_op_finish(&cpu->env); | |
1496 | } | |
1497 | ||
4e7beb0c AL |
1498 | void arm_pmu_timer_cb(void *opaque) |
1499 | { | |
1500 | ARMCPU *cpu = opaque; | |
1501 | ||
1502 | /* | |
1503 | * Update all the counter values based on the current underlying counts, | |
1504 | * triggering interrupts to be raised, if necessary. pmu_op_finish() also | |
1505 | * has the effect of setting the cpu->pmu_timer to the next earliest time a | |
1506 | * counter may expire. | |
1507 | */ | |
1508 | pmu_op_start(&cpu->env); | |
1509 | pmu_op_finish(&cpu->env); | |
1510 | } | |
1511 | ||
c4241c7d PM |
1512 | static void pmcr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
1513 | uint64_t value) | |
200ac0ef | 1514 | { |
5d05b9d4 | 1515 | pmu_op_start(env); |
7c2cb42b AF |
1516 | |
1517 | if (value & PMCRC) { | |
1518 | /* The counter has been reset */ | |
1519 | env->cp15.c15_ccnt = 0; | |
1520 | } | |
1521 | ||
5ecdd3e4 AL |
1522 | if (value & PMCRP) { |
1523 | unsigned int i; | |
1524 | for (i = 0; i < pmu_num_counters(env); i++) { | |
1525 | env->cp15.c14_pmevcntr[i] = 0; | |
1526 | } | |
1527 | } | |
1528 | ||
200ac0ef PM |
1529 | /* only the DP, X, D and E bits are writable */ |
1530 | env->cp15.c9_pmcr &= ~0x39; | |
1531 | env->cp15.c9_pmcr |= (value & 0x39); | |
7c2cb42b | 1532 | |
5d05b9d4 | 1533 | pmu_op_finish(env); |
7c2cb42b AF |
1534 | } |
1535 | ||
0d4bfd7d AL |
1536 | static void pmswinc_write(CPUARMState *env, const ARMCPRegInfo *ri, |
1537 | uint64_t value) | |
1538 | { | |
1539 | unsigned int i; | |
1540 | for (i = 0; i < pmu_num_counters(env); i++) { | |
1541 | /* Increment a counter's count iff: */ | |
1542 | if ((value & (1 << i)) && /* counter's bit is set */ | |
1543 | /* counter is enabled and not filtered */ | |
1544 | pmu_counter_enabled(env, i) && | |
1545 | /* counter is SW_INCR */ | |
1546 | (env->cp15.c14_pmevtyper[i] & PMXEVTYPER_EVTCOUNT) == 0x0) { | |
1547 | pmevcntr_op_start(env, i); | |
f4efb4b2 AL |
1548 | |
1549 | /* | |
1550 | * Detect if this write causes an overflow since we can't predict | |
1551 | * PMSWINC overflows like we can for other events | |
1552 | */ | |
1553 | uint32_t new_pmswinc = env->cp15.c14_pmevcntr[i] + 1; | |
1554 | ||
1555 | if (env->cp15.c14_pmevcntr[i] & ~new_pmswinc & INT32_MIN) { | |
1556 | env->cp15.c9_pmovsr |= (1 << i); | |
1557 | pmu_update_irq(env); | |
1558 | } | |
1559 | ||
1560 | env->cp15.c14_pmevcntr[i] = new_pmswinc; | |
1561 | ||
0d4bfd7d AL |
1562 | pmevcntr_op_finish(env, i); |
1563 | } | |
1564 | } | |
1565 | } | |
1566 | ||
7c2cb42b AF |
1567 | static uint64_t pmccntr_read(CPUARMState *env, const ARMCPRegInfo *ri) |
1568 | { | |
5d05b9d4 AL |
1569 | uint64_t ret; |
1570 | pmccntr_op_start(env); | |
1571 | ret = env->cp15.c15_ccnt; | |
1572 | pmccntr_op_finish(env); | |
1573 | return ret; | |
7c2cb42b AF |
1574 | } |
1575 | ||
6b040780 WH |
1576 | static void pmselr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
1577 | uint64_t value) | |
1578 | { | |
1579 | /* The value of PMSELR.SEL affects the behavior of PMXEVTYPER and | |
1580 | * PMXEVCNTR. We allow [0..31] to be written to PMSELR here; in the | |
1581 | * meanwhile, we check PMSELR.SEL when PMXEVTYPER and PMXEVCNTR are | |
1582 | * accessed. | |
1583 | */ | |
1584 | env->cp15.c9_pmselr = value & 0x1f; | |
1585 | } | |
1586 | ||
7c2cb42b AF |
1587 | static void pmccntr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
1588 | uint64_t value) | |
1589 | { | |
5d05b9d4 AL |
1590 | pmccntr_op_start(env); |
1591 | env->cp15.c15_ccnt = value; | |
1592 | pmccntr_op_finish(env); | |
200ac0ef | 1593 | } |
421c7ebd PC |
1594 | |
1595 | static void pmccntr_write32(CPUARMState *env, const ARMCPRegInfo *ri, | |
1596 | uint64_t value) | |
1597 | { | |
1598 | uint64_t cur_val = pmccntr_read(env, NULL); | |
1599 | ||
1600 | pmccntr_write(env, ri, deposit64(cur_val, 0, 32, value)); | |
1601 | } | |
1602 | ||
0614601c AF |
1603 | static void pmccfiltr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
1604 | uint64_t value) | |
1605 | { | |
5d05b9d4 | 1606 | pmccntr_op_start(env); |
4b8afa1f AL |
1607 | env->cp15.pmccfiltr_el0 = value & PMCCFILTR_EL0; |
1608 | pmccntr_op_finish(env); | |
1609 | } | |
1610 | ||
1611 | static void pmccfiltr_write_a32(CPUARMState *env, const ARMCPRegInfo *ri, | |
1612 | uint64_t value) | |
1613 | { | |
1614 | pmccntr_op_start(env); | |
1615 | /* M is not accessible from AArch32 */ | |
1616 | env->cp15.pmccfiltr_el0 = (env->cp15.pmccfiltr_el0 & PMCCFILTR_M) | | |
1617 | (value & PMCCFILTR); | |
5d05b9d4 | 1618 | pmccntr_op_finish(env); |
0614601c AF |
1619 | } |
1620 | ||
4b8afa1f AL |
1621 | static uint64_t pmccfiltr_read_a32(CPUARMState *env, const ARMCPRegInfo *ri) |
1622 | { | |
1623 | /* M is not visible in AArch32 */ | |
1624 | return env->cp15.pmccfiltr_el0 & PMCCFILTR; | |
1625 | } | |
1626 | ||
c4241c7d | 1627 | static void pmcntenset_write(CPUARMState *env, const ARMCPRegInfo *ri, |
200ac0ef PM |
1628 | uint64_t value) |
1629 | { | |
7ece99b1 | 1630 | value &= pmu_counter_mask(env); |
200ac0ef | 1631 | env->cp15.c9_pmcnten |= value; |
200ac0ef PM |
1632 | } |
1633 | ||
c4241c7d PM |
1634 | static void pmcntenclr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
1635 | uint64_t value) | |
200ac0ef | 1636 | { |
7ece99b1 | 1637 | value &= pmu_counter_mask(env); |
200ac0ef | 1638 | env->cp15.c9_pmcnten &= ~value; |
200ac0ef PM |
1639 | } |
1640 | ||
c4241c7d PM |
1641 | static void pmovsr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
1642 | uint64_t value) | |
200ac0ef | 1643 | { |
599b71e2 | 1644 | value &= pmu_counter_mask(env); |
200ac0ef | 1645 | env->cp15.c9_pmovsr &= ~value; |
f4efb4b2 | 1646 | pmu_update_irq(env); |
200ac0ef PM |
1647 | } |
1648 | ||
327dd510 AL |
1649 | static void pmovsset_write(CPUARMState *env, const ARMCPRegInfo *ri, |
1650 | uint64_t value) | |
1651 | { | |
1652 | value &= pmu_counter_mask(env); | |
1653 | env->cp15.c9_pmovsr |= value; | |
f4efb4b2 | 1654 | pmu_update_irq(env); |
327dd510 AL |
1655 | } |
1656 | ||
5ecdd3e4 AL |
1657 | static void pmevtyper_write(CPUARMState *env, const ARMCPRegInfo *ri, |
1658 | uint64_t value, const uint8_t counter) | |
200ac0ef | 1659 | { |
5ecdd3e4 AL |
1660 | if (counter == 31) { |
1661 | pmccfiltr_write(env, ri, value); | |
1662 | } else if (counter < pmu_num_counters(env)) { | |
1663 | pmevcntr_op_start(env, counter); | |
1664 | ||
1665 | /* | |
1666 | * If this counter's event type is changing, store the current | |
1667 | * underlying count for the new type in c14_pmevcntr_delta[counter] so | |
1668 | * pmevcntr_op_finish has the correct baseline when it converts back to | |
1669 | * a delta. | |
1670 | */ | |
1671 | uint16_t old_event = env->cp15.c14_pmevtyper[counter] & | |
1672 | PMXEVTYPER_EVTCOUNT; | |
1673 | uint16_t new_event = value & PMXEVTYPER_EVTCOUNT; | |
1674 | if (old_event != new_event) { | |
1675 | uint64_t count = 0; | |
1676 | if (event_supported(new_event)) { | |
1677 | uint16_t event_idx = supported_event_map[new_event]; | |
1678 | count = pm_events[event_idx].get_count(env); | |
1679 | } | |
1680 | env->cp15.c14_pmevcntr_delta[counter] = count; | |
1681 | } | |
1682 | ||
1683 | env->cp15.c14_pmevtyper[counter] = value & PMXEVTYPER_MASK; | |
1684 | pmevcntr_op_finish(env, counter); | |
1685 | } | |
fdb86656 WH |
1686 | /* Attempts to access PMXEVTYPER are CONSTRAINED UNPREDICTABLE when |
1687 | * PMSELR value is equal to or greater than the number of implemented | |
1688 | * counters, but not equal to 0x1f. We opt to behave as a RAZ/WI. | |
1689 | */ | |
5ecdd3e4 AL |
1690 | } |
1691 | ||
1692 | static uint64_t pmevtyper_read(CPUARMState *env, const ARMCPRegInfo *ri, | |
1693 | const uint8_t counter) | |
1694 | { | |
1695 | if (counter == 31) { | |
1696 | return env->cp15.pmccfiltr_el0; | |
1697 | } else if (counter < pmu_num_counters(env)) { | |
1698 | return env->cp15.c14_pmevtyper[counter]; | |
1699 | } else { | |
1700 | /* | |
1701 | * We opt to behave as a RAZ/WI when attempts to access PMXEVTYPER | |
1702 | * are CONSTRAINED UNPREDICTABLE. See comments in pmevtyper_write(). | |
1703 | */ | |
1704 | return 0; | |
1705 | } | |
1706 | } | |
1707 | ||
1708 | static void pmevtyper_writefn(CPUARMState *env, const ARMCPRegInfo *ri, | |
1709 | uint64_t value) | |
1710 | { | |
1711 | uint8_t counter = ((ri->crm & 3) << 3) | (ri->opc2 & 7); | |
1712 | pmevtyper_write(env, ri, value, counter); | |
1713 | } | |
1714 | ||
1715 | static void pmevtyper_rawwrite(CPUARMState *env, const ARMCPRegInfo *ri, | |
1716 | uint64_t value) | |
1717 | { | |
1718 | uint8_t counter = ((ri->crm & 3) << 3) | (ri->opc2 & 7); | |
1719 | env->cp15.c14_pmevtyper[counter] = value; | |
1720 | ||
1721 | /* | |
1722 | * pmevtyper_rawwrite is called between a pair of pmu_op_start and | |
1723 | * pmu_op_finish calls when loading saved state for a migration. Because | |
1724 | * we're potentially updating the type of event here, the value written to | |
1725 | * c14_pmevcntr_delta by the preceeding pmu_op_start call may be for a | |
1726 | * different counter type. Therefore, we need to set this value to the | |
1727 | * current count for the counter type we're writing so that pmu_op_finish | |
1728 | * has the correct count for its calculation. | |
1729 | */ | |
1730 | uint16_t event = value & PMXEVTYPER_EVTCOUNT; | |
1731 | if (event_supported(event)) { | |
1732 | uint16_t event_idx = supported_event_map[event]; | |
1733 | env->cp15.c14_pmevcntr_delta[counter] = | |
1734 | pm_events[event_idx].get_count(env); | |
fdb86656 WH |
1735 | } |
1736 | } | |
1737 | ||
5ecdd3e4 AL |
1738 | static uint64_t pmevtyper_readfn(CPUARMState *env, const ARMCPRegInfo *ri) |
1739 | { | |
1740 | uint8_t counter = ((ri->crm & 3) << 3) | (ri->opc2 & 7); | |
1741 | return pmevtyper_read(env, ri, counter); | |
1742 | } | |
1743 | ||
1744 | static void pmxevtyper_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
1745 | uint64_t value) | |
1746 | { | |
1747 | pmevtyper_write(env, ri, value, env->cp15.c9_pmselr & 31); | |
1748 | } | |
1749 | ||
fdb86656 WH |
1750 | static uint64_t pmxevtyper_read(CPUARMState *env, const ARMCPRegInfo *ri) |
1751 | { | |
5ecdd3e4 AL |
1752 | return pmevtyper_read(env, ri, env->cp15.c9_pmselr & 31); |
1753 | } | |
1754 | ||
1755 | static void pmevcntr_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
1756 | uint64_t value, uint8_t counter) | |
1757 | { | |
1758 | if (counter < pmu_num_counters(env)) { | |
1759 | pmevcntr_op_start(env, counter); | |
1760 | env->cp15.c14_pmevcntr[counter] = value; | |
1761 | pmevcntr_op_finish(env, counter); | |
1762 | } | |
1763 | /* | |
1764 | * We opt to behave as a RAZ/WI when attempts to access PM[X]EVCNTR | |
1765 | * are CONSTRAINED UNPREDICTABLE. | |
fdb86656 | 1766 | */ |
5ecdd3e4 AL |
1767 | } |
1768 | ||
1769 | static uint64_t pmevcntr_read(CPUARMState *env, const ARMCPRegInfo *ri, | |
1770 | uint8_t counter) | |
1771 | { | |
1772 | if (counter < pmu_num_counters(env)) { | |
1773 | uint64_t ret; | |
1774 | pmevcntr_op_start(env, counter); | |
1775 | ret = env->cp15.c14_pmevcntr[counter]; | |
1776 | pmevcntr_op_finish(env, counter); | |
1777 | return ret; | |
fdb86656 | 1778 | } else { |
5ecdd3e4 AL |
1779 | /* We opt to behave as a RAZ/WI when attempts to access PM[X]EVCNTR |
1780 | * are CONSTRAINED UNPREDICTABLE. */ | |
fdb86656 WH |
1781 | return 0; |
1782 | } | |
200ac0ef PM |
1783 | } |
1784 | ||
5ecdd3e4 AL |
1785 | static void pmevcntr_writefn(CPUARMState *env, const ARMCPRegInfo *ri, |
1786 | uint64_t value) | |
1787 | { | |
1788 | uint8_t counter = ((ri->crm & 3) << 3) | (ri->opc2 & 7); | |
1789 | pmevcntr_write(env, ri, value, counter); | |
1790 | } | |
1791 | ||
1792 | static uint64_t pmevcntr_readfn(CPUARMState *env, const ARMCPRegInfo *ri) | |
1793 | { | |
1794 | uint8_t counter = ((ri->crm & 3) << 3) | (ri->opc2 & 7); | |
1795 | return pmevcntr_read(env, ri, counter); | |
1796 | } | |
1797 | ||
1798 | static void pmevcntr_rawwrite(CPUARMState *env, const ARMCPRegInfo *ri, | |
1799 | uint64_t value) | |
1800 | { | |
1801 | uint8_t counter = ((ri->crm & 3) << 3) | (ri->opc2 & 7); | |
1802 | assert(counter < pmu_num_counters(env)); | |
1803 | env->cp15.c14_pmevcntr[counter] = value; | |
1804 | pmevcntr_write(env, ri, value, counter); | |
1805 | } | |
1806 | ||
1807 | static uint64_t pmevcntr_rawread(CPUARMState *env, const ARMCPRegInfo *ri) | |
1808 | { | |
1809 | uint8_t counter = ((ri->crm & 3) << 3) | (ri->opc2 & 7); | |
1810 | assert(counter < pmu_num_counters(env)); | |
1811 | return env->cp15.c14_pmevcntr[counter]; | |
1812 | } | |
1813 | ||
1814 | static void pmxevcntr_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
1815 | uint64_t value) | |
1816 | { | |
1817 | pmevcntr_write(env, ri, value, env->cp15.c9_pmselr & 31); | |
1818 | } | |
1819 | ||
1820 | static uint64_t pmxevcntr_read(CPUARMState *env, const ARMCPRegInfo *ri) | |
1821 | { | |
1822 | return pmevcntr_read(env, ri, env->cp15.c9_pmselr & 31); | |
1823 | } | |
1824 | ||
c4241c7d | 1825 | static void pmuserenr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
200ac0ef PM |
1826 | uint64_t value) |
1827 | { | |
6ecd0b6b AB |
1828 | if (arm_feature(env, ARM_FEATURE_V8)) { |
1829 | env->cp15.c9_pmuserenr = value & 0xf; | |
1830 | } else { | |
1831 | env->cp15.c9_pmuserenr = value & 1; | |
1832 | } | |
200ac0ef PM |
1833 | } |
1834 | ||
c4241c7d PM |
1835 | static void pmintenset_write(CPUARMState *env, const ARMCPRegInfo *ri, |
1836 | uint64_t value) | |
200ac0ef PM |
1837 | { |
1838 | /* We have no event counters so only the C bit can be changed */ | |
7ece99b1 | 1839 | value &= pmu_counter_mask(env); |
200ac0ef | 1840 | env->cp15.c9_pminten |= value; |
f4efb4b2 | 1841 | pmu_update_irq(env); |
200ac0ef PM |
1842 | } |
1843 | ||
c4241c7d PM |
1844 | static void pmintenclr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
1845 | uint64_t value) | |
200ac0ef | 1846 | { |
7ece99b1 | 1847 | value &= pmu_counter_mask(env); |
200ac0ef | 1848 | env->cp15.c9_pminten &= ~value; |
f4efb4b2 | 1849 | pmu_update_irq(env); |
200ac0ef PM |
1850 | } |
1851 | ||
c4241c7d PM |
1852 | static void vbar_write(CPUARMState *env, const ARMCPRegInfo *ri, |
1853 | uint64_t value) | |
8641136c | 1854 | { |
a505d7fe PM |
1855 | /* Note that even though the AArch64 view of this register has bits |
1856 | * [10:0] all RES0 we can only mask the bottom 5, to comply with the | |
1857 | * architectural requirements for bits which are RES0 only in some | |
1858 | * contexts. (ARMv8 would permit us to do no masking at all, but ARMv7 | |
1859 | * requires the bottom five bits to be RAZ/WI because they're UNK/SBZP.) | |
1860 | */ | |
855ea66d | 1861 | raw_write(env, ri, value & ~0x1FULL); |
8641136c NR |
1862 | } |
1863 | ||
64e0e2de EI |
1864 | static void scr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) |
1865 | { | |
ea22747c RH |
1866 | /* Begin with base v8.0 state. */ |
1867 | uint32_t valid_mask = 0x3fff; | |
2d7137c1 | 1868 | ARMCPU *cpu = arm_env_get_cpu(env); |
ea22747c RH |
1869 | |
1870 | if (arm_el_is_aa64(env, 3)) { | |
1871 | value |= SCR_FW | SCR_AW; /* these two bits are RES1. */ | |
1872 | valid_mask &= ~SCR_NET; | |
1873 | } else { | |
1874 | valid_mask &= ~(SCR_RW | SCR_ST); | |
1875 | } | |
64e0e2de EI |
1876 | |
1877 | if (!arm_feature(env, ARM_FEATURE_EL2)) { | |
1878 | valid_mask &= ~SCR_HCE; | |
1879 | ||
1880 | /* On ARMv7, SMD (or SCD as it is called in v7) is only | |
1881 | * supported if EL2 exists. The bit is UNK/SBZP when | |
1882 | * EL2 is unavailable. In QEMU ARMv7, we force it to always zero | |
1883 | * when EL2 is unavailable. | |
4eb27640 | 1884 | * On ARMv8, this bit is always available. |
64e0e2de | 1885 | */ |
4eb27640 GB |
1886 | if (arm_feature(env, ARM_FEATURE_V7) && |
1887 | !arm_feature(env, ARM_FEATURE_V8)) { | |
64e0e2de EI |
1888 | valid_mask &= ~SCR_SMD; |
1889 | } | |
1890 | } | |
2d7137c1 RH |
1891 | if (cpu_isar_feature(aa64_lor, cpu)) { |
1892 | valid_mask |= SCR_TLOR; | |
1893 | } | |
ef682cdb RH |
1894 | if (cpu_isar_feature(aa64_pauth, cpu)) { |
1895 | valid_mask |= SCR_API | SCR_APK; | |
1896 | } | |
64e0e2de EI |
1897 | |
1898 | /* Clear all-context RES0 bits. */ | |
1899 | value &= valid_mask; | |
1900 | raw_write(env, ri, value); | |
1901 | } | |
1902 | ||
c4241c7d | 1903 | static uint64_t ccsidr_read(CPUARMState *env, const ARMCPRegInfo *ri) |
776d4e5c PM |
1904 | { |
1905 | ARMCPU *cpu = arm_env_get_cpu(env); | |
b85a1fd6 FA |
1906 | |
1907 | /* Acquire the CSSELR index from the bank corresponding to the CCSIDR | |
1908 | * bank | |
1909 | */ | |
1910 | uint32_t index = A32_BANKED_REG_GET(env, csselr, | |
1911 | ri->secure & ARM_CP_SECSTATE_S); | |
1912 | ||
1913 | return cpu->ccsidr[index]; | |
776d4e5c PM |
1914 | } |
1915 | ||
c4241c7d PM |
1916 | static void csselr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
1917 | uint64_t value) | |
776d4e5c | 1918 | { |
8d5c773e | 1919 | raw_write(env, ri, value & 0xf); |
776d4e5c PM |
1920 | } |
1921 | ||
1090b9c6 PM |
1922 | static uint64_t isr_read(CPUARMState *env, const ARMCPRegInfo *ri) |
1923 | { | |
29a0af61 | 1924 | CPUState *cs = env_cpu(env); |
f7778444 | 1925 | uint64_t hcr_el2 = arm_hcr_el2_eff(env); |
1090b9c6 PM |
1926 | uint64_t ret = 0; |
1927 | ||
f7778444 | 1928 | if (hcr_el2 & HCR_IMO) { |
636540e9 PM |
1929 | if (cs->interrupt_request & CPU_INTERRUPT_VIRQ) { |
1930 | ret |= CPSR_I; | |
1931 | } | |
1932 | } else { | |
1933 | if (cs->interrupt_request & CPU_INTERRUPT_HARD) { | |
1934 | ret |= CPSR_I; | |
1935 | } | |
1090b9c6 | 1936 | } |
636540e9 | 1937 | |
f7778444 | 1938 | if (hcr_el2 & HCR_FMO) { |
636540e9 PM |
1939 | if (cs->interrupt_request & CPU_INTERRUPT_VFIQ) { |
1940 | ret |= CPSR_F; | |
1941 | } | |
1942 | } else { | |
1943 | if (cs->interrupt_request & CPU_INTERRUPT_FIQ) { | |
1944 | ret |= CPSR_F; | |
1945 | } | |
1090b9c6 | 1946 | } |
636540e9 | 1947 | |
1090b9c6 PM |
1948 | /* External aborts are not possible in QEMU so A bit is always clear */ |
1949 | return ret; | |
1950 | } | |
1951 | ||
e9aa6c21 | 1952 | static const ARMCPRegInfo v7_cp_reginfo[] = { |
7d57f408 PM |
1953 | /* the old v6 WFI, UNPREDICTABLE in v7 but we choose to NOP */ |
1954 | { .name = "NOP", .cp = 15, .crn = 7, .crm = 0, .opc1 = 0, .opc2 = 4, | |
1955 | .access = PL1_W, .type = ARM_CP_NOP }, | |
200ac0ef PM |
1956 | /* Performance monitors are implementation defined in v7, |
1957 | * but with an ARM recommended set of registers, which we | |
ac689a2e | 1958 | * follow. |
200ac0ef PM |
1959 | * |
1960 | * Performance registers fall into three categories: | |
1961 | * (a) always UNDEF in PL0, RW in PL1 (PMINTENSET, PMINTENCLR) | |
1962 | * (b) RO in PL0 (ie UNDEF on write), RW in PL1 (PMUSERENR) | |
1963 | * (c) UNDEF in PL0 if PMUSERENR.EN==0, otherwise accessible (all others) | |
1964 | * For the cases controlled by PMUSERENR we must set .access to PL0_RW | |
1965 | * or PL0_RO as appropriate and then check PMUSERENR in the helper fn. | |
1966 | */ | |
1967 | { .name = "PMCNTENSET", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 1, | |
7a0e58fa | 1968 | .access = PL0_RW, .type = ARM_CP_ALIAS, |
8521466b | 1969 | .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmcnten), |
fcd25206 PM |
1970 | .writefn = pmcntenset_write, |
1971 | .accessfn = pmreg_access, | |
1972 | .raw_writefn = raw_write }, | |
8521466b AF |
1973 | { .name = "PMCNTENSET_EL0", .state = ARM_CP_STATE_AA64, |
1974 | .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 1, | |
1975 | .access = PL0_RW, .accessfn = pmreg_access, | |
1976 | .fieldoffset = offsetof(CPUARMState, cp15.c9_pmcnten), .resetvalue = 0, | |
1977 | .writefn = pmcntenset_write, .raw_writefn = raw_write }, | |
200ac0ef | 1978 | { .name = "PMCNTENCLR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 2, |
8521466b AF |
1979 | .access = PL0_RW, |
1980 | .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmcnten), | |
fcd25206 PM |
1981 | .accessfn = pmreg_access, |
1982 | .writefn = pmcntenclr_write, | |
7a0e58fa | 1983 | .type = ARM_CP_ALIAS }, |
8521466b AF |
1984 | { .name = "PMCNTENCLR_EL0", .state = ARM_CP_STATE_AA64, |
1985 | .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 2, | |
1986 | .access = PL0_RW, .accessfn = pmreg_access, | |
7a0e58fa | 1987 | .type = ARM_CP_ALIAS, |
8521466b AF |
1988 | .fieldoffset = offsetof(CPUARMState, cp15.c9_pmcnten), |
1989 | .writefn = pmcntenclr_write }, | |
200ac0ef | 1990 | { .name = "PMOVSR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 3, |
f4efb4b2 | 1991 | .access = PL0_RW, .type = ARM_CP_IO, |
e4e91a21 | 1992 | .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmovsr), |
fcd25206 PM |
1993 | .accessfn = pmreg_access, |
1994 | .writefn = pmovsr_write, | |
1995 | .raw_writefn = raw_write }, | |
978364f1 AF |
1996 | { .name = "PMOVSCLR_EL0", .state = ARM_CP_STATE_AA64, |
1997 | .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 3, | |
1998 | .access = PL0_RW, .accessfn = pmreg_access, | |
f4efb4b2 | 1999 | .type = ARM_CP_ALIAS | ARM_CP_IO, |
978364f1 AF |
2000 | .fieldoffset = offsetof(CPUARMState, cp15.c9_pmovsr), |
2001 | .writefn = pmovsr_write, | |
2002 | .raw_writefn = raw_write }, | |
200ac0ef | 2003 | { .name = "PMSWINC", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 4, |
f4efb4b2 AL |
2004 | .access = PL0_W, .accessfn = pmreg_access_swinc, |
2005 | .type = ARM_CP_NO_RAW | ARM_CP_IO, | |
0d4bfd7d AL |
2006 | .writefn = pmswinc_write }, |
2007 | { .name = "PMSWINC_EL0", .state = ARM_CP_STATE_AA64, | |
2008 | .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 4, | |
f4efb4b2 AL |
2009 | .access = PL0_W, .accessfn = pmreg_access_swinc, |
2010 | .type = ARM_CP_NO_RAW | ARM_CP_IO, | |
0d4bfd7d | 2011 | .writefn = pmswinc_write }, |
6b040780 WH |
2012 | { .name = "PMSELR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 5, |
2013 | .access = PL0_RW, .type = ARM_CP_ALIAS, | |
2014 | .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmselr), | |
6ecd0b6b | 2015 | .accessfn = pmreg_access_selr, .writefn = pmselr_write, |
6b040780 WH |
2016 | .raw_writefn = raw_write}, |
2017 | { .name = "PMSELR_EL0", .state = ARM_CP_STATE_AA64, | |
2018 | .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 5, | |
6ecd0b6b | 2019 | .access = PL0_RW, .accessfn = pmreg_access_selr, |
6b040780 WH |
2020 | .fieldoffset = offsetof(CPUARMState, cp15.c9_pmselr), |
2021 | .writefn = pmselr_write, .raw_writefn = raw_write, }, | |
200ac0ef | 2022 | { .name = "PMCCNTR", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 0, |
169c8938 | 2023 | .access = PL0_RW, .resetvalue = 0, .type = ARM_CP_ALIAS | ARM_CP_IO, |
421c7ebd | 2024 | .readfn = pmccntr_read, .writefn = pmccntr_write32, |
6ecd0b6b | 2025 | .accessfn = pmreg_access_ccntr }, |
8521466b AF |
2026 | { .name = "PMCCNTR_EL0", .state = ARM_CP_STATE_AA64, |
2027 | .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 13, .opc2 = 0, | |
6ecd0b6b | 2028 | .access = PL0_RW, .accessfn = pmreg_access_ccntr, |
8521466b | 2029 | .type = ARM_CP_IO, |
980ebe87 AL |
2030 | .fieldoffset = offsetof(CPUARMState, cp15.c15_ccnt), |
2031 | .readfn = pmccntr_read, .writefn = pmccntr_write, | |
2032 | .raw_readfn = raw_read, .raw_writefn = raw_write, }, | |
4b8afa1f AL |
2033 | { .name = "PMCCFILTR", .cp = 15, .opc1 = 0, .crn = 14, .crm = 15, .opc2 = 7, |
2034 | .writefn = pmccfiltr_write_a32, .readfn = pmccfiltr_read_a32, | |
2035 | .access = PL0_RW, .accessfn = pmreg_access, | |
2036 | .type = ARM_CP_ALIAS | ARM_CP_IO, | |
2037 | .resetvalue = 0, }, | |
8521466b AF |
2038 | { .name = "PMCCFILTR_EL0", .state = ARM_CP_STATE_AA64, |
2039 | .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 15, .opc2 = 7, | |
980ebe87 | 2040 | .writefn = pmccfiltr_write, .raw_writefn = raw_write, |
8521466b AF |
2041 | .access = PL0_RW, .accessfn = pmreg_access, |
2042 | .type = ARM_CP_IO, | |
2043 | .fieldoffset = offsetof(CPUARMState, cp15.pmccfiltr_el0), | |
2044 | .resetvalue = 0, }, | |
200ac0ef | 2045 | { .name = "PMXEVTYPER", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 1, |
5ecdd3e4 AL |
2046 | .access = PL0_RW, .type = ARM_CP_NO_RAW | ARM_CP_IO, |
2047 | .accessfn = pmreg_access, | |
fdb86656 WH |
2048 | .writefn = pmxevtyper_write, .readfn = pmxevtyper_read }, |
2049 | { .name = "PMXEVTYPER_EL0", .state = ARM_CP_STATE_AA64, | |
2050 | .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 13, .opc2 = 1, | |
5ecdd3e4 AL |
2051 | .access = PL0_RW, .type = ARM_CP_NO_RAW | ARM_CP_IO, |
2052 | .accessfn = pmreg_access, | |
fdb86656 | 2053 | .writefn = pmxevtyper_write, .readfn = pmxevtyper_read }, |
200ac0ef | 2054 | { .name = "PMXEVCNTR", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 2, |
5ecdd3e4 AL |
2055 | .access = PL0_RW, .type = ARM_CP_NO_RAW | ARM_CP_IO, |
2056 | .accessfn = pmreg_access_xevcntr, | |
2057 | .writefn = pmxevcntr_write, .readfn = pmxevcntr_read }, | |
2058 | { .name = "PMXEVCNTR_EL0", .state = ARM_CP_STATE_AA64, | |
2059 | .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 13, .opc2 = 2, | |
2060 | .access = PL0_RW, .type = ARM_CP_NO_RAW | ARM_CP_IO, | |
2061 | .accessfn = pmreg_access_xevcntr, | |
2062 | .writefn = pmxevcntr_write, .readfn = pmxevcntr_read }, | |
200ac0ef | 2063 | { .name = "PMUSERENR", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 0, |
1fce1ba9 | 2064 | .access = PL0_R | PL1_RW, .accessfn = access_tpm, |
e4e91a21 | 2065 | .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmuserenr), |
200ac0ef | 2066 | .resetvalue = 0, |
d4e6df63 | 2067 | .writefn = pmuserenr_write, .raw_writefn = raw_write }, |
8a83ffc2 AF |
2068 | { .name = "PMUSERENR_EL0", .state = ARM_CP_STATE_AA64, |
2069 | .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 14, .opc2 = 0, | |
1fce1ba9 | 2070 | .access = PL0_R | PL1_RW, .accessfn = access_tpm, .type = ARM_CP_ALIAS, |
8a83ffc2 AF |
2071 | .fieldoffset = offsetof(CPUARMState, cp15.c9_pmuserenr), |
2072 | .resetvalue = 0, | |
2073 | .writefn = pmuserenr_write, .raw_writefn = raw_write }, | |
200ac0ef | 2074 | { .name = "PMINTENSET", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 1, |
1fce1ba9 | 2075 | .access = PL1_RW, .accessfn = access_tpm, |
b7d793ad | 2076 | .type = ARM_CP_ALIAS | ARM_CP_IO, |
e6ec5457 | 2077 | .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pminten), |
200ac0ef | 2078 | .resetvalue = 0, |
d4e6df63 | 2079 | .writefn = pmintenset_write, .raw_writefn = raw_write }, |
e6ec5457 WH |
2080 | { .name = "PMINTENSET_EL1", .state = ARM_CP_STATE_AA64, |
2081 | .opc0 = 3, .opc1 = 0, .crn = 9, .crm = 14, .opc2 = 1, | |
2082 | .access = PL1_RW, .accessfn = access_tpm, | |
2083 | .type = ARM_CP_IO, | |
2084 | .fieldoffset = offsetof(CPUARMState, cp15.c9_pminten), | |
2085 | .writefn = pmintenset_write, .raw_writefn = raw_write, | |
2086 | .resetvalue = 0x0 }, | |
200ac0ef | 2087 | { .name = "PMINTENCLR", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 2, |
fc5f6856 AL |
2088 | .access = PL1_RW, .accessfn = access_tpm, |
2089 | .type = ARM_CP_ALIAS | ARM_CP_IO, | |
200ac0ef | 2090 | .fieldoffset = offsetof(CPUARMState, cp15.c9_pminten), |
b061a82b | 2091 | .writefn = pmintenclr_write, }, |
978364f1 AF |
2092 | { .name = "PMINTENCLR_EL1", .state = ARM_CP_STATE_AA64, |
2093 | .opc0 = 3, .opc1 = 0, .crn = 9, .crm = 14, .opc2 = 2, | |
fc5f6856 AL |
2094 | .access = PL1_RW, .accessfn = access_tpm, |
2095 | .type = ARM_CP_ALIAS | ARM_CP_IO, | |
978364f1 AF |
2096 | .fieldoffset = offsetof(CPUARMState, cp15.c9_pminten), |
2097 | .writefn = pmintenclr_write }, | |
7da845b0 PM |
2098 | { .name = "CCSIDR", .state = ARM_CP_STATE_BOTH, |
2099 | .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = 0, | |
7a0e58fa | 2100 | .access = PL1_R, .readfn = ccsidr_read, .type = ARM_CP_NO_RAW }, |
7da845b0 PM |
2101 | { .name = "CSSELR", .state = ARM_CP_STATE_BOTH, |
2102 | .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 2, .opc2 = 0, | |
b85a1fd6 FA |
2103 | .access = PL1_RW, .writefn = csselr_write, .resetvalue = 0, |
2104 | .bank_fieldoffsets = { offsetof(CPUARMState, cp15.csselr_s), | |
2105 | offsetof(CPUARMState, cp15.csselr_ns) } }, | |
776d4e5c PM |
2106 | /* Auxiliary ID register: this actually has an IMPDEF value but for now |
2107 | * just RAZ for all cores: | |
2108 | */ | |
0ff644a7 PM |
2109 | { .name = "AIDR", .state = ARM_CP_STATE_BOTH, |
2110 | .opc0 = 3, .opc1 = 1, .crn = 0, .crm = 0, .opc2 = 7, | |
776d4e5c | 2111 | .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 }, |
f32cdad5 PM |
2112 | /* Auxiliary fault status registers: these also are IMPDEF, and we |
2113 | * choose to RAZ/WI for all cores. | |
2114 | */ | |
2115 | { .name = "AFSR0_EL1", .state = ARM_CP_STATE_BOTH, | |
2116 | .opc0 = 3, .opc1 = 0, .crn = 5, .crm = 1, .opc2 = 0, | |
2117 | .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
2118 | { .name = "AFSR1_EL1", .state = ARM_CP_STATE_BOTH, | |
2119 | .opc0 = 3, .opc1 = 0, .crn = 5, .crm = 1, .opc2 = 1, | |
2120 | .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
b0fe2427 PM |
2121 | /* MAIR can just read-as-written because we don't implement caches |
2122 | * and so don't need to care about memory attributes. | |
2123 | */ | |
2124 | { .name = "MAIR_EL1", .state = ARM_CP_STATE_AA64, | |
2125 | .opc0 = 3, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 0, | |
be693c87 | 2126 | .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[1]), |
b0fe2427 | 2127 | .resetvalue = 0 }, |
4cfb8ad8 PM |
2128 | { .name = "MAIR_EL3", .state = ARM_CP_STATE_AA64, |
2129 | .opc0 = 3, .opc1 = 6, .crn = 10, .crm = 2, .opc2 = 0, | |
2130 | .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[3]), | |
2131 | .resetvalue = 0 }, | |
b0fe2427 PM |
2132 | /* For non-long-descriptor page tables these are PRRR and NMRR; |
2133 | * regardless they still act as reads-as-written for QEMU. | |
b0fe2427 | 2134 | */ |
1281f8e3 | 2135 | /* MAIR0/1 are defined separately from their 64-bit counterpart which |
be693c87 GB |
2136 | * allows them to assign the correct fieldoffset based on the endianness |
2137 | * handled in the field definitions. | |
2138 | */ | |
a903c449 | 2139 | { .name = "MAIR0", .state = ARM_CP_STATE_AA32, |
b0fe2427 | 2140 | .cp = 15, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 0, .access = PL1_RW, |
be693c87 GB |
2141 | .bank_fieldoffsets = { offsetof(CPUARMState, cp15.mair0_s), |
2142 | offsetof(CPUARMState, cp15.mair0_ns) }, | |
b0fe2427 | 2143 | .resetfn = arm_cp_reset_ignore }, |
a903c449 | 2144 | { .name = "MAIR1", .state = ARM_CP_STATE_AA32, |
b0fe2427 | 2145 | .cp = 15, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 1, .access = PL1_RW, |
be693c87 GB |
2146 | .bank_fieldoffsets = { offsetof(CPUARMState, cp15.mair1_s), |
2147 | offsetof(CPUARMState, cp15.mair1_ns) }, | |
b0fe2427 | 2148 | .resetfn = arm_cp_reset_ignore }, |
1090b9c6 PM |
2149 | { .name = "ISR_EL1", .state = ARM_CP_STATE_BOTH, |
2150 | .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 1, .opc2 = 0, | |
7a0e58fa | 2151 | .type = ARM_CP_NO_RAW, .access = PL1_R, .readfn = isr_read }, |
995939a6 PM |
2152 | /* 32 bit ITLB invalidates */ |
2153 | { .name = "ITLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 0, | |
7a0e58fa | 2154 | .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write }, |
995939a6 | 2155 | { .name = "ITLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 1, |
7a0e58fa | 2156 | .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write }, |
995939a6 | 2157 | { .name = "ITLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 2, |
7a0e58fa | 2158 | .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write }, |
995939a6 PM |
2159 | /* 32 bit DTLB invalidates */ |
2160 | { .name = "DTLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 0, | |
7a0e58fa | 2161 | .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write }, |
995939a6 | 2162 | { .name = "DTLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 1, |
7a0e58fa | 2163 | .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write }, |
995939a6 | 2164 | { .name = "DTLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 2, |
7a0e58fa | 2165 | .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write }, |
995939a6 PM |
2166 | /* 32 bit TLB invalidates */ |
2167 | { .name = "TLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 0, | |
7a0e58fa | 2168 | .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write }, |
995939a6 | 2169 | { .name = "TLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 1, |
7a0e58fa | 2170 | .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write }, |
995939a6 | 2171 | { .name = "TLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 2, |
7a0e58fa | 2172 | .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write }, |
995939a6 | 2173 | { .name = "TLBIMVAA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 3, |
7a0e58fa | 2174 | .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimvaa_write }, |
995939a6 PM |
2175 | REGINFO_SENTINEL |
2176 | }; | |
2177 | ||
2178 | static const ARMCPRegInfo v7mp_cp_reginfo[] = { | |
2179 | /* 32 bit TLB invalidates, Inner Shareable */ | |
2180 | { .name = "TLBIALLIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 0, | |
7a0e58fa | 2181 | .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_is_write }, |
995939a6 | 2182 | { .name = "TLBIMVAIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 1, |
7a0e58fa | 2183 | .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_is_write }, |
995939a6 | 2184 | { .name = "TLBIASIDIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 2, |
7a0e58fa | 2185 | .type = ARM_CP_NO_RAW, .access = PL1_W, |
fa439fc5 | 2186 | .writefn = tlbiasid_is_write }, |
995939a6 | 2187 | { .name = "TLBIMVAAIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 3, |
7a0e58fa | 2188 | .type = ARM_CP_NO_RAW, .access = PL1_W, |
fa439fc5 | 2189 | .writefn = tlbimvaa_is_write }, |
e9aa6c21 PM |
2190 | REGINFO_SENTINEL |
2191 | }; | |
2192 | ||
327dd510 AL |
2193 | static const ARMCPRegInfo pmovsset_cp_reginfo[] = { |
2194 | /* PMOVSSET is not implemented in v7 before v7ve */ | |
2195 | { .name = "PMOVSSET", .cp = 15, .opc1 = 0, .crn = 9, .crm = 14, .opc2 = 3, | |
2196 | .access = PL0_RW, .accessfn = pmreg_access, | |
f4efb4b2 | 2197 | .type = ARM_CP_ALIAS | ARM_CP_IO, |
327dd510 AL |
2198 | .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmovsr), |
2199 | .writefn = pmovsset_write, | |
2200 | .raw_writefn = raw_write }, | |
2201 | { .name = "PMOVSSET_EL0", .state = ARM_CP_STATE_AA64, | |
2202 | .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 14, .opc2 = 3, | |
2203 | .access = PL0_RW, .accessfn = pmreg_access, | |
f4efb4b2 | 2204 | .type = ARM_CP_ALIAS | ARM_CP_IO, |
327dd510 AL |
2205 | .fieldoffset = offsetof(CPUARMState, cp15.c9_pmovsr), |
2206 | .writefn = pmovsset_write, | |
2207 | .raw_writefn = raw_write }, | |
2208 | REGINFO_SENTINEL | |
2209 | }; | |
2210 | ||
c4241c7d PM |
2211 | static void teecr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
2212 | uint64_t value) | |
c326b979 PM |
2213 | { |
2214 | value &= 1; | |
2215 | env->teecr = value; | |
c326b979 PM |
2216 | } |
2217 | ||
3f208fd7 PM |
2218 | static CPAccessResult teehbr_access(CPUARMState *env, const ARMCPRegInfo *ri, |
2219 | bool isread) | |
c326b979 | 2220 | { |
dcbff19b | 2221 | if (arm_current_el(env) == 0 && (env->teecr & 1)) { |
92611c00 | 2222 | return CP_ACCESS_TRAP; |
c326b979 | 2223 | } |
92611c00 | 2224 | return CP_ACCESS_OK; |
c326b979 PM |
2225 | } |
2226 | ||
2227 | static const ARMCPRegInfo t2ee_cp_reginfo[] = { | |
2228 | { .name = "TEECR", .cp = 14, .crn = 0, .crm = 0, .opc1 = 6, .opc2 = 0, | |
2229 | .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, teecr), | |
2230 | .resetvalue = 0, | |
2231 | .writefn = teecr_write }, | |
2232 | { .name = "TEEHBR", .cp = 14, .crn = 1, .crm = 0, .opc1 = 6, .opc2 = 0, | |
2233 | .access = PL0_RW, .fieldoffset = offsetof(CPUARMState, teehbr), | |
92611c00 | 2234 | .accessfn = teehbr_access, .resetvalue = 0 }, |
c326b979 PM |
2235 | REGINFO_SENTINEL |
2236 | }; | |
2237 | ||
4d31c596 | 2238 | static const ARMCPRegInfo v6k_cp_reginfo[] = { |
e4fe830b PM |
2239 | { .name = "TPIDR_EL0", .state = ARM_CP_STATE_AA64, |
2240 | .opc0 = 3, .opc1 = 3, .opc2 = 2, .crn = 13, .crm = 0, | |
2241 | .access = PL0_RW, | |
54bf36ed | 2242 | .fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[0]), .resetvalue = 0 }, |
4d31c596 PM |
2243 | { .name = "TPIDRURW", .cp = 15, .crn = 13, .crm = 0, .opc1 = 0, .opc2 = 2, |
2244 | .access = PL0_RW, | |
54bf36ed FA |
2245 | .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tpidrurw_s), |
2246 | offsetoflow32(CPUARMState, cp15.tpidrurw_ns) }, | |
e4fe830b PM |
2247 | .resetfn = arm_cp_reset_ignore }, |
2248 | { .name = "TPIDRRO_EL0", .state = ARM_CP_STATE_AA64, | |
2249 | .opc0 = 3, .opc1 = 3, .opc2 = 3, .crn = 13, .crm = 0, | |
2250 | .access = PL0_R|PL1_W, | |
54bf36ed FA |
2251 | .fieldoffset = offsetof(CPUARMState, cp15.tpidrro_el[0]), |
2252 | .resetvalue = 0}, | |
4d31c596 PM |
2253 | { .name = "TPIDRURO", .cp = 15, .crn = 13, .crm = 0, .opc1 = 0, .opc2 = 3, |
2254 | .access = PL0_R|PL1_W, | |
54bf36ed FA |
2255 | .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tpidruro_s), |
2256 | offsetoflow32(CPUARMState, cp15.tpidruro_ns) }, | |
e4fe830b | 2257 | .resetfn = arm_cp_reset_ignore }, |
54bf36ed | 2258 | { .name = "TPIDR_EL1", .state = ARM_CP_STATE_AA64, |
e4fe830b | 2259 | .opc0 = 3, .opc1 = 0, .opc2 = 4, .crn = 13, .crm = 0, |
4d31c596 | 2260 | .access = PL1_RW, |
54bf36ed FA |
2261 | .fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[1]), .resetvalue = 0 }, |
2262 | { .name = "TPIDRPRW", .opc1 = 0, .cp = 15, .crn = 13, .crm = 0, .opc2 = 4, | |
2263 | .access = PL1_RW, | |
2264 | .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tpidrprw_s), | |
2265 | offsetoflow32(CPUARMState, cp15.tpidrprw_ns) }, | |
2266 | .resetvalue = 0 }, | |
4d31c596 PM |
2267 | REGINFO_SENTINEL |
2268 | }; | |
2269 | ||
55d284af PM |
2270 | #ifndef CONFIG_USER_ONLY |
2271 | ||
3f208fd7 PM |
2272 | static CPAccessResult gt_cntfrq_access(CPUARMState *env, const ARMCPRegInfo *ri, |
2273 | bool isread) | |
00108f2d | 2274 | { |
75502672 PM |
2275 | /* CNTFRQ: not visible from PL0 if both PL0PCTEN and PL0VCTEN are zero. |
2276 | * Writable only at the highest implemented exception level. | |
2277 | */ | |
2278 | int el = arm_current_el(env); | |
2279 | ||
2280 | switch (el) { | |
2281 | case 0: | |
2282 | if (!extract32(env->cp15.c14_cntkctl, 0, 2)) { | |
2283 | return CP_ACCESS_TRAP; | |
2284 | } | |
2285 | break; | |
2286 | case 1: | |
2287 | if (!isread && ri->state == ARM_CP_STATE_AA32 && | |
2288 | arm_is_secure_below_el3(env)) { | |
2289 | /* Accesses from 32-bit Secure EL1 UNDEF (*not* trap to EL3!) */ | |
2290 | return CP_ACCESS_TRAP_UNCATEGORIZED; | |
2291 | } | |
2292 | break; | |
2293 | case 2: | |
2294 | case 3: | |
2295 | break; | |
00108f2d | 2296 | } |
75502672 PM |
2297 | |
2298 | if (!isread && el < arm_highest_el(env)) { | |
2299 | return CP_ACCESS_TRAP_UNCATEGORIZED; | |
2300 | } | |
2301 | ||
00108f2d PM |
2302 | return CP_ACCESS_OK; |
2303 | } | |
2304 | ||
3f208fd7 PM |
2305 | static CPAccessResult gt_counter_access(CPUARMState *env, int timeridx, |
2306 | bool isread) | |
00108f2d | 2307 | { |
0b6440af EI |
2308 | unsigned int cur_el = arm_current_el(env); |
2309 | bool secure = arm_is_secure(env); | |
2310 | ||
00108f2d | 2311 | /* CNT[PV]CT: not visible from PL0 if ELO[PV]CTEN is zero */ |
0b6440af | 2312 | if (cur_el == 0 && |
00108f2d PM |
2313 | !extract32(env->cp15.c14_cntkctl, timeridx, 1)) { |
2314 | return CP_ACCESS_TRAP; | |
2315 | } | |
0b6440af EI |
2316 | |
2317 | if (arm_feature(env, ARM_FEATURE_EL2) && | |
2318 | timeridx == GTIMER_PHYS && !secure && cur_el < 2 && | |
2319 | !extract32(env->cp15.cnthctl_el2, 0, 1)) { | |
2320 | return CP_ACCESS_TRAP_EL2; | |
2321 | } | |
00108f2d PM |
2322 | return CP_ACCESS_OK; |
2323 | } | |
2324 | ||
3f208fd7 PM |
2325 | static CPAccessResult gt_timer_access(CPUARMState *env, int timeridx, |
2326 | bool isread) | |
00108f2d | 2327 | { |
0b6440af EI |
2328 | unsigned int cur_el = arm_current_el(env); |
2329 | bool secure = arm_is_secure(env); | |
2330 | ||
00108f2d PM |
2331 | /* CNT[PV]_CVAL, CNT[PV]_CTL, CNT[PV]_TVAL: not visible from PL0 if |
2332 | * EL0[PV]TEN is zero. | |
2333 | */ | |
0b6440af | 2334 | if (cur_el == 0 && |
00108f2d PM |
2335 | !extract32(env->cp15.c14_cntkctl, 9 - timeridx, 1)) { |
2336 | return CP_ACCESS_TRAP; | |
2337 | } | |
0b6440af EI |
2338 | |
2339 | if (arm_feature(env, ARM_FEATURE_EL2) && | |
2340 | timeridx == GTIMER_PHYS && !secure && cur_el < 2 && | |
2341 | !extract32(env->cp15.cnthctl_el2, 1, 1)) { | |
2342 | return CP_ACCESS_TRAP_EL2; | |
2343 | } | |
00108f2d PM |
2344 | return CP_ACCESS_OK; |
2345 | } | |
2346 | ||
2347 | static CPAccessResult gt_pct_access(CPUARMState *env, | |
3f208fd7 PM |
2348 | const ARMCPRegInfo *ri, |
2349 | bool isread) | |
00108f2d | 2350 | { |
3f208fd7 | 2351 | return gt_counter_access(env, GTIMER_PHYS, isread); |
00108f2d PM |
2352 | } |
2353 | ||
2354 | static CPAccessResult gt_vct_access(CPUARMState *env, | |
3f208fd7 PM |
2355 | const ARMCPRegInfo *ri, |
2356 | bool isread) | |
00108f2d | 2357 | { |
3f208fd7 | 2358 | return gt_counter_access(env, GTIMER_VIRT, isread); |
00108f2d PM |
2359 | } |
2360 | ||
3f208fd7 PM |
2361 | static CPAccessResult gt_ptimer_access(CPUARMState *env, const ARMCPRegInfo *ri, |
2362 | bool isread) | |
00108f2d | 2363 | { |
3f208fd7 | 2364 | return gt_timer_access(env, GTIMER_PHYS, isread); |
00108f2d PM |
2365 | } |
2366 | ||
3f208fd7 PM |
2367 | static CPAccessResult gt_vtimer_access(CPUARMState *env, const ARMCPRegInfo *ri, |
2368 | bool isread) | |
00108f2d | 2369 | { |
3f208fd7 | 2370 | return gt_timer_access(env, GTIMER_VIRT, isread); |
00108f2d PM |
2371 | } |
2372 | ||
b4d3978c | 2373 | static CPAccessResult gt_stimer_access(CPUARMState *env, |
3f208fd7 PM |
2374 | const ARMCPRegInfo *ri, |
2375 | bool isread) | |
b4d3978c PM |
2376 | { |
2377 | /* The AArch64 register view of the secure physical timer is | |
2378 | * always accessible from EL3, and configurably accessible from | |
2379 | * Secure EL1. | |
2380 | */ | |
2381 | switch (arm_current_el(env)) { | |
2382 | case 1: | |
2383 | if (!arm_is_secure(env)) { | |
2384 | return CP_ACCESS_TRAP; | |
2385 | } | |
2386 | if (!(env->cp15.scr_el3 & SCR_ST)) { | |
2387 | return CP_ACCESS_TRAP_EL3; | |
2388 | } | |
2389 | return CP_ACCESS_OK; | |
2390 | case 0: | |
2391 | case 2: | |
2392 | return CP_ACCESS_TRAP; | |
2393 | case 3: | |
2394 | return CP_ACCESS_OK; | |
2395 | default: | |
2396 | g_assert_not_reached(); | |
2397 | } | |
2398 | } | |
2399 | ||
55d284af PM |
2400 | static uint64_t gt_get_countervalue(CPUARMState *env) |
2401 | { | |
bc72ad67 | 2402 | return qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / GTIMER_SCALE; |
55d284af PM |
2403 | } |
2404 | ||
2405 | static void gt_recalc_timer(ARMCPU *cpu, int timeridx) | |
2406 | { | |
2407 | ARMGenericTimer *gt = &cpu->env.cp15.c14_timer[timeridx]; | |
2408 | ||
2409 | if (gt->ctl & 1) { | |
2410 | /* Timer enabled: calculate and set current ISTATUS, irq, and | |
2411 | * reset timer to when ISTATUS next has to change | |
2412 | */ | |
edac4d8a EI |
2413 | uint64_t offset = timeridx == GTIMER_VIRT ? |
2414 | cpu->env.cp15.cntvoff_el2 : 0; | |
55d284af PM |
2415 | uint64_t count = gt_get_countervalue(&cpu->env); |
2416 | /* Note that this must be unsigned 64 bit arithmetic: */ | |
edac4d8a | 2417 | int istatus = count - offset >= gt->cval; |
55d284af | 2418 | uint64_t nexttick; |
194cbc49 | 2419 | int irqstate; |
55d284af PM |
2420 | |
2421 | gt->ctl = deposit32(gt->ctl, 2, 1, istatus); | |
194cbc49 PM |
2422 | |
2423 | irqstate = (istatus && !(gt->ctl & 2)); | |
2424 | qemu_set_irq(cpu->gt_timer_outputs[timeridx], irqstate); | |
2425 | ||
55d284af PM |
2426 | if (istatus) { |
2427 | /* Next transition is when count rolls back over to zero */ | |
2428 | nexttick = UINT64_MAX; | |
2429 | } else { | |
2430 | /* Next transition is when we hit cval */ | |
edac4d8a | 2431 | nexttick = gt->cval + offset; |
55d284af PM |
2432 | } |
2433 | /* Note that the desired next expiry time might be beyond the | |
2434 | * signed-64-bit range of a QEMUTimer -- in this case we just | |
2435 | * set the timer for as far in the future as possible. When the | |
2436 | * timer expires we will reset the timer for any remaining period. | |
2437 | */ | |
2438 | if (nexttick > INT64_MAX / GTIMER_SCALE) { | |
2439 | nexttick = INT64_MAX / GTIMER_SCALE; | |
2440 | } | |
bc72ad67 | 2441 | timer_mod(cpu->gt_timer[timeridx], nexttick); |
194cbc49 | 2442 | trace_arm_gt_recalc(timeridx, irqstate, nexttick); |
55d284af PM |
2443 | } else { |
2444 | /* Timer disabled: ISTATUS and timer output always clear */ | |
2445 | gt->ctl &= ~4; | |
2446 | qemu_set_irq(cpu->gt_timer_outputs[timeridx], 0); | |
bc72ad67 | 2447 | timer_del(cpu->gt_timer[timeridx]); |
194cbc49 | 2448 | trace_arm_gt_recalc_disabled(timeridx); |
55d284af PM |
2449 | } |
2450 | } | |
2451 | ||
0e3eca4c EI |
2452 | static void gt_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri, |
2453 | int timeridx) | |
55d284af PM |
2454 | { |
2455 | ARMCPU *cpu = arm_env_get_cpu(env); | |
55d284af | 2456 | |
bc72ad67 | 2457 | timer_del(cpu->gt_timer[timeridx]); |
55d284af PM |
2458 | } |
2459 | ||
c4241c7d | 2460 | static uint64_t gt_cnt_read(CPUARMState *env, const ARMCPRegInfo *ri) |
55d284af | 2461 | { |
c4241c7d | 2462 | return gt_get_countervalue(env); |
55d284af PM |
2463 | } |
2464 | ||
edac4d8a EI |
2465 | static uint64_t gt_virt_cnt_read(CPUARMState *env, const ARMCPRegInfo *ri) |
2466 | { | |
2467 | return gt_get_countervalue(env) - env->cp15.cntvoff_el2; | |
2468 | } | |
2469 | ||
c4241c7d | 2470 | static void gt_cval_write(CPUARMState *env, const ARMCPRegInfo *ri, |
0e3eca4c | 2471 | int timeridx, |
c4241c7d | 2472 | uint64_t value) |
55d284af | 2473 | { |
194cbc49 | 2474 | trace_arm_gt_cval_write(timeridx, value); |
55d284af PM |
2475 | env->cp15.c14_timer[timeridx].cval = value; |
2476 | gt_recalc_timer(arm_env_get_cpu(env), timeridx); | |
55d284af | 2477 | } |
c4241c7d | 2478 | |
0e3eca4c EI |
2479 | static uint64_t gt_tval_read(CPUARMState *env, const ARMCPRegInfo *ri, |
2480 | int timeridx) | |
55d284af | 2481 | { |
edac4d8a | 2482 | uint64_t offset = timeridx == GTIMER_VIRT ? env->cp15.cntvoff_el2 : 0; |
55d284af | 2483 | |
c4241c7d | 2484 | return (uint32_t)(env->cp15.c14_timer[timeridx].cval - |
edac4d8a | 2485 | (gt_get_countervalue(env) - offset)); |
55d284af PM |
2486 | } |
2487 | ||
c4241c7d | 2488 | static void gt_tval_write(CPUARMState *env, const ARMCPRegInfo *ri, |
0e3eca4c | 2489 | int timeridx, |
c4241c7d | 2490 | uint64_t value) |
55d284af | 2491 | { |
edac4d8a | 2492 | uint64_t offset = timeridx == GTIMER_VIRT ? env->cp15.cntvoff_el2 : 0; |
55d284af | 2493 | |
194cbc49 | 2494 | trace_arm_gt_tval_write(timeridx, value); |
edac4d8a | 2495 | env->cp15.c14_timer[timeridx].cval = gt_get_countervalue(env) - offset + |
18084b2f | 2496 | sextract64(value, 0, 32); |
55d284af | 2497 | gt_recalc_timer(arm_env_get_cpu(env), timeridx); |
55d284af PM |
2498 | } |
2499 | ||
c4241c7d | 2500 | static void gt_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri, |
0e3eca4c | 2501 | int timeridx, |
c4241c7d | 2502 | uint64_t value) |
55d284af PM |
2503 | { |
2504 | ARMCPU *cpu = arm_env_get_cpu(env); | |
55d284af PM |
2505 | uint32_t oldval = env->cp15.c14_timer[timeridx].ctl; |
2506 | ||
194cbc49 | 2507 | trace_arm_gt_ctl_write(timeridx, value); |
d3afacc7 | 2508 | env->cp15.c14_timer[timeridx].ctl = deposit64(oldval, 0, 2, value); |
55d284af PM |
2509 | if ((oldval ^ value) & 1) { |
2510 | /* Enable toggled */ | |
2511 | gt_recalc_timer(cpu, timeridx); | |
d3afacc7 | 2512 | } else if ((oldval ^ value) & 2) { |
55d284af PM |
2513 | /* IMASK toggled: don't need to recalculate, |
2514 | * just set the interrupt line based on ISTATUS | |
2515 | */ | |
194cbc49 PM |
2516 | int irqstate = (oldval & 4) && !(value & 2); |
2517 | ||
2518 | trace_arm_gt_imask_toggle(timeridx, irqstate); | |
2519 | qemu_set_irq(cpu->gt_timer_outputs[timeridx], irqstate); | |
55d284af | 2520 | } |
55d284af PM |
2521 | } |
2522 | ||
0e3eca4c EI |
2523 | static void gt_phys_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri) |
2524 | { | |
2525 | gt_timer_reset(env, ri, GTIMER_PHYS); | |
2526 | } | |
2527 | ||
2528 | static void gt_phys_cval_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
2529 | uint64_t value) | |
2530 | { | |
2531 | gt_cval_write(env, ri, GTIMER_PHYS, value); | |
2532 | } | |
2533 | ||
2534 | static uint64_t gt_phys_tval_read(CPUARMState *env, const ARMCPRegInfo *ri) | |
2535 | { | |
2536 | return gt_tval_read(env, ri, GTIMER_PHYS); | |
2537 | } | |
2538 | ||
2539 | static void gt_phys_tval_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
2540 | uint64_t value) | |
2541 | { | |
2542 | gt_tval_write(env, ri, GTIMER_PHYS, value); | |
2543 | } | |
2544 | ||
2545 | static void gt_phys_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
2546 | uint64_t value) | |
2547 | { | |
2548 | gt_ctl_write(env, ri, GTIMER_PHYS, value); | |
2549 | } | |
2550 | ||
2551 | static void gt_virt_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri) | |
2552 | { | |
2553 | gt_timer_reset(env, ri, GTIMER_VIRT); | |
2554 | } | |
2555 | ||
2556 | static void gt_virt_cval_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
2557 | uint64_t value) | |
2558 | { | |
2559 | gt_cval_write(env, ri, GTIMER_VIRT, value); | |
2560 | } | |
2561 | ||
2562 | static uint64_t gt_virt_tval_read(CPUARMState *env, const ARMCPRegInfo *ri) | |
2563 | { | |
2564 | return gt_tval_read(env, ri, GTIMER_VIRT); | |
2565 | } | |
2566 | ||
2567 | static void gt_virt_tval_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
2568 | uint64_t value) | |
2569 | { | |
2570 | gt_tval_write(env, ri, GTIMER_VIRT, value); | |
2571 | } | |
2572 | ||
2573 | static void gt_virt_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
2574 | uint64_t value) | |
2575 | { | |
2576 | gt_ctl_write(env, ri, GTIMER_VIRT, value); | |
2577 | } | |
2578 | ||
edac4d8a EI |
2579 | static void gt_cntvoff_write(CPUARMState *env, const ARMCPRegInfo *ri, |
2580 | uint64_t value) | |
2581 | { | |
2582 | ARMCPU *cpu = arm_env_get_cpu(env); | |
2583 | ||
194cbc49 | 2584 | trace_arm_gt_cntvoff_write(value); |
edac4d8a EI |
2585 | raw_write(env, ri, value); |
2586 | gt_recalc_timer(cpu, GTIMER_VIRT); | |
2587 | } | |
2588 | ||
b0e66d95 EI |
2589 | static void gt_hyp_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri) |
2590 | { | |
2591 | gt_timer_reset(env, ri, GTIMER_HYP); | |
2592 | } | |
2593 | ||
2594 | static void gt_hyp_cval_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
2595 | uint64_t value) | |
2596 | { | |
2597 | gt_cval_write(env, ri, GTIMER_HYP, value); | |
2598 | } | |
2599 | ||
2600 | static uint64_t gt_hyp_tval_read(CPUARMState *env, const ARMCPRegInfo *ri) | |
2601 | { | |
2602 | return gt_tval_read(env, ri, GTIMER_HYP); | |
2603 | } | |
2604 | ||
2605 | static void gt_hyp_tval_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
2606 | uint64_t value) | |
2607 | { | |
2608 | gt_tval_write(env, ri, GTIMER_HYP, value); | |
2609 | } | |
2610 | ||
2611 | static void gt_hyp_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
2612 | uint64_t value) | |
2613 | { | |
2614 | gt_ctl_write(env, ri, GTIMER_HYP, value); | |
2615 | } | |
2616 | ||
b4d3978c PM |
2617 | static void gt_sec_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri) |
2618 | { | |
2619 | gt_timer_reset(env, ri, GTIMER_SEC); | |
2620 | } | |
2621 | ||
2622 | static void gt_sec_cval_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
2623 | uint64_t value) | |
2624 | { | |
2625 | gt_cval_write(env, ri, GTIMER_SEC, value); | |
2626 | } | |
2627 | ||
2628 | static uint64_t gt_sec_tval_read(CPUARMState *env, const ARMCPRegInfo *ri) | |
2629 | { | |
2630 | return gt_tval_read(env, ri, GTIMER_SEC); | |
2631 | } | |
2632 | ||
2633 | static void gt_sec_tval_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
2634 | uint64_t value) | |
2635 | { | |
2636 | gt_tval_write(env, ri, GTIMER_SEC, value); | |
2637 | } | |
2638 | ||
2639 | static void gt_sec_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
2640 | uint64_t value) | |
2641 | { | |
2642 | gt_ctl_write(env, ri, GTIMER_SEC, value); | |
2643 | } | |
2644 | ||
55d284af PM |
2645 | void arm_gt_ptimer_cb(void *opaque) |
2646 | { | |
2647 | ARMCPU *cpu = opaque; | |
2648 | ||
2649 | gt_recalc_timer(cpu, GTIMER_PHYS); | |
2650 | } | |
2651 | ||
2652 | void arm_gt_vtimer_cb(void *opaque) | |
2653 | { | |
2654 | ARMCPU *cpu = opaque; | |
2655 | ||
2656 | gt_recalc_timer(cpu, GTIMER_VIRT); | |
2657 | } | |
2658 | ||
b0e66d95 EI |
2659 | void arm_gt_htimer_cb(void *opaque) |
2660 | { | |
2661 | ARMCPU *cpu = opaque; | |
2662 | ||
2663 | gt_recalc_timer(cpu, GTIMER_HYP); | |
2664 | } | |
2665 | ||
b4d3978c PM |
2666 | void arm_gt_stimer_cb(void *opaque) |
2667 | { | |
2668 | ARMCPU *cpu = opaque; | |
2669 | ||
2670 | gt_recalc_timer(cpu, GTIMER_SEC); | |
2671 | } | |
2672 | ||
55d284af PM |
2673 | static const ARMCPRegInfo generic_timer_cp_reginfo[] = { |
2674 | /* Note that CNTFRQ is purely reads-as-written for the benefit | |
2675 | * of software; writing it doesn't actually change the timer frequency. | |
2676 | * Our reset value matches the fixed frequency we implement the timer at. | |
2677 | */ | |
2678 | { .name = "CNTFRQ", .cp = 15, .crn = 14, .crm = 0, .opc1 = 0, .opc2 = 0, | |
7a0e58fa | 2679 | .type = ARM_CP_ALIAS, |
a7adc4b7 PM |
2680 | .access = PL1_RW | PL0_R, .accessfn = gt_cntfrq_access, |
2681 | .fieldoffset = offsetoflow32(CPUARMState, cp15.c14_cntfrq), | |
a7adc4b7 PM |
2682 | }, |
2683 | { .name = "CNTFRQ_EL0", .state = ARM_CP_STATE_AA64, | |
2684 | .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 0, | |
2685 | .access = PL1_RW | PL0_R, .accessfn = gt_cntfrq_access, | |
55d284af PM |
2686 | .fieldoffset = offsetof(CPUARMState, cp15.c14_cntfrq), |
2687 | .resetvalue = (1000 * 1000 * 1000) / GTIMER_SCALE, | |
55d284af PM |
2688 | }, |
2689 | /* overall control: mostly access permissions */ | |
a7adc4b7 PM |
2690 | { .name = "CNTKCTL", .state = ARM_CP_STATE_BOTH, |
2691 | .opc0 = 3, .opc1 = 0, .crn = 14, .crm = 1, .opc2 = 0, | |
55d284af PM |
2692 | .access = PL1_RW, |
2693 | .fieldoffset = offsetof(CPUARMState, cp15.c14_cntkctl), | |
2694 | .resetvalue = 0, | |
2695 | }, | |
2696 | /* per-timer control */ | |
2697 | { .name = "CNTP_CTL", .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 1, | |
9ff9dd3c | 2698 | .secure = ARM_CP_SECSTATE_NS, |
daf1dc5f | 2699 | .type = ARM_CP_IO | ARM_CP_ALIAS, .access = PL0_RW, |
a7adc4b7 PM |
2700 | .accessfn = gt_ptimer_access, |
2701 | .fieldoffset = offsetoflow32(CPUARMState, | |
2702 | cp15.c14_timer[GTIMER_PHYS].ctl), | |
0e3eca4c | 2703 | .writefn = gt_phys_ctl_write, .raw_writefn = raw_write, |
a7adc4b7 | 2704 | }, |
9c513e78 | 2705 | { .name = "CNTP_CTL_S", |
9ff9dd3c PM |
2706 | .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 1, |
2707 | .secure = ARM_CP_SECSTATE_S, | |
daf1dc5f | 2708 | .type = ARM_CP_IO | ARM_CP_ALIAS, .access = PL0_RW, |
9ff9dd3c PM |
2709 | .accessfn = gt_ptimer_access, |
2710 | .fieldoffset = offsetoflow32(CPUARMState, | |
2711 | cp15.c14_timer[GTIMER_SEC].ctl), | |
2712 | .writefn = gt_sec_ctl_write, .raw_writefn = raw_write, | |
2713 | }, | |
a7adc4b7 PM |
2714 | { .name = "CNTP_CTL_EL0", .state = ARM_CP_STATE_AA64, |
2715 | .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 2, .opc2 = 1, | |
daf1dc5f | 2716 | .type = ARM_CP_IO, .access = PL0_RW, |
a7adc4b7 | 2717 | .accessfn = gt_ptimer_access, |
55d284af PM |
2718 | .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_PHYS].ctl), |
2719 | .resetvalue = 0, | |
0e3eca4c | 2720 | .writefn = gt_phys_ctl_write, .raw_writefn = raw_write, |
55d284af PM |
2721 | }, |
2722 | { .name = "CNTV_CTL", .cp = 15, .crn = 14, .crm = 3, .opc1 = 0, .opc2 = 1, | |
daf1dc5f | 2723 | .type = ARM_CP_IO | ARM_CP_ALIAS, .access = PL0_RW, |
a7adc4b7 PM |
2724 | .accessfn = gt_vtimer_access, |
2725 | .fieldoffset = offsetoflow32(CPUARMState, | |
2726 | cp15.c14_timer[GTIMER_VIRT].ctl), | |
0e3eca4c | 2727 | .writefn = gt_virt_ctl_write, .raw_writefn = raw_write, |
a7adc4b7 PM |
2728 | }, |
2729 | { .name = "CNTV_CTL_EL0", .state = ARM_CP_STATE_AA64, | |
2730 | .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 3, .opc2 = 1, | |
daf1dc5f | 2731 | .type = ARM_CP_IO, .access = PL0_RW, |
a7adc4b7 | 2732 | .accessfn = gt_vtimer_access, |
55d284af PM |
2733 | .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_VIRT].ctl), |
2734 | .resetvalue = 0, | |
0e3eca4c | 2735 | .writefn = gt_virt_ctl_write, .raw_writefn = raw_write, |
55d284af PM |
2736 | }, |
2737 | /* TimerValue views: a 32 bit downcounting view of the underlying state */ | |
2738 | { .name = "CNTP_TVAL", .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 0, | |
9ff9dd3c | 2739 | .secure = ARM_CP_SECSTATE_NS, |
daf1dc5f | 2740 | .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL0_RW, |
00108f2d | 2741 | .accessfn = gt_ptimer_access, |
0e3eca4c | 2742 | .readfn = gt_phys_tval_read, .writefn = gt_phys_tval_write, |
55d284af | 2743 | }, |
9c513e78 | 2744 | { .name = "CNTP_TVAL_S", |
9ff9dd3c PM |
2745 | .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 0, |
2746 | .secure = ARM_CP_SECSTATE_S, | |
daf1dc5f | 2747 | .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL0_RW, |
9ff9dd3c PM |
2748 | .accessfn = gt_ptimer_access, |
2749 | .readfn = gt_sec_tval_read, .writefn = gt_sec_tval_write, | |
2750 | }, | |
a7adc4b7 PM |
2751 | { .name = "CNTP_TVAL_EL0", .state = ARM_CP_STATE_AA64, |
2752 | .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 2, .opc2 = 0, | |
daf1dc5f | 2753 | .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL0_RW, |
0e3eca4c EI |
2754 | .accessfn = gt_ptimer_access, .resetfn = gt_phys_timer_reset, |
2755 | .readfn = gt_phys_tval_read, .writefn = gt_phys_tval_write, | |
a7adc4b7 | 2756 | }, |
55d284af | 2757 | { .name = "CNTV_TVAL", .cp = 15, .crn = 14, .crm = 3, .opc1 = 0, .opc2 = 0, |
daf1dc5f | 2758 | .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL0_RW, |
00108f2d | 2759 | .accessfn = gt_vtimer_access, |
0e3eca4c | 2760 | .readfn = gt_virt_tval_read, .writefn = gt_virt_tval_write, |
55d284af | 2761 | }, |
a7adc4b7 PM |
2762 | { .name = "CNTV_TVAL_EL0", .state = ARM_CP_STATE_AA64, |
2763 | .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 3, .opc2 = 0, | |
daf1dc5f | 2764 | .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL0_RW, |
0e3eca4c EI |
2765 | .accessfn = gt_vtimer_access, .resetfn = gt_virt_timer_reset, |
2766 | .readfn = gt_virt_tval_read, .writefn = gt_virt_tval_write, | |
a7adc4b7 | 2767 | }, |
55d284af PM |
2768 | /* The counter itself */ |
2769 | { .name = "CNTPCT", .cp = 15, .crm = 14, .opc1 = 0, | |
7a0e58fa | 2770 | .access = PL0_R, .type = ARM_CP_64BIT | ARM_CP_NO_RAW | ARM_CP_IO, |
00108f2d | 2771 | .accessfn = gt_pct_access, |
a7adc4b7 PM |
2772 | .readfn = gt_cnt_read, .resetfn = arm_cp_reset_ignore, |
2773 | }, | |
2774 | { .name = "CNTPCT_EL0", .state = ARM_CP_STATE_AA64, | |
2775 | .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 1, | |
7a0e58fa | 2776 | .access = PL0_R, .type = ARM_CP_NO_RAW | ARM_CP_IO, |
d57b9ee8 | 2777 | .accessfn = gt_pct_access, .readfn = gt_cnt_read, |
55d284af PM |
2778 | }, |
2779 | { .name = "CNTVCT", .cp = 15, .crm = 14, .opc1 = 1, | |
7a0e58fa | 2780 | .access = PL0_R, .type = ARM_CP_64BIT | ARM_CP_NO_RAW | ARM_CP_IO, |
00108f2d | 2781 | .accessfn = gt_vct_access, |
edac4d8a | 2782 | .readfn = gt_virt_cnt_read, .resetfn = arm_cp_reset_ignore, |
a7adc4b7 PM |
2783 | }, |
2784 | { .name = "CNTVCT_EL0", .state = ARM_CP_STATE_AA64, | |
2785 | .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 2, | |
7a0e58fa | 2786 | .access = PL0_R, .type = ARM_CP_NO_RAW | ARM_CP_IO, |
d57b9ee8 | 2787 | .accessfn = gt_vct_access, .readfn = gt_virt_cnt_read, |
55d284af PM |
2788 | }, |
2789 | /* Comparison value, indicating when the timer goes off */ | |
2790 | { .name = "CNTP_CVAL", .cp = 15, .crm = 14, .opc1 = 2, | |
9ff9dd3c | 2791 | .secure = ARM_CP_SECSTATE_NS, |
daf1dc5f | 2792 | .access = PL0_RW, |
7a0e58fa | 2793 | .type = ARM_CP_64BIT | ARM_CP_IO | ARM_CP_ALIAS, |
55d284af | 2794 | .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_PHYS].cval), |
b061a82b | 2795 | .accessfn = gt_ptimer_access, |
0e3eca4c | 2796 | .writefn = gt_phys_cval_write, .raw_writefn = raw_write, |
a7adc4b7 | 2797 | }, |
9c513e78 | 2798 | { .name = "CNTP_CVAL_S", .cp = 15, .crm = 14, .opc1 = 2, |
9ff9dd3c | 2799 | .secure = ARM_CP_SECSTATE_S, |
daf1dc5f | 2800 | .access = PL0_RW, |
9ff9dd3c PM |
2801 | .type = ARM_CP_64BIT | ARM_CP_IO | ARM_CP_ALIAS, |
2802 | .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_SEC].cval), | |
2803 | .accessfn = gt_ptimer_access, | |
2804 | .writefn = gt_sec_cval_write, .raw_writefn = raw_write, | |
2805 | }, | |
a7adc4b7 PM |
2806 | { .name = "CNTP_CVAL_EL0", .state = ARM_CP_STATE_AA64, |
2807 | .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 2, .opc2 = 2, | |
daf1dc5f | 2808 | .access = PL0_RW, |
a7adc4b7 PM |
2809 | .type = ARM_CP_IO, |
2810 | .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_PHYS].cval), | |
12cde08a | 2811 | .resetvalue = 0, .accessfn = gt_ptimer_access, |
0e3eca4c | 2812 | .writefn = gt_phys_cval_write, .raw_writefn = raw_write, |
55d284af PM |
2813 | }, |
2814 | { .name = "CNTV_CVAL", .cp = 15, .crm = 14, .opc1 = 3, | |
daf1dc5f | 2815 | .access = PL0_RW, |
7a0e58fa | 2816 | .type = ARM_CP_64BIT | ARM_CP_IO | ARM_CP_ALIAS, |
55d284af | 2817 | .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_VIRT].cval), |
b061a82b | 2818 | .accessfn = gt_vtimer_access, |
0e3eca4c | 2819 | .writefn = gt_virt_cval_write, .raw_writefn = raw_write, |
a7adc4b7 PM |
2820 | }, |
2821 | { .name = "CNTV_CVAL_EL0", .state = ARM_CP_STATE_AA64, | |
2822 | .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 3, .opc2 = 2, | |
daf1dc5f | 2823 | .access = PL0_RW, |
a7adc4b7 PM |
2824 | .type = ARM_CP_IO, |
2825 | .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_VIRT].cval), | |
2826 | .resetvalue = 0, .accessfn = gt_vtimer_access, | |
0e3eca4c | 2827 | .writefn = gt_virt_cval_write, .raw_writefn = raw_write, |
55d284af | 2828 | }, |
b4d3978c PM |
2829 | /* Secure timer -- this is actually restricted to only EL3 |
2830 | * and configurably Secure-EL1 via the accessfn. | |
2831 | */ | |
2832 | { .name = "CNTPS_TVAL_EL1", .state = ARM_CP_STATE_AA64, | |
2833 | .opc0 = 3, .opc1 = 7, .crn = 14, .crm = 2, .opc2 = 0, | |
2834 | .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW, | |
2835 | .accessfn = gt_stimer_access, | |
2836 | .readfn = gt_sec_tval_read, | |
2837 | .writefn = gt_sec_tval_write, | |
2838 | .resetfn = gt_sec_timer_reset, | |
2839 | }, | |
2840 | { .name = "CNTPS_CTL_EL1", .state = ARM_CP_STATE_AA64, | |
2841 | .opc0 = 3, .opc1 = 7, .crn = 14, .crm = 2, .opc2 = 1, | |
2842 | .type = ARM_CP_IO, .access = PL1_RW, | |
2843 | .accessfn = gt_stimer_access, | |
2844 | .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_SEC].ctl), | |
2845 | .resetvalue = 0, | |
2846 | .writefn = gt_sec_ctl_write, .raw_writefn = raw_write, | |
2847 | }, | |
2848 | { .name = "CNTPS_CVAL_EL1", .state = ARM_CP_STATE_AA64, | |
2849 | .opc0 = 3, .opc1 = 7, .crn = 14, .crm = 2, .opc2 = 2, | |
2850 | .type = ARM_CP_IO, .access = PL1_RW, | |
2851 | .accessfn = gt_stimer_access, | |
2852 | .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_SEC].cval), | |
2853 | .writefn = gt_sec_cval_write, .raw_writefn = raw_write, | |
2854 | }, | |
55d284af PM |
2855 | REGINFO_SENTINEL |
2856 | }; | |
2857 | ||
2858 | #else | |
26c4a83b AB |
2859 | |
2860 | /* In user-mode most of the generic timer registers are inaccessible | |
2861 | * however modern kernels (4.12+) allow access to cntvct_el0 | |
55d284af | 2862 | */ |
26c4a83b AB |
2863 | |
2864 | static uint64_t gt_virt_cnt_read(CPUARMState *env, const ARMCPRegInfo *ri) | |
2865 | { | |
2866 | /* Currently we have no support for QEMUTimer in linux-user so we | |
2867 | * can't call gt_get_countervalue(env), instead we directly | |
2868 | * call the lower level functions. | |
2869 | */ | |
2870 | return cpu_get_clock() / GTIMER_SCALE; | |
2871 | } | |
2872 | ||
6cc7a3ae | 2873 | static const ARMCPRegInfo generic_timer_cp_reginfo[] = { |
26c4a83b AB |
2874 | { .name = "CNTFRQ_EL0", .state = ARM_CP_STATE_AA64, |
2875 | .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 0, | |
2876 | .type = ARM_CP_CONST, .access = PL0_R /* no PL1_RW in linux-user */, | |
2877 | .fieldoffset = offsetof(CPUARMState, cp15.c14_cntfrq), | |
2878 | .resetvalue = NANOSECONDS_PER_SECOND / GTIMER_SCALE, | |
2879 | }, | |
2880 | { .name = "CNTVCT_EL0", .state = ARM_CP_STATE_AA64, | |
2881 | .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 2, | |
2882 | .access = PL0_R, .type = ARM_CP_NO_RAW | ARM_CP_IO, | |
2883 | .readfn = gt_virt_cnt_read, | |
2884 | }, | |
6cc7a3ae PM |
2885 | REGINFO_SENTINEL |
2886 | }; | |
2887 | ||
55d284af PM |
2888 | #endif |
2889 | ||
c4241c7d | 2890 | static void par_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) |
4a501606 | 2891 | { |
891a2fe7 | 2892 | if (arm_feature(env, ARM_FEATURE_LPAE)) { |
8d5c773e | 2893 | raw_write(env, ri, value); |
891a2fe7 | 2894 | } else if (arm_feature(env, ARM_FEATURE_V7)) { |
8d5c773e | 2895 | raw_write(env, ri, value & 0xfffff6ff); |
4a501606 | 2896 | } else { |
8d5c773e | 2897 | raw_write(env, ri, value & 0xfffff1ff); |
4a501606 | 2898 | } |
4a501606 PM |
2899 | } |
2900 | ||
2901 | #ifndef CONFIG_USER_ONLY | |
2902 | /* get_phys_addr() isn't present for user-mode-only targets */ | |
702a9357 | 2903 | |
3f208fd7 PM |
2904 | static CPAccessResult ats_access(CPUARMState *env, const ARMCPRegInfo *ri, |
2905 | bool isread) | |
92611c00 PM |
2906 | { |
2907 | if (ri->opc2 & 4) { | |
87562e4f PM |
2908 | /* The ATS12NSO* operations must trap to EL3 if executed in |
2909 | * Secure EL1 (which can only happen if EL3 is AArch64). | |
2910 | * They are simply UNDEF if executed from NS EL1. | |
2911 | * They function normally from EL2 or EL3. | |
92611c00 | 2912 | */ |
87562e4f PM |
2913 | if (arm_current_el(env) == 1) { |
2914 | if (arm_is_secure_below_el3(env)) { | |
2915 | return CP_ACCESS_TRAP_UNCATEGORIZED_EL3; | |
2916 | } | |
2917 | return CP_ACCESS_TRAP_UNCATEGORIZED; | |
2918 | } | |
92611c00 PM |
2919 | } |
2920 | return CP_ACCESS_OK; | |
2921 | } | |
2922 | ||
060e8a48 | 2923 | static uint64_t do_ats_write(CPUARMState *env, uint64_t value, |
03ae85f8 | 2924 | MMUAccessType access_type, ARMMMUIdx mmu_idx) |
4a501606 | 2925 | { |
a8170e5e | 2926 | hwaddr phys_addr; |
4a501606 PM |
2927 | target_ulong page_size; |
2928 | int prot; | |
b7cc4e82 | 2929 | bool ret; |
01c097f7 | 2930 | uint64_t par64; |
1313e2d7 | 2931 | bool format64 = false; |
8bf5b6a9 | 2932 | MemTxAttrs attrs = {}; |
e14b5a23 | 2933 | ARMMMUFaultInfo fi = {}; |
5b2d261d | 2934 | ARMCacheAttrs cacheattrs = {}; |
4a501606 | 2935 | |
5b2d261d | 2936 | ret = get_phys_addr(env, value, access_type, mmu_idx, &phys_addr, &attrs, |
bc52bfeb | 2937 | &prot, &page_size, &fi, &cacheattrs); |
1313e2d7 EI |
2938 | |
2939 | if (is_a64(env)) { | |
2940 | format64 = true; | |
2941 | } else if (arm_feature(env, ARM_FEATURE_LPAE)) { | |
2942 | /* | |
2943 | * ATS1Cxx: | |
2944 | * * TTBCR.EAE determines whether the result is returned using the | |
2945 | * 32-bit or the 64-bit PAR format | |
2946 | * * Instructions executed in Hyp mode always use the 64bit format | |
2947 | * | |
2948 | * ATS1S2NSOxx uses the 64bit format if any of the following is true: | |
2949 | * * The Non-secure TTBCR.EAE bit is set to 1 | |
2950 | * * The implementation includes EL2, and the value of HCR.VM is 1 | |
2951 | * | |
9d1bab33 PM |
2952 | * (Note that HCR.DC makes HCR.VM behave as if it is 1.) |
2953 | * | |
23463e0e | 2954 | * ATS1Hx always uses the 64bit format. |
1313e2d7 EI |
2955 | */ |
2956 | format64 = arm_s1_regime_using_lpae_format(env, mmu_idx); | |
2957 | ||
2958 | if (arm_feature(env, ARM_FEATURE_EL2)) { | |
2959 | if (mmu_idx == ARMMMUIdx_S12NSE0 || mmu_idx == ARMMMUIdx_S12NSE1) { | |
9d1bab33 | 2960 | format64 |= env->cp15.hcr_el2 & (HCR_VM | HCR_DC); |
1313e2d7 EI |
2961 | } else { |
2962 | format64 |= arm_current_el(env) == 2; | |
2963 | } | |
2964 | } | |
2965 | } | |
2966 | ||
2967 | if (format64) { | |
5efe9ed4 | 2968 | /* Create a 64-bit PAR */ |
01c097f7 | 2969 | par64 = (1 << 11); /* LPAE bit always set */ |
b7cc4e82 | 2970 | if (!ret) { |
702a9357 | 2971 | par64 |= phys_addr & ~0xfffULL; |
8bf5b6a9 PM |
2972 | if (!attrs.secure) { |
2973 | par64 |= (1 << 9); /* NS */ | |
2974 | } | |
5b2d261d AB |
2975 | par64 |= (uint64_t)cacheattrs.attrs << 56; /* ATTR */ |
2976 | par64 |= cacheattrs.shareability << 7; /* SH */ | |
4a501606 | 2977 | } else { |
5efe9ed4 PM |
2978 | uint32_t fsr = arm_fi_to_lfsc(&fi); |
2979 | ||
702a9357 | 2980 | par64 |= 1; /* F */ |
b7cc4e82 | 2981 | par64 |= (fsr & 0x3f) << 1; /* FS */ |
0f7b791b PM |
2982 | if (fi.stage2) { |
2983 | par64 |= (1 << 9); /* S */ | |
2984 | } | |
2985 | if (fi.s1ptw) { | |
2986 | par64 |= (1 << 8); /* PTW */ | |
2987 | } | |
4a501606 PM |
2988 | } |
2989 | } else { | |
b7cc4e82 | 2990 | /* fsr is a DFSR/IFSR value for the short descriptor |
702a9357 PM |
2991 | * translation table format (with WnR always clear). |
2992 | * Convert it to a 32-bit PAR. | |
2993 | */ | |
b7cc4e82 | 2994 | if (!ret) { |
702a9357 PM |
2995 | /* We do not set any attribute bits in the PAR */ |
2996 | if (page_size == (1 << 24) | |
2997 | && arm_feature(env, ARM_FEATURE_V7)) { | |
01c097f7 | 2998 | par64 = (phys_addr & 0xff000000) | (1 << 1); |
702a9357 | 2999 | } else { |
01c097f7 | 3000 | par64 = phys_addr & 0xfffff000; |
702a9357 | 3001 | } |
8bf5b6a9 PM |
3002 | if (!attrs.secure) { |
3003 | par64 |= (1 << 9); /* NS */ | |
3004 | } | |
702a9357 | 3005 | } else { |
5efe9ed4 PM |
3006 | uint32_t fsr = arm_fi_to_sfsc(&fi); |
3007 | ||
b7cc4e82 PC |
3008 | par64 = ((fsr & (1 << 10)) >> 5) | ((fsr & (1 << 12)) >> 6) | |
3009 | ((fsr & 0xf) << 1) | 1; | |
702a9357 | 3010 | } |
4a501606 | 3011 | } |
060e8a48 PM |
3012 | return par64; |
3013 | } | |
3014 | ||
3015 | static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) | |
3016 | { | |
03ae85f8 | 3017 | MMUAccessType access_type = ri->opc2 & 1 ? MMU_DATA_STORE : MMU_DATA_LOAD; |
060e8a48 | 3018 | uint64_t par64; |
d3649702 PM |
3019 | ARMMMUIdx mmu_idx; |
3020 | int el = arm_current_el(env); | |
3021 | bool secure = arm_is_secure_below_el3(env); | |
060e8a48 | 3022 | |
d3649702 PM |
3023 | switch (ri->opc2 & 6) { |
3024 | case 0: | |
3025 | /* stage 1 current state PL1: ATS1CPR, ATS1CPW */ | |
3026 | switch (el) { | |
3027 | case 3: | |
3028 | mmu_idx = ARMMMUIdx_S1E3; | |
3029 | break; | |
3030 | case 2: | |
3031 | mmu_idx = ARMMMUIdx_S1NSE1; | |
3032 | break; | |
3033 | case 1: | |
3034 | mmu_idx = secure ? ARMMMUIdx_S1SE1 : ARMMMUIdx_S1NSE1; | |
3035 | break; | |
3036 | default: | |
3037 | g_assert_not_reached(); | |
3038 | } | |
3039 | break; | |
3040 | case 2: | |
3041 | /* stage 1 current state PL0: ATS1CUR, ATS1CUW */ | |
3042 | switch (el) { | |
3043 | case 3: | |
3044 | mmu_idx = ARMMMUIdx_S1SE0; | |
3045 | break; | |
3046 | case 2: | |
3047 | mmu_idx = ARMMMUIdx_S1NSE0; | |
3048 | break; | |
3049 | case 1: | |
3050 | mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S1NSE0; | |
3051 | break; | |
3052 | default: | |
3053 | g_assert_not_reached(); | |
3054 | } | |
3055 | break; | |
3056 | case 4: | |
3057 | /* stage 1+2 NonSecure PL1: ATS12NSOPR, ATS12NSOPW */ | |
3058 | mmu_idx = ARMMMUIdx_S12NSE1; | |
3059 | break; | |
3060 | case 6: | |
3061 | /* stage 1+2 NonSecure PL0: ATS12NSOUR, ATS12NSOUW */ | |
3062 | mmu_idx = ARMMMUIdx_S12NSE0; | |
3063 | break; | |
3064 | default: | |
3065 | g_assert_not_reached(); | |
3066 | } | |
3067 | ||
3068 | par64 = do_ats_write(env, value, access_type, mmu_idx); | |
01c097f7 FA |
3069 | |
3070 | A32_BANKED_CURRENT_REG_SET(env, par, par64); | |
4a501606 | 3071 | } |
060e8a48 | 3072 | |
14db7fe0 PM |
3073 | static void ats1h_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3074 | uint64_t value) | |
3075 | { | |
03ae85f8 | 3076 | MMUAccessType access_type = ri->opc2 & 1 ? MMU_DATA_STORE : MMU_DATA_LOAD; |
14db7fe0 PM |
3077 | uint64_t par64; |
3078 | ||
23463e0e | 3079 | par64 = do_ats_write(env, value, access_type, ARMMMUIdx_S1E2); |
14db7fe0 PM |
3080 | |
3081 | A32_BANKED_CURRENT_REG_SET(env, par, par64); | |
3082 | } | |
3083 | ||
3f208fd7 PM |
3084 | static CPAccessResult at_s1e2_access(CPUARMState *env, const ARMCPRegInfo *ri, |
3085 | bool isread) | |
2a47df95 PM |
3086 | { |
3087 | if (arm_current_el(env) == 3 && !(env->cp15.scr_el3 & SCR_NS)) { | |
3088 | return CP_ACCESS_TRAP; | |
3089 | } | |
3090 | return CP_ACCESS_OK; | |
3091 | } | |
3092 | ||
060e8a48 PM |
3093 | static void ats_write64(CPUARMState *env, const ARMCPRegInfo *ri, |
3094 | uint64_t value) | |
3095 | { | |
03ae85f8 | 3096 | MMUAccessType access_type = ri->opc2 & 1 ? MMU_DATA_STORE : MMU_DATA_LOAD; |
d3649702 PM |
3097 | ARMMMUIdx mmu_idx; |
3098 | int secure = arm_is_secure_below_el3(env); | |
3099 | ||
3100 | switch (ri->opc2 & 6) { | |
3101 | case 0: | |
3102 | switch (ri->opc1) { | |
3103 | case 0: /* AT S1E1R, AT S1E1W */ | |
3104 | mmu_idx = secure ? ARMMMUIdx_S1SE1 : ARMMMUIdx_S1NSE1; | |
3105 | break; | |
3106 | case 4: /* AT S1E2R, AT S1E2W */ | |
3107 | mmu_idx = ARMMMUIdx_S1E2; | |
3108 | break; | |
3109 | case 6: /* AT S1E3R, AT S1E3W */ | |
3110 | mmu_idx = ARMMMUIdx_S1E3; | |
3111 | break; | |
3112 | default: | |
3113 | g_assert_not_reached(); | |
3114 | } | |
3115 | break; | |
3116 | case 2: /* AT S1E0R, AT S1E0W */ | |
3117 | mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S1NSE0; | |
3118 | break; | |
3119 | case 4: /* AT S12E1R, AT S12E1W */ | |
2a47df95 | 3120 | mmu_idx = secure ? ARMMMUIdx_S1SE1 : ARMMMUIdx_S12NSE1; |
d3649702 PM |
3121 | break; |
3122 | case 6: /* AT S12E0R, AT S12E0W */ | |
2a47df95 | 3123 | mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S12NSE0; |
d3649702 PM |
3124 | break; |
3125 | default: | |
3126 | g_assert_not_reached(); | |
3127 | } | |
060e8a48 | 3128 | |
d3649702 | 3129 | env->cp15.par_el[1] = do_ats_write(env, value, access_type, mmu_idx); |
060e8a48 | 3130 | } |
4a501606 PM |
3131 | #endif |
3132 | ||
3133 | static const ARMCPRegInfo vapa_cp_reginfo[] = { | |
3134 | { .name = "PAR", .cp = 15, .crn = 7, .crm = 4, .opc1 = 0, .opc2 = 0, | |
3135 | .access = PL1_RW, .resetvalue = 0, | |
01c097f7 FA |
3136 | .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.par_s), |
3137 | offsetoflow32(CPUARMState, cp15.par_ns) }, | |
4a501606 PM |
3138 | .writefn = par_write }, |
3139 | #ifndef CONFIG_USER_ONLY | |
87562e4f | 3140 | /* This underdecoding is safe because the reginfo is NO_RAW. */ |
4a501606 | 3141 | { .name = "ATS", .cp = 15, .crn = 7, .crm = 8, .opc1 = 0, .opc2 = CP_ANY, |
92611c00 | 3142 | .access = PL1_W, .accessfn = ats_access, |
7a0e58fa | 3143 | .writefn = ats_write, .type = ARM_CP_NO_RAW }, |
4a501606 PM |
3144 | #endif |
3145 | REGINFO_SENTINEL | |
3146 | }; | |
3147 | ||
18032bec PM |
3148 | /* Return basic MPU access permission bits. */ |
3149 | static uint32_t simple_mpu_ap_bits(uint32_t val) | |
3150 | { | |
3151 | uint32_t ret; | |
3152 | uint32_t mask; | |
3153 | int i; | |
3154 | ret = 0; | |
3155 | mask = 3; | |
3156 | for (i = 0; i < 16; i += 2) { | |
3157 | ret |= (val >> i) & mask; | |
3158 | mask <<= 2; | |
3159 | } | |
3160 | return ret; | |
3161 | } | |
3162 | ||
3163 | /* Pad basic MPU access permission bits to extended format. */ | |
3164 | static uint32_t extended_mpu_ap_bits(uint32_t val) | |
3165 | { | |
3166 | uint32_t ret; | |
3167 | uint32_t mask; | |
3168 | int i; | |
3169 | ret = 0; | |
3170 | mask = 3; | |
3171 | for (i = 0; i < 16; i += 2) { | |
3172 | ret |= (val & mask) << i; | |
3173 | mask <<= 2; | |
3174 | } | |
3175 | return ret; | |
3176 | } | |
3177 | ||
c4241c7d PM |
3178 | static void pmsav5_data_ap_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3179 | uint64_t value) | |
18032bec | 3180 | { |
7e09797c | 3181 | env->cp15.pmsav5_data_ap = extended_mpu_ap_bits(value); |
18032bec PM |
3182 | } |
3183 | ||
c4241c7d | 3184 | static uint64_t pmsav5_data_ap_read(CPUARMState *env, const ARMCPRegInfo *ri) |
18032bec | 3185 | { |
7e09797c | 3186 | return simple_mpu_ap_bits(env->cp15.pmsav5_data_ap); |
18032bec PM |
3187 | } |
3188 | ||
c4241c7d PM |
3189 | static void pmsav5_insn_ap_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3190 | uint64_t value) | |
18032bec | 3191 | { |
7e09797c | 3192 | env->cp15.pmsav5_insn_ap = extended_mpu_ap_bits(value); |
18032bec PM |
3193 | } |
3194 | ||
c4241c7d | 3195 | static uint64_t pmsav5_insn_ap_read(CPUARMState *env, const ARMCPRegInfo *ri) |
18032bec | 3196 | { |
7e09797c | 3197 | return simple_mpu_ap_bits(env->cp15.pmsav5_insn_ap); |
18032bec PM |
3198 | } |
3199 | ||
6cb0b013 PC |
3200 | static uint64_t pmsav7_read(CPUARMState *env, const ARMCPRegInfo *ri) |
3201 | { | |
3202 | uint32_t *u32p = *(uint32_t **)raw_ptr(env, ri); | |
3203 | ||
3204 | if (!u32p) { | |
3205 | return 0; | |
3206 | } | |
3207 | ||
1bc04a88 | 3208 | u32p += env->pmsav7.rnr[M_REG_NS]; |
6cb0b013 PC |
3209 | return *u32p; |
3210 | } | |
3211 | ||
3212 | static void pmsav7_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
3213 | uint64_t value) | |
3214 | { | |
3215 | ARMCPU *cpu = arm_env_get_cpu(env); | |
3216 | uint32_t *u32p = *(uint32_t **)raw_ptr(env, ri); | |
3217 | ||
3218 | if (!u32p) { | |
3219 | return; | |
3220 | } | |
3221 | ||
1bc04a88 | 3222 | u32p += env->pmsav7.rnr[M_REG_NS]; |
d10eb08f | 3223 | tlb_flush(CPU(cpu)); /* Mappings may have changed - purge! */ |
6cb0b013 PC |
3224 | *u32p = value; |
3225 | } | |
3226 | ||
6cb0b013 PC |
3227 | static void pmsav7_rgnr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3228 | uint64_t value) | |
3229 | { | |
3230 | ARMCPU *cpu = arm_env_get_cpu(env); | |
3231 | uint32_t nrgs = cpu->pmsav7_dregion; | |
3232 | ||
3233 | if (value >= nrgs) { | |
3234 | qemu_log_mask(LOG_GUEST_ERROR, | |
3235 | "PMSAv7 RGNR write >= # supported regions, %" PRIu32 | |
3236 | " > %" PRIu32 "\n", (uint32_t)value, nrgs); | |
3237 | return; | |
3238 | } | |
3239 | ||
3240 | raw_write(env, ri, value); | |
3241 | } | |
3242 | ||
3243 | static const ARMCPRegInfo pmsav7_cp_reginfo[] = { | |
69ceea64 PM |
3244 | /* Reset for all these registers is handled in arm_cpu_reset(), |
3245 | * because the PMSAv7 is also used by M-profile CPUs, which do | |
3246 | * not register cpregs but still need the state to be reset. | |
3247 | */ | |
6cb0b013 PC |
3248 | { .name = "DRBAR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 1, .opc2 = 0, |
3249 | .access = PL1_RW, .type = ARM_CP_NO_RAW, | |
3250 | .fieldoffset = offsetof(CPUARMState, pmsav7.drbar), | |
69ceea64 PM |
3251 | .readfn = pmsav7_read, .writefn = pmsav7_write, |
3252 | .resetfn = arm_cp_reset_ignore }, | |
6cb0b013 PC |
3253 | { .name = "DRSR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 1, .opc2 = 2, |
3254 | .access = PL1_RW, .type = ARM_CP_NO_RAW, | |
3255 | .fieldoffset = offsetof(CPUARMState, pmsav7.drsr), | |
69ceea64 PM |
3256 | .readfn = pmsav7_read, .writefn = pmsav7_write, |
3257 | .resetfn = arm_cp_reset_ignore }, | |
6cb0b013 PC |
3258 | { .name = "DRACR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 1, .opc2 = 4, |
3259 | .access = PL1_RW, .type = ARM_CP_NO_RAW, | |
3260 | .fieldoffset = offsetof(CPUARMState, pmsav7.dracr), | |
69ceea64 PM |
3261 | .readfn = pmsav7_read, .writefn = pmsav7_write, |
3262 | .resetfn = arm_cp_reset_ignore }, | |
6cb0b013 PC |
3263 | { .name = "RGNR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 2, .opc2 = 0, |
3264 | .access = PL1_RW, | |
1bc04a88 | 3265 | .fieldoffset = offsetof(CPUARMState, pmsav7.rnr[M_REG_NS]), |
69ceea64 PM |
3266 | .writefn = pmsav7_rgnr_write, |
3267 | .resetfn = arm_cp_reset_ignore }, | |
6cb0b013 PC |
3268 | REGINFO_SENTINEL |
3269 | }; | |
3270 | ||
18032bec PM |
3271 | static const ARMCPRegInfo pmsav5_cp_reginfo[] = { |
3272 | { .name = "DATA_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 0, | |
7a0e58fa | 3273 | .access = PL1_RW, .type = ARM_CP_ALIAS, |
7e09797c | 3274 | .fieldoffset = offsetof(CPUARMState, cp15.pmsav5_data_ap), |
18032bec PM |
3275 | .readfn = pmsav5_data_ap_read, .writefn = pmsav5_data_ap_write, }, |
3276 | { .name = "INSN_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 1, | |
7a0e58fa | 3277 | .access = PL1_RW, .type = ARM_CP_ALIAS, |
7e09797c | 3278 | .fieldoffset = offsetof(CPUARMState, cp15.pmsav5_insn_ap), |
18032bec PM |
3279 | .readfn = pmsav5_insn_ap_read, .writefn = pmsav5_insn_ap_write, }, |
3280 | { .name = "DATA_EXT_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 2, | |
3281 | .access = PL1_RW, | |
7e09797c PM |
3282 | .fieldoffset = offsetof(CPUARMState, cp15.pmsav5_data_ap), |
3283 | .resetvalue = 0, }, | |
18032bec PM |
3284 | { .name = "INSN_EXT_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 3, |
3285 | .access = PL1_RW, | |
7e09797c PM |
3286 | .fieldoffset = offsetof(CPUARMState, cp15.pmsav5_insn_ap), |
3287 | .resetvalue = 0, }, | |
ecce5c3c PM |
3288 | { .name = "DCACHE_CFG", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 0, |
3289 | .access = PL1_RW, | |
3290 | .fieldoffset = offsetof(CPUARMState, cp15.c2_data), .resetvalue = 0, }, | |
3291 | { .name = "ICACHE_CFG", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 1, | |
3292 | .access = PL1_RW, | |
3293 | .fieldoffset = offsetof(CPUARMState, cp15.c2_insn), .resetvalue = 0, }, | |
06d76f31 | 3294 | /* Protection region base and size registers */ |
e508a92b PM |
3295 | { .name = "946_PRBS0", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, |
3296 | .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0, | |
3297 | .fieldoffset = offsetof(CPUARMState, cp15.c6_region[0]) }, | |
3298 | { .name = "946_PRBS1", .cp = 15, .crn = 6, .crm = 1, .opc1 = 0, | |
3299 | .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0, | |
3300 | .fieldoffset = offsetof(CPUARMState, cp15.c6_region[1]) }, | |
3301 | { .name = "946_PRBS2", .cp = 15, .crn = 6, .crm = 2, .opc1 = 0, | |
3302 | .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0, | |
3303 | .fieldoffset = offsetof(CPUARMState, cp15.c6_region[2]) }, | |
3304 | { .name = "946_PRBS3", .cp = 15, .crn = 6, .crm = 3, .opc1 = 0, | |
3305 | .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0, | |
3306 | .fieldoffset = offsetof(CPUARMState, cp15.c6_region[3]) }, | |
3307 | { .name = "946_PRBS4", .cp = 15, .crn = 6, .crm = 4, .opc1 = 0, | |
3308 | .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0, | |
3309 | .fieldoffset = offsetof(CPUARMState, cp15.c6_region[4]) }, | |
3310 | { .name = "946_PRBS5", .cp = 15, .crn = 6, .crm = 5, .opc1 = 0, | |
3311 | .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0, | |
3312 | .fieldoffset = offsetof(CPUARMState, cp15.c6_region[5]) }, | |
3313 | { .name = "946_PRBS6", .cp = 15, .crn = 6, .crm = 6, .opc1 = 0, | |
3314 | .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0, | |
3315 | .fieldoffset = offsetof(CPUARMState, cp15.c6_region[6]) }, | |
3316 | { .name = "946_PRBS7", .cp = 15, .crn = 6, .crm = 7, .opc1 = 0, | |
3317 | .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0, | |
3318 | .fieldoffset = offsetof(CPUARMState, cp15.c6_region[7]) }, | |
18032bec PM |
3319 | REGINFO_SENTINEL |
3320 | }; | |
3321 | ||
c4241c7d PM |
3322 | static void vmsa_ttbcr_raw_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3323 | uint64_t value) | |
ecce5c3c | 3324 | { |
11f136ee | 3325 | TCR *tcr = raw_ptr(env, ri); |
2ebcebe2 PM |
3326 | int maskshift = extract32(value, 0, 3); |
3327 | ||
e389be16 FA |
3328 | if (!arm_feature(env, ARM_FEATURE_V8)) { |
3329 | if (arm_feature(env, ARM_FEATURE_LPAE) && (value & TTBCR_EAE)) { | |
3330 | /* Pre ARMv8 bits [21:19], [15:14] and [6:3] are UNK/SBZP when | |
3331 | * using Long-desciptor translation table format */ | |
3332 | value &= ~((7 << 19) | (3 << 14) | (0xf << 3)); | |
3333 | } else if (arm_feature(env, ARM_FEATURE_EL3)) { | |
3334 | /* In an implementation that includes the Security Extensions | |
3335 | * TTBCR has additional fields PD0 [4] and PD1 [5] for | |
3336 | * Short-descriptor translation table format. | |
3337 | */ | |
3338 | value &= TTBCR_PD1 | TTBCR_PD0 | TTBCR_N; | |
3339 | } else { | |
3340 | value &= TTBCR_N; | |
3341 | } | |
e42c4db3 | 3342 | } |
e389be16 | 3343 | |
b6af0975 | 3344 | /* Update the masks corresponding to the TCR bank being written |
11f136ee | 3345 | * Note that we always calculate mask and base_mask, but |
e42c4db3 | 3346 | * they are only used for short-descriptor tables (ie if EAE is 0); |
11f136ee FA |
3347 | * for long-descriptor tables the TCR fields are used differently |
3348 | * and the mask and base_mask values are meaningless. | |
e42c4db3 | 3349 | */ |
11f136ee FA |
3350 | tcr->raw_tcr = value; |
3351 | tcr->mask = ~(((uint32_t)0xffffffffu) >> maskshift); | |
3352 | tcr->base_mask = ~((uint32_t)0x3fffu >> maskshift); | |
ecce5c3c PM |
3353 | } |
3354 | ||
c4241c7d PM |
3355 | static void vmsa_ttbcr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3356 | uint64_t value) | |
d4e6df63 | 3357 | { |
00c8cb0a | 3358 | ARMCPU *cpu = arm_env_get_cpu(env); |
ab638a32 | 3359 | TCR *tcr = raw_ptr(env, ri); |
00c8cb0a | 3360 | |
d4e6df63 PM |
3361 | if (arm_feature(env, ARM_FEATURE_LPAE)) { |
3362 | /* With LPAE the TTBCR could result in a change of ASID | |
3363 | * via the TTBCR.A1 bit, so do a TLB flush. | |
3364 | */ | |
d10eb08f | 3365 | tlb_flush(CPU(cpu)); |
d4e6df63 | 3366 | } |
ab638a32 RH |
3367 | /* Preserve the high half of TCR_EL1, set via TTBCR2. */ |
3368 | value = deposit64(tcr->raw_tcr, 0, 32, value); | |
c4241c7d | 3369 | vmsa_ttbcr_raw_write(env, ri, value); |
d4e6df63 PM |
3370 | } |
3371 | ||
ecce5c3c PM |
3372 | static void vmsa_ttbcr_reset(CPUARMState *env, const ARMCPRegInfo *ri) |
3373 | { | |
11f136ee FA |
3374 | TCR *tcr = raw_ptr(env, ri); |
3375 | ||
3376 | /* Reset both the TCR as well as the masks corresponding to the bank of | |
3377 | * the TCR being reset. | |
3378 | */ | |
3379 | tcr->raw_tcr = 0; | |
3380 | tcr->mask = 0; | |
3381 | tcr->base_mask = 0xffffc000u; | |
ecce5c3c PM |
3382 | } |
3383 | ||
cb2e37df PM |
3384 | static void vmsa_tcr_el1_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3385 | uint64_t value) | |
3386 | { | |
00c8cb0a | 3387 | ARMCPU *cpu = arm_env_get_cpu(env); |
11f136ee | 3388 | TCR *tcr = raw_ptr(env, ri); |
00c8cb0a | 3389 | |
cb2e37df | 3390 | /* For AArch64 the A1 bit could result in a change of ASID, so TLB flush. */ |
d10eb08f | 3391 | tlb_flush(CPU(cpu)); |
11f136ee | 3392 | tcr->raw_tcr = value; |
cb2e37df PM |
3393 | } |
3394 | ||
327ed10f PM |
3395 | static void vmsa_ttbr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3396 | uint64_t value) | |
3397 | { | |
93f379b0 RH |
3398 | /* If the ASID changes (with a 64-bit write), we must flush the TLB. */ |
3399 | if (cpreg_field_is_64bit(ri) && | |
3400 | extract64(raw_read(env, ri) ^ value, 48, 16) != 0) { | |
00c8cb0a | 3401 | ARMCPU *cpu = arm_env_get_cpu(env); |
d10eb08f | 3402 | tlb_flush(CPU(cpu)); |
327ed10f PM |
3403 | } |
3404 | raw_write(env, ri, value); | |
3405 | } | |
3406 | ||
b698e9cf EI |
3407 | static void vttbr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3408 | uint64_t value) | |
3409 | { | |
3410 | ARMCPU *cpu = arm_env_get_cpu(env); | |
3411 | CPUState *cs = CPU(cpu); | |
3412 | ||
3413 | /* Accesses to VTTBR may change the VMID so we must flush the TLB. */ | |
3414 | if (raw_read(env, ri) != value) { | |
0336cbf8 | 3415 | tlb_flush_by_mmuidx(cs, |
8bd5c820 PM |
3416 | ARMMMUIdxBit_S12NSE1 | |
3417 | ARMMMUIdxBit_S12NSE0 | | |
3418 | ARMMMUIdxBit_S2NS); | |
b698e9cf EI |
3419 | raw_write(env, ri, value); |
3420 | } | |
3421 | } | |
3422 | ||
8e5d75c9 | 3423 | static const ARMCPRegInfo vmsa_pmsa_cp_reginfo[] = { |
18032bec | 3424 | { .name = "DFSR", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 0, |
7a0e58fa | 3425 | .access = PL1_RW, .type = ARM_CP_ALIAS, |
4a7e2d73 | 3426 | .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.dfsr_s), |
b061a82b | 3427 | offsetoflow32(CPUARMState, cp15.dfsr_ns) }, }, |
18032bec | 3428 | { .name = "IFSR", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 1, |
88ca1c2d FA |
3429 | .access = PL1_RW, .resetvalue = 0, |
3430 | .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.ifsr_s), | |
3431 | offsetoflow32(CPUARMState, cp15.ifsr_ns) } }, | |
8e5d75c9 PC |
3432 | { .name = "DFAR", .cp = 15, .opc1 = 0, .crn = 6, .crm = 0, .opc2 = 0, |
3433 | .access = PL1_RW, .resetvalue = 0, | |
3434 | .bank_fieldoffsets = { offsetof(CPUARMState, cp15.dfar_s), | |
3435 | offsetof(CPUARMState, cp15.dfar_ns) } }, | |
3436 | { .name = "FAR_EL1", .state = ARM_CP_STATE_AA64, | |
3437 | .opc0 = 3, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 0, | |
3438 | .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.far_el[1]), | |
3439 | .resetvalue = 0, }, | |
3440 | REGINFO_SENTINEL | |
3441 | }; | |
3442 | ||
3443 | static const ARMCPRegInfo vmsa_cp_reginfo[] = { | |
6cd8a264 RH |
3444 | { .name = "ESR_EL1", .state = ARM_CP_STATE_AA64, |
3445 | .opc0 = 3, .crn = 5, .crm = 2, .opc1 = 0, .opc2 = 0, | |
3446 | .access = PL1_RW, | |
d81c519c | 3447 | .fieldoffset = offsetof(CPUARMState, cp15.esr_el[1]), .resetvalue = 0, }, |
327ed10f | 3448 | { .name = "TTBR0_EL1", .state = ARM_CP_STATE_BOTH, |
7dd8c9af FA |
3449 | .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 0, |
3450 | .access = PL1_RW, .writefn = vmsa_ttbr_write, .resetvalue = 0, | |
3451 | .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr0_s), | |
3452 | offsetof(CPUARMState, cp15.ttbr0_ns) } }, | |
327ed10f | 3453 | { .name = "TTBR1_EL1", .state = ARM_CP_STATE_BOTH, |
7dd8c9af FA |
3454 | .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 1, |
3455 | .access = PL1_RW, .writefn = vmsa_ttbr_write, .resetvalue = 0, | |
3456 | .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr1_s), | |
3457 | offsetof(CPUARMState, cp15.ttbr1_ns) } }, | |
cb2e37df PM |
3458 | { .name = "TCR_EL1", .state = ARM_CP_STATE_AA64, |
3459 | .opc0 = 3, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 2, | |
3460 | .access = PL1_RW, .writefn = vmsa_tcr_el1_write, | |
3461 | .resetfn = vmsa_ttbcr_reset, .raw_writefn = raw_write, | |
11f136ee | 3462 | .fieldoffset = offsetof(CPUARMState, cp15.tcr_el[1]) }, |
cb2e37df | 3463 | { .name = "TTBCR", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 2, |
7a0e58fa | 3464 | .access = PL1_RW, .type = ARM_CP_ALIAS, .writefn = vmsa_ttbcr_write, |
b061a82b | 3465 | .raw_writefn = vmsa_ttbcr_raw_write, |
11f136ee FA |
3466 | .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tcr_el[3]), |
3467 | offsetoflow32(CPUARMState, cp15.tcr_el[1])} }, | |
18032bec PM |
3468 | REGINFO_SENTINEL |
3469 | }; | |
3470 | ||
ab638a32 RH |
3471 | /* Note that unlike TTBCR, writing to TTBCR2 does not require flushing |
3472 | * qemu tlbs nor adjusting cached masks. | |
3473 | */ | |
3474 | static const ARMCPRegInfo ttbcr2_reginfo = { | |
3475 | .name = "TTBCR2", .cp = 15, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 3, | |
3476 | .access = PL1_RW, .type = ARM_CP_ALIAS, | |
3477 | .bank_fieldoffsets = { offsetofhigh32(CPUARMState, cp15.tcr_el[3]), | |
3478 | offsetofhigh32(CPUARMState, cp15.tcr_el[1]) }, | |
3479 | }; | |
3480 | ||
c4241c7d PM |
3481 | static void omap_ticonfig_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3482 | uint64_t value) | |
1047b9d7 PM |
3483 | { |
3484 | env->cp15.c15_ticonfig = value & 0xe7; | |
3485 | /* The OS_TYPE bit in this register changes the reported CPUID! */ | |
3486 | env->cp15.c0_cpuid = (value & (1 << 5)) ? | |
3487 | ARM_CPUID_TI915T : ARM_CPUID_TI925T; | |
1047b9d7 PM |
3488 | } |
3489 | ||
c4241c7d PM |
3490 | static void omap_threadid_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3491 | uint64_t value) | |
1047b9d7 PM |
3492 | { |
3493 | env->cp15.c15_threadid = value & 0xffff; | |
1047b9d7 PM |
3494 | } |
3495 | ||
c4241c7d PM |
3496 | static void omap_wfi_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3497 | uint64_t value) | |
1047b9d7 PM |
3498 | { |
3499 | /* Wait-for-interrupt (deprecated) */ | |
c3affe56 | 3500 | cpu_interrupt(CPU(arm_env_get_cpu(env)), CPU_INTERRUPT_HALT); |
1047b9d7 PM |
3501 | } |
3502 | ||
c4241c7d PM |
3503 | static void omap_cachemaint_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3504 | uint64_t value) | |
c4804214 PM |
3505 | { |
3506 | /* On OMAP there are registers indicating the max/min index of dcache lines | |
3507 | * containing a dirty line; cache flush operations have to reset these. | |
3508 | */ | |
3509 | env->cp15.c15_i_max = 0x000; | |
3510 | env->cp15.c15_i_min = 0xff0; | |
c4804214 PM |
3511 | } |
3512 | ||
18032bec PM |
3513 | static const ARMCPRegInfo omap_cp_reginfo[] = { |
3514 | { .name = "DFSR", .cp = 15, .crn = 5, .crm = CP_ANY, | |
3515 | .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_OVERRIDE, | |
d81c519c | 3516 | .fieldoffset = offsetoflow32(CPUARMState, cp15.esr_el[1]), |
6cd8a264 | 3517 | .resetvalue = 0, }, |
1047b9d7 PM |
3518 | { .name = "", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 0, |
3519 | .access = PL1_RW, .type = ARM_CP_NOP }, | |
3520 | { .name = "TICONFIG", .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0, | |
3521 | .access = PL1_RW, | |
3522 | .fieldoffset = offsetof(CPUARMState, cp15.c15_ticonfig), .resetvalue = 0, | |
3523 | .writefn = omap_ticonfig_write }, | |
3524 | { .name = "IMAX", .cp = 15, .crn = 15, .crm = 2, .opc1 = 0, .opc2 = 0, | |
3525 | .access = PL1_RW, | |
3526 | .fieldoffset = offsetof(CPUARMState, cp15.c15_i_max), .resetvalue = 0, }, | |
3527 | { .name = "IMIN", .cp = 15, .crn = 15, .crm = 3, .opc1 = 0, .opc2 = 0, | |
3528 | .access = PL1_RW, .resetvalue = 0xff0, | |
3529 | .fieldoffset = offsetof(CPUARMState, cp15.c15_i_min) }, | |
3530 | { .name = "THREADID", .cp = 15, .crn = 15, .crm = 4, .opc1 = 0, .opc2 = 0, | |
3531 | .access = PL1_RW, | |
3532 | .fieldoffset = offsetof(CPUARMState, cp15.c15_threadid), .resetvalue = 0, | |
3533 | .writefn = omap_threadid_write }, | |
3534 | { .name = "TI925T_STATUS", .cp = 15, .crn = 15, | |
3535 | .crm = 8, .opc1 = 0, .opc2 = 0, .access = PL1_RW, | |
7a0e58fa | 3536 | .type = ARM_CP_NO_RAW, |
1047b9d7 PM |
3537 | .readfn = arm_cp_read_zero, .writefn = omap_wfi_write, }, |
3538 | /* TODO: Peripheral port remap register: | |
3539 | * On OMAP2 mcr p15, 0, rn, c15, c2, 4 sets up the interrupt controller | |
3540 | * base address at $rn & ~0xfff and map size of 0x200 << ($rn & 0xfff), | |
3541 | * when MMU is off. | |
3542 | */ | |
c4804214 | 3543 | { .name = "OMAP_CACHEMAINT", .cp = 15, .crn = 7, .crm = CP_ANY, |
d4e6df63 | 3544 | .opc1 = 0, .opc2 = CP_ANY, .access = PL1_W, |
7a0e58fa | 3545 | .type = ARM_CP_OVERRIDE | ARM_CP_NO_RAW, |
c4804214 | 3546 | .writefn = omap_cachemaint_write }, |
34f90529 PM |
3547 | { .name = "C9", .cp = 15, .crn = 9, |
3548 | .crm = CP_ANY, .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, | |
3549 | .type = ARM_CP_CONST | ARM_CP_OVERRIDE, .resetvalue = 0 }, | |
1047b9d7 PM |
3550 | REGINFO_SENTINEL |
3551 | }; | |
3552 | ||
c4241c7d PM |
3553 | static void xscale_cpar_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3554 | uint64_t value) | |
1047b9d7 | 3555 | { |
c0f4af17 | 3556 | env->cp15.c15_cpar = value & 0x3fff; |
1047b9d7 PM |
3557 | } |
3558 | ||
3559 | static const ARMCPRegInfo xscale_cp_reginfo[] = { | |
3560 | { .name = "XSCALE_CPAR", | |
3561 | .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0, .access = PL1_RW, | |
3562 | .fieldoffset = offsetof(CPUARMState, cp15.c15_cpar), .resetvalue = 0, | |
3563 | .writefn = xscale_cpar_write, }, | |
2771db27 PM |
3564 | { .name = "XSCALE_AUXCR", |
3565 | .cp = 15, .crn = 1, .crm = 0, .opc1 = 0, .opc2 = 1, .access = PL1_RW, | |
3566 | .fieldoffset = offsetof(CPUARMState, cp15.c1_xscaleauxcr), | |
3567 | .resetvalue = 0, }, | |
3b771579 PM |
3568 | /* XScale specific cache-lockdown: since we have no cache we NOP these |
3569 | * and hope the guest does not really rely on cache behaviour. | |
3570 | */ | |
3571 | { .name = "XSCALE_LOCK_ICACHE_LINE", | |
3572 | .cp = 15, .opc1 = 0, .crn = 9, .crm = 1, .opc2 = 0, | |
3573 | .access = PL1_W, .type = ARM_CP_NOP }, | |
3574 | { .name = "XSCALE_UNLOCK_ICACHE", | |
3575 | .cp = 15, .opc1 = 0, .crn = 9, .crm = 1, .opc2 = 1, | |
3576 | .access = PL1_W, .type = ARM_CP_NOP }, | |
3577 | { .name = "XSCALE_DCACHE_LOCK", | |
3578 | .cp = 15, .opc1 = 0, .crn = 9, .crm = 2, .opc2 = 0, | |
3579 | .access = PL1_RW, .type = ARM_CP_NOP }, | |
3580 | { .name = "XSCALE_UNLOCK_DCACHE", | |
3581 | .cp = 15, .opc1 = 0, .crn = 9, .crm = 2, .opc2 = 1, | |
3582 | .access = PL1_W, .type = ARM_CP_NOP }, | |
1047b9d7 PM |
3583 | REGINFO_SENTINEL |
3584 | }; | |
3585 | ||
3586 | static const ARMCPRegInfo dummy_c15_cp_reginfo[] = { | |
3587 | /* RAZ/WI the whole crn=15 space, when we don't have a more specific | |
3588 | * implementation of this implementation-defined space. | |
3589 | * Ideally this should eventually disappear in favour of actually | |
3590 | * implementing the correct behaviour for all cores. | |
3591 | */ | |
3592 | { .name = "C15_IMPDEF", .cp = 15, .crn = 15, | |
3593 | .crm = CP_ANY, .opc1 = CP_ANY, .opc2 = CP_ANY, | |
3671cd87 | 3594 | .access = PL1_RW, |
7a0e58fa | 3595 | .type = ARM_CP_CONST | ARM_CP_NO_RAW | ARM_CP_OVERRIDE, |
d4e6df63 | 3596 | .resetvalue = 0 }, |
18032bec PM |
3597 | REGINFO_SENTINEL |
3598 | }; | |
3599 | ||
c4804214 PM |
3600 | static const ARMCPRegInfo cache_dirty_status_cp_reginfo[] = { |
3601 | /* Cache status: RAZ because we have no cache so it's always clean */ | |
3602 | { .name = "CDSR", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 6, | |
7a0e58fa | 3603 | .access = PL1_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW, |
d4e6df63 | 3604 | .resetvalue = 0 }, |
c4804214 PM |
3605 | REGINFO_SENTINEL |
3606 | }; | |
3607 | ||
3608 | static const ARMCPRegInfo cache_block_ops_cp_reginfo[] = { | |
3609 | /* We never have a a block transfer operation in progress */ | |
3610 | { .name = "BXSR", .cp = 15, .crn = 7, .crm = 12, .opc1 = 0, .opc2 = 4, | |
7a0e58fa | 3611 | .access = PL0_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW, |
d4e6df63 | 3612 | .resetvalue = 0 }, |
30b05bba PM |
3613 | /* The cache ops themselves: these all NOP for QEMU */ |
3614 | { .name = "IICR", .cp = 15, .crm = 5, .opc1 = 0, | |
3615 | .access = PL1_W, .type = ARM_CP_NOP|ARM_CP_64BIT }, | |
3616 | { .name = "IDCR", .cp = 15, .crm = 6, .opc1 = 0, | |
3617 | .access = PL1_W, .type = ARM_CP_NOP|ARM_CP_64BIT }, | |
3618 | { .name = "CDCR", .cp = 15, .crm = 12, .opc1 = 0, | |
3619 | .access = PL0_W, .type = ARM_CP_NOP|ARM_CP_64BIT }, | |
3620 | { .name = "PIR", .cp = 15, .crm = 12, .opc1 = 1, | |
3621 | .access = PL0_W, .type = ARM_CP_NOP|ARM_CP_64BIT }, | |
3622 | { .name = "PDR", .cp = 15, .crm = 12, .opc1 = 2, | |
3623 | .access = PL0_W, .type = ARM_CP_NOP|ARM_CP_64BIT }, | |
3624 | { .name = "CIDCR", .cp = 15, .crm = 14, .opc1 = 0, | |
3625 | .access = PL1_W, .type = ARM_CP_NOP|ARM_CP_64BIT }, | |
c4804214 PM |
3626 | REGINFO_SENTINEL |
3627 | }; | |
3628 | ||
3629 | static const ARMCPRegInfo cache_test_clean_cp_reginfo[] = { | |
3630 | /* The cache test-and-clean instructions always return (1 << 30) | |
3631 | * to indicate that there are no dirty cache lines. | |
3632 | */ | |
3633 | { .name = "TC_DCACHE", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 3, | |
7a0e58fa | 3634 | .access = PL0_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW, |
d4e6df63 | 3635 | .resetvalue = (1 << 30) }, |
c4804214 | 3636 | { .name = "TCI_DCACHE", .cp = 15, .crn = 7, .crm = 14, .opc1 = 0, .opc2 = 3, |
7a0e58fa | 3637 | .access = PL0_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW, |
d4e6df63 | 3638 | .resetvalue = (1 << 30) }, |
c4804214 PM |
3639 | REGINFO_SENTINEL |
3640 | }; | |
3641 | ||
34f90529 PM |
3642 | static const ARMCPRegInfo strongarm_cp_reginfo[] = { |
3643 | /* Ignore ReadBuffer accesses */ | |
3644 | { .name = "C9_READBUFFER", .cp = 15, .crn = 9, | |
3645 | .crm = CP_ANY, .opc1 = CP_ANY, .opc2 = CP_ANY, | |
d4e6df63 | 3646 | .access = PL1_RW, .resetvalue = 0, |
7a0e58fa | 3647 | .type = ARM_CP_CONST | ARM_CP_OVERRIDE | ARM_CP_NO_RAW }, |
34f90529 PM |
3648 | REGINFO_SENTINEL |
3649 | }; | |
3650 | ||
731de9e6 EI |
3651 | static uint64_t midr_read(CPUARMState *env, const ARMCPRegInfo *ri) |
3652 | { | |
3653 | ARMCPU *cpu = arm_env_get_cpu(env); | |
3654 | unsigned int cur_el = arm_current_el(env); | |
3655 | bool secure = arm_is_secure(env); | |
3656 | ||
3657 | if (arm_feature(&cpu->env, ARM_FEATURE_EL2) && !secure && cur_el == 1) { | |
3658 | return env->cp15.vpidr_el2; | |
3659 | } | |
3660 | return raw_read(env, ri); | |
3661 | } | |
3662 | ||
06a7e647 | 3663 | static uint64_t mpidr_read_val(CPUARMState *env) |
81bdde9d | 3664 | { |
eb5e1d3c PF |
3665 | ARMCPU *cpu = ARM_CPU(arm_env_get_cpu(env)); |
3666 | uint64_t mpidr = cpu->mp_affinity; | |
3667 | ||
81bdde9d | 3668 | if (arm_feature(env, ARM_FEATURE_V7MP)) { |
78dbbbe4 | 3669 | mpidr |= (1U << 31); |
81bdde9d PM |
3670 | /* Cores which are uniprocessor (non-coherent) |
3671 | * but still implement the MP extensions set | |
a8e81b31 | 3672 | * bit 30. (For instance, Cortex-R5). |
81bdde9d | 3673 | */ |
a8e81b31 PC |
3674 | if (cpu->mp_is_up) { |
3675 | mpidr |= (1u << 30); | |
3676 | } | |
81bdde9d | 3677 | } |
c4241c7d | 3678 | return mpidr; |
81bdde9d PM |
3679 | } |
3680 | ||
06a7e647 EI |
3681 | static uint64_t mpidr_read(CPUARMState *env, const ARMCPRegInfo *ri) |
3682 | { | |
f0d574d6 EI |
3683 | unsigned int cur_el = arm_current_el(env); |
3684 | bool secure = arm_is_secure(env); | |
3685 | ||
3686 | if (arm_feature(env, ARM_FEATURE_EL2) && !secure && cur_el == 1) { | |
3687 | return env->cp15.vmpidr_el2; | |
3688 | } | |
06a7e647 EI |
3689 | return mpidr_read_val(env); |
3690 | } | |
3691 | ||
7ac681cf | 3692 | static const ARMCPRegInfo lpae_cp_reginfo[] = { |
a903c449 | 3693 | /* NOP AMAIR0/1 */ |
b0fe2427 PM |
3694 | { .name = "AMAIR0", .state = ARM_CP_STATE_BOTH, |
3695 | .opc0 = 3, .crn = 10, .crm = 3, .opc1 = 0, .opc2 = 0, | |
a903c449 | 3696 | .access = PL1_RW, .type = ARM_CP_CONST, |
7ac681cf | 3697 | .resetvalue = 0 }, |
b0fe2427 | 3698 | /* AMAIR1 is mapped to AMAIR_EL1[63:32] */ |
7ac681cf | 3699 | { .name = "AMAIR1", .cp = 15, .crn = 10, .crm = 3, .opc1 = 0, .opc2 = 1, |
a903c449 | 3700 | .access = PL1_RW, .type = ARM_CP_CONST, |
7ac681cf | 3701 | .resetvalue = 0 }, |
891a2fe7 | 3702 | { .name = "PAR", .cp = 15, .crm = 7, .opc1 = 0, |
01c097f7 FA |
3703 | .access = PL1_RW, .type = ARM_CP_64BIT, .resetvalue = 0, |
3704 | .bank_fieldoffsets = { offsetof(CPUARMState, cp15.par_s), | |
3705 | offsetof(CPUARMState, cp15.par_ns)} }, | |
891a2fe7 | 3706 | { .name = "TTBR0", .cp = 15, .crm = 2, .opc1 = 0, |
7a0e58fa | 3707 | .access = PL1_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS, |
7dd8c9af FA |
3708 | .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr0_s), |
3709 | offsetof(CPUARMState, cp15.ttbr0_ns) }, | |
b061a82b | 3710 | .writefn = vmsa_ttbr_write, }, |
891a2fe7 | 3711 | { .name = "TTBR1", .cp = 15, .crm = 2, .opc1 = 1, |
7a0e58fa | 3712 | .access = PL1_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS, |
7dd8c9af FA |
3713 | .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr1_s), |
3714 | offsetof(CPUARMState, cp15.ttbr1_ns) }, | |
b061a82b | 3715 | .writefn = vmsa_ttbr_write, }, |
7ac681cf PM |
3716 | REGINFO_SENTINEL |
3717 | }; | |
3718 | ||
c4241c7d | 3719 | static uint64_t aa64_fpcr_read(CPUARMState *env, const ARMCPRegInfo *ri) |
b0d2b7d0 | 3720 | { |
c4241c7d | 3721 | return vfp_get_fpcr(env); |
b0d2b7d0 PM |
3722 | } |
3723 | ||
c4241c7d PM |
3724 | static void aa64_fpcr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3725 | uint64_t value) | |
b0d2b7d0 PM |
3726 | { |
3727 | vfp_set_fpcr(env, value); | |
b0d2b7d0 PM |
3728 | } |
3729 | ||
c4241c7d | 3730 | static uint64_t aa64_fpsr_read(CPUARMState *env, const ARMCPRegInfo *ri) |
b0d2b7d0 | 3731 | { |
c4241c7d | 3732 | return vfp_get_fpsr(env); |
b0d2b7d0 PM |
3733 | } |
3734 | ||
c4241c7d PM |
3735 | static void aa64_fpsr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3736 | uint64_t value) | |
b0d2b7d0 PM |
3737 | { |
3738 | vfp_set_fpsr(env, value); | |
b0d2b7d0 PM |
3739 | } |
3740 | ||
3f208fd7 PM |
3741 | static CPAccessResult aa64_daif_access(CPUARMState *env, const ARMCPRegInfo *ri, |
3742 | bool isread) | |
c2b820fe | 3743 | { |
137feaa9 | 3744 | if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_UMA)) { |
c2b820fe PM |
3745 | return CP_ACCESS_TRAP; |
3746 | } | |
3747 | return CP_ACCESS_OK; | |
3748 | } | |
3749 | ||
3750 | static void aa64_daif_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
3751 | uint64_t value) | |
3752 | { | |
3753 | env->daif = value & PSTATE_DAIF; | |
3754 | } | |
3755 | ||
8af35c37 | 3756 | static CPAccessResult aa64_cacheop_access(CPUARMState *env, |
3f208fd7 PM |
3757 | const ARMCPRegInfo *ri, |
3758 | bool isread) | |
8af35c37 PM |
3759 | { |
3760 | /* Cache invalidate/clean: NOP, but EL0 must UNDEF unless | |
3761 | * SCTLR_EL1.UCI is set. | |
3762 | */ | |
137feaa9 | 3763 | if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_UCI)) { |
8af35c37 PM |
3764 | return CP_ACCESS_TRAP; |
3765 | } | |
3766 | return CP_ACCESS_OK; | |
3767 | } | |
3768 | ||
dbb1fb27 AB |
3769 | /* See: D4.7.2 TLB maintenance requirements and the TLB maintenance instructions |
3770 | * Page D4-1736 (DDI0487A.b) | |
3771 | */ | |
3772 | ||
fd3ed969 PM |
3773 | static void tlbi_aa64_vmalle1is_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3774 | uint64_t value) | |
168aa23b | 3775 | { |
29a0af61 | 3776 | CPUState *cs = env_cpu(env); |
fd3ed969 | 3777 | bool sec = arm_is_secure_below_el3(env); |
dbb1fb27 | 3778 | |
a67cf277 AB |
3779 | if (sec) { |
3780 | tlb_flush_by_mmuidx_all_cpus_synced(cs, | |
8bd5c820 PM |
3781 | ARMMMUIdxBit_S1SE1 | |
3782 | ARMMMUIdxBit_S1SE0); | |
a67cf277 AB |
3783 | } else { |
3784 | tlb_flush_by_mmuidx_all_cpus_synced(cs, | |
8bd5c820 PM |
3785 | ARMMMUIdxBit_S12NSE1 | |
3786 | ARMMMUIdxBit_S12NSE0); | |
fd3ed969 | 3787 | } |
168aa23b PM |
3788 | } |
3789 | ||
b4ab8ce9 PM |
3790 | static void tlbi_aa64_vmalle1_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3791 | uint64_t value) | |
3792 | { | |
29a0af61 | 3793 | CPUState *cs = env_cpu(env); |
b4ab8ce9 PM |
3794 | |
3795 | if (tlb_force_broadcast(env)) { | |
09a86dfa | 3796 | tlbi_aa64_vmalle1is_write(env, NULL, value); |
b4ab8ce9 PM |
3797 | return; |
3798 | } | |
3799 | ||
3800 | if (arm_is_secure_below_el3(env)) { | |
3801 | tlb_flush_by_mmuidx(cs, | |
3802 | ARMMMUIdxBit_S1SE1 | | |
3803 | ARMMMUIdxBit_S1SE0); | |
3804 | } else { | |
3805 | tlb_flush_by_mmuidx(cs, | |
3806 | ARMMMUIdxBit_S12NSE1 | | |
3807 | ARMMMUIdxBit_S12NSE0); | |
3808 | } | |
3809 | } | |
3810 | ||
fd3ed969 PM |
3811 | static void tlbi_aa64_alle1_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3812 | uint64_t value) | |
168aa23b | 3813 | { |
fd3ed969 PM |
3814 | /* Note that the 'ALL' scope must invalidate both stage 1 and |
3815 | * stage 2 translations, whereas most other scopes only invalidate | |
3816 | * stage 1 translations. | |
3817 | */ | |
00c8cb0a | 3818 | ARMCPU *cpu = arm_env_get_cpu(env); |
fd3ed969 PM |
3819 | CPUState *cs = CPU(cpu); |
3820 | ||
3821 | if (arm_is_secure_below_el3(env)) { | |
0336cbf8 | 3822 | tlb_flush_by_mmuidx(cs, |
8bd5c820 PM |
3823 | ARMMMUIdxBit_S1SE1 | |
3824 | ARMMMUIdxBit_S1SE0); | |
fd3ed969 PM |
3825 | } else { |
3826 | if (arm_feature(env, ARM_FEATURE_EL2)) { | |
0336cbf8 | 3827 | tlb_flush_by_mmuidx(cs, |
8bd5c820 PM |
3828 | ARMMMUIdxBit_S12NSE1 | |
3829 | ARMMMUIdxBit_S12NSE0 | | |
3830 | ARMMMUIdxBit_S2NS); | |
fd3ed969 | 3831 | } else { |
0336cbf8 | 3832 | tlb_flush_by_mmuidx(cs, |
8bd5c820 PM |
3833 | ARMMMUIdxBit_S12NSE1 | |
3834 | ARMMMUIdxBit_S12NSE0); | |
fd3ed969 PM |
3835 | } |
3836 | } | |
168aa23b PM |
3837 | } |
3838 | ||
fd3ed969 | 3839 | static void tlbi_aa64_alle2_write(CPUARMState *env, const ARMCPRegInfo *ri, |
fa439fc5 PM |
3840 | uint64_t value) |
3841 | { | |
fd3ed969 PM |
3842 | ARMCPU *cpu = arm_env_get_cpu(env); |
3843 | CPUState *cs = CPU(cpu); | |
3844 | ||
8bd5c820 | 3845 | tlb_flush_by_mmuidx(cs, ARMMMUIdxBit_S1E2); |
fd3ed969 PM |
3846 | } |
3847 | ||
43efaa33 PM |
3848 | static void tlbi_aa64_alle3_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3849 | uint64_t value) | |
3850 | { | |
3851 | ARMCPU *cpu = arm_env_get_cpu(env); | |
3852 | CPUState *cs = CPU(cpu); | |
3853 | ||
8bd5c820 | 3854 | tlb_flush_by_mmuidx(cs, ARMMMUIdxBit_S1E3); |
43efaa33 PM |
3855 | } |
3856 | ||
fd3ed969 PM |
3857 | static void tlbi_aa64_alle1is_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3858 | uint64_t value) | |
3859 | { | |
3860 | /* Note that the 'ALL' scope must invalidate both stage 1 and | |
3861 | * stage 2 translations, whereas most other scopes only invalidate | |
3862 | * stage 1 translations. | |
3863 | */ | |
29a0af61 | 3864 | CPUState *cs = env_cpu(env); |
fd3ed969 PM |
3865 | bool sec = arm_is_secure_below_el3(env); |
3866 | bool has_el2 = arm_feature(env, ARM_FEATURE_EL2); | |
a67cf277 AB |
3867 | |
3868 | if (sec) { | |
3869 | tlb_flush_by_mmuidx_all_cpus_synced(cs, | |
8bd5c820 PM |
3870 | ARMMMUIdxBit_S1SE1 | |
3871 | ARMMMUIdxBit_S1SE0); | |
a67cf277 AB |
3872 | } else if (has_el2) { |
3873 | tlb_flush_by_mmuidx_all_cpus_synced(cs, | |
8bd5c820 PM |
3874 | ARMMMUIdxBit_S12NSE1 | |
3875 | ARMMMUIdxBit_S12NSE0 | | |
3876 | ARMMMUIdxBit_S2NS); | |
a67cf277 AB |
3877 | } else { |
3878 | tlb_flush_by_mmuidx_all_cpus_synced(cs, | |
8bd5c820 PM |
3879 | ARMMMUIdxBit_S12NSE1 | |
3880 | ARMMMUIdxBit_S12NSE0); | |
fa439fc5 PM |
3881 | } |
3882 | } | |
3883 | ||
2bfb9d75 PM |
3884 | static void tlbi_aa64_alle2is_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3885 | uint64_t value) | |
3886 | { | |
29a0af61 | 3887 | CPUState *cs = env_cpu(env); |
2bfb9d75 | 3888 | |
8bd5c820 | 3889 | tlb_flush_by_mmuidx_all_cpus_synced(cs, ARMMMUIdxBit_S1E2); |
2bfb9d75 PM |
3890 | } |
3891 | ||
43efaa33 PM |
3892 | static void tlbi_aa64_alle3is_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3893 | uint64_t value) | |
3894 | { | |
29a0af61 | 3895 | CPUState *cs = env_cpu(env); |
43efaa33 | 3896 | |
8bd5c820 | 3897 | tlb_flush_by_mmuidx_all_cpus_synced(cs, ARMMMUIdxBit_S1E3); |
43efaa33 PM |
3898 | } |
3899 | ||
fd3ed969 PM |
3900 | static void tlbi_aa64_vae2_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3901 | uint64_t value) | |
fa439fc5 | 3902 | { |
fd3ed969 PM |
3903 | /* Invalidate by VA, EL2 |
3904 | * Currently handles both VAE2 and VALE2, since we don't support | |
3905 | * flush-last-level-only. | |
3906 | */ | |
3907 | ARMCPU *cpu = arm_env_get_cpu(env); | |
3908 | CPUState *cs = CPU(cpu); | |
3909 | uint64_t pageaddr = sextract64(value << 12, 0, 56); | |
3910 | ||
8bd5c820 | 3911 | tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdxBit_S1E2); |
fd3ed969 PM |
3912 | } |
3913 | ||
43efaa33 PM |
3914 | static void tlbi_aa64_vae3_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3915 | uint64_t value) | |
3916 | { | |
3917 | /* Invalidate by VA, EL3 | |
3918 | * Currently handles both VAE3 and VALE3, since we don't support | |
3919 | * flush-last-level-only. | |
3920 | */ | |
3921 | ARMCPU *cpu = arm_env_get_cpu(env); | |
3922 | CPUState *cs = CPU(cpu); | |
3923 | uint64_t pageaddr = sextract64(value << 12, 0, 56); | |
3924 | ||
8bd5c820 | 3925 | tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdxBit_S1E3); |
43efaa33 PM |
3926 | } |
3927 | ||
fd3ed969 PM |
3928 | static void tlbi_aa64_vae1is_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3929 | uint64_t value) | |
3930 | { | |
a67cf277 AB |
3931 | ARMCPU *cpu = arm_env_get_cpu(env); |
3932 | CPUState *cs = CPU(cpu); | |
fd3ed969 | 3933 | bool sec = arm_is_secure_below_el3(env); |
fa439fc5 PM |
3934 | uint64_t pageaddr = sextract64(value << 12, 0, 56); |
3935 | ||
a67cf277 AB |
3936 | if (sec) { |
3937 | tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr, | |
8bd5c820 PM |
3938 | ARMMMUIdxBit_S1SE1 | |
3939 | ARMMMUIdxBit_S1SE0); | |
a67cf277 AB |
3940 | } else { |
3941 | tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr, | |
8bd5c820 PM |
3942 | ARMMMUIdxBit_S12NSE1 | |
3943 | ARMMMUIdxBit_S12NSE0); | |
fa439fc5 PM |
3944 | } |
3945 | } | |
3946 | ||
b4ab8ce9 PM |
3947 | static void tlbi_aa64_vae1_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3948 | uint64_t value) | |
3949 | { | |
3950 | /* Invalidate by VA, EL1&0 (AArch64 version). | |
3951 | * Currently handles all of VAE1, VAAE1, VAALE1 and VALE1, | |
3952 | * since we don't support flush-for-specific-ASID-only or | |
3953 | * flush-last-level-only. | |
3954 | */ | |
3955 | ARMCPU *cpu = arm_env_get_cpu(env); | |
3956 | CPUState *cs = CPU(cpu); | |
3957 | uint64_t pageaddr = sextract64(value << 12, 0, 56); | |
3958 | ||
3959 | if (tlb_force_broadcast(env)) { | |
3960 | tlbi_aa64_vae1is_write(env, NULL, value); | |
3961 | return; | |
3962 | } | |
3963 | ||
3964 | if (arm_is_secure_below_el3(env)) { | |
3965 | tlb_flush_page_by_mmuidx(cs, pageaddr, | |
3966 | ARMMMUIdxBit_S1SE1 | | |
3967 | ARMMMUIdxBit_S1SE0); | |
3968 | } else { | |
3969 | tlb_flush_page_by_mmuidx(cs, pageaddr, | |
3970 | ARMMMUIdxBit_S12NSE1 | | |
3971 | ARMMMUIdxBit_S12NSE0); | |
3972 | } | |
3973 | } | |
3974 | ||
fd3ed969 PM |
3975 | static void tlbi_aa64_vae2is_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3976 | uint64_t value) | |
fa439fc5 | 3977 | { |
29a0af61 | 3978 | CPUState *cs = env_cpu(env); |
fd3ed969 | 3979 | uint64_t pageaddr = sextract64(value << 12, 0, 56); |
fa439fc5 | 3980 | |
a67cf277 | 3981 | tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr, |
8bd5c820 | 3982 | ARMMMUIdxBit_S1E2); |
fa439fc5 PM |
3983 | } |
3984 | ||
43efaa33 PM |
3985 | static void tlbi_aa64_vae3is_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3986 | uint64_t value) | |
3987 | { | |
29a0af61 | 3988 | CPUState *cs = env_cpu(env); |
43efaa33 PM |
3989 | uint64_t pageaddr = sextract64(value << 12, 0, 56); |
3990 | ||
a67cf277 | 3991 | tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr, |
8bd5c820 | 3992 | ARMMMUIdxBit_S1E3); |
43efaa33 PM |
3993 | } |
3994 | ||
cea66e91 PM |
3995 | static void tlbi_aa64_ipas2e1_write(CPUARMState *env, const ARMCPRegInfo *ri, |
3996 | uint64_t value) | |
3997 | { | |
3998 | /* Invalidate by IPA. This has to invalidate any structures that | |
3999 | * contain only stage 2 translation information, but does not need | |
4000 | * to apply to structures that contain combined stage 1 and stage 2 | |
4001 | * translation information. | |
4002 | * This must NOP if EL2 isn't implemented or SCR_EL3.NS is zero. | |
4003 | */ | |
4004 | ARMCPU *cpu = arm_env_get_cpu(env); | |
4005 | CPUState *cs = CPU(cpu); | |
4006 | uint64_t pageaddr; | |
4007 | ||
4008 | if (!arm_feature(env, ARM_FEATURE_EL2) || !(env->cp15.scr_el3 & SCR_NS)) { | |
4009 | return; | |
4010 | } | |
4011 | ||
4012 | pageaddr = sextract64(value << 12, 0, 48); | |
4013 | ||
8bd5c820 | 4014 | tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdxBit_S2NS); |
cea66e91 PM |
4015 | } |
4016 | ||
4017 | static void tlbi_aa64_ipas2e1is_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
4018 | uint64_t value) | |
4019 | { | |
29a0af61 | 4020 | CPUState *cs = env_cpu(env); |
cea66e91 PM |
4021 | uint64_t pageaddr; |
4022 | ||
4023 | if (!arm_feature(env, ARM_FEATURE_EL2) || !(env->cp15.scr_el3 & SCR_NS)) { | |
4024 | return; | |
4025 | } | |
4026 | ||
4027 | pageaddr = sextract64(value << 12, 0, 48); | |
4028 | ||
a67cf277 | 4029 | tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr, |
8bd5c820 | 4030 | ARMMMUIdxBit_S2NS); |
cea66e91 PM |
4031 | } |
4032 | ||
3f208fd7 PM |
4033 | static CPAccessResult aa64_zva_access(CPUARMState *env, const ARMCPRegInfo *ri, |
4034 | bool isread) | |
aca3f40b PM |
4035 | { |
4036 | /* We don't implement EL2, so the only control on DC ZVA is the | |
4037 | * bit in the SCTLR which can prohibit access for EL0. | |
4038 | */ | |
137feaa9 | 4039 | if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_DZE)) { |
aca3f40b PM |
4040 | return CP_ACCESS_TRAP; |
4041 | } | |
4042 | return CP_ACCESS_OK; | |
4043 | } | |
4044 | ||
4045 | static uint64_t aa64_dczid_read(CPUARMState *env, const ARMCPRegInfo *ri) | |
4046 | { | |
4047 | ARMCPU *cpu = arm_env_get_cpu(env); | |
4048 | int dzp_bit = 1 << 4; | |
4049 | ||
4050 | /* DZP indicates whether DC ZVA access is allowed */ | |
3f208fd7 | 4051 | if (aa64_zva_access(env, NULL, false) == CP_ACCESS_OK) { |
aca3f40b PM |
4052 | dzp_bit = 0; |
4053 | } | |
4054 | return cpu->dcz_blocksize | dzp_bit; | |
4055 | } | |
4056 | ||
3f208fd7 PM |
4057 | static CPAccessResult sp_el0_access(CPUARMState *env, const ARMCPRegInfo *ri, |
4058 | bool isread) | |
f502cfc2 | 4059 | { |
cdcf1405 | 4060 | if (!(env->pstate & PSTATE_SP)) { |
f502cfc2 PM |
4061 | /* Access to SP_EL0 is undefined if it's being used as |
4062 | * the stack pointer. | |
4063 | */ | |
4064 | return CP_ACCESS_TRAP_UNCATEGORIZED; | |
4065 | } | |
4066 | return CP_ACCESS_OK; | |
4067 | } | |
4068 | ||
4069 | static uint64_t spsel_read(CPUARMState *env, const ARMCPRegInfo *ri) | |
4070 | { | |
4071 | return env->pstate & PSTATE_SP; | |
4072 | } | |
4073 | ||
4074 | static void spsel_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t val) | |
4075 | { | |
4076 | update_spsel(env, val); | |
4077 | } | |
4078 | ||
137feaa9 FA |
4079 | static void sctlr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
4080 | uint64_t value) | |
4081 | { | |
4082 | ARMCPU *cpu = arm_env_get_cpu(env); | |
4083 | ||
4084 | if (raw_read(env, ri) == value) { | |
4085 | /* Skip the TLB flush if nothing actually changed; Linux likes | |
4086 | * to do a lot of pointless SCTLR writes. | |
4087 | */ | |
4088 | return; | |
4089 | } | |
4090 | ||
06312feb PM |
4091 | if (arm_feature(env, ARM_FEATURE_PMSA) && !cpu->has_mpu) { |
4092 | /* M bit is RAZ/WI for PMSA with no MPU implemented */ | |
4093 | value &= ~SCTLR_M; | |
4094 | } | |
4095 | ||
137feaa9 FA |
4096 | raw_write(env, ri, value); |
4097 | /* ??? Lots of these bits are not implemented. */ | |
4098 | /* This may enable/disable the MMU, so do a TLB flush. */ | |
d10eb08f | 4099 | tlb_flush(CPU(cpu)); |
137feaa9 FA |
4100 | } |
4101 | ||
3f208fd7 PM |
4102 | static CPAccessResult fpexc32_access(CPUARMState *env, const ARMCPRegInfo *ri, |
4103 | bool isread) | |
03fbf20f PM |
4104 | { |
4105 | if ((env->cp15.cptr_el[2] & CPTR_TFP) && arm_current_el(env) == 2) { | |
f2cae609 | 4106 | return CP_ACCESS_TRAP_FP_EL2; |
03fbf20f PM |
4107 | } |
4108 | if (env->cp15.cptr_el[3] & CPTR_TFP) { | |
f2cae609 | 4109 | return CP_ACCESS_TRAP_FP_EL3; |
03fbf20f PM |
4110 | } |
4111 | return CP_ACCESS_OK; | |
4112 | } | |
4113 | ||
a8d64e73 PM |
4114 | static void sdcr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
4115 | uint64_t value) | |
4116 | { | |
4117 | env->cp15.mdcr_el3 = value & SDCR_VALID_MASK; | |
4118 | } | |
4119 | ||
b0d2b7d0 PM |
4120 | static const ARMCPRegInfo v8_cp_reginfo[] = { |
4121 | /* Minimal set of EL0-visible registers. This will need to be expanded | |
4122 | * significantly for system emulation of AArch64 CPUs. | |
4123 | */ | |
4124 | { .name = "NZCV", .state = ARM_CP_STATE_AA64, | |
4125 | .opc0 = 3, .opc1 = 3, .opc2 = 0, .crn = 4, .crm = 2, | |
4126 | .access = PL0_RW, .type = ARM_CP_NZCV }, | |
c2b820fe PM |
4127 | { .name = "DAIF", .state = ARM_CP_STATE_AA64, |
4128 | .opc0 = 3, .opc1 = 3, .opc2 = 1, .crn = 4, .crm = 2, | |
7a0e58fa | 4129 | .type = ARM_CP_NO_RAW, |
c2b820fe PM |
4130 | .access = PL0_RW, .accessfn = aa64_daif_access, |
4131 | .fieldoffset = offsetof(CPUARMState, daif), | |
4132 | .writefn = aa64_daif_write, .resetfn = arm_cp_reset_ignore }, | |
b0d2b7d0 PM |
4133 | { .name = "FPCR", .state = ARM_CP_STATE_AA64, |
4134 | .opc0 = 3, .opc1 = 3, .opc2 = 0, .crn = 4, .crm = 4, | |
b916c9c3 | 4135 | .access = PL0_RW, .type = ARM_CP_FPU | ARM_CP_SUPPRESS_TB_END, |
fe03d45f | 4136 | .readfn = aa64_fpcr_read, .writefn = aa64_fpcr_write }, |
b0d2b7d0 PM |
4137 | { .name = "FPSR", .state = ARM_CP_STATE_AA64, |
4138 | .opc0 = 3, .opc1 = 3, .opc2 = 1, .crn = 4, .crm = 4, | |
b916c9c3 | 4139 | .access = PL0_RW, .type = ARM_CP_FPU | ARM_CP_SUPPRESS_TB_END, |
fe03d45f | 4140 | .readfn = aa64_fpsr_read, .writefn = aa64_fpsr_write }, |
b0d2b7d0 PM |
4141 | { .name = "DCZID_EL0", .state = ARM_CP_STATE_AA64, |
4142 | .opc0 = 3, .opc1 = 3, .opc2 = 7, .crn = 0, .crm = 0, | |
7a0e58fa | 4143 | .access = PL0_R, .type = ARM_CP_NO_RAW, |
aca3f40b PM |
4144 | .readfn = aa64_dczid_read }, |
4145 | { .name = "DC_ZVA", .state = ARM_CP_STATE_AA64, | |
4146 | .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 4, .opc2 = 1, | |
4147 | .access = PL0_W, .type = ARM_CP_DC_ZVA, | |
4148 | #ifndef CONFIG_USER_ONLY | |
4149 | /* Avoid overhead of an access check that always passes in user-mode */ | |
4150 | .accessfn = aa64_zva_access, | |
4151 | #endif | |
4152 | }, | |
0eef9d98 PM |
4153 | { .name = "CURRENTEL", .state = ARM_CP_STATE_AA64, |
4154 | .opc0 = 3, .opc1 = 0, .opc2 = 2, .crn = 4, .crm = 2, | |
4155 | .access = PL1_R, .type = ARM_CP_CURRENTEL }, | |
8af35c37 PM |
4156 | /* Cache ops: all NOPs since we don't emulate caches */ |
4157 | { .name = "IC_IALLUIS", .state = ARM_CP_STATE_AA64, | |
4158 | .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 0, | |
4159 | .access = PL1_W, .type = ARM_CP_NOP }, | |
4160 | { .name = "IC_IALLU", .state = ARM_CP_STATE_AA64, | |
4161 | .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 0, | |
4162 | .access = PL1_W, .type = ARM_CP_NOP }, | |
4163 | { .name = "IC_IVAU", .state = ARM_CP_STATE_AA64, | |
4164 | .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 5, .opc2 = 1, | |
4165 | .access = PL0_W, .type = ARM_CP_NOP, | |
4166 | .accessfn = aa64_cacheop_access }, | |
4167 | { .name = "DC_IVAC", .state = ARM_CP_STATE_AA64, | |
4168 | .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 1, | |
4169 | .access = PL1_W, .type = ARM_CP_NOP }, | |
4170 | { .name = "DC_ISW", .state = ARM_CP_STATE_AA64, | |
4171 | .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 2, | |
4172 | .access = PL1_W, .type = ARM_CP_NOP }, | |
4173 | { .name = "DC_CVAC", .state = ARM_CP_STATE_AA64, | |
4174 | .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 10, .opc2 = 1, | |
4175 | .access = PL0_W, .type = ARM_CP_NOP, | |
4176 | .accessfn = aa64_cacheop_access }, | |
4177 | { .name = "DC_CSW", .state = ARM_CP_STATE_AA64, | |
4178 | .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 2, | |
4179 | .access = PL1_W, .type = ARM_CP_NOP }, | |
4180 | { .name = "DC_CVAU", .state = ARM_CP_STATE_AA64, | |
4181 | .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 11, .opc2 = 1, | |
4182 | .access = PL0_W, .type = ARM_CP_NOP, | |
4183 | .accessfn = aa64_cacheop_access }, | |
4184 | { .name = "DC_CIVAC", .state = ARM_CP_STATE_AA64, | |
4185 | .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 14, .opc2 = 1, | |
4186 | .access = PL0_W, .type = ARM_CP_NOP, | |
4187 | .accessfn = aa64_cacheop_access }, | |
4188 | { .name = "DC_CISW", .state = ARM_CP_STATE_AA64, | |
4189 | .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 2, | |
4190 | .access = PL1_W, .type = ARM_CP_NOP }, | |
168aa23b PM |
4191 | /* TLBI operations */ |
4192 | { .name = "TLBI_VMALLE1IS", .state = ARM_CP_STATE_AA64, | |
6ab9f499 | 4193 | .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 0, |
7a0e58fa | 4194 | .access = PL1_W, .type = ARM_CP_NO_RAW, |
fd3ed969 | 4195 | .writefn = tlbi_aa64_vmalle1is_write }, |
168aa23b | 4196 | { .name = "TLBI_VAE1IS", .state = ARM_CP_STATE_AA64, |
6ab9f499 | 4197 | .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 1, |
7a0e58fa | 4198 | .access = PL1_W, .type = ARM_CP_NO_RAW, |
fd3ed969 | 4199 | .writefn = tlbi_aa64_vae1is_write }, |
168aa23b | 4200 | { .name = "TLBI_ASIDE1IS", .state = ARM_CP_STATE_AA64, |
6ab9f499 | 4201 | .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 2, |
7a0e58fa | 4202 | .access = PL1_W, .type = ARM_CP_NO_RAW, |
fd3ed969 | 4203 | .writefn = tlbi_aa64_vmalle1is_write }, |
168aa23b | 4204 | { .name = "TLBI_VAAE1IS", .state = ARM_CP_STATE_AA64, |
6ab9f499 | 4205 | .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 3, |
7a0e58fa | 4206 | .access = PL1_W, .type = ARM_CP_NO_RAW, |
fd3ed969 | 4207 | .writefn = tlbi_aa64_vae1is_write }, |
168aa23b | 4208 | { .name = "TLBI_VALE1IS", .state = ARM_CP_STATE_AA64, |
6ab9f499 | 4209 | .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 5, |
7a0e58fa | 4210 | .access = PL1_W, .type = ARM_CP_NO_RAW, |
fd3ed969 | 4211 | .writefn = tlbi_aa64_vae1is_write }, |
168aa23b | 4212 | { .name = "TLBI_VAALE1IS", .state = ARM_CP_STATE_AA64, |
6ab9f499 | 4213 | .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 7, |
7a0e58fa | 4214 | .access = PL1_W, .type = ARM_CP_NO_RAW, |
fd3ed969 | 4215 | .writefn = tlbi_aa64_vae1is_write }, |
168aa23b | 4216 | { .name = "TLBI_VMALLE1", .state = ARM_CP_STATE_AA64, |
6ab9f499 | 4217 | .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 0, |
7a0e58fa | 4218 | .access = PL1_W, .type = ARM_CP_NO_RAW, |
fd3ed969 | 4219 | .writefn = tlbi_aa64_vmalle1_write }, |
168aa23b | 4220 | { .name = "TLBI_VAE1", .state = ARM_CP_STATE_AA64, |
6ab9f499 | 4221 | .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 1, |
7a0e58fa | 4222 | .access = PL1_W, .type = ARM_CP_NO_RAW, |
fd3ed969 | 4223 | .writefn = tlbi_aa64_vae1_write }, |
168aa23b | 4224 | { .name = "TLBI_ASIDE1", .state = ARM_CP_STATE_AA64, |
6ab9f499 | 4225 | .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 2, |
7a0e58fa | 4226 | .access = PL1_W, .type = ARM_CP_NO_RAW, |
fd3ed969 | 4227 | .writefn = tlbi_aa64_vmalle1_write }, |
168aa23b | 4228 | { .name = "TLBI_VAAE1", .state = ARM_CP_STATE_AA64, |
6ab9f499 | 4229 | .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 3, |
7a0e58fa | 4230 | .access = PL1_W, .type = ARM_CP_NO_RAW, |
fd3ed969 | 4231 | .writefn = tlbi_aa64_vae1_write }, |
168aa23b | 4232 | { .name = "TLBI_VALE1", .state = ARM_CP_STATE_AA64, |
6ab9f499 | 4233 | .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 5, |
7a0e58fa | 4234 | .access = PL1_W, .type = ARM_CP_NO_RAW, |
fd3ed969 | 4235 | .writefn = tlbi_aa64_vae1_write }, |
168aa23b | 4236 | { .name = "TLBI_VAALE1", .state = ARM_CP_STATE_AA64, |
6ab9f499 | 4237 | .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 7, |
7a0e58fa | 4238 | .access = PL1_W, .type = ARM_CP_NO_RAW, |
fd3ed969 | 4239 | .writefn = tlbi_aa64_vae1_write }, |
cea66e91 PM |
4240 | { .name = "TLBI_IPAS2E1IS", .state = ARM_CP_STATE_AA64, |
4241 | .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 0, .opc2 = 1, | |
4242 | .access = PL2_W, .type = ARM_CP_NO_RAW, | |
4243 | .writefn = tlbi_aa64_ipas2e1is_write }, | |
4244 | { .name = "TLBI_IPAS2LE1IS", .state = ARM_CP_STATE_AA64, | |
4245 | .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 0, .opc2 = 5, | |
4246 | .access = PL2_W, .type = ARM_CP_NO_RAW, | |
4247 | .writefn = tlbi_aa64_ipas2e1is_write }, | |
83ddf975 PM |
4248 | { .name = "TLBI_ALLE1IS", .state = ARM_CP_STATE_AA64, |
4249 | .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 4, | |
4250 | .access = PL2_W, .type = ARM_CP_NO_RAW, | |
fd3ed969 | 4251 | .writefn = tlbi_aa64_alle1is_write }, |
43efaa33 PM |
4252 | { .name = "TLBI_VMALLS12E1IS", .state = ARM_CP_STATE_AA64, |
4253 | .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 6, | |
4254 | .access = PL2_W, .type = ARM_CP_NO_RAW, | |
4255 | .writefn = tlbi_aa64_alle1is_write }, | |
cea66e91 PM |
4256 | { .name = "TLBI_IPAS2E1", .state = ARM_CP_STATE_AA64, |
4257 | .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 4, .opc2 = 1, | |
4258 | .access = PL2_W, .type = ARM_CP_NO_RAW, | |
4259 | .writefn = tlbi_aa64_ipas2e1_write }, | |
4260 | { .name = "TLBI_IPAS2LE1", .state = ARM_CP_STATE_AA64, | |
4261 | .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 4, .opc2 = 5, | |
4262 | .access = PL2_W, .type = ARM_CP_NO_RAW, | |
4263 | .writefn = tlbi_aa64_ipas2e1_write }, | |
83ddf975 PM |
4264 | { .name = "TLBI_ALLE1", .state = ARM_CP_STATE_AA64, |
4265 | .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 4, | |
4266 | .access = PL2_W, .type = ARM_CP_NO_RAW, | |
fd3ed969 | 4267 | .writefn = tlbi_aa64_alle1_write }, |
43efaa33 PM |
4268 | { .name = "TLBI_VMALLS12E1", .state = ARM_CP_STATE_AA64, |
4269 | .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 6, | |
4270 | .access = PL2_W, .type = ARM_CP_NO_RAW, | |
4271 | .writefn = tlbi_aa64_alle1is_write }, | |
19525524 PM |
4272 | #ifndef CONFIG_USER_ONLY |
4273 | /* 64 bit address translation operations */ | |
4274 | { .name = "AT_S1E1R", .state = ARM_CP_STATE_AA64, | |
4275 | .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 0, | |
060e8a48 | 4276 | .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, |
19525524 PM |
4277 | { .name = "AT_S1E1W", .state = ARM_CP_STATE_AA64, |
4278 | .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 1, | |
060e8a48 | 4279 | .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, |
19525524 PM |
4280 | { .name = "AT_S1E0R", .state = ARM_CP_STATE_AA64, |
4281 | .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 2, | |
060e8a48 | 4282 | .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, |
19525524 PM |
4283 | { .name = "AT_S1E0W", .state = ARM_CP_STATE_AA64, |
4284 | .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 3, | |
060e8a48 | 4285 | .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, |
2a47df95 | 4286 | { .name = "AT_S12E1R", .state = ARM_CP_STATE_AA64, |
7a379c7e | 4287 | .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 4, |
2a47df95 PM |
4288 | .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, |
4289 | { .name = "AT_S12E1W", .state = ARM_CP_STATE_AA64, | |
7a379c7e | 4290 | .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 5, |
2a47df95 PM |
4291 | .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, |
4292 | { .name = "AT_S12E0R", .state = ARM_CP_STATE_AA64, | |
7a379c7e | 4293 | .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 6, |
2a47df95 PM |
4294 | .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, |
4295 | { .name = "AT_S12E0W", .state = ARM_CP_STATE_AA64, | |
7a379c7e | 4296 | .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 7, |
2a47df95 PM |
4297 | .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, |
4298 | /* AT S1E2* are elsewhere as they UNDEF from EL3 if EL2 is not present */ | |
4299 | { .name = "AT_S1E3R", .state = ARM_CP_STATE_AA64, | |
4300 | .opc0 = 1, .opc1 = 6, .crn = 7, .crm = 8, .opc2 = 0, | |
4301 | .access = PL3_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, | |
4302 | { .name = "AT_S1E3W", .state = ARM_CP_STATE_AA64, | |
4303 | .opc0 = 1, .opc1 = 6, .crn = 7, .crm = 8, .opc2 = 1, | |
4304 | .access = PL3_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, | |
c96fc9b5 EI |
4305 | { .name = "PAR_EL1", .state = ARM_CP_STATE_AA64, |
4306 | .type = ARM_CP_ALIAS, | |
4307 | .opc0 = 3, .opc1 = 0, .crn = 7, .crm = 4, .opc2 = 0, | |
4308 | .access = PL1_RW, .resetvalue = 0, | |
4309 | .fieldoffset = offsetof(CPUARMState, cp15.par_el[1]), | |
4310 | .writefn = par_write }, | |
19525524 | 4311 | #endif |
995939a6 | 4312 | /* TLB invalidate last level of translation table walk */ |
9449fdf6 | 4313 | { .name = "TLBIMVALIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 5, |
7a0e58fa | 4314 | .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_is_write }, |
9449fdf6 | 4315 | { .name = "TLBIMVAALIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 7, |
7a0e58fa | 4316 | .type = ARM_CP_NO_RAW, .access = PL1_W, |
fa439fc5 | 4317 | .writefn = tlbimvaa_is_write }, |
9449fdf6 | 4318 | { .name = "TLBIMVAL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 5, |
7a0e58fa | 4319 | .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write }, |
9449fdf6 | 4320 | { .name = "TLBIMVAAL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 7, |
7a0e58fa | 4321 | .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimvaa_write }, |
541ef8c2 SS |
4322 | { .name = "TLBIMVALH", .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 5, |
4323 | .type = ARM_CP_NO_RAW, .access = PL2_W, | |
4324 | .writefn = tlbimva_hyp_write }, | |
4325 | { .name = "TLBIMVALHIS", | |
4326 | .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 5, | |
4327 | .type = ARM_CP_NO_RAW, .access = PL2_W, | |
4328 | .writefn = tlbimva_hyp_is_write }, | |
4329 | { .name = "TLBIIPAS2", | |
4330 | .cp = 15, .opc1 = 4, .crn = 8, .crm = 4, .opc2 = 1, | |
4331 | .type = ARM_CP_NO_RAW, .access = PL2_W, | |
4332 | .writefn = tlbiipas2_write }, | |
4333 | { .name = "TLBIIPAS2IS", | |
4334 | .cp = 15, .opc1 = 4, .crn = 8, .crm = 0, .opc2 = 1, | |
4335 | .type = ARM_CP_NO_RAW, .access = PL2_W, | |
4336 | .writefn = tlbiipas2_is_write }, | |
4337 | { .name = "TLBIIPAS2L", | |
4338 | .cp = 15, .opc1 = 4, .crn = 8, .crm = 4, .opc2 = 5, | |
4339 | .type = ARM_CP_NO_RAW, .access = PL2_W, | |
4340 | .writefn = tlbiipas2_write }, | |
4341 | { .name = "TLBIIPAS2LIS", | |
4342 | .cp = 15, .opc1 = 4, .crn = 8, .crm = 0, .opc2 = 5, | |
4343 | .type = ARM_CP_NO_RAW, .access = PL2_W, | |
4344 | .writefn = tlbiipas2_is_write }, | |
9449fdf6 PM |
4345 | /* 32 bit cache operations */ |
4346 | { .name = "ICIALLUIS", .cp = 15, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 0, | |
4347 | .type = ARM_CP_NOP, .access = PL1_W }, | |
4348 | { .name = "BPIALLUIS", .cp = 15, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 6, | |
4349 | .type = ARM_CP_NOP, .access = PL1_W }, | |
4350 | { .name = "ICIALLU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 0, | |
4351 | .type = ARM_CP_NOP, .access = PL1_W }, | |
4352 | { .name = "ICIMVAU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 1, | |
4353 | .type = ARM_CP_NOP, .access = PL1_W }, | |
4354 | { .name = "BPIALL", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 6, | |
4355 | .type = ARM_CP_NOP, .access = PL1_W }, | |
4356 | { .name = "BPIMVA", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 7, | |
4357 | .type = ARM_CP_NOP, .access = PL1_W }, | |
4358 | { .name = "DCIMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 1, | |
4359 | .type = ARM_CP_NOP, .access = PL1_W }, | |
4360 | { .name = "DCISW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 2, | |
4361 | .type = ARM_CP_NOP, .access = PL1_W }, | |
4362 | { .name = "DCCMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 1, | |
4363 | .type = ARM_CP_NOP, .access = PL1_W }, | |
4364 | { .name = "DCCSW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 2, | |
4365 | .type = ARM_CP_NOP, .access = PL1_W }, | |
4366 | { .name = "DCCMVAU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 11, .opc2 = 1, | |
4367 | .type = ARM_CP_NOP, .access = PL1_W }, | |
4368 | { .name = "DCCIMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 1, | |
4369 | .type = ARM_CP_NOP, .access = PL1_W }, | |
4370 | { .name = "DCCISW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 2, | |
4371 | .type = ARM_CP_NOP, .access = PL1_W }, | |
4372 | /* MMU Domain access control / MPU write buffer control */ | |
0c17d68c FA |
4373 | { .name = "DACR", .cp = 15, .opc1 = 0, .crn = 3, .crm = 0, .opc2 = 0, |
4374 | .access = PL1_RW, .resetvalue = 0, | |
4375 | .writefn = dacr_write, .raw_writefn = raw_write, | |
4376 | .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.dacr_s), | |
4377 | offsetoflow32(CPUARMState, cp15.dacr_ns) } }, | |
a0618a19 | 4378 | { .name = "ELR_EL1", .state = ARM_CP_STATE_AA64, |
7a0e58fa | 4379 | .type = ARM_CP_ALIAS, |
a0618a19 | 4380 | .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 0, .opc2 = 1, |
6947f059 EI |
4381 | .access = PL1_RW, |
4382 | .fieldoffset = offsetof(CPUARMState, elr_el[1]) }, | |
a65f1de9 | 4383 | { .name = "SPSR_EL1", .state = ARM_CP_STATE_AA64, |
7a0e58fa | 4384 | .type = ARM_CP_ALIAS, |
a65f1de9 | 4385 | .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 0, .opc2 = 0, |
99a99c1f SB |
4386 | .access = PL1_RW, |
4387 | .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_SVC]) }, | |
f502cfc2 PM |
4388 | /* We rely on the access checks not allowing the guest to write to the |
4389 | * state field when SPSel indicates that it's being used as the stack | |
4390 | * pointer. | |
4391 | */ | |
4392 | { .name = "SP_EL0", .state = ARM_CP_STATE_AA64, | |
4393 | .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 1, .opc2 = 0, | |
4394 | .access = PL1_RW, .accessfn = sp_el0_access, | |
7a0e58fa | 4395 | .type = ARM_CP_ALIAS, |
f502cfc2 | 4396 | .fieldoffset = offsetof(CPUARMState, sp_el[0]) }, |
884b4dee GB |
4397 | { .name = "SP_EL1", .state = ARM_CP_STATE_AA64, |
4398 | .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 1, .opc2 = 0, | |
7a0e58fa | 4399 | .access = PL2_RW, .type = ARM_CP_ALIAS, |
884b4dee | 4400 | .fieldoffset = offsetof(CPUARMState, sp_el[1]) }, |
f502cfc2 PM |
4401 | { .name = "SPSel", .state = ARM_CP_STATE_AA64, |
4402 | .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 2, .opc2 = 0, | |
7a0e58fa | 4403 | .type = ARM_CP_NO_RAW, |
f502cfc2 | 4404 | .access = PL1_RW, .readfn = spsel_read, .writefn = spsel_write }, |
03fbf20f PM |
4405 | { .name = "FPEXC32_EL2", .state = ARM_CP_STATE_AA64, |
4406 | .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 3, .opc2 = 0, | |
4407 | .type = ARM_CP_ALIAS, | |
4408 | .fieldoffset = offsetof(CPUARMState, vfp.xregs[ARM_VFP_FPEXC]), | |
4409 | .access = PL2_RW, .accessfn = fpexc32_access }, | |
6a43e0b6 PM |
4410 | { .name = "DACR32_EL2", .state = ARM_CP_STATE_AA64, |
4411 | .opc0 = 3, .opc1 = 4, .crn = 3, .crm = 0, .opc2 = 0, | |
4412 | .access = PL2_RW, .resetvalue = 0, | |
4413 | .writefn = dacr_write, .raw_writefn = raw_write, | |
4414 | .fieldoffset = offsetof(CPUARMState, cp15.dacr32_el2) }, | |
4415 | { .name = "IFSR32_EL2", .state = ARM_CP_STATE_AA64, | |
4416 | .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 0, .opc2 = 1, | |
4417 | .access = PL2_RW, .resetvalue = 0, | |
4418 | .fieldoffset = offsetof(CPUARMState, cp15.ifsr32_el2) }, | |
4419 | { .name = "SPSR_IRQ", .state = ARM_CP_STATE_AA64, | |
4420 | .type = ARM_CP_ALIAS, | |
4421 | .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 3, .opc2 = 0, | |
4422 | .access = PL2_RW, | |
4423 | .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_IRQ]) }, | |
4424 | { .name = "SPSR_ABT", .state = ARM_CP_STATE_AA64, | |
4425 | .type = ARM_CP_ALIAS, | |
4426 | .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 3, .opc2 = 1, | |
4427 | .access = PL2_RW, | |
4428 | .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_ABT]) }, | |
4429 | { .name = "SPSR_UND", .state = ARM_CP_STATE_AA64, | |
4430 | .type = ARM_CP_ALIAS, | |
4431 | .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 3, .opc2 = 2, | |
4432 | .access = PL2_RW, | |
4433 | .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_UND]) }, | |
4434 | { .name = "SPSR_FIQ", .state = ARM_CP_STATE_AA64, | |
4435 | .type = ARM_CP_ALIAS, | |
4436 | .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 3, .opc2 = 3, | |
4437 | .access = PL2_RW, | |
4438 | .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_FIQ]) }, | |
a8d64e73 PM |
4439 | { .name = "MDCR_EL3", .state = ARM_CP_STATE_AA64, |
4440 | .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 3, .opc2 = 1, | |
4441 | .resetvalue = 0, | |
4442 | .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.mdcr_el3) }, | |
4443 | { .name = "SDCR", .type = ARM_CP_ALIAS, | |
4444 | .cp = 15, .opc1 = 0, .crn = 1, .crm = 3, .opc2 = 1, | |
4445 | .access = PL1_RW, .accessfn = access_trap_aa32s_el1, | |
4446 | .writefn = sdcr_write, | |
4447 | .fieldoffset = offsetoflow32(CPUARMState, cp15.mdcr_el3) }, | |
b0d2b7d0 PM |
4448 | REGINFO_SENTINEL |
4449 | }; | |
4450 | ||
d42e3c26 | 4451 | /* Used to describe the behaviour of EL2 regs when EL2 does not exist. */ |
4771cd01 | 4452 | static const ARMCPRegInfo el3_no_el2_cp_reginfo[] = { |
d79e0c06 | 4453 | { .name = "VBAR_EL2", .state = ARM_CP_STATE_BOTH, |
d42e3c26 EI |
4454 | .opc0 = 3, .opc1 = 4, .crn = 12, .crm = 0, .opc2 = 0, |
4455 | .access = PL2_RW, | |
4456 | .readfn = arm_cp_read_zero, .writefn = arm_cp_write_ignore }, | |
ce4afed8 | 4457 | { .name = "HCR_EL2", .state = ARM_CP_STATE_BOTH, |
7a0e58fa | 4458 | .type = ARM_CP_NO_RAW, |
f149e3e8 EI |
4459 | .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 0, |
4460 | .access = PL2_RW, | |
ce4afed8 | 4461 | .type = ARM_CP_CONST, .resetvalue = 0 }, |
831a2fca PM |
4462 | { .name = "HACR_EL2", .state = ARM_CP_STATE_BOTH, |
4463 | .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 7, | |
4464 | .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
68e78e33 PM |
4465 | { .name = "ESR_EL2", .state = ARM_CP_STATE_BOTH, |
4466 | .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 2, .opc2 = 0, | |
4467 | .access = PL2_RW, | |
4468 | .type = ARM_CP_CONST, .resetvalue = 0 }, | |
c6f19164 GB |
4469 | { .name = "CPTR_EL2", .state = ARM_CP_STATE_BOTH, |
4470 | .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 2, | |
4471 | .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
95f949ac EI |
4472 | { .name = "MAIR_EL2", .state = ARM_CP_STATE_BOTH, |
4473 | .opc0 = 3, .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 0, | |
4474 | .access = PL2_RW, .type = ARM_CP_CONST, | |
4475 | .resetvalue = 0 }, | |
4476 | { .name = "HMAIR1", .state = ARM_CP_STATE_AA32, | |
b5ede85b | 4477 | .cp = 15, .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 1, |
95f949ac | 4478 | .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, |
2179ef95 PM |
4479 | { .name = "AMAIR_EL2", .state = ARM_CP_STATE_BOTH, |
4480 | .opc0 = 3, .opc1 = 4, .crn = 10, .crm = 3, .opc2 = 0, | |
4481 | .access = PL2_RW, .type = ARM_CP_CONST, | |
4482 | .resetvalue = 0 }, | |
55b53c71 | 4483 | { .name = "HAMAIR1", .state = ARM_CP_STATE_AA32, |
b5ede85b | 4484 | .cp = 15, .opc1 = 4, .crn = 10, .crm = 3, .opc2 = 1, |
2179ef95 PM |
4485 | .access = PL2_RW, .type = ARM_CP_CONST, |
4486 | .resetvalue = 0 }, | |
37cd6c24 PM |
4487 | { .name = "AFSR0_EL2", .state = ARM_CP_STATE_BOTH, |
4488 | .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 1, .opc2 = 0, | |
4489 | .access = PL2_RW, .type = ARM_CP_CONST, | |
4490 | .resetvalue = 0 }, | |
4491 | { .name = "AFSR1_EL2", .state = ARM_CP_STATE_BOTH, | |
4492 | .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 1, .opc2 = 1, | |
4493 | .access = PL2_RW, .type = ARM_CP_CONST, | |
4494 | .resetvalue = 0 }, | |
06ec4c8c EI |
4495 | { .name = "TCR_EL2", .state = ARM_CP_STATE_BOTH, |
4496 | .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 2, | |
4497 | .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
68e9c2fe EI |
4498 | { .name = "VTCR_EL2", .state = ARM_CP_STATE_BOTH, |
4499 | .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 2, | |
4500 | .access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any, | |
4501 | .type = ARM_CP_CONST, .resetvalue = 0 }, | |
b698e9cf EI |
4502 | { .name = "VTTBR", .state = ARM_CP_STATE_AA32, |
4503 | .cp = 15, .opc1 = 6, .crm = 2, | |
4504 | .access = PL2_RW, .accessfn = access_el3_aa32ns, | |
4505 | .type = ARM_CP_CONST | ARM_CP_64BIT, .resetvalue = 0 }, | |
4506 | { .name = "VTTBR_EL2", .state = ARM_CP_STATE_AA64, | |
4507 | .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 0, | |
4508 | .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
b9cb5323 EI |
4509 | { .name = "SCTLR_EL2", .state = ARM_CP_STATE_BOTH, |
4510 | .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 0, .opc2 = 0, | |
4511 | .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
ff05f37b EI |
4512 | { .name = "TPIDR_EL2", .state = ARM_CP_STATE_BOTH, |
4513 | .opc0 = 3, .opc1 = 4, .crn = 13, .crm = 0, .opc2 = 2, | |
4514 | .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
a57633c0 EI |
4515 | { .name = "TTBR0_EL2", .state = ARM_CP_STATE_AA64, |
4516 | .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 0, | |
4517 | .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
4518 | { .name = "HTTBR", .cp = 15, .opc1 = 4, .crm = 2, | |
4519 | .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_CONST, | |
4520 | .resetvalue = 0 }, | |
0b6440af EI |
4521 | { .name = "CNTHCTL_EL2", .state = ARM_CP_STATE_BOTH, |
4522 | .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 1, .opc2 = 0, | |
4523 | .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
edac4d8a EI |
4524 | { .name = "CNTVOFF_EL2", .state = ARM_CP_STATE_AA64, |
4525 | .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 0, .opc2 = 3, | |
4526 | .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
4527 | { .name = "CNTVOFF", .cp = 15, .opc1 = 4, .crm = 14, | |
4528 | .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_CONST, | |
4529 | .resetvalue = 0 }, | |
b0e66d95 EI |
4530 | { .name = "CNTHP_CVAL_EL2", .state = ARM_CP_STATE_AA64, |
4531 | .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 2, | |
4532 | .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
4533 | { .name = "CNTHP_CVAL", .cp = 15, .opc1 = 6, .crm = 14, | |
4534 | .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_CONST, | |
4535 | .resetvalue = 0 }, | |
4536 | { .name = "CNTHP_TVAL_EL2", .state = ARM_CP_STATE_BOTH, | |
4537 | .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 0, | |
4538 | .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
4539 | { .name = "CNTHP_CTL_EL2", .state = ARM_CP_STATE_BOTH, | |
4540 | .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 1, | |
4541 | .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
14cc7b54 SF |
4542 | { .name = "MDCR_EL2", .state = ARM_CP_STATE_BOTH, |
4543 | .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 1, | |
d6c8cf81 PM |
4544 | .access = PL2_RW, .accessfn = access_tda, |
4545 | .type = ARM_CP_CONST, .resetvalue = 0 }, | |
59e05530 EI |
4546 | { .name = "HPFAR_EL2", .state = ARM_CP_STATE_BOTH, |
4547 | .opc0 = 3, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 4, | |
4548 | .access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any, | |
4549 | .type = ARM_CP_CONST, .resetvalue = 0 }, | |
2a5a9abd AF |
4550 | { .name = "HSTR_EL2", .state = ARM_CP_STATE_BOTH, |
4551 | .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 3, | |
4552 | .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
cba517c3 PM |
4553 | { .name = "FAR_EL2", .state = ARM_CP_STATE_BOTH, |
4554 | .opc0 = 3, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 0, | |
4555 | .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
4556 | { .name = "HIFAR", .state = ARM_CP_STATE_AA32, | |
4557 | .type = ARM_CP_CONST, | |
4558 | .cp = 15, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 2, | |
4559 | .access = PL2_RW, .resetvalue = 0 }, | |
d42e3c26 EI |
4560 | REGINFO_SENTINEL |
4561 | }; | |
4562 | ||
ce4afed8 PM |
4563 | /* Ditto, but for registers which exist in ARMv8 but not v7 */ |
4564 | static const ARMCPRegInfo el3_no_el2_v8_cp_reginfo[] = { | |
4565 | { .name = "HCR2", .state = ARM_CP_STATE_AA32, | |
4566 | .cp = 15, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 4, | |
4567 | .access = PL2_RW, | |
4568 | .type = ARM_CP_CONST, .resetvalue = 0 }, | |
4569 | REGINFO_SENTINEL | |
4570 | }; | |
4571 | ||
f149e3e8 EI |
4572 | static void hcr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) |
4573 | { | |
4574 | ARMCPU *cpu = arm_env_get_cpu(env); | |
4575 | uint64_t valid_mask = HCR_MASK; | |
4576 | ||
4577 | if (arm_feature(env, ARM_FEATURE_EL3)) { | |
4578 | valid_mask &= ~HCR_HCD; | |
77077a83 JK |
4579 | } else if (cpu->psci_conduit != QEMU_PSCI_CONDUIT_SMC) { |
4580 | /* Architecturally HCR.TSC is RES0 if EL3 is not implemented. | |
4581 | * However, if we're using the SMC PSCI conduit then QEMU is | |
4582 | * effectively acting like EL3 firmware and so the guest at | |
4583 | * EL2 should retain the ability to prevent EL1 from being | |
4584 | * able to make SMC calls into the ersatz firmware, so in | |
4585 | * that case HCR.TSC should be read/write. | |
4586 | */ | |
f149e3e8 EI |
4587 | valid_mask &= ~HCR_TSC; |
4588 | } | |
2d7137c1 RH |
4589 | if (cpu_isar_feature(aa64_lor, cpu)) { |
4590 | valid_mask |= HCR_TLOR; | |
4591 | } | |
ef682cdb RH |
4592 | if (cpu_isar_feature(aa64_pauth, cpu)) { |
4593 | valid_mask |= HCR_API | HCR_APK; | |
4594 | } | |
f149e3e8 EI |
4595 | |
4596 | /* Clear RES0 bits. */ | |
4597 | value &= valid_mask; | |
4598 | ||
4599 | /* These bits change the MMU setup: | |
4600 | * HCR_VM enables stage 2 translation | |
4601 | * HCR_PTW forbids certain page-table setups | |
4602 | * HCR_DC Disables stage1 and enables stage2 translation | |
4603 | */ | |
ce4afed8 | 4604 | if ((env->cp15.hcr_el2 ^ value) & (HCR_VM | HCR_PTW | HCR_DC)) { |
d10eb08f | 4605 | tlb_flush(CPU(cpu)); |
f149e3e8 | 4606 | } |
ce4afed8 | 4607 | env->cp15.hcr_el2 = value; |
89430fc6 PM |
4608 | |
4609 | /* | |
4610 | * Updates to VI and VF require us to update the status of | |
4611 | * virtual interrupts, which are the logical OR of these bits | |
4612 | * and the state of the input lines from the GIC. (This requires | |
4613 | * that we have the iothread lock, which is done by marking the | |
4614 | * reginfo structs as ARM_CP_IO.) | |
4615 | * Note that if a write to HCR pends a VIRQ or VFIQ it is never | |
4616 | * possible for it to be taken immediately, because VIRQ and | |
4617 | * VFIQ are masked unless running at EL0 or EL1, and HCR | |
4618 | * can only be written at EL2. | |
4619 | */ | |
4620 | g_assert(qemu_mutex_iothread_locked()); | |
4621 | arm_cpu_update_virq(cpu); | |
4622 | arm_cpu_update_vfiq(cpu); | |
ce4afed8 PM |
4623 | } |
4624 | ||
4625 | static void hcr_writehigh(CPUARMState *env, const ARMCPRegInfo *ri, | |
4626 | uint64_t value) | |
4627 | { | |
4628 | /* Handle HCR2 write, i.e. write to high half of HCR_EL2 */ | |
4629 | value = deposit64(env->cp15.hcr_el2, 32, 32, value); | |
4630 | hcr_write(env, NULL, value); | |
4631 | } | |
4632 | ||
4633 | static void hcr_writelow(CPUARMState *env, const ARMCPRegInfo *ri, | |
4634 | uint64_t value) | |
4635 | { | |
4636 | /* Handle HCR write, i.e. write to low half of HCR_EL2 */ | |
4637 | value = deposit64(env->cp15.hcr_el2, 0, 32, value); | |
4638 | hcr_write(env, NULL, value); | |
f149e3e8 EI |
4639 | } |
4640 | ||
f7778444 RH |
4641 | /* |
4642 | * Return the effective value of HCR_EL2. | |
4643 | * Bits that are not included here: | |
4644 | * RW (read from SCR_EL3.RW as needed) | |
4645 | */ | |
4646 | uint64_t arm_hcr_el2_eff(CPUARMState *env) | |
4647 | { | |
4648 | uint64_t ret = env->cp15.hcr_el2; | |
4649 | ||
4650 | if (arm_is_secure_below_el3(env)) { | |
4651 | /* | |
4652 | * "This register has no effect if EL2 is not enabled in the | |
4653 | * current Security state". This is ARMv8.4-SecEL2 speak for | |
4654 | * !(SCR_EL3.NS==1 || SCR_EL3.EEL2==1). | |
4655 | * | |
4656 | * Prior to that, the language was "In an implementation that | |
4657 | * includes EL3, when the value of SCR_EL3.NS is 0 the PE behaves | |
4658 | * as if this field is 0 for all purposes other than a direct | |
4659 | * read or write access of HCR_EL2". With lots of enumeration | |
4660 | * on a per-field basis. In current QEMU, this is condition | |
4661 | * is arm_is_secure_below_el3. | |
4662 | * | |
4663 | * Since the v8.4 language applies to the entire register, and | |
4664 | * appears to be backward compatible, use that. | |
4665 | */ | |
4666 | ret = 0; | |
4667 | } else if (ret & HCR_TGE) { | |
4668 | /* These bits are up-to-date as of ARMv8.4. */ | |
4669 | if (ret & HCR_E2H) { | |
4670 | ret &= ~(HCR_VM | HCR_FMO | HCR_IMO | HCR_AMO | | |
4671 | HCR_BSU_MASK | HCR_DC | HCR_TWI | HCR_TWE | | |
4672 | HCR_TID0 | HCR_TID2 | HCR_TPCP | HCR_TPU | | |
4673 | HCR_TDZ | HCR_CD | HCR_ID | HCR_MIOCNCE); | |
4674 | } else { | |
4675 | ret |= HCR_FMO | HCR_IMO | HCR_AMO; | |
4676 | } | |
4677 | ret &= ~(HCR_SWIO | HCR_PTW | HCR_VF | HCR_VI | HCR_VSE | | |
4678 | HCR_FB | HCR_TID1 | HCR_TID3 | HCR_TSC | HCR_TACR | | |
4679 | HCR_TSW | HCR_TTLB | HCR_TVM | HCR_HCD | HCR_TRVM | | |
4680 | HCR_TLOR); | |
4681 | } | |
4682 | ||
4683 | return ret; | |
4684 | } | |
4685 | ||
4771cd01 | 4686 | static const ARMCPRegInfo el2_cp_reginfo[] = { |
f149e3e8 | 4687 | { .name = "HCR_EL2", .state = ARM_CP_STATE_AA64, |
89430fc6 | 4688 | .type = ARM_CP_IO, |
f149e3e8 EI |
4689 | .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 0, |
4690 | .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.hcr_el2), | |
c624ea0f | 4691 | .writefn = hcr_write }, |
ce4afed8 | 4692 | { .name = "HCR", .state = ARM_CP_STATE_AA32, |
89430fc6 | 4693 | .type = ARM_CP_ALIAS | ARM_CP_IO, |
ce4afed8 PM |
4694 | .cp = 15, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 0, |
4695 | .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.hcr_el2), | |
c624ea0f | 4696 | .writefn = hcr_writelow }, |
831a2fca PM |
4697 | { .name = "HACR_EL2", .state = ARM_CP_STATE_BOTH, |
4698 | .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 7, | |
4699 | .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
3b685ba7 | 4700 | { .name = "ELR_EL2", .state = ARM_CP_STATE_AA64, |
7a0e58fa | 4701 | .type = ARM_CP_ALIAS, |
3b685ba7 EI |
4702 | .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 0, .opc2 = 1, |
4703 | .access = PL2_RW, | |
4704 | .fieldoffset = offsetof(CPUARMState, elr_el[2]) }, | |
68e78e33 | 4705 | { .name = "ESR_EL2", .state = ARM_CP_STATE_BOTH, |
f2c30f42 EI |
4706 | .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 2, .opc2 = 0, |
4707 | .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.esr_el[2]) }, | |
cba517c3 | 4708 | { .name = "FAR_EL2", .state = ARM_CP_STATE_BOTH, |
63b60551 EI |
4709 | .opc0 = 3, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 0, |
4710 | .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.far_el[2]) }, | |
cba517c3 PM |
4711 | { .name = "HIFAR", .state = ARM_CP_STATE_AA32, |
4712 | .type = ARM_CP_ALIAS, | |
4713 | .cp = 15, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 2, | |
4714 | .access = PL2_RW, | |
4715 | .fieldoffset = offsetofhigh32(CPUARMState, cp15.far_el[2]) }, | |
3b685ba7 | 4716 | { .name = "SPSR_EL2", .state = ARM_CP_STATE_AA64, |
7a0e58fa | 4717 | .type = ARM_CP_ALIAS, |
3b685ba7 | 4718 | .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 0, .opc2 = 0, |
99a99c1f SB |
4719 | .access = PL2_RW, |
4720 | .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_HYP]) }, | |
d79e0c06 | 4721 | { .name = "VBAR_EL2", .state = ARM_CP_STATE_BOTH, |
d42e3c26 EI |
4722 | .opc0 = 3, .opc1 = 4, .crn = 12, .crm = 0, .opc2 = 0, |
4723 | .access = PL2_RW, .writefn = vbar_write, | |
4724 | .fieldoffset = offsetof(CPUARMState, cp15.vbar_el[2]), | |
4725 | .resetvalue = 0 }, | |
884b4dee GB |
4726 | { .name = "SP_EL2", .state = ARM_CP_STATE_AA64, |
4727 | .opc0 = 3, .opc1 = 6, .crn = 4, .crm = 1, .opc2 = 0, | |
7a0e58fa | 4728 | .access = PL3_RW, .type = ARM_CP_ALIAS, |
884b4dee | 4729 | .fieldoffset = offsetof(CPUARMState, sp_el[2]) }, |
c6f19164 GB |
4730 | { .name = "CPTR_EL2", .state = ARM_CP_STATE_BOTH, |
4731 | .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 2, | |
4732 | .access = PL2_RW, .accessfn = cptr_access, .resetvalue = 0, | |
4733 | .fieldoffset = offsetof(CPUARMState, cp15.cptr_el[2]) }, | |
95f949ac EI |
4734 | { .name = "MAIR_EL2", .state = ARM_CP_STATE_BOTH, |
4735 | .opc0 = 3, .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 0, | |
4736 | .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[2]), | |
4737 | .resetvalue = 0 }, | |
4738 | { .name = "HMAIR1", .state = ARM_CP_STATE_AA32, | |
b5ede85b | 4739 | .cp = 15, .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 1, |
95f949ac EI |
4740 | .access = PL2_RW, .type = ARM_CP_ALIAS, |
4741 | .fieldoffset = offsetofhigh32(CPUARMState, cp15.mair_el[2]) }, | |
2179ef95 PM |
4742 | { .name = "AMAIR_EL2", .state = ARM_CP_STATE_BOTH, |
4743 | .opc0 = 3, .opc1 = 4, .crn = 10, .crm = 3, .opc2 = 0, | |
4744 | .access = PL2_RW, .type = ARM_CP_CONST, | |
4745 | .resetvalue = 0 }, | |
4746 | /* HAMAIR1 is mapped to AMAIR_EL2[63:32] */ | |
55b53c71 | 4747 | { .name = "HAMAIR1", .state = ARM_CP_STATE_AA32, |
b5ede85b | 4748 | .cp = 15, .opc1 = 4, .crn = 10, .crm = 3, .opc2 = 1, |
2179ef95 PM |
4749 | .access = PL2_RW, .type = ARM_CP_CONST, |
4750 | .resetvalue = 0 }, | |
37cd6c24 PM |
4751 | { .name = "AFSR0_EL2", .state = ARM_CP_STATE_BOTH, |
4752 | .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 1, .opc2 = 0, | |
4753 | .access = PL2_RW, .type = ARM_CP_CONST, | |
4754 | .resetvalue = 0 }, | |
4755 | { .name = "AFSR1_EL2", .state = ARM_CP_STATE_BOTH, | |
4756 | .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 1, .opc2 = 1, | |
4757 | .access = PL2_RW, .type = ARM_CP_CONST, | |
4758 | .resetvalue = 0 }, | |
06ec4c8c EI |
4759 | { .name = "TCR_EL2", .state = ARM_CP_STATE_BOTH, |
4760 | .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 2, | |
6459b94c PM |
4761 | .access = PL2_RW, |
4762 | /* no .writefn needed as this can't cause an ASID change; | |
4763 | * no .raw_writefn or .resetfn needed as we never use mask/base_mask | |
4764 | */ | |
06ec4c8c | 4765 | .fieldoffset = offsetof(CPUARMState, cp15.tcr_el[2]) }, |
68e9c2fe EI |
4766 | { .name = "VTCR", .state = ARM_CP_STATE_AA32, |
4767 | .cp = 15, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 2, | |
bf06c112 | 4768 | .type = ARM_CP_ALIAS, |
68e9c2fe EI |
4769 | .access = PL2_RW, .accessfn = access_el3_aa32ns, |
4770 | .fieldoffset = offsetof(CPUARMState, cp15.vtcr_el2) }, | |
4771 | { .name = "VTCR_EL2", .state = ARM_CP_STATE_AA64, | |
4772 | .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 2, | |
bf06c112 PM |
4773 | .access = PL2_RW, |
4774 | /* no .writefn needed as this can't cause an ASID change; | |
4775 | * no .raw_writefn or .resetfn needed as we never use mask/base_mask | |
4776 | */ | |
68e9c2fe | 4777 | .fieldoffset = offsetof(CPUARMState, cp15.vtcr_el2) }, |
b698e9cf EI |
4778 | { .name = "VTTBR", .state = ARM_CP_STATE_AA32, |
4779 | .cp = 15, .opc1 = 6, .crm = 2, | |
4780 | .type = ARM_CP_64BIT | ARM_CP_ALIAS, | |
4781 | .access = PL2_RW, .accessfn = access_el3_aa32ns, | |
4782 | .fieldoffset = offsetof(CPUARMState, cp15.vttbr_el2), | |
4783 | .writefn = vttbr_write }, | |
4784 | { .name = "VTTBR_EL2", .state = ARM_CP_STATE_AA64, | |
4785 | .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 0, | |
4786 | .access = PL2_RW, .writefn = vttbr_write, | |
4787 | .fieldoffset = offsetof(CPUARMState, cp15.vttbr_el2) }, | |
b9cb5323 EI |
4788 | { .name = "SCTLR_EL2", .state = ARM_CP_STATE_BOTH, |
4789 | .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 0, .opc2 = 0, | |
4790 | .access = PL2_RW, .raw_writefn = raw_write, .writefn = sctlr_write, | |
4791 | .fieldoffset = offsetof(CPUARMState, cp15.sctlr_el[2]) }, | |
ff05f37b EI |
4792 | { .name = "TPIDR_EL2", .state = ARM_CP_STATE_BOTH, |
4793 | .opc0 = 3, .opc1 = 4, .crn = 13, .crm = 0, .opc2 = 2, | |
4794 | .access = PL2_RW, .resetvalue = 0, | |
4795 | .fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[2]) }, | |
a57633c0 EI |
4796 | { .name = "TTBR0_EL2", .state = ARM_CP_STATE_AA64, |
4797 | .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 0, | |
4798 | .access = PL2_RW, .resetvalue = 0, | |
4799 | .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[2]) }, | |
4800 | { .name = "HTTBR", .cp = 15, .opc1 = 4, .crm = 2, | |
4801 | .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS, | |
a57633c0 | 4802 | .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[2]) }, |
541ef8c2 SS |
4803 | { .name = "TLBIALLNSNH", |
4804 | .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 4, | |
4805 | .type = ARM_CP_NO_RAW, .access = PL2_W, | |
4806 | .writefn = tlbiall_nsnh_write }, | |
4807 | { .name = "TLBIALLNSNHIS", | |
4808 | .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 4, | |
4809 | .type = ARM_CP_NO_RAW, .access = PL2_W, | |
4810 | .writefn = tlbiall_nsnh_is_write }, | |
4811 | { .name = "TLBIALLH", .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 0, | |
4812 | .type = ARM_CP_NO_RAW, .access = PL2_W, | |
4813 | .writefn = tlbiall_hyp_write }, | |
4814 | { .name = "TLBIALLHIS", .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 0, | |
4815 | .type = ARM_CP_NO_RAW, .access = PL2_W, | |
4816 | .writefn = tlbiall_hyp_is_write }, | |
4817 | { .name = "TLBIMVAH", .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 1, | |
4818 | .type = ARM_CP_NO_RAW, .access = PL2_W, | |
4819 | .writefn = tlbimva_hyp_write }, | |
4820 | { .name = "TLBIMVAHIS", .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 1, | |
4821 | .type = ARM_CP_NO_RAW, .access = PL2_W, | |
4822 | .writefn = tlbimva_hyp_is_write }, | |
51da9014 EI |
4823 | { .name = "TLBI_ALLE2", .state = ARM_CP_STATE_AA64, |
4824 | .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 0, | |
4825 | .type = ARM_CP_NO_RAW, .access = PL2_W, | |
fd3ed969 | 4826 | .writefn = tlbi_aa64_alle2_write }, |
8742d49d EI |
4827 | { .name = "TLBI_VAE2", .state = ARM_CP_STATE_AA64, |
4828 | .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 1, | |
4829 | .type = ARM_CP_NO_RAW, .access = PL2_W, | |
fd3ed969 | 4830 | .writefn = tlbi_aa64_vae2_write }, |
2bfb9d75 PM |
4831 | { .name = "TLBI_VALE2", .state = ARM_CP_STATE_AA64, |
4832 | .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 5, | |
4833 | .access = PL2_W, .type = ARM_CP_NO_RAW, | |
4834 | .writefn = tlbi_aa64_vae2_write }, | |
4835 | { .name = "TLBI_ALLE2IS", .state = ARM_CP_STATE_AA64, | |
4836 | .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 0, | |
4837 | .access = PL2_W, .type = ARM_CP_NO_RAW, | |
4838 | .writefn = tlbi_aa64_alle2is_write }, | |
8742d49d EI |
4839 | { .name = "TLBI_VAE2IS", .state = ARM_CP_STATE_AA64, |
4840 | .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 1, | |
4841 | .type = ARM_CP_NO_RAW, .access = PL2_W, | |
fd3ed969 | 4842 | .writefn = tlbi_aa64_vae2is_write }, |
2bfb9d75 PM |
4843 | { .name = "TLBI_VALE2IS", .state = ARM_CP_STATE_AA64, |
4844 | .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 5, | |
4845 | .access = PL2_W, .type = ARM_CP_NO_RAW, | |
4846 | .writefn = tlbi_aa64_vae2is_write }, | |
edac4d8a | 4847 | #ifndef CONFIG_USER_ONLY |
2a47df95 PM |
4848 | /* Unlike the other EL2-related AT operations, these must |
4849 | * UNDEF from EL3 if EL2 is not implemented, which is why we | |
4850 | * define them here rather than with the rest of the AT ops. | |
4851 | */ | |
4852 | { .name = "AT_S1E2R", .state = ARM_CP_STATE_AA64, | |
4853 | .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 0, | |
4854 | .access = PL2_W, .accessfn = at_s1e2_access, | |
4855 | .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, | |
4856 | { .name = "AT_S1E2W", .state = ARM_CP_STATE_AA64, | |
4857 | .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 1, | |
4858 | .access = PL2_W, .accessfn = at_s1e2_access, | |
4859 | .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, | |
14db7fe0 PM |
4860 | /* The AArch32 ATS1H* operations are CONSTRAINED UNPREDICTABLE |
4861 | * if EL2 is not implemented; we choose to UNDEF. Behaviour at EL3 | |
4862 | * with SCR.NS == 0 outside Monitor mode is UNPREDICTABLE; we choose | |
4863 | * to behave as if SCR.NS was 1. | |
4864 | */ | |
4865 | { .name = "ATS1HR", .cp = 15, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 0, | |
4866 | .access = PL2_W, | |
4867 | .writefn = ats1h_write, .type = ARM_CP_NO_RAW }, | |
4868 | { .name = "ATS1HW", .cp = 15, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 1, | |
4869 | .access = PL2_W, | |
4870 | .writefn = ats1h_write, .type = ARM_CP_NO_RAW }, | |
0b6440af EI |
4871 | { .name = "CNTHCTL_EL2", .state = ARM_CP_STATE_BOTH, |
4872 | .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 1, .opc2 = 0, | |
4873 | /* ARMv7 requires bit 0 and 1 to reset to 1. ARMv8 defines the | |
4874 | * reset values as IMPDEF. We choose to reset to 3 to comply with | |
4875 | * both ARMv7 and ARMv8. | |
4876 | */ | |
4877 | .access = PL2_RW, .resetvalue = 3, | |
4878 | .fieldoffset = offsetof(CPUARMState, cp15.cnthctl_el2) }, | |
edac4d8a EI |
4879 | { .name = "CNTVOFF_EL2", .state = ARM_CP_STATE_AA64, |
4880 | .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 0, .opc2 = 3, | |
4881 | .access = PL2_RW, .type = ARM_CP_IO, .resetvalue = 0, | |
4882 | .writefn = gt_cntvoff_write, | |
4883 | .fieldoffset = offsetof(CPUARMState, cp15.cntvoff_el2) }, | |
4884 | { .name = "CNTVOFF", .cp = 15, .opc1 = 4, .crm = 14, | |
4885 | .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS | ARM_CP_IO, | |
4886 | .writefn = gt_cntvoff_write, | |
4887 | .fieldoffset = offsetof(CPUARMState, cp15.cntvoff_el2) }, | |
b0e66d95 EI |
4888 | { .name = "CNTHP_CVAL_EL2", .state = ARM_CP_STATE_AA64, |
4889 | .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 2, | |
4890 | .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_HYP].cval), | |
4891 | .type = ARM_CP_IO, .access = PL2_RW, | |
4892 | .writefn = gt_hyp_cval_write, .raw_writefn = raw_write }, | |
4893 | { .name = "CNTHP_CVAL", .cp = 15, .opc1 = 6, .crm = 14, | |
4894 | .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_HYP].cval), | |
4895 | .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_IO, | |
4896 | .writefn = gt_hyp_cval_write, .raw_writefn = raw_write }, | |
4897 | { .name = "CNTHP_TVAL_EL2", .state = ARM_CP_STATE_BOTH, | |
4898 | .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 0, | |
d44ec156 | 4899 | .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL2_RW, |
b0e66d95 EI |
4900 | .resetfn = gt_hyp_timer_reset, |
4901 | .readfn = gt_hyp_tval_read, .writefn = gt_hyp_tval_write }, | |
4902 | { .name = "CNTHP_CTL_EL2", .state = ARM_CP_STATE_BOTH, | |
4903 | .type = ARM_CP_IO, | |
4904 | .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 1, | |
4905 | .access = PL2_RW, | |
4906 | .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_HYP].ctl), | |
4907 | .resetvalue = 0, | |
4908 | .writefn = gt_hyp_ctl_write, .raw_writefn = raw_write }, | |
edac4d8a | 4909 | #endif |
14cc7b54 SF |
4910 | /* The only field of MDCR_EL2 that has a defined architectural reset value |
4911 | * is MDCR_EL2.HPMN which should reset to the value of PMCR_EL0.N; but we | |
5ecdd3e4 | 4912 | * don't implement any PMU event counters, so using zero as a reset |
14cc7b54 SF |
4913 | * value for MDCR_EL2 is okay |
4914 | */ | |
4915 | { .name = "MDCR_EL2", .state = ARM_CP_STATE_BOTH, | |
4916 | .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 1, | |
4917 | .access = PL2_RW, .resetvalue = 0, | |
4918 | .fieldoffset = offsetof(CPUARMState, cp15.mdcr_el2), }, | |
59e05530 EI |
4919 | { .name = "HPFAR", .state = ARM_CP_STATE_AA32, |
4920 | .cp = 15, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 4, | |
4921 | .access = PL2_RW, .accessfn = access_el3_aa32ns, | |
4922 | .fieldoffset = offsetof(CPUARMState, cp15.hpfar_el2) }, | |
4923 | { .name = "HPFAR_EL2", .state = ARM_CP_STATE_AA64, | |
4924 | .opc0 = 3, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 4, | |
4925 | .access = PL2_RW, | |
4926 | .fieldoffset = offsetof(CPUARMState, cp15.hpfar_el2) }, | |
2a5a9abd AF |
4927 | { .name = "HSTR_EL2", .state = ARM_CP_STATE_BOTH, |
4928 | .cp = 15, .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 3, | |
4929 | .access = PL2_RW, | |
4930 | .fieldoffset = offsetof(CPUARMState, cp15.hstr_el2) }, | |
3b685ba7 EI |
4931 | REGINFO_SENTINEL |
4932 | }; | |
4933 | ||
ce4afed8 PM |
4934 | static const ARMCPRegInfo el2_v8_cp_reginfo[] = { |
4935 | { .name = "HCR2", .state = ARM_CP_STATE_AA32, | |
89430fc6 | 4936 | .type = ARM_CP_ALIAS | ARM_CP_IO, |
ce4afed8 PM |
4937 | .cp = 15, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 4, |
4938 | .access = PL2_RW, | |
4939 | .fieldoffset = offsetofhigh32(CPUARMState, cp15.hcr_el2), | |
4940 | .writefn = hcr_writehigh }, | |
4941 | REGINFO_SENTINEL | |
4942 | }; | |
4943 | ||
2f027fc5 PM |
4944 | static CPAccessResult nsacr_access(CPUARMState *env, const ARMCPRegInfo *ri, |
4945 | bool isread) | |
4946 | { | |
4947 | /* The NSACR is RW at EL3, and RO for NS EL1 and NS EL2. | |
4948 | * At Secure EL1 it traps to EL3. | |
4949 | */ | |
4950 | if (arm_current_el(env) == 3) { | |
4951 | return CP_ACCESS_OK; | |
4952 | } | |
4953 | if (arm_is_secure_below_el3(env)) { | |
4954 | return CP_ACCESS_TRAP_EL3; | |
4955 | } | |
4956 | /* Accesses from EL1 NS and EL2 NS are UNDEF for write but allow reads. */ | |
4957 | if (isread) { | |
4958 | return CP_ACCESS_OK; | |
4959 | } | |
4960 | return CP_ACCESS_TRAP_UNCATEGORIZED; | |
4961 | } | |
4962 | ||
60fb1a87 GB |
4963 | static const ARMCPRegInfo el3_cp_reginfo[] = { |
4964 | { .name = "SCR_EL3", .state = ARM_CP_STATE_AA64, | |
4965 | .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 1, .opc2 = 0, | |
4966 | .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.scr_el3), | |
4967 | .resetvalue = 0, .writefn = scr_write }, | |
7a0e58fa | 4968 | { .name = "SCR", .type = ARM_CP_ALIAS, |
60fb1a87 | 4969 | .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 0, |
efe4a274 PM |
4970 | .access = PL1_RW, .accessfn = access_trap_aa32s_el1, |
4971 | .fieldoffset = offsetoflow32(CPUARMState, cp15.scr_el3), | |
b061a82b | 4972 | .writefn = scr_write }, |
60fb1a87 GB |
4973 | { .name = "SDER32_EL3", .state = ARM_CP_STATE_AA64, |
4974 | .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 1, .opc2 = 1, | |
4975 | .access = PL3_RW, .resetvalue = 0, | |
4976 | .fieldoffset = offsetof(CPUARMState, cp15.sder) }, | |
4977 | { .name = "SDER", | |
4978 | .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 1, | |
4979 | .access = PL3_RW, .resetvalue = 0, | |
4980 | .fieldoffset = offsetoflow32(CPUARMState, cp15.sder) }, | |
60fb1a87 | 4981 | { .name = "MVBAR", .cp = 15, .opc1 = 0, .crn = 12, .crm = 0, .opc2 = 1, |
efe4a274 PM |
4982 | .access = PL1_RW, .accessfn = access_trap_aa32s_el1, |
4983 | .writefn = vbar_write, .resetvalue = 0, | |
60fb1a87 | 4984 | .fieldoffset = offsetof(CPUARMState, cp15.mvbar) }, |
7dd8c9af FA |
4985 | { .name = "TTBR0_EL3", .state = ARM_CP_STATE_AA64, |
4986 | .opc0 = 3, .opc1 = 6, .crn = 2, .crm = 0, .opc2 = 0, | |
f478847f | 4987 | .access = PL3_RW, .resetvalue = 0, |
7dd8c9af | 4988 | .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[3]) }, |
11f136ee FA |
4989 | { .name = "TCR_EL3", .state = ARM_CP_STATE_AA64, |
4990 | .opc0 = 3, .opc1 = 6, .crn = 2, .crm = 0, .opc2 = 2, | |
6459b94c PM |
4991 | .access = PL3_RW, |
4992 | /* no .writefn needed as this can't cause an ASID change; | |
811595a2 PM |
4993 | * we must provide a .raw_writefn and .resetfn because we handle |
4994 | * reset and migration for the AArch32 TTBCR(S), which might be | |
4995 | * using mask and base_mask. | |
6459b94c | 4996 | */ |
811595a2 | 4997 | .resetfn = vmsa_ttbcr_reset, .raw_writefn = vmsa_ttbcr_raw_write, |
11f136ee | 4998 | .fieldoffset = offsetof(CPUARMState, cp15.tcr_el[3]) }, |
81547d66 | 4999 | { .name = "ELR_EL3", .state = ARM_CP_STATE_AA64, |
7a0e58fa | 5000 | .type = ARM_CP_ALIAS, |
81547d66 EI |
5001 | .opc0 = 3, .opc1 = 6, .crn = 4, .crm = 0, .opc2 = 1, |
5002 | .access = PL3_RW, | |
5003 | .fieldoffset = offsetof(CPUARMState, elr_el[3]) }, | |
f2c30f42 | 5004 | { .name = "ESR_EL3", .state = ARM_CP_STATE_AA64, |
f2c30f42 EI |
5005 | .opc0 = 3, .opc1 = 6, .crn = 5, .crm = 2, .opc2 = 0, |
5006 | .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.esr_el[3]) }, | |
63b60551 EI |
5007 | { .name = "FAR_EL3", .state = ARM_CP_STATE_AA64, |
5008 | .opc0 = 3, .opc1 = 6, .crn = 6, .crm = 0, .opc2 = 0, | |
5009 | .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.far_el[3]) }, | |
81547d66 | 5010 | { .name = "SPSR_EL3", .state = ARM_CP_STATE_AA64, |
7a0e58fa | 5011 | .type = ARM_CP_ALIAS, |
81547d66 | 5012 | .opc0 = 3, .opc1 = 6, .crn = 4, .crm = 0, .opc2 = 0, |
99a99c1f SB |
5013 | .access = PL3_RW, |
5014 | .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_MON]) }, | |
a1ba125c EI |
5015 | { .name = "VBAR_EL3", .state = ARM_CP_STATE_AA64, |
5016 | .opc0 = 3, .opc1 = 6, .crn = 12, .crm = 0, .opc2 = 0, | |
5017 | .access = PL3_RW, .writefn = vbar_write, | |
5018 | .fieldoffset = offsetof(CPUARMState, cp15.vbar_el[3]), | |
5019 | .resetvalue = 0 }, | |
c6f19164 GB |
5020 | { .name = "CPTR_EL3", .state = ARM_CP_STATE_AA64, |
5021 | .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 1, .opc2 = 2, | |
5022 | .access = PL3_RW, .accessfn = cptr_access, .resetvalue = 0, | |
5023 | .fieldoffset = offsetof(CPUARMState, cp15.cptr_el[3]) }, | |
4cfb8ad8 PM |
5024 | { .name = "TPIDR_EL3", .state = ARM_CP_STATE_AA64, |
5025 | .opc0 = 3, .opc1 = 6, .crn = 13, .crm = 0, .opc2 = 2, | |
5026 | .access = PL3_RW, .resetvalue = 0, | |
5027 | .fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[3]) }, | |
2179ef95 PM |
5028 | { .name = "AMAIR_EL3", .state = ARM_CP_STATE_AA64, |
5029 | .opc0 = 3, .opc1 = 6, .crn = 10, .crm = 3, .opc2 = 0, | |
5030 | .access = PL3_RW, .type = ARM_CP_CONST, | |
5031 | .resetvalue = 0 }, | |
37cd6c24 PM |
5032 | { .name = "AFSR0_EL3", .state = ARM_CP_STATE_BOTH, |
5033 | .opc0 = 3, .opc1 = 6, .crn = 5, .crm = 1, .opc2 = 0, | |
5034 | .access = PL3_RW, .type = ARM_CP_CONST, | |
5035 | .resetvalue = 0 }, | |
5036 | { .name = "AFSR1_EL3", .state = ARM_CP_STATE_BOTH, | |
5037 | .opc0 = 3, .opc1 = 6, .crn = 5, .crm = 1, .opc2 = 1, | |
5038 | .access = PL3_RW, .type = ARM_CP_CONST, | |
5039 | .resetvalue = 0 }, | |
43efaa33 PM |
5040 | { .name = "TLBI_ALLE3IS", .state = ARM_CP_STATE_AA64, |
5041 | .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 3, .opc2 = 0, | |
5042 | .access = PL3_W, .type = ARM_CP_NO_RAW, | |
5043 | .writefn = tlbi_aa64_alle3is_write }, | |
5044 | { .name = "TLBI_VAE3IS", .state = ARM_CP_STATE_AA64, | |
5045 | .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 3, .opc2 = 1, | |
5046 | .access = PL3_W, .type = ARM_CP_NO_RAW, | |
5047 | .writefn = tlbi_aa64_vae3is_write }, | |
5048 | { .name = "TLBI_VALE3IS", .state = ARM_CP_STATE_AA64, | |
5049 | .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 3, .opc2 = 5, | |
5050 | .access = PL3_W, .type = ARM_CP_NO_RAW, | |
5051 | .writefn = tlbi_aa64_vae3is_write }, | |
5052 | { .name = "TLBI_ALLE3", .state = ARM_CP_STATE_AA64, | |
5053 | .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 7, .opc2 = 0, | |
5054 | .access = PL3_W, .type = ARM_CP_NO_RAW, | |
5055 | .writefn = tlbi_aa64_alle3_write }, | |
5056 | { .name = "TLBI_VAE3", .state = ARM_CP_STATE_AA64, | |
5057 | .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 7, .opc2 = 1, | |
5058 | .access = PL3_W, .type = ARM_CP_NO_RAW, | |
5059 | .writefn = tlbi_aa64_vae3_write }, | |
5060 | { .name = "TLBI_VALE3", .state = ARM_CP_STATE_AA64, | |
5061 | .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 7, .opc2 = 5, | |
5062 | .access = PL3_W, .type = ARM_CP_NO_RAW, | |
5063 | .writefn = tlbi_aa64_vae3_write }, | |
0f1a3b24 FA |
5064 | REGINFO_SENTINEL |
5065 | }; | |
5066 | ||
3f208fd7 PM |
5067 | static CPAccessResult ctr_el0_access(CPUARMState *env, const ARMCPRegInfo *ri, |
5068 | bool isread) | |
7da845b0 PM |
5069 | { |
5070 | /* Only accessible in EL0 if SCTLR.UCT is set (and only in AArch64, | |
5071 | * but the AArch32 CTR has its own reginfo struct) | |
5072 | */ | |
137feaa9 | 5073 | if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_UCT)) { |
7da845b0 PM |
5074 | return CP_ACCESS_TRAP; |
5075 | } | |
5076 | return CP_ACCESS_OK; | |
5077 | } | |
5078 | ||
1424ca8d DM |
5079 | static void oslar_write(CPUARMState *env, const ARMCPRegInfo *ri, |
5080 | uint64_t value) | |
5081 | { | |
5082 | /* Writes to OSLAR_EL1 may update the OS lock status, which can be | |
5083 | * read via a bit in OSLSR_EL1. | |
5084 | */ | |
5085 | int oslock; | |
5086 | ||
5087 | if (ri->state == ARM_CP_STATE_AA32) { | |
5088 | oslock = (value == 0xC5ACCE55); | |
5089 | } else { | |
5090 | oslock = value & 1; | |
5091 | } | |
5092 | ||
5093 | env->cp15.oslsr_el1 = deposit32(env->cp15.oslsr_el1, 1, 1, oslock); | |
5094 | } | |
5095 | ||
50300698 | 5096 | static const ARMCPRegInfo debug_cp_reginfo[] = { |
50300698 | 5097 | /* DBGDRAR, DBGDSAR: always RAZ since we don't implement memory mapped |
10aae104 PM |
5098 | * debug components. The AArch64 version of DBGDRAR is named MDRAR_EL1; |
5099 | * unlike DBGDRAR it is never accessible from EL0. | |
5100 | * DBGDSAR is deprecated and must RAZ from v8 anyway, so it has no AArch64 | |
5101 | * accessor. | |
50300698 PM |
5102 | */ |
5103 | { .name = "DBGDRAR", .cp = 14, .crn = 1, .crm = 0, .opc1 = 0, .opc2 = 0, | |
91b0a238 PM |
5104 | .access = PL0_R, .accessfn = access_tdra, |
5105 | .type = ARM_CP_CONST, .resetvalue = 0 }, | |
10aae104 PM |
5106 | { .name = "MDRAR_EL1", .state = ARM_CP_STATE_AA64, |
5107 | .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 0, | |
91b0a238 PM |
5108 | .access = PL1_R, .accessfn = access_tdra, |
5109 | .type = ARM_CP_CONST, .resetvalue = 0 }, | |
50300698 | 5110 | { .name = "DBGDSAR", .cp = 14, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 0, |
91b0a238 PM |
5111 | .access = PL0_R, .accessfn = access_tdra, |
5112 | .type = ARM_CP_CONST, .resetvalue = 0 }, | |
17a9eb53 | 5113 | /* Monitor debug system control register; the 32-bit alias is DBGDSCRext. */ |
10aae104 PM |
5114 | { .name = "MDSCR_EL1", .state = ARM_CP_STATE_BOTH, |
5115 | .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 2, | |
d6c8cf81 | 5116 | .access = PL1_RW, .accessfn = access_tda, |
0e5e8935 PM |
5117 | .fieldoffset = offsetof(CPUARMState, cp15.mdscr_el1), |
5118 | .resetvalue = 0 }, | |
5e8b12ff PM |
5119 | /* MDCCSR_EL0, aka DBGDSCRint. This is a read-only mirror of MDSCR_EL1. |
5120 | * We don't implement the configurable EL0 access. | |
5121 | */ | |
5122 | { .name = "MDCCSR_EL0", .state = ARM_CP_STATE_BOTH, | |
5123 | .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 0, | |
7a0e58fa | 5124 | .type = ARM_CP_ALIAS, |
d6c8cf81 | 5125 | .access = PL1_R, .accessfn = access_tda, |
b061a82b | 5126 | .fieldoffset = offsetof(CPUARMState, cp15.mdscr_el1), }, |
10aae104 PM |
5127 | { .name = "OSLAR_EL1", .state = ARM_CP_STATE_BOTH, |
5128 | .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 4, | |
1424ca8d | 5129 | .access = PL1_W, .type = ARM_CP_NO_RAW, |
187f678d | 5130 | .accessfn = access_tdosa, |
1424ca8d DM |
5131 | .writefn = oslar_write }, |
5132 | { .name = "OSLSR_EL1", .state = ARM_CP_STATE_BOTH, | |
5133 | .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 4, | |
5134 | .access = PL1_R, .resetvalue = 10, | |
187f678d | 5135 | .accessfn = access_tdosa, |
1424ca8d | 5136 | .fieldoffset = offsetof(CPUARMState, cp15.oslsr_el1) }, |
5e8b12ff PM |
5137 | /* Dummy OSDLR_EL1: 32-bit Linux will read this */ |
5138 | { .name = "OSDLR_EL1", .state = ARM_CP_STATE_BOTH, | |
5139 | .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 3, .opc2 = 4, | |
187f678d PM |
5140 | .access = PL1_RW, .accessfn = access_tdosa, |
5141 | .type = ARM_CP_NOP }, | |
5e8b12ff PM |
5142 | /* Dummy DBGVCR: Linux wants to clear this on startup, but we don't |
5143 | * implement vector catch debug events yet. | |
5144 | */ | |
5145 | { .name = "DBGVCR", | |
5146 | .cp = 14, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 0, | |
d6c8cf81 PM |
5147 | .access = PL1_RW, .accessfn = access_tda, |
5148 | .type = ARM_CP_NOP }, | |
4d2ec4da PM |
5149 | /* Dummy DBGVCR32_EL2 (which is only for a 64-bit hypervisor |
5150 | * to save and restore a 32-bit guest's DBGVCR) | |
5151 | */ | |
5152 | { .name = "DBGVCR32_EL2", .state = ARM_CP_STATE_AA64, | |
5153 | .opc0 = 2, .opc1 = 4, .crn = 0, .crm = 7, .opc2 = 0, | |
5154 | .access = PL2_RW, .accessfn = access_tda, | |
5155 | .type = ARM_CP_NOP }, | |
5dbdc434 PM |
5156 | /* Dummy MDCCINT_EL1, since we don't implement the Debug Communications |
5157 | * Channel but Linux may try to access this register. The 32-bit | |
5158 | * alias is DBGDCCINT. | |
5159 | */ | |
5160 | { .name = "MDCCINT_EL1", .state = ARM_CP_STATE_BOTH, | |
5161 | .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 0, | |
5162 | .access = PL1_RW, .accessfn = access_tda, | |
5163 | .type = ARM_CP_NOP }, | |
50300698 PM |
5164 | REGINFO_SENTINEL |
5165 | }; | |
5166 | ||
5167 | static const ARMCPRegInfo debug_lpae_cp_reginfo[] = { | |
5168 | /* 64 bit access versions of the (dummy) debug registers */ | |
5169 | { .name = "DBGDRAR", .cp = 14, .crm = 1, .opc1 = 0, | |
5170 | .access = PL0_R, .type = ARM_CP_CONST|ARM_CP_64BIT, .resetvalue = 0 }, | |
5171 | { .name = "DBGDSAR", .cp = 14, .crm = 2, .opc1 = 0, | |
5172 | .access = PL0_R, .type = ARM_CP_CONST|ARM_CP_64BIT, .resetvalue = 0 }, | |
5173 | REGINFO_SENTINEL | |
5174 | }; | |
5175 | ||
60eed086 RH |
5176 | /* Return the exception level to which exceptions should be taken |
5177 | * via SVEAccessTrap. If an exception should be routed through | |
5178 | * AArch64.AdvSIMDFPAccessTrap, return 0; fp_exception_el should | |
5179 | * take care of raising that exception. | |
5180 | * C.f. the ARM pseudocode function CheckSVEEnabled. | |
5be5e8ed | 5181 | */ |
ced31551 | 5182 | int sve_exception_el(CPUARMState *env, int el) |
5be5e8ed RH |
5183 | { |
5184 | #ifndef CONFIG_USER_ONLY | |
2de7ace2 | 5185 | if (el <= 1) { |
60eed086 RH |
5186 | bool disabled = false; |
5187 | ||
5188 | /* The CPACR.ZEN controls traps to EL1: | |
5189 | * 0, 2 : trap EL0 and EL1 accesses | |
5190 | * 1 : trap only EL0 accesses | |
5191 | * 3 : trap no accesses | |
5192 | */ | |
5193 | if (!extract32(env->cp15.cpacr_el1, 16, 1)) { | |
5194 | disabled = true; | |
5195 | } else if (!extract32(env->cp15.cpacr_el1, 17, 1)) { | |
2de7ace2 | 5196 | disabled = el == 0; |
5be5e8ed | 5197 | } |
60eed086 RH |
5198 | if (disabled) { |
5199 | /* route_to_el2 */ | |
5200 | return (arm_feature(env, ARM_FEATURE_EL2) | |
7c208e0f | 5201 | && (arm_hcr_el2_eff(env) & HCR_TGE) ? 2 : 1); |
5be5e8ed | 5202 | } |
5be5e8ed | 5203 | |
60eed086 RH |
5204 | /* Check CPACR.FPEN. */ |
5205 | if (!extract32(env->cp15.cpacr_el1, 20, 1)) { | |
5206 | disabled = true; | |
5207 | } else if (!extract32(env->cp15.cpacr_el1, 21, 1)) { | |
2de7ace2 | 5208 | disabled = el == 0; |
5be5e8ed | 5209 | } |
60eed086 RH |
5210 | if (disabled) { |
5211 | return 0; | |
5be5e8ed | 5212 | } |
5be5e8ed RH |
5213 | } |
5214 | ||
60eed086 RH |
5215 | /* CPTR_EL2. Since TZ and TFP are positive, |
5216 | * they will be zero when EL2 is not present. | |
5217 | */ | |
2de7ace2 | 5218 | if (el <= 2 && !arm_is_secure_below_el3(env)) { |
60eed086 RH |
5219 | if (env->cp15.cptr_el[2] & CPTR_TZ) { |
5220 | return 2; | |
5221 | } | |
5222 | if (env->cp15.cptr_el[2] & CPTR_TFP) { | |
5223 | return 0; | |
5224 | } | |
5be5e8ed RH |
5225 | } |
5226 | ||
60eed086 RH |
5227 | /* CPTR_EL3. Since EZ is negative we must check for EL3. */ |
5228 | if (arm_feature(env, ARM_FEATURE_EL3) | |
5229 | && !(env->cp15.cptr_el[3] & CPTR_EZ)) { | |
5be5e8ed RH |
5230 | return 3; |
5231 | } | |
5232 | #endif | |
5233 | return 0; | |
5234 | } | |
5235 | ||
0ab5953b RH |
5236 | /* |
5237 | * Given that SVE is enabled, return the vector length for EL. | |
5238 | */ | |
ced31551 | 5239 | uint32_t sve_zcr_len_for_el(CPUARMState *env, int el) |
0ab5953b RH |
5240 | { |
5241 | ARMCPU *cpu = arm_env_get_cpu(env); | |
5242 | uint32_t zcr_len = cpu->sve_max_vq - 1; | |
5243 | ||
5244 | if (el <= 1) { | |
5245 | zcr_len = MIN(zcr_len, 0xf & (uint32_t)env->vfp.zcr_el[1]); | |
5246 | } | |
5247 | if (el < 2 && arm_feature(env, ARM_FEATURE_EL2)) { | |
5248 | zcr_len = MIN(zcr_len, 0xf & (uint32_t)env->vfp.zcr_el[2]); | |
5249 | } | |
5250 | if (el < 3 && arm_feature(env, ARM_FEATURE_EL3)) { | |
5251 | zcr_len = MIN(zcr_len, 0xf & (uint32_t)env->vfp.zcr_el[3]); | |
5252 | } | |
5253 | return zcr_len; | |
5254 | } | |
5255 | ||
5be5e8ed RH |
5256 | static void zcr_write(CPUARMState *env, const ARMCPRegInfo *ri, |
5257 | uint64_t value) | |
5258 | { | |
0ab5953b RH |
5259 | int cur_el = arm_current_el(env); |
5260 | int old_len = sve_zcr_len_for_el(env, cur_el); | |
5261 | int new_len; | |
5262 | ||
5be5e8ed RH |
5263 | /* Bits other than [3:0] are RAZ/WI. */ |
5264 | raw_write(env, ri, value & 0xf); | |
0ab5953b RH |
5265 | |
5266 | /* | |
5267 | * Because we arrived here, we know both FP and SVE are enabled; | |
5268 | * otherwise we would have trapped access to the ZCR_ELn register. | |
5269 | */ | |
5270 | new_len = sve_zcr_len_for_el(env, cur_el); | |
5271 | if (new_len < old_len) { | |
5272 | aarch64_sve_narrow_vq(env, new_len + 1); | |
5273 | } | |
5be5e8ed RH |
5274 | } |
5275 | ||
5276 | static const ARMCPRegInfo zcr_el1_reginfo = { | |
5277 | .name = "ZCR_EL1", .state = ARM_CP_STATE_AA64, | |
5278 | .opc0 = 3, .opc1 = 0, .crn = 1, .crm = 2, .opc2 = 0, | |
11d7870b | 5279 | .access = PL1_RW, .type = ARM_CP_SVE, |
5be5e8ed RH |
5280 | .fieldoffset = offsetof(CPUARMState, vfp.zcr_el[1]), |
5281 | .writefn = zcr_write, .raw_writefn = raw_write | |
5282 | }; | |
5283 | ||
5284 | static const ARMCPRegInfo zcr_el2_reginfo = { | |
5285 | .name = "ZCR_EL2", .state = ARM_CP_STATE_AA64, | |
5286 | .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 2, .opc2 = 0, | |
11d7870b | 5287 | .access = PL2_RW, .type = ARM_CP_SVE, |
5be5e8ed RH |
5288 | .fieldoffset = offsetof(CPUARMState, vfp.zcr_el[2]), |
5289 | .writefn = zcr_write, .raw_writefn = raw_write | |
5290 | }; | |
5291 | ||
5292 | static const ARMCPRegInfo zcr_no_el2_reginfo = { | |
5293 | .name = "ZCR_EL2", .state = ARM_CP_STATE_AA64, | |
5294 | .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 2, .opc2 = 0, | |
11d7870b | 5295 | .access = PL2_RW, .type = ARM_CP_SVE, |
5be5e8ed RH |
5296 | .readfn = arm_cp_read_zero, .writefn = arm_cp_write_ignore |
5297 | }; | |
5298 | ||
5299 | static const ARMCPRegInfo zcr_el3_reginfo = { | |
5300 | .name = "ZCR_EL3", .state = ARM_CP_STATE_AA64, | |
5301 | .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 2, .opc2 = 0, | |
11d7870b | 5302 | .access = PL3_RW, .type = ARM_CP_SVE, |
5be5e8ed RH |
5303 | .fieldoffset = offsetof(CPUARMState, vfp.zcr_el[3]), |
5304 | .writefn = zcr_write, .raw_writefn = raw_write | |
5305 | }; | |
5306 | ||
9ee98ce8 PM |
5307 | void hw_watchpoint_update(ARMCPU *cpu, int n) |
5308 | { | |
5309 | CPUARMState *env = &cpu->env; | |
5310 | vaddr len = 0; | |
5311 | vaddr wvr = env->cp15.dbgwvr[n]; | |
5312 | uint64_t wcr = env->cp15.dbgwcr[n]; | |
5313 | int mask; | |
5314 | int flags = BP_CPU | BP_STOP_BEFORE_ACCESS; | |
5315 | ||
5316 | if (env->cpu_watchpoint[n]) { | |
5317 | cpu_watchpoint_remove_by_ref(CPU(cpu), env->cpu_watchpoint[n]); | |
5318 | env->cpu_watchpoint[n] = NULL; | |
5319 | } | |
5320 | ||
5321 | if (!extract64(wcr, 0, 1)) { | |
5322 | /* E bit clear : watchpoint disabled */ | |
5323 | return; | |
5324 | } | |
5325 | ||
5326 | switch (extract64(wcr, 3, 2)) { | |
5327 | case 0: | |
5328 | /* LSC 00 is reserved and must behave as if the wp is disabled */ | |
5329 | return; | |
5330 | case 1: | |
5331 | flags |= BP_MEM_READ; | |
5332 | break; | |
5333 | case 2: | |
5334 | flags |= BP_MEM_WRITE; | |
5335 | break; | |
5336 | case 3: | |
5337 | flags |= BP_MEM_ACCESS; | |
5338 | break; | |
5339 | } | |
5340 | ||
5341 | /* Attempts to use both MASK and BAS fields simultaneously are | |
5342 | * CONSTRAINED UNPREDICTABLE; we opt to ignore BAS in this case, | |
5343 | * thus generating a watchpoint for every byte in the masked region. | |
5344 | */ | |
5345 | mask = extract64(wcr, 24, 4); | |
5346 | if (mask == 1 || mask == 2) { | |
5347 | /* Reserved values of MASK; we must act as if the mask value was | |
5348 | * some non-reserved value, or as if the watchpoint were disabled. | |
5349 | * We choose the latter. | |
5350 | */ | |
5351 | return; | |
5352 | } else if (mask) { | |
5353 | /* Watchpoint covers an aligned area up to 2GB in size */ | |
5354 | len = 1ULL << mask; | |
5355 | /* If masked bits in WVR are not zero it's CONSTRAINED UNPREDICTABLE | |
5356 | * whether the watchpoint fires when the unmasked bits match; we opt | |
5357 | * to generate the exceptions. | |
5358 | */ | |
5359 | wvr &= ~(len - 1); | |
5360 | } else { | |
5361 | /* Watchpoint covers bytes defined by the byte address select bits */ | |
5362 | int bas = extract64(wcr, 5, 8); | |
5363 | int basstart; | |
5364 | ||
5365 | if (bas == 0) { | |
5366 | /* This must act as if the watchpoint is disabled */ | |
5367 | return; | |
5368 | } | |
5369 | ||
5370 | if (extract64(wvr, 2, 1)) { | |
5371 | /* Deprecated case of an only 4-aligned address. BAS[7:4] are | |
5372 | * ignored, and BAS[3:0] define which bytes to watch. | |
5373 | */ | |
5374 | bas &= 0xf; | |
5375 | } | |
5376 | /* The BAS bits are supposed to be programmed to indicate a contiguous | |
5377 | * range of bytes. Otherwise it is CONSTRAINED UNPREDICTABLE whether | |
5378 | * we fire for each byte in the word/doubleword addressed by the WVR. | |
5379 | * We choose to ignore any non-zero bits after the first range of 1s. | |
5380 | */ | |
5381 | basstart = ctz32(bas); | |
5382 | len = cto32(bas >> basstart); | |
5383 | wvr += basstart; | |
5384 | } | |
5385 | ||
5386 | cpu_watchpoint_insert(CPU(cpu), wvr, len, flags, | |
5387 | &env->cpu_watchpoint[n]); | |
5388 | } | |
5389 | ||
5390 | void hw_watchpoint_update_all(ARMCPU *cpu) | |
5391 | { | |
5392 | int i; | |
5393 | CPUARMState *env = &cpu->env; | |
5394 | ||
5395 | /* Completely clear out existing QEMU watchpoints and our array, to | |
5396 | * avoid possible stale entries following migration load. | |
5397 | */ | |
5398 | cpu_watchpoint_remove_all(CPU(cpu), BP_CPU); | |
5399 | memset(env->cpu_watchpoint, 0, sizeof(env->cpu_watchpoint)); | |
5400 | ||
5401 | for (i = 0; i < ARRAY_SIZE(cpu->env.cpu_watchpoint); i++) { | |
5402 | hw_watchpoint_update(cpu, i); | |
5403 | } | |
5404 | } | |
5405 | ||
5406 | static void dbgwvr_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
5407 | uint64_t value) | |
5408 | { | |
5409 | ARMCPU *cpu = arm_env_get_cpu(env); | |
5410 | int i = ri->crm; | |
5411 | ||
5412 | /* Bits [63:49] are hardwired to the value of bit [48]; that is, the | |
5413 | * register reads and behaves as if values written are sign extended. | |
5414 | * Bits [1:0] are RES0. | |
5415 | */ | |
5416 | value = sextract64(value, 0, 49) & ~3ULL; | |
5417 | ||
5418 | raw_write(env, ri, value); | |
5419 | hw_watchpoint_update(cpu, i); | |
5420 | } | |
5421 | ||
5422 | static void dbgwcr_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
5423 | uint64_t value) | |
5424 | { | |
5425 | ARMCPU *cpu = arm_env_get_cpu(env); | |
5426 | int i = ri->crm; | |
5427 | ||
5428 | raw_write(env, ri, value); | |
5429 | hw_watchpoint_update(cpu, i); | |
5430 | } | |
5431 | ||
46747d15 PM |
5432 | void hw_breakpoint_update(ARMCPU *cpu, int n) |
5433 | { | |
5434 | CPUARMState *env = &cpu->env; | |
5435 | uint64_t bvr = env->cp15.dbgbvr[n]; | |
5436 | uint64_t bcr = env->cp15.dbgbcr[n]; | |
5437 | vaddr addr; | |
5438 | int bt; | |
5439 | int flags = BP_CPU; | |
5440 | ||
5441 | if (env->cpu_breakpoint[n]) { | |
5442 | cpu_breakpoint_remove_by_ref(CPU(cpu), env->cpu_breakpoint[n]); | |
5443 | env->cpu_breakpoint[n] = NULL; | |
5444 | } | |
5445 | ||
5446 | if (!extract64(bcr, 0, 1)) { | |
5447 | /* E bit clear : watchpoint disabled */ | |
5448 | return; | |
5449 | } | |
5450 | ||
5451 | bt = extract64(bcr, 20, 4); | |
5452 | ||
5453 | switch (bt) { | |
5454 | case 4: /* unlinked address mismatch (reserved if AArch64) */ | |
5455 | case 5: /* linked address mismatch (reserved if AArch64) */ | |
5456 | qemu_log_mask(LOG_UNIMP, | |
0221c8fd | 5457 | "arm: address mismatch breakpoint types not implemented\n"); |
46747d15 PM |
5458 | return; |
5459 | case 0: /* unlinked address match */ | |
5460 | case 1: /* linked address match */ | |
5461 | { | |
5462 | /* Bits [63:49] are hardwired to the value of bit [48]; that is, | |
5463 | * we behave as if the register was sign extended. Bits [1:0] are | |
5464 | * RES0. The BAS field is used to allow setting breakpoints on 16 | |
5465 | * bit wide instructions; it is CONSTRAINED UNPREDICTABLE whether | |
5466 | * a bp will fire if the addresses covered by the bp and the addresses | |
5467 | * covered by the insn overlap but the insn doesn't start at the | |
5468 | * start of the bp address range. We choose to require the insn and | |
5469 | * the bp to have the same address. The constraints on writing to | |
5470 | * BAS enforced in dbgbcr_write mean we have only four cases: | |
5471 | * 0b0000 => no breakpoint | |
5472 | * 0b0011 => breakpoint on addr | |
5473 | * 0b1100 => breakpoint on addr + 2 | |
5474 | * 0b1111 => breakpoint on addr | |
5475 | * See also figure D2-3 in the v8 ARM ARM (DDI0487A.c). | |
5476 | */ | |
5477 | int bas = extract64(bcr, 5, 4); | |
5478 | addr = sextract64(bvr, 0, 49) & ~3ULL; | |
5479 | if (bas == 0) { | |
5480 | return; | |
5481 | } | |
5482 | if (bas == 0xc) { | |
5483 | addr += 2; | |
5484 | } | |
5485 | break; | |
5486 | } | |
5487 | case 2: /* unlinked context ID match */ | |
5488 | case 8: /* unlinked VMID match (reserved if no EL2) */ | |
5489 | case 10: /* unlinked context ID and VMID match (reserved if no EL2) */ | |
5490 | qemu_log_mask(LOG_UNIMP, | |
0221c8fd | 5491 | "arm: unlinked context breakpoint types not implemented\n"); |
46747d15 PM |
5492 | return; |
5493 | case 9: /* linked VMID match (reserved if no EL2) */ | |
5494 | case 11: /* linked context ID and VMID match (reserved if no EL2) */ | |
5495 | case 3: /* linked context ID match */ | |
5496 | default: | |
5497 | /* We must generate no events for Linked context matches (unless | |
5498 | * they are linked to by some other bp/wp, which is handled in | |
5499 | * updates for the linking bp/wp). We choose to also generate no events | |
5500 | * for reserved values. | |
5501 | */ | |
5502 | return; | |
5503 | } | |
5504 | ||
5505 | cpu_breakpoint_insert(CPU(cpu), addr, flags, &env->cpu_breakpoint[n]); | |
5506 | } | |
5507 | ||
5508 | void hw_breakpoint_update_all(ARMCPU *cpu) | |
5509 | { | |
5510 | int i; | |
5511 | CPUARMState *env = &cpu->env; | |
5512 | ||
5513 | /* Completely clear out existing QEMU breakpoints and our array, to | |
5514 | * avoid possible stale entries following migration load. | |
5515 | */ | |
5516 | cpu_breakpoint_remove_all(CPU(cpu), BP_CPU); | |
5517 | memset(env->cpu_breakpoint, 0, sizeof(env->cpu_breakpoint)); | |
5518 | ||
5519 | for (i = 0; i < ARRAY_SIZE(cpu->env.cpu_breakpoint); i++) { | |
5520 | hw_breakpoint_update(cpu, i); | |
5521 | } | |
5522 | } | |
5523 | ||
5524 | static void dbgbvr_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
5525 | uint64_t value) | |
5526 | { | |
5527 | ARMCPU *cpu = arm_env_get_cpu(env); | |
5528 | int i = ri->crm; | |
5529 | ||
5530 | raw_write(env, ri, value); | |
5531 | hw_breakpoint_update(cpu, i); | |
5532 | } | |
5533 | ||
5534 | static void dbgbcr_write(CPUARMState *env, const ARMCPRegInfo *ri, | |
5535 | uint64_t value) | |
5536 | { | |
5537 | ARMCPU *cpu = arm_env_get_cpu(env); | |
5538 | int i = ri->crm; | |
5539 | ||
5540 | /* BAS[3] is a read-only copy of BAS[2], and BAS[1] a read-only | |
5541 | * copy of BAS[0]. | |
5542 | */ | |
5543 | value = deposit64(value, 6, 1, extract64(value, 5, 1)); | |
5544 | value = deposit64(value, 8, 1, extract64(value, 7, 1)); | |
5545 | ||
5546 | raw_write(env, ri, value); | |
5547 | hw_breakpoint_update(cpu, i); | |
5548 | } | |
5549 | ||
50300698 | 5550 | static void define_debug_regs(ARMCPU *cpu) |
0b45451e | 5551 | { |
50300698 PM |
5552 | /* Define v7 and v8 architectural debug registers. |
5553 | * These are just dummy implementations for now. | |
0b45451e PM |
5554 | */ |
5555 | int i; | |
3ff6fc91 | 5556 | int wrps, brps, ctx_cmps; |
48eb3ae6 PM |
5557 | ARMCPRegInfo dbgdidr = { |
5558 | .name = "DBGDIDR", .cp = 14, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 0, | |
d6c8cf81 PM |
5559 | .access = PL0_R, .accessfn = access_tda, |
5560 | .type = ARM_CP_CONST, .resetvalue = cpu->dbgdidr, | |
48eb3ae6 PM |
5561 | }; |
5562 | ||
3ff6fc91 | 5563 | /* Note that all these register fields hold "number of Xs minus 1". */ |
48eb3ae6 PM |
5564 | brps = extract32(cpu->dbgdidr, 24, 4); |
5565 | wrps = extract32(cpu->dbgdidr, 28, 4); | |
3ff6fc91 PM |
5566 | ctx_cmps = extract32(cpu->dbgdidr, 20, 4); |
5567 | ||
5568 | assert(ctx_cmps <= brps); | |
48eb3ae6 PM |
5569 | |
5570 | /* The DBGDIDR and ID_AA64DFR0_EL1 define various properties | |
5571 | * of the debug registers such as number of breakpoints; | |
5572 | * check that if they both exist then they agree. | |
5573 | */ | |
5574 | if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) { | |
5575 | assert(extract32(cpu->id_aa64dfr0, 12, 4) == brps); | |
5576 | assert(extract32(cpu->id_aa64dfr0, 20, 4) == wrps); | |
3ff6fc91 | 5577 | assert(extract32(cpu->id_aa64dfr0, 28, 4) == ctx_cmps); |
48eb3ae6 | 5578 | } |
0b45451e | 5579 | |
48eb3ae6 | 5580 | define_one_arm_cp_reg(cpu, &dbgdidr); |
50300698 PM |
5581 | define_arm_cp_regs(cpu, debug_cp_reginfo); |
5582 | ||
5583 | if (arm_feature(&cpu->env, ARM_FEATURE_LPAE)) { | |
5584 | define_arm_cp_regs(cpu, debug_lpae_cp_reginfo); | |
5585 | } | |
5586 | ||
48eb3ae6 | 5587 | for (i = 0; i < brps + 1; i++) { |
0b45451e | 5588 | ARMCPRegInfo dbgregs[] = { |
10aae104 PM |
5589 | { .name = "DBGBVR", .state = ARM_CP_STATE_BOTH, |
5590 | .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 4, | |
d6c8cf81 | 5591 | .access = PL1_RW, .accessfn = access_tda, |
46747d15 PM |
5592 | .fieldoffset = offsetof(CPUARMState, cp15.dbgbvr[i]), |
5593 | .writefn = dbgbvr_write, .raw_writefn = raw_write | |
5594 | }, | |
10aae104 PM |
5595 | { .name = "DBGBCR", .state = ARM_CP_STATE_BOTH, |
5596 | .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 5, | |
d6c8cf81 | 5597 | .access = PL1_RW, .accessfn = access_tda, |
46747d15 PM |
5598 | .fieldoffset = offsetof(CPUARMState, cp15.dbgbcr[i]), |
5599 | .writefn = dbgbcr_write, .raw_writefn = raw_write | |
5600 | }, | |
48eb3ae6 PM |
5601 | REGINFO_SENTINEL |
5602 | }; | |
5603 | define_arm_cp_regs(cpu, dbgregs); | |
5604 | } | |
5605 | ||
5606 | for (i = 0; i < wrps + 1; i++) { | |
5607 | ARMCPRegInfo dbgregs[] = { | |
10aae104 PM |
5608 | { .name = "DBGWVR", .state = ARM_CP_STATE_BOTH, |
5609 | .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 6, | |
d6c8cf81 | 5610 | .access = PL1_RW, .accessfn = access_tda, |
9ee98ce8 PM |
5611 | .fieldoffset = offsetof(CPUARMState, cp15.dbgwvr[i]), |
5612 | .writefn = dbgwvr_write, .raw_writefn = raw_write | |
5613 | }, | |
10aae104 PM |
5614 | { .name = "DBGWCR", .state = ARM_CP_STATE_BOTH, |
5615 | .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 7, | |
d6c8cf81 | 5616 | .access = PL1_RW, .accessfn = access_tda, |
9ee98ce8 PM |
5617 | .fieldoffset = offsetof(CPUARMState, cp15.dbgwcr[i]), |
5618 | .writefn = dbgwcr_write, .raw_writefn = raw_write | |
5619 | }, | |
5620 | REGINFO_SENTINEL | |
0b45451e PM |
5621 | }; |
5622 | define_arm_cp_regs(cpu, dbgregs); | |
5623 | } | |
5624 | } | |
5625 | ||
96a8b92e PM |
5626 | /* We don't know until after realize whether there's a GICv3 |
5627 | * attached, and that is what registers the gicv3 sysregs. | |
5628 | * So we have to fill in the GIC fields in ID_PFR/ID_PFR1_EL1/ID_AA64PFR0_EL1 | |
5629 | * at runtime. | |
5630 | */ | |
5631 | static uint64_t id_pfr1_read(CPUARMState *env, const ARMCPRegInfo *ri) | |
5632 | { | |
5633 | ARMCPU *cpu = arm_env_get_cpu(env); | |
5634 | uint64_t pfr1 = cpu->id_pfr1; | |
5635 | ||
5636 | if (env->gicv3state) { | |
5637 | pfr1 |= 1 << 28; | |
5638 | } | |
5639 | return pfr1; | |
5640 | } | |
5641 | ||
5642 | static uint64_t id_aa64pfr0_read(CPUARMState *env, const ARMCPRegInfo *ri) | |
5643 | { | |
5644 | ARMCPU *cpu = arm_env_get_cpu(env); | |
47576b94 | 5645 | uint64_t pfr0 = cpu->isar.id_aa64pfr0; |
96a8b92e PM |
5646 | |
5647 | if (env->gicv3state) { | |
5648 | pfr0 |= 1 << 24; | |
5649 | } | |
5650 | return pfr0; | |
5651 | } | |
5652 | ||
2d7137c1 RH |
5653 | /* Shared logic between LORID and the rest of the LOR* registers. |
5654 | * Secure state has already been delt with. | |
5655 | */ | |
5656 | static CPAccessResult access_lor_ns(CPUARMState *env) | |
5657 | { | |
5658 | int el = arm_current_el(env); | |
5659 | ||
5660 | if (el < 2 && (arm_hcr_el2_eff(env) & HCR_TLOR)) { | |
5661 | return CP_ACCESS_TRAP_EL2; | |
5662 | } | |
5663 | if (el < 3 && (env->cp15.scr_el3 & SCR_TLOR)) { | |
5664 | return CP_ACCESS_TRAP_EL3; | |
5665 | } | |
5666 | return CP_ACCESS_OK; | |
5667 | } | |
5668 | ||
5669 | static CPAccessResult access_lorid(CPUARMState *env, const ARMCPRegInfo *ri, | |
5670 | bool isread) | |
5671 | { | |
5672 | if (arm_is_secure_below_el3(env)) { | |
5673 | /* Access ok in secure mode. */ | |
5674 | return CP_ACCESS_OK; | |
5675 | } | |
5676 | return access_lor_ns(env); | |
5677 | } | |
5678 | ||
5679 | static CPAccessResult access_lor_other(CPUARMState *env, | |
5680 | const ARMCPRegInfo *ri, bool isread) | |
5681 | { | |
5682 | if (arm_is_secure_below_el3(env)) { | |
5683 | /* Access denied in secure mode. */ | |
5684 | return CP_ACCESS_TRAP; | |
5685 | } | |
5686 | return access_lor_ns(env); | |
5687 | } | |
5688 | ||
967aa94f RH |
5689 | #ifdef TARGET_AARCH64 |
5690 | static CPAccessResult access_pauth(CPUARMState *env, const ARMCPRegInfo *ri, | |
5691 | bool isread) | |
5692 | { | |
5693 | int el = arm_current_el(env); | |
5694 | ||
5695 | if (el < 2 && | |
5696 | arm_feature(env, ARM_FEATURE_EL2) && | |
5697 | !(arm_hcr_el2_eff(env) & HCR_APK)) { | |
5698 | return CP_ACCESS_TRAP_EL2; | |
5699 | } | |
5700 | if (el < 3 && | |
5701 | arm_feature(env, ARM_FEATURE_EL3) && | |
5702 | !(env->cp15.scr_el3 & SCR_APK)) { | |
5703 | return CP_ACCESS_TRAP_EL3; | |
5704 | } | |
5705 | return CP_ACCESS_OK; | |
5706 | } | |
5707 | ||
5708 | static const ARMCPRegInfo pauth_reginfo[] = { | |
5709 | { .name = "APDAKEYLO_EL1", .state = ARM_CP_STATE_AA64, | |
5710 | .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 2, .opc2 = 0, | |
5711 | .access = PL1_RW, .accessfn = access_pauth, | |
108b3ba8 | 5712 | .fieldoffset = offsetof(CPUARMState, keys.apda.lo) }, |
967aa94f RH |
5713 | { .name = "APDAKEYHI_EL1", .state = ARM_CP_STATE_AA64, |
5714 | .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 2, .opc2 = 1, | |
5715 | .access = PL1_RW, .accessfn = access_pauth, | |
108b3ba8 | 5716 | .fieldoffset = offsetof(CPUARMState, keys.apda.hi) }, |
967aa94f RH |
5717 | { .name = "APDBKEYLO_EL1", .state = ARM_CP_STATE_AA64, |
5718 | .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 2, .opc2 = 2, | |
5719 | .access = PL1_RW, .accessfn = access_pauth, | |
108b3ba8 | 5720 | .fieldoffset = offsetof(CPUARMState, keys.apdb.lo) }, |
967aa94f RH |
5721 | { .name = "APDBKEYHI_EL1", .state = ARM_CP_STATE_AA64, |
5722 | .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 2, .opc2 = 3, | |
5723 | .access = PL1_RW, .accessfn = access_pauth, | |
108b3ba8 | 5724 | .fieldoffset = offsetof(CPUARMState, keys.apdb.hi) }, |
967aa94f RH |
5725 | { .name = "APGAKEYLO_EL1", .state = ARM_CP_STATE_AA64, |
5726 | .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 3, .opc2 = 0, | |
5727 | .access = PL1_RW, .accessfn = access_pauth, | |
108b3ba8 | 5728 | .fieldoffset = offsetof(CPUARMState, keys.apga.lo) }, |
967aa94f RH |
5729 | { .name = "APGAKEYHI_EL1", .state = ARM_CP_STATE_AA64, |
5730 | .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 3, .opc2 = 1, | |
5731 | .access = PL1_RW, .accessfn = access_pauth, | |
108b3ba8 | 5732 | .fieldoffset = offsetof(CPUARMState, keys.apga.hi) }, |
967aa94f RH |
5733 | { .name = "APIAKEYLO_EL1", .state = ARM_CP_STATE_AA64, |
5734 | .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 1, .opc2 = 0, | |
5735 | .access = PL1_RW, .accessfn = access_pauth, | |
108b3ba8 | 5736 | .fieldoffset = offsetof(CPUARMState, keys.apia.lo) }, |
967aa94f RH |
5737 | { .name = "APIAKEYHI_EL1", .state = ARM_CP_STATE_AA64, |
5738 | .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 1, .opc2 = 1, | |
5739 | .access = PL1_RW, .accessfn = access_pauth, | |
108b3ba8 | 5740 | .fieldoffset = offsetof(CPUARMState, keys.apia.hi) }, |
967aa94f RH |
5741 | { .name = "APIBKEYLO_EL1", .state = ARM_CP_STATE_AA64, |
5742 | .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 1, .opc2 = 2, | |
5743 | .access = PL1_RW, .accessfn = access_pauth, | |
108b3ba8 | 5744 | .fieldoffset = offsetof(CPUARMState, keys.apib.lo) }, |
967aa94f RH |
5745 | { .name = "APIBKEYHI_EL1", .state = ARM_CP_STATE_AA64, |
5746 | .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 1, .opc2 = 3, | |
5747 | .access = PL1_RW, .accessfn = access_pauth, | |
108b3ba8 | 5748 | .fieldoffset = offsetof(CPUARMState, keys.apib.hi) }, |
967aa94f RH |
5749 | REGINFO_SENTINEL |
5750 | }; | |
de390645 RH |
5751 | |
5752 | static uint64_t rndr_readfn(CPUARMState *env, const ARMCPRegInfo *ri) | |
5753 | { | |
5754 | Error *err = NULL; | |
5755 | uint64_t ret; | |
5756 | ||
5757 | /* Success sets NZCV = 0000. */ | |
5758 | env->NF = env->CF = env->VF = 0, env->ZF = 1; | |
5759 | ||
5760 | if (qemu_guest_getrandom(&ret, sizeof(ret), &err) < 0) { | |
5761 | /* | |
5762 | * ??? Failed, for unknown reasons in the crypto subsystem. | |
5763 | * The best we can do is log the reason and return the | |
5764 | * timed-out indication to the guest. There is no reason | |
5765 | * we know to expect this failure to be transitory, so the | |
5766 | * guest may well hang retrying the operation. | |
5767 | */ | |
5768 | qemu_log_mask(LOG_UNIMP, "%s: Crypto failure: %s", | |
5769 | ri->name, error_get_pretty(err)); | |
5770 | error_free(err); | |
5771 | ||
5772 | env->ZF = 0; /* NZCF = 0100 */ | |
5773 | return 0; | |
5774 | } | |
5775 | return ret; | |
5776 | } | |
5777 | ||
5778 | /* We do not support re-seeding, so the two registers operate the same. */ | |
5779 | static const ARMCPRegInfo rndr_reginfo[] = { | |
5780 | { .name = "RNDR", .state = ARM_CP_STATE_AA64, | |
5781 | .type = ARM_CP_NO_RAW | ARM_CP_SUPPRESS_TB_END | ARM_CP_IO, | |
5782 | .opc0 = 3, .opc1 = 3, .crn = 2, .crm = 4, .opc2 = 0, | |
5783 | .access = PL0_R, .readfn = rndr_readfn }, | |
5784 | { .name = "RNDRRS", .state = ARM_CP_STATE_AA64, | |
5785 | .type = ARM_CP_NO_RAW | ARM_CP_SUPPRESS_TB_END | ARM_CP_IO, | |
5786 | .opc0 = 3, .opc1 = 3, .crn = 2, .crm = 4, .opc2 = 1, | |
5787 | .access = PL0_R, .readfn = rndr_readfn }, | |
5788 | REGINFO_SENTINEL | |
5789 | }; | |
967aa94f RH |
5790 | #endif |
5791 | ||
cb570bd3 RH |
5792 | static CPAccessResult access_predinv(CPUARMState *env, const ARMCPRegInfo *ri, |
5793 | bool isread) | |
5794 | { | |
5795 | int el = arm_current_el(env); | |
5796 | ||
5797 | if (el == 0) { | |
5798 | uint64_t sctlr = arm_sctlr(env, el); | |
5799 | if (!(sctlr & SCTLR_EnRCTX)) { | |
5800 | return CP_ACCESS_TRAP; | |
5801 | } | |
5802 | } else if (el == 1) { | |
5803 | uint64_t hcr = arm_hcr_el2_eff(env); | |
5804 | if (hcr & HCR_NV) { | |
5805 | return CP_ACCESS_TRAP_EL2; | |
5806 | } | |
5807 | } | |
5808 | return CP_ACCESS_OK; | |
5809 | } | |
5810 | ||
5811 | static const ARMCPRegInfo predinv_reginfo[] = { | |
5812 | { .name = "CFP_RCTX", .state = ARM_CP_STATE_AA64, | |
5813 | .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 3, .opc2 = 4, | |
5814 | .type = ARM_CP_NOP, .access = PL0_W, .accessfn = access_predinv }, | |
5815 | { .name = "DVP_RCTX", .state = ARM_CP_STATE_AA64, | |
5816 | .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 3, .opc2 = 5, | |
5817 | .type = ARM_CP_NOP, .access = PL0_W, .accessfn = access_predinv }, | |
5818 | { .name = "CPP_RCTX", .state = ARM_CP_STATE_AA64, | |
5819 | .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 3, .opc2 = 7, | |
5820 | .type = ARM_CP_NOP, .access = PL0_W, .accessfn = access_predinv }, | |
5821 | /* | |
5822 | * Note the AArch32 opcodes have a different OPC1. | |
5823 | */ | |
5824 | { .name = "CFPRCTX", .state = ARM_CP_STATE_AA32, | |
5825 | .cp = 15, .opc1 = 0, .crn = 7, .crm = 3, .opc2 = 4, | |
5826 | .type = ARM_CP_NOP, .access = PL0_W, .accessfn = access_predinv }, | |
5827 | { .name = "DVPRCTX", .state = ARM_CP_STATE_AA32, | |
5828 | .cp = 15, .opc1 = 0, .crn = 7, .crm = 3, .opc2 = 5, | |
5829 | .type = ARM_CP_NOP, .access = PL0_W, .accessfn = access_predinv }, | |
5830 | { .name = "CPPRCTX", .state = ARM_CP_STATE_AA32, | |
5831 | .cp = 15, .opc1 = 0, .crn = 7, .crm = 3, .opc2 = 7, | |
5832 | .type = ARM_CP_NOP, .access = PL0_W, .accessfn = access_predinv }, | |
5833 | REGINFO_SENTINEL | |
5834 | }; | |
5835 | ||
2ceb98c0 PM |
5836 | void register_cp_regs_for_features(ARMCPU *cpu) |
5837 | { | |
5838 | /* Register all the coprocessor registers based on feature bits */ | |
5839 | CPUARMState *env = &cpu->env; | |
5840 | if (arm_feature(env, ARM_FEATURE_M)) { | |
5841 | /* M profile has no coprocessor registers */ | |
5842 | return; | |
5843 | } | |
5844 | ||
e9aa6c21 | 5845 | define_arm_cp_regs(cpu, cp_reginfo); |
9449fdf6 PM |
5846 | if (!arm_feature(env, ARM_FEATURE_V8)) { |
5847 | /* Must go early as it is full of wildcards that may be | |
5848 | * overridden by later definitions. | |
5849 | */ | |
5850 | define_arm_cp_regs(cpu, not_v8_cp_reginfo); | |
5851 | } | |
5852 | ||
7d57f408 | 5853 | if (arm_feature(env, ARM_FEATURE_V6)) { |
8515a092 PM |
5854 | /* The ID registers all have impdef reset values */ |
5855 | ARMCPRegInfo v6_idregs[] = { | |
0ff644a7 PM |
5856 | { .name = "ID_PFR0", .state = ARM_CP_STATE_BOTH, |
5857 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 0, | |
5858 | .access = PL1_R, .type = ARM_CP_CONST, | |
8515a092 | 5859 | .resetvalue = cpu->id_pfr0 }, |
96a8b92e PM |
5860 | /* ID_PFR1 is not a plain ARM_CP_CONST because we don't know |
5861 | * the value of the GIC field until after we define these regs. | |
5862 | */ | |
0ff644a7 PM |
5863 | { .name = "ID_PFR1", .state = ARM_CP_STATE_BOTH, |
5864 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 1, | |
96a8b92e PM |
5865 | .access = PL1_R, .type = ARM_CP_NO_RAW, |
5866 | .readfn = id_pfr1_read, | |
5867 | .writefn = arm_cp_write_ignore }, | |
0ff644a7 PM |
5868 | { .name = "ID_DFR0", .state = ARM_CP_STATE_BOTH, |
5869 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 2, | |
5870 | .access = PL1_R, .type = ARM_CP_CONST, | |
8515a092 | 5871 | .resetvalue = cpu->id_dfr0 }, |
0ff644a7 PM |
5872 | { .name = "ID_AFR0", .state = ARM_CP_STATE_BOTH, |
5873 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 3, | |
5874 | .access = PL1_R, .type = ARM_CP_CONST, | |
8515a092 | 5875 | .resetvalue = cpu->id_afr0 }, |
0ff644a7 PM |
5876 | { .name = "ID_MMFR0", .state = ARM_CP_STATE_BOTH, |
5877 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 4, | |
5878 | .access = PL1_R, .type = ARM_CP_CONST, | |
8515a092 | 5879 | .resetvalue = cpu->id_mmfr0 }, |
0ff644a7 PM |
5880 | { .name = "ID_MMFR1", .state = ARM_CP_STATE_BOTH, |
5881 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 5, | |
5882 | .access = PL1_R, .type = ARM_CP_CONST, | |
8515a092 | 5883 | .resetvalue = cpu->id_mmfr1 }, |
0ff644a7 PM |
5884 | { .name = "ID_MMFR2", .state = ARM_CP_STATE_BOTH, |
5885 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 6, | |
5886 | .access = PL1_R, .type = ARM_CP_CONST, | |
8515a092 | 5887 | .resetvalue = cpu->id_mmfr2 }, |
0ff644a7 PM |
5888 | { .name = "ID_MMFR3", .state = ARM_CP_STATE_BOTH, |
5889 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 7, | |
5890 | .access = PL1_R, .type = ARM_CP_CONST, | |
8515a092 | 5891 | .resetvalue = cpu->id_mmfr3 }, |
0ff644a7 PM |
5892 | { .name = "ID_ISAR0", .state = ARM_CP_STATE_BOTH, |
5893 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 0, | |
5894 | .access = PL1_R, .type = ARM_CP_CONST, | |
47576b94 | 5895 | .resetvalue = cpu->isar.id_isar0 }, |
0ff644a7 PM |
5896 | { .name = "ID_ISAR1", .state = ARM_CP_STATE_BOTH, |
5897 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 1, | |
5898 | .access = PL1_R, .type = ARM_CP_CONST, | |
47576b94 | 5899 | .resetvalue = cpu->isar.id_isar1 }, |
0ff644a7 PM |
5900 | { .name = "ID_ISAR2", .state = ARM_CP_STATE_BOTH, |
5901 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 2, | |
5902 | .access = PL1_R, .type = ARM_CP_CONST, | |
47576b94 | 5903 | .resetvalue = cpu->isar.id_isar2 }, |
0ff644a7 PM |
5904 | { .name = "ID_ISAR3", .state = ARM_CP_STATE_BOTH, |
5905 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 3, | |
5906 | .access = PL1_R, .type = ARM_CP_CONST, | |
47576b94 | 5907 | .resetvalue = cpu->isar.id_isar3 }, |
0ff644a7 PM |
5908 | { .name = "ID_ISAR4", .state = ARM_CP_STATE_BOTH, |
5909 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 4, | |
5910 | .access = PL1_R, .type = ARM_CP_CONST, | |
47576b94 | 5911 | .resetvalue = cpu->isar.id_isar4 }, |
0ff644a7 PM |
5912 | { .name = "ID_ISAR5", .state = ARM_CP_STATE_BOTH, |
5913 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 5, | |
5914 | .access = PL1_R, .type = ARM_CP_CONST, | |
47576b94 | 5915 | .resetvalue = cpu->isar.id_isar5 }, |
e20d84c1 PM |
5916 | { .name = "ID_MMFR4", .state = ARM_CP_STATE_BOTH, |
5917 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 6, | |
5918 | .access = PL1_R, .type = ARM_CP_CONST, | |
5919 | .resetvalue = cpu->id_mmfr4 }, | |
802abf40 | 5920 | { .name = "ID_ISAR6", .state = ARM_CP_STATE_BOTH, |
e20d84c1 PM |
5921 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 7, |
5922 | .access = PL1_R, .type = ARM_CP_CONST, | |
47576b94 | 5923 | .resetvalue = cpu->isar.id_isar6 }, |
8515a092 PM |
5924 | REGINFO_SENTINEL |
5925 | }; | |
5926 | define_arm_cp_regs(cpu, v6_idregs); | |
7d57f408 PM |
5927 | define_arm_cp_regs(cpu, v6_cp_reginfo); |
5928 | } else { | |
5929 | define_arm_cp_regs(cpu, not_v6_cp_reginfo); | |
5930 | } | |
4d31c596 PM |
5931 | if (arm_feature(env, ARM_FEATURE_V6K)) { |
5932 | define_arm_cp_regs(cpu, v6k_cp_reginfo); | |
5933 | } | |
5e5cf9e3 | 5934 | if (arm_feature(env, ARM_FEATURE_V7MP) && |
452a0955 | 5935 | !arm_feature(env, ARM_FEATURE_PMSA)) { |
995939a6 PM |
5936 | define_arm_cp_regs(cpu, v7mp_cp_reginfo); |
5937 | } | |
327dd510 AL |
5938 | if (arm_feature(env, ARM_FEATURE_V7VE)) { |
5939 | define_arm_cp_regs(cpu, pmovsset_cp_reginfo); | |
5940 | } | |
e9aa6c21 | 5941 | if (arm_feature(env, ARM_FEATURE_V7)) { |
200ac0ef | 5942 | /* v7 performance monitor control register: same implementor |
ac689a2e AL |
5943 | * field as main ID register, and we implement four counters in |
5944 | * addition to the cycle count register. | |
200ac0ef | 5945 | */ |
ac689a2e | 5946 | unsigned int i, pmcrn = 4; |
200ac0ef PM |
5947 | ARMCPRegInfo pmcr = { |
5948 | .name = "PMCR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 0, | |
8521466b | 5949 | .access = PL0_RW, |
7a0e58fa | 5950 | .type = ARM_CP_IO | ARM_CP_ALIAS, |
8521466b | 5951 | .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmcr), |
fcd25206 PM |
5952 | .accessfn = pmreg_access, .writefn = pmcr_write, |
5953 | .raw_writefn = raw_write, | |
200ac0ef | 5954 | }; |
8521466b AF |
5955 | ARMCPRegInfo pmcr64 = { |
5956 | .name = "PMCR_EL0", .state = ARM_CP_STATE_AA64, | |
5957 | .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 0, | |
5958 | .access = PL0_RW, .accessfn = pmreg_access, | |
5959 | .type = ARM_CP_IO, | |
5960 | .fieldoffset = offsetof(CPUARMState, cp15.c9_pmcr), | |
ac689a2e | 5961 | .resetvalue = (cpu->midr & 0xff000000) | (pmcrn << PMCRN_SHIFT), |
8521466b AF |
5962 | .writefn = pmcr_write, .raw_writefn = raw_write, |
5963 | }; | |
7c2cb42b | 5964 | define_one_arm_cp_reg(cpu, &pmcr); |
8521466b | 5965 | define_one_arm_cp_reg(cpu, &pmcr64); |
5ecdd3e4 AL |
5966 | for (i = 0; i < pmcrn; i++) { |
5967 | char *pmevcntr_name = g_strdup_printf("PMEVCNTR%d", i); | |
5968 | char *pmevcntr_el0_name = g_strdup_printf("PMEVCNTR%d_EL0", i); | |
5969 | char *pmevtyper_name = g_strdup_printf("PMEVTYPER%d", i); | |
5970 | char *pmevtyper_el0_name = g_strdup_printf("PMEVTYPER%d_EL0", i); | |
5971 | ARMCPRegInfo pmev_regs[] = { | |
62c7ec34 | 5972 | { .name = pmevcntr_name, .cp = 15, .crn = 14, |
5ecdd3e4 AL |
5973 | .crm = 8 | (3 & (i >> 3)), .opc1 = 0, .opc2 = i & 7, |
5974 | .access = PL0_RW, .type = ARM_CP_IO | ARM_CP_ALIAS, | |
5975 | .readfn = pmevcntr_readfn, .writefn = pmevcntr_writefn, | |
5976 | .accessfn = pmreg_access }, | |
5977 | { .name = pmevcntr_el0_name, .state = ARM_CP_STATE_AA64, | |
62c7ec34 | 5978 | .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 8 | (3 & (i >> 3)), |
5ecdd3e4 AL |
5979 | .opc2 = i & 7, .access = PL0_RW, .accessfn = pmreg_access, |
5980 | .type = ARM_CP_IO, | |
5981 | .readfn = pmevcntr_readfn, .writefn = pmevcntr_writefn, | |
5982 | .raw_readfn = pmevcntr_rawread, | |
5983 | .raw_writefn = pmevcntr_rawwrite }, | |
62c7ec34 | 5984 | { .name = pmevtyper_name, .cp = 15, .crn = 14, |
5ecdd3e4 AL |
5985 | .crm = 12 | (3 & (i >> 3)), .opc1 = 0, .opc2 = i & 7, |
5986 | .access = PL0_RW, .type = ARM_CP_IO | ARM_CP_ALIAS, | |
5987 | .readfn = pmevtyper_readfn, .writefn = pmevtyper_writefn, | |
5988 | .accessfn = pmreg_access }, | |
5989 | { .name = pmevtyper_el0_name, .state = ARM_CP_STATE_AA64, | |
62c7ec34 | 5990 | .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 12 | (3 & (i >> 3)), |
5ecdd3e4 AL |
5991 | .opc2 = i & 7, .access = PL0_RW, .accessfn = pmreg_access, |
5992 | .type = ARM_CP_IO, | |
5993 | .readfn = pmevtyper_readfn, .writefn = pmevtyper_writefn, | |
5994 | .raw_writefn = pmevtyper_rawwrite }, | |
5995 | REGINFO_SENTINEL | |
5996 | }; | |
5997 | define_arm_cp_regs(cpu, pmev_regs); | |
5998 | g_free(pmevcntr_name); | |
5999 | g_free(pmevcntr_el0_name); | |
6000 | g_free(pmevtyper_name); | |
6001 | g_free(pmevtyper_el0_name); | |
6002 | } | |
776d4e5c | 6003 | ARMCPRegInfo clidr = { |
7da845b0 PM |
6004 | .name = "CLIDR", .state = ARM_CP_STATE_BOTH, |
6005 | .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = 1, | |
776d4e5c PM |
6006 | .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = cpu->clidr |
6007 | }; | |
776d4e5c | 6008 | define_one_arm_cp_reg(cpu, &clidr); |
e9aa6c21 | 6009 | define_arm_cp_regs(cpu, v7_cp_reginfo); |
50300698 | 6010 | define_debug_regs(cpu); |
7d57f408 PM |
6011 | } else { |
6012 | define_arm_cp_regs(cpu, not_v7_cp_reginfo); | |
e9aa6c21 | 6013 | } |
cad86737 AL |
6014 | if (FIELD_EX32(cpu->id_dfr0, ID_DFR0, PERFMON) >= 4 && |
6015 | FIELD_EX32(cpu->id_dfr0, ID_DFR0, PERFMON) != 0xf) { | |
6016 | ARMCPRegInfo v81_pmu_regs[] = { | |
6017 | { .name = "PMCEID2", .state = ARM_CP_STATE_AA32, | |
6018 | .cp = 15, .opc1 = 0, .crn = 9, .crm = 14, .opc2 = 4, | |
6019 | .access = PL0_R, .accessfn = pmreg_access, .type = ARM_CP_CONST, | |
6020 | .resetvalue = extract64(cpu->pmceid0, 32, 32) }, | |
6021 | { .name = "PMCEID3", .state = ARM_CP_STATE_AA32, | |
6022 | .cp = 15, .opc1 = 0, .crn = 9, .crm = 14, .opc2 = 5, | |
6023 | .access = PL0_R, .accessfn = pmreg_access, .type = ARM_CP_CONST, | |
6024 | .resetvalue = extract64(cpu->pmceid1, 32, 32) }, | |
6025 | REGINFO_SENTINEL | |
6026 | }; | |
6027 | define_arm_cp_regs(cpu, v81_pmu_regs); | |
6028 | } | |
b0d2b7d0 | 6029 | if (arm_feature(env, ARM_FEATURE_V8)) { |
e20d84c1 PM |
6030 | /* AArch64 ID registers, which all have impdef reset values. |
6031 | * Note that within the ID register ranges the unused slots | |
6032 | * must all RAZ, not UNDEF; future architecture versions may | |
6033 | * define new registers here. | |
6034 | */ | |
e60cef86 | 6035 | ARMCPRegInfo v8_idregs[] = { |
96a8b92e PM |
6036 | /* ID_AA64PFR0_EL1 is not a plain ARM_CP_CONST because we don't |
6037 | * know the right value for the GIC field until after we | |
6038 | * define these regs. | |
6039 | */ | |
e60cef86 PM |
6040 | { .name = "ID_AA64PFR0_EL1", .state = ARM_CP_STATE_AA64, |
6041 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 0, | |
96a8b92e PM |
6042 | .access = PL1_R, .type = ARM_CP_NO_RAW, |
6043 | .readfn = id_aa64pfr0_read, | |
6044 | .writefn = arm_cp_write_ignore }, | |
e60cef86 PM |
6045 | { .name = "ID_AA64PFR1_EL1", .state = ARM_CP_STATE_AA64, |
6046 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 1, | |
6047 | .access = PL1_R, .type = ARM_CP_CONST, | |
47576b94 | 6048 | .resetvalue = cpu->isar.id_aa64pfr1}, |
e20d84c1 PM |
6049 | { .name = "ID_AA64PFR2_EL1_RESERVED", .state = ARM_CP_STATE_AA64, |
6050 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 2, | |
6051 | .access = PL1_R, .type = ARM_CP_CONST, | |
6052 | .resetvalue = 0 }, | |
6053 | { .name = "ID_AA64PFR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6054 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 3, | |
6055 | .access = PL1_R, .type = ARM_CP_CONST, | |
6056 | .resetvalue = 0 }, | |
9516d772 | 6057 | { .name = "ID_AA64ZFR0_EL1", .state = ARM_CP_STATE_AA64, |
e20d84c1 PM |
6058 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 4, |
6059 | .access = PL1_R, .type = ARM_CP_CONST, | |
9516d772 | 6060 | /* At present, only SVEver == 0 is defined anyway. */ |
e20d84c1 PM |
6061 | .resetvalue = 0 }, |
6062 | { .name = "ID_AA64PFR5_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6063 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 5, | |
6064 | .access = PL1_R, .type = ARM_CP_CONST, | |
6065 | .resetvalue = 0 }, | |
6066 | { .name = "ID_AA64PFR6_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6067 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 6, | |
6068 | .access = PL1_R, .type = ARM_CP_CONST, | |
6069 | .resetvalue = 0 }, | |
6070 | { .name = "ID_AA64PFR7_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6071 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 7, | |
6072 | .access = PL1_R, .type = ARM_CP_CONST, | |
6073 | .resetvalue = 0 }, | |
e60cef86 PM |
6074 | { .name = "ID_AA64DFR0_EL1", .state = ARM_CP_STATE_AA64, |
6075 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 0, | |
6076 | .access = PL1_R, .type = ARM_CP_CONST, | |
d6f02ce3 | 6077 | .resetvalue = cpu->id_aa64dfr0 }, |
e60cef86 PM |
6078 | { .name = "ID_AA64DFR1_EL1", .state = ARM_CP_STATE_AA64, |
6079 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 1, | |
6080 | .access = PL1_R, .type = ARM_CP_CONST, | |
6081 | .resetvalue = cpu->id_aa64dfr1 }, | |
e20d84c1 PM |
6082 | { .name = "ID_AA64DFR2_EL1_RESERVED", .state = ARM_CP_STATE_AA64, |
6083 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 2, | |
6084 | .access = PL1_R, .type = ARM_CP_CONST, | |
6085 | .resetvalue = 0 }, | |
6086 | { .name = "ID_AA64DFR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6087 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 3, | |
6088 | .access = PL1_R, .type = ARM_CP_CONST, | |
6089 | .resetvalue = 0 }, | |
e60cef86 PM |
6090 | { .name = "ID_AA64AFR0_EL1", .state = ARM_CP_STATE_AA64, |
6091 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 4, | |
6092 | .access = PL1_R, .type = ARM_CP_CONST, | |
6093 | .resetvalue = cpu->id_aa64afr0 }, | |
6094 | { .name = "ID_AA64AFR1_EL1", .state = ARM_CP_STATE_AA64, | |
6095 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 5, | |
6096 | .access = PL1_R, .type = ARM_CP_CONST, | |
6097 | .resetvalue = cpu->id_aa64afr1 }, | |
e20d84c1 PM |
6098 | { .name = "ID_AA64AFR2_EL1_RESERVED", .state = ARM_CP_STATE_AA64, |
6099 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 6, | |
6100 | .access = PL1_R, .type = ARM_CP_CONST, | |
6101 | .resetvalue = 0 }, | |
6102 | { .name = "ID_AA64AFR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6103 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 7, | |
6104 | .access = PL1_R, .type = ARM_CP_CONST, | |
6105 | .resetvalue = 0 }, | |
e60cef86 PM |
6106 | { .name = "ID_AA64ISAR0_EL1", .state = ARM_CP_STATE_AA64, |
6107 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 0, | |
6108 | .access = PL1_R, .type = ARM_CP_CONST, | |
47576b94 | 6109 | .resetvalue = cpu->isar.id_aa64isar0 }, |
e60cef86 PM |
6110 | { .name = "ID_AA64ISAR1_EL1", .state = ARM_CP_STATE_AA64, |
6111 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 1, | |
6112 | .access = PL1_R, .type = ARM_CP_CONST, | |
47576b94 | 6113 | .resetvalue = cpu->isar.id_aa64isar1 }, |
e20d84c1 PM |
6114 | { .name = "ID_AA64ISAR2_EL1_RESERVED", .state = ARM_CP_STATE_AA64, |
6115 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 2, | |
6116 | .access = PL1_R, .type = ARM_CP_CONST, | |
6117 | .resetvalue = 0 }, | |
6118 | { .name = "ID_AA64ISAR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6119 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 3, | |
6120 | .access = PL1_R, .type = ARM_CP_CONST, | |
6121 | .resetvalue = 0 }, | |
6122 | { .name = "ID_AA64ISAR4_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6123 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 4, | |
6124 | .access = PL1_R, .type = ARM_CP_CONST, | |
6125 | .resetvalue = 0 }, | |
6126 | { .name = "ID_AA64ISAR5_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6127 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 5, | |
6128 | .access = PL1_R, .type = ARM_CP_CONST, | |
6129 | .resetvalue = 0 }, | |
6130 | { .name = "ID_AA64ISAR6_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6131 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 6, | |
6132 | .access = PL1_R, .type = ARM_CP_CONST, | |
6133 | .resetvalue = 0 }, | |
6134 | { .name = "ID_AA64ISAR7_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6135 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 7, | |
6136 | .access = PL1_R, .type = ARM_CP_CONST, | |
6137 | .resetvalue = 0 }, | |
e60cef86 PM |
6138 | { .name = "ID_AA64MMFR0_EL1", .state = ARM_CP_STATE_AA64, |
6139 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 0, | |
6140 | .access = PL1_R, .type = ARM_CP_CONST, | |
3dc91ddb | 6141 | .resetvalue = cpu->isar.id_aa64mmfr0 }, |
e60cef86 PM |
6142 | { .name = "ID_AA64MMFR1_EL1", .state = ARM_CP_STATE_AA64, |
6143 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 1, | |
6144 | .access = PL1_R, .type = ARM_CP_CONST, | |
3dc91ddb | 6145 | .resetvalue = cpu->isar.id_aa64mmfr1 }, |
e20d84c1 PM |
6146 | { .name = "ID_AA64MMFR2_EL1_RESERVED", .state = ARM_CP_STATE_AA64, |
6147 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 2, | |
6148 | .access = PL1_R, .type = ARM_CP_CONST, | |
6149 | .resetvalue = 0 }, | |
6150 | { .name = "ID_AA64MMFR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6151 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 3, | |
6152 | .access = PL1_R, .type = ARM_CP_CONST, | |
6153 | .resetvalue = 0 }, | |
6154 | { .name = "ID_AA64MMFR4_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6155 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 4, | |
6156 | .access = PL1_R, .type = ARM_CP_CONST, | |
6157 | .resetvalue = 0 }, | |
6158 | { .name = "ID_AA64MMFR5_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6159 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 5, | |
6160 | .access = PL1_R, .type = ARM_CP_CONST, | |
6161 | .resetvalue = 0 }, | |
6162 | { .name = "ID_AA64MMFR6_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6163 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 6, | |
6164 | .access = PL1_R, .type = ARM_CP_CONST, | |
6165 | .resetvalue = 0 }, | |
6166 | { .name = "ID_AA64MMFR7_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6167 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 7, | |
6168 | .access = PL1_R, .type = ARM_CP_CONST, | |
6169 | .resetvalue = 0 }, | |
a50c0f51 PM |
6170 | { .name = "MVFR0_EL1", .state = ARM_CP_STATE_AA64, |
6171 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 0, | |
6172 | .access = PL1_R, .type = ARM_CP_CONST, | |
47576b94 | 6173 | .resetvalue = cpu->isar.mvfr0 }, |
a50c0f51 PM |
6174 | { .name = "MVFR1_EL1", .state = ARM_CP_STATE_AA64, |
6175 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 1, | |
6176 | .access = PL1_R, .type = ARM_CP_CONST, | |
47576b94 | 6177 | .resetvalue = cpu->isar.mvfr1 }, |
a50c0f51 PM |
6178 | { .name = "MVFR2_EL1", .state = ARM_CP_STATE_AA64, |
6179 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 2, | |
6180 | .access = PL1_R, .type = ARM_CP_CONST, | |
47576b94 | 6181 | .resetvalue = cpu->isar.mvfr2 }, |
e20d84c1 PM |
6182 | { .name = "MVFR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64, |
6183 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 3, | |
6184 | .access = PL1_R, .type = ARM_CP_CONST, | |
6185 | .resetvalue = 0 }, | |
6186 | { .name = "MVFR4_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6187 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 4, | |
6188 | .access = PL1_R, .type = ARM_CP_CONST, | |
6189 | .resetvalue = 0 }, | |
6190 | { .name = "MVFR5_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6191 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 5, | |
6192 | .access = PL1_R, .type = ARM_CP_CONST, | |
6193 | .resetvalue = 0 }, | |
6194 | { .name = "MVFR6_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6195 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 6, | |
6196 | .access = PL1_R, .type = ARM_CP_CONST, | |
6197 | .resetvalue = 0 }, | |
6198 | { .name = "MVFR7_EL1_RESERVED", .state = ARM_CP_STATE_AA64, | |
6199 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 7, | |
6200 | .access = PL1_R, .type = ARM_CP_CONST, | |
6201 | .resetvalue = 0 }, | |
4054bfa9 AF |
6202 | { .name = "PMCEID0", .state = ARM_CP_STATE_AA32, |
6203 | .cp = 15, .opc1 = 0, .crn = 9, .crm = 12, .opc2 = 6, | |
6204 | .access = PL0_R, .accessfn = pmreg_access, .type = ARM_CP_CONST, | |
cad86737 | 6205 | .resetvalue = extract64(cpu->pmceid0, 0, 32) }, |
4054bfa9 AF |
6206 | { .name = "PMCEID0_EL0", .state = ARM_CP_STATE_AA64, |
6207 | .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 6, | |
6208 | .access = PL0_R, .accessfn = pmreg_access, .type = ARM_CP_CONST, | |
6209 | .resetvalue = cpu->pmceid0 }, | |
6210 | { .name = "PMCEID1", .state = ARM_CP_STATE_AA32, | |
6211 | .cp = 15, .opc1 = 0, .crn = 9, .crm = 12, .opc2 = 7, | |
6212 | .access = PL0_R, .accessfn = pmreg_access, .type = ARM_CP_CONST, | |
cad86737 | 6213 | .resetvalue = extract64(cpu->pmceid1, 0, 32) }, |
4054bfa9 AF |
6214 | { .name = "PMCEID1_EL0", .state = ARM_CP_STATE_AA64, |
6215 | .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 7, | |
6216 | .access = PL0_R, .accessfn = pmreg_access, .type = ARM_CP_CONST, | |
6217 | .resetvalue = cpu->pmceid1 }, | |
e60cef86 PM |
6218 | REGINFO_SENTINEL |
6219 | }; | |
6c5c0fec AB |
6220 | #ifdef CONFIG_USER_ONLY |
6221 | ARMCPRegUserSpaceInfo v8_user_idregs[] = { | |
6222 | { .name = "ID_AA64PFR0_EL1", | |
6223 | .exported_bits = 0x000f000f00ff0000, | |
6224 | .fixed_bits = 0x0000000000000011 }, | |
6225 | { .name = "ID_AA64PFR1_EL1", | |
6226 | .exported_bits = 0x00000000000000f0 }, | |
d040242e AB |
6227 | { .name = "ID_AA64PFR*_EL1_RESERVED", |
6228 | .is_glob = true }, | |
6c5c0fec AB |
6229 | { .name = "ID_AA64ZFR0_EL1" }, |
6230 | { .name = "ID_AA64MMFR0_EL1", | |
6231 | .fixed_bits = 0x00000000ff000000 }, | |
6232 | { .name = "ID_AA64MMFR1_EL1" }, | |
d040242e AB |
6233 | { .name = "ID_AA64MMFR*_EL1_RESERVED", |
6234 | .is_glob = true }, | |
6c5c0fec AB |
6235 | { .name = "ID_AA64DFR0_EL1", |
6236 | .fixed_bits = 0x0000000000000006 }, | |
6237 | { .name = "ID_AA64DFR1_EL1" }, | |
d040242e AB |
6238 | { .name = "ID_AA64DFR*_EL1_RESERVED", |
6239 | .is_glob = true }, | |
6240 | { .name = "ID_AA64AFR*", | |
6241 | .is_glob = true }, | |
6c5c0fec AB |
6242 | { .name = "ID_AA64ISAR0_EL1", |
6243 | .exported_bits = 0x00fffffff0fffff0 }, | |
6244 | { .name = "ID_AA64ISAR1_EL1", | |
6245 | .exported_bits = 0x000000f0ffffffff }, | |
d040242e AB |
6246 | { .name = "ID_AA64ISAR*_EL1_RESERVED", |
6247 | .is_glob = true }, | |
6c5c0fec AB |
6248 | REGUSERINFO_SENTINEL |
6249 | }; | |
6250 | modify_arm_cp_regs(v8_idregs, v8_user_idregs); | |
6251 | #endif | |
be8e8128 GB |
6252 | /* RVBAR_EL1 is only implemented if EL1 is the highest EL */ |
6253 | if (!arm_feature(env, ARM_FEATURE_EL3) && | |
6254 | !arm_feature(env, ARM_FEATURE_EL2)) { | |
6255 | ARMCPRegInfo rvbar = { | |
6256 | .name = "RVBAR_EL1", .state = ARM_CP_STATE_AA64, | |
6257 | .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 0, .opc2 = 1, | |
6258 | .type = ARM_CP_CONST, .access = PL1_R, .resetvalue = cpu->rvbar | |
6259 | }; | |
6260 | define_one_arm_cp_reg(cpu, &rvbar); | |
6261 | } | |
e60cef86 | 6262 | define_arm_cp_regs(cpu, v8_idregs); |
b0d2b7d0 PM |
6263 | define_arm_cp_regs(cpu, v8_cp_reginfo); |
6264 | } | |
3b685ba7 | 6265 | if (arm_feature(env, ARM_FEATURE_EL2)) { |
f0d574d6 | 6266 | uint64_t vmpidr_def = mpidr_read_val(env); |
731de9e6 EI |
6267 | ARMCPRegInfo vpidr_regs[] = { |
6268 | { .name = "VPIDR", .state = ARM_CP_STATE_AA32, | |
6269 | .cp = 15, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 0, | |
6270 | .access = PL2_RW, .accessfn = access_el3_aa32ns, | |
36476562 PM |
6271 | .resetvalue = cpu->midr, .type = ARM_CP_ALIAS, |
6272 | .fieldoffset = offsetoflow32(CPUARMState, cp15.vpidr_el2) }, | |
731de9e6 EI |
6273 | { .name = "VPIDR_EL2", .state = ARM_CP_STATE_AA64, |
6274 | .opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 0, | |
6275 | .access = PL2_RW, .resetvalue = cpu->midr, | |
6276 | .fieldoffset = offsetof(CPUARMState, cp15.vpidr_el2) }, | |
f0d574d6 EI |
6277 | { .name = "VMPIDR", .state = ARM_CP_STATE_AA32, |
6278 | .cp = 15, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 5, | |
6279 | .access = PL2_RW, .accessfn = access_el3_aa32ns, | |
36476562 PM |
6280 | .resetvalue = vmpidr_def, .type = ARM_CP_ALIAS, |
6281 | .fieldoffset = offsetoflow32(CPUARMState, cp15.vmpidr_el2) }, | |
f0d574d6 EI |
6282 | { .name = "VMPIDR_EL2", .state = ARM_CP_STATE_AA64, |
6283 | .opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 5, | |
6284 | .access = PL2_RW, | |
6285 | .resetvalue = vmpidr_def, | |
6286 | .fieldoffset = offsetof(CPUARMState, cp15.vmpidr_el2) }, | |
731de9e6 EI |
6287 | REGINFO_SENTINEL |
6288 | }; | |
6289 | define_arm_cp_regs(cpu, vpidr_regs); | |
4771cd01 | 6290 | define_arm_cp_regs(cpu, el2_cp_reginfo); |
ce4afed8 PM |
6291 | if (arm_feature(env, ARM_FEATURE_V8)) { |
6292 | define_arm_cp_regs(cpu, el2_v8_cp_reginfo); | |
6293 | } | |
be8e8128 GB |
6294 | /* RVBAR_EL2 is only implemented if EL2 is the highest EL */ |
6295 | if (!arm_feature(env, ARM_FEATURE_EL3)) { | |
6296 | ARMCPRegInfo rvbar = { | |
6297 | .name = "RVBAR_EL2", .state = ARM_CP_STATE_AA64, | |
6298 | .opc0 = 3, .opc1 = 4, .crn = 12, .crm = 0, .opc2 = 1, | |
6299 | .type = ARM_CP_CONST, .access = PL2_R, .resetvalue = cpu->rvbar | |
6300 | }; | |
6301 | define_one_arm_cp_reg(cpu, &rvbar); | |
6302 | } | |
d42e3c26 EI |
6303 | } else { |
6304 | /* If EL2 is missing but higher ELs are enabled, we need to | |
6305 | * register the no_el2 reginfos. | |
6306 | */ | |
6307 | if (arm_feature(env, ARM_FEATURE_EL3)) { | |
f0d574d6 EI |
6308 | /* When EL3 exists but not EL2, VPIDR and VMPIDR take the value |
6309 | * of MIDR_EL1 and MPIDR_EL1. | |
731de9e6 EI |
6310 | */ |
6311 | ARMCPRegInfo vpidr_regs[] = { | |
6312 | { .name = "VPIDR_EL2", .state = ARM_CP_STATE_BOTH, | |
6313 | .opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 0, | |
6314 | .access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any, | |
6315 | .type = ARM_CP_CONST, .resetvalue = cpu->midr, | |
6316 | .fieldoffset = offsetof(CPUARMState, cp15.vpidr_el2) }, | |
f0d574d6 EI |
6317 | { .name = "VMPIDR_EL2", .state = ARM_CP_STATE_BOTH, |
6318 | .opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 5, | |
6319 | .access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any, | |
6320 | .type = ARM_CP_NO_RAW, | |
6321 | .writefn = arm_cp_write_ignore, .readfn = mpidr_read }, | |
731de9e6 EI |
6322 | REGINFO_SENTINEL |
6323 | }; | |
6324 | define_arm_cp_regs(cpu, vpidr_regs); | |
4771cd01 | 6325 | define_arm_cp_regs(cpu, el3_no_el2_cp_reginfo); |
ce4afed8 PM |
6326 | if (arm_feature(env, ARM_FEATURE_V8)) { |
6327 | define_arm_cp_regs(cpu, el3_no_el2_v8_cp_reginfo); | |
6328 | } | |
d42e3c26 | 6329 | } |
3b685ba7 | 6330 | } |
81547d66 | 6331 | if (arm_feature(env, ARM_FEATURE_EL3)) { |
0f1a3b24 | 6332 | define_arm_cp_regs(cpu, el3_cp_reginfo); |
e24fdd23 PM |
6333 | ARMCPRegInfo el3_regs[] = { |
6334 | { .name = "RVBAR_EL3", .state = ARM_CP_STATE_AA64, | |
6335 | .opc0 = 3, .opc1 = 6, .crn = 12, .crm = 0, .opc2 = 1, | |
6336 | .type = ARM_CP_CONST, .access = PL3_R, .resetvalue = cpu->rvbar }, | |
6337 | { .name = "SCTLR_EL3", .state = ARM_CP_STATE_AA64, | |
6338 | .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 0, .opc2 = 0, | |
6339 | .access = PL3_RW, | |
6340 | .raw_writefn = raw_write, .writefn = sctlr_write, | |
6341 | .fieldoffset = offsetof(CPUARMState, cp15.sctlr_el[3]), | |
6342 | .resetvalue = cpu->reset_sctlr }, | |
6343 | REGINFO_SENTINEL | |
be8e8128 | 6344 | }; |
e24fdd23 PM |
6345 | |
6346 | define_arm_cp_regs(cpu, el3_regs); | |
81547d66 | 6347 | } |
2f027fc5 PM |
6348 | /* The behaviour of NSACR is sufficiently various that we don't |
6349 | * try to describe it in a single reginfo: | |
6350 | * if EL3 is 64 bit, then trap to EL3 from S EL1, | |
6351 | * reads as constant 0xc00 from NS EL1 and NS EL2 | |
6352 | * if EL3 is 32 bit, then RW at EL3, RO at NS EL1 and NS EL2 | |
6353 | * if v7 without EL3, register doesn't exist | |
6354 | * if v8 without EL3, reads as constant 0xc00 from NS EL1 and NS EL2 | |
6355 | */ | |
6356 | if (arm_feature(env, ARM_FEATURE_EL3)) { | |
6357 | if (arm_feature(env, ARM_FEATURE_AARCH64)) { | |
6358 | ARMCPRegInfo nsacr = { | |
6359 | .name = "NSACR", .type = ARM_CP_CONST, | |
6360 | .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 2, | |
6361 | .access = PL1_RW, .accessfn = nsacr_access, | |
6362 | .resetvalue = 0xc00 | |
6363 | }; | |
6364 | define_one_arm_cp_reg(cpu, &nsacr); | |
6365 | } else { | |
6366 | ARMCPRegInfo nsacr = { | |
6367 | .name = "NSACR", | |
6368 | .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 2, | |
6369 | .access = PL3_RW | PL1_R, | |
6370 | .resetvalue = 0, | |
6371 | .fieldoffset = offsetof(CPUARMState, cp15.nsacr) | |
6372 | }; | |
6373 | define_one_arm_cp_reg(cpu, &nsacr); | |
6374 | } | |
6375 | } else { | |
6376 | if (arm_feature(env, ARM_FEATURE_V8)) { | |
6377 | ARMCPRegInfo nsacr = { | |
6378 | .name = "NSACR", .type = ARM_CP_CONST, | |
6379 | .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 2, | |
6380 | .access = PL1_R, | |
6381 | .resetvalue = 0xc00 | |
6382 | }; | |
6383 | define_one_arm_cp_reg(cpu, &nsacr); | |
6384 | } | |
6385 | } | |
6386 | ||
452a0955 | 6387 | if (arm_feature(env, ARM_FEATURE_PMSA)) { |
6cb0b013 PC |
6388 | if (arm_feature(env, ARM_FEATURE_V6)) { |
6389 | /* PMSAv6 not implemented */ | |
6390 | assert(arm_feature(env, ARM_FEATURE_V7)); | |
6391 | define_arm_cp_regs(cpu, vmsa_pmsa_cp_reginfo); | |
6392 | define_arm_cp_regs(cpu, pmsav7_cp_reginfo); | |
6393 | } else { | |
6394 | define_arm_cp_regs(cpu, pmsav5_cp_reginfo); | |
6395 | } | |
18032bec | 6396 | } else { |
8e5d75c9 | 6397 | define_arm_cp_regs(cpu, vmsa_pmsa_cp_reginfo); |
18032bec | 6398 | define_arm_cp_regs(cpu, vmsa_cp_reginfo); |
ab638a32 RH |
6399 | /* TTCBR2 is introduced with ARMv8.2-A32HPD. */ |
6400 | if (FIELD_EX32(cpu->id_mmfr4, ID_MMFR4, HPDS) != 0) { | |
6401 | define_one_arm_cp_reg(cpu, &ttbcr2_reginfo); | |
6402 | } | |
18032bec | 6403 | } |
c326b979 PM |
6404 | if (arm_feature(env, ARM_FEATURE_THUMB2EE)) { |
6405 | define_arm_cp_regs(cpu, t2ee_cp_reginfo); | |
6406 | } | |
6cc7a3ae PM |
6407 | if (arm_feature(env, ARM_FEATURE_GENERIC_TIMER)) { |
6408 | define_arm_cp_regs(cpu, generic_timer_cp_reginfo); | |
6409 | } | |
4a501606 PM |
6410 | if (arm_feature(env, ARM_FEATURE_VAPA)) { |
6411 | define_arm_cp_regs(cpu, vapa_cp_reginfo); | |
6412 | } | |
c4804214 PM |
6413 | if (arm_feature(env, ARM_FEATURE_CACHE_TEST_CLEAN)) { |
6414 | define_arm_cp_regs(cpu, cache_test_clean_cp_reginfo); | |
6415 | } | |
6416 | if (arm_feature(env, ARM_FEATURE_CACHE_DIRTY_REG)) { | |
6417 | define_arm_cp_regs(cpu, cache_dirty_status_cp_reginfo); | |
6418 | } | |
6419 | if (arm_feature(env, ARM_FEATURE_CACHE_BLOCK_OPS)) { | |
6420 | define_arm_cp_regs(cpu, cache_block_ops_cp_reginfo); | |
6421 | } | |
18032bec PM |
6422 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) { |
6423 | define_arm_cp_regs(cpu, omap_cp_reginfo); | |
6424 | } | |
34f90529 PM |
6425 | if (arm_feature(env, ARM_FEATURE_STRONGARM)) { |
6426 | define_arm_cp_regs(cpu, strongarm_cp_reginfo); | |
6427 | } | |
1047b9d7 PM |
6428 | if (arm_feature(env, ARM_FEATURE_XSCALE)) { |
6429 | define_arm_cp_regs(cpu, xscale_cp_reginfo); | |
6430 | } | |
6431 | if (arm_feature(env, ARM_FEATURE_DUMMY_C15_REGS)) { | |
6432 | define_arm_cp_regs(cpu, dummy_c15_cp_reginfo); | |
6433 | } | |
7ac681cf PM |
6434 | if (arm_feature(env, ARM_FEATURE_LPAE)) { |
6435 | define_arm_cp_regs(cpu, lpae_cp_reginfo); | |
6436 | } | |
7884849c PM |
6437 | /* Slightly awkwardly, the OMAP and StrongARM cores need all of |
6438 | * cp15 crn=0 to be writes-ignored, whereas for other cores they should | |
6439 | * be read-only (ie write causes UNDEF exception). | |
6440 | */ | |
6441 | { | |
00a29f3d PM |
6442 | ARMCPRegInfo id_pre_v8_midr_cp_reginfo[] = { |
6443 | /* Pre-v8 MIDR space. | |
6444 | * Note that the MIDR isn't a simple constant register because | |
7884849c PM |
6445 | * of the TI925 behaviour where writes to another register can |
6446 | * cause the MIDR value to change. | |
97ce8d61 PC |
6447 | * |
6448 | * Unimplemented registers in the c15 0 0 0 space default to | |
6449 | * MIDR. Define MIDR first as this entire space, then CTR, TCMTR | |
6450 | * and friends override accordingly. | |
7884849c PM |
6451 | */ |
6452 | { .name = "MIDR", | |
97ce8d61 | 6453 | .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = CP_ANY, |
7884849c | 6454 | .access = PL1_R, .resetvalue = cpu->midr, |
d4e6df63 | 6455 | .writefn = arm_cp_write_ignore, .raw_writefn = raw_write, |
731de9e6 | 6456 | .readfn = midr_read, |
97ce8d61 PC |
6457 | .fieldoffset = offsetof(CPUARMState, cp15.c0_cpuid), |
6458 | .type = ARM_CP_OVERRIDE }, | |
7884849c PM |
6459 | /* crn = 0 op1 = 0 crm = 3..7 : currently unassigned; we RAZ. */ |
6460 | { .name = "DUMMY", | |
6461 | .cp = 15, .crn = 0, .crm = 3, .opc1 = 0, .opc2 = CP_ANY, | |
6462 | .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
6463 | { .name = "DUMMY", | |
6464 | .cp = 15, .crn = 0, .crm = 4, .opc1 = 0, .opc2 = CP_ANY, | |
6465 | .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
6466 | { .name = "DUMMY", | |
6467 | .cp = 15, .crn = 0, .crm = 5, .opc1 = 0, .opc2 = CP_ANY, | |
6468 | .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
6469 | { .name = "DUMMY", | |
6470 | .cp = 15, .crn = 0, .crm = 6, .opc1 = 0, .opc2 = CP_ANY, | |
6471 | .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
6472 | { .name = "DUMMY", | |
6473 | .cp = 15, .crn = 0, .crm = 7, .opc1 = 0, .opc2 = CP_ANY, | |
6474 | .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
6475 | REGINFO_SENTINEL | |
6476 | }; | |
00a29f3d | 6477 | ARMCPRegInfo id_v8_midr_cp_reginfo[] = { |
00a29f3d PM |
6478 | { .name = "MIDR_EL1", .state = ARM_CP_STATE_BOTH, |
6479 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 0, .opc2 = 0, | |
731de9e6 EI |
6480 | .access = PL1_R, .type = ARM_CP_NO_RAW, .resetvalue = cpu->midr, |
6481 | .fieldoffset = offsetof(CPUARMState, cp15.c0_cpuid), | |
6482 | .readfn = midr_read }, | |
ac00c79f SF |
6483 | /* crn = 0 op1 = 0 crm = 0 op2 = 4,7 : AArch32 aliases of MIDR */ |
6484 | { .name = "MIDR", .type = ARM_CP_ALIAS | ARM_CP_CONST, | |
6485 | .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 4, | |
6486 | .access = PL1_R, .resetvalue = cpu->midr }, | |
6487 | { .name = "MIDR", .type = ARM_CP_ALIAS | ARM_CP_CONST, | |
6488 | .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 7, | |
6489 | .access = PL1_R, .resetvalue = cpu->midr }, | |
00a29f3d PM |
6490 | { .name = "REVIDR_EL1", .state = ARM_CP_STATE_BOTH, |
6491 | .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 0, .opc2 = 6, | |
13b72b2b | 6492 | .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = cpu->revidr }, |
00a29f3d PM |
6493 | REGINFO_SENTINEL |
6494 | }; | |
6495 | ARMCPRegInfo id_cp_reginfo[] = { | |
6496 | /* These are common to v8 and pre-v8 */ | |
6497 | { .name = "CTR", | |
6498 | .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 1, | |
6499 | .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = cpu->ctr }, | |
6500 | { .name = "CTR_EL0", .state = ARM_CP_STATE_AA64, | |
6501 | .opc0 = 3, .opc1 = 3, .opc2 = 1, .crn = 0, .crm = 0, | |
6502 | .access = PL0_R, .accessfn = ctr_el0_access, | |
6503 | .type = ARM_CP_CONST, .resetvalue = cpu->ctr }, | |
6504 | /* TCMTR and TLBTR exist in v8 but have no 64-bit versions */ | |
6505 | { .name = "TCMTR", | |
6506 | .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 2, | |
6507 | .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 }, | |
00a29f3d PM |
6508 | REGINFO_SENTINEL |
6509 | }; | |
8085ce63 PC |
6510 | /* TLBTR is specific to VMSA */ |
6511 | ARMCPRegInfo id_tlbtr_reginfo = { | |
6512 | .name = "TLBTR", | |
6513 | .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 3, | |
6514 | .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0, | |
6515 | }; | |
3281af81 PC |
6516 | /* MPUIR is specific to PMSA V6+ */ |
6517 | ARMCPRegInfo id_mpuir_reginfo = { | |
6518 | .name = "MPUIR", | |
6519 | .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 4, | |
6520 | .access = PL1_R, .type = ARM_CP_CONST, | |
6521 | .resetvalue = cpu->pmsav7_dregion << 8 | |
6522 | }; | |
7884849c PM |
6523 | ARMCPRegInfo crn0_wi_reginfo = { |
6524 | .name = "CRN0_WI", .cp = 15, .crn = 0, .crm = CP_ANY, | |
6525 | .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_W, | |
6526 | .type = ARM_CP_NOP | ARM_CP_OVERRIDE | |
6527 | }; | |
6c5c0fec AB |
6528 | #ifdef CONFIG_USER_ONLY |
6529 | ARMCPRegUserSpaceInfo id_v8_user_midr_cp_reginfo[] = { | |
6530 | { .name = "MIDR_EL1", | |
6531 | .exported_bits = 0x00000000ffffffff }, | |
6532 | { .name = "REVIDR_EL1" }, | |
6533 | REGUSERINFO_SENTINEL | |
6534 | }; | |
6535 | modify_arm_cp_regs(id_v8_midr_cp_reginfo, id_v8_user_midr_cp_reginfo); | |
6536 | #endif | |
7884849c PM |
6537 | if (arm_feature(env, ARM_FEATURE_OMAPCP) || |
6538 | arm_feature(env, ARM_FEATURE_STRONGARM)) { | |
6539 | ARMCPRegInfo *r; | |
6540 | /* Register the blanket "writes ignored" value first to cover the | |
a703eda1 PC |
6541 | * whole space. Then update the specific ID registers to allow write |
6542 | * access, so that they ignore writes rather than causing them to | |
6543 | * UNDEF. | |
7884849c PM |
6544 | */ |
6545 | define_one_arm_cp_reg(cpu, &crn0_wi_reginfo); | |
00a29f3d PM |
6546 | for (r = id_pre_v8_midr_cp_reginfo; |
6547 | r->type != ARM_CP_SENTINEL; r++) { | |
6548 | r->access = PL1_RW; | |
6549 | } | |
7884849c PM |
6550 | for (r = id_cp_reginfo; r->type != ARM_CP_SENTINEL; r++) { |
6551 | r->access = PL1_RW; | |
7884849c | 6552 | } |
10006112 | 6553 | id_mpuir_reginfo.access = PL1_RW; |
3281af81 | 6554 | id_tlbtr_reginfo.access = PL1_RW; |
7884849c | 6555 | } |
00a29f3d PM |
6556 | if (arm_feature(env, ARM_FEATURE_V8)) { |
6557 | define_arm_cp_regs(cpu, id_v8_midr_cp_reginfo); | |
6558 | } else { | |
6559 | define_arm_cp_regs(cpu, id_pre_v8_midr_cp_reginfo); | |
6560 | } | |
a703eda1 | 6561 | define_arm_cp_regs(cpu, id_cp_reginfo); |
452a0955 | 6562 | if (!arm_feature(env, ARM_FEATURE_PMSA)) { |
8085ce63 | 6563 | define_one_arm_cp_reg(cpu, &id_tlbtr_reginfo); |
3281af81 PC |
6564 | } else if (arm_feature(env, ARM_FEATURE_V7)) { |
6565 | define_one_arm_cp_reg(cpu, &id_mpuir_reginfo); | |
8085ce63 | 6566 | } |
7884849c PM |
6567 | } |
6568 | ||
97ce8d61 | 6569 | if (arm_feature(env, ARM_FEATURE_MPIDR)) { |
52264166 AB |
6570 | ARMCPRegInfo mpidr_cp_reginfo[] = { |
6571 | { .name = "MPIDR_EL1", .state = ARM_CP_STATE_BOTH, | |
6572 | .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 5, | |
6573 | .access = PL1_R, .readfn = mpidr_read, .type = ARM_CP_NO_RAW }, | |
6574 | REGINFO_SENTINEL | |
6575 | }; | |
6576 | #ifdef CONFIG_USER_ONLY | |
6577 | ARMCPRegUserSpaceInfo mpidr_user_cp_reginfo[] = { | |
6578 | { .name = "MPIDR_EL1", | |
6579 | .fixed_bits = 0x0000000080000000 }, | |
6580 | REGUSERINFO_SENTINEL | |
6581 | }; | |
6582 | modify_arm_cp_regs(mpidr_cp_reginfo, mpidr_user_cp_reginfo); | |
6583 | #endif | |
97ce8d61 PC |
6584 | define_arm_cp_regs(cpu, mpidr_cp_reginfo); |
6585 | } | |
6586 | ||
2771db27 | 6587 | if (arm_feature(env, ARM_FEATURE_AUXCR)) { |
834a6c69 PM |
6588 | ARMCPRegInfo auxcr_reginfo[] = { |
6589 | { .name = "ACTLR_EL1", .state = ARM_CP_STATE_BOTH, | |
6590 | .opc0 = 3, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 1, | |
6591 | .access = PL1_RW, .type = ARM_CP_CONST, | |
6592 | .resetvalue = cpu->reset_auxcr }, | |
6593 | { .name = "ACTLR_EL2", .state = ARM_CP_STATE_BOTH, | |
6594 | .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 0, .opc2 = 1, | |
6595 | .access = PL2_RW, .type = ARM_CP_CONST, | |
6596 | .resetvalue = 0 }, | |
6597 | { .name = "ACTLR_EL3", .state = ARM_CP_STATE_AA64, | |
6598 | .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 0, .opc2 = 1, | |
6599 | .access = PL3_RW, .type = ARM_CP_CONST, | |
6600 | .resetvalue = 0 }, | |
6601 | REGINFO_SENTINEL | |
2771db27 | 6602 | }; |
834a6c69 | 6603 | define_arm_cp_regs(cpu, auxcr_reginfo); |
0e0456ab PM |
6604 | if (arm_feature(env, ARM_FEATURE_V8)) { |
6605 | /* HACTLR2 maps to ACTLR_EL2[63:32] and is not in ARMv7 */ | |
6606 | ARMCPRegInfo hactlr2_reginfo = { | |
6607 | .name = "HACTLR2", .state = ARM_CP_STATE_AA32, | |
6608 | .cp = 15, .opc1 = 4, .crn = 1, .crm = 0, .opc2 = 3, | |
6609 | .access = PL2_RW, .type = ARM_CP_CONST, | |
6610 | .resetvalue = 0 | |
6611 | }; | |
6612 | define_one_arm_cp_reg(cpu, &hactlr2_reginfo); | |
6613 | } | |
2771db27 PM |
6614 | } |
6615 | ||
d8ba780b | 6616 | if (arm_feature(env, ARM_FEATURE_CBAR)) { |
f318cec6 PM |
6617 | if (arm_feature(env, ARM_FEATURE_AARCH64)) { |
6618 | /* 32 bit view is [31:18] 0...0 [43:32]. */ | |
6619 | uint32_t cbar32 = (extract64(cpu->reset_cbar, 18, 14) << 18) | |
6620 | | extract64(cpu->reset_cbar, 32, 12); | |
6621 | ARMCPRegInfo cbar_reginfo[] = { | |
6622 | { .name = "CBAR", | |
6623 | .type = ARM_CP_CONST, | |
6624 | .cp = 15, .crn = 15, .crm = 0, .opc1 = 4, .opc2 = 0, | |
6625 | .access = PL1_R, .resetvalue = cpu->reset_cbar }, | |
6626 | { .name = "CBAR_EL1", .state = ARM_CP_STATE_AA64, | |
6627 | .type = ARM_CP_CONST, | |
6628 | .opc0 = 3, .opc1 = 1, .crn = 15, .crm = 3, .opc2 = 0, | |
6629 | .access = PL1_R, .resetvalue = cbar32 }, | |
6630 | REGINFO_SENTINEL | |
6631 | }; | |
6632 | /* We don't implement a r/w 64 bit CBAR currently */ | |
6633 | assert(arm_feature(env, ARM_FEATURE_CBAR_RO)); | |
6634 | define_arm_cp_regs(cpu, cbar_reginfo); | |
6635 | } else { | |
6636 | ARMCPRegInfo cbar = { | |
6637 | .name = "CBAR", | |
6638 | .cp = 15, .crn = 15, .crm = 0, .opc1 = 4, .opc2 = 0, | |
6639 | .access = PL1_R|PL3_W, .resetvalue = cpu->reset_cbar, | |
6640 | .fieldoffset = offsetof(CPUARMState, | |
6641 | cp15.c15_config_base_address) | |
6642 | }; | |
6643 | if (arm_feature(env, ARM_FEATURE_CBAR_RO)) { | |
6644 | cbar.access = PL1_R; | |
6645 | cbar.fieldoffset = 0; | |
6646 | cbar.type = ARM_CP_CONST; | |
6647 | } | |
6648 | define_one_arm_cp_reg(cpu, &cbar); | |
6649 | } | |
d8ba780b PC |
6650 | } |
6651 | ||
91db4642 CLG |
6652 | if (arm_feature(env, ARM_FEATURE_VBAR)) { |
6653 | ARMCPRegInfo vbar_cp_reginfo[] = { | |
6654 | { .name = "VBAR", .state = ARM_CP_STATE_BOTH, | |
6655 | .opc0 = 3, .crn = 12, .crm = 0, .opc1 = 0, .opc2 = 0, | |
6656 | .access = PL1_RW, .writefn = vbar_write, | |
6657 | .bank_fieldoffsets = { offsetof(CPUARMState, cp15.vbar_s), | |
6658 | offsetof(CPUARMState, cp15.vbar_ns) }, | |
6659 | .resetvalue = 0 }, | |
6660 | REGINFO_SENTINEL | |
6661 | }; | |
6662 | define_arm_cp_regs(cpu, vbar_cp_reginfo); | |
6663 | } | |
6664 | ||
2771db27 PM |
6665 | /* Generic registers whose values depend on the implementation */ |
6666 | { | |
6667 | ARMCPRegInfo sctlr = { | |
5ebafdf3 | 6668 | .name = "SCTLR", .state = ARM_CP_STATE_BOTH, |
137feaa9 FA |
6669 | .opc0 = 3, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 0, |
6670 | .access = PL1_RW, | |
6671 | .bank_fieldoffsets = { offsetof(CPUARMState, cp15.sctlr_s), | |
6672 | offsetof(CPUARMState, cp15.sctlr_ns) }, | |
d4e6df63 PM |
6673 | .writefn = sctlr_write, .resetvalue = cpu->reset_sctlr, |
6674 | .raw_writefn = raw_write, | |
2771db27 PM |
6675 | }; |
6676 | if (arm_feature(env, ARM_FEATURE_XSCALE)) { | |
6677 | /* Normally we would always end the TB on an SCTLR write, but Linux | |
6678 | * arch/arm/mach-pxa/sleep.S expects two instructions following | |
6679 | * an MMU enable to execute from cache. Imitate this behaviour. | |
6680 | */ | |
6681 | sctlr.type |= ARM_CP_SUPPRESS_TB_END; | |
6682 | } | |
6683 | define_one_arm_cp_reg(cpu, &sctlr); | |
6684 | } | |
5be5e8ed | 6685 | |
2d7137c1 RH |
6686 | if (cpu_isar_feature(aa64_lor, cpu)) { |
6687 | /* | |
6688 | * A trivial implementation of ARMv8.1-LOR leaves all of these | |
6689 | * registers fixed at 0, which indicates that there are zero | |
6690 | * supported Limited Ordering regions. | |
6691 | */ | |
6692 | static const ARMCPRegInfo lor_reginfo[] = { | |
6693 | { .name = "LORSA_EL1", .state = ARM_CP_STATE_AA64, | |
6694 | .opc0 = 3, .opc1 = 0, .crn = 10, .crm = 4, .opc2 = 0, | |
6695 | .access = PL1_RW, .accessfn = access_lor_other, | |
6696 | .type = ARM_CP_CONST, .resetvalue = 0 }, | |
6697 | { .name = "LOREA_EL1", .state = ARM_CP_STATE_AA64, | |
6698 | .opc0 = 3, .opc1 = 0, .crn = 10, .crm = 4, .opc2 = 1, | |
6699 | .access = PL1_RW, .accessfn = access_lor_other, | |
6700 | .type = ARM_CP_CONST, .resetvalue = 0 }, | |
6701 | { .name = "LORN_EL1", .state = ARM_CP_STATE_AA64, | |
6702 | .opc0 = 3, .opc1 = 0, .crn = 10, .crm = 4, .opc2 = 2, | |
6703 | .access = PL1_RW, .accessfn = access_lor_other, | |
6704 | .type = ARM_CP_CONST, .resetvalue = 0 }, | |
6705 | { .name = "LORC_EL1", .state = ARM_CP_STATE_AA64, | |
6706 | .opc0 = 3, .opc1 = 0, .crn = 10, .crm = 4, .opc2 = 3, | |
6707 | .access = PL1_RW, .accessfn = access_lor_other, | |
6708 | .type = ARM_CP_CONST, .resetvalue = 0 }, | |
6709 | { .name = "LORID_EL1", .state = ARM_CP_STATE_AA64, | |
6710 | .opc0 = 3, .opc1 = 0, .crn = 10, .crm = 4, .opc2 = 7, | |
6711 | .access = PL1_R, .accessfn = access_lorid, | |
6712 | .type = ARM_CP_CONST, .resetvalue = 0 }, | |
6713 | REGINFO_SENTINEL | |
6714 | }; | |
6715 | define_arm_cp_regs(cpu, lor_reginfo); | |
6716 | } | |
6717 | ||
cd208a1c | 6718 | if (cpu_isar_feature(aa64_sve, cpu)) { |
5be5e8ed RH |
6719 | define_one_arm_cp_reg(cpu, &zcr_el1_reginfo); |
6720 | if (arm_feature(env, ARM_FEATURE_EL2)) { | |
6721 | define_one_arm_cp_reg(cpu, &zcr_el2_reginfo); | |
6722 | } else { | |
6723 | define_one_arm_cp_reg(cpu, &zcr_no_el2_reginfo); | |
6724 | } | |
6725 | if (arm_feature(env, ARM_FEATURE_EL3)) { | |
6726 | define_one_arm_cp_reg(cpu, &zcr_el3_reginfo); | |
6727 | } | |
6728 | } | |
967aa94f RH |
6729 | |
6730 | #ifdef TARGET_AARCH64 | |
6731 | if (cpu_isar_feature(aa64_pauth, cpu)) { | |
6732 | define_arm_cp_regs(cpu, pauth_reginfo); | |
6733 | } | |
de390645 RH |
6734 | if (cpu_isar_feature(aa64_rndr, cpu)) { |
6735 | define_arm_cp_regs(cpu, rndr_reginfo); | |
6736 | } | |
967aa94f | 6737 | #endif |
cb570bd3 RH |
6738 | |
6739 | /* | |
6740 | * While all v8.0 cpus support aarch64, QEMU does have configurations | |
6741 | * that do not set ID_AA64ISAR1, e.g. user-only qemu-arm -cpu max, | |
6742 | * which will set ID_ISAR6. | |
6743 | */ | |
6744 | if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64) | |
6745 | ? cpu_isar_feature(aa64_predinv, cpu) | |
6746 | : cpu_isar_feature(aa32_predinv, cpu)) { | |
6747 | define_arm_cp_regs(cpu, predinv_reginfo); | |
6748 | } | |
2ceb98c0 PM |
6749 | } |
6750 | ||
14969266 AF |
6751 | void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu) |
6752 | { | |
22169d41 | 6753 | CPUState *cs = CPU(cpu); |
14969266 AF |
6754 | CPUARMState *env = &cpu->env; |
6755 | ||
6a669427 PM |
6756 | if (arm_feature(env, ARM_FEATURE_AARCH64)) { |
6757 | gdb_register_coprocessor(cs, aarch64_fpu_gdb_get_reg, | |
6758 | aarch64_fpu_gdb_set_reg, | |
6759 | 34, "aarch64-fpu.xml", 0); | |
6760 | } else if (arm_feature(env, ARM_FEATURE_NEON)) { | |
22169d41 | 6761 | gdb_register_coprocessor(cs, vfp_gdb_get_reg, vfp_gdb_set_reg, |
56aebc89 PB |
6762 | 51, "arm-neon.xml", 0); |
6763 | } else if (arm_feature(env, ARM_FEATURE_VFP3)) { | |
22169d41 | 6764 | gdb_register_coprocessor(cs, vfp_gdb_get_reg, vfp_gdb_set_reg, |
56aebc89 PB |
6765 | 35, "arm-vfp3.xml", 0); |
6766 | } else if (arm_feature(env, ARM_FEATURE_VFP)) { | |
22169d41 | 6767 | gdb_register_coprocessor(cs, vfp_gdb_get_reg, vfp_gdb_set_reg, |
56aebc89 PB |
6768 | 19, "arm-vfp.xml", 0); |
6769 | } | |
200bf5b7 AB |
6770 | gdb_register_coprocessor(cs, arm_gdb_get_sysreg, arm_gdb_set_sysreg, |
6771 | arm_gen_dynamic_xml(cs), | |
6772 | "system-registers.xml", 0); | |
40f137e1 PB |
6773 | } |
6774 | ||
777dc784 PM |
6775 | /* Sort alphabetically by type name, except for "any". */ |
6776 | static gint arm_cpu_list_compare(gconstpointer a, gconstpointer b) | |
5adb4839 | 6777 | { |
777dc784 PM |
6778 | ObjectClass *class_a = (ObjectClass *)a; |
6779 | ObjectClass *class_b = (ObjectClass *)b; | |
6780 | const char *name_a, *name_b; | |
5adb4839 | 6781 | |
777dc784 PM |
6782 | name_a = object_class_get_name(class_a); |
6783 | name_b = object_class_get_name(class_b); | |
51492fd1 | 6784 | if (strcmp(name_a, "any-" TYPE_ARM_CPU) == 0) { |
777dc784 | 6785 | return 1; |
51492fd1 | 6786 | } else if (strcmp(name_b, "any-" TYPE_ARM_CPU) == 0) { |
777dc784 PM |
6787 | return -1; |
6788 | } else { | |
6789 | return strcmp(name_a, name_b); | |
5adb4839 PB |
6790 | } |
6791 | } | |
6792 | ||
777dc784 | 6793 | static void arm_cpu_list_entry(gpointer data, gpointer user_data) |
40f137e1 | 6794 | { |
777dc784 | 6795 | ObjectClass *oc = data; |
51492fd1 AF |
6796 | const char *typename; |
6797 | char *name; | |
3371d272 | 6798 | |
51492fd1 AF |
6799 | typename = object_class_get_name(oc); |
6800 | name = g_strndup(typename, strlen(typename) - strlen("-" TYPE_ARM_CPU)); | |
0442428a | 6801 | qemu_printf(" %s\n", name); |
51492fd1 | 6802 | g_free(name); |
777dc784 PM |
6803 | } |
6804 | ||
0442428a | 6805 | void arm_cpu_list(void) |
777dc784 | 6806 | { |
777dc784 PM |
6807 | GSList *list; |
6808 | ||
6809 | list = object_class_get_list(TYPE_ARM_CPU, false); | |
6810 | list = g_slist_sort(list, arm_cpu_list_compare); | |
0442428a MA |
6811 | qemu_printf("Available CPUs:\n"); |
6812 | g_slist_foreach(list, arm_cpu_list_entry, NULL); | |
777dc784 | 6813 | g_slist_free(list); |
40f137e1 PB |
6814 | } |
6815 | ||
78027bb6 CR |
6816 | static void arm_cpu_add_definition(gpointer data, gpointer user_data) |
6817 | { | |
6818 | ObjectClass *oc = data; | |
6819 | CpuDefinitionInfoList **cpu_list = user_data; | |
6820 | CpuDefinitionInfoList *entry; | |
6821 | CpuDefinitionInfo *info; | |
6822 | const char *typename; | |
6823 | ||
6824 | typename = object_class_get_name(oc); | |
6825 | info = g_malloc0(sizeof(*info)); | |
6826 | info->name = g_strndup(typename, | |
6827 | strlen(typename) - strlen("-" TYPE_ARM_CPU)); | |
8ed877b7 | 6828 | info->q_typename = g_strdup(typename); |
78027bb6 CR |
6829 | |
6830 | entry = g_malloc0(sizeof(*entry)); | |
6831 | entry->value = info; | |
6832 | entry->next = *cpu_list; | |
6833 | *cpu_list = entry; | |
6834 | } | |
6835 | ||
25a9d6ca | 6836 | CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp) |
78027bb6 CR |
6837 | { |
6838 | CpuDefinitionInfoList *cpu_list = NULL; | |
6839 | GSList *list; | |
6840 | ||
6841 | list = object_class_get_list(TYPE_ARM_CPU, false); | |
6842 | g_slist_foreach(list, arm_cpu_add_definition, &cpu_list); | |
6843 | g_slist_free(list); | |
6844 | ||
6845 | return cpu_list; | |
6846 | } | |
6847 | ||
6e6efd61 | 6848 | static void add_cpreg_to_hashtable(ARMCPU *cpu, const ARMCPRegInfo *r, |
51a79b03 | 6849 | void *opaque, int state, int secstate, |
9c513e78 AB |
6850 | int crm, int opc1, int opc2, |
6851 | const char *name) | |
6e6efd61 PM |
6852 | { |
6853 | /* Private utility function for define_one_arm_cp_reg_with_opaque(): | |
6854 | * add a single reginfo struct to the hash table. | |
6855 | */ | |
6856 | uint32_t *key = g_new(uint32_t, 1); | |
6857 | ARMCPRegInfo *r2 = g_memdup(r, sizeof(ARMCPRegInfo)); | |
6858 | int is64 = (r->type & ARM_CP_64BIT) ? 1 : 0; | |
3f3c82a5 FA |
6859 | int ns = (secstate & ARM_CP_SECSTATE_NS) ? 1 : 0; |
6860 | ||
9c513e78 | 6861 | r2->name = g_strdup(name); |
3f3c82a5 FA |
6862 | /* Reset the secure state to the specific incoming state. This is |
6863 | * necessary as the register may have been defined with both states. | |
6864 | */ | |
6865 | r2->secure = secstate; | |
6866 | ||
6867 | if (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1]) { | |
6868 | /* Register is banked (using both entries in array). | |
6869 | * Overwriting fieldoffset as the array is only used to define | |
6870 | * banked registers but later only fieldoffset is used. | |
f5a0a5a5 | 6871 | */ |
3f3c82a5 FA |
6872 | r2->fieldoffset = r->bank_fieldoffsets[ns]; |
6873 | } | |
6874 | ||
6875 | if (state == ARM_CP_STATE_AA32) { | |
6876 | if (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1]) { | |
6877 | /* If the register is banked then we don't need to migrate or | |
6878 | * reset the 32-bit instance in certain cases: | |
6879 | * | |
6880 | * 1) If the register has both 32-bit and 64-bit instances then we | |
6881 | * can count on the 64-bit instance taking care of the | |
6882 | * non-secure bank. | |
6883 | * 2) If ARMv8 is enabled then we can count on a 64-bit version | |
6884 | * taking care of the secure bank. This requires that separate | |
6885 | * 32 and 64-bit definitions are provided. | |
6886 | */ | |
6887 | if ((r->state == ARM_CP_STATE_BOTH && ns) || | |
6888 | (arm_feature(&cpu->env, ARM_FEATURE_V8) && !ns)) { | |
7a0e58fa | 6889 | r2->type |= ARM_CP_ALIAS; |
3f3c82a5 FA |
6890 | } |
6891 | } else if ((secstate != r->secure) && !ns) { | |
6892 | /* The register is not banked so we only want to allow migration of | |
6893 | * the non-secure instance. | |
6894 | */ | |
7a0e58fa | 6895 | r2->type |= ARM_CP_ALIAS; |
58a1d8ce | 6896 | } |
3f3c82a5 FA |
6897 | |
6898 | if (r->state == ARM_CP_STATE_BOTH) { | |
6899 | /* We assume it is a cp15 register if the .cp field is left unset. | |
6900 | */ | |
6901 | if (r2->cp == 0) { | |
6902 | r2->cp = 15; | |
6903 | } | |
6904 | ||
f5a0a5a5 | 6905 | #ifdef HOST_WORDS_BIGENDIAN |
3f3c82a5 FA |
6906 | if (r2->fieldoffset) { |
6907 | r2->fieldoffset += sizeof(uint32_t); | |
6908 | } | |
f5a0a5a5 | 6909 | #endif |
3f3c82a5 | 6910 | } |
f5a0a5a5 PM |
6911 | } |
6912 | if (state == ARM_CP_STATE_AA64) { | |
6913 | /* To allow abbreviation of ARMCPRegInfo | |
6914 | * definitions, we treat cp == 0 as equivalent to | |
6915 | * the value for "standard guest-visible sysreg". | |
58a1d8ce PM |
6916 | * STATE_BOTH definitions are also always "standard |
6917 | * sysreg" in their AArch64 view (the .cp value may | |
6918 | * be non-zero for the benefit of the AArch32 view). | |
f5a0a5a5 | 6919 | */ |
58a1d8ce | 6920 | if (r->cp == 0 || r->state == ARM_CP_STATE_BOTH) { |
f5a0a5a5 PM |
6921 | r2->cp = CP_REG_ARM64_SYSREG_CP; |
6922 | } | |
6923 | *key = ENCODE_AA64_CP_REG(r2->cp, r2->crn, crm, | |
6924 | r2->opc0, opc1, opc2); | |
6925 | } else { | |
51a79b03 | 6926 | *key = ENCODE_CP_REG(r2->cp, is64, ns, r2->crn, crm, opc1, opc2); |
f5a0a5a5 | 6927 | } |
6e6efd61 PM |
6928 | if (opaque) { |
6929 | r2->opaque = opaque; | |
6930 | } | |
67ed771d PM |
6931 | /* reginfo passed to helpers is correct for the actual access, |
6932 | * and is never ARM_CP_STATE_BOTH: | |
6933 | */ | |
6934 | r2->state = state; | |
6e6efd61 PM |
6935 | /* Make sure reginfo passed to helpers for wildcarded regs |
6936 | * has the correct crm/opc1/opc2 for this reg, not CP_ANY: | |
6937 | */ | |
6938 | r2->crm = crm; | |
6939 | r2->opc1 = opc1; | |
6940 | r2->opc2 = opc2; | |
6941 | /* By convention, for wildcarded registers only the first | |
6942 | * entry is used for migration; the others are marked as | |
7a0e58fa | 6943 | * ALIAS so we don't try to transfer the register |
6e6efd61 | 6944 | * multiple times. Special registers (ie NOP/WFI) are |
7a0e58fa | 6945 | * never migratable and not even raw-accessible. |
6e6efd61 | 6946 | */ |
7a0e58fa PM |
6947 | if ((r->type & ARM_CP_SPECIAL)) { |
6948 | r2->type |= ARM_CP_NO_RAW; | |
6949 | } | |
6950 | if (((r->crm == CP_ANY) && crm != 0) || | |
6e6efd61 PM |
6951 | ((r->opc1 == CP_ANY) && opc1 != 0) || |
6952 | ((r->opc2 == CP_ANY) && opc2 != 0)) { | |
1f163787 | 6953 | r2->type |= ARM_CP_ALIAS | ARM_CP_NO_GDB; |
6e6efd61 PM |
6954 | } |
6955 | ||
375421cc PM |
6956 | /* Check that raw accesses are either forbidden or handled. Note that |
6957 | * we can't assert this earlier because the setup of fieldoffset for | |
6958 | * banked registers has to be done first. | |
6959 | */ | |
6960 | if (!(r2->type & ARM_CP_NO_RAW)) { | |
6961 | assert(!raw_accessors_invalid(r2)); | |
6962 | } | |
6963 | ||
6e6efd61 PM |
6964 | /* Overriding of an existing definition must be explicitly |
6965 | * requested. | |
6966 | */ | |
6967 | if (!(r->type & ARM_CP_OVERRIDE)) { | |
6968 | ARMCPRegInfo *oldreg; | |
6969 | oldreg = g_hash_table_lookup(cpu->cp_regs, key); | |
6970 | if (oldreg && !(oldreg->type & ARM_CP_OVERRIDE)) { | |
6971 | fprintf(stderr, "Register redefined: cp=%d %d bit " | |
6972 | "crn=%d crm=%d opc1=%d opc2=%d, " | |
6973 | "was %s, now %s\n", r2->cp, 32 + 32 * is64, | |
6974 | r2->crn, r2->crm, r2->opc1, r2->opc2, | |
6975 | oldreg->name, r2->name); | |
6976 | g_assert_not_reached(); | |
6977 | } | |
6978 | } | |
6979 | g_hash_table_insert(cpu->cp_regs, key, r2); | |
6980 | } | |
6981 | ||
6982 | ||
4b6a83fb PM |
6983 | void define_one_arm_cp_reg_with_opaque(ARMCPU *cpu, |
6984 | const ARMCPRegInfo *r, void *opaque) | |
6985 | { | |
6986 | /* Define implementations of coprocessor registers. | |
6987 | * We store these in a hashtable because typically | |
6988 | * there are less than 150 registers in a space which | |
6989 | * is 16*16*16*8*8 = 262144 in size. | |
6990 | * Wildcarding is supported for the crm, opc1 and opc2 fields. | |
6991 | * If a register is defined twice then the second definition is | |
6992 | * used, so this can be used to define some generic registers and | |
6993 | * then override them with implementation specific variations. | |
6994 | * At least one of the original and the second definition should | |
6995 | * include ARM_CP_OVERRIDE in its type bits -- this is just a guard | |
6996 | * against accidental use. | |
f5a0a5a5 PM |
6997 | * |
6998 | * The state field defines whether the register is to be | |
6999 | * visible in the AArch32 or AArch64 execution state. If the | |
7000 | * state is set to ARM_CP_STATE_BOTH then we synthesise a | |
7001 | * reginfo structure for the AArch32 view, which sees the lower | |
7002 | * 32 bits of the 64 bit register. | |
7003 | * | |
7004 | * Only registers visible in AArch64 may set r->opc0; opc0 cannot | |
7005 | * be wildcarded. AArch64 registers are always considered to be 64 | |
7006 | * bits; the ARM_CP_64BIT* flag applies only to the AArch32 view of | |
7007 | * the register, if any. | |
4b6a83fb | 7008 | */ |
f5a0a5a5 | 7009 | int crm, opc1, opc2, state; |
4b6a83fb PM |
7010 | int crmmin = (r->crm == CP_ANY) ? 0 : r->crm; |
7011 | int crmmax = (r->crm == CP_ANY) ? 15 : r->crm; | |
7012 | int opc1min = (r->opc1 == CP_ANY) ? 0 : r->opc1; | |
7013 | int opc1max = (r->opc1 == CP_ANY) ? 7 : r->opc1; | |
7014 | int opc2min = (r->opc2 == CP_ANY) ? 0 : r->opc2; | |
7015 | int opc2max = (r->opc2 == CP_ANY) ? 7 : r->opc2; | |
7016 | /* 64 bit registers have only CRm and Opc1 fields */ | |
7017 | assert(!((r->type & ARM_CP_64BIT) && (r->opc2 || r->crn))); | |
f5a0a5a5 PM |
7018 | /* op0 only exists in the AArch64 encodings */ |
7019 | assert((r->state != ARM_CP_STATE_AA32) || (r->opc0 == 0)); | |
7020 | /* AArch64 regs are all 64 bit so ARM_CP_64BIT is meaningless */ | |
7021 | assert((r->state != ARM_CP_STATE_AA64) || !(r->type & ARM_CP_64BIT)); | |
7022 | /* The AArch64 pseudocode CheckSystemAccess() specifies that op1 | |
7023 | * encodes a minimum access level for the register. We roll this | |
7024 | * runtime check into our general permission check code, so check | |
7025 | * here that the reginfo's specified permissions are strict enough | |
7026 | * to encompass the generic architectural permission check. | |
7027 | */ | |
7028 | if (r->state != ARM_CP_STATE_AA32) { | |
7029 | int mask = 0; | |
7030 | switch (r->opc1) { | |
b5bd7440 AB |
7031 | case 0: |
7032 | /* min_EL EL1, but some accessible to EL0 via kernel ABI */ | |
7033 | mask = PL0U_R | PL1_RW; | |
7034 | break; | |
7035 | case 1: case 2: | |
f5a0a5a5 PM |
7036 | /* min_EL EL1 */ |
7037 | mask = PL1_RW; | |
7038 | break; | |
7039 | case 3: | |
7040 | /* min_EL EL0 */ | |
7041 | mask = PL0_RW; | |
7042 | break; | |
7043 | case 4: | |
7044 | /* min_EL EL2 */ | |
7045 | mask = PL2_RW; | |
7046 | break; | |
7047 | case 5: | |
7048 | /* unallocated encoding, so not possible */ | |
7049 | assert(false); | |
7050 | break; | |
7051 | case 6: | |
7052 | /* min_EL EL3 */ | |
7053 | mask = PL3_RW; | |
7054 | break; | |
7055 | case 7: | |
7056 | /* min_EL EL1, secure mode only (we don't check the latter) */ | |
7057 | mask = PL1_RW; | |
7058 | break; | |
7059 | default: | |
7060 | /* broken reginfo with out-of-range opc1 */ | |
7061 | assert(false); | |
7062 | break; | |
7063 | } | |
7064 | /* assert our permissions are not too lax (stricter is fine) */ | |
7065 | assert((r->access & ~mask) == 0); | |
7066 | } | |
7067 | ||
4b6a83fb PM |
7068 | /* Check that the register definition has enough info to handle |
7069 | * reads and writes if they are permitted. | |
7070 | */ | |
7071 | if (!(r->type & (ARM_CP_SPECIAL|ARM_CP_CONST))) { | |
7072 | if (r->access & PL3_R) { | |
3f3c82a5 FA |
7073 | assert((r->fieldoffset || |
7074 | (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1])) || | |
7075 | r->readfn); | |
4b6a83fb PM |
7076 | } |
7077 | if (r->access & PL3_W) { | |
3f3c82a5 FA |
7078 | assert((r->fieldoffset || |
7079 | (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1])) || | |
7080 | r->writefn); | |
4b6a83fb PM |
7081 | } |
7082 | } | |
7083 | /* Bad type field probably means missing sentinel at end of reg list */ | |
7084 | assert(cptype_valid(r->type)); | |
7085 | for (crm = crmmin; crm <= crmmax; crm++) { | |
7086 | for (opc1 = opc1min; opc1 <= opc1max; opc1++) { | |
7087 | for (opc2 = opc2min; opc2 <= opc2max; opc2++) { | |
f5a0a5a5 PM |
7088 | for (state = ARM_CP_STATE_AA32; |
7089 | state <= ARM_CP_STATE_AA64; state++) { | |
7090 | if (r->state != state && r->state != ARM_CP_STATE_BOTH) { | |
7091 | continue; | |
7092 | } | |
3f3c82a5 FA |
7093 | if (state == ARM_CP_STATE_AA32) { |
7094 | /* Under AArch32 CP registers can be common | |
7095 | * (same for secure and non-secure world) or banked. | |
7096 | */ | |
9c513e78 AB |
7097 | char *name; |
7098 | ||
3f3c82a5 FA |
7099 | switch (r->secure) { |
7100 | case ARM_CP_SECSTATE_S: | |
7101 | case ARM_CP_SECSTATE_NS: | |
7102 | add_cpreg_to_hashtable(cpu, r, opaque, state, | |
9c513e78 AB |
7103 | r->secure, crm, opc1, opc2, |
7104 | r->name); | |
3f3c82a5 FA |
7105 | break; |
7106 | default: | |
9c513e78 | 7107 | name = g_strdup_printf("%s_S", r->name); |
3f3c82a5 FA |
7108 | add_cpreg_to_hashtable(cpu, r, opaque, state, |
7109 | ARM_CP_SECSTATE_S, | |
9c513e78 AB |
7110 | crm, opc1, opc2, name); |
7111 | g_free(name); | |
3f3c82a5 FA |
7112 | add_cpreg_to_hashtable(cpu, r, opaque, state, |
7113 | ARM_CP_SECSTATE_NS, | |
9c513e78 | 7114 | crm, opc1, opc2, r->name); |
3f3c82a5 FA |
7115 | break; |
7116 | } | |
7117 | } else { | |
7118 | /* AArch64 registers get mapped to non-secure instance | |
7119 | * of AArch32 */ | |
7120 | add_cpreg_to_hashtable(cpu, r, opaque, state, | |
7121 | ARM_CP_SECSTATE_NS, | |
9c513e78 | 7122 | crm, opc1, opc2, r->name); |
3f3c82a5 | 7123 | } |
f5a0a5a5 | 7124 | } |
4b6a83fb PM |
7125 | } |
7126 | } | |
7127 | } | |
7128 | } | |
7129 | ||
7130 | void define_arm_cp_regs_with_opaque(ARMCPU *cpu, | |
7131 | const ARMCPRegInfo *regs, void *opaque) | |
7132 | { | |
7133 | /* Define a whole list of registers */ | |
7134 | const ARMCPRegInfo *r; | |
7135 | for (r = regs; r->type != ARM_CP_SENTINEL; r++) { | |
7136 | define_one_arm_cp_reg_with_opaque(cpu, r, opaque); | |
7137 | } | |
7138 | } | |
7139 | ||
6c5c0fec AB |
7140 | /* |
7141 | * Modify ARMCPRegInfo for access from userspace. | |
7142 | * | |
7143 | * This is a data driven modification directed by | |
7144 | * ARMCPRegUserSpaceInfo. All registers become ARM_CP_CONST as | |
7145 | * user-space cannot alter any values and dynamic values pertaining to | |
7146 | * execution state are hidden from user space view anyway. | |
7147 | */ | |
7148 | void modify_arm_cp_regs(ARMCPRegInfo *regs, const ARMCPRegUserSpaceInfo *mods) | |
7149 | { | |
7150 | const ARMCPRegUserSpaceInfo *m; | |
7151 | ARMCPRegInfo *r; | |
7152 | ||
7153 | for (m = mods; m->name; m++) { | |
d040242e AB |
7154 | GPatternSpec *pat = NULL; |
7155 | if (m->is_glob) { | |
7156 | pat = g_pattern_spec_new(m->name); | |
7157 | } | |
6c5c0fec | 7158 | for (r = regs; r->type != ARM_CP_SENTINEL; r++) { |
d040242e AB |
7159 | if (pat && g_pattern_match_string(pat, r->name)) { |
7160 | r->type = ARM_CP_CONST; | |
7161 | r->access = PL0U_R; | |
7162 | r->resetvalue = 0; | |
7163 | /* continue */ | |
7164 | } else if (strcmp(r->name, m->name) == 0) { | |
6c5c0fec AB |
7165 | r->type = ARM_CP_CONST; |
7166 | r->access = PL0U_R; | |
7167 | r->resetvalue &= m->exported_bits; | |
7168 | r->resetvalue |= m->fixed_bits; | |
7169 | break; | |
7170 | } | |
7171 | } | |
d040242e AB |
7172 | if (pat) { |
7173 | g_pattern_spec_free(pat); | |
7174 | } | |
6c5c0fec AB |
7175 | } |
7176 | } | |
7177 | ||
60322b39 | 7178 | const ARMCPRegInfo *get_arm_cp_reginfo(GHashTable *cpregs, uint32_t encoded_cp) |
4b6a83fb | 7179 | { |
60322b39 | 7180 | return g_hash_table_lookup(cpregs, &encoded_cp); |
4b6a83fb PM |
7181 | } |
7182 | ||
c4241c7d PM |
7183 | void arm_cp_write_ignore(CPUARMState *env, const ARMCPRegInfo *ri, |
7184 | uint64_t value) | |
4b6a83fb PM |
7185 | { |
7186 | /* Helper coprocessor write function for write-ignore registers */ | |
4b6a83fb PM |
7187 | } |
7188 | ||
c4241c7d | 7189 | uint64_t arm_cp_read_zero(CPUARMState *env, const ARMCPRegInfo *ri) |
4b6a83fb PM |
7190 | { |
7191 | /* Helper coprocessor write function for read-as-zero registers */ | |
4b6a83fb PM |
7192 | return 0; |
7193 | } | |
7194 | ||
f5a0a5a5 PM |
7195 | void arm_cp_reset_ignore(CPUARMState *env, const ARMCPRegInfo *opaque) |
7196 | { | |
7197 | /* Helper coprocessor reset function for do-nothing-on-reset registers */ | |
7198 | } | |
7199 | ||
af393ffc | 7200 | static int bad_mode_switch(CPUARMState *env, int mode, CPSRWriteType write_type) |
37064a8b PM |
7201 | { |
7202 | /* Return true if it is not valid for us to switch to | |
7203 | * this CPU mode (ie all the UNPREDICTABLE cases in | |
7204 | * the ARM ARM CPSRWriteByInstr pseudocode). | |
7205 | */ | |
af393ffc PM |
7206 | |
7207 | /* Changes to or from Hyp via MSR and CPS are illegal. */ | |
7208 | if (write_type == CPSRWriteByInstr && | |
7209 | ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_HYP || | |
7210 | mode == ARM_CPU_MODE_HYP)) { | |
7211 | return 1; | |
7212 | } | |
7213 | ||
37064a8b PM |
7214 | switch (mode) { |
7215 | case ARM_CPU_MODE_USR: | |
10eacda7 | 7216 | return 0; |
37064a8b PM |
7217 | case ARM_CPU_MODE_SYS: |
7218 | case ARM_CPU_MODE_SVC: | |
7219 | case ARM_CPU_MODE_ABT: | |
7220 | case ARM_CPU_MODE_UND: | |
7221 | case ARM_CPU_MODE_IRQ: | |
7222 | case ARM_CPU_MODE_FIQ: | |
52ff951b PM |
7223 | /* Note that we don't implement the IMPDEF NSACR.RFR which in v7 |
7224 | * allows FIQ mode to be Secure-only. (In v8 this doesn't exist.) | |
7225 | */ | |
10eacda7 PM |
7226 | /* If HCR.TGE is set then changes from Monitor to NS PL1 via MSR |
7227 | * and CPS are treated as illegal mode changes. | |
7228 | */ | |
7229 | if (write_type == CPSRWriteByInstr && | |
10eacda7 | 7230 | (env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_MON && |
7c208e0f | 7231 | (arm_hcr_el2_eff(env) & HCR_TGE)) { |
10eacda7 PM |
7232 | return 1; |
7233 | } | |
37064a8b | 7234 | return 0; |
e6c8fc07 PM |
7235 | case ARM_CPU_MODE_HYP: |
7236 | return !arm_feature(env, ARM_FEATURE_EL2) | |
2d2a4549 | 7237 | || arm_current_el(env) < 2 || arm_is_secure_below_el3(env); |
027fc527 | 7238 | case ARM_CPU_MODE_MON: |
58ae2d1f | 7239 | return arm_current_el(env) < 3; |
37064a8b PM |
7240 | default: |
7241 | return 1; | |
7242 | } | |
7243 | } | |
7244 | ||
2f4a40e5 AZ |
7245 | uint32_t cpsr_read(CPUARMState *env) |
7246 | { | |
7247 | int ZF; | |
6fbe23d5 PB |
7248 | ZF = (env->ZF == 0); |
7249 | return env->uncached_cpsr | (env->NF & 0x80000000) | (ZF << 30) | | |
2f4a40e5 AZ |
7250 | (env->CF << 29) | ((env->VF & 0x80000000) >> 3) | (env->QF << 27) |
7251 | | (env->thumb << 5) | ((env->condexec_bits & 3) << 25) | |
7252 | | ((env->condexec_bits & 0xfc) << 8) | |
af519934 | 7253 | | (env->GE << 16) | (env->daif & CPSR_AIF); |
2f4a40e5 AZ |
7254 | } |
7255 | ||
50866ba5 PM |
7256 | void cpsr_write(CPUARMState *env, uint32_t val, uint32_t mask, |
7257 | CPSRWriteType write_type) | |
2f4a40e5 | 7258 | { |
6e8801f9 FA |
7259 | uint32_t changed_daif; |
7260 | ||
2f4a40e5 | 7261 | if (mask & CPSR_NZCV) { |
6fbe23d5 PB |
7262 | env->ZF = (~val) & CPSR_Z; |
7263 | env->NF = val; | |
2f4a40e5 AZ |
7264 | env->CF = (val >> 29) & 1; |
7265 | env->VF = (val << 3) & 0x80000000; | |
7266 | } | |
7267 | if (mask & CPSR_Q) | |
7268 | env->QF = ((val & CPSR_Q) != 0); | |
7269 | if (mask & CPSR_T) | |
7270 | env->thumb = ((val & CPSR_T) != 0); | |
7271 | if (mask & CPSR_IT_0_1) { | |
7272 | env->condexec_bits &= ~3; | |
7273 | env->condexec_bits |= (val >> 25) & 3; | |
7274 | } | |
7275 | if (mask & CPSR_IT_2_7) { | |
7276 | env->condexec_bits &= 3; | |
7277 | env->condexec_bits |= (val >> 8) & 0xfc; | |
7278 | } | |
7279 | if (mask & CPSR_GE) { | |
7280 | env->GE = (val >> 16) & 0xf; | |
7281 | } | |
7282 | ||
6e8801f9 FA |
7283 | /* In a V7 implementation that includes the security extensions but does |
7284 | * not include Virtualization Extensions the SCR.FW and SCR.AW bits control | |
7285 | * whether non-secure software is allowed to change the CPSR_F and CPSR_A | |
7286 | * bits respectively. | |
7287 | * | |
7288 | * In a V8 implementation, it is permitted for privileged software to | |
7289 | * change the CPSR A/F bits regardless of the SCR.AW/FW bits. | |
7290 | */ | |
f8c88bbc | 7291 | if (write_type != CPSRWriteRaw && !arm_feature(env, ARM_FEATURE_V8) && |
6e8801f9 FA |
7292 | arm_feature(env, ARM_FEATURE_EL3) && |
7293 | !arm_feature(env, ARM_FEATURE_EL2) && | |
7294 | !arm_is_secure(env)) { | |
7295 | ||
7296 | changed_daif = (env->daif ^ val) & mask; | |
7297 | ||
7298 | if (changed_daif & CPSR_A) { | |
7299 | /* Check to see if we are allowed to change the masking of async | |
7300 | * abort exceptions from a non-secure state. | |
7301 | */ | |
7302 | if (!(env->cp15.scr_el3 & SCR_AW)) { | |
7303 | qemu_log_mask(LOG_GUEST_ERROR, | |
7304 | "Ignoring attempt to switch CPSR_A flag from " | |
7305 | "non-secure world with SCR.AW bit clear\n"); | |
7306 | mask &= ~CPSR_A; | |
7307 | } | |
7308 | } | |
7309 | ||
7310 | if (changed_daif & CPSR_F) { | |
7311 | /* Check to see if we are allowed to change the masking of FIQ | |
7312 | * exceptions from a non-secure state. | |
7313 | */ | |
7314 | if (!(env->cp15.scr_el3 & SCR_FW)) { | |
7315 | qemu_log_mask(LOG_GUEST_ERROR, | |
7316 | "Ignoring attempt to switch CPSR_F flag from " | |
7317 | "non-secure world with SCR.FW bit clear\n"); | |
7318 | mask &= ~CPSR_F; | |
7319 | } | |
7320 | ||
7321 | /* Check whether non-maskable FIQ (NMFI) support is enabled. | |
7322 | * If this bit is set software is not allowed to mask | |
7323 | * FIQs, but is allowed to set CPSR_F to 0. | |
7324 | */ | |
7325 | if ((A32_BANKED_CURRENT_REG_GET(env, sctlr) & SCTLR_NMFI) && | |
7326 | (val & CPSR_F)) { | |
7327 | qemu_log_mask(LOG_GUEST_ERROR, | |
7328 | "Ignoring attempt to enable CPSR_F flag " | |
7329 | "(non-maskable FIQ [NMFI] support enabled)\n"); | |
7330 | mask &= ~CPSR_F; | |
7331 | } | |
7332 | } | |
7333 | } | |
7334 | ||
4cc35614 PM |
7335 | env->daif &= ~(CPSR_AIF & mask); |
7336 | env->daif |= val & CPSR_AIF & mask; | |
7337 | ||
f8c88bbc PM |
7338 | if (write_type != CPSRWriteRaw && |
7339 | ((env->uncached_cpsr ^ val) & mask & CPSR_M)) { | |
8c4f0eb9 PM |
7340 | if ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR) { |
7341 | /* Note that we can only get here in USR mode if this is a | |
7342 | * gdb stub write; for this case we follow the architectural | |
7343 | * behaviour for guest writes in USR mode of ignoring an attempt | |
7344 | * to switch mode. (Those are caught by translate.c for writes | |
7345 | * triggered by guest instructions.) | |
7346 | */ | |
7347 | mask &= ~CPSR_M; | |
7348 | } else if (bad_mode_switch(env, val & CPSR_M, write_type)) { | |
81907a58 PM |
7349 | /* Attempt to switch to an invalid mode: this is UNPREDICTABLE in |
7350 | * v7, and has defined behaviour in v8: | |
7351 | * + leave CPSR.M untouched | |
7352 | * + allow changes to the other CPSR fields | |
7353 | * + set PSTATE.IL | |
7354 | * For user changes via the GDB stub, we don't set PSTATE.IL, | |
7355 | * as this would be unnecessarily harsh for a user error. | |
37064a8b PM |
7356 | */ |
7357 | mask &= ~CPSR_M; | |
81907a58 PM |
7358 | if (write_type != CPSRWriteByGDBStub && |
7359 | arm_feature(env, ARM_FEATURE_V8)) { | |
7360 | mask |= CPSR_IL; | |
7361 | val |= CPSR_IL; | |
7362 | } | |
81e37284 PM |
7363 | qemu_log_mask(LOG_GUEST_ERROR, |
7364 | "Illegal AArch32 mode switch attempt from %s to %s\n", | |
7365 | aarch32_mode_name(env->uncached_cpsr), | |
7366 | aarch32_mode_name(val)); | |
37064a8b | 7367 | } else { |
81e37284 PM |
7368 | qemu_log_mask(CPU_LOG_INT, "%s %s to %s PC 0x%" PRIx32 "\n", |
7369 | write_type == CPSRWriteExceptionReturn ? | |
7370 | "Exception return from AArch32" : | |
7371 | "AArch32 mode switch from", | |
7372 | aarch32_mode_name(env->uncached_cpsr), | |
7373 | aarch32_mode_name(val), env->regs[15]); | |
37064a8b PM |
7374 | switch_mode(env, val & CPSR_M); |
7375 | } | |
2f4a40e5 AZ |
7376 | } |
7377 | mask &= ~CACHED_CPSR_BITS; | |
7378 | env->uncached_cpsr = (env->uncached_cpsr & ~mask) | (val & mask); | |
7379 | } | |
7380 | ||
b26eefb6 PB |
7381 | /* Sign/zero extend */ |
7382 | uint32_t HELPER(sxtb16)(uint32_t x) | |
7383 | { | |
7384 | uint32_t res; | |
7385 | res = (uint16_t)(int8_t)x; | |
7386 | res |= (uint32_t)(int8_t)(x >> 16) << 16; | |
7387 | return res; | |
7388 | } | |
7389 | ||
7390 | uint32_t HELPER(uxtb16)(uint32_t x) | |
7391 | { | |
7392 | uint32_t res; | |
7393 | res = (uint16_t)(uint8_t)x; | |
7394 | res |= (uint32_t)(uint8_t)(x >> 16) << 16; | |
7395 | return res; | |
7396 | } | |
7397 | ||
3670669c PB |
7398 | int32_t HELPER(sdiv)(int32_t num, int32_t den) |
7399 | { | |
7400 | if (den == 0) | |
7401 | return 0; | |
686eeb93 AJ |
7402 | if (num == INT_MIN && den == -1) |
7403 | return INT_MIN; | |
3670669c PB |
7404 | return num / den; |
7405 | } | |
7406 | ||
7407 | uint32_t HELPER(udiv)(uint32_t num, uint32_t den) | |
7408 | { | |
7409 | if (den == 0) | |
7410 | return 0; | |
7411 | return num / den; | |
7412 | } | |
7413 | ||
7414 | uint32_t HELPER(rbit)(uint32_t x) | |
7415 | { | |
42fedbca | 7416 | return revbit32(x); |
3670669c PB |
7417 | } |
7418 | ||
c47eaf9f | 7419 | #ifdef CONFIG_USER_ONLY |
b5ff1b31 | 7420 | |
9ee6e8bb | 7421 | /* These should probably raise undefined insn exceptions. */ |
0ecb72a5 | 7422 | void HELPER(v7m_msr)(CPUARMState *env, uint32_t reg, uint32_t val) |
9ee6e8bb | 7423 | { |
a47dddd7 AF |
7424 | ARMCPU *cpu = arm_env_get_cpu(env); |
7425 | ||
7426 | cpu_abort(CPU(cpu), "v7m_msr %d\n", reg); | |
9ee6e8bb PB |
7427 | } |
7428 | ||
0ecb72a5 | 7429 | uint32_t HELPER(v7m_mrs)(CPUARMState *env, uint32_t reg) |
9ee6e8bb | 7430 | { |
a47dddd7 AF |
7431 | ARMCPU *cpu = arm_env_get_cpu(env); |
7432 | ||
7433 | cpu_abort(CPU(cpu), "v7m_mrs %d\n", reg); | |
9ee6e8bb PB |
7434 | return 0; |
7435 | } | |
7436 | ||
fb602cb7 PM |
7437 | void HELPER(v7m_bxns)(CPUARMState *env, uint32_t dest) |
7438 | { | |
7439 | /* translate.c should never generate calls here in user-only mode */ | |
7440 | g_assert_not_reached(); | |
7441 | } | |
7442 | ||
3e3fa230 PM |
7443 | void HELPER(v7m_blxns)(CPUARMState *env, uint32_t dest) |
7444 | { | |
7445 | /* translate.c should never generate calls here in user-only mode */ | |
7446 | g_assert_not_reached(); | |
7447 | } | |
7448 | ||
e33cf0f8 PM |
7449 | void HELPER(v7m_preserve_fp_state)(CPUARMState *env) |
7450 | { | |
7451 | /* translate.c should never generate calls here in user-only mode */ | |
7452 | g_assert_not_reached(); | |
7453 | } | |
7454 | ||
019076b0 PM |
7455 | void HELPER(v7m_vlstm)(CPUARMState *env, uint32_t fptr) |
7456 | { | |
7457 | /* translate.c should never generate calls here in user-only mode */ | |
7458 | g_assert_not_reached(); | |
7459 | } | |
7460 | ||
956fe143 PM |
7461 | void HELPER(v7m_vlldm)(CPUARMState *env, uint32_t fptr) |
7462 | { | |
7463 | /* translate.c should never generate calls here in user-only mode */ | |
7464 | g_assert_not_reached(); | |
7465 | } | |
7466 | ||
5158de24 PM |
7467 | uint32_t HELPER(v7m_tt)(CPUARMState *env, uint32_t addr, uint32_t op) |
7468 | { | |
7469 | /* The TT instructions can be used by unprivileged code, but in | |
7470 | * user-only emulation we don't have the MPU. | |
7471 | * Luckily since we know we are NonSecure unprivileged (and that in | |
7472 | * turn means that the A flag wasn't specified), all the bits in the | |
7473 | * register must be zero: | |
7474 | * IREGION: 0 because IRVALID is 0 | |
7475 | * IRVALID: 0 because NS | |
7476 | * S: 0 because NS | |
7477 | * NSRW: 0 because NS | |
7478 | * NSR: 0 because NS | |
7479 | * RW: 0 because unpriv and A flag not set | |
7480 | * R: 0 because unpriv and A flag not set | |
7481 | * SRVALID: 0 because NS | |
7482 | * MRVALID: 0 because unpriv and A flag not set | |
7483 | * SREGION: 0 becaus SRVALID is 0 | |
7484 | * MREGION: 0 because MRVALID is 0 | |
7485 | */ | |
7486 | return 0; | |
7487 | } | |
7488 | ||
affdb64d | 7489 | static void switch_mode(CPUARMState *env, int mode) |
b5ff1b31 | 7490 | { |
a47dddd7 AF |
7491 | ARMCPU *cpu = arm_env_get_cpu(env); |
7492 | ||
7493 | if (mode != ARM_CPU_MODE_USR) { | |
7494 | cpu_abort(CPU(cpu), "Tried to switch out of user mode\n"); | |
7495 | } | |
b5ff1b31 FB |
7496 | } |
7497 | ||
012a906b GB |
7498 | uint32_t arm_phys_excp_target_el(CPUState *cs, uint32_t excp_idx, |
7499 | uint32_t cur_el, bool secure) | |
9e729b57 EI |
7500 | { |
7501 | return 1; | |
7502 | } | |
7503 | ||
ce02049d GB |
7504 | void aarch64_sync_64_to_32(CPUARMState *env) |
7505 | { | |
7506 | g_assert_not_reached(); | |
7507 | } | |
7508 | ||
b5ff1b31 FB |
7509 | #else |
7510 | ||
affdb64d | 7511 | static void switch_mode(CPUARMState *env, int mode) |
b5ff1b31 FB |
7512 | { |
7513 | int old_mode; | |
7514 | int i; | |
7515 | ||
7516 | old_mode = env->uncached_cpsr & CPSR_M; | |
7517 | if (mode == old_mode) | |
7518 | return; | |
7519 | ||
7520 | if (old_mode == ARM_CPU_MODE_FIQ) { | |
7521 | memcpy (env->fiq_regs, env->regs + 8, 5 * sizeof(uint32_t)); | |
8637c67f | 7522 | memcpy (env->regs + 8, env->usr_regs, 5 * sizeof(uint32_t)); |
b5ff1b31 FB |
7523 | } else if (mode == ARM_CPU_MODE_FIQ) { |
7524 | memcpy (env->usr_regs, env->regs + 8, 5 * sizeof(uint32_t)); | |
8637c67f | 7525 | memcpy (env->regs + 8, env->fiq_regs, 5 * sizeof(uint32_t)); |
b5ff1b31 FB |
7526 | } |
7527 | ||
f5206413 | 7528 | i = bank_number(old_mode); |
b5ff1b31 | 7529 | env->banked_r13[i] = env->regs[13]; |
b5ff1b31 FB |
7530 | env->banked_spsr[i] = env->spsr; |
7531 | ||
f5206413 | 7532 | i = bank_number(mode); |
b5ff1b31 | 7533 | env->regs[13] = env->banked_r13[i]; |
b5ff1b31 | 7534 | env->spsr = env->banked_spsr[i]; |
593cfa2b PM |
7535 | |
7536 | env->banked_r14[r14_bank_number(old_mode)] = env->regs[14]; | |
7537 | env->regs[14] = env->banked_r14[r14_bank_number(mode)]; | |
b5ff1b31 FB |
7538 | } |
7539 | ||
0eeb17d6 GB |
7540 | /* Physical Interrupt Target EL Lookup Table |
7541 | * | |
7542 | * [ From ARM ARM section G1.13.4 (Table G1-15) ] | |
7543 | * | |
7544 | * The below multi-dimensional table is used for looking up the target | |
7545 | * exception level given numerous condition criteria. Specifically, the | |
7546 | * target EL is based on SCR and HCR routing controls as well as the | |
7547 | * currently executing EL and secure state. | |
7548 | * | |
7549 | * Dimensions: | |
7550 | * target_el_table[2][2][2][2][2][4] | |
7551 | * | | | | | +--- Current EL | |
7552 | * | | | | +------ Non-secure(0)/Secure(1) | |
7553 | * | | | +--------- HCR mask override | |
7554 | * | | +------------ SCR exec state control | |
7555 | * | +--------------- SCR mask override | |
7556 | * +------------------ 32-bit(0)/64-bit(1) EL3 | |
7557 | * | |
7558 | * The table values are as such: | |
7559 | * 0-3 = EL0-EL3 | |
7560 | * -1 = Cannot occur | |
7561 | * | |
7562 | * The ARM ARM target EL table includes entries indicating that an "exception | |
7563 | * is not taken". The two cases where this is applicable are: | |
7564 | * 1) An exception is taken from EL3 but the SCR does not have the exception | |
7565 | * routed to EL3. | |
7566 | * 2) An exception is taken from EL2 but the HCR does not have the exception | |
7567 | * routed to EL2. | |
7568 | * In these two cases, the below table contain a target of EL1. This value is | |
7569 | * returned as it is expected that the consumer of the table data will check | |
7570 | * for "target EL >= current EL" to ensure the exception is not taken. | |
7571 | * | |
7572 | * SCR HCR | |
7573 | * 64 EA AMO From | |
7574 | * BIT IRQ IMO Non-secure Secure | |
7575 | * EL3 FIQ RW FMO EL0 EL1 EL2 EL3 EL0 EL1 EL2 EL3 | |
7576 | */ | |
82c39f6a | 7577 | static const int8_t target_el_table[2][2][2][2][2][4] = { |
0eeb17d6 GB |
7578 | {{{{/* 0 0 0 0 */{ 1, 1, 2, -1 },{ 3, -1, -1, 3 },}, |
7579 | {/* 0 0 0 1 */{ 2, 2, 2, -1 },{ 3, -1, -1, 3 },},}, | |
7580 | {{/* 0 0 1 0 */{ 1, 1, 2, -1 },{ 3, -1, -1, 3 },}, | |
7581 | {/* 0 0 1 1 */{ 2, 2, 2, -1 },{ 3, -1, -1, 3 },},},}, | |
7582 | {{{/* 0 1 0 0 */{ 3, 3, 3, -1 },{ 3, -1, -1, 3 },}, | |
7583 | {/* 0 1 0 1 */{ 3, 3, 3, -1 },{ 3, -1, -1, 3 },},}, | |
7584 | {{/* 0 1 1 0 */{ 3, 3, 3, -1 },{ 3, -1, -1, 3 },}, | |
7585 | {/* 0 1 1 1 */{ 3, 3, 3, -1 },{ 3, -1, -1, 3 },},},},}, | |
7586 | {{{{/* 1 0 0 0 */{ 1, 1, 2, -1 },{ 1, 1, -1, 1 },}, | |
7587 | {/* 1 0 0 1 */{ 2, 2, 2, -1 },{ 1, 1, -1, 1 },},}, | |
7588 | {{/* 1 0 1 0 */{ 1, 1, 1, -1 },{ 1, 1, -1, 1 },}, | |
7589 | {/* 1 0 1 1 */{ 2, 2, 2, -1 },{ 1, 1, -1, 1 },},},}, | |
7590 | {{{/* 1 1 0 0 */{ 3, 3, 3, -1 },{ 3, 3, -1, 3 },}, | |
7591 | {/* 1 1 0 1 */{ 3, 3, 3, -1 },{ 3, 3, -1, 3 },},}, | |
7592 | {{/* 1 1 1 0 */{ 3, 3, 3, -1 },{ 3, 3, -1, 3 },}, | |
7593 | {/* 1 1 1 1 */{ 3, 3, 3, -1 },{ 3, 3, -1, 3 },},},},}, | |
7594 | }; | |
7595 | ||
7596 | /* | |
7597 | * Determine the target EL for physical exceptions | |
7598 | */ | |
012a906b GB |
7599 | uint32_t arm_phys_excp_target_el(CPUState *cs, uint32_t excp_idx, |
7600 | uint32_t cur_el, bool secure) | |
0eeb17d6 GB |
7601 | { |
7602 | CPUARMState *env = cs->env_ptr; | |
f7778444 RH |
7603 | bool rw; |
7604 | bool scr; | |
7605 | bool hcr; | |
0eeb17d6 | 7606 | int target_el; |
2cde031f | 7607 | /* Is the highest EL AArch64? */ |
f7778444 RH |
7608 | bool is64 = arm_feature(env, ARM_FEATURE_AARCH64); |
7609 | uint64_t hcr_el2; | |
2cde031f SS |
7610 | |
7611 | if (arm_feature(env, ARM_FEATURE_EL3)) { | |
7612 | rw = ((env->cp15.scr_el3 & SCR_RW) == SCR_RW); | |
7613 | } else { | |
7614 | /* Either EL2 is the highest EL (and so the EL2 register width | |
7615 | * is given by is64); or there is no EL2 or EL3, in which case | |
7616 | * the value of 'rw' does not affect the table lookup anyway. | |
7617 | */ | |
7618 | rw = is64; | |
7619 | } | |
0eeb17d6 | 7620 | |
f7778444 | 7621 | hcr_el2 = arm_hcr_el2_eff(env); |
0eeb17d6 GB |
7622 | switch (excp_idx) { |
7623 | case EXCP_IRQ: | |
7624 | scr = ((env->cp15.scr_el3 & SCR_IRQ) == SCR_IRQ); | |
f7778444 | 7625 | hcr = hcr_el2 & HCR_IMO; |
0eeb17d6 GB |
7626 | break; |
7627 | case EXCP_FIQ: | |
7628 | scr = ((env->cp15.scr_el3 & SCR_FIQ) == SCR_FIQ); | |
f7778444 | 7629 | hcr = hcr_el2 & HCR_FMO; |
0eeb17d6 GB |
7630 | break; |
7631 | default: | |
7632 | scr = ((env->cp15.scr_el3 & SCR_EA) == SCR_EA); | |
f7778444 | 7633 | hcr = hcr_el2 & HCR_AMO; |
0eeb17d6 GB |
7634 | break; |
7635 | }; | |
7636 | ||
0eeb17d6 GB |
7637 | /* Perform a table-lookup for the target EL given the current state */ |
7638 | target_el = target_el_table[is64][scr][rw][hcr][secure][cur_el]; | |
7639 | ||
7640 | assert(target_el > 0); | |
7641 | ||
7642 | return target_el; | |
7643 | } | |
7644 | ||
d87513c0 PM |
7645 | /* |
7646 | * Return true if the v7M CPACR permits access to the FPU for the specified | |
7647 | * security state and privilege level. | |
7648 | */ | |
7649 | static bool v7m_cpacr_pass(CPUARMState *env, bool is_secure, bool is_priv) | |
7650 | { | |
7651 | switch (extract32(env->v7m.cpacr[is_secure], 20, 2)) { | |
7652 | case 0: | |
7653 | case 2: /* UNPREDICTABLE: we treat like 0 */ | |
7654 | return false; | |
7655 | case 1: | |
7656 | return is_priv; | |
7657 | case 3: | |
7658 | return true; | |
7659 | default: | |
7660 | g_assert_not_reached(); | |
7661 | } | |
7662 | } | |
7663 | ||
a356dacf PM |
7664 | /* |
7665 | * What kind of stack write are we doing? This affects how exceptions | |
7666 | * generated during the stacking are treated. | |
7667 | */ | |
7668 | typedef enum StackingMode { | |
7669 | STACK_NORMAL, | |
7670 | STACK_IGNFAULTS, | |
7671 | STACK_LAZYFP, | |
7672 | } StackingMode; | |
7673 | ||
fd592d89 | 7674 | static bool v7m_stack_write(ARMCPU *cpu, uint32_t addr, uint32_t value, |
a356dacf | 7675 | ARMMMUIdx mmu_idx, StackingMode mode) |
9ee6e8bb | 7676 | { |
fd592d89 PM |
7677 | CPUState *cs = CPU(cpu); |
7678 | CPUARMState *env = &cpu->env; | |
7679 | MemTxAttrs attrs = {}; | |
7680 | MemTxResult txres; | |
7681 | target_ulong page_size; | |
7682 | hwaddr physaddr; | |
7683 | int prot; | |
ab44c7b7 | 7684 | ARMMMUFaultInfo fi = {}; |
fd592d89 PM |
7685 | bool secure = mmu_idx & ARM_MMU_IDX_M_S; |
7686 | int exc; | |
7687 | bool exc_secure; | |
7688 | ||
7689 | if (get_phys_addr(env, addr, MMU_DATA_STORE, mmu_idx, &physaddr, | |
7690 | &attrs, &prot, &page_size, &fi, NULL)) { | |
7691 | /* MPU/SAU lookup failed */ | |
7692 | if (fi.type == ARMFault_QEMU_SFault) { | |
a356dacf PM |
7693 | if (mode == STACK_LAZYFP) { |
7694 | qemu_log_mask(CPU_LOG_INT, | |
7695 | "...SecureFault with SFSR.LSPERR " | |
7696 | "during lazy stacking\n"); | |
7697 | env->v7m.sfsr |= R_V7M_SFSR_LSPERR_MASK; | |
7698 | } else { | |
7699 | qemu_log_mask(CPU_LOG_INT, | |
7700 | "...SecureFault with SFSR.AUVIOL " | |
7701 | "during stacking\n"); | |
7702 | env->v7m.sfsr |= R_V7M_SFSR_AUVIOL_MASK; | |
7703 | } | |
7704 | env->v7m.sfsr |= R_V7M_SFSR_SFARVALID_MASK; | |
fd592d89 PM |
7705 | env->v7m.sfar = addr; |
7706 | exc = ARMV7M_EXCP_SECURE; | |
7707 | exc_secure = false; | |
7708 | } else { | |
a356dacf PM |
7709 | if (mode == STACK_LAZYFP) { |
7710 | qemu_log_mask(CPU_LOG_INT, | |
7711 | "...MemManageFault with CFSR.MLSPERR\n"); | |
7712 | env->v7m.cfsr[secure] |= R_V7M_CFSR_MLSPERR_MASK; | |
7713 | } else { | |
7714 | qemu_log_mask(CPU_LOG_INT, | |
7715 | "...MemManageFault with CFSR.MSTKERR\n"); | |
7716 | env->v7m.cfsr[secure] |= R_V7M_CFSR_MSTKERR_MASK; | |
7717 | } | |
fd592d89 PM |
7718 | exc = ARMV7M_EXCP_MEM; |
7719 | exc_secure = secure; | |
7720 | } | |
7721 | goto pend_fault; | |
7722 | } | |
7723 | address_space_stl_le(arm_addressspace(cs, attrs), physaddr, value, | |
7724 | attrs, &txres); | |
7725 | if (txres != MEMTX_OK) { | |
7726 | /* BusFault trying to write the data */ | |
a356dacf PM |
7727 | if (mode == STACK_LAZYFP) { |
7728 | qemu_log_mask(CPU_LOG_INT, "...BusFault with BFSR.LSPERR\n"); | |
7729 | env->v7m.cfsr[M_REG_NS] |= R_V7M_CFSR_LSPERR_MASK; | |
7730 | } else { | |
7731 | qemu_log_mask(CPU_LOG_INT, "...BusFault with BFSR.STKERR\n"); | |
7732 | env->v7m.cfsr[M_REG_NS] |= R_V7M_CFSR_STKERR_MASK; | |
7733 | } | |
fd592d89 PM |
7734 | exc = ARMV7M_EXCP_BUS; |
7735 | exc_secure = false; | |
7736 | goto pend_fault; | |
7737 | } | |
7738 | return true; | |
70d74660 | 7739 | |
fd592d89 PM |
7740 | pend_fault: |
7741 | /* By pending the exception at this point we are making | |
7742 | * the IMPDEF choice "overridden exceptions pended" (see the | |
7743 | * MergeExcInfo() pseudocode). The other choice would be to not | |
7744 | * pend them now and then make a choice about which to throw away | |
7745 | * later if we have two derived exceptions. | |
7746 | * The only case when we must not pend the exception but instead | |
7747 | * throw it away is if we are doing the push of the callee registers | |
a356dacf PM |
7748 | * and we've already generated a derived exception (this is indicated |
7749 | * by the caller passing STACK_IGNFAULTS). Even in this case we will | |
7750 | * still update the fault status registers. | |
fd592d89 | 7751 | */ |
a356dacf PM |
7752 | switch (mode) { |
7753 | case STACK_NORMAL: | |
fd592d89 | 7754 | armv7m_nvic_set_pending_derived(env->nvic, exc, exc_secure); |
a356dacf PM |
7755 | break; |
7756 | case STACK_LAZYFP: | |
7757 | armv7m_nvic_set_pending_lazyfp(env->nvic, exc, exc_secure); | |
7758 | break; | |
7759 | case STACK_IGNFAULTS: | |
7760 | break; | |
fd592d89 PM |
7761 | } |
7762 | return false; | |
9ee6e8bb PB |
7763 | } |
7764 | ||
95695eff PM |
7765 | static bool v7m_stack_read(ARMCPU *cpu, uint32_t *dest, uint32_t addr, |
7766 | ARMMMUIdx mmu_idx) | |
7767 | { | |
7768 | CPUState *cs = CPU(cpu); | |
7769 | CPUARMState *env = &cpu->env; | |
7770 | MemTxAttrs attrs = {}; | |
7771 | MemTxResult txres; | |
7772 | target_ulong page_size; | |
7773 | hwaddr physaddr; | |
7774 | int prot; | |
ab44c7b7 | 7775 | ARMMMUFaultInfo fi = {}; |
95695eff PM |
7776 | bool secure = mmu_idx & ARM_MMU_IDX_M_S; |
7777 | int exc; | |
7778 | bool exc_secure; | |
7779 | uint32_t value; | |
7780 | ||
7781 | if (get_phys_addr(env, addr, MMU_DATA_LOAD, mmu_idx, &physaddr, | |
7782 | &attrs, &prot, &page_size, &fi, NULL)) { | |
7783 | /* MPU/SAU lookup failed */ | |
7784 | if (fi.type == ARMFault_QEMU_SFault) { | |
7785 | qemu_log_mask(CPU_LOG_INT, | |
7786 | "...SecureFault with SFSR.AUVIOL during unstack\n"); | |
7787 | env->v7m.sfsr |= R_V7M_SFSR_AUVIOL_MASK | R_V7M_SFSR_SFARVALID_MASK; | |
7788 | env->v7m.sfar = addr; | |
7789 | exc = ARMV7M_EXCP_SECURE; | |
7790 | exc_secure = false; | |
7791 | } else { | |
7792 | qemu_log_mask(CPU_LOG_INT, | |
7793 | "...MemManageFault with CFSR.MUNSTKERR\n"); | |
7794 | env->v7m.cfsr[secure] |= R_V7M_CFSR_MUNSTKERR_MASK; | |
7795 | exc = ARMV7M_EXCP_MEM; | |
7796 | exc_secure = secure; | |
7797 | } | |
7798 | goto pend_fault; | |
7799 | } | |
7800 | ||
7801 | value = address_space_ldl(arm_addressspace(cs, attrs), physaddr, | |
7802 | attrs, &txres); | |
7803 | if (txres != MEMTX_OK) { | |
7804 | /* BusFault trying to read the data */ | |
7805 | qemu_log_mask(CPU_LOG_INT, "...BusFault with BFSR.UNSTKERR\n"); | |
7806 | env->v7m.cfsr[M_REG_NS] |= R_V7M_CFSR_UNSTKERR_MASK; | |
7807 | exc = ARMV7M_EXCP_BUS; | |
7808 | exc_secure = false; | |
7809 | goto pend_fault; | |
7810 | } | |
7811 | ||
7812 | *dest = value; | |
7813 | return true; | |
7814 | ||
7815 | pend_fault: | |
7816 | /* By pending the exception at this point we are making | |
7817 | * the IMPDEF choice "overridden exceptions pended" (see the | |
7818 | * MergeExcInfo() pseudocode). The other choice would be to not | |
7819 | * pend them now and then make a choice about which to throw away | |
7820 | * later if we have two derived exceptions. | |
7821 | */ | |
7822 | armv7m_nvic_set_pending(env->nvic, exc, exc_secure); | |
7823 | return false; | |
7824 | } | |
7825 | ||
e33cf0f8 PM |
7826 | void HELPER(v7m_preserve_fp_state)(CPUARMState *env) |
7827 | { | |
7828 | /* | |
7829 | * Preserve FP state (because LSPACT was set and we are about | |
7830 | * to execute an FP instruction). This corresponds to the | |
7831 | * PreserveFPState() pseudocode. | |
7832 | * We may throw an exception if the stacking fails. | |
7833 | */ | |
7834 | ARMCPU *cpu = arm_env_get_cpu(env); | |
7835 | bool is_secure = env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_S_MASK; | |
7836 | bool negpri = !(env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_HFRDY_MASK); | |
7837 | bool is_priv = !(env->v7m.fpccr[is_secure] & R_V7M_FPCCR_USER_MASK); | |
7838 | bool splimviol = env->v7m.fpccr[is_secure] & R_V7M_FPCCR_SPLIMVIOL_MASK; | |
7839 | uint32_t fpcar = env->v7m.fpcar[is_secure]; | |
7840 | bool stacked_ok = true; | |
7841 | bool ts = is_secure && (env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_TS_MASK); | |
7842 | bool take_exception; | |
7843 | ||
7844 | /* Take the iothread lock as we are going to touch the NVIC */ | |
7845 | qemu_mutex_lock_iothread(); | |
7846 | ||
7847 | /* Check the background context had access to the FPU */ | |
7848 | if (!v7m_cpacr_pass(env, is_secure, is_priv)) { | |
7849 | armv7m_nvic_set_pending_lazyfp(env->nvic, ARMV7M_EXCP_USAGE, is_secure); | |
7850 | env->v7m.cfsr[is_secure] |= R_V7M_CFSR_NOCP_MASK; | |
7851 | stacked_ok = false; | |
7852 | } else if (!is_secure && !extract32(env->v7m.nsacr, 10, 1)) { | |
7853 | armv7m_nvic_set_pending_lazyfp(env->nvic, ARMV7M_EXCP_USAGE, M_REG_S); | |
7854 | env->v7m.cfsr[M_REG_S] |= R_V7M_CFSR_NOCP_MASK; | |
7855 | stacked_ok = false; | |
7856 | } | |
7857 | ||
7858 | if (!splimviol && stacked_ok) { | |
7859 | /* We only stack if the stack limit wasn't violated */ | |
7860 | int i; | |
7861 | ARMMMUIdx mmu_idx; | |
7862 | ||
7863 | mmu_idx = arm_v7m_mmu_idx_all(env, is_secure, is_priv, negpri); | |
7864 | for (i = 0; i < (ts ? 32 : 16); i += 2) { | |
7865 | uint64_t dn = *aa32_vfp_dreg(env, i / 2); | |
7866 | uint32_t faddr = fpcar + 4 * i; | |
7867 | uint32_t slo = extract64(dn, 0, 32); | |
7868 | uint32_t shi = extract64(dn, 32, 32); | |
7869 | ||
7870 | if (i >= 16) { | |
7871 | faddr += 8; /* skip the slot for the FPSCR */ | |
7872 | } | |
7873 | stacked_ok = stacked_ok && | |
7874 | v7m_stack_write(cpu, faddr, slo, mmu_idx, STACK_LAZYFP) && | |
7875 | v7m_stack_write(cpu, faddr + 4, shi, mmu_idx, STACK_LAZYFP); | |
7876 | } | |
7877 | ||
7878 | stacked_ok = stacked_ok && | |
7879 | v7m_stack_write(cpu, fpcar + 0x40, | |
7880 | vfp_get_fpscr(env), mmu_idx, STACK_LAZYFP); | |
7881 | } | |
7882 | ||
7883 | /* | |
7884 | * We definitely pended an exception, but it's possible that it | |
7885 | * might not be able to be taken now. If its priority permits us | |
7886 | * to take it now, then we must not update the LSPACT or FP regs, | |
7887 | * but instead jump out to take the exception immediately. | |
7888 | * If it's just pending and won't be taken until the current | |
7889 | * handler exits, then we do update LSPACT and the FP regs. | |
7890 | */ | |
7891 | take_exception = !stacked_ok && | |
7892 | armv7m_nvic_can_take_pending_exception(env->nvic); | |
7893 | ||
7894 | qemu_mutex_unlock_iothread(); | |
7895 | ||
7896 | if (take_exception) { | |
7897 | raise_exception_ra(env, EXCP_LAZYFP, 0, 1, GETPC()); | |
7898 | } | |
7899 | ||
7900 | env->v7m.fpccr[is_secure] &= ~R_V7M_FPCCR_LSPACT_MASK; | |
7901 | ||
7902 | if (ts) { | |
7903 | /* Clear s0 to s31 and the FPSCR */ | |
7904 | int i; | |
7905 | ||
7906 | for (i = 0; i < 32; i += 2) { | |
7907 | *aa32_vfp_dreg(env, i / 2) = 0; | |
7908 | } | |
7909 | vfp_set_fpscr(env, 0); | |
7910 | } | |
7911 | /* | |
7912 | * Otherwise s0 to s15 and FPSCR are UNKNOWN; we choose to leave them | |
7913 | * unchanged. | |
7914 | */ | |
7915 | } | |
7916 | ||
3f0cddee PM |
7917 | /* Write to v7M CONTROL.SPSEL bit for the specified security bank. |
7918 | * This may change the current stack pointer between Main and Process | |
7919 | * stack pointers if it is done for the CONTROL register for the current | |
7920 | * security state. | |
de2db7ec | 7921 | */ |
3f0cddee PM |
7922 | static void write_v7m_control_spsel_for_secstate(CPUARMState *env, |
7923 | bool new_spsel, | |
7924 | bool secstate) | |
9ee6e8bb | 7925 | { |
3f0cddee | 7926 | bool old_is_psp = v7m_using_psp(env); |
de2db7ec | 7927 | |
3f0cddee PM |
7928 | env->v7m.control[secstate] = |
7929 | deposit32(env->v7m.control[secstate], | |
de2db7ec PM |
7930 | R_V7M_CONTROL_SPSEL_SHIFT, |
7931 | R_V7M_CONTROL_SPSEL_LENGTH, new_spsel); | |
7932 | ||
3f0cddee PM |
7933 | if (secstate == env->v7m.secure) { |
7934 | bool new_is_psp = v7m_using_psp(env); | |
7935 | uint32_t tmp; | |
abc24d86 | 7936 | |
3f0cddee PM |
7937 | if (old_is_psp != new_is_psp) { |
7938 | tmp = env->v7m.other_sp; | |
7939 | env->v7m.other_sp = env->regs[13]; | |
7940 | env->regs[13] = tmp; | |
7941 | } | |
de2db7ec PM |
7942 | } |
7943 | } | |
7944 | ||
3f0cddee PM |
7945 | /* Write to v7M CONTROL.SPSEL bit. This may change the current |
7946 | * stack pointer between Main and Process stack pointers. | |
7947 | */ | |
7948 | static void write_v7m_control_spsel(CPUARMState *env, bool new_spsel) | |
7949 | { | |
7950 | write_v7m_control_spsel_for_secstate(env, new_spsel, env->v7m.secure); | |
7951 | } | |
7952 | ||
de2db7ec PM |
7953 | void write_v7m_exception(CPUARMState *env, uint32_t new_exc) |
7954 | { | |
7955 | /* Write a new value to v7m.exception, thus transitioning into or out | |
7956 | * of Handler mode; this may result in a change of active stack pointer. | |
7957 | */ | |
7958 | bool new_is_psp, old_is_psp = v7m_using_psp(env); | |
7959 | uint32_t tmp; | |
abc24d86 | 7960 | |
de2db7ec PM |
7961 | env->v7m.exception = new_exc; |
7962 | ||
7963 | new_is_psp = v7m_using_psp(env); | |
7964 | ||
7965 | if (old_is_psp != new_is_psp) { | |
7966 | tmp = env->v7m.other_sp; | |
7967 | env->v7m.other_sp = env->regs[13]; | |
7968 | env->regs[13] = tmp; | |
9ee6e8bb PB |
7969 | } |
7970 | } | |
7971 | ||
fb602cb7 PM |
7972 | /* Switch M profile security state between NS and S */ |
7973 | static void switch_v7m_security_state(CPUARMState *env, bool new_secstate) | |
7974 | { | |
7975 | uint32_t new_ss_msp, new_ss_psp; | |
7976 | ||
7977 | if (env->v7m.secure == new_secstate) { | |
7978 | return; | |
7979 | } | |
7980 | ||
7981 | /* All the banked state is accessed by looking at env->v7m.secure | |
7982 | * except for the stack pointer; rearrange the SP appropriately. | |
7983 | */ | |
7984 | new_ss_msp = env->v7m.other_ss_msp; | |
7985 | new_ss_psp = env->v7m.other_ss_psp; | |
7986 | ||
7987 | if (v7m_using_psp(env)) { | |
7988 | env->v7m.other_ss_psp = env->regs[13]; | |
7989 | env->v7m.other_ss_msp = env->v7m.other_sp; | |
7990 | } else { | |
7991 | env->v7m.other_ss_msp = env->regs[13]; | |
7992 | env->v7m.other_ss_psp = env->v7m.other_sp; | |
7993 | } | |
7994 | ||
7995 | env->v7m.secure = new_secstate; | |
7996 | ||
7997 | if (v7m_using_psp(env)) { | |
7998 | env->regs[13] = new_ss_psp; | |
7999 | env->v7m.other_sp = new_ss_msp; | |
8000 | } else { | |
8001 | env->regs[13] = new_ss_msp; | |
8002 | env->v7m.other_sp = new_ss_psp; | |
8003 | } | |
8004 | } | |
8005 | ||
8006 | void HELPER(v7m_bxns)(CPUARMState *env, uint32_t dest) | |
8007 | { | |
8008 | /* Handle v7M BXNS: | |
8009 | * - if the return value is a magic value, do exception return (like BX) | |
8010 | * - otherwise bit 0 of the return value is the target security state | |
8011 | */ | |
d02a8698 PM |
8012 | uint32_t min_magic; |
8013 | ||
8014 | if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { | |
8015 | /* Covers FNC_RETURN and EXC_RETURN magic */ | |
8016 | min_magic = FNC_RETURN_MIN_MAGIC; | |
8017 | } else { | |
8018 | /* EXC_RETURN magic only */ | |
8019 | min_magic = EXC_RETURN_MIN_MAGIC; | |
8020 | } | |
8021 | ||
8022 | if (dest >= min_magic) { | |
fb602cb7 PM |
8023 | /* This is an exception return magic value; put it where |
8024 | * do_v7m_exception_exit() expects and raise EXCEPTION_EXIT. | |
8025 | * Note that if we ever add gen_ss_advance() singlestep support to | |
8026 | * M profile this should count as an "instruction execution complete" | |
8027 | * event (compare gen_bx_excret_final_code()). | |
8028 | */ | |
8029 | env->regs[15] = dest & ~1; | |
8030 | env->thumb = dest & 1; | |
8031 | HELPER(exception_internal)(env, EXCP_EXCEPTION_EXIT); | |
8032 | /* notreached */ | |
8033 | } | |
8034 | ||
8035 | /* translate.c should have made BXNS UNDEF unless we're secure */ | |
8036 | assert(env->v7m.secure); | |
8037 | ||
3cd6726f PM |
8038 | if (!(dest & 1)) { |
8039 | env->v7m.control[M_REG_S] &= ~R_V7M_CONTROL_SFPA_MASK; | |
8040 | } | |
fb602cb7 PM |
8041 | switch_v7m_security_state(env, dest & 1); |
8042 | env->thumb = 1; | |
8043 | env->regs[15] = dest & ~1; | |
8044 | } | |
8045 | ||
3e3fa230 PM |
8046 | void HELPER(v7m_blxns)(CPUARMState *env, uint32_t dest) |
8047 | { | |
8048 | /* Handle v7M BLXNS: | |
8049 | * - bit 0 of the destination address is the target security state | |
8050 | */ | |
8051 | ||
8052 | /* At this point regs[15] is the address just after the BLXNS */ | |
8053 | uint32_t nextinst = env->regs[15] | 1; | |
8054 | uint32_t sp = env->regs[13] - 8; | |
8055 | uint32_t saved_psr; | |
8056 | ||
8057 | /* translate.c will have made BLXNS UNDEF unless we're secure */ | |
8058 | assert(env->v7m.secure); | |
8059 | ||
8060 | if (dest & 1) { | |
8061 | /* target is Secure, so this is just a normal BLX, | |
8062 | * except that the low bit doesn't indicate Thumb/not. | |
8063 | */ | |
8064 | env->regs[14] = nextinst; | |
8065 | env->thumb = 1; | |
8066 | env->regs[15] = dest & ~1; | |
8067 | return; | |
8068 | } | |
8069 | ||
8070 | /* Target is non-secure: first push a stack frame */ | |
8071 | if (!QEMU_IS_ALIGNED(sp, 8)) { | |
8072 | qemu_log_mask(LOG_GUEST_ERROR, | |
8073 | "BLXNS with misaligned SP is UNPREDICTABLE\n"); | |
8074 | } | |
8075 | ||
597610eb PM |
8076 | if (sp < v7m_sp_limit(env)) { |
8077 | raise_exception(env, EXCP_STKOF, 0, 1); | |
8078 | } | |
8079 | ||
3e3fa230 PM |
8080 | saved_psr = env->v7m.exception; |
8081 | if (env->v7m.control[M_REG_S] & R_V7M_CONTROL_SFPA_MASK) { | |
8082 | saved_psr |= XPSR_SFPA; | |
8083 | } | |
8084 | ||
8085 | /* Note that these stores can throw exceptions on MPU faults */ | |
8086 | cpu_stl_data(env, sp, nextinst); | |
8087 | cpu_stl_data(env, sp + 4, saved_psr); | |
8088 | ||
8089 | env->regs[13] = sp; | |
8090 | env->regs[14] = 0xfeffffff; | |
8091 | if (arm_v7m_is_handler_mode(env)) { | |
8092 | /* Write a dummy value to IPSR, to avoid leaking the current secure | |
8093 | * exception number to non-secure code. This is guaranteed not | |
8094 | * to cause write_v7m_exception() to actually change stacks. | |
8095 | */ | |
8096 | write_v7m_exception(env, 1); | |
8097 | } | |
3cd6726f | 8098 | env->v7m.control[M_REG_S] &= ~R_V7M_CONTROL_SFPA_MASK; |
3e3fa230 PM |
8099 | switch_v7m_security_state(env, 0); |
8100 | env->thumb = 1; | |
8101 | env->regs[15] = dest; | |
8102 | } | |
8103 | ||
5b522399 PM |
8104 | static uint32_t *get_v7m_sp_ptr(CPUARMState *env, bool secure, bool threadmode, |
8105 | bool spsel) | |
8106 | { | |
8107 | /* Return a pointer to the location where we currently store the | |
8108 | * stack pointer for the requested security state and thread mode. | |
8109 | * This pointer will become invalid if the CPU state is updated | |
8110 | * such that the stack pointers are switched around (eg changing | |
8111 | * the SPSEL control bit). | |
8112 | * Compare the v8M ARM ARM pseudocode LookUpSP_with_security_mode(). | |
8113 | * Unlike that pseudocode, we require the caller to pass us in the | |
8114 | * SPSEL control bit value; this is because we also use this | |
8115 | * function in handling of pushing of the callee-saves registers | |
8116 | * part of the v8M stack frame (pseudocode PushCalleeStack()), | |
8117 | * and in the tailchain codepath the SPSEL bit comes from the exception | |
8118 | * return magic LR value from the previous exception. The pseudocode | |
8119 | * opencodes the stack-selection in PushCalleeStack(), but we prefer | |
8120 | * to make this utility function generic enough to do the job. | |
8121 | */ | |
8122 | bool want_psp = threadmode && spsel; | |
8123 | ||
8124 | if (secure == env->v7m.secure) { | |
de2db7ec PM |
8125 | if (want_psp == v7m_using_psp(env)) { |
8126 | return &env->regs[13]; | |
8127 | } else { | |
8128 | return &env->v7m.other_sp; | |
8129 | } | |
5b522399 PM |
8130 | } else { |
8131 | if (want_psp) { | |
8132 | return &env->v7m.other_ss_psp; | |
8133 | } else { | |
8134 | return &env->v7m.other_ss_msp; | |
8135 | } | |
8136 | } | |
8137 | } | |
8138 | ||
600c33f2 PM |
8139 | static bool arm_v7m_load_vector(ARMCPU *cpu, int exc, bool targets_secure, |
8140 | uint32_t *pvec) | |
39ae2474 PM |
8141 | { |
8142 | CPUState *cs = CPU(cpu); | |
8143 | CPUARMState *env = &cpu->env; | |
8144 | MemTxResult result; | |
600c33f2 PM |
8145 | uint32_t addr = env->v7m.vecbase[targets_secure] + exc * 4; |
8146 | uint32_t vector_entry; | |
8147 | MemTxAttrs attrs = {}; | |
8148 | ARMMMUIdx mmu_idx; | |
8149 | bool exc_secure; | |
8150 | ||
8151 | mmu_idx = arm_v7m_mmu_idx_for_secstate_and_priv(env, targets_secure, true); | |
39ae2474 | 8152 | |
600c33f2 PM |
8153 | /* We don't do a get_phys_addr() here because the rules for vector |
8154 | * loads are special: they always use the default memory map, and | |
8155 | * the default memory map permits reads from all addresses. | |
8156 | * Since there's no easy way to pass through to pmsav8_mpu_lookup() | |
8157 | * that we want this special case which would always say "yes", | |
8158 | * we just do the SAU lookup here followed by a direct physical load. | |
8159 | */ | |
8160 | attrs.secure = targets_secure; | |
8161 | attrs.user = false; | |
8162 | ||
8163 | if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { | |
8164 | V8M_SAttributes sattrs = {}; | |
8165 | ||
8166 | v8m_security_lookup(env, addr, MMU_DATA_LOAD, mmu_idx, &sattrs); | |
8167 | if (sattrs.ns) { | |
8168 | attrs.secure = false; | |
8169 | } else if (!targets_secure) { | |
8170 | /* NS access to S memory */ | |
8171 | goto load_fail; | |
8172 | } | |
8173 | } | |
8174 | ||
8175 | vector_entry = address_space_ldl(arm_addressspace(cs, attrs), addr, | |
8176 | attrs, &result); | |
39ae2474 | 8177 | if (result != MEMTX_OK) { |
600c33f2 | 8178 | goto load_fail; |
39ae2474 | 8179 | } |
600c33f2 PM |
8180 | *pvec = vector_entry; |
8181 | return true; | |
8182 | ||
8183 | load_fail: | |
8184 | /* All vector table fetch fails are reported as HardFault, with | |
8185 | * HFSR.VECTTBL and .FORCED set. (FORCED is set because | |
8186 | * technically the underlying exception is a MemManage or BusFault | |
8187 | * that is escalated to HardFault.) This is a terminal exception, | |
8188 | * so we will either take the HardFault immediately or else enter | |
8189 | * lockup (the latter case is handled in armv7m_nvic_set_pending_derived()). | |
8190 | */ | |
8191 | exc_secure = targets_secure || | |
8192 | !(cpu->env.v7m.aircr & R_V7M_AIRCR_BFHFNMINS_MASK); | |
8193 | env->v7m.hfsr |= R_V7M_HFSR_VECTTBL_MASK | R_V7M_HFSR_FORCED_MASK; | |
8194 | armv7m_nvic_set_pending_derived(env->nvic, ARMV7M_EXCP_HARD, exc_secure); | |
8195 | return false; | |
39ae2474 PM |
8196 | } |
8197 | ||
0dc51d66 PM |
8198 | static uint32_t v7m_integrity_sig(CPUARMState *env, uint32_t lr) |
8199 | { | |
8200 | /* | |
8201 | * Return the integrity signature value for the callee-saves | |
8202 | * stack frame section. @lr is the exception return payload/LR value | |
8203 | * whose FType bit forms bit 0 of the signature if FP is present. | |
8204 | */ | |
8205 | uint32_t sig = 0xfefa125a; | |
8206 | ||
8207 | if (!arm_feature(env, ARM_FEATURE_VFP) || (lr & R_V7M_EXCRET_FTYPE_MASK)) { | |
8208 | sig |= 1; | |
8209 | } | |
8210 | return sig; | |
8211 | } | |
8212 | ||
65b4234f | 8213 | static bool v7m_push_callee_stack(ARMCPU *cpu, uint32_t lr, bool dotailchain, |
0094ca70 | 8214 | bool ignore_faults) |
d3392718 PM |
8215 | { |
8216 | /* For v8M, push the callee-saves register part of the stack frame. | |
8217 | * Compare the v8M pseudocode PushCalleeStack(). | |
8218 | * In the tailchaining case this may not be the current stack. | |
8219 | */ | |
8220 | CPUARMState *env = &cpu->env; | |
d3392718 PM |
8221 | uint32_t *frame_sp_p; |
8222 | uint32_t frameptr; | |
65b4234f PM |
8223 | ARMMMUIdx mmu_idx; |
8224 | bool stacked_ok; | |
c32da7aa PM |
8225 | uint32_t limit; |
8226 | bool want_psp; | |
0dc51d66 | 8227 | uint32_t sig; |
a356dacf | 8228 | StackingMode smode = ignore_faults ? STACK_IGNFAULTS : STACK_NORMAL; |
d3392718 PM |
8229 | |
8230 | if (dotailchain) { | |
65b4234f PM |
8231 | bool mode = lr & R_V7M_EXCRET_MODE_MASK; |
8232 | bool priv = !(env->v7m.control[M_REG_S] & R_V7M_CONTROL_NPRIV_MASK) || | |
8233 | !mode; | |
8234 | ||
8235 | mmu_idx = arm_v7m_mmu_idx_for_secstate_and_priv(env, M_REG_S, priv); | |
8236 | frame_sp_p = get_v7m_sp_ptr(env, M_REG_S, mode, | |
d3392718 | 8237 | lr & R_V7M_EXCRET_SPSEL_MASK); |
c32da7aa PM |
8238 | want_psp = mode && (lr & R_V7M_EXCRET_SPSEL_MASK); |
8239 | if (want_psp) { | |
8240 | limit = env->v7m.psplim[M_REG_S]; | |
8241 | } else { | |
8242 | limit = env->v7m.msplim[M_REG_S]; | |
8243 | } | |
d3392718 | 8244 | } else { |
50494a27 | 8245 | mmu_idx = arm_mmu_idx(env); |
d3392718 | 8246 | frame_sp_p = &env->regs[13]; |
c32da7aa | 8247 | limit = v7m_sp_limit(env); |
d3392718 PM |
8248 | } |
8249 | ||
8250 | frameptr = *frame_sp_p - 0x28; | |
c32da7aa PM |
8251 | if (frameptr < limit) { |
8252 | /* | |
8253 | * Stack limit failure: set SP to the limit value, and generate | |
8254 | * STKOF UsageFault. Stack pushes below the limit must not be | |
8255 | * performed. It is IMPDEF whether pushes above the limit are | |
8256 | * performed; we choose not to. | |
8257 | */ | |
8258 | qemu_log_mask(CPU_LOG_INT, | |
8259 | "...STKOF during callee-saves register stacking\n"); | |
8260 | env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_STKOF_MASK; | |
8261 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, | |
8262 | env->v7m.secure); | |
8263 | *frame_sp_p = limit; | |
8264 | return true; | |
8265 | } | |
d3392718 | 8266 | |
65b4234f PM |
8267 | /* Write as much of the stack frame as we can. A write failure may |
8268 | * cause us to pend a derived exception. | |
8269 | */ | |
0dc51d66 | 8270 | sig = v7m_integrity_sig(env, lr); |
65b4234f | 8271 | stacked_ok = |
a356dacf PM |
8272 | v7m_stack_write(cpu, frameptr, sig, mmu_idx, smode) && |
8273 | v7m_stack_write(cpu, frameptr + 0x8, env->regs[4], mmu_idx, smode) && | |
8274 | v7m_stack_write(cpu, frameptr + 0xc, env->regs[5], mmu_idx, smode) && | |
8275 | v7m_stack_write(cpu, frameptr + 0x10, env->regs[6], mmu_idx, smode) && | |
8276 | v7m_stack_write(cpu, frameptr + 0x14, env->regs[7], mmu_idx, smode) && | |
8277 | v7m_stack_write(cpu, frameptr + 0x18, env->regs[8], mmu_idx, smode) && | |
8278 | v7m_stack_write(cpu, frameptr + 0x1c, env->regs[9], mmu_idx, smode) && | |
8279 | v7m_stack_write(cpu, frameptr + 0x20, env->regs[10], mmu_idx, smode) && | |
8280 | v7m_stack_write(cpu, frameptr + 0x24, env->regs[11], mmu_idx, smode); | |
65b4234f | 8281 | |
c32da7aa | 8282 | /* Update SP regardless of whether any of the stack accesses failed. */ |
d3392718 | 8283 | *frame_sp_p = frameptr; |
65b4234f PM |
8284 | |
8285 | return !stacked_ok; | |
d3392718 PM |
8286 | } |
8287 | ||
0094ca70 PM |
8288 | static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr, bool dotailchain, |
8289 | bool ignore_stackfaults) | |
39ae2474 PM |
8290 | { |
8291 | /* Do the "take the exception" parts of exception entry, | |
8292 | * but not the pushing of state to the stack. This is | |
8293 | * similar to the pseudocode ExceptionTaken() function. | |
8294 | */ | |
8295 | CPUARMState *env = &cpu->env; | |
8296 | uint32_t addr; | |
d3392718 | 8297 | bool targets_secure; |
6c948518 | 8298 | int exc; |
65b4234f | 8299 | bool push_failed = false; |
d3392718 | 8300 | |
6c948518 | 8301 | armv7m_nvic_get_pending_irq_info(env->nvic, &exc, &targets_secure); |
a9074977 PM |
8302 | qemu_log_mask(CPU_LOG_INT, "...taking pending %s exception %d\n", |
8303 | targets_secure ? "secure" : "nonsecure", exc); | |
d3392718 | 8304 | |
60fba59a PM |
8305 | if (dotailchain) { |
8306 | /* Sanitize LR FType and PREFIX bits */ | |
8307 | if (!arm_feature(env, ARM_FEATURE_VFP)) { | |
8308 | lr |= R_V7M_EXCRET_FTYPE_MASK; | |
8309 | } | |
8310 | lr = deposit32(lr, 24, 8, 0xff); | |
8311 | } | |
8312 | ||
d3392718 PM |
8313 | if (arm_feature(env, ARM_FEATURE_V8)) { |
8314 | if (arm_feature(env, ARM_FEATURE_M_SECURITY) && | |
8315 | (lr & R_V7M_EXCRET_S_MASK)) { | |
8316 | /* The background code (the owner of the registers in the | |
8317 | * exception frame) is Secure. This means it may either already | |
8318 | * have or now needs to push callee-saves registers. | |
8319 | */ | |
8320 | if (targets_secure) { | |
8321 | if (dotailchain && !(lr & R_V7M_EXCRET_ES_MASK)) { | |
8322 | /* We took an exception from Secure to NonSecure | |
8323 | * (which means the callee-saved registers got stacked) | |
8324 | * and are now tailchaining to a Secure exception. | |
8325 | * Clear DCRS so eventual return from this Secure | |
8326 | * exception unstacks the callee-saved registers. | |
8327 | */ | |
8328 | lr &= ~R_V7M_EXCRET_DCRS_MASK; | |
8329 | } | |
8330 | } else { | |
8331 | /* We're going to a non-secure exception; push the | |
8332 | * callee-saves registers to the stack now, if they're | |
8333 | * not already saved. | |
8334 | */ | |
8335 | if (lr & R_V7M_EXCRET_DCRS_MASK && | |
7b73a1ca | 8336 | !(dotailchain && !(lr & R_V7M_EXCRET_ES_MASK))) { |
65b4234f PM |
8337 | push_failed = v7m_push_callee_stack(cpu, lr, dotailchain, |
8338 | ignore_stackfaults); | |
d3392718 PM |
8339 | } |
8340 | lr |= R_V7M_EXCRET_DCRS_MASK; | |
8341 | } | |
8342 | } | |
8343 | ||
8344 | lr &= ~R_V7M_EXCRET_ES_MASK; | |
8345 | if (targets_secure || !arm_feature(env, ARM_FEATURE_M_SECURITY)) { | |
8346 | lr |= R_V7M_EXCRET_ES_MASK; | |
8347 | } | |
8348 | lr &= ~R_V7M_EXCRET_SPSEL_MASK; | |
8349 | if (env->v7m.control[targets_secure] & R_V7M_CONTROL_SPSEL_MASK) { | |
8350 | lr |= R_V7M_EXCRET_SPSEL_MASK; | |
8351 | } | |
8352 | ||
8353 | /* Clear registers if necessary to prevent non-secure exception | |
8354 | * code being able to see register values from secure code. | |
8355 | * Where register values become architecturally UNKNOWN we leave | |
8356 | * them with their previous values. | |
8357 | */ | |
8358 | if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { | |
8359 | if (!targets_secure) { | |
8360 | /* Always clear the caller-saved registers (they have been | |
8361 | * pushed to the stack earlier in v7m_push_stack()). | |
8362 | * Clear callee-saved registers if the background code is | |
8363 | * Secure (in which case these regs were saved in | |
8364 | * v7m_push_callee_stack()). | |
8365 | */ | |
8366 | int i; | |
8367 | ||
8368 | for (i = 0; i < 13; i++) { | |
8369 | /* r4..r11 are callee-saves, zero only if EXCRET.S == 1 */ | |
8370 | if (i < 4 || i > 11 || (lr & R_V7M_EXCRET_S_MASK)) { | |
8371 | env->regs[i] = 0; | |
8372 | } | |
8373 | } | |
8374 | /* Clear EAPSR */ | |
8375 | xpsr_write(env, 0, XPSR_NZCV | XPSR_Q | XPSR_GE | XPSR_IT); | |
8376 | } | |
8377 | } | |
8378 | } | |
39ae2474 | 8379 | |
65b4234f PM |
8380 | if (push_failed && !ignore_stackfaults) { |
8381 | /* Derived exception on callee-saves register stacking: | |
8382 | * we might now want to take a different exception which | |
8383 | * targets a different security state, so try again from the top. | |
8384 | */ | |
a9074977 PM |
8385 | qemu_log_mask(CPU_LOG_INT, |
8386 | "...derived exception on callee-saves register stacking"); | |
65b4234f PM |
8387 | v7m_exception_taken(cpu, lr, true, true); |
8388 | return; | |
8389 | } | |
8390 | ||
600c33f2 PM |
8391 | if (!arm_v7m_load_vector(cpu, exc, targets_secure, &addr)) { |
8392 | /* Vector load failed: derived exception */ | |
a9074977 | 8393 | qemu_log_mask(CPU_LOG_INT, "...derived exception on vector table load"); |
600c33f2 PM |
8394 | v7m_exception_taken(cpu, lr, true, true); |
8395 | return; | |
8396 | } | |
6c948518 PM |
8397 | |
8398 | /* Now we've done everything that might cause a derived exception | |
8399 | * we can go ahead and activate whichever exception we're going to | |
8400 | * take (which might now be the derived exception). | |
8401 | */ | |
8402 | armv7m_nvic_acknowledge_irq(env->nvic); | |
8403 | ||
d3392718 PM |
8404 | /* Switch to target security state -- must do this before writing SPSEL */ |
8405 | switch_v7m_security_state(env, targets_secure); | |
de2db7ec | 8406 | write_v7m_control_spsel(env, 0); |
dc3c4c14 | 8407 | arm_clear_exclusive(env); |
0ed377a8 PM |
8408 | /* Clear SFPA and FPCA (has no effect if no FPU) */ |
8409 | env->v7m.control[M_REG_S] &= | |
8410 | ~(R_V7M_CONTROL_FPCA_MASK | R_V7M_CONTROL_SFPA_MASK); | |
39ae2474 PM |
8411 | /* Clear IT bits */ |
8412 | env->condexec_bits = 0; | |
8413 | env->regs[14] = lr; | |
39ae2474 PM |
8414 | env->regs[15] = addr & 0xfffffffe; |
8415 | env->thumb = addr & 1; | |
8416 | } | |
8417 | ||
b593c2b8 PM |
8418 | static void v7m_update_fpccr(CPUARMState *env, uint32_t frameptr, |
8419 | bool apply_splim) | |
8420 | { | |
8421 | /* | |
8422 | * Like the pseudocode UpdateFPCCR: save state in FPCAR and FPCCR | |
8423 | * that we will need later in order to do lazy FP reg stacking. | |
8424 | */ | |
8425 | bool is_secure = env->v7m.secure; | |
8426 | void *nvic = env->nvic; | |
8427 | /* | |
8428 | * Some bits are unbanked and live always in fpccr[M_REG_S]; some bits | |
8429 | * are banked and we want to update the bit in the bank for the | |
8430 | * current security state; and in one case we want to specifically | |
8431 | * update the NS banked version of a bit even if we are secure. | |
8432 | */ | |
8433 | uint32_t *fpccr_s = &env->v7m.fpccr[M_REG_S]; | |
8434 | uint32_t *fpccr_ns = &env->v7m.fpccr[M_REG_NS]; | |
8435 | uint32_t *fpccr = &env->v7m.fpccr[is_secure]; | |
8436 | bool hfrdy, bfrdy, mmrdy, ns_ufrdy, s_ufrdy, sfrdy, monrdy; | |
8437 | ||
8438 | env->v7m.fpcar[is_secure] = frameptr & ~0x7; | |
8439 | ||
8440 | if (apply_splim && arm_feature(env, ARM_FEATURE_V8)) { | |
8441 | bool splimviol; | |
8442 | uint32_t splim = v7m_sp_limit(env); | |
8443 | bool ign = armv7m_nvic_neg_prio_requested(nvic, is_secure) && | |
8444 | (env->v7m.ccr[is_secure] & R_V7M_CCR_STKOFHFNMIGN_MASK); | |
8445 | ||
8446 | splimviol = !ign && frameptr < splim; | |
8447 | *fpccr = FIELD_DP32(*fpccr, V7M_FPCCR, SPLIMVIOL, splimviol); | |
8448 | } | |
8449 | ||
8450 | *fpccr = FIELD_DP32(*fpccr, V7M_FPCCR, LSPACT, 1); | |
8451 | ||
8452 | *fpccr_s = FIELD_DP32(*fpccr_s, V7M_FPCCR, S, is_secure); | |
8453 | ||
8454 | *fpccr = FIELD_DP32(*fpccr, V7M_FPCCR, USER, arm_current_el(env) == 0); | |
8455 | ||
8456 | *fpccr = FIELD_DP32(*fpccr, V7M_FPCCR, THREAD, | |
8457 | !arm_v7m_is_handler_mode(env)); | |
8458 | ||
8459 | hfrdy = armv7m_nvic_get_ready_status(nvic, ARMV7M_EXCP_HARD, false); | |
8460 | *fpccr_s = FIELD_DP32(*fpccr_s, V7M_FPCCR, HFRDY, hfrdy); | |
8461 | ||
8462 | bfrdy = armv7m_nvic_get_ready_status(nvic, ARMV7M_EXCP_BUS, false); | |
8463 | *fpccr_s = FIELD_DP32(*fpccr_s, V7M_FPCCR, BFRDY, bfrdy); | |
8464 | ||
8465 | mmrdy = armv7m_nvic_get_ready_status(nvic, ARMV7M_EXCP_MEM, is_secure); | |
8466 | *fpccr = FIELD_DP32(*fpccr, V7M_FPCCR, MMRDY, mmrdy); | |
8467 | ||
8468 | ns_ufrdy = armv7m_nvic_get_ready_status(nvic, ARMV7M_EXCP_USAGE, false); | |
8469 | *fpccr_ns = FIELD_DP32(*fpccr_ns, V7M_FPCCR, UFRDY, ns_ufrdy); | |
8470 | ||
8471 | monrdy = armv7m_nvic_get_ready_status(nvic, ARMV7M_EXCP_DEBUG, false); | |
8472 | *fpccr_s = FIELD_DP32(*fpccr_s, V7M_FPCCR, MONRDY, monrdy); | |
8473 | ||
8474 | if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { | |
8475 | s_ufrdy = armv7m_nvic_get_ready_status(nvic, ARMV7M_EXCP_USAGE, true); | |
8476 | *fpccr_s = FIELD_DP32(*fpccr_s, V7M_FPCCR, UFRDY, s_ufrdy); | |
8477 | ||
8478 | sfrdy = armv7m_nvic_get_ready_status(nvic, ARMV7M_EXCP_SECURE, false); | |
8479 | *fpccr_s = FIELD_DP32(*fpccr_s, V7M_FPCCR, SFRDY, sfrdy); | |
8480 | } | |
8481 | } | |
8482 | ||
019076b0 PM |
8483 | void HELPER(v7m_vlstm)(CPUARMState *env, uint32_t fptr) |
8484 | { | |
8485 | /* fptr is the value of Rn, the frame pointer we store the FP regs to */ | |
8486 | bool s = env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_S_MASK; | |
8487 | bool lspact = env->v7m.fpccr[s] & R_V7M_FPCCR_LSPACT_MASK; | |
8488 | ||
8489 | assert(env->v7m.secure); | |
8490 | ||
8491 | if (!(env->v7m.control[M_REG_S] & R_V7M_CONTROL_SFPA_MASK)) { | |
8492 | return; | |
8493 | } | |
8494 | ||
8495 | /* Check access to the coprocessor is permitted */ | |
8496 | if (!v7m_cpacr_pass(env, true, arm_current_el(env) != 0)) { | |
8497 | raise_exception_ra(env, EXCP_NOCP, 0, 1, GETPC()); | |
8498 | } | |
8499 | ||
8500 | if (lspact) { | |
8501 | /* LSPACT should not be active when there is active FP state */ | |
8502 | raise_exception_ra(env, EXCP_LSERR, 0, 1, GETPC()); | |
8503 | } | |
8504 | ||
8505 | if (fptr & 7) { | |
8506 | raise_exception_ra(env, EXCP_UNALIGNED, 0, 1, GETPC()); | |
8507 | } | |
8508 | ||
8509 | /* | |
8510 | * Note that we do not use v7m_stack_write() here, because the | |
8511 | * accesses should not set the FSR bits for stacking errors if they | |
8512 | * fail. (In pseudocode terms, they are AccType_NORMAL, not AccType_STACK | |
8513 | * or AccType_LAZYFP). Faults in cpu_stl_data() will throw exceptions | |
8514 | * and longjmp out. | |
8515 | */ | |
8516 | if (!(env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_LSPEN_MASK)) { | |
8517 | bool ts = env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_TS_MASK; | |
8518 | int i; | |
8519 | ||
8520 | for (i = 0; i < (ts ? 32 : 16); i += 2) { | |
8521 | uint64_t dn = *aa32_vfp_dreg(env, i / 2); | |
8522 | uint32_t faddr = fptr + 4 * i; | |
8523 | uint32_t slo = extract64(dn, 0, 32); | |
8524 | uint32_t shi = extract64(dn, 32, 32); | |
8525 | ||
8526 | if (i >= 16) { | |
8527 | faddr += 8; /* skip the slot for the FPSCR */ | |
8528 | } | |
8529 | cpu_stl_data(env, faddr, slo); | |
8530 | cpu_stl_data(env, faddr + 4, shi); | |
8531 | } | |
8532 | cpu_stl_data(env, fptr + 0x40, vfp_get_fpscr(env)); | |
8533 | ||
8534 | /* | |
8535 | * If TS is 0 then s0 to s15 and FPSCR are UNKNOWN; we choose to | |
8536 | * leave them unchanged, matching our choice in v7m_preserve_fp_state. | |
8537 | */ | |
8538 | if (ts) { | |
8539 | for (i = 0; i < 32; i += 2) { | |
8540 | *aa32_vfp_dreg(env, i / 2) = 0; | |
8541 | } | |
8542 | vfp_set_fpscr(env, 0); | |
8543 | } | |
8544 | } else { | |
8545 | v7m_update_fpccr(env, fptr, false); | |
8546 | } | |
8547 | ||
8548 | env->v7m.control[M_REG_S] &= ~R_V7M_CONTROL_FPCA_MASK; | |
8549 | } | |
8550 | ||
956fe143 PM |
8551 | void HELPER(v7m_vlldm)(CPUARMState *env, uint32_t fptr) |
8552 | { | |
8553 | /* fptr is the value of Rn, the frame pointer we load the FP regs from */ | |
8554 | assert(env->v7m.secure); | |
8555 | ||
8556 | if (!(env->v7m.control[M_REG_S] & R_V7M_CONTROL_SFPA_MASK)) { | |
8557 | return; | |
8558 | } | |
8559 | ||
8560 | /* Check access to the coprocessor is permitted */ | |
8561 | if (!v7m_cpacr_pass(env, true, arm_current_el(env) != 0)) { | |
8562 | raise_exception_ra(env, EXCP_NOCP, 0, 1, GETPC()); | |
8563 | } | |
8564 | ||
8565 | if (env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_LSPACT_MASK) { | |
8566 | /* State in FP is still valid */ | |
8567 | env->v7m.fpccr[M_REG_S] &= ~R_V7M_FPCCR_LSPACT_MASK; | |
8568 | } else { | |
8569 | bool ts = env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_TS_MASK; | |
8570 | int i; | |
8571 | uint32_t fpscr; | |
8572 | ||
8573 | if (fptr & 7) { | |
8574 | raise_exception_ra(env, EXCP_UNALIGNED, 0, 1, GETPC()); | |
8575 | } | |
8576 | ||
8577 | for (i = 0; i < (ts ? 32 : 16); i += 2) { | |
8578 | uint32_t slo, shi; | |
8579 | uint64_t dn; | |
8580 | uint32_t faddr = fptr + 4 * i; | |
8581 | ||
8582 | if (i >= 16) { | |
8583 | faddr += 8; /* skip the slot for the FPSCR */ | |
8584 | } | |
8585 | ||
8586 | slo = cpu_ldl_data(env, faddr); | |
8587 | shi = cpu_ldl_data(env, faddr + 4); | |
8588 | ||
8589 | dn = (uint64_t) shi << 32 | slo; | |
8590 | *aa32_vfp_dreg(env, i / 2) = dn; | |
8591 | } | |
8592 | fpscr = cpu_ldl_data(env, fptr + 0x40); | |
8593 | vfp_set_fpscr(env, fpscr); | |
8594 | } | |
8595 | ||
8596 | env->v7m.control[M_REG_S] |= R_V7M_CONTROL_FPCA_MASK; | |
8597 | } | |
8598 | ||
0094ca70 | 8599 | static bool v7m_push_stack(ARMCPU *cpu) |
39ae2474 PM |
8600 | { |
8601 | /* Do the "set up stack frame" part of exception entry, | |
8602 | * similar to pseudocode PushStack(). | |
0094ca70 PM |
8603 | * Return true if we generate a derived exception (and so |
8604 | * should ignore further stack faults trying to process | |
8605 | * that derived exception.) | |
39ae2474 | 8606 | */ |
3432c79a | 8607 | bool stacked_ok = true, limitviol = false; |
39ae2474 PM |
8608 | CPUARMState *env = &cpu->env; |
8609 | uint32_t xpsr = xpsr_read(env); | |
fd592d89 | 8610 | uint32_t frameptr = env->regs[13]; |
50494a27 | 8611 | ARMMMUIdx mmu_idx = arm_mmu_idx(env); |
0ed377a8 PM |
8612 | uint32_t framesize; |
8613 | bool nsacr_cp10 = extract32(env->v7m.nsacr, 10, 1); | |
8614 | ||
8615 | if ((env->v7m.control[M_REG_S] & R_V7M_CONTROL_FPCA_MASK) && | |
8616 | (env->v7m.secure || nsacr_cp10)) { | |
8617 | if (env->v7m.secure && | |
8618 | env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_TS_MASK) { | |
8619 | framesize = 0xa8; | |
8620 | } else { | |
8621 | framesize = 0x68; | |
8622 | } | |
8623 | } else { | |
8624 | framesize = 0x20; | |
8625 | } | |
39ae2474 PM |
8626 | |
8627 | /* Align stack pointer if the guest wants that */ | |
fd592d89 | 8628 | if ((frameptr & 4) && |
9d40cd8a | 8629 | (env->v7m.ccr[env->v7m.secure] & R_V7M_CCR_STKALIGN_MASK)) { |
fd592d89 | 8630 | frameptr -= 4; |
987ab45e | 8631 | xpsr |= XPSR_SPREALIGN; |
39ae2474 | 8632 | } |
0094ca70 | 8633 | |
0ed377a8 PM |
8634 | xpsr &= ~XPSR_SFPA; |
8635 | if (env->v7m.secure && | |
8636 | (env->v7m.control[M_REG_S] & R_V7M_CONTROL_SFPA_MASK)) { | |
8637 | xpsr |= XPSR_SFPA; | |
8638 | } | |
8639 | ||
8640 | frameptr -= framesize; | |
fd592d89 | 8641 | |
c32da7aa PM |
8642 | if (arm_feature(env, ARM_FEATURE_V8)) { |
8643 | uint32_t limit = v7m_sp_limit(env); | |
8644 | ||
8645 | if (frameptr < limit) { | |
8646 | /* | |
8647 | * Stack limit failure: set SP to the limit value, and generate | |
8648 | * STKOF UsageFault. Stack pushes below the limit must not be | |
8649 | * performed. It is IMPDEF whether pushes above the limit are | |
8650 | * performed; we choose not to. | |
8651 | */ | |
8652 | qemu_log_mask(CPU_LOG_INT, | |
8653 | "...STKOF during stacking\n"); | |
8654 | env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_STKOF_MASK; | |
8655 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, | |
8656 | env->v7m.secure); | |
8657 | env->regs[13] = limit; | |
3432c79a PM |
8658 | /* |
8659 | * We won't try to perform any further memory accesses but | |
8660 | * we must continue through the following code to check for | |
8661 | * permission faults during FPU state preservation, and we | |
8662 | * must update FPCCR if lazy stacking is enabled. | |
8663 | */ | |
8664 | limitviol = true; | |
8665 | stacked_ok = false; | |
c32da7aa PM |
8666 | } |
8667 | } | |
8668 | ||
fd592d89 PM |
8669 | /* Write as much of the stack frame as we can. If we fail a stack |
8670 | * write this will result in a derived exception being pended | |
8671 | * (which may be taken in preference to the one we started with | |
8672 | * if it has higher priority). | |
8673 | */ | |
3432c79a | 8674 | stacked_ok = stacked_ok && |
a356dacf PM |
8675 | v7m_stack_write(cpu, frameptr, env->regs[0], mmu_idx, STACK_NORMAL) && |
8676 | v7m_stack_write(cpu, frameptr + 4, env->regs[1], | |
8677 | mmu_idx, STACK_NORMAL) && | |
8678 | v7m_stack_write(cpu, frameptr + 8, env->regs[2], | |
8679 | mmu_idx, STACK_NORMAL) && | |
8680 | v7m_stack_write(cpu, frameptr + 12, env->regs[3], | |
8681 | mmu_idx, STACK_NORMAL) && | |
8682 | v7m_stack_write(cpu, frameptr + 16, env->regs[12], | |
8683 | mmu_idx, STACK_NORMAL) && | |
8684 | v7m_stack_write(cpu, frameptr + 20, env->regs[14], | |
8685 | mmu_idx, STACK_NORMAL) && | |
8686 | v7m_stack_write(cpu, frameptr + 24, env->regs[15], | |
8687 | mmu_idx, STACK_NORMAL) && | |
8688 | v7m_stack_write(cpu, frameptr + 28, xpsr, mmu_idx, STACK_NORMAL); | |
fd592d89 | 8689 | |
0ed377a8 PM |
8690 | if (env->v7m.control[M_REG_S] & R_V7M_CONTROL_FPCA_MASK) { |
8691 | /* FPU is active, try to save its registers */ | |
8692 | bool fpccr_s = env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_S_MASK; | |
8693 | bool lspact = env->v7m.fpccr[fpccr_s] & R_V7M_FPCCR_LSPACT_MASK; | |
8694 | ||
8695 | if (lspact && arm_feature(env, ARM_FEATURE_M_SECURITY)) { | |
8696 | qemu_log_mask(CPU_LOG_INT, | |
8697 | "...SecureFault because LSPACT and FPCA both set\n"); | |
8698 | env->v7m.sfsr |= R_V7M_SFSR_LSERR_MASK; | |
8699 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SECURE, false); | |
8700 | } else if (!env->v7m.secure && !nsacr_cp10) { | |
8701 | qemu_log_mask(CPU_LOG_INT, | |
8702 | "...Secure UsageFault with CFSR.NOCP because " | |
8703 | "NSACR.CP10 prevents stacking FP regs\n"); | |
8704 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, M_REG_S); | |
8705 | env->v7m.cfsr[M_REG_S] |= R_V7M_CFSR_NOCP_MASK; | |
8706 | } else { | |
8707 | if (!(env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_LSPEN_MASK)) { | |
8708 | /* Lazy stacking disabled, save registers now */ | |
8709 | int i; | |
8710 | bool cpacr_pass = v7m_cpacr_pass(env, env->v7m.secure, | |
8711 | arm_current_el(env) != 0); | |
8712 | ||
8713 | if (stacked_ok && !cpacr_pass) { | |
8714 | /* | |
8715 | * Take UsageFault if CPACR forbids access. The pseudocode | |
8716 | * here does a full CheckCPEnabled() but we know the NSACR | |
8717 | * check can never fail as we have already handled that. | |
8718 | */ | |
8719 | qemu_log_mask(CPU_LOG_INT, | |
8720 | "...UsageFault with CFSR.NOCP because " | |
8721 | "CPACR.CP10 prevents stacking FP regs\n"); | |
8722 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, | |
8723 | env->v7m.secure); | |
8724 | env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_NOCP_MASK; | |
8725 | stacked_ok = false; | |
8726 | } | |
8727 | ||
8728 | for (i = 0; i < ((framesize == 0xa8) ? 32 : 16); i += 2) { | |
8729 | uint64_t dn = *aa32_vfp_dreg(env, i / 2); | |
8730 | uint32_t faddr = frameptr + 0x20 + 4 * i; | |
8731 | uint32_t slo = extract64(dn, 0, 32); | |
8732 | uint32_t shi = extract64(dn, 32, 32); | |
8733 | ||
8734 | if (i >= 16) { | |
8735 | faddr += 8; /* skip the slot for the FPSCR */ | |
8736 | } | |
8737 | stacked_ok = stacked_ok && | |
a356dacf PM |
8738 | v7m_stack_write(cpu, faddr, slo, |
8739 | mmu_idx, STACK_NORMAL) && | |
8740 | v7m_stack_write(cpu, faddr + 4, shi, | |
8741 | mmu_idx, STACK_NORMAL); | |
0ed377a8 PM |
8742 | } |
8743 | stacked_ok = stacked_ok && | |
8744 | v7m_stack_write(cpu, frameptr + 0x60, | |
a356dacf | 8745 | vfp_get_fpscr(env), mmu_idx, STACK_NORMAL); |
0ed377a8 PM |
8746 | if (cpacr_pass) { |
8747 | for (i = 0; i < ((framesize == 0xa8) ? 32 : 16); i += 2) { | |
8748 | *aa32_vfp_dreg(env, i / 2) = 0; | |
8749 | } | |
8750 | vfp_set_fpscr(env, 0); | |
8751 | } | |
8752 | } else { | |
8753 | /* Lazy stacking enabled, save necessary info to stack later */ | |
b593c2b8 | 8754 | v7m_update_fpccr(env, frameptr + 0x20, true); |
0ed377a8 PM |
8755 | } |
8756 | } | |
8757 | } | |
8758 | ||
3432c79a PM |
8759 | /* |
8760 | * If we broke a stack limit then SP was already updated earlier; | |
8761 | * otherwise we update SP regardless of whether any of the stack | |
8762 | * accesses failed or we took some other kind of fault. | |
8763 | */ | |
8764 | if (!limitviol) { | |
8765 | env->regs[13] = frameptr; | |
8766 | } | |
fd592d89 PM |
8767 | |
8768 | return !stacked_ok; | |
39ae2474 PM |
8769 | } |
8770 | ||
aa488fe3 | 8771 | static void do_v7m_exception_exit(ARMCPU *cpu) |
9ee6e8bb | 8772 | { |
aa488fe3 | 8773 | CPUARMState *env = &cpu->env; |
351e527a | 8774 | uint32_t excret; |
f1e2598c | 8775 | uint32_t xpsr, xpsr_mask; |
aa488fe3 | 8776 | bool ufault = false; |
bfb2eb52 PM |
8777 | bool sfault = false; |
8778 | bool return_to_sp_process; | |
8779 | bool return_to_handler; | |
aa488fe3 | 8780 | bool rettobase = false; |
5cb18069 | 8781 | bool exc_secure = false; |
5b522399 | 8782 | bool return_to_secure; |
6808c4d2 PM |
8783 | bool ftype; |
8784 | bool restore_s16_s31; | |
aa488fe3 | 8785 | |
d02a8698 PM |
8786 | /* If we're not in Handler mode then jumps to magic exception-exit |
8787 | * addresses don't have magic behaviour. However for the v8M | |
8788 | * security extensions the magic secure-function-return has to | |
8789 | * work in thread mode too, so to avoid doing an extra check in | |
8790 | * the generated code we allow exception-exit magic to also cause the | |
8791 | * internal exception and bring us here in thread mode. Correct code | |
8792 | * will never try to do this (the following insn fetch will always | |
8793 | * fault) so we the overhead of having taken an unnecessary exception | |
8794 | * doesn't matter. | |
aa488fe3 | 8795 | */ |
d02a8698 PM |
8796 | if (!arm_v7m_is_handler_mode(env)) { |
8797 | return; | |
8798 | } | |
aa488fe3 PM |
8799 | |
8800 | /* In the spec pseudocode ExceptionReturn() is called directly | |
8801 | * from BXWritePC() and gets the full target PC value including | |
8802 | * bit zero. In QEMU's implementation we treat it as a normal | |
8803 | * jump-to-register (which is then caught later on), and so split | |
8804 | * the target value up between env->regs[15] and env->thumb in | |
8805 | * gen_bx(). Reconstitute it. | |
8806 | */ | |
351e527a | 8807 | excret = env->regs[15]; |
aa488fe3 | 8808 | if (env->thumb) { |
351e527a | 8809 | excret |= 1; |
aa488fe3 PM |
8810 | } |
8811 | ||
8812 | qemu_log_mask(CPU_LOG_INT, "Exception return: magic PC %" PRIx32 | |
8813 | " previous exception %d\n", | |
351e527a | 8814 | excret, env->v7m.exception); |
aa488fe3 | 8815 | |
351e527a | 8816 | if ((excret & R_V7M_EXCRET_RES1_MASK) != R_V7M_EXCRET_RES1_MASK) { |
aa488fe3 | 8817 | qemu_log_mask(LOG_GUEST_ERROR, "M profile: zero high bits in exception " |
351e527a PM |
8818 | "exit PC value 0x%" PRIx32 " are UNPREDICTABLE\n", |
8819 | excret); | |
aa488fe3 PM |
8820 | } |
8821 | ||
6808c4d2 PM |
8822 | ftype = excret & R_V7M_EXCRET_FTYPE_MASK; |
8823 | ||
8824 | if (!arm_feature(env, ARM_FEATURE_VFP) && !ftype) { | |
8825 | qemu_log_mask(LOG_GUEST_ERROR, "M profile: zero FTYPE in exception " | |
8826 | "exit PC value 0x%" PRIx32 " is UNPREDICTABLE " | |
8827 | "if FPU not present\n", | |
8828 | excret); | |
8829 | ftype = true; | |
8830 | } | |
8831 | ||
bfb2eb52 PM |
8832 | if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { |
8833 | /* EXC_RETURN.ES validation check (R_SMFL). We must do this before | |
8834 | * we pick which FAULTMASK to clear. | |
8835 | */ | |
8836 | if (!env->v7m.secure && | |
8837 | ((excret & R_V7M_EXCRET_ES_MASK) || | |
8838 | !(excret & R_V7M_EXCRET_DCRS_MASK))) { | |
8839 | sfault = 1; | |
8840 | /* For all other purposes, treat ES as 0 (R_HXSR) */ | |
8841 | excret &= ~R_V7M_EXCRET_ES_MASK; | |
8842 | } | |
b8109608 | 8843 | exc_secure = excret & R_V7M_EXCRET_ES_MASK; |
bfb2eb52 PM |
8844 | } |
8845 | ||
a20ee600 | 8846 | if (env->v7m.exception != ARMV7M_EXCP_NMI) { |
42a6686b PM |
8847 | /* Auto-clear FAULTMASK on return from other than NMI. |
8848 | * If the security extension is implemented then this only | |
8849 | * happens if the raw execution priority is >= 0; the | |
8850 | * value of the ES bit in the exception return value indicates | |
8851 | * which security state's faultmask to clear. (v8M ARM ARM R_KBNF.) | |
8852 | */ | |
8853 | if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { | |
42a6686b | 8854 | if (armv7m_nvic_raw_execution_priority(env->nvic) >= 0) { |
5cb18069 | 8855 | env->v7m.faultmask[exc_secure] = 0; |
42a6686b PM |
8856 | } |
8857 | } else { | |
8858 | env->v7m.faultmask[M_REG_NS] = 0; | |
8859 | } | |
a20ee600 | 8860 | } |
aa488fe3 | 8861 | |
5cb18069 PM |
8862 | switch (armv7m_nvic_complete_irq(env->nvic, env->v7m.exception, |
8863 | exc_secure)) { | |
aa488fe3 PM |
8864 | case -1: |
8865 | /* attempt to exit an exception that isn't active */ | |
8866 | ufault = true; | |
8867 | break; | |
8868 | case 0: | |
8869 | /* still an irq active now */ | |
8870 | break; | |
8871 | case 1: | |
8872 | /* we returned to base exception level, no nesting. | |
8873 | * (In the pseudocode this is written using "NestedActivation != 1" | |
8874 | * where we have 'rettobase == false'.) | |
8875 | */ | |
8876 | rettobase = true; | |
8877 | break; | |
8878 | default: | |
8879 | g_assert_not_reached(); | |
8880 | } | |
8881 | ||
bfb2eb52 PM |
8882 | return_to_handler = !(excret & R_V7M_EXCRET_MODE_MASK); |
8883 | return_to_sp_process = excret & R_V7M_EXCRET_SPSEL_MASK; | |
5b522399 PM |
8884 | return_to_secure = arm_feature(env, ARM_FEATURE_M_SECURITY) && |
8885 | (excret & R_V7M_EXCRET_S_MASK); | |
8886 | ||
bfb2eb52 PM |
8887 | if (arm_feature(env, ARM_FEATURE_V8)) { |
8888 | if (!arm_feature(env, ARM_FEATURE_M_SECURITY)) { | |
8889 | /* UNPREDICTABLE if S == 1 or DCRS == 0 or ES == 1 (R_XLCP); | |
8890 | * we choose to take the UsageFault. | |
8891 | */ | |
8892 | if ((excret & R_V7M_EXCRET_S_MASK) || | |
8893 | (excret & R_V7M_EXCRET_ES_MASK) || | |
8894 | !(excret & R_V7M_EXCRET_DCRS_MASK)) { | |
8895 | ufault = true; | |
8896 | } | |
8897 | } | |
8898 | if (excret & R_V7M_EXCRET_RES0_MASK) { | |
aa488fe3 PM |
8899 | ufault = true; |
8900 | } | |
bfb2eb52 PM |
8901 | } else { |
8902 | /* For v7M we only recognize certain combinations of the low bits */ | |
8903 | switch (excret & 0xf) { | |
8904 | case 1: /* Return to Handler */ | |
8905 | break; | |
8906 | case 13: /* Return to Thread using Process stack */ | |
8907 | case 9: /* Return to Thread using Main stack */ | |
8908 | /* We only need to check NONBASETHRDENA for v7M, because in | |
8909 | * v8M this bit does not exist (it is RES1). | |
8910 | */ | |
8911 | if (!rettobase && | |
8912 | !(env->v7m.ccr[env->v7m.secure] & | |
8913 | R_V7M_CCR_NONBASETHRDENA_MASK)) { | |
8914 | ufault = true; | |
8915 | } | |
8916 | break; | |
8917 | default: | |
8918 | ufault = true; | |
8919 | } | |
8920 | } | |
8921 | ||
89b1fec1 PM |
8922 | /* |
8923 | * Set CONTROL.SPSEL from excret.SPSEL. Since we're still in | |
8924 | * Handler mode (and will be until we write the new XPSR.Interrupt | |
8925 | * field) this does not switch around the current stack pointer. | |
8926 | * We must do this before we do any kind of tailchaining, including | |
8927 | * for the derived exceptions on integrity check failures, or we will | |
8928 | * give the guest an incorrect EXCRET.SPSEL value on exception entry. | |
8929 | */ | |
8930 | write_v7m_control_spsel_for_secstate(env, return_to_sp_process, exc_secure); | |
8931 | ||
6808c4d2 PM |
8932 | /* |
8933 | * Clear scratch FP values left in caller saved registers; this | |
8934 | * must happen before any kind of tail chaining. | |
8935 | */ | |
8936 | if ((env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_CLRONRET_MASK) && | |
8937 | (env->v7m.control[M_REG_S] & R_V7M_CONTROL_FPCA_MASK)) { | |
8938 | if (env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_LSPACT_MASK) { | |
8939 | env->v7m.sfsr |= R_V7M_SFSR_LSERR_MASK; | |
8940 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SECURE, false); | |
8941 | qemu_log_mask(CPU_LOG_INT, "...taking SecureFault on existing " | |
8942 | "stackframe: error during lazy state deactivation\n"); | |
8943 | v7m_exception_taken(cpu, excret, true, false); | |
8944 | return; | |
8945 | } else { | |
8946 | /* Clear s0..s15 and FPSCR */ | |
8947 | int i; | |
8948 | ||
8949 | for (i = 0; i < 16; i += 2) { | |
8950 | *aa32_vfp_dreg(env, i / 2) = 0; | |
8951 | } | |
8952 | vfp_set_fpscr(env, 0); | |
8953 | } | |
8954 | } | |
8955 | ||
bfb2eb52 PM |
8956 | if (sfault) { |
8957 | env->v7m.sfsr |= R_V7M_SFSR_INVER_MASK; | |
8958 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SECURE, false); | |
bfb2eb52 PM |
8959 | qemu_log_mask(CPU_LOG_INT, "...taking SecureFault on existing " |
8960 | "stackframe: failed EXC_RETURN.ES validity check\n"); | |
a9074977 | 8961 | v7m_exception_taken(cpu, excret, true, false); |
bfb2eb52 | 8962 | return; |
aa488fe3 PM |
8963 | } |
8964 | ||
8965 | if (ufault) { | |
8966 | /* Bad exception return: instead of popping the exception | |
8967 | * stack, directly take a usage fault on the current stack. | |
8968 | */ | |
334e8dad | 8969 | env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_INVPC_MASK; |
2fb50a33 | 8970 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, env->v7m.secure); |
aa488fe3 PM |
8971 | qemu_log_mask(CPU_LOG_INT, "...taking UsageFault on existing " |
8972 | "stackframe: failed exception return integrity check\n"); | |
a9074977 | 8973 | v7m_exception_taken(cpu, excret, true, false); |
aa488fe3 | 8974 | return; |
a20ee600 | 8975 | } |
9ee6e8bb | 8976 | |
5f62d3b9 PM |
8977 | /* |
8978 | * Tailchaining: if there is currently a pending exception that | |
8979 | * is high enough priority to preempt execution at the level we're | |
8980 | * about to return to, then just directly take that exception now, | |
8981 | * avoiding an unstack-and-then-stack. Note that now we have | |
8982 | * deactivated the previous exception by calling armv7m_nvic_complete_irq() | |
8983 | * our current execution priority is already the execution priority we are | |
8984 | * returning to -- none of the state we would unstack or set based on | |
8985 | * the EXCRET value affects it. | |
8986 | */ | |
8987 | if (armv7m_nvic_can_take_pending_exception(env->nvic)) { | |
8988 | qemu_log_mask(CPU_LOG_INT, "...tailchaining to pending exception\n"); | |
8989 | v7m_exception_taken(cpu, excret, true, false); | |
8990 | return; | |
8991 | } | |
8992 | ||
3919e60b PM |
8993 | switch_v7m_security_state(env, return_to_secure); |
8994 | ||
5b522399 PM |
8995 | { |
8996 | /* The stack pointer we should be reading the exception frame from | |
8997 | * depends on bits in the magic exception return type value (and | |
8998 | * for v8M isn't necessarily the stack pointer we will eventually | |
8999 | * end up resuming execution with). Get a pointer to the location | |
9000 | * in the CPU state struct where the SP we need is currently being | |
9001 | * stored; we will use and modify it in place. | |
9002 | * We use this limited C variable scope so we don't accidentally | |
9003 | * use 'frame_sp_p' after we do something that makes it invalid. | |
fcf83ab1 | 9004 | */ |
5b522399 PM |
9005 | uint32_t *frame_sp_p = get_v7m_sp_ptr(env, |
9006 | return_to_secure, | |
9007 | !return_to_handler, | |
9008 | return_to_sp_process); | |
9009 | uint32_t frameptr = *frame_sp_p; | |
95695eff PM |
9010 | bool pop_ok = true; |
9011 | ARMMMUIdx mmu_idx; | |
2b83714d PM |
9012 | bool return_to_priv = return_to_handler || |
9013 | !(env->v7m.control[return_to_secure] & R_V7M_CONTROL_NPRIV_MASK); | |
95695eff PM |
9014 | |
9015 | mmu_idx = arm_v7m_mmu_idx_for_secstate_and_priv(env, return_to_secure, | |
2b83714d | 9016 | return_to_priv); |
5b522399 | 9017 | |
cb484f9a PM |
9018 | if (!QEMU_IS_ALIGNED(frameptr, 8) && |
9019 | arm_feature(env, ARM_FEATURE_V8)) { | |
9020 | qemu_log_mask(LOG_GUEST_ERROR, | |
9021 | "M profile exception return with non-8-aligned SP " | |
9022 | "for destination state is UNPREDICTABLE\n"); | |
9023 | } | |
9024 | ||
907bedb3 PM |
9025 | /* Do we need to pop callee-saved registers? */ |
9026 | if (return_to_secure && | |
9027 | ((excret & R_V7M_EXCRET_ES_MASK) == 0 || | |
9028 | (excret & R_V7M_EXCRET_DCRS_MASK) == 0)) { | |
4818bad9 PM |
9029 | uint32_t actual_sig; |
9030 | ||
9031 | pop_ok = v7m_stack_read(cpu, &actual_sig, frameptr, mmu_idx); | |
907bedb3 | 9032 | |
0dc51d66 | 9033 | if (pop_ok && v7m_integrity_sig(env, excret) != actual_sig) { |
907bedb3 PM |
9034 | /* Take a SecureFault on the current stack */ |
9035 | env->v7m.sfsr |= R_V7M_SFSR_INVIS_MASK; | |
9036 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SECURE, false); | |
907bedb3 PM |
9037 | qemu_log_mask(CPU_LOG_INT, "...taking SecureFault on existing " |
9038 | "stackframe: failed exception return integrity " | |
9039 | "signature check\n"); | |
a9074977 | 9040 | v7m_exception_taken(cpu, excret, true, false); |
907bedb3 PM |
9041 | return; |
9042 | } | |
9043 | ||
4818bad9 | 9044 | pop_ok = pop_ok && |
95695eff PM |
9045 | v7m_stack_read(cpu, &env->regs[4], frameptr + 0x8, mmu_idx) && |
9046 | v7m_stack_read(cpu, &env->regs[5], frameptr + 0xc, mmu_idx) && | |
9047 | v7m_stack_read(cpu, &env->regs[6], frameptr + 0x10, mmu_idx) && | |
9048 | v7m_stack_read(cpu, &env->regs[7], frameptr + 0x14, mmu_idx) && | |
9049 | v7m_stack_read(cpu, &env->regs[8], frameptr + 0x18, mmu_idx) && | |
9050 | v7m_stack_read(cpu, &env->regs[9], frameptr + 0x1c, mmu_idx) && | |
9051 | v7m_stack_read(cpu, &env->regs[10], frameptr + 0x20, mmu_idx) && | |
9052 | v7m_stack_read(cpu, &env->regs[11], frameptr + 0x24, mmu_idx); | |
907bedb3 PM |
9053 | |
9054 | frameptr += 0x28; | |
9055 | } | |
9056 | ||
95695eff PM |
9057 | /* Pop registers */ |
9058 | pop_ok = pop_ok && | |
9059 | v7m_stack_read(cpu, &env->regs[0], frameptr, mmu_idx) && | |
9060 | v7m_stack_read(cpu, &env->regs[1], frameptr + 0x4, mmu_idx) && | |
9061 | v7m_stack_read(cpu, &env->regs[2], frameptr + 0x8, mmu_idx) && | |
9062 | v7m_stack_read(cpu, &env->regs[3], frameptr + 0xc, mmu_idx) && | |
9063 | v7m_stack_read(cpu, &env->regs[12], frameptr + 0x10, mmu_idx) && | |
9064 | v7m_stack_read(cpu, &env->regs[14], frameptr + 0x14, mmu_idx) && | |
9065 | v7m_stack_read(cpu, &env->regs[15], frameptr + 0x18, mmu_idx) && | |
9066 | v7m_stack_read(cpu, &xpsr, frameptr + 0x1c, mmu_idx); | |
9067 | ||
9068 | if (!pop_ok) { | |
9069 | /* v7m_stack_read() pended a fault, so take it (as a tail | |
9070 | * chained exception on the same stack frame) | |
9071 | */ | |
a9074977 | 9072 | qemu_log_mask(CPU_LOG_INT, "...derived exception on unstacking\n"); |
95695eff PM |
9073 | v7m_exception_taken(cpu, excret, true, false); |
9074 | return; | |
9075 | } | |
4e4259d3 PM |
9076 | |
9077 | /* Returning from an exception with a PC with bit 0 set is defined | |
9078 | * behaviour on v8M (bit 0 is ignored), but for v7M it was specified | |
9079 | * to be UNPREDICTABLE. In practice actual v7M hardware seems to ignore | |
9080 | * the lsbit, and there are several RTOSes out there which incorrectly | |
9081 | * assume the r15 in the stack frame should be a Thumb-style "lsbit | |
9082 | * indicates ARM/Thumb" value, so ignore the bit on v7M as well, but | |
9083 | * complain about the badly behaved guest. | |
9084 | */ | |
5b522399 | 9085 | if (env->regs[15] & 1) { |
5b522399 | 9086 | env->regs[15] &= ~1U; |
4e4259d3 PM |
9087 | if (!arm_feature(env, ARM_FEATURE_V8)) { |
9088 | qemu_log_mask(LOG_GUEST_ERROR, | |
9089 | "M profile return from interrupt with misaligned " | |
9090 | "PC is UNPREDICTABLE on v7M\n"); | |
9091 | } | |
5b522399 | 9092 | } |
4e4259d3 | 9093 | |
224e0c30 PM |
9094 | if (arm_feature(env, ARM_FEATURE_V8)) { |
9095 | /* For v8M we have to check whether the xPSR exception field | |
9096 | * matches the EXCRET value for return to handler/thread | |
9097 | * before we commit to changing the SP and xPSR. | |
9098 | */ | |
9099 | bool will_be_handler = (xpsr & XPSR_EXCP) != 0; | |
9100 | if (return_to_handler != will_be_handler) { | |
9101 | /* Take an INVPC UsageFault on the current stack. | |
9102 | * By this point we will have switched to the security state | |
9103 | * for the background state, so this UsageFault will target | |
9104 | * that state. | |
9105 | */ | |
9106 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, | |
9107 | env->v7m.secure); | |
9108 | env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_INVPC_MASK; | |
224e0c30 PM |
9109 | qemu_log_mask(CPU_LOG_INT, "...taking UsageFault on existing " |
9110 | "stackframe: failed exception return integrity " | |
9111 | "check\n"); | |
a9074977 | 9112 | v7m_exception_taken(cpu, excret, true, false); |
224e0c30 PM |
9113 | return; |
9114 | } | |
9115 | } | |
9116 | ||
6808c4d2 PM |
9117 | if (!ftype) { |
9118 | /* FP present and we need to handle it */ | |
9119 | if (!return_to_secure && | |
9120 | (env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_LSPACT_MASK)) { | |
9121 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SECURE, false); | |
9122 | env->v7m.sfsr |= R_V7M_SFSR_LSERR_MASK; | |
9123 | qemu_log_mask(CPU_LOG_INT, | |
9124 | "...taking SecureFault on existing stackframe: " | |
9125 | "Secure LSPACT set but exception return is " | |
9126 | "not to secure state\n"); | |
9127 | v7m_exception_taken(cpu, excret, true, false); | |
9128 | return; | |
9129 | } | |
9130 | ||
9131 | restore_s16_s31 = return_to_secure && | |
9132 | (env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_TS_MASK); | |
9133 | ||
9134 | if (env->v7m.fpccr[return_to_secure] & R_V7M_FPCCR_LSPACT_MASK) { | |
9135 | /* State in FPU is still valid, just clear LSPACT */ | |
9136 | env->v7m.fpccr[return_to_secure] &= ~R_V7M_FPCCR_LSPACT_MASK; | |
9137 | } else { | |
9138 | int i; | |
9139 | uint32_t fpscr; | |
9140 | bool cpacr_pass, nsacr_pass; | |
9141 | ||
9142 | cpacr_pass = v7m_cpacr_pass(env, return_to_secure, | |
9143 | return_to_priv); | |
9144 | nsacr_pass = return_to_secure || | |
9145 | extract32(env->v7m.nsacr, 10, 1); | |
9146 | ||
9147 | if (!cpacr_pass) { | |
9148 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, | |
9149 | return_to_secure); | |
9150 | env->v7m.cfsr[return_to_secure] |= R_V7M_CFSR_NOCP_MASK; | |
9151 | qemu_log_mask(CPU_LOG_INT, | |
9152 | "...taking UsageFault on existing " | |
9153 | "stackframe: CPACR.CP10 prevents unstacking " | |
9154 | "FP regs\n"); | |
9155 | v7m_exception_taken(cpu, excret, true, false); | |
9156 | return; | |
9157 | } else if (!nsacr_pass) { | |
9158 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, true); | |
9159 | env->v7m.cfsr[M_REG_S] |= R_V7M_CFSR_INVPC_MASK; | |
9160 | qemu_log_mask(CPU_LOG_INT, | |
9161 | "...taking Secure UsageFault on existing " | |
9162 | "stackframe: NSACR.CP10 prevents unstacking " | |
9163 | "FP regs\n"); | |
9164 | v7m_exception_taken(cpu, excret, true, false); | |
9165 | return; | |
9166 | } | |
9167 | ||
9168 | for (i = 0; i < (restore_s16_s31 ? 32 : 16); i += 2) { | |
9169 | uint32_t slo, shi; | |
9170 | uint64_t dn; | |
9171 | uint32_t faddr = frameptr + 0x20 + 4 * i; | |
9172 | ||
9173 | if (i >= 16) { | |
9174 | faddr += 8; /* Skip the slot for the FPSCR */ | |
9175 | } | |
9176 | ||
9177 | pop_ok = pop_ok && | |
9178 | v7m_stack_read(cpu, &slo, faddr, mmu_idx) && | |
9179 | v7m_stack_read(cpu, &shi, faddr + 4, mmu_idx); | |
9180 | ||
9181 | if (!pop_ok) { | |
9182 | break; | |
9183 | } | |
9184 | ||
9185 | dn = (uint64_t)shi << 32 | slo; | |
9186 | *aa32_vfp_dreg(env, i / 2) = dn; | |
9187 | } | |
9188 | pop_ok = pop_ok && | |
9189 | v7m_stack_read(cpu, &fpscr, frameptr + 0x60, mmu_idx); | |
9190 | if (pop_ok) { | |
9191 | vfp_set_fpscr(env, fpscr); | |
9192 | } | |
9193 | if (!pop_ok) { | |
9194 | /* | |
9195 | * These regs are 0 if security extension present; | |
9196 | * otherwise merely UNKNOWN. We zero always. | |
9197 | */ | |
9198 | for (i = 0; i < (restore_s16_s31 ? 32 : 16); i += 2) { | |
9199 | *aa32_vfp_dreg(env, i / 2) = 0; | |
9200 | } | |
9201 | vfp_set_fpscr(env, 0); | |
9202 | } | |
9203 | } | |
9204 | } | |
9205 | env->v7m.control[M_REG_S] = FIELD_DP32(env->v7m.control[M_REG_S], | |
9206 | V7M_CONTROL, FPCA, !ftype); | |
9207 | ||
5b522399 PM |
9208 | /* Commit to consuming the stack frame */ |
9209 | frameptr += 0x20; | |
6808c4d2 PM |
9210 | if (!ftype) { |
9211 | frameptr += 0x48; | |
9212 | if (restore_s16_s31) { | |
9213 | frameptr += 0x40; | |
9214 | } | |
9215 | } | |
5b522399 PM |
9216 | /* Undo stack alignment (the SPREALIGN bit indicates that the original |
9217 | * pre-exception SP was not 8-aligned and we added a padding word to | |
9218 | * align it, so we undo this by ORing in the bit that increases it | |
9219 | * from the current 8-aligned value to the 8-unaligned value. (Adding 4 | |
9220 | * would work too but a logical OR is how the pseudocode specifies it.) | |
9221 | */ | |
9222 | if (xpsr & XPSR_SPREALIGN) { | |
9223 | frameptr |= 4; | |
9224 | } | |
9225 | *frame_sp_p = frameptr; | |
fcf83ab1 | 9226 | } |
f1e2598c PM |
9227 | |
9228 | xpsr_mask = ~(XPSR_SPREALIGN | XPSR_SFPA); | |
9229 | if (!arm_feature(env, ARM_FEATURE_THUMB_DSP)) { | |
9230 | xpsr_mask &= ~XPSR_GE; | |
9231 | } | |
5b522399 | 9232 | /* This xpsr_write() will invalidate frame_sp_p as it may switch stack */ |
f1e2598c | 9233 | xpsr_write(env, xpsr, xpsr_mask); |
6808c4d2 PM |
9234 | |
9235 | if (env->v7m.secure) { | |
9236 | bool sfpa = xpsr & XPSR_SFPA; | |
9237 | ||
9238 | env->v7m.control[M_REG_S] = FIELD_DP32(env->v7m.control[M_REG_S], | |
9239 | V7M_CONTROL, SFPA, sfpa); | |
9240 | } | |
aa488fe3 PM |
9241 | |
9242 | /* The restored xPSR exception field will be zero if we're | |
9243 | * resuming in Thread mode. If that doesn't match what the | |
351e527a | 9244 | * exception return excret specified then this is a UsageFault. |
224e0c30 | 9245 | * v7M requires we make this check here; v8M did it earlier. |
aa488fe3 | 9246 | */ |
15b3f556 | 9247 | if (return_to_handler != arm_v7m_is_handler_mode(env)) { |
224e0c30 PM |
9248 | /* Take an INVPC UsageFault by pushing the stack again; |
9249 | * we know we're v7M so this is never a Secure UsageFault. | |
2fb50a33 | 9250 | */ |
0094ca70 PM |
9251 | bool ignore_stackfaults; |
9252 | ||
224e0c30 | 9253 | assert(!arm_feature(env, ARM_FEATURE_V8)); |
2fb50a33 | 9254 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, false); |
334e8dad | 9255 | env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_INVPC_MASK; |
0094ca70 | 9256 | ignore_stackfaults = v7m_push_stack(cpu); |
aa488fe3 PM |
9257 | qemu_log_mask(CPU_LOG_INT, "...taking UsageFault on new stackframe: " |
9258 | "failed exception return integrity check\n"); | |
a9074977 | 9259 | v7m_exception_taken(cpu, excret, false, ignore_stackfaults); |
aa488fe3 PM |
9260 | return; |
9261 | } | |
9262 | ||
9263 | /* Otherwise, we have a successful exception exit. */ | |
dc3c4c14 | 9264 | arm_clear_exclusive(env); |
aa488fe3 | 9265 | qemu_log_mask(CPU_LOG_INT, "...successful exception return\n"); |
9ee6e8bb PB |
9266 | } |
9267 | ||
d02a8698 PM |
9268 | static bool do_v7m_function_return(ARMCPU *cpu) |
9269 | { | |
9270 | /* v8M security extensions magic function return. | |
9271 | * We may either: | |
9272 | * (1) throw an exception (longjump) | |
9273 | * (2) return true if we successfully handled the function return | |
9274 | * (3) return false if we failed a consistency check and have | |
9275 | * pended a UsageFault that needs to be taken now | |
9276 | * | |
9277 | * At this point the magic return value is split between env->regs[15] | |
9278 | * and env->thumb. We don't bother to reconstitute it because we don't | |
9279 | * need it (all values are handled the same way). | |
9280 | */ | |
9281 | CPUARMState *env = &cpu->env; | |
9282 | uint32_t newpc, newpsr, newpsr_exc; | |
9283 | ||
9284 | qemu_log_mask(CPU_LOG_INT, "...really v7M secure function return\n"); | |
9285 | ||
9286 | { | |
9287 | bool threadmode, spsel; | |
9288 | TCGMemOpIdx oi; | |
9289 | ARMMMUIdx mmu_idx; | |
9290 | uint32_t *frame_sp_p; | |
9291 | uint32_t frameptr; | |
9292 | ||
9293 | /* Pull the return address and IPSR from the Secure stack */ | |
9294 | threadmode = !arm_v7m_is_handler_mode(env); | |
9295 | spsel = env->v7m.control[M_REG_S] & R_V7M_CONTROL_SPSEL_MASK; | |
9296 | ||
9297 | frame_sp_p = get_v7m_sp_ptr(env, true, threadmode, spsel); | |
9298 | frameptr = *frame_sp_p; | |
9299 | ||
9300 | /* These loads may throw an exception (for MPU faults). We want to | |
9301 | * do them as secure, so work out what MMU index that is. | |
9302 | */ | |
9303 | mmu_idx = arm_v7m_mmu_idx_for_secstate(env, true); | |
9304 | oi = make_memop_idx(MO_LE, arm_to_core_mmu_idx(mmu_idx)); | |
9305 | newpc = helper_le_ldul_mmu(env, frameptr, oi, 0); | |
9306 | newpsr = helper_le_ldul_mmu(env, frameptr + 4, oi, 0); | |
9307 | ||
9308 | /* Consistency checks on new IPSR */ | |
9309 | newpsr_exc = newpsr & XPSR_EXCP; | |
9310 | if (!((env->v7m.exception == 0 && newpsr_exc == 0) || | |
9311 | (env->v7m.exception == 1 && newpsr_exc != 0))) { | |
9312 | /* Pend the fault and tell our caller to take it */ | |
9313 | env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_INVPC_MASK; | |
9314 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, | |
9315 | env->v7m.secure); | |
9316 | qemu_log_mask(CPU_LOG_INT, | |
9317 | "...taking INVPC UsageFault: " | |
9318 | "IPSR consistency check failed\n"); | |
9319 | return false; | |
9320 | } | |
9321 | ||
9322 | *frame_sp_p = frameptr + 8; | |
9323 | } | |
9324 | ||
9325 | /* This invalidates frame_sp_p */ | |
9326 | switch_v7m_security_state(env, true); | |
9327 | env->v7m.exception = newpsr_exc; | |
9328 | env->v7m.control[M_REG_S] &= ~R_V7M_CONTROL_SFPA_MASK; | |
9329 | if (newpsr & XPSR_SFPA) { | |
9330 | env->v7m.control[M_REG_S] |= R_V7M_CONTROL_SFPA_MASK; | |
9331 | } | |
9332 | xpsr_write(env, 0, XPSR_IT); | |
9333 | env->thumb = newpc & 1; | |
9334 | env->regs[15] = newpc & ~1; | |
9335 | ||
9336 | qemu_log_mask(CPU_LOG_INT, "...function return successful\n"); | |
9337 | return true; | |
9338 | } | |
9339 | ||
27a7ea8a PB |
9340 | static void arm_log_exception(int idx) |
9341 | { | |
9342 | if (qemu_loglevel_mask(CPU_LOG_INT)) { | |
9343 | const char *exc = NULL; | |
2c4a7cc5 PM |
9344 | static const char * const excnames[] = { |
9345 | [EXCP_UDEF] = "Undefined Instruction", | |
9346 | [EXCP_SWI] = "SVC", | |
9347 | [EXCP_PREFETCH_ABORT] = "Prefetch Abort", | |
9348 | [EXCP_DATA_ABORT] = "Data Abort", | |
9349 | [EXCP_IRQ] = "IRQ", | |
9350 | [EXCP_FIQ] = "FIQ", | |
9351 | [EXCP_BKPT] = "Breakpoint", | |
9352 | [EXCP_EXCEPTION_EXIT] = "QEMU v7M exception exit", | |
9353 | [EXCP_KERNEL_TRAP] = "QEMU intercept of kernel commpage", | |
9354 | [EXCP_HVC] = "Hypervisor Call", | |
9355 | [EXCP_HYP_TRAP] = "Hypervisor Trap", | |
9356 | [EXCP_SMC] = "Secure Monitor Call", | |
9357 | [EXCP_VIRQ] = "Virtual IRQ", | |
9358 | [EXCP_VFIQ] = "Virtual FIQ", | |
9359 | [EXCP_SEMIHOST] = "Semihosting call", | |
9360 | [EXCP_NOCP] = "v7M NOCP UsageFault", | |
9361 | [EXCP_INVSTATE] = "v7M INVSTATE UsageFault", | |
86f026de | 9362 | [EXCP_STKOF] = "v8M STKOF UsageFault", |
e33cf0f8 | 9363 | [EXCP_LAZYFP] = "v7M exception during lazy FP stacking", |
019076b0 PM |
9364 | [EXCP_LSERR] = "v8M LSERR UsageFault", |
9365 | [EXCP_UNALIGNED] = "v7M UNALIGNED UsageFault", | |
2c4a7cc5 | 9366 | }; |
27a7ea8a PB |
9367 | |
9368 | if (idx >= 0 && idx < ARRAY_SIZE(excnames)) { | |
9369 | exc = excnames[idx]; | |
9370 | } | |
9371 | if (!exc) { | |
9372 | exc = "unknown"; | |
9373 | } | |
9374 | qemu_log_mask(CPU_LOG_INT, "Taking exception %d [%s]\n", idx, exc); | |
9375 | } | |
9376 | } | |
9377 | ||
333e10c5 PM |
9378 | static bool v7m_read_half_insn(ARMCPU *cpu, ARMMMUIdx mmu_idx, |
9379 | uint32_t addr, uint16_t *insn) | |
9380 | { | |
9381 | /* Load a 16-bit portion of a v7M instruction, returning true on success, | |
9382 | * or false on failure (in which case we will have pended the appropriate | |
9383 | * exception). | |
9384 | * We need to do the instruction fetch's MPU and SAU checks | |
9385 | * like this because there is no MMU index that would allow | |
9386 | * doing the load with a single function call. Instead we must | |
9387 | * first check that the security attributes permit the load | |
9388 | * and that they don't mismatch on the two halves of the instruction, | |
9389 | * and then we do the load as a secure load (ie using the security | |
9390 | * attributes of the address, not the CPU, as architecturally required). | |
9391 | */ | |
9392 | CPUState *cs = CPU(cpu); | |
9393 | CPUARMState *env = &cpu->env; | |
9394 | V8M_SAttributes sattrs = {}; | |
9395 | MemTxAttrs attrs = {}; | |
9396 | ARMMMUFaultInfo fi = {}; | |
9397 | MemTxResult txres; | |
9398 | target_ulong page_size; | |
9399 | hwaddr physaddr; | |
9400 | int prot; | |
333e10c5 PM |
9401 | |
9402 | v8m_security_lookup(env, addr, MMU_INST_FETCH, mmu_idx, &sattrs); | |
9403 | if (!sattrs.nsc || sattrs.ns) { | |
9404 | /* This must be the second half of the insn, and it straddles a | |
9405 | * region boundary with the second half not being S&NSC. | |
9406 | */ | |
9407 | env->v7m.sfsr |= R_V7M_SFSR_INVEP_MASK; | |
9408 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SECURE, false); | |
9409 | qemu_log_mask(CPU_LOG_INT, | |
9410 | "...really SecureFault with SFSR.INVEP\n"); | |
9411 | return false; | |
9412 | } | |
9413 | if (get_phys_addr(env, addr, MMU_INST_FETCH, mmu_idx, | |
bc52bfeb | 9414 | &physaddr, &attrs, &prot, &page_size, &fi, NULL)) { |
333e10c5 PM |
9415 | /* the MPU lookup failed */ |
9416 | env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_IACCVIOL_MASK; | |
9417 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_MEM, env->v7m.secure); | |
9418 | qemu_log_mask(CPU_LOG_INT, "...really MemManage with CFSR.IACCVIOL\n"); | |
9419 | return false; | |
9420 | } | |
9421 | *insn = address_space_lduw_le(arm_addressspace(cs, attrs), physaddr, | |
9422 | attrs, &txres); | |
9423 | if (txres != MEMTX_OK) { | |
9424 | env->v7m.cfsr[M_REG_NS] |= R_V7M_CFSR_IBUSERR_MASK; | |
9425 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_BUS, false); | |
9426 | qemu_log_mask(CPU_LOG_INT, "...really BusFault with CFSR.IBUSERR\n"); | |
9427 | return false; | |
9428 | } | |
9429 | return true; | |
9430 | } | |
9431 | ||
9432 | static bool v7m_handle_execute_nsc(ARMCPU *cpu) | |
9433 | { | |
9434 | /* Check whether this attempt to execute code in a Secure & NS-Callable | |
9435 | * memory region is for an SG instruction; if so, then emulate the | |
9436 | * effect of the SG instruction and return true. Otherwise pend | |
9437 | * the correct kind of exception and return false. | |
9438 | */ | |
9439 | CPUARMState *env = &cpu->env; | |
9440 | ARMMMUIdx mmu_idx; | |
9441 | uint16_t insn; | |
9442 | ||
9443 | /* We should never get here unless get_phys_addr_pmsav8() caused | |
9444 | * an exception for NS executing in S&NSC memory. | |
9445 | */ | |
9446 | assert(!env->v7m.secure); | |
9447 | assert(arm_feature(env, ARM_FEATURE_M_SECURITY)); | |
9448 | ||
9449 | /* We want to do the MPU lookup as secure; work out what mmu_idx that is */ | |
9450 | mmu_idx = arm_v7m_mmu_idx_for_secstate(env, true); | |
9451 | ||
9452 | if (!v7m_read_half_insn(cpu, mmu_idx, env->regs[15], &insn)) { | |
9453 | return false; | |
9454 | } | |
9455 | ||
9456 | if (!env->thumb) { | |
9457 | goto gen_invep; | |
9458 | } | |
9459 | ||
9460 | if (insn != 0xe97f) { | |
9461 | /* Not an SG instruction first half (we choose the IMPDEF | |
9462 | * early-SG-check option). | |
9463 | */ | |
9464 | goto gen_invep; | |
9465 | } | |
9466 | ||
9467 | if (!v7m_read_half_insn(cpu, mmu_idx, env->regs[15] + 2, &insn)) { | |
9468 | return false; | |
9469 | } | |
9470 | ||
9471 | if (insn != 0xe97f) { | |
9472 | /* Not an SG instruction second half (yes, both halves of the SG | |
9473 | * insn have the same hex value) | |
9474 | */ | |
9475 | goto gen_invep; | |
9476 | } | |
9477 | ||
9478 | /* OK, we have confirmed that we really have an SG instruction. | |
9479 | * We know we're NS in S memory so don't need to repeat those checks. | |
9480 | */ | |
9481 | qemu_log_mask(CPU_LOG_INT, "...really an SG instruction at 0x%08" PRIx32 | |
9482 | ", executing it\n", env->regs[15]); | |
9483 | env->regs[14] &= ~1; | |
17020713 | 9484 | env->v7m.control[M_REG_S] &= ~R_V7M_CONTROL_SFPA_MASK; |
333e10c5 PM |
9485 | switch_v7m_security_state(env, true); |
9486 | xpsr_write(env, 0, XPSR_IT); | |
9487 | env->regs[15] += 4; | |
9488 | return true; | |
9489 | ||
9490 | gen_invep: | |
9491 | env->v7m.sfsr |= R_V7M_SFSR_INVEP_MASK; | |
9492 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SECURE, false); | |
9493 | qemu_log_mask(CPU_LOG_INT, | |
9494 | "...really SecureFault with SFSR.INVEP\n"); | |
9495 | return false; | |
9496 | } | |
9497 | ||
e6f010cc | 9498 | void arm_v7m_cpu_do_interrupt(CPUState *cs) |
9ee6e8bb | 9499 | { |
e6f010cc AF |
9500 | ARMCPU *cpu = ARM_CPU(cs); |
9501 | CPUARMState *env = &cpu->env; | |
9ee6e8bb | 9502 | uint32_t lr; |
0094ca70 | 9503 | bool ignore_stackfaults; |
9ee6e8bb | 9504 | |
27103424 | 9505 | arm_log_exception(cs->exception_index); |
3f1beaca | 9506 | |
9ee6e8bb PB |
9507 | /* For exceptions we just mark as pending on the NVIC, and let that |
9508 | handle it. */ | |
27103424 | 9509 | switch (cs->exception_index) { |
9ee6e8bb | 9510 | case EXCP_UDEF: |
2fb50a33 | 9511 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, env->v7m.secure); |
334e8dad | 9512 | env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_UNDEFINSTR_MASK; |
a25dc805 | 9513 | break; |
7517748e | 9514 | case EXCP_NOCP: |
d87513c0 PM |
9515 | { |
9516 | /* | |
9517 | * NOCP might be directed to something other than the current | |
9518 | * security state if this fault is because of NSACR; we indicate | |
9519 | * the target security state using exception.target_el. | |
9520 | */ | |
9521 | int target_secstate; | |
9522 | ||
9523 | if (env->exception.target_el == 3) { | |
9524 | target_secstate = M_REG_S; | |
9525 | } else { | |
9526 | target_secstate = env->v7m.secure; | |
9527 | } | |
9528 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, target_secstate); | |
9529 | env->v7m.cfsr[target_secstate] |= R_V7M_CFSR_NOCP_MASK; | |
a25dc805 | 9530 | break; |
d87513c0 | 9531 | } |
e13886e3 | 9532 | case EXCP_INVSTATE: |
2fb50a33 | 9533 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, env->v7m.secure); |
334e8dad | 9534 | env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_INVSTATE_MASK; |
e13886e3 | 9535 | break; |
86f026de PM |
9536 | case EXCP_STKOF: |
9537 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, env->v7m.secure); | |
9538 | env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_STKOF_MASK; | |
9539 | break; | |
019076b0 PM |
9540 | case EXCP_LSERR: |
9541 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SECURE, false); | |
9542 | env->v7m.sfsr |= R_V7M_SFSR_LSERR_MASK; | |
9543 | break; | |
9544 | case EXCP_UNALIGNED: | |
9545 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, env->v7m.secure); | |
9546 | env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_UNALIGNED_MASK; | |
9547 | break; | |
9ee6e8bb | 9548 | case EXCP_SWI: |
314e2296 | 9549 | /* The PC already points to the next instruction. */ |
2fb50a33 | 9550 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SVC, env->v7m.secure); |
a25dc805 | 9551 | break; |
9ee6e8bb PB |
9552 | case EXCP_PREFETCH_ABORT: |
9553 | case EXCP_DATA_ABORT: | |
5dd0641d MD |
9554 | /* Note that for M profile we don't have a guest facing FSR, but |
9555 | * the env->exception.fsr will be populated by the code that | |
9556 | * raises the fault, in the A profile short-descriptor format. | |
abf1172f | 9557 | */ |
5dd0641d | 9558 | switch (env->exception.fsr & 0xf) { |
35337cc3 PM |
9559 | case M_FAKE_FSR_NSC_EXEC: |
9560 | /* Exception generated when we try to execute code at an address | |
9561 | * which is marked as Secure & Non-Secure Callable and the CPU | |
9562 | * is in the Non-Secure state. The only instruction which can | |
9563 | * be executed like this is SG (and that only if both halves of | |
9564 | * the SG instruction have the same security attributes.) | |
9565 | * Everything else must generate an INVEP SecureFault, so we | |
9566 | * emulate the SG instruction here. | |
35337cc3 | 9567 | */ |
333e10c5 PM |
9568 | if (v7m_handle_execute_nsc(cpu)) { |
9569 | return; | |
9570 | } | |
35337cc3 PM |
9571 | break; |
9572 | case M_FAKE_FSR_SFAULT: | |
9573 | /* Various flavours of SecureFault for attempts to execute or | |
9574 | * access data in the wrong security state. | |
9575 | */ | |
9576 | switch (cs->exception_index) { | |
9577 | case EXCP_PREFETCH_ABORT: | |
9578 | if (env->v7m.secure) { | |
9579 | env->v7m.sfsr |= R_V7M_SFSR_INVTRAN_MASK; | |
9580 | qemu_log_mask(CPU_LOG_INT, | |
9581 | "...really SecureFault with SFSR.INVTRAN\n"); | |
9582 | } else { | |
9583 | env->v7m.sfsr |= R_V7M_SFSR_INVEP_MASK; | |
9584 | qemu_log_mask(CPU_LOG_INT, | |
9585 | "...really SecureFault with SFSR.INVEP\n"); | |
9586 | } | |
9587 | break; | |
9588 | case EXCP_DATA_ABORT: | |
9589 | /* This must be an NS access to S memory */ | |
9590 | env->v7m.sfsr |= R_V7M_SFSR_AUVIOL_MASK; | |
9591 | qemu_log_mask(CPU_LOG_INT, | |
9592 | "...really SecureFault with SFSR.AUVIOL\n"); | |
9593 | break; | |
9594 | } | |
9595 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SECURE, false); | |
9596 | break; | |
5dd0641d MD |
9597 | case 0x8: /* External Abort */ |
9598 | switch (cs->exception_index) { | |
9599 | case EXCP_PREFETCH_ABORT: | |
c6158878 PM |
9600 | env->v7m.cfsr[M_REG_NS] |= R_V7M_CFSR_IBUSERR_MASK; |
9601 | qemu_log_mask(CPU_LOG_INT, "...with CFSR.IBUSERR\n"); | |
5dd0641d MD |
9602 | break; |
9603 | case EXCP_DATA_ABORT: | |
334e8dad | 9604 | env->v7m.cfsr[M_REG_NS] |= |
c6158878 | 9605 | (R_V7M_CFSR_PRECISERR_MASK | R_V7M_CFSR_BFARVALID_MASK); |
5dd0641d MD |
9606 | env->v7m.bfar = env->exception.vaddress; |
9607 | qemu_log_mask(CPU_LOG_INT, | |
c6158878 | 9608 | "...with CFSR.PRECISERR and BFAR 0x%x\n", |
5dd0641d MD |
9609 | env->v7m.bfar); |
9610 | break; | |
9611 | } | |
2fb50a33 | 9612 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_BUS, false); |
5dd0641d MD |
9613 | break; |
9614 | default: | |
9615 | /* All other FSR values are either MPU faults or "can't happen | |
9616 | * for M profile" cases. | |
9617 | */ | |
9618 | switch (cs->exception_index) { | |
9619 | case EXCP_PREFETCH_ABORT: | |
334e8dad | 9620 | env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_IACCVIOL_MASK; |
5dd0641d MD |
9621 | qemu_log_mask(CPU_LOG_INT, "...with CFSR.IACCVIOL\n"); |
9622 | break; | |
9623 | case EXCP_DATA_ABORT: | |
334e8dad | 9624 | env->v7m.cfsr[env->v7m.secure] |= |
5dd0641d | 9625 | (R_V7M_CFSR_DACCVIOL_MASK | R_V7M_CFSR_MMARVALID_MASK); |
c51a5cfc | 9626 | env->v7m.mmfar[env->v7m.secure] = env->exception.vaddress; |
5dd0641d MD |
9627 | qemu_log_mask(CPU_LOG_INT, |
9628 | "...with CFSR.DACCVIOL and MMFAR 0x%x\n", | |
c51a5cfc | 9629 | env->v7m.mmfar[env->v7m.secure]); |
5dd0641d MD |
9630 | break; |
9631 | } | |
2fb50a33 PM |
9632 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_MEM, |
9633 | env->v7m.secure); | |
5dd0641d MD |
9634 | break; |
9635 | } | |
a25dc805 | 9636 | break; |
9ee6e8bb | 9637 | case EXCP_BKPT: |
cfe67cef | 9638 | if (semihosting_enabled()) { |
2ad207d4 | 9639 | int nr; |
f9fd40eb | 9640 | nr = arm_lduw_code(env, env->regs[15], arm_sctlr_b(env)) & 0xff; |
2ad207d4 PB |
9641 | if (nr == 0xab) { |
9642 | env->regs[15] += 2; | |
205ace55 CC |
9643 | qemu_log_mask(CPU_LOG_INT, |
9644 | "...handling as semihosting call 0x%x\n", | |
9645 | env->regs[0]); | |
2ad207d4 PB |
9646 | env->regs[0] = do_arm_semihosting(env); |
9647 | return; | |
9648 | } | |
9649 | } | |
2fb50a33 | 9650 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_DEBUG, false); |
a25dc805 | 9651 | break; |
9ee6e8bb | 9652 | case EXCP_IRQ: |
9ee6e8bb PB |
9653 | break; |
9654 | case EXCP_EXCEPTION_EXIT: | |
d02a8698 PM |
9655 | if (env->regs[15] < EXC_RETURN_MIN_MAGIC) { |
9656 | /* Must be v8M security extension function return */ | |
9657 | assert(env->regs[15] >= FNC_RETURN_MIN_MAGIC); | |
9658 | assert(arm_feature(env, ARM_FEATURE_M_SECURITY)); | |
9659 | if (do_v7m_function_return(cpu)) { | |
9660 | return; | |
9661 | } | |
9662 | } else { | |
9663 | do_v7m_exception_exit(cpu); | |
9664 | return; | |
9665 | } | |
9666 | break; | |
e33cf0f8 PM |
9667 | case EXCP_LAZYFP: |
9668 | /* | |
9669 | * We already pended the specific exception in the NVIC in the | |
9670 | * v7m_preserve_fp_state() helper function. | |
9671 | */ | |
9672 | break; | |
9ee6e8bb | 9673 | default: |
a47dddd7 | 9674 | cpu_abort(cs, "Unhandled exception 0x%x\n", cs->exception_index); |
9ee6e8bb PB |
9675 | return; /* Never happens. Keep compiler happy. */ |
9676 | } | |
9677 | ||
d3392718 PM |
9678 | if (arm_feature(env, ARM_FEATURE_V8)) { |
9679 | lr = R_V7M_EXCRET_RES1_MASK | | |
0ed377a8 | 9680 | R_V7M_EXCRET_DCRS_MASK; |
d3392718 PM |
9681 | /* The S bit indicates whether we should return to Secure |
9682 | * or NonSecure (ie our current state). | |
9683 | * The ES bit indicates whether we're taking this exception | |
9684 | * to Secure or NonSecure (ie our target state). We set it | |
9685 | * later, in v7m_exception_taken(). | |
9686 | * The SPSEL bit is also set in v7m_exception_taken() for v8M. | |
9687 | * This corresponds to the ARM ARM pseudocode for v8M setting | |
9688 | * some LR bits in PushStack() and some in ExceptionTaken(); | |
9689 | * the distinction matters for the tailchain cases where we | |
9690 | * can take an exception without pushing the stack. | |
9691 | */ | |
9692 | if (env->v7m.secure) { | |
9693 | lr |= R_V7M_EXCRET_S_MASK; | |
9694 | } | |
0ed377a8 PM |
9695 | if (!(env->v7m.control[M_REG_S] & R_V7M_CONTROL_FPCA_MASK)) { |
9696 | lr |= R_V7M_EXCRET_FTYPE_MASK; | |
9697 | } | |
d3392718 PM |
9698 | } else { |
9699 | lr = R_V7M_EXCRET_RES1_MASK | | |
9700 | R_V7M_EXCRET_S_MASK | | |
9701 | R_V7M_EXCRET_DCRS_MASK | | |
9702 | R_V7M_EXCRET_FTYPE_MASK | | |
9703 | R_V7M_EXCRET_ES_MASK; | |
9704 | if (env->v7m.control[M_REG_NS] & R_V7M_CONTROL_SPSEL_MASK) { | |
9705 | lr |= R_V7M_EXCRET_SPSEL_MASK; | |
9706 | } | |
bd70b29b | 9707 | } |
15b3f556 | 9708 | if (!arm_v7m_is_handler_mode(env)) { |
4d1e7a47 | 9709 | lr |= R_V7M_EXCRET_MODE_MASK; |
bd70b29b PM |
9710 | } |
9711 | ||
0094ca70 PM |
9712 | ignore_stackfaults = v7m_push_stack(cpu); |
9713 | v7m_exception_taken(cpu, lr, false, ignore_stackfaults); | |
9ee6e8bb PB |
9714 | } |
9715 | ||
ce02049d GB |
9716 | /* Function used to synchronize QEMU's AArch64 register set with AArch32 |
9717 | * register set. This is necessary when switching between AArch32 and AArch64 | |
9718 | * execution state. | |
9719 | */ | |
9720 | void aarch64_sync_32_to_64(CPUARMState *env) | |
9721 | { | |
9722 | int i; | |
9723 | uint32_t mode = env->uncached_cpsr & CPSR_M; | |
9724 | ||
9725 | /* We can blanket copy R[0:7] to X[0:7] */ | |
9726 | for (i = 0; i < 8; i++) { | |
9727 | env->xregs[i] = env->regs[i]; | |
9728 | } | |
9729 | ||
9730 | /* Unless we are in FIQ mode, x8-x12 come from the user registers r8-r12. | |
9731 | * Otherwise, they come from the banked user regs. | |
9732 | */ | |
9733 | if (mode == ARM_CPU_MODE_FIQ) { | |
9734 | for (i = 8; i < 13; i++) { | |
9735 | env->xregs[i] = env->usr_regs[i - 8]; | |
9736 | } | |
9737 | } else { | |
9738 | for (i = 8; i < 13; i++) { | |
9739 | env->xregs[i] = env->regs[i]; | |
9740 | } | |
9741 | } | |
9742 | ||
9743 | /* Registers x13-x23 are the various mode SP and FP registers. Registers | |
9744 | * r13 and r14 are only copied if we are in that mode, otherwise we copy | |
9745 | * from the mode banked register. | |
9746 | */ | |
9747 | if (mode == ARM_CPU_MODE_USR || mode == ARM_CPU_MODE_SYS) { | |
9748 | env->xregs[13] = env->regs[13]; | |
9749 | env->xregs[14] = env->regs[14]; | |
9750 | } else { | |
9751 | env->xregs[13] = env->banked_r13[bank_number(ARM_CPU_MODE_USR)]; | |
9752 | /* HYP is an exception in that it is copied from r14 */ | |
9753 | if (mode == ARM_CPU_MODE_HYP) { | |
9754 | env->xregs[14] = env->regs[14]; | |
9755 | } else { | |
593cfa2b | 9756 | env->xregs[14] = env->banked_r14[r14_bank_number(ARM_CPU_MODE_USR)]; |
ce02049d GB |
9757 | } |
9758 | } | |
9759 | ||
9760 | if (mode == ARM_CPU_MODE_HYP) { | |
9761 | env->xregs[15] = env->regs[13]; | |
9762 | } else { | |
9763 | env->xregs[15] = env->banked_r13[bank_number(ARM_CPU_MODE_HYP)]; | |
9764 | } | |
9765 | ||
9766 | if (mode == ARM_CPU_MODE_IRQ) { | |
3a9148d0 SS |
9767 | env->xregs[16] = env->regs[14]; |
9768 | env->xregs[17] = env->regs[13]; | |
ce02049d | 9769 | } else { |
593cfa2b | 9770 | env->xregs[16] = env->banked_r14[r14_bank_number(ARM_CPU_MODE_IRQ)]; |
3a9148d0 | 9771 | env->xregs[17] = env->banked_r13[bank_number(ARM_CPU_MODE_IRQ)]; |
ce02049d GB |
9772 | } |
9773 | ||
9774 | if (mode == ARM_CPU_MODE_SVC) { | |
3a9148d0 SS |
9775 | env->xregs[18] = env->regs[14]; |
9776 | env->xregs[19] = env->regs[13]; | |
ce02049d | 9777 | } else { |
593cfa2b | 9778 | env->xregs[18] = env->banked_r14[r14_bank_number(ARM_CPU_MODE_SVC)]; |
3a9148d0 | 9779 | env->xregs[19] = env->banked_r13[bank_number(ARM_CPU_MODE_SVC)]; |
ce02049d GB |
9780 | } |
9781 | ||
9782 | if (mode == ARM_CPU_MODE_ABT) { | |
3a9148d0 SS |
9783 | env->xregs[20] = env->regs[14]; |
9784 | env->xregs[21] = env->regs[13]; | |
ce02049d | 9785 | } else { |
593cfa2b | 9786 | env->xregs[20] = env->banked_r14[r14_bank_number(ARM_CPU_MODE_ABT)]; |
3a9148d0 | 9787 | env->xregs[21] = env->banked_r13[bank_number(ARM_CPU_MODE_ABT)]; |
ce02049d GB |
9788 | } |
9789 | ||
9790 | if (mode == ARM_CPU_MODE_UND) { | |
3a9148d0 SS |
9791 | env->xregs[22] = env->regs[14]; |
9792 | env->xregs[23] = env->regs[13]; | |
ce02049d | 9793 | } else { |
593cfa2b | 9794 | env->xregs[22] = env->banked_r14[r14_bank_number(ARM_CPU_MODE_UND)]; |
3a9148d0 | 9795 | env->xregs[23] = env->banked_r13[bank_number(ARM_CPU_MODE_UND)]; |
ce02049d GB |
9796 | } |
9797 | ||
9798 | /* Registers x24-x30 are mapped to r8-r14 in FIQ mode. If we are in FIQ | |
9799 | * mode, then we can copy from r8-r14. Otherwise, we copy from the | |
9800 | * FIQ bank for r8-r14. | |
9801 | */ | |
9802 | if (mode == ARM_CPU_MODE_FIQ) { | |
9803 | for (i = 24; i < 31; i++) { | |
9804 | env->xregs[i] = env->regs[i - 16]; /* X[24:30] <- R[8:14] */ | |
9805 | } | |
9806 | } else { | |
9807 | for (i = 24; i < 29; i++) { | |
9808 | env->xregs[i] = env->fiq_regs[i - 24]; | |
9809 | } | |
9810 | env->xregs[29] = env->banked_r13[bank_number(ARM_CPU_MODE_FIQ)]; | |
593cfa2b | 9811 | env->xregs[30] = env->banked_r14[r14_bank_number(ARM_CPU_MODE_FIQ)]; |
ce02049d GB |
9812 | } |
9813 | ||
9814 | env->pc = env->regs[15]; | |
9815 | } | |
9816 | ||
9817 | /* Function used to synchronize QEMU's AArch32 register set with AArch64 | |
9818 | * register set. This is necessary when switching between AArch32 and AArch64 | |
9819 | * execution state. | |
9820 | */ | |
9821 | void aarch64_sync_64_to_32(CPUARMState *env) | |
9822 | { | |
9823 | int i; | |
9824 | uint32_t mode = env->uncached_cpsr & CPSR_M; | |
9825 | ||
9826 | /* We can blanket copy X[0:7] to R[0:7] */ | |
9827 | for (i = 0; i < 8; i++) { | |
9828 | env->regs[i] = env->xregs[i]; | |
9829 | } | |
9830 | ||
9831 | /* Unless we are in FIQ mode, r8-r12 come from the user registers x8-x12. | |
9832 | * Otherwise, we copy x8-x12 into the banked user regs. | |
9833 | */ | |
9834 | if (mode == ARM_CPU_MODE_FIQ) { | |
9835 | for (i = 8; i < 13; i++) { | |
9836 | env->usr_regs[i - 8] = env->xregs[i]; | |
9837 | } | |
9838 | } else { | |
9839 | for (i = 8; i < 13; i++) { | |
9840 | env->regs[i] = env->xregs[i]; | |
9841 | } | |
9842 | } | |
9843 | ||
9844 | /* Registers r13 & r14 depend on the current mode. | |
9845 | * If we are in a given mode, we copy the corresponding x registers to r13 | |
9846 | * and r14. Otherwise, we copy the x register to the banked r13 and r14 | |
9847 | * for the mode. | |
9848 | */ | |
9849 | if (mode == ARM_CPU_MODE_USR || mode == ARM_CPU_MODE_SYS) { | |
9850 | env->regs[13] = env->xregs[13]; | |
9851 | env->regs[14] = env->xregs[14]; | |
9852 | } else { | |
9853 | env->banked_r13[bank_number(ARM_CPU_MODE_USR)] = env->xregs[13]; | |
9854 | ||
9855 | /* HYP is an exception in that it does not have its own banked r14 but | |
9856 | * shares the USR r14 | |
9857 | */ | |
9858 | if (mode == ARM_CPU_MODE_HYP) { | |
9859 | env->regs[14] = env->xregs[14]; | |
9860 | } else { | |
593cfa2b | 9861 | env->banked_r14[r14_bank_number(ARM_CPU_MODE_USR)] = env->xregs[14]; |
ce02049d GB |
9862 | } |
9863 | } | |
9864 | ||
9865 | if (mode == ARM_CPU_MODE_HYP) { | |
9866 | env->regs[13] = env->xregs[15]; | |
9867 | } else { | |
9868 | env->banked_r13[bank_number(ARM_CPU_MODE_HYP)] = env->xregs[15]; | |
9869 | } | |
9870 | ||
9871 | if (mode == ARM_CPU_MODE_IRQ) { | |
3a9148d0 SS |
9872 | env->regs[14] = env->xregs[16]; |
9873 | env->regs[13] = env->xregs[17]; | |
ce02049d | 9874 | } else { |
593cfa2b | 9875 | env->banked_r14[r14_bank_number(ARM_CPU_MODE_IRQ)] = env->xregs[16]; |
3a9148d0 | 9876 | env->banked_r13[bank_number(ARM_CPU_MODE_IRQ)] = env->xregs[17]; |
ce02049d GB |
9877 | } |
9878 | ||
9879 | if (mode == ARM_CPU_MODE_SVC) { | |
3a9148d0 SS |
9880 | env->regs[14] = env->xregs[18]; |
9881 | env->regs[13] = env->xregs[19]; | |
ce02049d | 9882 | } else { |
593cfa2b | 9883 | env->banked_r14[r14_bank_number(ARM_CPU_MODE_SVC)] = env->xregs[18]; |
3a9148d0 | 9884 | env->banked_r13[bank_number(ARM_CPU_MODE_SVC)] = env->xregs[19]; |
ce02049d GB |
9885 | } |
9886 | ||
9887 | if (mode == ARM_CPU_MODE_ABT) { | |
3a9148d0 SS |
9888 | env->regs[14] = env->xregs[20]; |
9889 | env->regs[13] = env->xregs[21]; | |
ce02049d | 9890 | } else { |
593cfa2b | 9891 | env->banked_r14[r14_bank_number(ARM_CPU_MODE_ABT)] = env->xregs[20]; |
3a9148d0 | 9892 | env->banked_r13[bank_number(ARM_CPU_MODE_ABT)] = env->xregs[21]; |
ce02049d GB |
9893 | } |
9894 | ||
9895 | if (mode == ARM_CPU_MODE_UND) { | |
3a9148d0 SS |
9896 | env->regs[14] = env->xregs[22]; |
9897 | env->regs[13] = env->xregs[23]; | |
ce02049d | 9898 | } else { |
593cfa2b | 9899 | env->banked_r14[r14_bank_number(ARM_CPU_MODE_UND)] = env->xregs[22]; |
3a9148d0 | 9900 | env->banked_r13[bank_number(ARM_CPU_MODE_UND)] = env->xregs[23]; |
ce02049d GB |
9901 | } |
9902 | ||
9903 | /* Registers x24-x30 are mapped to r8-r14 in FIQ mode. If we are in FIQ | |
9904 | * mode, then we can copy to r8-r14. Otherwise, we copy to the | |
9905 | * FIQ bank for r8-r14. | |
9906 | */ | |
9907 | if (mode == ARM_CPU_MODE_FIQ) { | |
9908 | for (i = 24; i < 31; i++) { | |
9909 | env->regs[i - 16] = env->xregs[i]; /* X[24:30] -> R[8:14] */ | |
9910 | } | |
9911 | } else { | |
9912 | for (i = 24; i < 29; i++) { | |
9913 | env->fiq_regs[i - 24] = env->xregs[i]; | |
9914 | } | |
9915 | env->banked_r13[bank_number(ARM_CPU_MODE_FIQ)] = env->xregs[29]; | |
593cfa2b | 9916 | env->banked_r14[r14_bank_number(ARM_CPU_MODE_FIQ)] = env->xregs[30]; |
ce02049d GB |
9917 | } |
9918 | ||
9919 | env->regs[15] = env->pc; | |
9920 | } | |
9921 | ||
dea8378b PM |
9922 | static void take_aarch32_exception(CPUARMState *env, int new_mode, |
9923 | uint32_t mask, uint32_t offset, | |
9924 | uint32_t newpc) | |
9925 | { | |
9926 | /* Change the CPU state so as to actually take the exception. */ | |
9927 | switch_mode(env, new_mode); | |
9928 | /* | |
9929 | * For exceptions taken to AArch32 we must clear the SS bit in both | |
9930 | * PSTATE and in the old-state value we save to SPSR_<mode>, so zero it now. | |
9931 | */ | |
9932 | env->uncached_cpsr &= ~PSTATE_SS; | |
9933 | env->spsr = cpsr_read(env); | |
9934 | /* Clear IT bits. */ | |
9935 | env->condexec_bits = 0; | |
9936 | /* Switch to the new mode, and to the correct instruction set. */ | |
9937 | env->uncached_cpsr = (env->uncached_cpsr & ~CPSR_M) | new_mode; | |
9938 | /* Set new mode endianness */ | |
9939 | env->uncached_cpsr &= ~CPSR_E; | |
9940 | if (env->cp15.sctlr_el[arm_current_el(env)] & SCTLR_EE) { | |
9941 | env->uncached_cpsr |= CPSR_E; | |
9942 | } | |
829f9fd3 PM |
9943 | /* J and IL must always be cleared for exception entry */ |
9944 | env->uncached_cpsr &= ~(CPSR_IL | CPSR_J); | |
dea8378b PM |
9945 | env->daif |= mask; |
9946 | ||
9947 | if (new_mode == ARM_CPU_MODE_HYP) { | |
9948 | env->thumb = (env->cp15.sctlr_el[2] & SCTLR_TE) != 0; | |
9949 | env->elr_el[2] = env->regs[15]; | |
9950 | } else { | |
9951 | /* | |
9952 | * this is a lie, as there was no c1_sys on V4T/V5, but who cares | |
9953 | * and we should just guard the thumb mode on V4 | |
9954 | */ | |
9955 | if (arm_feature(env, ARM_FEATURE_V4T)) { | |
9956 | env->thumb = | |
9957 | (A32_BANKED_CURRENT_REG_GET(env, sctlr) & SCTLR_TE) != 0; | |
9958 | } | |
9959 | env->regs[14] = env->regs[15] + offset; | |
9960 | } | |
9961 | env->regs[15] = newpc; | |
9962 | } | |
9963 | ||
b9bc21ff PM |
9964 | static void arm_cpu_do_interrupt_aarch32_hyp(CPUState *cs) |
9965 | { | |
9966 | /* | |
9967 | * Handle exception entry to Hyp mode; this is sufficiently | |
9968 | * different to entry to other AArch32 modes that we handle it | |
9969 | * separately here. | |
9970 | * | |
9971 | * The vector table entry used is always the 0x14 Hyp mode entry point, | |
9972 | * unless this is an UNDEF/HVC/abort taken from Hyp to Hyp. | |
9973 | * The offset applied to the preferred return address is always zero | |
9974 | * (see DDI0487C.a section G1.12.3). | |
9975 | * PSTATE A/I/F masks are set based only on the SCR.EA/IRQ/FIQ values. | |
9976 | */ | |
9977 | uint32_t addr, mask; | |
9978 | ARMCPU *cpu = ARM_CPU(cs); | |
9979 | CPUARMState *env = &cpu->env; | |
9980 | ||
9981 | switch (cs->exception_index) { | |
9982 | case EXCP_UDEF: | |
9983 | addr = 0x04; | |
9984 | break; | |
9985 | case EXCP_SWI: | |
9986 | addr = 0x14; | |
9987 | break; | |
9988 | case EXCP_BKPT: | |
9989 | /* Fall through to prefetch abort. */ | |
9990 | case EXCP_PREFETCH_ABORT: | |
9991 | env->cp15.ifar_s = env->exception.vaddress; | |
9992 | qemu_log_mask(CPU_LOG_INT, "...with HIFAR 0x%x\n", | |
9993 | (uint32_t)env->exception.vaddress); | |
9994 | addr = 0x0c; | |
9995 | break; | |
9996 | case EXCP_DATA_ABORT: | |
9997 | env->cp15.dfar_s = env->exception.vaddress; | |
9998 | qemu_log_mask(CPU_LOG_INT, "...with HDFAR 0x%x\n", | |
9999 | (uint32_t)env->exception.vaddress); | |
10000 | addr = 0x10; | |
10001 | break; | |
10002 | case EXCP_IRQ: | |
10003 | addr = 0x18; | |
10004 | break; | |
10005 | case EXCP_FIQ: | |
10006 | addr = 0x1c; | |
10007 | break; | |
10008 | case EXCP_HVC: | |
10009 | addr = 0x08; | |
10010 | break; | |
10011 | case EXCP_HYP_TRAP: | |
10012 | addr = 0x14; | |
10013 | default: | |
10014 | cpu_abort(cs, "Unhandled exception 0x%x\n", cs->exception_index); | |
10015 | } | |
10016 | ||
10017 | if (cs->exception_index != EXCP_IRQ && cs->exception_index != EXCP_FIQ) { | |
2ed08180 PM |
10018 | if (!arm_feature(env, ARM_FEATURE_V8)) { |
10019 | /* | |
10020 | * QEMU syndrome values are v8-style. v7 has the IL bit | |
10021 | * UNK/SBZP for "field not valid" cases, where v8 uses RES1. | |
10022 | * If this is a v7 CPU, squash the IL bit in those cases. | |
10023 | */ | |
10024 | if (cs->exception_index == EXCP_PREFETCH_ABORT || | |
10025 | (cs->exception_index == EXCP_DATA_ABORT && | |
10026 | !(env->exception.syndrome & ARM_EL_ISV)) || | |
10027 | syn_get_ec(env->exception.syndrome) == EC_UNCATEGORIZED) { | |
10028 | env->exception.syndrome &= ~ARM_EL_IL; | |
10029 | } | |
10030 | } | |
b9bc21ff PM |
10031 | env->cp15.esr_el[2] = env->exception.syndrome; |
10032 | } | |
10033 | ||
10034 | if (arm_current_el(env) != 2 && addr < 0x14) { | |
10035 | addr = 0x14; | |
10036 | } | |
10037 | ||
10038 | mask = 0; | |
10039 | if (!(env->cp15.scr_el3 & SCR_EA)) { | |
10040 | mask |= CPSR_A; | |
10041 | } | |
10042 | if (!(env->cp15.scr_el3 & SCR_IRQ)) { | |
10043 | mask |= CPSR_I; | |
10044 | } | |
10045 | if (!(env->cp15.scr_el3 & SCR_FIQ)) { | |
10046 | mask |= CPSR_F; | |
10047 | } | |
10048 | ||
10049 | addr += env->cp15.hvbar; | |
10050 | ||
10051 | take_aarch32_exception(env, ARM_CPU_MODE_HYP, mask, 0, addr); | |
10052 | } | |
10053 | ||
966f758c | 10054 | static void arm_cpu_do_interrupt_aarch32(CPUState *cs) |
b5ff1b31 | 10055 | { |
97a8ea5a AF |
10056 | ARMCPU *cpu = ARM_CPU(cs); |
10057 | CPUARMState *env = &cpu->env; | |
b5ff1b31 FB |
10058 | uint32_t addr; |
10059 | uint32_t mask; | |
10060 | int new_mode; | |
10061 | uint32_t offset; | |
16a906fd | 10062 | uint32_t moe; |
b5ff1b31 | 10063 | |
16a906fd | 10064 | /* If this is a debug exception we must update the DBGDSCR.MOE bits */ |
64b91e3f | 10065 | switch (syn_get_ec(env->exception.syndrome)) { |
16a906fd PM |
10066 | case EC_BREAKPOINT: |
10067 | case EC_BREAKPOINT_SAME_EL: | |
10068 | moe = 1; | |
10069 | break; | |
10070 | case EC_WATCHPOINT: | |
10071 | case EC_WATCHPOINT_SAME_EL: | |
10072 | moe = 10; | |
10073 | break; | |
10074 | case EC_AA32_BKPT: | |
10075 | moe = 3; | |
10076 | break; | |
10077 | case EC_VECTORCATCH: | |
10078 | moe = 5; | |
10079 | break; | |
10080 | default: | |
10081 | moe = 0; | |
10082 | break; | |
10083 | } | |
10084 | ||
10085 | if (moe) { | |
10086 | env->cp15.mdscr_el1 = deposit64(env->cp15.mdscr_el1, 2, 4, moe); | |
10087 | } | |
10088 | ||
b9bc21ff PM |
10089 | if (env->exception.target_el == 2) { |
10090 | arm_cpu_do_interrupt_aarch32_hyp(cs); | |
10091 | return; | |
10092 | } | |
10093 | ||
27103424 | 10094 | switch (cs->exception_index) { |
b5ff1b31 FB |
10095 | case EXCP_UDEF: |
10096 | new_mode = ARM_CPU_MODE_UND; | |
10097 | addr = 0x04; | |
10098 | mask = CPSR_I; | |
10099 | if (env->thumb) | |
10100 | offset = 2; | |
10101 | else | |
10102 | offset = 4; | |
10103 | break; | |
10104 | case EXCP_SWI: | |
10105 | new_mode = ARM_CPU_MODE_SVC; | |
10106 | addr = 0x08; | |
10107 | mask = CPSR_I; | |
601d70b9 | 10108 | /* The PC already points to the next instruction. */ |
b5ff1b31 FB |
10109 | offset = 0; |
10110 | break; | |
06c949e6 | 10111 | case EXCP_BKPT: |
9ee6e8bb PB |
10112 | /* Fall through to prefetch abort. */ |
10113 | case EXCP_PREFETCH_ABORT: | |
88ca1c2d | 10114 | A32_BANKED_CURRENT_REG_SET(env, ifsr, env->exception.fsr); |
b848ce2b | 10115 | A32_BANKED_CURRENT_REG_SET(env, ifar, env->exception.vaddress); |
3f1beaca | 10116 | qemu_log_mask(CPU_LOG_INT, "...with IFSR 0x%x IFAR 0x%x\n", |
88ca1c2d | 10117 | env->exception.fsr, (uint32_t)env->exception.vaddress); |
b5ff1b31 FB |
10118 | new_mode = ARM_CPU_MODE_ABT; |
10119 | addr = 0x0c; | |
10120 | mask = CPSR_A | CPSR_I; | |
10121 | offset = 4; | |
10122 | break; | |
10123 | case EXCP_DATA_ABORT: | |
4a7e2d73 | 10124 | A32_BANKED_CURRENT_REG_SET(env, dfsr, env->exception.fsr); |
b848ce2b | 10125 | A32_BANKED_CURRENT_REG_SET(env, dfar, env->exception.vaddress); |
3f1beaca | 10126 | qemu_log_mask(CPU_LOG_INT, "...with DFSR 0x%x DFAR 0x%x\n", |
4a7e2d73 | 10127 | env->exception.fsr, |
6cd8a264 | 10128 | (uint32_t)env->exception.vaddress); |
b5ff1b31 FB |
10129 | new_mode = ARM_CPU_MODE_ABT; |
10130 | addr = 0x10; | |
10131 | mask = CPSR_A | CPSR_I; | |
10132 | offset = 8; | |
10133 | break; | |
10134 | case EXCP_IRQ: | |
10135 | new_mode = ARM_CPU_MODE_IRQ; | |
10136 | addr = 0x18; | |
10137 | /* Disable IRQ and imprecise data aborts. */ | |
10138 | mask = CPSR_A | CPSR_I; | |
10139 | offset = 4; | |
de38d23b FA |
10140 | if (env->cp15.scr_el3 & SCR_IRQ) { |
10141 | /* IRQ routed to monitor mode */ | |
10142 | new_mode = ARM_CPU_MODE_MON; | |
10143 | mask |= CPSR_F; | |
10144 | } | |
b5ff1b31 FB |
10145 | break; |
10146 | case EXCP_FIQ: | |
10147 | new_mode = ARM_CPU_MODE_FIQ; | |
10148 | addr = 0x1c; | |
10149 | /* Disable FIQ, IRQ and imprecise data aborts. */ | |
10150 | mask = CPSR_A | CPSR_I | CPSR_F; | |
de38d23b FA |
10151 | if (env->cp15.scr_el3 & SCR_FIQ) { |
10152 | /* FIQ routed to monitor mode */ | |
10153 | new_mode = ARM_CPU_MODE_MON; | |
10154 | } | |
b5ff1b31 FB |
10155 | offset = 4; |
10156 | break; | |
87a4b270 PM |
10157 | case EXCP_VIRQ: |
10158 | new_mode = ARM_CPU_MODE_IRQ; | |
10159 | addr = 0x18; | |
10160 | /* Disable IRQ and imprecise data aborts. */ | |
10161 | mask = CPSR_A | CPSR_I; | |
10162 | offset = 4; | |
10163 | break; | |
10164 | case EXCP_VFIQ: | |
10165 | new_mode = ARM_CPU_MODE_FIQ; | |
10166 | addr = 0x1c; | |
10167 | /* Disable FIQ, IRQ and imprecise data aborts. */ | |
10168 | mask = CPSR_A | CPSR_I | CPSR_F; | |
10169 | offset = 4; | |
10170 | break; | |
dbe9d163 FA |
10171 | case EXCP_SMC: |
10172 | new_mode = ARM_CPU_MODE_MON; | |
10173 | addr = 0x08; | |
10174 | mask = CPSR_A | CPSR_I | CPSR_F; | |
10175 | offset = 0; | |
10176 | break; | |
b5ff1b31 | 10177 | default: |
a47dddd7 | 10178 | cpu_abort(cs, "Unhandled exception 0x%x\n", cs->exception_index); |
b5ff1b31 FB |
10179 | return; /* Never happens. Keep compiler happy. */ |
10180 | } | |
e89e51a1 FA |
10181 | |
10182 | if (new_mode == ARM_CPU_MODE_MON) { | |
10183 | addr += env->cp15.mvbar; | |
137feaa9 | 10184 | } else if (A32_BANKED_CURRENT_REG_GET(env, sctlr) & SCTLR_V) { |
e89e51a1 | 10185 | /* High vectors. When enabled, base address cannot be remapped. */ |
b5ff1b31 | 10186 | addr += 0xffff0000; |
8641136c NR |
10187 | } else { |
10188 | /* ARM v7 architectures provide a vector base address register to remap | |
10189 | * the interrupt vector table. | |
e89e51a1 | 10190 | * This register is only followed in non-monitor mode, and is banked. |
8641136c NR |
10191 | * Note: only bits 31:5 are valid. |
10192 | */ | |
fb6c91ba | 10193 | addr += A32_BANKED_CURRENT_REG_GET(env, vbar); |
b5ff1b31 | 10194 | } |
dbe9d163 FA |
10195 | |
10196 | if ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_MON) { | |
10197 | env->cp15.scr_el3 &= ~SCR_NS; | |
10198 | } | |
10199 | ||
dea8378b | 10200 | take_aarch32_exception(env, new_mode, mask, offset, addr); |
b5ff1b31 FB |
10201 | } |
10202 | ||
966f758c PM |
10203 | /* Handle exception entry to a target EL which is using AArch64 */ |
10204 | static void arm_cpu_do_interrupt_aarch64(CPUState *cs) | |
f3a9b694 PM |
10205 | { |
10206 | ARMCPU *cpu = ARM_CPU(cs); | |
10207 | CPUARMState *env = &cpu->env; | |
10208 | unsigned int new_el = env->exception.target_el; | |
10209 | target_ulong addr = env->cp15.vbar_el[new_el]; | |
10210 | unsigned int new_mode = aarch64_pstate_mode(new_el, true); | |
0ab5953b RH |
10211 | unsigned int cur_el = arm_current_el(env); |
10212 | ||
9a05f7b6 RH |
10213 | /* |
10214 | * Note that new_el can never be 0. If cur_el is 0, then | |
10215 | * el0_a64 is is_a64(), else el0_a64 is ignored. | |
10216 | */ | |
10217 | aarch64_sve_change_el(env, cur_el, new_el, is_a64(env)); | |
f3a9b694 | 10218 | |
0ab5953b | 10219 | if (cur_el < new_el) { |
3d6f7617 PM |
10220 | /* Entry vector offset depends on whether the implemented EL |
10221 | * immediately lower than the target level is using AArch32 or AArch64 | |
10222 | */ | |
10223 | bool is_aa64; | |
10224 | ||
10225 | switch (new_el) { | |
10226 | case 3: | |
10227 | is_aa64 = (env->cp15.scr_el3 & SCR_RW) != 0; | |
10228 | break; | |
10229 | case 2: | |
10230 | is_aa64 = (env->cp15.hcr_el2 & HCR_RW) != 0; | |
10231 | break; | |
10232 | case 1: | |
10233 | is_aa64 = is_a64(env); | |
10234 | break; | |
10235 | default: | |
10236 | g_assert_not_reached(); | |
10237 | } | |
10238 | ||
10239 | if (is_aa64) { | |
f3a9b694 PM |
10240 | addr += 0x400; |
10241 | } else { | |
10242 | addr += 0x600; | |
10243 | } | |
10244 | } else if (pstate_read(env) & PSTATE_SP) { | |
10245 | addr += 0x200; | |
10246 | } | |
10247 | ||
f3a9b694 PM |
10248 | switch (cs->exception_index) { |
10249 | case EXCP_PREFETCH_ABORT: | |
10250 | case EXCP_DATA_ABORT: | |
10251 | env->cp15.far_el[new_el] = env->exception.vaddress; | |
10252 | qemu_log_mask(CPU_LOG_INT, "...with FAR 0x%" PRIx64 "\n", | |
10253 | env->cp15.far_el[new_el]); | |
10254 | /* fall through */ | |
10255 | case EXCP_BKPT: | |
10256 | case EXCP_UDEF: | |
10257 | case EXCP_SWI: | |
10258 | case EXCP_HVC: | |
10259 | case EXCP_HYP_TRAP: | |
10260 | case EXCP_SMC: | |
4be42f40 PM |
10261 | if (syn_get_ec(env->exception.syndrome) == EC_ADVSIMDFPACCESSTRAP) { |
10262 | /* | |
10263 | * QEMU internal FP/SIMD syndromes from AArch32 include the | |
10264 | * TA and coproc fields which are only exposed if the exception | |
10265 | * is taken to AArch32 Hyp mode. Mask them out to get a valid | |
10266 | * AArch64 format syndrome. | |
10267 | */ | |
10268 | env->exception.syndrome &= ~MAKE_64BIT_MASK(0, 20); | |
10269 | } | |
f3a9b694 PM |
10270 | env->cp15.esr_el[new_el] = env->exception.syndrome; |
10271 | break; | |
10272 | case EXCP_IRQ: | |
10273 | case EXCP_VIRQ: | |
10274 | addr += 0x80; | |
10275 | break; | |
10276 | case EXCP_FIQ: | |
10277 | case EXCP_VFIQ: | |
10278 | addr += 0x100; | |
10279 | break; | |
10280 | case EXCP_SEMIHOST: | |
10281 | qemu_log_mask(CPU_LOG_INT, | |
10282 | "...handling as semihosting call 0x%" PRIx64 "\n", | |
10283 | env->xregs[0]); | |
10284 | env->xregs[0] = do_arm_semihosting(env); | |
10285 | return; | |
10286 | default: | |
10287 | cpu_abort(cs, "Unhandled exception 0x%x\n", cs->exception_index); | |
10288 | } | |
10289 | ||
10290 | if (is_a64(env)) { | |
10291 | env->banked_spsr[aarch64_banked_spsr_index(new_el)] = pstate_read(env); | |
10292 | aarch64_save_sp(env, arm_current_el(env)); | |
10293 | env->elr_el[new_el] = env->pc; | |
10294 | } else { | |
10295 | env->banked_spsr[aarch64_banked_spsr_index(new_el)] = cpsr_read(env); | |
f3a9b694 PM |
10296 | env->elr_el[new_el] = env->regs[15]; |
10297 | ||
10298 | aarch64_sync_32_to_64(env); | |
10299 | ||
10300 | env->condexec_bits = 0; | |
10301 | } | |
10302 | qemu_log_mask(CPU_LOG_INT, "...with ELR 0x%" PRIx64 "\n", | |
10303 | env->elr_el[new_el]); | |
10304 | ||
10305 | pstate_write(env, PSTATE_DAIF | new_mode); | |
10306 | env->aarch64 = 1; | |
10307 | aarch64_restore_sp(env, new_el); | |
10308 | ||
10309 | env->pc = addr; | |
10310 | ||
10311 | qemu_log_mask(CPU_LOG_INT, "...to EL%d PC 0x%" PRIx64 " PSTATE 0x%x\n", | |
10312 | new_el, env->pc, pstate_read(env)); | |
966f758c PM |
10313 | } |
10314 | ||
904c04de PM |
10315 | static inline bool check_for_semihosting(CPUState *cs) |
10316 | { | |
10317 | /* Check whether this exception is a semihosting call; if so | |
10318 | * then handle it and return true; otherwise return false. | |
10319 | */ | |
10320 | ARMCPU *cpu = ARM_CPU(cs); | |
10321 | CPUARMState *env = &cpu->env; | |
10322 | ||
10323 | if (is_a64(env)) { | |
10324 | if (cs->exception_index == EXCP_SEMIHOST) { | |
10325 | /* This is always the 64-bit semihosting exception. | |
10326 | * The "is this usermode" and "is semihosting enabled" | |
10327 | * checks have been done at translate time. | |
10328 | */ | |
10329 | qemu_log_mask(CPU_LOG_INT, | |
10330 | "...handling as semihosting call 0x%" PRIx64 "\n", | |
10331 | env->xregs[0]); | |
10332 | env->xregs[0] = do_arm_semihosting(env); | |
10333 | return true; | |
10334 | } | |
10335 | return false; | |
10336 | } else { | |
10337 | uint32_t imm; | |
10338 | ||
10339 | /* Only intercept calls from privileged modes, to provide some | |
10340 | * semblance of security. | |
10341 | */ | |
19a6e31c PM |
10342 | if (cs->exception_index != EXCP_SEMIHOST && |
10343 | (!semihosting_enabled() || | |
10344 | ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR))) { | |
904c04de PM |
10345 | return false; |
10346 | } | |
10347 | ||
10348 | switch (cs->exception_index) { | |
19a6e31c PM |
10349 | case EXCP_SEMIHOST: |
10350 | /* This is always a semihosting call; the "is this usermode" | |
10351 | * and "is semihosting enabled" checks have been done at | |
10352 | * translate time. | |
10353 | */ | |
10354 | break; | |
904c04de PM |
10355 | case EXCP_SWI: |
10356 | /* Check for semihosting interrupt. */ | |
10357 | if (env->thumb) { | |
f9fd40eb | 10358 | imm = arm_lduw_code(env, env->regs[15] - 2, arm_sctlr_b(env)) |
904c04de PM |
10359 | & 0xff; |
10360 | if (imm == 0xab) { | |
10361 | break; | |
10362 | } | |
10363 | } else { | |
f9fd40eb | 10364 | imm = arm_ldl_code(env, env->regs[15] - 4, arm_sctlr_b(env)) |
904c04de PM |
10365 | & 0xffffff; |
10366 | if (imm == 0x123456) { | |
10367 | break; | |
10368 | } | |
10369 | } | |
10370 | return false; | |
10371 | case EXCP_BKPT: | |
10372 | /* See if this is a semihosting syscall. */ | |
10373 | if (env->thumb) { | |
f9fd40eb | 10374 | imm = arm_lduw_code(env, env->regs[15], arm_sctlr_b(env)) |
904c04de PM |
10375 | & 0xff; |
10376 | if (imm == 0xab) { | |
10377 | env->regs[15] += 2; | |
10378 | break; | |
10379 | } | |
10380 | } | |
10381 | return false; | |
10382 | default: | |
10383 | return false; | |
10384 | } | |
10385 | ||
10386 | qemu_log_mask(CPU_LOG_INT, | |
10387 | "...handling as semihosting call 0x%x\n", | |
10388 | env->regs[0]); | |
10389 | env->regs[0] = do_arm_semihosting(env); | |
10390 | return true; | |
10391 | } | |
10392 | } | |
10393 | ||
966f758c PM |
10394 | /* Handle a CPU exception for A and R profile CPUs. |
10395 | * Do any appropriate logging, handle PSCI calls, and then hand off | |
10396 | * to the AArch64-entry or AArch32-entry function depending on the | |
10397 | * target exception level's register width. | |
10398 | */ | |
10399 | void arm_cpu_do_interrupt(CPUState *cs) | |
10400 | { | |
10401 | ARMCPU *cpu = ARM_CPU(cs); | |
10402 | CPUARMState *env = &cpu->env; | |
10403 | unsigned int new_el = env->exception.target_el; | |
10404 | ||
531c60a9 | 10405 | assert(!arm_feature(env, ARM_FEATURE_M)); |
966f758c PM |
10406 | |
10407 | arm_log_exception(cs->exception_index); | |
10408 | qemu_log_mask(CPU_LOG_INT, "...from EL%d to EL%d\n", arm_current_el(env), | |
10409 | new_el); | |
10410 | if (qemu_loglevel_mask(CPU_LOG_INT) | |
10411 | && !excp_is_internal(cs->exception_index)) { | |
6568da45 | 10412 | qemu_log_mask(CPU_LOG_INT, "...with ESR 0x%x/0x%" PRIx32 "\n", |
64b91e3f | 10413 | syn_get_ec(env->exception.syndrome), |
966f758c PM |
10414 | env->exception.syndrome); |
10415 | } | |
10416 | ||
10417 | if (arm_is_psci_call(cpu, cs->exception_index)) { | |
10418 | arm_handle_psci_call(cpu); | |
10419 | qemu_log_mask(CPU_LOG_INT, "...handled as PSCI call\n"); | |
10420 | return; | |
10421 | } | |
10422 | ||
904c04de PM |
10423 | /* Semihosting semantics depend on the register width of the |
10424 | * code that caused the exception, not the target exception level, | |
10425 | * so must be handled here. | |
966f758c | 10426 | */ |
904c04de PM |
10427 | if (check_for_semihosting(cs)) { |
10428 | return; | |
10429 | } | |
10430 | ||
b5c53d1b AL |
10431 | /* Hooks may change global state so BQL should be held, also the |
10432 | * BQL needs to be held for any modification of | |
10433 | * cs->interrupt_request. | |
10434 | */ | |
10435 | g_assert(qemu_mutex_iothread_locked()); | |
10436 | ||
10437 | arm_call_pre_el_change_hook(cpu); | |
10438 | ||
904c04de PM |
10439 | assert(!excp_is_internal(cs->exception_index)); |
10440 | if (arm_el_is_aa64(env, new_el)) { | |
966f758c PM |
10441 | arm_cpu_do_interrupt_aarch64(cs); |
10442 | } else { | |
10443 | arm_cpu_do_interrupt_aarch32(cs); | |
10444 | } | |
f3a9b694 | 10445 | |
bd7d00fc PM |
10446 | arm_call_el_change_hook(cpu); |
10447 | ||
f3a9b694 PM |
10448 | if (!kvm_enabled()) { |
10449 | cs->interrupt_request |= CPU_INTERRUPT_EXITTB; | |
10450 | } | |
10451 | } | |
c47eaf9f | 10452 | #endif /* !CONFIG_USER_ONLY */ |
0480f69a PM |
10453 | |
10454 | /* Return the exception level which controls this address translation regime */ | |
10455 | static inline uint32_t regime_el(CPUARMState *env, ARMMMUIdx mmu_idx) | |
10456 | { | |
10457 | switch (mmu_idx) { | |
10458 | case ARMMMUIdx_S2NS: | |
10459 | case ARMMMUIdx_S1E2: | |
10460 | return 2; | |
10461 | case ARMMMUIdx_S1E3: | |
10462 | return 3; | |
10463 | case ARMMMUIdx_S1SE0: | |
10464 | return arm_el_is_aa64(env, 3) ? 1 : 3; | |
10465 | case ARMMMUIdx_S1SE1: | |
10466 | case ARMMMUIdx_S1NSE0: | |
10467 | case ARMMMUIdx_S1NSE1: | |
62593718 PM |
10468 | case ARMMMUIdx_MPrivNegPri: |
10469 | case ARMMMUIdx_MUserNegPri: | |
e7b921c2 PM |
10470 | case ARMMMUIdx_MPriv: |
10471 | case ARMMMUIdx_MUser: | |
62593718 PM |
10472 | case ARMMMUIdx_MSPrivNegPri: |
10473 | case ARMMMUIdx_MSUserNegPri: | |
66787c78 | 10474 | case ARMMMUIdx_MSPriv: |
66787c78 | 10475 | case ARMMMUIdx_MSUser: |
0480f69a PM |
10476 | return 1; |
10477 | default: | |
10478 | g_assert_not_reached(); | |
10479 | } | |
10480 | } | |
10481 | ||
c47eaf9f PM |
10482 | #ifndef CONFIG_USER_ONLY |
10483 | ||
0480f69a PM |
10484 | /* Return the SCTLR value which controls this address translation regime */ |
10485 | static inline uint32_t regime_sctlr(CPUARMState *env, ARMMMUIdx mmu_idx) | |
10486 | { | |
10487 | return env->cp15.sctlr_el[regime_el(env, mmu_idx)]; | |
10488 | } | |
10489 | ||
10490 | /* Return true if the specified stage of address translation is disabled */ | |
10491 | static inline bool regime_translation_disabled(CPUARMState *env, | |
10492 | ARMMMUIdx mmu_idx) | |
10493 | { | |
29c483a5 | 10494 | if (arm_feature(env, ARM_FEATURE_M)) { |
ecf5e8ea | 10495 | switch (env->v7m.mpu_ctrl[regime_is_secure(env, mmu_idx)] & |
3bef7012 PM |
10496 | (R_V7M_MPU_CTRL_ENABLE_MASK | R_V7M_MPU_CTRL_HFNMIENA_MASK)) { |
10497 | case R_V7M_MPU_CTRL_ENABLE_MASK: | |
10498 | /* Enabled, but not for HardFault and NMI */ | |
62593718 | 10499 | return mmu_idx & ARM_MMU_IDX_M_NEGPRI; |
3bef7012 PM |
10500 | case R_V7M_MPU_CTRL_ENABLE_MASK | R_V7M_MPU_CTRL_HFNMIENA_MASK: |
10501 | /* Enabled for all cases */ | |
10502 | return false; | |
10503 | case 0: | |
10504 | default: | |
10505 | /* HFNMIENA set and ENABLE clear is UNPREDICTABLE, but | |
10506 | * we warned about that in armv7m_nvic.c when the guest set it. | |
10507 | */ | |
10508 | return true; | |
10509 | } | |
29c483a5 MD |
10510 | } |
10511 | ||
0480f69a | 10512 | if (mmu_idx == ARMMMUIdx_S2NS) { |
9d1bab33 PM |
10513 | /* HCR.DC means HCR.VM behaves as 1 */ |
10514 | return (env->cp15.hcr_el2 & (HCR_DC | HCR_VM)) == 0; | |
0480f69a | 10515 | } |
3d0e3080 PM |
10516 | |
10517 | if (env->cp15.hcr_el2 & HCR_TGE) { | |
10518 | /* TGE means that NS EL0/1 act as if SCTLR_EL1.M is zero */ | |
10519 | if (!regime_is_secure(env, mmu_idx) && regime_el(env, mmu_idx) == 1) { | |
10520 | return true; | |
10521 | } | |
10522 | } | |
10523 | ||
9d1bab33 PM |
10524 | if ((env->cp15.hcr_el2 & HCR_DC) && |
10525 | (mmu_idx == ARMMMUIdx_S1NSE0 || mmu_idx == ARMMMUIdx_S1NSE1)) { | |
10526 | /* HCR.DC means SCTLR_EL1.M behaves as 0 */ | |
10527 | return true; | |
10528 | } | |
10529 | ||
0480f69a PM |
10530 | return (regime_sctlr(env, mmu_idx) & SCTLR_M) == 0; |
10531 | } | |
10532 | ||
73462ddd PC |
10533 | static inline bool regime_translation_big_endian(CPUARMState *env, |
10534 | ARMMMUIdx mmu_idx) | |
10535 | { | |
10536 | return (regime_sctlr(env, mmu_idx) & SCTLR_EE) != 0; | |
10537 | } | |
10538 | ||
c47eaf9f PM |
10539 | /* Return the TTBR associated with this translation regime */ |
10540 | static inline uint64_t regime_ttbr(CPUARMState *env, ARMMMUIdx mmu_idx, | |
10541 | int ttbrn) | |
10542 | { | |
10543 | if (mmu_idx == ARMMMUIdx_S2NS) { | |
10544 | return env->cp15.vttbr_el2; | |
10545 | } | |
10546 | if (ttbrn == 0) { | |
10547 | return env->cp15.ttbr0_el[regime_el(env, mmu_idx)]; | |
10548 | } else { | |
10549 | return env->cp15.ttbr1_el[regime_el(env, mmu_idx)]; | |
10550 | } | |
10551 | } | |
10552 | ||
10553 | #endif /* !CONFIG_USER_ONLY */ | |
10554 | ||
0480f69a PM |
10555 | /* Return the TCR controlling this translation regime */ |
10556 | static inline TCR *regime_tcr(CPUARMState *env, ARMMMUIdx mmu_idx) | |
10557 | { | |
10558 | if (mmu_idx == ARMMMUIdx_S2NS) { | |
68e9c2fe | 10559 | return &env->cp15.vtcr_el2; |
0480f69a PM |
10560 | } |
10561 | return &env->cp15.tcr_el[regime_el(env, mmu_idx)]; | |
10562 | } | |
10563 | ||
8bd5c820 PM |
10564 | /* Convert a possible stage1+2 MMU index into the appropriate |
10565 | * stage 1 MMU index | |
10566 | */ | |
10567 | static inline ARMMMUIdx stage_1_mmu_idx(ARMMMUIdx mmu_idx) | |
10568 | { | |
10569 | if (mmu_idx == ARMMMUIdx_S12NSE0 || mmu_idx == ARMMMUIdx_S12NSE1) { | |
10570 | mmu_idx += (ARMMMUIdx_S1NSE0 - ARMMMUIdx_S12NSE0); | |
10571 | } | |
10572 | return mmu_idx; | |
10573 | } | |
10574 | ||
0480f69a PM |
10575 | /* Return true if the translation regime is using LPAE format page tables */ |
10576 | static inline bool regime_using_lpae_format(CPUARMState *env, | |
10577 | ARMMMUIdx mmu_idx) | |
10578 | { | |
10579 | int el = regime_el(env, mmu_idx); | |
10580 | if (el == 2 || arm_el_is_aa64(env, el)) { | |
10581 | return true; | |
10582 | } | |
10583 | if (arm_feature(env, ARM_FEATURE_LPAE) | |
10584 | && (regime_tcr(env, mmu_idx)->raw_tcr & TTBCR_EAE)) { | |
10585 | return true; | |
10586 | } | |
10587 | return false; | |
10588 | } | |
10589 | ||
deb2db99 AR |
10590 | /* Returns true if the stage 1 translation regime is using LPAE format page |
10591 | * tables. Used when raising alignment exceptions, whose FSR changes depending | |
10592 | * on whether the long or short descriptor format is in use. */ | |
10593 | bool arm_s1_regime_using_lpae_format(CPUARMState *env, ARMMMUIdx mmu_idx) | |
30901475 | 10594 | { |
8bd5c820 | 10595 | mmu_idx = stage_1_mmu_idx(mmu_idx); |
deb2db99 | 10596 | |
30901475 AB |
10597 | return regime_using_lpae_format(env, mmu_idx); |
10598 | } | |
10599 | ||
c47eaf9f | 10600 | #ifndef CONFIG_USER_ONLY |
0480f69a PM |
10601 | static inline bool regime_is_user(CPUARMState *env, ARMMMUIdx mmu_idx) |
10602 | { | |
10603 | switch (mmu_idx) { | |
10604 | case ARMMMUIdx_S1SE0: | |
10605 | case ARMMMUIdx_S1NSE0: | |
e7b921c2 | 10606 | case ARMMMUIdx_MUser: |
871bec7c | 10607 | case ARMMMUIdx_MSUser: |
62593718 PM |
10608 | case ARMMMUIdx_MUserNegPri: |
10609 | case ARMMMUIdx_MSUserNegPri: | |
0480f69a PM |
10610 | return true; |
10611 | default: | |
10612 | return false; | |
10613 | case ARMMMUIdx_S12NSE0: | |
10614 | case ARMMMUIdx_S12NSE1: | |
10615 | g_assert_not_reached(); | |
10616 | } | |
10617 | } | |
10618 | ||
0fbf5238 AJ |
10619 | /* Translate section/page access permissions to page |
10620 | * R/W protection flags | |
d76951b6 AJ |
10621 | * |
10622 | * @env: CPUARMState | |
10623 | * @mmu_idx: MMU index indicating required translation regime | |
10624 | * @ap: The 3-bit access permissions (AP[2:0]) | |
10625 | * @domain_prot: The 2-bit domain access permissions | |
0fbf5238 AJ |
10626 | */ |
10627 | static inline int ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx, | |
10628 | int ap, int domain_prot) | |
10629 | { | |
554b0b09 PM |
10630 | bool is_user = regime_is_user(env, mmu_idx); |
10631 | ||
10632 | if (domain_prot == 3) { | |
10633 | return PAGE_READ | PAGE_WRITE; | |
10634 | } | |
10635 | ||
554b0b09 PM |
10636 | switch (ap) { |
10637 | case 0: | |
10638 | if (arm_feature(env, ARM_FEATURE_V7)) { | |
10639 | return 0; | |
10640 | } | |
554b0b09 PM |
10641 | switch (regime_sctlr(env, mmu_idx) & (SCTLR_S | SCTLR_R)) { |
10642 | case SCTLR_S: | |
10643 | return is_user ? 0 : PAGE_READ; | |
10644 | case SCTLR_R: | |
10645 | return PAGE_READ; | |
10646 | default: | |
10647 | return 0; | |
10648 | } | |
10649 | case 1: | |
10650 | return is_user ? 0 : PAGE_READ | PAGE_WRITE; | |
10651 | case 2: | |
87c3d486 | 10652 | if (is_user) { |
0fbf5238 | 10653 | return PAGE_READ; |
87c3d486 | 10654 | } else { |
554b0b09 | 10655 | return PAGE_READ | PAGE_WRITE; |
87c3d486 | 10656 | } |
554b0b09 PM |
10657 | case 3: |
10658 | return PAGE_READ | PAGE_WRITE; | |
10659 | case 4: /* Reserved. */ | |
10660 | return 0; | |
10661 | case 5: | |
0fbf5238 | 10662 | return is_user ? 0 : PAGE_READ; |
554b0b09 | 10663 | case 6: |
0fbf5238 | 10664 | return PAGE_READ; |
554b0b09 | 10665 | case 7: |
87c3d486 | 10666 | if (!arm_feature(env, ARM_FEATURE_V6K)) { |
554b0b09 | 10667 | return 0; |
87c3d486 | 10668 | } |
0fbf5238 | 10669 | return PAGE_READ; |
554b0b09 | 10670 | default: |
0fbf5238 | 10671 | g_assert_not_reached(); |
554b0b09 | 10672 | } |
b5ff1b31 FB |
10673 | } |
10674 | ||
d76951b6 AJ |
10675 | /* Translate section/page access permissions to page |
10676 | * R/W protection flags. | |
10677 | * | |
d76951b6 | 10678 | * @ap: The 2-bit simple AP (AP[2:1]) |
d8e052b3 | 10679 | * @is_user: TRUE if accessing from PL0 |
d76951b6 | 10680 | */ |
d8e052b3 | 10681 | static inline int simple_ap_to_rw_prot_is_user(int ap, bool is_user) |
d76951b6 | 10682 | { |
d76951b6 AJ |
10683 | switch (ap) { |
10684 | case 0: | |
10685 | return is_user ? 0 : PAGE_READ | PAGE_WRITE; | |
10686 | case 1: | |
10687 | return PAGE_READ | PAGE_WRITE; | |
10688 | case 2: | |
10689 | return is_user ? 0 : PAGE_READ; | |
10690 | case 3: | |
10691 | return PAGE_READ; | |
10692 | default: | |
10693 | g_assert_not_reached(); | |
10694 | } | |
10695 | } | |
10696 | ||
d8e052b3 AJ |
10697 | static inline int |
10698 | simple_ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx, int ap) | |
10699 | { | |
10700 | return simple_ap_to_rw_prot_is_user(ap, regime_is_user(env, mmu_idx)); | |
10701 | } | |
10702 | ||
6ab1a5ee EI |
10703 | /* Translate S2 section/page access permissions to protection flags |
10704 | * | |
10705 | * @env: CPUARMState | |
10706 | * @s2ap: The 2-bit stage2 access permissions (S2AP) | |
10707 | * @xn: XN (execute-never) bit | |
10708 | */ | |
10709 | static int get_S2prot(CPUARMState *env, int s2ap, int xn) | |
10710 | { | |
10711 | int prot = 0; | |
10712 | ||
10713 | if (s2ap & 1) { | |
10714 | prot |= PAGE_READ; | |
10715 | } | |
10716 | if (s2ap & 2) { | |
10717 | prot |= PAGE_WRITE; | |
10718 | } | |
10719 | if (!xn) { | |
dfda6837 SS |
10720 | if (arm_el_is_aa64(env, 2) || prot & PAGE_READ) { |
10721 | prot |= PAGE_EXEC; | |
10722 | } | |
6ab1a5ee EI |
10723 | } |
10724 | return prot; | |
10725 | } | |
10726 | ||
d8e052b3 AJ |
10727 | /* Translate section/page access permissions to protection flags |
10728 | * | |
10729 | * @env: CPUARMState | |
10730 | * @mmu_idx: MMU index indicating required translation regime | |
10731 | * @is_aa64: TRUE if AArch64 | |
10732 | * @ap: The 2-bit simple AP (AP[2:1]) | |
10733 | * @ns: NS (non-secure) bit | |
10734 | * @xn: XN (execute-never) bit | |
10735 | * @pxn: PXN (privileged execute-never) bit | |
10736 | */ | |
10737 | static int get_S1prot(CPUARMState *env, ARMMMUIdx mmu_idx, bool is_aa64, | |
10738 | int ap, int ns, int xn, int pxn) | |
10739 | { | |
10740 | bool is_user = regime_is_user(env, mmu_idx); | |
10741 | int prot_rw, user_rw; | |
10742 | bool have_wxn; | |
10743 | int wxn = 0; | |
10744 | ||
10745 | assert(mmu_idx != ARMMMUIdx_S2NS); | |
10746 | ||
10747 | user_rw = simple_ap_to_rw_prot_is_user(ap, true); | |
10748 | if (is_user) { | |
10749 | prot_rw = user_rw; | |
10750 | } else { | |
10751 | prot_rw = simple_ap_to_rw_prot_is_user(ap, false); | |
10752 | } | |
10753 | ||
10754 | if (ns && arm_is_secure(env) && (env->cp15.scr_el3 & SCR_SIF)) { | |
10755 | return prot_rw; | |
10756 | } | |
10757 | ||
10758 | /* TODO have_wxn should be replaced with | |
10759 | * ARM_FEATURE_V8 || (ARM_FEATURE_V7 && ARM_FEATURE_EL2) | |
10760 | * when ARM_FEATURE_EL2 starts getting set. For now we assume all LPAE | |
10761 | * compatible processors have EL2, which is required for [U]WXN. | |
10762 | */ | |
10763 | have_wxn = arm_feature(env, ARM_FEATURE_LPAE); | |
10764 | ||
10765 | if (have_wxn) { | |
10766 | wxn = regime_sctlr(env, mmu_idx) & SCTLR_WXN; | |
10767 | } | |
10768 | ||
10769 | if (is_aa64) { | |
10770 | switch (regime_el(env, mmu_idx)) { | |
10771 | case 1: | |
10772 | if (!is_user) { | |
10773 | xn = pxn || (user_rw & PAGE_WRITE); | |
10774 | } | |
10775 | break; | |
10776 | case 2: | |
10777 | case 3: | |
10778 | break; | |
10779 | } | |
10780 | } else if (arm_feature(env, ARM_FEATURE_V7)) { | |
10781 | switch (regime_el(env, mmu_idx)) { | |
10782 | case 1: | |
10783 | case 3: | |
10784 | if (is_user) { | |
10785 | xn = xn || !(user_rw & PAGE_READ); | |
10786 | } else { | |
10787 | int uwxn = 0; | |
10788 | if (have_wxn) { | |
10789 | uwxn = regime_sctlr(env, mmu_idx) & SCTLR_UWXN; | |
10790 | } | |
10791 | xn = xn || !(prot_rw & PAGE_READ) || pxn || | |
10792 | (uwxn && (user_rw & PAGE_WRITE)); | |
10793 | } | |
10794 | break; | |
10795 | case 2: | |
10796 | break; | |
10797 | } | |
10798 | } else { | |
10799 | xn = wxn = 0; | |
10800 | } | |
10801 | ||
10802 | if (xn || (wxn && (prot_rw & PAGE_WRITE))) { | |
10803 | return prot_rw; | |
10804 | } | |
10805 | return prot_rw | PAGE_EXEC; | |
10806 | } | |
10807 | ||
0480f69a PM |
10808 | static bool get_level1_table_address(CPUARMState *env, ARMMMUIdx mmu_idx, |
10809 | uint32_t *table, uint32_t address) | |
b2fa1797 | 10810 | { |
0480f69a | 10811 | /* Note that we can only get here for an AArch32 PL0/PL1 lookup */ |
0480f69a | 10812 | TCR *tcr = regime_tcr(env, mmu_idx); |
11f136ee | 10813 | |
11f136ee FA |
10814 | if (address & tcr->mask) { |
10815 | if (tcr->raw_tcr & TTBCR_PD1) { | |
e389be16 FA |
10816 | /* Translation table walk disabled for TTBR1 */ |
10817 | return false; | |
10818 | } | |
aef878be | 10819 | *table = regime_ttbr(env, mmu_idx, 1) & 0xffffc000; |
e389be16 | 10820 | } else { |
11f136ee | 10821 | if (tcr->raw_tcr & TTBCR_PD0) { |
e389be16 FA |
10822 | /* Translation table walk disabled for TTBR0 */ |
10823 | return false; | |
10824 | } | |
aef878be | 10825 | *table = regime_ttbr(env, mmu_idx, 0) & tcr->base_mask; |
e389be16 FA |
10826 | } |
10827 | *table |= (address >> 18) & 0x3ffc; | |
10828 | return true; | |
b2fa1797 PB |
10829 | } |
10830 | ||
37785977 EI |
10831 | /* Translate a S1 pagetable walk through S2 if needed. */ |
10832 | static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx, | |
10833 | hwaddr addr, MemTxAttrs txattrs, | |
37785977 EI |
10834 | ARMMMUFaultInfo *fi) |
10835 | { | |
10836 | if ((mmu_idx == ARMMMUIdx_S1NSE0 || mmu_idx == ARMMMUIdx_S1NSE1) && | |
10837 | !regime_translation_disabled(env, ARMMMUIdx_S2NS)) { | |
10838 | target_ulong s2size; | |
10839 | hwaddr s2pa; | |
10840 | int s2prot; | |
10841 | int ret; | |
eadb2feb PM |
10842 | ARMCacheAttrs cacheattrs = {}; |
10843 | ARMCacheAttrs *pcacheattrs = NULL; | |
10844 | ||
10845 | if (env->cp15.hcr_el2 & HCR_PTW) { | |
10846 | /* | |
10847 | * PTW means we must fault if this S1 walk touches S2 Device | |
10848 | * memory; otherwise we don't care about the attributes and can | |
10849 | * save the S2 translation the effort of computing them. | |
10850 | */ | |
10851 | pcacheattrs = &cacheattrs; | |
10852 | } | |
37785977 EI |
10853 | |
10854 | ret = get_phys_addr_lpae(env, addr, 0, ARMMMUIdx_S2NS, &s2pa, | |
eadb2feb | 10855 | &txattrs, &s2prot, &s2size, fi, pcacheattrs); |
37785977 | 10856 | if (ret) { |
3b39d734 | 10857 | assert(fi->type != ARMFault_None); |
37785977 EI |
10858 | fi->s2addr = addr; |
10859 | fi->stage2 = true; | |
10860 | fi->s1ptw = true; | |
10861 | return ~0; | |
10862 | } | |
eadb2feb PM |
10863 | if (pcacheattrs && (pcacheattrs->attrs & 0xf0) == 0) { |
10864 | /* Access was to Device memory: generate Permission fault */ | |
10865 | fi->type = ARMFault_Permission; | |
10866 | fi->s2addr = addr; | |
10867 | fi->stage2 = true; | |
10868 | fi->s1ptw = true; | |
10869 | return ~0; | |
10870 | } | |
37785977 EI |
10871 | addr = s2pa; |
10872 | } | |
10873 | return addr; | |
10874 | } | |
10875 | ||
14577270 | 10876 | /* All loads done in the course of a page table walk go through here. */ |
a614e698 | 10877 | static uint32_t arm_ldl_ptw(CPUState *cs, hwaddr addr, bool is_secure, |
3795a6de | 10878 | ARMMMUIdx mmu_idx, ARMMMUFaultInfo *fi) |
ebca90e4 | 10879 | { |
a614e698 EI |
10880 | ARMCPU *cpu = ARM_CPU(cs); |
10881 | CPUARMState *env = &cpu->env; | |
ebca90e4 | 10882 | MemTxAttrs attrs = {}; |
3b39d734 | 10883 | MemTxResult result = MEMTX_OK; |
5ce4ff65 | 10884 | AddressSpace *as; |
3b39d734 | 10885 | uint32_t data; |
ebca90e4 PM |
10886 | |
10887 | attrs.secure = is_secure; | |
5ce4ff65 | 10888 | as = arm_addressspace(cs, attrs); |
3795a6de | 10889 | addr = S1_ptw_translate(env, mmu_idx, addr, attrs, fi); |
a614e698 EI |
10890 | if (fi->s1ptw) { |
10891 | return 0; | |
10892 | } | |
73462ddd | 10893 | if (regime_translation_big_endian(env, mmu_idx)) { |
3b39d734 | 10894 | data = address_space_ldl_be(as, addr, attrs, &result); |
73462ddd | 10895 | } else { |
3b39d734 | 10896 | data = address_space_ldl_le(as, addr, attrs, &result); |
73462ddd | 10897 | } |
3b39d734 PM |
10898 | if (result == MEMTX_OK) { |
10899 | return data; | |
10900 | } | |
10901 | fi->type = ARMFault_SyncExternalOnWalk; | |
10902 | fi->ea = arm_extabort_type(result); | |
10903 | return 0; | |
ebca90e4 PM |
10904 | } |
10905 | ||
37785977 | 10906 | static uint64_t arm_ldq_ptw(CPUState *cs, hwaddr addr, bool is_secure, |
3795a6de | 10907 | ARMMMUIdx mmu_idx, ARMMMUFaultInfo *fi) |
ebca90e4 | 10908 | { |
37785977 EI |
10909 | ARMCPU *cpu = ARM_CPU(cs); |
10910 | CPUARMState *env = &cpu->env; | |
ebca90e4 | 10911 | MemTxAttrs attrs = {}; |
3b39d734 | 10912 | MemTxResult result = MEMTX_OK; |
5ce4ff65 | 10913 | AddressSpace *as; |
9aea1ea3 | 10914 | uint64_t data; |
ebca90e4 PM |
10915 | |
10916 | attrs.secure = is_secure; | |
5ce4ff65 | 10917 | as = arm_addressspace(cs, attrs); |
3795a6de | 10918 | addr = S1_ptw_translate(env, mmu_idx, addr, attrs, fi); |
37785977 EI |
10919 | if (fi->s1ptw) { |
10920 | return 0; | |
10921 | } | |
73462ddd | 10922 | if (regime_translation_big_endian(env, mmu_idx)) { |
3b39d734 | 10923 | data = address_space_ldq_be(as, addr, attrs, &result); |
73462ddd | 10924 | } else { |
3b39d734 PM |
10925 | data = address_space_ldq_le(as, addr, attrs, &result); |
10926 | } | |
10927 | if (result == MEMTX_OK) { | |
10928 | return data; | |
73462ddd | 10929 | } |
3b39d734 PM |
10930 | fi->type = ARMFault_SyncExternalOnWalk; |
10931 | fi->ea = arm_extabort_type(result); | |
10932 | return 0; | |
ebca90e4 PM |
10933 | } |
10934 | ||
b7cc4e82 | 10935 | static bool get_phys_addr_v5(CPUARMState *env, uint32_t address, |
03ae85f8 | 10936 | MMUAccessType access_type, ARMMMUIdx mmu_idx, |
b7cc4e82 | 10937 | hwaddr *phys_ptr, int *prot, |
f989983e | 10938 | target_ulong *page_size, |
e14b5a23 | 10939 | ARMMMUFaultInfo *fi) |
b5ff1b31 | 10940 | { |
70d74660 | 10941 | CPUState *cs = CPU(arm_env_get_cpu(env)); |
f989983e | 10942 | int level = 1; |
b5ff1b31 FB |
10943 | uint32_t table; |
10944 | uint32_t desc; | |
10945 | int type; | |
10946 | int ap; | |
e389be16 | 10947 | int domain = 0; |
dd4ebc2e | 10948 | int domain_prot; |
a8170e5e | 10949 | hwaddr phys_addr; |
0480f69a | 10950 | uint32_t dacr; |
b5ff1b31 | 10951 | |
9ee6e8bb PB |
10952 | /* Pagetable walk. */ |
10953 | /* Lookup l1 descriptor. */ | |
0480f69a | 10954 | if (!get_level1_table_address(env, mmu_idx, &table, address)) { |
e389be16 | 10955 | /* Section translation fault if page walk is disabled by PD0 or PD1 */ |
f989983e | 10956 | fi->type = ARMFault_Translation; |
e389be16 FA |
10957 | goto do_fault; |
10958 | } | |
a614e698 | 10959 | desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx), |
3795a6de | 10960 | mmu_idx, fi); |
3b39d734 PM |
10961 | if (fi->type != ARMFault_None) { |
10962 | goto do_fault; | |
10963 | } | |
9ee6e8bb | 10964 | type = (desc & 3); |
dd4ebc2e | 10965 | domain = (desc >> 5) & 0x0f; |
0480f69a PM |
10966 | if (regime_el(env, mmu_idx) == 1) { |
10967 | dacr = env->cp15.dacr_ns; | |
10968 | } else { | |
10969 | dacr = env->cp15.dacr_s; | |
10970 | } | |
10971 | domain_prot = (dacr >> (domain * 2)) & 3; | |
9ee6e8bb | 10972 | if (type == 0) { |
601d70b9 | 10973 | /* Section translation fault. */ |
f989983e | 10974 | fi->type = ARMFault_Translation; |
9ee6e8bb PB |
10975 | goto do_fault; |
10976 | } | |
f989983e PM |
10977 | if (type != 2) { |
10978 | level = 2; | |
10979 | } | |
dd4ebc2e | 10980 | if (domain_prot == 0 || domain_prot == 2) { |
f989983e | 10981 | fi->type = ARMFault_Domain; |
9ee6e8bb PB |
10982 | goto do_fault; |
10983 | } | |
10984 | if (type == 2) { | |
10985 | /* 1Mb section. */ | |
10986 | phys_addr = (desc & 0xfff00000) | (address & 0x000fffff); | |
10987 | ap = (desc >> 10) & 3; | |
d4c430a8 | 10988 | *page_size = 1024 * 1024; |
9ee6e8bb PB |
10989 | } else { |
10990 | /* Lookup l2 entry. */ | |
554b0b09 PM |
10991 | if (type == 1) { |
10992 | /* Coarse pagetable. */ | |
10993 | table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc); | |
10994 | } else { | |
10995 | /* Fine pagetable. */ | |
10996 | table = (desc & 0xfffff000) | ((address >> 8) & 0xffc); | |
10997 | } | |
a614e698 | 10998 | desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx), |
3795a6de | 10999 | mmu_idx, fi); |
3b39d734 PM |
11000 | if (fi->type != ARMFault_None) { |
11001 | goto do_fault; | |
11002 | } | |
9ee6e8bb PB |
11003 | switch (desc & 3) { |
11004 | case 0: /* Page translation fault. */ | |
f989983e | 11005 | fi->type = ARMFault_Translation; |
9ee6e8bb PB |
11006 | goto do_fault; |
11007 | case 1: /* 64k page. */ | |
11008 | phys_addr = (desc & 0xffff0000) | (address & 0xffff); | |
11009 | ap = (desc >> (4 + ((address >> 13) & 6))) & 3; | |
d4c430a8 | 11010 | *page_size = 0x10000; |
ce819861 | 11011 | break; |
9ee6e8bb PB |
11012 | case 2: /* 4k page. */ |
11013 | phys_addr = (desc & 0xfffff000) | (address & 0xfff); | |
c10f7fc3 | 11014 | ap = (desc >> (4 + ((address >> 9) & 6))) & 3; |
d4c430a8 | 11015 | *page_size = 0x1000; |
ce819861 | 11016 | break; |
fc1891c7 | 11017 | case 3: /* 1k page, or ARMv6/XScale "extended small (4k) page" */ |
554b0b09 | 11018 | if (type == 1) { |
fc1891c7 PM |
11019 | /* ARMv6/XScale extended small page format */ |
11020 | if (arm_feature(env, ARM_FEATURE_XSCALE) | |
11021 | || arm_feature(env, ARM_FEATURE_V6)) { | |
554b0b09 | 11022 | phys_addr = (desc & 0xfffff000) | (address & 0xfff); |
fc1891c7 | 11023 | *page_size = 0x1000; |
554b0b09 | 11024 | } else { |
fc1891c7 PM |
11025 | /* UNPREDICTABLE in ARMv5; we choose to take a |
11026 | * page translation fault. | |
11027 | */ | |
f989983e | 11028 | fi->type = ARMFault_Translation; |
554b0b09 PM |
11029 | goto do_fault; |
11030 | } | |
11031 | } else { | |
11032 | phys_addr = (desc & 0xfffffc00) | (address & 0x3ff); | |
fc1891c7 | 11033 | *page_size = 0x400; |
554b0b09 | 11034 | } |
9ee6e8bb | 11035 | ap = (desc >> 4) & 3; |
ce819861 PB |
11036 | break; |
11037 | default: | |
9ee6e8bb PB |
11038 | /* Never happens, but compiler isn't smart enough to tell. */ |
11039 | abort(); | |
ce819861 | 11040 | } |
9ee6e8bb | 11041 | } |
0fbf5238 AJ |
11042 | *prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot); |
11043 | *prot |= *prot ? PAGE_EXEC : 0; | |
11044 | if (!(*prot & (1 << access_type))) { | |
9ee6e8bb | 11045 | /* Access permission fault. */ |
f989983e | 11046 | fi->type = ARMFault_Permission; |
9ee6e8bb PB |
11047 | goto do_fault; |
11048 | } | |
11049 | *phys_ptr = phys_addr; | |
b7cc4e82 | 11050 | return false; |
9ee6e8bb | 11051 | do_fault: |
f989983e PM |
11052 | fi->domain = domain; |
11053 | fi->level = level; | |
b7cc4e82 | 11054 | return true; |
9ee6e8bb PB |
11055 | } |
11056 | ||
b7cc4e82 | 11057 | static bool get_phys_addr_v6(CPUARMState *env, uint32_t address, |
03ae85f8 | 11058 | MMUAccessType access_type, ARMMMUIdx mmu_idx, |
b7cc4e82 | 11059 | hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot, |
f06cf243 | 11060 | target_ulong *page_size, ARMMMUFaultInfo *fi) |
9ee6e8bb | 11061 | { |
70d74660 | 11062 | CPUState *cs = CPU(arm_env_get_cpu(env)); |
f06cf243 | 11063 | int level = 1; |
9ee6e8bb PB |
11064 | uint32_t table; |
11065 | uint32_t desc; | |
11066 | uint32_t xn; | |
de9b05b8 | 11067 | uint32_t pxn = 0; |
9ee6e8bb PB |
11068 | int type; |
11069 | int ap; | |
de9b05b8 | 11070 | int domain = 0; |
dd4ebc2e | 11071 | int domain_prot; |
a8170e5e | 11072 | hwaddr phys_addr; |
0480f69a | 11073 | uint32_t dacr; |
8bf5b6a9 | 11074 | bool ns; |
9ee6e8bb PB |
11075 | |
11076 | /* Pagetable walk. */ | |
11077 | /* Lookup l1 descriptor. */ | |
0480f69a | 11078 | if (!get_level1_table_address(env, mmu_idx, &table, address)) { |
e389be16 | 11079 | /* Section translation fault if page walk is disabled by PD0 or PD1 */ |
f06cf243 | 11080 | fi->type = ARMFault_Translation; |
e389be16 FA |
11081 | goto do_fault; |
11082 | } | |
a614e698 | 11083 | desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx), |
3795a6de | 11084 | mmu_idx, fi); |
3b39d734 PM |
11085 | if (fi->type != ARMFault_None) { |
11086 | goto do_fault; | |
11087 | } | |
9ee6e8bb | 11088 | type = (desc & 3); |
de9b05b8 PM |
11089 | if (type == 0 || (type == 3 && !arm_feature(env, ARM_FEATURE_PXN))) { |
11090 | /* Section translation fault, or attempt to use the encoding | |
11091 | * which is Reserved on implementations without PXN. | |
11092 | */ | |
f06cf243 | 11093 | fi->type = ARMFault_Translation; |
9ee6e8bb | 11094 | goto do_fault; |
de9b05b8 PM |
11095 | } |
11096 | if ((type == 1) || !(desc & (1 << 18))) { | |
11097 | /* Page or Section. */ | |
dd4ebc2e | 11098 | domain = (desc >> 5) & 0x0f; |
9ee6e8bb | 11099 | } |
0480f69a PM |
11100 | if (regime_el(env, mmu_idx) == 1) { |
11101 | dacr = env->cp15.dacr_ns; | |
11102 | } else { | |
11103 | dacr = env->cp15.dacr_s; | |
11104 | } | |
f06cf243 PM |
11105 | if (type == 1) { |
11106 | level = 2; | |
11107 | } | |
0480f69a | 11108 | domain_prot = (dacr >> (domain * 2)) & 3; |
dd4ebc2e | 11109 | if (domain_prot == 0 || domain_prot == 2) { |
f06cf243 PM |
11110 | /* Section or Page domain fault */ |
11111 | fi->type = ARMFault_Domain; | |
9ee6e8bb PB |
11112 | goto do_fault; |
11113 | } | |
de9b05b8 | 11114 | if (type != 1) { |
9ee6e8bb PB |
11115 | if (desc & (1 << 18)) { |
11116 | /* Supersection. */ | |
11117 | phys_addr = (desc & 0xff000000) | (address & 0x00ffffff); | |
4e42a6ca SF |
11118 | phys_addr |= (uint64_t)extract32(desc, 20, 4) << 32; |
11119 | phys_addr |= (uint64_t)extract32(desc, 5, 4) << 36; | |
d4c430a8 | 11120 | *page_size = 0x1000000; |
b5ff1b31 | 11121 | } else { |
9ee6e8bb PB |
11122 | /* Section. */ |
11123 | phys_addr = (desc & 0xfff00000) | (address & 0x000fffff); | |
d4c430a8 | 11124 | *page_size = 0x100000; |
b5ff1b31 | 11125 | } |
9ee6e8bb PB |
11126 | ap = ((desc >> 10) & 3) | ((desc >> 13) & 4); |
11127 | xn = desc & (1 << 4); | |
de9b05b8 | 11128 | pxn = desc & 1; |
8bf5b6a9 | 11129 | ns = extract32(desc, 19, 1); |
9ee6e8bb | 11130 | } else { |
de9b05b8 PM |
11131 | if (arm_feature(env, ARM_FEATURE_PXN)) { |
11132 | pxn = (desc >> 2) & 1; | |
11133 | } | |
8bf5b6a9 | 11134 | ns = extract32(desc, 3, 1); |
9ee6e8bb PB |
11135 | /* Lookup l2 entry. */ |
11136 | table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc); | |
a614e698 | 11137 | desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx), |
3795a6de | 11138 | mmu_idx, fi); |
3b39d734 PM |
11139 | if (fi->type != ARMFault_None) { |
11140 | goto do_fault; | |
11141 | } | |
9ee6e8bb PB |
11142 | ap = ((desc >> 4) & 3) | ((desc >> 7) & 4); |
11143 | switch (desc & 3) { | |
11144 | case 0: /* Page translation fault. */ | |
f06cf243 | 11145 | fi->type = ARMFault_Translation; |
b5ff1b31 | 11146 | goto do_fault; |
9ee6e8bb PB |
11147 | case 1: /* 64k page. */ |
11148 | phys_addr = (desc & 0xffff0000) | (address & 0xffff); | |
11149 | xn = desc & (1 << 15); | |
d4c430a8 | 11150 | *page_size = 0x10000; |
9ee6e8bb PB |
11151 | break; |
11152 | case 2: case 3: /* 4k page. */ | |
11153 | phys_addr = (desc & 0xfffff000) | (address & 0xfff); | |
11154 | xn = desc & 1; | |
d4c430a8 | 11155 | *page_size = 0x1000; |
9ee6e8bb PB |
11156 | break; |
11157 | default: | |
11158 | /* Never happens, but compiler isn't smart enough to tell. */ | |
11159 | abort(); | |
b5ff1b31 | 11160 | } |
9ee6e8bb | 11161 | } |
dd4ebc2e | 11162 | if (domain_prot == 3) { |
c0034328 JR |
11163 | *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
11164 | } else { | |
0480f69a | 11165 | if (pxn && !regime_is_user(env, mmu_idx)) { |
de9b05b8 PM |
11166 | xn = 1; |
11167 | } | |
f06cf243 PM |
11168 | if (xn && access_type == MMU_INST_FETCH) { |
11169 | fi->type = ARMFault_Permission; | |
c0034328 | 11170 | goto do_fault; |
f06cf243 | 11171 | } |
9ee6e8bb | 11172 | |
d76951b6 AJ |
11173 | if (arm_feature(env, ARM_FEATURE_V6K) && |
11174 | (regime_sctlr(env, mmu_idx) & SCTLR_AFE)) { | |
11175 | /* The simplified model uses AP[0] as an access control bit. */ | |
11176 | if ((ap & 1) == 0) { | |
11177 | /* Access flag fault. */ | |
f06cf243 | 11178 | fi->type = ARMFault_AccessFlag; |
d76951b6 AJ |
11179 | goto do_fault; |
11180 | } | |
11181 | *prot = simple_ap_to_rw_prot(env, mmu_idx, ap >> 1); | |
11182 | } else { | |
11183 | *prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot); | |
c0034328 | 11184 | } |
0fbf5238 AJ |
11185 | if (*prot && !xn) { |
11186 | *prot |= PAGE_EXEC; | |
11187 | } | |
11188 | if (!(*prot & (1 << access_type))) { | |
c0034328 | 11189 | /* Access permission fault. */ |
f06cf243 | 11190 | fi->type = ARMFault_Permission; |
c0034328 JR |
11191 | goto do_fault; |
11192 | } | |
3ad493fc | 11193 | } |
8bf5b6a9 PM |
11194 | if (ns) { |
11195 | /* The NS bit will (as required by the architecture) have no effect if | |
11196 | * the CPU doesn't support TZ or this is a non-secure translation | |
11197 | * regime, because the attribute will already be non-secure. | |
11198 | */ | |
11199 | attrs->secure = false; | |
11200 | } | |
9ee6e8bb | 11201 | *phys_ptr = phys_addr; |
b7cc4e82 | 11202 | return false; |
b5ff1b31 | 11203 | do_fault: |
f06cf243 PM |
11204 | fi->domain = domain; |
11205 | fi->level = level; | |
b7cc4e82 | 11206 | return true; |
b5ff1b31 FB |
11207 | } |
11208 | ||
1853d5a9 | 11209 | /* |
a0e966c9 | 11210 | * check_s2_mmu_setup |
1853d5a9 EI |
11211 | * @cpu: ARMCPU |
11212 | * @is_aa64: True if the translation regime is in AArch64 state | |
11213 | * @startlevel: Suggested starting level | |
11214 | * @inputsize: Bitsize of IPAs | |
11215 | * @stride: Page-table stride (See the ARM ARM) | |
11216 | * | |
a0e966c9 EI |
11217 | * Returns true if the suggested S2 translation parameters are OK and |
11218 | * false otherwise. | |
1853d5a9 | 11219 | */ |
a0e966c9 EI |
11220 | static bool check_s2_mmu_setup(ARMCPU *cpu, bool is_aa64, int level, |
11221 | int inputsize, int stride) | |
1853d5a9 | 11222 | { |
98d68ec2 EI |
11223 | const int grainsize = stride + 3; |
11224 | int startsizecheck; | |
11225 | ||
1853d5a9 EI |
11226 | /* Negative levels are never allowed. */ |
11227 | if (level < 0) { | |
11228 | return false; | |
11229 | } | |
11230 | ||
98d68ec2 EI |
11231 | startsizecheck = inputsize - ((3 - level) * stride + grainsize); |
11232 | if (startsizecheck < 1 || startsizecheck > stride + 4) { | |
11233 | return false; | |
11234 | } | |
11235 | ||
1853d5a9 | 11236 | if (is_aa64) { |
3526423e | 11237 | CPUARMState *env = &cpu->env; |
1853d5a9 EI |
11238 | unsigned int pamax = arm_pamax(cpu); |
11239 | ||
11240 | switch (stride) { | |
11241 | case 13: /* 64KB Pages. */ | |
11242 | if (level == 0 || (level == 1 && pamax <= 42)) { | |
11243 | return false; | |
11244 | } | |
11245 | break; | |
11246 | case 11: /* 16KB Pages. */ | |
11247 | if (level == 0 || (level == 1 && pamax <= 40)) { | |
11248 | return false; | |
11249 | } | |
11250 | break; | |
11251 | case 9: /* 4KB Pages. */ | |
11252 | if (level == 0 && pamax <= 42) { | |
11253 | return false; | |
11254 | } | |
11255 | break; | |
11256 | default: | |
11257 | g_assert_not_reached(); | |
11258 | } | |
3526423e EI |
11259 | |
11260 | /* Inputsize checks. */ | |
11261 | if (inputsize > pamax && | |
11262 | (arm_el_is_aa64(env, 1) || inputsize > 40)) { | |
11263 | /* This is CONSTRAINED UNPREDICTABLE and we choose to fault. */ | |
11264 | return false; | |
11265 | } | |
1853d5a9 | 11266 | } else { |
1853d5a9 EI |
11267 | /* AArch32 only supports 4KB pages. Assert on that. */ |
11268 | assert(stride == 9); | |
11269 | ||
11270 | if (level == 0) { | |
11271 | return false; | |
11272 | } | |
1853d5a9 EI |
11273 | } |
11274 | return true; | |
11275 | } | |
11276 | ||
5b2d261d AB |
11277 | /* Translate from the 4-bit stage 2 representation of |
11278 | * memory attributes (without cache-allocation hints) to | |
11279 | * the 8-bit representation of the stage 1 MAIR registers | |
11280 | * (which includes allocation hints). | |
11281 | * | |
11282 | * ref: shared/translation/attrs/S2AttrDecode() | |
11283 | * .../S2ConvertAttrsHints() | |
11284 | */ | |
11285 | static uint8_t convert_stage2_attrs(CPUARMState *env, uint8_t s2attrs) | |
11286 | { | |
11287 | uint8_t hiattr = extract32(s2attrs, 2, 2); | |
11288 | uint8_t loattr = extract32(s2attrs, 0, 2); | |
11289 | uint8_t hihint = 0, lohint = 0; | |
11290 | ||
11291 | if (hiattr != 0) { /* normal memory */ | |
11292 | if ((env->cp15.hcr_el2 & HCR_CD) != 0) { /* cache disabled */ | |
11293 | hiattr = loattr = 1; /* non-cacheable */ | |
11294 | } else { | |
11295 | if (hiattr != 1) { /* Write-through or write-back */ | |
11296 | hihint = 3; /* RW allocate */ | |
11297 | } | |
11298 | if (loattr != 1) { /* Write-through or write-back */ | |
11299 | lohint = 3; /* RW allocate */ | |
11300 | } | |
11301 | } | |
11302 | } | |
11303 | ||
11304 | return (hiattr << 6) | (hihint << 4) | (loattr << 2) | lohint; | |
11305 | } | |
c47eaf9f | 11306 | #endif /* !CONFIG_USER_ONLY */ |
5b2d261d | 11307 | |
e737ed2a RH |
11308 | ARMVAParameters aa64_va_parameters_both(CPUARMState *env, uint64_t va, |
11309 | ARMMMUIdx mmu_idx) | |
ba97be9f RH |
11310 | { |
11311 | uint64_t tcr = regime_tcr(env, mmu_idx)->raw_tcr; | |
11312 | uint32_t el = regime_el(env, mmu_idx); | |
8220af7e | 11313 | bool tbi, tbid, epd, hpd, using16k, using64k; |
ba97be9f RH |
11314 | int select, tsz; |
11315 | ||
11316 | /* | |
11317 | * Bit 55 is always between the two regions, and is canonical for | |
11318 | * determining if address tagging is enabled. | |
11319 | */ | |
11320 | select = extract64(va, 55, 1); | |
11321 | ||
11322 | if (el > 1) { | |
11323 | tsz = extract32(tcr, 0, 6); | |
11324 | using64k = extract32(tcr, 14, 1); | |
11325 | using16k = extract32(tcr, 15, 1); | |
11326 | if (mmu_idx == ARMMMUIdx_S2NS) { | |
11327 | /* VTCR_EL2 */ | |
8220af7e | 11328 | tbi = tbid = hpd = false; |
ba97be9f RH |
11329 | } else { |
11330 | tbi = extract32(tcr, 20, 1); | |
11331 | hpd = extract32(tcr, 24, 1); | |
8220af7e | 11332 | tbid = extract32(tcr, 29, 1); |
ba97be9f RH |
11333 | } |
11334 | epd = false; | |
11335 | } else if (!select) { | |
11336 | tsz = extract32(tcr, 0, 6); | |
11337 | epd = extract32(tcr, 7, 1); | |
11338 | using64k = extract32(tcr, 14, 1); | |
11339 | using16k = extract32(tcr, 15, 1); | |
11340 | tbi = extract64(tcr, 37, 1); | |
11341 | hpd = extract64(tcr, 41, 1); | |
8220af7e | 11342 | tbid = extract64(tcr, 51, 1); |
ba97be9f RH |
11343 | } else { |
11344 | int tg = extract32(tcr, 30, 2); | |
11345 | using16k = tg == 1; | |
11346 | using64k = tg == 3; | |
11347 | tsz = extract32(tcr, 16, 6); | |
11348 | epd = extract32(tcr, 23, 1); | |
11349 | tbi = extract64(tcr, 38, 1); | |
11350 | hpd = extract64(tcr, 42, 1); | |
8220af7e | 11351 | tbid = extract64(tcr, 52, 1); |
ba97be9f RH |
11352 | } |
11353 | tsz = MIN(tsz, 39); /* TODO: ARMv8.4-TTST */ | |
11354 | tsz = MAX(tsz, 16); /* TODO: ARMv8.2-LVA */ | |
11355 | ||
11356 | return (ARMVAParameters) { | |
11357 | .tsz = tsz, | |
11358 | .select = select, | |
11359 | .tbi = tbi, | |
8220af7e | 11360 | .tbid = tbid, |
ba97be9f RH |
11361 | .epd = epd, |
11362 | .hpd = hpd, | |
11363 | .using16k = using16k, | |
11364 | .using64k = using64k, | |
11365 | }; | |
11366 | } | |
11367 | ||
e737ed2a RH |
11368 | ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va, |
11369 | ARMMMUIdx mmu_idx, bool data) | |
11370 | { | |
8220af7e RH |
11371 | ARMVAParameters ret = aa64_va_parameters_both(env, va, mmu_idx); |
11372 | ||
11373 | /* Present TBI as a composite with TBID. */ | |
11374 | ret.tbi &= (data || !ret.tbid); | |
11375 | return ret; | |
e737ed2a RH |
11376 | } |
11377 | ||
c47eaf9f | 11378 | #ifndef CONFIG_USER_ONLY |
ba97be9f RH |
11379 | static ARMVAParameters aa32_va_parameters(CPUARMState *env, uint32_t va, |
11380 | ARMMMUIdx mmu_idx) | |
11381 | { | |
11382 | uint64_t tcr = regime_tcr(env, mmu_idx)->raw_tcr; | |
11383 | uint32_t el = regime_el(env, mmu_idx); | |
11384 | int select, tsz; | |
11385 | bool epd, hpd; | |
11386 | ||
11387 | if (mmu_idx == ARMMMUIdx_S2NS) { | |
11388 | /* VTCR */ | |
11389 | bool sext = extract32(tcr, 4, 1); | |
11390 | bool sign = extract32(tcr, 3, 1); | |
11391 | ||
11392 | /* | |
11393 | * If the sign-extend bit is not the same as t0sz[3], the result | |
11394 | * is unpredictable. Flag this as a guest error. | |
11395 | */ | |
11396 | if (sign != sext) { | |
11397 | qemu_log_mask(LOG_GUEST_ERROR, | |
11398 | "AArch32: VTCR.S / VTCR.T0SZ[3] mismatch\n"); | |
11399 | } | |
11400 | tsz = sextract32(tcr, 0, 4) + 8; | |
11401 | select = 0; | |
11402 | hpd = false; | |
11403 | epd = false; | |
11404 | } else if (el == 2) { | |
11405 | /* HTCR */ | |
11406 | tsz = extract32(tcr, 0, 3); | |
11407 | select = 0; | |
11408 | hpd = extract64(tcr, 24, 1); | |
11409 | epd = false; | |
11410 | } else { | |
11411 | int t0sz = extract32(tcr, 0, 3); | |
11412 | int t1sz = extract32(tcr, 16, 3); | |
11413 | ||
11414 | if (t1sz == 0) { | |
11415 | select = va > (0xffffffffu >> t0sz); | |
11416 | } else { | |
11417 | /* Note that we will detect errors later. */ | |
11418 | select = va >= ~(0xffffffffu >> t1sz); | |
11419 | } | |
11420 | if (!select) { | |
11421 | tsz = t0sz; | |
11422 | epd = extract32(tcr, 7, 1); | |
11423 | hpd = extract64(tcr, 41, 1); | |
11424 | } else { | |
11425 | tsz = t1sz; | |
11426 | epd = extract32(tcr, 23, 1); | |
11427 | hpd = extract64(tcr, 42, 1); | |
11428 | } | |
11429 | /* For aarch32, hpd0 is not enabled without t2e as well. */ | |
11430 | hpd &= extract32(tcr, 6, 1); | |
11431 | } | |
11432 | ||
11433 | return (ARMVAParameters) { | |
11434 | .tsz = tsz, | |
11435 | .select = select, | |
11436 | .epd = epd, | |
11437 | .hpd = hpd, | |
11438 | }; | |
11439 | } | |
11440 | ||
b7cc4e82 | 11441 | static bool get_phys_addr_lpae(CPUARMState *env, target_ulong address, |
03ae85f8 | 11442 | MMUAccessType access_type, ARMMMUIdx mmu_idx, |
b7cc4e82 | 11443 | hwaddr *phys_ptr, MemTxAttrs *txattrs, int *prot, |
da909b2c | 11444 | target_ulong *page_size_ptr, |
5b2d261d | 11445 | ARMMMUFaultInfo *fi, ARMCacheAttrs *cacheattrs) |
3dde962f | 11446 | { |
1853d5a9 EI |
11447 | ARMCPU *cpu = arm_env_get_cpu(env); |
11448 | CPUState *cs = CPU(cpu); | |
3dde962f | 11449 | /* Read an LPAE long-descriptor translation table. */ |
da909b2c | 11450 | ARMFaultType fault_type = ARMFault_Translation; |
1b4093ea | 11451 | uint32_t level; |
ba97be9f | 11452 | ARMVAParameters param; |
3dde962f | 11453 | uint64_t ttbr; |
dddb5223 | 11454 | hwaddr descaddr, indexmask, indexmask_grainsize; |
3dde962f | 11455 | uint32_t tableattrs; |
36d820af | 11456 | target_ulong page_size; |
3dde962f | 11457 | uint32_t attrs; |
ba97be9f RH |
11458 | int32_t stride; |
11459 | int addrsize, inputsize; | |
0480f69a | 11460 | TCR *tcr = regime_tcr(env, mmu_idx); |
d8e052b3 | 11461 | int ap, ns, xn, pxn; |
88e8add8 | 11462 | uint32_t el = regime_el(env, mmu_idx); |
ba97be9f | 11463 | bool ttbr1_valid; |
6109769a | 11464 | uint64_t descaddrmask; |
6e99f762 | 11465 | bool aarch64 = arm_el_is_aa64(env, el); |
1bafc2ba | 11466 | bool guarded = false; |
0480f69a PM |
11467 | |
11468 | /* TODO: | |
88e8add8 GB |
11469 | * This code does not handle the different format TCR for VTCR_EL2. |
11470 | * This code also does not support shareability levels. | |
11471 | * Attribute and permission bit handling should also be checked when adding | |
11472 | * support for those page table walks. | |
0480f69a | 11473 | */ |
6e99f762 | 11474 | if (aarch64) { |
ba97be9f RH |
11475 | param = aa64_va_parameters(env, address, mmu_idx, |
11476 | access_type != MMU_INST_FETCH); | |
1b4093ea | 11477 | level = 0; |
88e8add8 GB |
11478 | /* If we are in 64-bit EL2 or EL3 then there is no TTBR1, so mark it |
11479 | * invalid. | |
11480 | */ | |
ba97be9f RH |
11481 | ttbr1_valid = (el < 2); |
11482 | addrsize = 64 - 8 * param.tbi; | |
11483 | inputsize = 64 - param.tsz; | |
d0a2cbce | 11484 | } else { |
ba97be9f | 11485 | param = aa32_va_parameters(env, address, mmu_idx); |
1b4093ea | 11486 | level = 1; |
d0a2cbce | 11487 | /* There is no TTBR1 for EL2 */ |
ba97be9f RH |
11488 | ttbr1_valid = (el != 2); |
11489 | addrsize = (mmu_idx == ARMMMUIdx_S2NS ? 40 : 32); | |
11490 | inputsize = addrsize - param.tsz; | |
2c8dd318 | 11491 | } |
3dde962f | 11492 | |
ba97be9f RH |
11493 | /* |
11494 | * We determined the region when collecting the parameters, but we | |
11495 | * have not yet validated that the address is valid for the region. | |
11496 | * Extract the top bits and verify that they all match select. | |
36d820af RH |
11497 | * |
11498 | * For aa32, if inputsize == addrsize, then we have selected the | |
11499 | * region by exclusion in aa32_va_parameters and there is no more | |
11500 | * validation to do here. | |
11501 | */ | |
11502 | if (inputsize < addrsize) { | |
11503 | target_ulong top_bits = sextract64(address, inputsize, | |
11504 | addrsize - inputsize); | |
11505 | if (-top_bits != param.select || (param.select && !ttbr1_valid)) { | |
11506 | /* The gap between the two regions is a Translation fault */ | |
11507 | fault_type = ARMFault_Translation; | |
11508 | goto do_fault; | |
11509 | } | |
3dde962f PM |
11510 | } |
11511 | ||
ba97be9f RH |
11512 | if (param.using64k) { |
11513 | stride = 13; | |
11514 | } else if (param.using16k) { | |
11515 | stride = 11; | |
11516 | } else { | |
11517 | stride = 9; | |
11518 | } | |
11519 | ||
3dde962f PM |
11520 | /* Note that QEMU ignores shareability and cacheability attributes, |
11521 | * so we don't need to do anything with the SH, ORGN, IRGN fields | |
11522 | * in the TTBCR. Similarly, TTBCR:A1 selects whether we get the | |
11523 | * ASID from TTBR0 or TTBR1, but QEMU's TLB doesn't currently | |
11524 | * implement any ASID-like capability so we can ignore it (instead | |
11525 | * we will always flush the TLB any time the ASID is changed). | |
11526 | */ | |
ba97be9f | 11527 | ttbr = regime_ttbr(env, mmu_idx, param.select); |
3dde962f | 11528 | |
0480f69a | 11529 | /* Here we should have set up all the parameters for the translation: |
6e99f762 | 11530 | * inputsize, ttbr, epd, stride, tbi |
0480f69a PM |
11531 | */ |
11532 | ||
ba97be9f | 11533 | if (param.epd) { |
88e8add8 GB |
11534 | /* Translation table walk disabled => Translation fault on TLB miss |
11535 | * Note: This is always 0 on 64-bit EL2 and EL3. | |
11536 | */ | |
3dde962f PM |
11537 | goto do_fault; |
11538 | } | |
11539 | ||
1853d5a9 EI |
11540 | if (mmu_idx != ARMMMUIdx_S2NS) { |
11541 | /* The starting level depends on the virtual address size (which can | |
11542 | * be up to 48 bits) and the translation granule size. It indicates | |
11543 | * the number of strides (stride bits at a time) needed to | |
11544 | * consume the bits of the input address. In the pseudocode this is: | |
11545 | * level = 4 - RoundUp((inputsize - grainsize) / stride) | |
11546 | * where their 'inputsize' is our 'inputsize', 'grainsize' is | |
11547 | * our 'stride + 3' and 'stride' is our 'stride'. | |
11548 | * Applying the usual "rounded up m/n is (m+n-1)/n" and simplifying: | |
11549 | * = 4 - (inputsize - stride - 3 + stride - 1) / stride | |
11550 | * = 4 - (inputsize - 4) / stride; | |
11551 | */ | |
11552 | level = 4 - (inputsize - 4) / stride; | |
11553 | } else { | |
11554 | /* For stage 2 translations the starting level is specified by the | |
11555 | * VTCR_EL2.SL0 field (whose interpretation depends on the page size) | |
11556 | */ | |
1b4093ea SS |
11557 | uint32_t sl0 = extract32(tcr->raw_tcr, 6, 2); |
11558 | uint32_t startlevel; | |
1853d5a9 EI |
11559 | bool ok; |
11560 | ||
6e99f762 | 11561 | if (!aarch64 || stride == 9) { |
1853d5a9 | 11562 | /* AArch32 or 4KB pages */ |
1b4093ea | 11563 | startlevel = 2 - sl0; |
1853d5a9 EI |
11564 | } else { |
11565 | /* 16KB or 64KB pages */ | |
1b4093ea | 11566 | startlevel = 3 - sl0; |
1853d5a9 EI |
11567 | } |
11568 | ||
11569 | /* Check that the starting level is valid. */ | |
6e99f762 | 11570 | ok = check_s2_mmu_setup(cpu, aarch64, startlevel, |
1b4093ea | 11571 | inputsize, stride); |
1853d5a9 | 11572 | if (!ok) { |
da909b2c | 11573 | fault_type = ARMFault_Translation; |
1853d5a9 EI |
11574 | goto do_fault; |
11575 | } | |
1b4093ea | 11576 | level = startlevel; |
1853d5a9 | 11577 | } |
3dde962f | 11578 | |
dddb5223 SS |
11579 | indexmask_grainsize = (1ULL << (stride + 3)) - 1; |
11580 | indexmask = (1ULL << (inputsize - (stride * (4 - level)))) - 1; | |
3dde962f PM |
11581 | |
11582 | /* Now we can extract the actual base address from the TTBR */ | |
2c8dd318 | 11583 | descaddr = extract64(ttbr, 0, 48); |
dddb5223 | 11584 | descaddr &= ~indexmask; |
3dde962f | 11585 | |
6109769a | 11586 | /* The address field in the descriptor goes up to bit 39 for ARMv7 |
dddb5223 SS |
11587 | * but up to bit 47 for ARMv8, but we use the descaddrmask |
11588 | * up to bit 39 for AArch32, because we don't need other bits in that case | |
11589 | * to construct next descriptor address (anyway they should be all zeroes). | |
6109769a | 11590 | */ |
6e99f762 | 11591 | descaddrmask = ((1ull << (aarch64 ? 48 : 40)) - 1) & |
dddb5223 | 11592 | ~indexmask_grainsize; |
6109769a | 11593 | |
ebca90e4 PM |
11594 | /* Secure accesses start with the page table in secure memory and |
11595 | * can be downgraded to non-secure at any step. Non-secure accesses | |
11596 | * remain non-secure. We implement this by just ORing in the NSTable/NS | |
11597 | * bits at each step. | |
11598 | */ | |
11599 | tableattrs = regime_is_secure(env, mmu_idx) ? 0 : (1 << 4); | |
3dde962f PM |
11600 | for (;;) { |
11601 | uint64_t descriptor; | |
ebca90e4 | 11602 | bool nstable; |
3dde962f | 11603 | |
dddb5223 | 11604 | descaddr |= (address >> (stride * (4 - level))) & indexmask; |
2c8dd318 | 11605 | descaddr &= ~7ULL; |
ebca90e4 | 11606 | nstable = extract32(tableattrs, 4, 1); |
3795a6de | 11607 | descriptor = arm_ldq_ptw(cs, descaddr, !nstable, mmu_idx, fi); |
3b39d734 | 11608 | if (fi->type != ARMFault_None) { |
37785977 EI |
11609 | goto do_fault; |
11610 | } | |
11611 | ||
3dde962f PM |
11612 | if (!(descriptor & 1) || |
11613 | (!(descriptor & 2) && (level == 3))) { | |
11614 | /* Invalid, or the Reserved level 3 encoding */ | |
11615 | goto do_fault; | |
11616 | } | |
6109769a | 11617 | descaddr = descriptor & descaddrmask; |
3dde962f PM |
11618 | |
11619 | if ((descriptor & 2) && (level < 3)) { | |
037c13c5 | 11620 | /* Table entry. The top five bits are attributes which may |
3dde962f PM |
11621 | * propagate down through lower levels of the table (and |
11622 | * which are all arranged so that 0 means "no effect", so | |
11623 | * we can gather them up by ORing in the bits at each level). | |
11624 | */ | |
11625 | tableattrs |= extract64(descriptor, 59, 5); | |
11626 | level++; | |
dddb5223 | 11627 | indexmask = indexmask_grainsize; |
3dde962f PM |
11628 | continue; |
11629 | } | |
11630 | /* Block entry at level 1 or 2, or page entry at level 3. | |
11631 | * These are basically the same thing, although the number | |
11632 | * of bits we pull in from the vaddr varies. | |
11633 | */ | |
973a5434 | 11634 | page_size = (1ULL << ((stride * (4 - level)) + 3)); |
3dde962f | 11635 | descaddr |= (address & (page_size - 1)); |
6ab1a5ee | 11636 | /* Extract attributes from the descriptor */ |
d615efac IC |
11637 | attrs = extract64(descriptor, 2, 10) |
11638 | | (extract64(descriptor, 52, 12) << 10); | |
6ab1a5ee EI |
11639 | |
11640 | if (mmu_idx == ARMMMUIdx_S2NS) { | |
11641 | /* Stage 2 table descriptors do not include any attribute fields */ | |
11642 | break; | |
11643 | } | |
11644 | /* Merge in attributes from table descriptors */ | |
037c13c5 | 11645 | attrs |= nstable << 3; /* NS */ |
1bafc2ba | 11646 | guarded = extract64(descriptor, 50, 1); /* GP */ |
ba97be9f | 11647 | if (param.hpd) { |
037c13c5 RH |
11648 | /* HPD disables all the table attributes except NSTable. */ |
11649 | break; | |
11650 | } | |
11651 | attrs |= extract32(tableattrs, 0, 2) << 11; /* XN, PXN */ | |
3dde962f PM |
11652 | /* The sense of AP[1] vs APTable[0] is reversed, as APTable[0] == 1 |
11653 | * means "force PL1 access only", which means forcing AP[1] to 0. | |
11654 | */ | |
037c13c5 RH |
11655 | attrs &= ~(extract32(tableattrs, 2, 1) << 4); /* !APT[0] => AP[1] */ |
11656 | attrs |= extract32(tableattrs, 3, 1) << 5; /* APT[1] => AP[2] */ | |
3dde962f PM |
11657 | break; |
11658 | } | |
11659 | /* Here descaddr is the final physical address, and attributes | |
11660 | * are all in attrs. | |
11661 | */ | |
da909b2c | 11662 | fault_type = ARMFault_AccessFlag; |
3dde962f PM |
11663 | if ((attrs & (1 << 8)) == 0) { |
11664 | /* Access flag */ | |
11665 | goto do_fault; | |
11666 | } | |
d8e052b3 AJ |
11667 | |
11668 | ap = extract32(attrs, 4, 2); | |
d8e052b3 | 11669 | xn = extract32(attrs, 12, 1); |
d8e052b3 | 11670 | |
6ab1a5ee EI |
11671 | if (mmu_idx == ARMMMUIdx_S2NS) { |
11672 | ns = true; | |
11673 | *prot = get_S2prot(env, ap, xn); | |
11674 | } else { | |
11675 | ns = extract32(attrs, 3, 1); | |
11676 | pxn = extract32(attrs, 11, 1); | |
6e99f762 | 11677 | *prot = get_S1prot(env, mmu_idx, aarch64, ap, ns, xn, pxn); |
6ab1a5ee | 11678 | } |
d8e052b3 | 11679 | |
da909b2c | 11680 | fault_type = ARMFault_Permission; |
d8e052b3 | 11681 | if (!(*prot & (1 << access_type))) { |
3dde962f PM |
11682 | goto do_fault; |
11683 | } | |
3dde962f | 11684 | |
8bf5b6a9 PM |
11685 | if (ns) { |
11686 | /* The NS bit will (as required by the architecture) have no effect if | |
11687 | * the CPU doesn't support TZ or this is a non-secure translation | |
11688 | * regime, because the attribute will already be non-secure. | |
11689 | */ | |
11690 | txattrs->secure = false; | |
11691 | } | |
1bafc2ba RH |
11692 | /* When in aarch64 mode, and BTI is enabled, remember GP in the IOTLB. */ |
11693 | if (aarch64 && guarded && cpu_isar_feature(aa64_bti, cpu)) { | |
11694 | txattrs->target_tlb_bit0 = true; | |
11695 | } | |
5b2d261d AB |
11696 | |
11697 | if (cacheattrs != NULL) { | |
11698 | if (mmu_idx == ARMMMUIdx_S2NS) { | |
11699 | cacheattrs->attrs = convert_stage2_attrs(env, | |
11700 | extract32(attrs, 0, 4)); | |
11701 | } else { | |
11702 | /* Index into MAIR registers for cache attributes */ | |
11703 | uint8_t attrindx = extract32(attrs, 0, 3); | |
11704 | uint64_t mair = env->cp15.mair_el[regime_el(env, mmu_idx)]; | |
11705 | assert(attrindx <= 7); | |
11706 | cacheattrs->attrs = extract64(mair, attrindx * 8, 8); | |
11707 | } | |
11708 | cacheattrs->shareability = extract32(attrs, 6, 2); | |
11709 | } | |
11710 | ||
3dde962f PM |
11711 | *phys_ptr = descaddr; |
11712 | *page_size_ptr = page_size; | |
b7cc4e82 | 11713 | return false; |
3dde962f PM |
11714 | |
11715 | do_fault: | |
da909b2c PM |
11716 | fi->type = fault_type; |
11717 | fi->level = level; | |
37785977 EI |
11718 | /* Tag the error as S2 for failed S1 PTW at S2 or ordinary S2. */ |
11719 | fi->stage2 = fi->s1ptw || (mmu_idx == ARMMMUIdx_S2NS); | |
b7cc4e82 | 11720 | return true; |
3dde962f PM |
11721 | } |
11722 | ||
f6bda88f PC |
11723 | static inline void get_phys_addr_pmsav7_default(CPUARMState *env, |
11724 | ARMMMUIdx mmu_idx, | |
11725 | int32_t address, int *prot) | |
11726 | { | |
3a00d560 MD |
11727 | if (!arm_feature(env, ARM_FEATURE_M)) { |
11728 | *prot = PAGE_READ | PAGE_WRITE; | |
11729 | switch (address) { | |
11730 | case 0xF0000000 ... 0xFFFFFFFF: | |
11731 | if (regime_sctlr(env, mmu_idx) & SCTLR_V) { | |
11732 | /* hivecs execing is ok */ | |
11733 | *prot |= PAGE_EXEC; | |
11734 | } | |
11735 | break; | |
11736 | case 0x00000000 ... 0x7FFFFFFF: | |
f6bda88f | 11737 | *prot |= PAGE_EXEC; |
3a00d560 MD |
11738 | break; |
11739 | } | |
11740 | } else { | |
11741 | /* Default system address map for M profile cores. | |
11742 | * The architecture specifies which regions are execute-never; | |
11743 | * at the MPU level no other checks are defined. | |
11744 | */ | |
11745 | switch (address) { | |
11746 | case 0x00000000 ... 0x1fffffff: /* ROM */ | |
11747 | case 0x20000000 ... 0x3fffffff: /* SRAM */ | |
11748 | case 0x60000000 ... 0x7fffffff: /* RAM */ | |
11749 | case 0x80000000 ... 0x9fffffff: /* RAM */ | |
11750 | *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; | |
11751 | break; | |
11752 | case 0x40000000 ... 0x5fffffff: /* Peripheral */ | |
11753 | case 0xa0000000 ... 0xbfffffff: /* Device */ | |
11754 | case 0xc0000000 ... 0xdfffffff: /* Device */ | |
11755 | case 0xe0000000 ... 0xffffffff: /* System */ | |
11756 | *prot = PAGE_READ | PAGE_WRITE; | |
11757 | break; | |
11758 | default: | |
11759 | g_assert_not_reached(); | |
f6bda88f | 11760 | } |
f6bda88f | 11761 | } |
f6bda88f PC |
11762 | } |
11763 | ||
29c483a5 MD |
11764 | static bool pmsav7_use_background_region(ARMCPU *cpu, |
11765 | ARMMMUIdx mmu_idx, bool is_user) | |
11766 | { | |
11767 | /* Return true if we should use the default memory map as a | |
11768 | * "background" region if there are no hits against any MPU regions. | |
11769 | */ | |
11770 | CPUARMState *env = &cpu->env; | |
11771 | ||
11772 | if (is_user) { | |
11773 | return false; | |
11774 | } | |
11775 | ||
11776 | if (arm_feature(env, ARM_FEATURE_M)) { | |
ecf5e8ea PM |
11777 | return env->v7m.mpu_ctrl[regime_is_secure(env, mmu_idx)] |
11778 | & R_V7M_MPU_CTRL_PRIVDEFENA_MASK; | |
29c483a5 MD |
11779 | } else { |
11780 | return regime_sctlr(env, mmu_idx) & SCTLR_BR; | |
11781 | } | |
11782 | } | |
11783 | ||
38aaa60c PM |
11784 | static inline bool m_is_ppb_region(CPUARMState *env, uint32_t address) |
11785 | { | |
11786 | /* True if address is in the M profile PPB region 0xe0000000 - 0xe00fffff */ | |
11787 | return arm_feature(env, ARM_FEATURE_M) && | |
11788 | extract32(address, 20, 12) == 0xe00; | |
11789 | } | |
11790 | ||
bf446a11 PM |
11791 | static inline bool m_is_system_region(CPUARMState *env, uint32_t address) |
11792 | { | |
11793 | /* True if address is in the M profile system region | |
11794 | * 0xe0000000 - 0xffffffff | |
11795 | */ | |
11796 | return arm_feature(env, ARM_FEATURE_M) && extract32(address, 29, 3) == 0x7; | |
11797 | } | |
11798 | ||
f6bda88f | 11799 | static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address, |
03ae85f8 | 11800 | MMUAccessType access_type, ARMMMUIdx mmu_idx, |
9375ad15 | 11801 | hwaddr *phys_ptr, int *prot, |
e5e40999 | 11802 | target_ulong *page_size, |
9375ad15 | 11803 | ARMMMUFaultInfo *fi) |
f6bda88f PC |
11804 | { |
11805 | ARMCPU *cpu = arm_env_get_cpu(env); | |
11806 | int n; | |
11807 | bool is_user = regime_is_user(env, mmu_idx); | |
11808 | ||
11809 | *phys_ptr = address; | |
e5e40999 | 11810 | *page_size = TARGET_PAGE_SIZE; |
f6bda88f PC |
11811 | *prot = 0; |
11812 | ||
38aaa60c PM |
11813 | if (regime_translation_disabled(env, mmu_idx) || |
11814 | m_is_ppb_region(env, address)) { | |
11815 | /* MPU disabled or M profile PPB access: use default memory map. | |
11816 | * The other case which uses the default memory map in the | |
11817 | * v7M ARM ARM pseudocode is exception vector reads from the vector | |
11818 | * table. In QEMU those accesses are done in arm_v7m_load_vector(), | |
11819 | * which always does a direct read using address_space_ldl(), rather | |
11820 | * than going via this function, so we don't need to check that here. | |
11821 | */ | |
f6bda88f PC |
11822 | get_phys_addr_pmsav7_default(env, mmu_idx, address, prot); |
11823 | } else { /* MPU enabled */ | |
11824 | for (n = (int)cpu->pmsav7_dregion - 1; n >= 0; n--) { | |
11825 | /* region search */ | |
11826 | uint32_t base = env->pmsav7.drbar[n]; | |
11827 | uint32_t rsize = extract32(env->pmsav7.drsr[n], 1, 5); | |
11828 | uint32_t rmask; | |
11829 | bool srdis = false; | |
11830 | ||
11831 | if (!(env->pmsav7.drsr[n] & 0x1)) { | |
11832 | continue; | |
11833 | } | |
11834 | ||
11835 | if (!rsize) { | |
c9f9f124 MD |
11836 | qemu_log_mask(LOG_GUEST_ERROR, |
11837 | "DRSR[%d]: Rsize field cannot be 0\n", n); | |
f6bda88f PC |
11838 | continue; |
11839 | } | |
11840 | rsize++; | |
11841 | rmask = (1ull << rsize) - 1; | |
11842 | ||
11843 | if (base & rmask) { | |
c9f9f124 MD |
11844 | qemu_log_mask(LOG_GUEST_ERROR, |
11845 | "DRBAR[%d]: 0x%" PRIx32 " misaligned " | |
11846 | "to DRSR region size, mask = 0x%" PRIx32 "\n", | |
11847 | n, base, rmask); | |
f6bda88f PC |
11848 | continue; |
11849 | } | |
11850 | ||
11851 | if (address < base || address > base + rmask) { | |
9d2b5a58 PM |
11852 | /* |
11853 | * Address not in this region. We must check whether the | |
11854 | * region covers addresses in the same page as our address. | |
11855 | * In that case we must not report a size that covers the | |
11856 | * whole page for a subsequent hit against a different MPU | |
11857 | * region or the background region, because it would result in | |
11858 | * incorrect TLB hits for subsequent accesses to addresses that | |
11859 | * are in this MPU region. | |
11860 | */ | |
11861 | if (ranges_overlap(base, rmask, | |
11862 | address & TARGET_PAGE_MASK, | |
11863 | TARGET_PAGE_SIZE)) { | |
11864 | *page_size = 1; | |
11865 | } | |
f6bda88f PC |
11866 | continue; |
11867 | } | |
11868 | ||
11869 | /* Region matched */ | |
11870 | ||
11871 | if (rsize >= 8) { /* no subregions for regions < 256 bytes */ | |
11872 | int i, snd; | |
11873 | uint32_t srdis_mask; | |
11874 | ||
11875 | rsize -= 3; /* sub region size (power of 2) */ | |
11876 | snd = ((address - base) >> rsize) & 0x7; | |
11877 | srdis = extract32(env->pmsav7.drsr[n], snd + 8, 1); | |
11878 | ||
11879 | srdis_mask = srdis ? 0x3 : 0x0; | |
11880 | for (i = 2; i <= 8 && rsize < TARGET_PAGE_BITS; i *= 2) { | |
11881 | /* This will check in groups of 2, 4 and then 8, whether | |
11882 | * the subregion bits are consistent. rsize is incremented | |
11883 | * back up to give the region size, considering consistent | |
11884 | * adjacent subregions as one region. Stop testing if rsize | |
11885 | * is already big enough for an entire QEMU page. | |
11886 | */ | |
11887 | int snd_rounded = snd & ~(i - 1); | |
11888 | uint32_t srdis_multi = extract32(env->pmsav7.drsr[n], | |
11889 | snd_rounded + 8, i); | |
11890 | if (srdis_mask ^ srdis_multi) { | |
11891 | break; | |
11892 | } | |
11893 | srdis_mask = (srdis_mask << i) | srdis_mask; | |
11894 | rsize++; | |
11895 | } | |
11896 | } | |
f6bda88f PC |
11897 | if (srdis) { |
11898 | continue; | |
11899 | } | |
e5e40999 PM |
11900 | if (rsize < TARGET_PAGE_BITS) { |
11901 | *page_size = 1 << rsize; | |
11902 | } | |
f6bda88f PC |
11903 | break; |
11904 | } | |
11905 | ||
11906 | if (n == -1) { /* no hits */ | |
29c483a5 | 11907 | if (!pmsav7_use_background_region(cpu, mmu_idx, is_user)) { |
f6bda88f | 11908 | /* background fault */ |
9375ad15 | 11909 | fi->type = ARMFault_Background; |
f6bda88f PC |
11910 | return true; |
11911 | } | |
11912 | get_phys_addr_pmsav7_default(env, mmu_idx, address, prot); | |
11913 | } else { /* a MPU hit! */ | |
11914 | uint32_t ap = extract32(env->pmsav7.dracr[n], 8, 3); | |
bf446a11 PM |
11915 | uint32_t xn = extract32(env->pmsav7.dracr[n], 12, 1); |
11916 | ||
11917 | if (m_is_system_region(env, address)) { | |
11918 | /* System space is always execute never */ | |
11919 | xn = 1; | |
11920 | } | |
f6bda88f PC |
11921 | |
11922 | if (is_user) { /* User mode AP bit decoding */ | |
11923 | switch (ap) { | |
11924 | case 0: | |
11925 | case 1: | |
11926 | case 5: | |
11927 | break; /* no access */ | |
11928 | case 3: | |
11929 | *prot |= PAGE_WRITE; | |
11930 | /* fall through */ | |
11931 | case 2: | |
11932 | case 6: | |
11933 | *prot |= PAGE_READ | PAGE_EXEC; | |
11934 | break; | |
8638f1ad PM |
11935 | case 7: |
11936 | /* for v7M, same as 6; for R profile a reserved value */ | |
11937 | if (arm_feature(env, ARM_FEATURE_M)) { | |
11938 | *prot |= PAGE_READ | PAGE_EXEC; | |
11939 | break; | |
11940 | } | |
11941 | /* fall through */ | |
f6bda88f PC |
11942 | default: |
11943 | qemu_log_mask(LOG_GUEST_ERROR, | |
c9f9f124 MD |
11944 | "DRACR[%d]: Bad value for AP bits: 0x%" |
11945 | PRIx32 "\n", n, ap); | |
f6bda88f PC |
11946 | } |
11947 | } else { /* Priv. mode AP bits decoding */ | |
11948 | switch (ap) { | |
11949 | case 0: | |
11950 | break; /* no access */ | |
11951 | case 1: | |
11952 | case 2: | |
11953 | case 3: | |
11954 | *prot |= PAGE_WRITE; | |
11955 | /* fall through */ | |
11956 | case 5: | |
11957 | case 6: | |
11958 | *prot |= PAGE_READ | PAGE_EXEC; | |
11959 | break; | |
8638f1ad PM |
11960 | case 7: |
11961 | /* for v7M, same as 6; for R profile a reserved value */ | |
11962 | if (arm_feature(env, ARM_FEATURE_M)) { | |
11963 | *prot |= PAGE_READ | PAGE_EXEC; | |
11964 | break; | |
11965 | } | |
11966 | /* fall through */ | |
f6bda88f PC |
11967 | default: |
11968 | qemu_log_mask(LOG_GUEST_ERROR, | |
c9f9f124 MD |
11969 | "DRACR[%d]: Bad value for AP bits: 0x%" |
11970 | PRIx32 "\n", n, ap); | |
f6bda88f PC |
11971 | } |
11972 | } | |
11973 | ||
11974 | /* execute never */ | |
bf446a11 | 11975 | if (xn) { |
f6bda88f PC |
11976 | *prot &= ~PAGE_EXEC; |
11977 | } | |
11978 | } | |
11979 | } | |
11980 | ||
9375ad15 PM |
11981 | fi->type = ARMFault_Permission; |
11982 | fi->level = 1; | |
f6bda88f PC |
11983 | return !(*prot & (1 << access_type)); |
11984 | } | |
11985 | ||
35337cc3 PM |
11986 | static bool v8m_is_sau_exempt(CPUARMState *env, |
11987 | uint32_t address, MMUAccessType access_type) | |
11988 | { | |
11989 | /* The architecture specifies that certain address ranges are | |
11990 | * exempt from v8M SAU/IDAU checks. | |
11991 | */ | |
11992 | return | |
11993 | (access_type == MMU_INST_FETCH && m_is_system_region(env, address)) || | |
11994 | (address >= 0xe0000000 && address <= 0xe0002fff) || | |
11995 | (address >= 0xe000e000 && address <= 0xe000efff) || | |
11996 | (address >= 0xe002e000 && address <= 0xe002efff) || | |
11997 | (address >= 0xe0040000 && address <= 0xe0041fff) || | |
11998 | (address >= 0xe00ff000 && address <= 0xe00fffff); | |
11999 | } | |
12000 | ||
12001 | static void v8m_security_lookup(CPUARMState *env, uint32_t address, | |
12002 | MMUAccessType access_type, ARMMMUIdx mmu_idx, | |
12003 | V8M_SAttributes *sattrs) | |
12004 | { | |
12005 | /* Look up the security attributes for this address. Compare the | |
12006 | * pseudocode SecurityCheck() function. | |
12007 | * We assume the caller has zero-initialized *sattrs. | |
12008 | */ | |
12009 | ARMCPU *cpu = arm_env_get_cpu(env); | |
12010 | int r; | |
181962fd PM |
12011 | bool idau_exempt = false, idau_ns = true, idau_nsc = true; |
12012 | int idau_region = IREGION_NOTVALID; | |
72042435 PM |
12013 | uint32_t addr_page_base = address & TARGET_PAGE_MASK; |
12014 | uint32_t addr_page_limit = addr_page_base + (TARGET_PAGE_SIZE - 1); | |
35337cc3 | 12015 | |
181962fd PM |
12016 | if (cpu->idau) { |
12017 | IDAUInterfaceClass *iic = IDAU_INTERFACE_GET_CLASS(cpu->idau); | |
12018 | IDAUInterface *ii = IDAU_INTERFACE(cpu->idau); | |
12019 | ||
12020 | iic->check(ii, address, &idau_region, &idau_exempt, &idau_ns, | |
12021 | &idau_nsc); | |
12022 | } | |
35337cc3 PM |
12023 | |
12024 | if (access_type == MMU_INST_FETCH && extract32(address, 28, 4) == 0xf) { | |
12025 | /* 0xf0000000..0xffffffff is always S for insn fetches */ | |
12026 | return; | |
12027 | } | |
12028 | ||
181962fd | 12029 | if (idau_exempt || v8m_is_sau_exempt(env, address, access_type)) { |
35337cc3 PM |
12030 | sattrs->ns = !regime_is_secure(env, mmu_idx); |
12031 | return; | |
12032 | } | |
12033 | ||
181962fd PM |
12034 | if (idau_region != IREGION_NOTVALID) { |
12035 | sattrs->irvalid = true; | |
12036 | sattrs->iregion = idau_region; | |
12037 | } | |
12038 | ||
35337cc3 PM |
12039 | switch (env->sau.ctrl & 3) { |
12040 | case 0: /* SAU.ENABLE == 0, SAU.ALLNS == 0 */ | |
12041 | break; | |
12042 | case 2: /* SAU.ENABLE == 0, SAU.ALLNS == 1 */ | |
12043 | sattrs->ns = true; | |
12044 | break; | |
12045 | default: /* SAU.ENABLE == 1 */ | |
12046 | for (r = 0; r < cpu->sau_sregion; r++) { | |
12047 | if (env->sau.rlar[r] & 1) { | |
12048 | uint32_t base = env->sau.rbar[r] & ~0x1f; | |
12049 | uint32_t limit = env->sau.rlar[r] | 0x1f; | |
12050 | ||
12051 | if (base <= address && limit >= address) { | |
72042435 PM |
12052 | if (base > addr_page_base || limit < addr_page_limit) { |
12053 | sattrs->subpage = true; | |
12054 | } | |
35337cc3 PM |
12055 | if (sattrs->srvalid) { |
12056 | /* If we hit in more than one region then we must report | |
12057 | * as Secure, not NS-Callable, with no valid region | |
12058 | * number info. | |
12059 | */ | |
12060 | sattrs->ns = false; | |
12061 | sattrs->nsc = false; | |
12062 | sattrs->sregion = 0; | |
12063 | sattrs->srvalid = false; | |
12064 | break; | |
12065 | } else { | |
12066 | if (env->sau.rlar[r] & 2) { | |
12067 | sattrs->nsc = true; | |
12068 | } else { | |
12069 | sattrs->ns = true; | |
12070 | } | |
12071 | sattrs->srvalid = true; | |
12072 | sattrs->sregion = r; | |
12073 | } | |
9d2b5a58 PM |
12074 | } else { |
12075 | /* | |
12076 | * Address not in this region. We must check whether the | |
12077 | * region covers addresses in the same page as our address. | |
12078 | * In that case we must not report a size that covers the | |
12079 | * whole page for a subsequent hit against a different MPU | |
12080 | * region or the background region, because it would result | |
12081 | * in incorrect TLB hits for subsequent accesses to | |
12082 | * addresses that are in this MPU region. | |
12083 | */ | |
12084 | if (limit >= base && | |
12085 | ranges_overlap(base, limit - base + 1, | |
12086 | addr_page_base, | |
12087 | TARGET_PAGE_SIZE)) { | |
12088 | sattrs->subpage = true; | |
12089 | } | |
35337cc3 PM |
12090 | } |
12091 | } | |
12092 | } | |
7e3f1223 TR |
12093 | break; |
12094 | } | |
35337cc3 | 12095 | |
7e3f1223 TR |
12096 | /* |
12097 | * The IDAU will override the SAU lookup results if it specifies | |
12098 | * higher security than the SAU does. | |
12099 | */ | |
12100 | if (!idau_ns) { | |
12101 | if (sattrs->ns || (!idau_nsc && sattrs->nsc)) { | |
12102 | sattrs->ns = false; | |
12103 | sattrs->nsc = idau_nsc; | |
181962fd | 12104 | } |
35337cc3 PM |
12105 | } |
12106 | } | |
12107 | ||
54317c0f PM |
12108 | static bool pmsav8_mpu_lookup(CPUARMState *env, uint32_t address, |
12109 | MMUAccessType access_type, ARMMMUIdx mmu_idx, | |
12110 | hwaddr *phys_ptr, MemTxAttrs *txattrs, | |
72042435 PM |
12111 | int *prot, bool *is_subpage, |
12112 | ARMMMUFaultInfo *fi, uint32_t *mregion) | |
54317c0f PM |
12113 | { |
12114 | /* Perform a PMSAv8 MPU lookup (without also doing the SAU check | |
12115 | * that a full phys-to-virt translation does). | |
12116 | * mregion is (if not NULL) set to the region number which matched, | |
12117 | * or -1 if no region number is returned (MPU off, address did not | |
12118 | * hit a region, address hit in multiple regions). | |
72042435 PM |
12119 | * We set is_subpage to true if the region hit doesn't cover the |
12120 | * entire TARGET_PAGE the address is within. | |
54317c0f | 12121 | */ |
504e3cc3 PM |
12122 | ARMCPU *cpu = arm_env_get_cpu(env); |
12123 | bool is_user = regime_is_user(env, mmu_idx); | |
62c58ee0 | 12124 | uint32_t secure = regime_is_secure(env, mmu_idx); |
504e3cc3 PM |
12125 | int n; |
12126 | int matchregion = -1; | |
12127 | bool hit = false; | |
72042435 PM |
12128 | uint32_t addr_page_base = address & TARGET_PAGE_MASK; |
12129 | uint32_t addr_page_limit = addr_page_base + (TARGET_PAGE_SIZE - 1); | |
504e3cc3 | 12130 | |
72042435 | 12131 | *is_subpage = false; |
504e3cc3 PM |
12132 | *phys_ptr = address; |
12133 | *prot = 0; | |
54317c0f PM |
12134 | if (mregion) { |
12135 | *mregion = -1; | |
35337cc3 PM |
12136 | } |
12137 | ||
504e3cc3 PM |
12138 | /* Unlike the ARM ARM pseudocode, we don't need to check whether this |
12139 | * was an exception vector read from the vector table (which is always | |
12140 | * done using the default system address map), because those accesses | |
12141 | * are done in arm_v7m_load_vector(), which always does a direct | |
12142 | * read using address_space_ldl(), rather than going via this function. | |
12143 | */ | |
12144 | if (regime_translation_disabled(env, mmu_idx)) { /* MPU disabled */ | |
12145 | hit = true; | |
12146 | } else if (m_is_ppb_region(env, address)) { | |
12147 | hit = true; | |
504e3cc3 | 12148 | } else { |
cff21316 PM |
12149 | if (pmsav7_use_background_region(cpu, mmu_idx, is_user)) { |
12150 | hit = true; | |
12151 | } | |
12152 | ||
504e3cc3 PM |
12153 | for (n = (int)cpu->pmsav7_dregion - 1; n >= 0; n--) { |
12154 | /* region search */ | |
12155 | /* Note that the base address is bits [31:5] from the register | |
12156 | * with bits [4:0] all zeroes, but the limit address is bits | |
12157 | * [31:5] from the register with bits [4:0] all ones. | |
12158 | */ | |
62c58ee0 PM |
12159 | uint32_t base = env->pmsav8.rbar[secure][n] & ~0x1f; |
12160 | uint32_t limit = env->pmsav8.rlar[secure][n] | 0x1f; | |
504e3cc3 | 12161 | |
62c58ee0 | 12162 | if (!(env->pmsav8.rlar[secure][n] & 0x1)) { |
504e3cc3 PM |
12163 | /* Region disabled */ |
12164 | continue; | |
12165 | } | |
12166 | ||
12167 | if (address < base || address > limit) { | |
9d2b5a58 PM |
12168 | /* |
12169 | * Address not in this region. We must check whether the | |
12170 | * region covers addresses in the same page as our address. | |
12171 | * In that case we must not report a size that covers the | |
12172 | * whole page for a subsequent hit against a different MPU | |
12173 | * region or the background region, because it would result in | |
12174 | * incorrect TLB hits for subsequent accesses to addresses that | |
12175 | * are in this MPU region. | |
12176 | */ | |
12177 | if (limit >= base && | |
12178 | ranges_overlap(base, limit - base + 1, | |
12179 | addr_page_base, | |
12180 | TARGET_PAGE_SIZE)) { | |
12181 | *is_subpage = true; | |
12182 | } | |
504e3cc3 PM |
12183 | continue; |
12184 | } | |
12185 | ||
72042435 PM |
12186 | if (base > addr_page_base || limit < addr_page_limit) { |
12187 | *is_subpage = true; | |
12188 | } | |
12189 | ||
cff21316 | 12190 | if (matchregion != -1) { |
504e3cc3 PM |
12191 | /* Multiple regions match -- always a failure (unlike |
12192 | * PMSAv7 where highest-numbered-region wins) | |
12193 | */ | |
3f551b5b PM |
12194 | fi->type = ARMFault_Permission; |
12195 | fi->level = 1; | |
504e3cc3 PM |
12196 | return true; |
12197 | } | |
12198 | ||
12199 | matchregion = n; | |
12200 | hit = true; | |
504e3cc3 PM |
12201 | } |
12202 | } | |
12203 | ||
12204 | if (!hit) { | |
12205 | /* background fault */ | |
3f551b5b | 12206 | fi->type = ARMFault_Background; |
504e3cc3 PM |
12207 | return true; |
12208 | } | |
12209 | ||
12210 | if (matchregion == -1) { | |
12211 | /* hit using the background region */ | |
12212 | get_phys_addr_pmsav7_default(env, mmu_idx, address, prot); | |
12213 | } else { | |
62c58ee0 PM |
12214 | uint32_t ap = extract32(env->pmsav8.rbar[secure][matchregion], 1, 2); |
12215 | uint32_t xn = extract32(env->pmsav8.rbar[secure][matchregion], 0, 1); | |
504e3cc3 PM |
12216 | |
12217 | if (m_is_system_region(env, address)) { | |
12218 | /* System space is always execute never */ | |
12219 | xn = 1; | |
12220 | } | |
12221 | ||
12222 | *prot = simple_ap_to_rw_prot(env, mmu_idx, ap); | |
12223 | if (*prot && !xn) { | |
12224 | *prot |= PAGE_EXEC; | |
12225 | } | |
12226 | /* We don't need to look the attribute up in the MAIR0/MAIR1 | |
12227 | * registers because that only tells us about cacheability. | |
12228 | */ | |
54317c0f PM |
12229 | if (mregion) { |
12230 | *mregion = matchregion; | |
12231 | } | |
504e3cc3 PM |
12232 | } |
12233 | ||
3f551b5b PM |
12234 | fi->type = ARMFault_Permission; |
12235 | fi->level = 1; | |
504e3cc3 PM |
12236 | return !(*prot & (1 << access_type)); |
12237 | } | |
12238 | ||
54317c0f PM |
12239 | |
12240 | static bool get_phys_addr_pmsav8(CPUARMState *env, uint32_t address, | |
12241 | MMUAccessType access_type, ARMMMUIdx mmu_idx, | |
12242 | hwaddr *phys_ptr, MemTxAttrs *txattrs, | |
72042435 PM |
12243 | int *prot, target_ulong *page_size, |
12244 | ARMMMUFaultInfo *fi) | |
54317c0f PM |
12245 | { |
12246 | uint32_t secure = regime_is_secure(env, mmu_idx); | |
12247 | V8M_SAttributes sattrs = {}; | |
72042435 PM |
12248 | bool ret; |
12249 | bool mpu_is_subpage; | |
54317c0f PM |
12250 | |
12251 | if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { | |
12252 | v8m_security_lookup(env, address, access_type, mmu_idx, &sattrs); | |
12253 | if (access_type == MMU_INST_FETCH) { | |
12254 | /* Instruction fetches always use the MMU bank and the | |
12255 | * transaction attribute determined by the fetch address, | |
12256 | * regardless of CPU state. This is painful for QEMU | |
12257 | * to handle, because it would mean we need to encode | |
12258 | * into the mmu_idx not just the (user, negpri) information | |
12259 | * for the current security state but also that for the | |
12260 | * other security state, which would balloon the number | |
12261 | * of mmu_idx values needed alarmingly. | |
12262 | * Fortunately we can avoid this because it's not actually | |
12263 | * possible to arbitrarily execute code from memory with | |
12264 | * the wrong security attribute: it will always generate | |
12265 | * an exception of some kind or another, apart from the | |
12266 | * special case of an NS CPU executing an SG instruction | |
12267 | * in S&NSC memory. So we always just fail the translation | |
12268 | * here and sort things out in the exception handler | |
12269 | * (including possibly emulating an SG instruction). | |
12270 | */ | |
12271 | if (sattrs.ns != !secure) { | |
3f551b5b PM |
12272 | if (sattrs.nsc) { |
12273 | fi->type = ARMFault_QEMU_NSCExec; | |
12274 | } else { | |
12275 | fi->type = ARMFault_QEMU_SFault; | |
12276 | } | |
72042435 | 12277 | *page_size = sattrs.subpage ? 1 : TARGET_PAGE_SIZE; |
54317c0f PM |
12278 | *phys_ptr = address; |
12279 | *prot = 0; | |
12280 | return true; | |
12281 | } | |
12282 | } else { | |
12283 | /* For data accesses we always use the MMU bank indicated | |
12284 | * by the current CPU state, but the security attributes | |
12285 | * might downgrade a secure access to nonsecure. | |
12286 | */ | |
12287 | if (sattrs.ns) { | |
12288 | txattrs->secure = false; | |
12289 | } else if (!secure) { | |
12290 | /* NS access to S memory must fault. | |
12291 | * Architecturally we should first check whether the | |
12292 | * MPU information for this address indicates that we | |
12293 | * are doing an unaligned access to Device memory, which | |
12294 | * should generate a UsageFault instead. QEMU does not | |
12295 | * currently check for that kind of unaligned access though. | |
12296 | * If we added it we would need to do so as a special case | |
12297 | * for M_FAKE_FSR_SFAULT in arm_v7m_cpu_do_interrupt(). | |
12298 | */ | |
3f551b5b | 12299 | fi->type = ARMFault_QEMU_SFault; |
72042435 | 12300 | *page_size = sattrs.subpage ? 1 : TARGET_PAGE_SIZE; |
54317c0f PM |
12301 | *phys_ptr = address; |
12302 | *prot = 0; | |
12303 | return true; | |
12304 | } | |
12305 | } | |
12306 | } | |
12307 | ||
72042435 PM |
12308 | ret = pmsav8_mpu_lookup(env, address, access_type, mmu_idx, phys_ptr, |
12309 | txattrs, prot, &mpu_is_subpage, fi, NULL); | |
72042435 PM |
12310 | *page_size = sattrs.subpage || mpu_is_subpage ? 1 : TARGET_PAGE_SIZE; |
12311 | return ret; | |
54317c0f PM |
12312 | } |
12313 | ||
13689d43 | 12314 | static bool get_phys_addr_pmsav5(CPUARMState *env, uint32_t address, |
03ae85f8 | 12315 | MMUAccessType access_type, ARMMMUIdx mmu_idx, |
53a4e5c5 PM |
12316 | hwaddr *phys_ptr, int *prot, |
12317 | ARMMMUFaultInfo *fi) | |
9ee6e8bb PB |
12318 | { |
12319 | int n; | |
12320 | uint32_t mask; | |
12321 | uint32_t base; | |
0480f69a | 12322 | bool is_user = regime_is_user(env, mmu_idx); |
9ee6e8bb | 12323 | |
3279adb9 PM |
12324 | if (regime_translation_disabled(env, mmu_idx)) { |
12325 | /* MPU disabled. */ | |
12326 | *phys_ptr = address; | |
12327 | *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; | |
12328 | return false; | |
12329 | } | |
12330 | ||
9ee6e8bb PB |
12331 | *phys_ptr = address; |
12332 | for (n = 7; n >= 0; n--) { | |
554b0b09 | 12333 | base = env->cp15.c6_region[n]; |
87c3d486 | 12334 | if ((base & 1) == 0) { |
554b0b09 | 12335 | continue; |
87c3d486 | 12336 | } |
554b0b09 PM |
12337 | mask = 1 << ((base >> 1) & 0x1f); |
12338 | /* Keep this shift separate from the above to avoid an | |
12339 | (undefined) << 32. */ | |
12340 | mask = (mask << 1) - 1; | |
87c3d486 | 12341 | if (((base ^ address) & ~mask) == 0) { |
554b0b09 | 12342 | break; |
87c3d486 | 12343 | } |
9ee6e8bb | 12344 | } |
87c3d486 | 12345 | if (n < 0) { |
53a4e5c5 | 12346 | fi->type = ARMFault_Background; |
b7cc4e82 | 12347 | return true; |
87c3d486 | 12348 | } |
9ee6e8bb | 12349 | |
03ae85f8 | 12350 | if (access_type == MMU_INST_FETCH) { |
7e09797c | 12351 | mask = env->cp15.pmsav5_insn_ap; |
9ee6e8bb | 12352 | } else { |
7e09797c | 12353 | mask = env->cp15.pmsav5_data_ap; |
9ee6e8bb PB |
12354 | } |
12355 | mask = (mask >> (n * 4)) & 0xf; | |
12356 | switch (mask) { | |
12357 | case 0: | |
53a4e5c5 PM |
12358 | fi->type = ARMFault_Permission; |
12359 | fi->level = 1; | |
b7cc4e82 | 12360 | return true; |
9ee6e8bb | 12361 | case 1: |
87c3d486 | 12362 | if (is_user) { |
53a4e5c5 PM |
12363 | fi->type = ARMFault_Permission; |
12364 | fi->level = 1; | |
b7cc4e82 | 12365 | return true; |
87c3d486 | 12366 | } |
554b0b09 PM |
12367 | *prot = PAGE_READ | PAGE_WRITE; |
12368 | break; | |
9ee6e8bb | 12369 | case 2: |
554b0b09 | 12370 | *prot = PAGE_READ; |
87c3d486 | 12371 | if (!is_user) { |
554b0b09 | 12372 | *prot |= PAGE_WRITE; |
87c3d486 | 12373 | } |
554b0b09 | 12374 | break; |
9ee6e8bb | 12375 | case 3: |
554b0b09 PM |
12376 | *prot = PAGE_READ | PAGE_WRITE; |
12377 | break; | |
9ee6e8bb | 12378 | case 5: |
87c3d486 | 12379 | if (is_user) { |
53a4e5c5 PM |
12380 | fi->type = ARMFault_Permission; |
12381 | fi->level = 1; | |
b7cc4e82 | 12382 | return true; |
87c3d486 | 12383 | } |
554b0b09 PM |
12384 | *prot = PAGE_READ; |
12385 | break; | |
9ee6e8bb | 12386 | case 6: |
554b0b09 PM |
12387 | *prot = PAGE_READ; |
12388 | break; | |
9ee6e8bb | 12389 | default: |
554b0b09 | 12390 | /* Bad permission. */ |
53a4e5c5 PM |
12391 | fi->type = ARMFault_Permission; |
12392 | fi->level = 1; | |
b7cc4e82 | 12393 | return true; |
9ee6e8bb | 12394 | } |
3ad493fc | 12395 | *prot |= PAGE_EXEC; |
b7cc4e82 | 12396 | return false; |
9ee6e8bb PB |
12397 | } |
12398 | ||
5b2d261d AB |
12399 | /* Combine either inner or outer cacheability attributes for normal |
12400 | * memory, according to table D4-42 and pseudocode procedure | |
12401 | * CombineS1S2AttrHints() of ARM DDI 0487B.b (the ARMv8 ARM). | |
12402 | * | |
12403 | * NB: only stage 1 includes allocation hints (RW bits), leading to | |
12404 | * some asymmetry. | |
12405 | */ | |
12406 | static uint8_t combine_cacheattr_nibble(uint8_t s1, uint8_t s2) | |
12407 | { | |
12408 | if (s1 == 4 || s2 == 4) { | |
12409 | /* non-cacheable has precedence */ | |
12410 | return 4; | |
12411 | } else if (extract32(s1, 2, 2) == 0 || extract32(s1, 2, 2) == 2) { | |
12412 | /* stage 1 write-through takes precedence */ | |
12413 | return s1; | |
12414 | } else if (extract32(s2, 2, 2) == 2) { | |
12415 | /* stage 2 write-through takes precedence, but the allocation hint | |
12416 | * is still taken from stage 1 | |
12417 | */ | |
12418 | return (2 << 2) | extract32(s1, 0, 2); | |
12419 | } else { /* write-back */ | |
12420 | return s1; | |
12421 | } | |
12422 | } | |
12423 | ||
12424 | /* Combine S1 and S2 cacheability/shareability attributes, per D4.5.4 | |
12425 | * and CombineS1S2Desc() | |
12426 | * | |
12427 | * @s1: Attributes from stage 1 walk | |
12428 | * @s2: Attributes from stage 2 walk | |
12429 | */ | |
12430 | static ARMCacheAttrs combine_cacheattrs(ARMCacheAttrs s1, ARMCacheAttrs s2) | |
12431 | { | |
12432 | uint8_t s1lo = extract32(s1.attrs, 0, 4), s2lo = extract32(s2.attrs, 0, 4); | |
12433 | uint8_t s1hi = extract32(s1.attrs, 4, 4), s2hi = extract32(s2.attrs, 4, 4); | |
12434 | ARMCacheAttrs ret; | |
12435 | ||
12436 | /* Combine shareability attributes (table D4-43) */ | |
12437 | if (s1.shareability == 2 || s2.shareability == 2) { | |
12438 | /* if either are outer-shareable, the result is outer-shareable */ | |
12439 | ret.shareability = 2; | |
12440 | } else if (s1.shareability == 3 || s2.shareability == 3) { | |
12441 | /* if either are inner-shareable, the result is inner-shareable */ | |
12442 | ret.shareability = 3; | |
12443 | } else { | |
12444 | /* both non-shareable */ | |
12445 | ret.shareability = 0; | |
12446 | } | |
12447 | ||
12448 | /* Combine memory type and cacheability attributes */ | |
12449 | if (s1hi == 0 || s2hi == 0) { | |
12450 | /* Device has precedence over normal */ | |
12451 | if (s1lo == 0 || s2lo == 0) { | |
12452 | /* nGnRnE has precedence over anything */ | |
12453 | ret.attrs = 0; | |
12454 | } else if (s1lo == 4 || s2lo == 4) { | |
12455 | /* non-Reordering has precedence over Reordering */ | |
12456 | ret.attrs = 4; /* nGnRE */ | |
12457 | } else if (s1lo == 8 || s2lo == 8) { | |
12458 | /* non-Gathering has precedence over Gathering */ | |
12459 | ret.attrs = 8; /* nGRE */ | |
12460 | } else { | |
12461 | ret.attrs = 0xc; /* GRE */ | |
12462 | } | |
12463 | ||
12464 | /* Any location for which the resultant memory type is any | |
12465 | * type of Device memory is always treated as Outer Shareable. | |
12466 | */ | |
12467 | ret.shareability = 2; | |
12468 | } else { /* Normal memory */ | |
12469 | /* Outer/inner cacheability combine independently */ | |
12470 | ret.attrs = combine_cacheattr_nibble(s1hi, s2hi) << 4 | |
12471 | | combine_cacheattr_nibble(s1lo, s2lo); | |
12472 | ||
12473 | if (ret.attrs == 0x44) { | |
12474 | /* Any location for which the resultant memory type is Normal | |
12475 | * Inner Non-cacheable, Outer Non-cacheable is always treated | |
12476 | * as Outer Shareable. | |
12477 | */ | |
12478 | ret.shareability = 2; | |
12479 | } | |
12480 | } | |
12481 | ||
12482 | return ret; | |
12483 | } | |
12484 | ||
12485 | ||
702a9357 PM |
12486 | /* get_phys_addr - get the physical address for this virtual address |
12487 | * | |
12488 | * Find the physical address corresponding to the given virtual address, | |
12489 | * by doing a translation table walk on MMU based systems or using the | |
12490 | * MPU state on MPU based systems. | |
12491 | * | |
b7cc4e82 PC |
12492 | * Returns false if the translation was successful. Otherwise, phys_ptr, attrs, |
12493 | * prot and page_size may not be filled in, and the populated fsr value provides | |
702a9357 PM |
12494 | * information on why the translation aborted, in the format of a |
12495 | * DFSR/IFSR fault register, with the following caveats: | |
12496 | * * we honour the short vs long DFSR format differences. | |
12497 | * * the WnR bit is never set (the caller must do this). | |
f6bda88f | 12498 | * * for PSMAv5 based systems we don't bother to return a full FSR format |
702a9357 PM |
12499 | * value. |
12500 | * | |
12501 | * @env: CPUARMState | |
12502 | * @address: virtual address to get physical address for | |
12503 | * @access_type: 0 for read, 1 for write, 2 for execute | |
d3649702 | 12504 | * @mmu_idx: MMU index indicating required translation regime |
702a9357 | 12505 | * @phys_ptr: set to the physical address corresponding to the virtual address |
8bf5b6a9 | 12506 | * @attrs: set to the memory transaction attributes to use |
702a9357 PM |
12507 | * @prot: set to the permissions for the page containing phys_ptr |
12508 | * @page_size: set to the size of the page containing phys_ptr | |
5b2d261d AB |
12509 | * @fi: set to fault info if the translation fails |
12510 | * @cacheattrs: (if non-NULL) set to the cacheability/shareability attributes | |
702a9357 | 12511 | */ |
af51f566 | 12512 | static bool get_phys_addr(CPUARMState *env, target_ulong address, |
03ae85f8 | 12513 | MMUAccessType access_type, ARMMMUIdx mmu_idx, |
af51f566 | 12514 | hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot, |
bc52bfeb | 12515 | target_ulong *page_size, |
5b2d261d | 12516 | ARMMMUFaultInfo *fi, ARMCacheAttrs *cacheattrs) |
9ee6e8bb | 12517 | { |
0480f69a | 12518 | if (mmu_idx == ARMMMUIdx_S12NSE0 || mmu_idx == ARMMMUIdx_S12NSE1) { |
9b539263 EI |
12519 | /* Call ourselves recursively to do the stage 1 and then stage 2 |
12520 | * translations. | |
0480f69a | 12521 | */ |
9b539263 EI |
12522 | if (arm_feature(env, ARM_FEATURE_EL2)) { |
12523 | hwaddr ipa; | |
12524 | int s2_prot; | |
12525 | int ret; | |
5b2d261d | 12526 | ARMCacheAttrs cacheattrs2 = {}; |
9b539263 EI |
12527 | |
12528 | ret = get_phys_addr(env, address, access_type, | |
8bd5c820 | 12529 | stage_1_mmu_idx(mmu_idx), &ipa, attrs, |
bc52bfeb | 12530 | prot, page_size, fi, cacheattrs); |
9b539263 EI |
12531 | |
12532 | /* If S1 fails or S2 is disabled, return early. */ | |
12533 | if (ret || regime_translation_disabled(env, ARMMMUIdx_S2NS)) { | |
12534 | *phys_ptr = ipa; | |
12535 | return ret; | |
12536 | } | |
12537 | ||
12538 | /* S1 is done. Now do S2 translation. */ | |
12539 | ret = get_phys_addr_lpae(env, ipa, access_type, ARMMMUIdx_S2NS, | |
12540 | phys_ptr, attrs, &s2_prot, | |
da909b2c | 12541 | page_size, fi, |
5b2d261d | 12542 | cacheattrs != NULL ? &cacheattrs2 : NULL); |
9b539263 EI |
12543 | fi->s2addr = ipa; |
12544 | /* Combine the S1 and S2 perms. */ | |
12545 | *prot &= s2_prot; | |
5b2d261d AB |
12546 | |
12547 | /* Combine the S1 and S2 cache attributes, if needed */ | |
12548 | if (!ret && cacheattrs != NULL) { | |
9d1bab33 PM |
12549 | if (env->cp15.hcr_el2 & HCR_DC) { |
12550 | /* | |
12551 | * HCR.DC forces the first stage attributes to | |
12552 | * Normal Non-Shareable, | |
12553 | * Inner Write-Back Read-Allocate Write-Allocate, | |
12554 | * Outer Write-Back Read-Allocate Write-Allocate. | |
12555 | */ | |
12556 | cacheattrs->attrs = 0xff; | |
12557 | cacheattrs->shareability = 0; | |
12558 | } | |
5b2d261d AB |
12559 | *cacheattrs = combine_cacheattrs(*cacheattrs, cacheattrs2); |
12560 | } | |
12561 | ||
9b539263 EI |
12562 | return ret; |
12563 | } else { | |
12564 | /* | |
12565 | * For non-EL2 CPUs a stage1+stage2 translation is just stage 1. | |
12566 | */ | |
8bd5c820 | 12567 | mmu_idx = stage_1_mmu_idx(mmu_idx); |
9b539263 | 12568 | } |
0480f69a | 12569 | } |
d3649702 | 12570 | |
8bf5b6a9 PM |
12571 | /* The page table entries may downgrade secure to non-secure, but |
12572 | * cannot upgrade an non-secure translation regime's attributes | |
12573 | * to secure. | |
12574 | */ | |
12575 | attrs->secure = regime_is_secure(env, mmu_idx); | |
0995bf8c | 12576 | attrs->user = regime_is_user(env, mmu_idx); |
8bf5b6a9 | 12577 | |
0480f69a PM |
12578 | /* Fast Context Switch Extension. This doesn't exist at all in v8. |
12579 | * In v7 and earlier it affects all stage 1 translations. | |
12580 | */ | |
12581 | if (address < 0x02000000 && mmu_idx != ARMMMUIdx_S2NS | |
12582 | && !arm_feature(env, ARM_FEATURE_V8)) { | |
12583 | if (regime_el(env, mmu_idx) == 3) { | |
12584 | address += env->cp15.fcseidr_s; | |
12585 | } else { | |
12586 | address += env->cp15.fcseidr_ns; | |
12587 | } | |
54bf36ed | 12588 | } |
9ee6e8bb | 12589 | |
3279adb9 | 12590 | if (arm_feature(env, ARM_FEATURE_PMSA)) { |
c9f9f124 | 12591 | bool ret; |
f6bda88f | 12592 | *page_size = TARGET_PAGE_SIZE; |
3279adb9 | 12593 | |
504e3cc3 PM |
12594 | if (arm_feature(env, ARM_FEATURE_V8)) { |
12595 | /* PMSAv8 */ | |
12596 | ret = get_phys_addr_pmsav8(env, address, access_type, mmu_idx, | |
72042435 | 12597 | phys_ptr, attrs, prot, page_size, fi); |
504e3cc3 | 12598 | } else if (arm_feature(env, ARM_FEATURE_V7)) { |
3279adb9 PM |
12599 | /* PMSAv7 */ |
12600 | ret = get_phys_addr_pmsav7(env, address, access_type, mmu_idx, | |
e5e40999 | 12601 | phys_ptr, prot, page_size, fi); |
3279adb9 PM |
12602 | } else { |
12603 | /* Pre-v7 MPU */ | |
12604 | ret = get_phys_addr_pmsav5(env, address, access_type, mmu_idx, | |
53a4e5c5 | 12605 | phys_ptr, prot, fi); |
3279adb9 PM |
12606 | } |
12607 | qemu_log_mask(CPU_LOG_MMU, "PMSA MPU lookup for %s at 0x%08" PRIx32 | |
c9f9f124 | 12608 | " mmu_idx %u -> %s (prot %c%c%c)\n", |
709e4407 PM |
12609 | access_type == MMU_DATA_LOAD ? "reading" : |
12610 | (access_type == MMU_DATA_STORE ? "writing" : "execute"), | |
c9f9f124 MD |
12611 | (uint32_t)address, mmu_idx, |
12612 | ret ? "Miss" : "Hit", | |
12613 | *prot & PAGE_READ ? 'r' : '-', | |
12614 | *prot & PAGE_WRITE ? 'w' : '-', | |
12615 | *prot & PAGE_EXEC ? 'x' : '-'); | |
12616 | ||
12617 | return ret; | |
f6bda88f PC |
12618 | } |
12619 | ||
3279adb9 PM |
12620 | /* Definitely a real MMU, not an MPU */ |
12621 | ||
0480f69a | 12622 | if (regime_translation_disabled(env, mmu_idx)) { |
3279adb9 | 12623 | /* MMU disabled. */ |
9ee6e8bb | 12624 | *phys_ptr = address; |
3ad493fc | 12625 | *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
d4c430a8 | 12626 | *page_size = TARGET_PAGE_SIZE; |
9ee6e8bb | 12627 | return 0; |
0480f69a PM |
12628 | } |
12629 | ||
0480f69a | 12630 | if (regime_using_lpae_format(env, mmu_idx)) { |
bc52bfeb PM |
12631 | return get_phys_addr_lpae(env, address, access_type, mmu_idx, |
12632 | phys_ptr, attrs, prot, page_size, | |
12633 | fi, cacheattrs); | |
0480f69a | 12634 | } else if (regime_sctlr(env, mmu_idx) & SCTLR_XP) { |
bc52bfeb PM |
12635 | return get_phys_addr_v6(env, address, access_type, mmu_idx, |
12636 | phys_ptr, attrs, prot, page_size, fi); | |
9ee6e8bb | 12637 | } else { |
bc52bfeb | 12638 | return get_phys_addr_v5(env, address, access_type, mmu_idx, |
f989983e | 12639 | phys_ptr, prot, page_size, fi); |
9ee6e8bb PB |
12640 | } |
12641 | } | |
12642 | ||
0faea0c7 PM |
12643 | hwaddr arm_cpu_get_phys_page_attrs_debug(CPUState *cs, vaddr addr, |
12644 | MemTxAttrs *attrs) | |
b5ff1b31 | 12645 | { |
00b941e5 | 12646 | ARMCPU *cpu = ARM_CPU(cs); |
d3649702 | 12647 | CPUARMState *env = &cpu->env; |
a8170e5e | 12648 | hwaddr phys_addr; |
d4c430a8 | 12649 | target_ulong page_size; |
b5ff1b31 | 12650 | int prot; |
b7cc4e82 | 12651 | bool ret; |
e14b5a23 | 12652 | ARMMMUFaultInfo fi = {}; |
50494a27 | 12653 | ARMMMUIdx mmu_idx = arm_mmu_idx(env); |
b5ff1b31 | 12654 | |
0faea0c7 PM |
12655 | *attrs = (MemTxAttrs) {}; |
12656 | ||
8bd5c820 | 12657 | ret = get_phys_addr(env, addr, 0, mmu_idx, &phys_addr, |
bc52bfeb | 12658 | attrs, &prot, &page_size, &fi, NULL); |
b5ff1b31 | 12659 | |
b7cc4e82 | 12660 | if (ret) { |
b5ff1b31 | 12661 | return -1; |
00b941e5 | 12662 | } |
b5ff1b31 FB |
12663 | return phys_addr; |
12664 | } | |
12665 | ||
0ecb72a5 | 12666 | uint32_t HELPER(v7m_mrs)(CPUARMState *env, uint32_t reg) |
9ee6e8bb | 12667 | { |
58117c9b MD |
12668 | uint32_t mask; |
12669 | unsigned el = arm_current_el(env); | |
12670 | ||
12671 | /* First handle registers which unprivileged can read */ | |
12672 | ||
12673 | switch (reg) { | |
12674 | case 0 ... 7: /* xPSR sub-fields */ | |
12675 | mask = 0; | |
12676 | if ((reg & 1) && el) { | |
987ab45e | 12677 | mask |= XPSR_EXCP; /* IPSR (unpriv. reads as zero) */ |
58117c9b MD |
12678 | } |
12679 | if (!(reg & 4)) { | |
987ab45e | 12680 | mask |= XPSR_NZCV | XPSR_Q; /* APSR */ |
f1e2598c PM |
12681 | if (arm_feature(env, ARM_FEATURE_THUMB_DSP)) { |
12682 | mask |= XPSR_GE; | |
12683 | } | |
58117c9b MD |
12684 | } |
12685 | /* EPSR reads as zero */ | |
12686 | return xpsr_read(env) & mask; | |
12687 | break; | |
12688 | case 20: /* CONTROL */ | |
2e1c5bcd PM |
12689 | { |
12690 | uint32_t value = env->v7m.control[env->v7m.secure]; | |
12691 | if (!env->v7m.secure) { | |
12692 | /* SFPA is RAZ/WI from NS; FPCA is stored in the M_REG_S bank */ | |
12693 | value |= env->v7m.control[M_REG_S] & R_V7M_CONTROL_FPCA_MASK; | |
12694 | } | |
12695 | return value; | |
12696 | } | |
50f11062 PM |
12697 | case 0x94: /* CONTROL_NS */ |
12698 | /* We have to handle this here because unprivileged Secure code | |
12699 | * can read the NS CONTROL register. | |
12700 | */ | |
12701 | if (!env->v7m.secure) { | |
12702 | return 0; | |
12703 | } | |
2e1c5bcd PM |
12704 | return env->v7m.control[M_REG_NS] | |
12705 | (env->v7m.control[M_REG_S] & R_V7M_CONTROL_FPCA_MASK); | |
58117c9b MD |
12706 | } |
12707 | ||
12708 | if (el == 0) { | |
12709 | return 0; /* unprivileged reads others as zero */ | |
12710 | } | |
a47dddd7 | 12711 | |
50f11062 PM |
12712 | if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { |
12713 | switch (reg) { | |
12714 | case 0x88: /* MSP_NS */ | |
12715 | if (!env->v7m.secure) { | |
12716 | return 0; | |
12717 | } | |
12718 | return env->v7m.other_ss_msp; | |
12719 | case 0x89: /* PSP_NS */ | |
12720 | if (!env->v7m.secure) { | |
12721 | return 0; | |
12722 | } | |
12723 | return env->v7m.other_ss_psp; | |
57bb3156 PM |
12724 | case 0x8a: /* MSPLIM_NS */ |
12725 | if (!env->v7m.secure) { | |
12726 | return 0; | |
12727 | } | |
12728 | return env->v7m.msplim[M_REG_NS]; | |
12729 | case 0x8b: /* PSPLIM_NS */ | |
12730 | if (!env->v7m.secure) { | |
12731 | return 0; | |
12732 | } | |
12733 | return env->v7m.psplim[M_REG_NS]; | |
50f11062 PM |
12734 | case 0x90: /* PRIMASK_NS */ |
12735 | if (!env->v7m.secure) { | |
12736 | return 0; | |
12737 | } | |
12738 | return env->v7m.primask[M_REG_NS]; | |
12739 | case 0x91: /* BASEPRI_NS */ | |
12740 | if (!env->v7m.secure) { | |
12741 | return 0; | |
12742 | } | |
12743 | return env->v7m.basepri[M_REG_NS]; | |
12744 | case 0x93: /* FAULTMASK_NS */ | |
12745 | if (!env->v7m.secure) { | |
12746 | return 0; | |
12747 | } | |
12748 | return env->v7m.faultmask[M_REG_NS]; | |
12749 | case 0x98: /* SP_NS */ | |
12750 | { | |
12751 | /* This gives the non-secure SP selected based on whether we're | |
12752 | * currently in handler mode or not, using the NS CONTROL.SPSEL. | |
12753 | */ | |
12754 | bool spsel = env->v7m.control[M_REG_NS] & R_V7M_CONTROL_SPSEL_MASK; | |
12755 | ||
12756 | if (!env->v7m.secure) { | |
12757 | return 0; | |
12758 | } | |
12759 | if (!arm_v7m_is_handler_mode(env) && spsel) { | |
12760 | return env->v7m.other_ss_psp; | |
12761 | } else { | |
12762 | return env->v7m.other_ss_msp; | |
12763 | } | |
12764 | } | |
12765 | default: | |
12766 | break; | |
12767 | } | |
12768 | } | |
12769 | ||
9ee6e8bb | 12770 | switch (reg) { |
9ee6e8bb | 12771 | case 8: /* MSP */ |
1169d3aa | 12772 | return v7m_using_psp(env) ? env->v7m.other_sp : env->regs[13]; |
9ee6e8bb | 12773 | case 9: /* PSP */ |
1169d3aa | 12774 | return v7m_using_psp(env) ? env->regs[13] : env->v7m.other_sp; |
57bb3156 PM |
12775 | case 10: /* MSPLIM */ |
12776 | if (!arm_feature(env, ARM_FEATURE_V8)) { | |
12777 | goto bad_reg; | |
12778 | } | |
12779 | return env->v7m.msplim[env->v7m.secure]; | |
12780 | case 11: /* PSPLIM */ | |
12781 | if (!arm_feature(env, ARM_FEATURE_V8)) { | |
12782 | goto bad_reg; | |
12783 | } | |
12784 | return env->v7m.psplim[env->v7m.secure]; | |
9ee6e8bb | 12785 | case 16: /* PRIMASK */ |
6d804834 | 12786 | return env->v7m.primask[env->v7m.secure]; |
82845826 SH |
12787 | case 17: /* BASEPRI */ |
12788 | case 18: /* BASEPRI_MAX */ | |
acf94941 | 12789 | return env->v7m.basepri[env->v7m.secure]; |
82845826 | 12790 | case 19: /* FAULTMASK */ |
42a6686b | 12791 | return env->v7m.faultmask[env->v7m.secure]; |
9ee6e8bb | 12792 | default: |
57bb3156 | 12793 | bad_reg: |
58117c9b MD |
12794 | qemu_log_mask(LOG_GUEST_ERROR, "Attempt to read unknown special" |
12795 | " register %d\n", reg); | |
9ee6e8bb PB |
12796 | return 0; |
12797 | } | |
12798 | } | |
12799 | ||
b28b3377 PM |
12800 | void HELPER(v7m_msr)(CPUARMState *env, uint32_t maskreg, uint32_t val) |
12801 | { | |
12802 | /* We're passed bits [11..0] of the instruction; extract | |
12803 | * SYSm and the mask bits. | |
12804 | * Invalid combinations of SYSm and mask are UNPREDICTABLE; | |
12805 | * we choose to treat them as if the mask bits were valid. | |
12806 | * NB that the pseudocode 'mask' variable is bits [11..10], | |
12807 | * whereas ours is [11..8]. | |
12808 | */ | |
12809 | uint32_t mask = extract32(maskreg, 8, 4); | |
12810 | uint32_t reg = extract32(maskreg, 0, 8); | |
2e1c5bcd | 12811 | int cur_el = arm_current_el(env); |
b28b3377 | 12812 | |
2e1c5bcd PM |
12813 | if (cur_el == 0 && reg > 7 && reg != 20) { |
12814 | /* | |
12815 | * only xPSR sub-fields and CONTROL.SFPA may be written by | |
12816 | * unprivileged code | |
12817 | */ | |
58117c9b MD |
12818 | return; |
12819 | } | |
a47dddd7 | 12820 | |
50f11062 PM |
12821 | if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { |
12822 | switch (reg) { | |
12823 | case 0x88: /* MSP_NS */ | |
12824 | if (!env->v7m.secure) { | |
12825 | return; | |
12826 | } | |
12827 | env->v7m.other_ss_msp = val; | |
12828 | return; | |
12829 | case 0x89: /* PSP_NS */ | |
12830 | if (!env->v7m.secure) { | |
12831 | return; | |
12832 | } | |
12833 | env->v7m.other_ss_psp = val; | |
12834 | return; | |
57bb3156 PM |
12835 | case 0x8a: /* MSPLIM_NS */ |
12836 | if (!env->v7m.secure) { | |
12837 | return; | |
12838 | } | |
12839 | env->v7m.msplim[M_REG_NS] = val & ~7; | |
12840 | return; | |
12841 | case 0x8b: /* PSPLIM_NS */ | |
12842 | if (!env->v7m.secure) { | |
12843 | return; | |
12844 | } | |
12845 | env->v7m.psplim[M_REG_NS] = val & ~7; | |
12846 | return; | |
50f11062 PM |
12847 | case 0x90: /* PRIMASK_NS */ |
12848 | if (!env->v7m.secure) { | |
12849 | return; | |
12850 | } | |
12851 | env->v7m.primask[M_REG_NS] = val & 1; | |
12852 | return; | |
12853 | case 0x91: /* BASEPRI_NS */ | |
22ab3460 | 12854 | if (!env->v7m.secure || !arm_feature(env, ARM_FEATURE_M_MAIN)) { |
50f11062 PM |
12855 | return; |
12856 | } | |
12857 | env->v7m.basepri[M_REG_NS] = val & 0xff; | |
12858 | return; | |
12859 | case 0x93: /* FAULTMASK_NS */ | |
22ab3460 | 12860 | if (!env->v7m.secure || !arm_feature(env, ARM_FEATURE_M_MAIN)) { |
50f11062 PM |
12861 | return; |
12862 | } | |
12863 | env->v7m.faultmask[M_REG_NS] = val & 1; | |
12864 | return; | |
6eb3a64e PM |
12865 | case 0x94: /* CONTROL_NS */ |
12866 | if (!env->v7m.secure) { | |
12867 | return; | |
12868 | } | |
12869 | write_v7m_control_spsel_for_secstate(env, | |
12870 | val & R_V7M_CONTROL_SPSEL_MASK, | |
12871 | M_REG_NS); | |
def18344 JS |
12872 | if (arm_feature(env, ARM_FEATURE_M_MAIN)) { |
12873 | env->v7m.control[M_REG_NS] &= ~R_V7M_CONTROL_NPRIV_MASK; | |
12874 | env->v7m.control[M_REG_NS] |= val & R_V7M_CONTROL_NPRIV_MASK; | |
12875 | } | |
2e1c5bcd PM |
12876 | /* |
12877 | * SFPA is RAZ/WI from NS. FPCA is RO if NSACR.CP10 == 0, | |
12878 | * RES0 if the FPU is not present, and is stored in the S bank | |
12879 | */ | |
12880 | if (arm_feature(env, ARM_FEATURE_VFP) && | |
12881 | extract32(env->v7m.nsacr, 10, 1)) { | |
12882 | env->v7m.control[M_REG_S] &= ~R_V7M_CONTROL_FPCA_MASK; | |
12883 | env->v7m.control[M_REG_S] |= val & R_V7M_CONTROL_FPCA_MASK; | |
12884 | } | |
6eb3a64e | 12885 | return; |
50f11062 PM |
12886 | case 0x98: /* SP_NS */ |
12887 | { | |
12888 | /* This gives the non-secure SP selected based on whether we're | |
12889 | * currently in handler mode or not, using the NS CONTROL.SPSEL. | |
12890 | */ | |
12891 | bool spsel = env->v7m.control[M_REG_NS] & R_V7M_CONTROL_SPSEL_MASK; | |
167765f0 PM |
12892 | bool is_psp = !arm_v7m_is_handler_mode(env) && spsel; |
12893 | uint32_t limit; | |
50f11062 PM |
12894 | |
12895 | if (!env->v7m.secure) { | |
12896 | return; | |
12897 | } | |
167765f0 PM |
12898 | |
12899 | limit = is_psp ? env->v7m.psplim[false] : env->v7m.msplim[false]; | |
12900 | ||
12901 | if (val < limit) { | |
12902 | CPUState *cs = CPU(arm_env_get_cpu(env)); | |
12903 | ||
12904 | cpu_restore_state(cs, GETPC(), true); | |
12905 | raise_exception(env, EXCP_STKOF, 0, 1); | |
12906 | } | |
12907 | ||
12908 | if (is_psp) { | |
50f11062 PM |
12909 | env->v7m.other_ss_psp = val; |
12910 | } else { | |
12911 | env->v7m.other_ss_msp = val; | |
12912 | } | |
12913 | return; | |
12914 | } | |
12915 | default: | |
12916 | break; | |
12917 | } | |
12918 | } | |
12919 | ||
9ee6e8bb | 12920 | switch (reg) { |
58117c9b MD |
12921 | case 0 ... 7: /* xPSR sub-fields */ |
12922 | /* only APSR is actually writable */ | |
b28b3377 PM |
12923 | if (!(reg & 4)) { |
12924 | uint32_t apsrmask = 0; | |
12925 | ||
12926 | if (mask & 8) { | |
987ab45e | 12927 | apsrmask |= XPSR_NZCV | XPSR_Q; |
b28b3377 PM |
12928 | } |
12929 | if ((mask & 4) && arm_feature(env, ARM_FEATURE_THUMB_DSP)) { | |
987ab45e | 12930 | apsrmask |= XPSR_GE; |
b28b3377 PM |
12931 | } |
12932 | xpsr_write(env, val, apsrmask); | |
58117c9b | 12933 | } |
9ee6e8bb PB |
12934 | break; |
12935 | case 8: /* MSP */ | |
1169d3aa | 12936 | if (v7m_using_psp(env)) { |
9ee6e8bb | 12937 | env->v7m.other_sp = val; |
abc24d86 | 12938 | } else { |
9ee6e8bb | 12939 | env->regs[13] = val; |
abc24d86 | 12940 | } |
9ee6e8bb PB |
12941 | break; |
12942 | case 9: /* PSP */ | |
1169d3aa | 12943 | if (v7m_using_psp(env)) { |
9ee6e8bb | 12944 | env->regs[13] = val; |
abc24d86 | 12945 | } else { |
9ee6e8bb | 12946 | env->v7m.other_sp = val; |
abc24d86 | 12947 | } |
9ee6e8bb | 12948 | break; |
57bb3156 PM |
12949 | case 10: /* MSPLIM */ |
12950 | if (!arm_feature(env, ARM_FEATURE_V8)) { | |
12951 | goto bad_reg; | |
12952 | } | |
12953 | env->v7m.msplim[env->v7m.secure] = val & ~7; | |
12954 | break; | |
12955 | case 11: /* PSPLIM */ | |
12956 | if (!arm_feature(env, ARM_FEATURE_V8)) { | |
12957 | goto bad_reg; | |
12958 | } | |
12959 | env->v7m.psplim[env->v7m.secure] = val & ~7; | |
12960 | break; | |
9ee6e8bb | 12961 | case 16: /* PRIMASK */ |
6d804834 | 12962 | env->v7m.primask[env->v7m.secure] = val & 1; |
9ee6e8bb | 12963 | break; |
82845826 | 12964 | case 17: /* BASEPRI */ |
22ab3460 JS |
12965 | if (!arm_feature(env, ARM_FEATURE_M_MAIN)) { |
12966 | goto bad_reg; | |
12967 | } | |
acf94941 | 12968 | env->v7m.basepri[env->v7m.secure] = val & 0xff; |
9ee6e8bb | 12969 | break; |
82845826 | 12970 | case 18: /* BASEPRI_MAX */ |
22ab3460 JS |
12971 | if (!arm_feature(env, ARM_FEATURE_M_MAIN)) { |
12972 | goto bad_reg; | |
12973 | } | |
9ee6e8bb | 12974 | val &= 0xff; |
acf94941 PM |
12975 | if (val != 0 && (val < env->v7m.basepri[env->v7m.secure] |
12976 | || env->v7m.basepri[env->v7m.secure] == 0)) { | |
12977 | env->v7m.basepri[env->v7m.secure] = val; | |
12978 | } | |
9ee6e8bb | 12979 | break; |
82845826 | 12980 | case 19: /* FAULTMASK */ |
22ab3460 JS |
12981 | if (!arm_feature(env, ARM_FEATURE_M_MAIN)) { |
12982 | goto bad_reg; | |
12983 | } | |
42a6686b | 12984 | env->v7m.faultmask[env->v7m.secure] = val & 1; |
82845826 | 12985 | break; |
9ee6e8bb | 12986 | case 20: /* CONTROL */ |
2e1c5bcd PM |
12987 | /* |
12988 | * Writing to the SPSEL bit only has an effect if we are in | |
792dac30 | 12989 | * thread mode; other bits can be updated by any privileged code. |
de2db7ec | 12990 | * write_v7m_control_spsel() deals with updating the SPSEL bit in |
792dac30 | 12991 | * env->v7m.control, so we only need update the others. |
83d7f86d PM |
12992 | * For v7M, we must just ignore explicit writes to SPSEL in handler |
12993 | * mode; for v8M the write is permitted but will have no effect. | |
2e1c5bcd PM |
12994 | * All these bits are writes-ignored from non-privileged code, |
12995 | * except for SFPA. | |
792dac30 | 12996 | */ |
2e1c5bcd PM |
12997 | if (cur_el > 0 && (arm_feature(env, ARM_FEATURE_V8) || |
12998 | !arm_v7m_is_handler_mode(env))) { | |
de2db7ec | 12999 | write_v7m_control_spsel(env, (val & R_V7M_CONTROL_SPSEL_MASK) != 0); |
792dac30 | 13000 | } |
2e1c5bcd | 13001 | if (cur_el > 0 && arm_feature(env, ARM_FEATURE_M_MAIN)) { |
def18344 JS |
13002 | env->v7m.control[env->v7m.secure] &= ~R_V7M_CONTROL_NPRIV_MASK; |
13003 | env->v7m.control[env->v7m.secure] |= val & R_V7M_CONTROL_NPRIV_MASK; | |
13004 | } | |
2e1c5bcd PM |
13005 | if (arm_feature(env, ARM_FEATURE_VFP)) { |
13006 | /* | |
13007 | * SFPA is RAZ/WI from NS or if no FPU. | |
13008 | * FPCA is RO if NSACR.CP10 == 0, RES0 if the FPU is not present. | |
13009 | * Both are stored in the S bank. | |
13010 | */ | |
13011 | if (env->v7m.secure) { | |
13012 | env->v7m.control[M_REG_S] &= ~R_V7M_CONTROL_SFPA_MASK; | |
13013 | env->v7m.control[M_REG_S] |= val & R_V7M_CONTROL_SFPA_MASK; | |
13014 | } | |
13015 | if (cur_el > 0 && | |
13016 | (env->v7m.secure || !arm_feature(env, ARM_FEATURE_M_SECURITY) || | |
13017 | extract32(env->v7m.nsacr, 10, 1))) { | |
13018 | env->v7m.control[M_REG_S] &= ~R_V7M_CONTROL_FPCA_MASK; | |
13019 | env->v7m.control[M_REG_S] |= val & R_V7M_CONTROL_FPCA_MASK; | |
13020 | } | |
13021 | } | |
9ee6e8bb PB |
13022 | break; |
13023 | default: | |
57bb3156 | 13024 | bad_reg: |
58117c9b MD |
13025 | qemu_log_mask(LOG_GUEST_ERROR, "Attempt to write unknown special" |
13026 | " register %d\n", reg); | |
9ee6e8bb PB |
13027 | return; |
13028 | } | |
13029 | } | |
13030 | ||
5158de24 PM |
13031 | uint32_t HELPER(v7m_tt)(CPUARMState *env, uint32_t addr, uint32_t op) |
13032 | { | |
13033 | /* Implement the TT instruction. op is bits [7:6] of the insn. */ | |
13034 | bool forceunpriv = op & 1; | |
13035 | bool alt = op & 2; | |
13036 | V8M_SAttributes sattrs = {}; | |
13037 | uint32_t tt_resp; | |
13038 | bool r, rw, nsr, nsrw, mrvalid; | |
13039 | int prot; | |
3f551b5b | 13040 | ARMMMUFaultInfo fi = {}; |
5158de24 PM |
13041 | MemTxAttrs attrs = {}; |
13042 | hwaddr phys_addr; | |
5158de24 PM |
13043 | ARMMMUIdx mmu_idx; |
13044 | uint32_t mregion; | |
13045 | bool targetpriv; | |
13046 | bool targetsec = env->v7m.secure; | |
72042435 | 13047 | bool is_subpage; |
5158de24 PM |
13048 | |
13049 | /* Work out what the security state and privilege level we're | |
13050 | * interested in is... | |
13051 | */ | |
13052 | if (alt) { | |
13053 | targetsec = !targetsec; | |
13054 | } | |
13055 | ||
13056 | if (forceunpriv) { | |
13057 | targetpriv = false; | |
13058 | } else { | |
13059 | targetpriv = arm_v7m_is_handler_mode(env) || | |
13060 | !(env->v7m.control[targetsec] & R_V7M_CONTROL_NPRIV_MASK); | |
13061 | } | |
13062 | ||
13063 | /* ...and then figure out which MMU index this is */ | |
13064 | mmu_idx = arm_v7m_mmu_idx_for_secstate_and_priv(env, targetsec, targetpriv); | |
13065 | ||
13066 | /* We know that the MPU and SAU don't care about the access type | |
13067 | * for our purposes beyond that we don't want to claim to be | |
13068 | * an insn fetch, so we arbitrarily call this a read. | |
13069 | */ | |
13070 | ||
13071 | /* MPU region info only available for privileged or if | |
13072 | * inspecting the other MPU state. | |
13073 | */ | |
13074 | if (arm_current_el(env) != 0 || alt) { | |
13075 | /* We can ignore the return value as prot is always set */ | |
13076 | pmsav8_mpu_lookup(env, addr, MMU_DATA_LOAD, mmu_idx, | |
72042435 PM |
13077 | &phys_addr, &attrs, &prot, &is_subpage, |
13078 | &fi, &mregion); | |
5158de24 PM |
13079 | if (mregion == -1) { |
13080 | mrvalid = false; | |
13081 | mregion = 0; | |
13082 | } else { | |
13083 | mrvalid = true; | |
13084 | } | |
13085 | r = prot & PAGE_READ; | |
13086 | rw = prot & PAGE_WRITE; | |
13087 | } else { | |
13088 | r = false; | |
13089 | rw = false; | |
13090 | mrvalid = false; | |
13091 | mregion = 0; | |
13092 | } | |
13093 | ||
13094 | if (env->v7m.secure) { | |
13095 | v8m_security_lookup(env, addr, MMU_DATA_LOAD, mmu_idx, &sattrs); | |
13096 | nsr = sattrs.ns && r; | |
13097 | nsrw = sattrs.ns && rw; | |
13098 | } else { | |
13099 | sattrs.ns = true; | |
13100 | nsr = false; | |
13101 | nsrw = false; | |
13102 | } | |
13103 | ||
13104 | tt_resp = (sattrs.iregion << 24) | | |
13105 | (sattrs.irvalid << 23) | | |
13106 | ((!sattrs.ns) << 22) | | |
13107 | (nsrw << 21) | | |
13108 | (nsr << 20) | | |
13109 | (rw << 19) | | |
13110 | (r << 18) | | |
13111 | (sattrs.srvalid << 17) | | |
13112 | (mrvalid << 16) | | |
13113 | (sattrs.sregion << 8) | | |
13114 | mregion; | |
13115 | ||
13116 | return tt_resp; | |
13117 | } | |
13118 | ||
b5ff1b31 | 13119 | #endif |
6ddbc6e4 | 13120 | |
7350d553 RH |
13121 | bool arm_cpu_tlb_fill(CPUState *cs, vaddr address, int size, |
13122 | MMUAccessType access_type, int mmu_idx, | |
13123 | bool probe, uintptr_t retaddr) | |
13124 | { | |
13125 | ARMCPU *cpu = ARM_CPU(cs); | |
13126 | ||
13127 | #ifdef CONFIG_USER_ONLY | |
13128 | cpu->env.exception.vaddress = address; | |
13129 | if (access_type == MMU_INST_FETCH) { | |
13130 | cs->exception_index = EXCP_PREFETCH_ABORT; | |
13131 | } else { | |
13132 | cs->exception_index = EXCP_DATA_ABORT; | |
13133 | } | |
13134 | cpu_loop_exit_restore(cs, retaddr); | |
13135 | #else | |
13136 | hwaddr phys_addr; | |
13137 | target_ulong page_size; | |
13138 | int prot, ret; | |
13139 | MemTxAttrs attrs = {}; | |
13140 | ARMMMUFaultInfo fi = {}; | |
13141 | ||
13142 | /* | |
13143 | * Walk the page table and (if the mapping exists) add the page | |
13144 | * to the TLB. On success, return true. Otherwise, if probing, | |
13145 | * return false. Otherwise populate fsr with ARM DFSR/IFSR fault | |
13146 | * register format, and signal the fault. | |
13147 | */ | |
13148 | ret = get_phys_addr(&cpu->env, address, access_type, | |
13149 | core_to_arm_mmu_idx(&cpu->env, mmu_idx), | |
13150 | &phys_addr, &attrs, &prot, &page_size, &fi, NULL); | |
13151 | if (likely(!ret)) { | |
13152 | /* | |
13153 | * Map a single [sub]page. Regions smaller than our declared | |
13154 | * target page size are handled specially, so for those we | |
13155 | * pass in the exact addresses. | |
13156 | */ | |
13157 | if (page_size >= TARGET_PAGE_SIZE) { | |
13158 | phys_addr &= TARGET_PAGE_MASK; | |
13159 | address &= TARGET_PAGE_MASK; | |
13160 | } | |
13161 | tlb_set_page_with_attrs(cs, address, phys_addr, attrs, | |
13162 | prot, mmu_idx, page_size); | |
13163 | return true; | |
13164 | } else if (probe) { | |
13165 | return false; | |
13166 | } else { | |
13167 | /* now we have a real cpu fault */ | |
13168 | cpu_restore_state(cs, retaddr, true); | |
13169 | arm_deliver_fault(cpu, address, access_type, mmu_idx, &fi); | |
13170 | } | |
13171 | #endif | |
13172 | } | |
13173 | ||
aca3f40b PM |
13174 | void HELPER(dc_zva)(CPUARMState *env, uint64_t vaddr_in) |
13175 | { | |
13176 | /* Implement DC ZVA, which zeroes a fixed-length block of memory. | |
13177 | * Note that we do not implement the (architecturally mandated) | |
13178 | * alignment fault for attempts to use this on Device memory | |
13179 | * (which matches the usual QEMU behaviour of not implementing either | |
13180 | * alignment faults or any memory attribute handling). | |
13181 | */ | |
13182 | ||
13183 | ARMCPU *cpu = arm_env_get_cpu(env); | |
13184 | uint64_t blocklen = 4 << cpu->dcz_blocksize; | |
13185 | uint64_t vaddr = vaddr_in & ~(blocklen - 1); | |
13186 | ||
13187 | #ifndef CONFIG_USER_ONLY | |
13188 | { | |
13189 | /* Slightly awkwardly, QEMU's TARGET_PAGE_SIZE may be less than | |
13190 | * the block size so we might have to do more than one TLB lookup. | |
13191 | * We know that in fact for any v8 CPU the page size is at least 4K | |
13192 | * and the block size must be 2K or less, but TARGET_PAGE_SIZE is only | |
13193 | * 1K as an artefact of legacy v5 subpage support being present in the | |
63159601 PM |
13194 | * same QEMU executable. So in practice the hostaddr[] array has |
13195 | * two entries, given the current setting of TARGET_PAGE_BITS_MIN. | |
aca3f40b PM |
13196 | */ |
13197 | int maxidx = DIV_ROUND_UP(blocklen, TARGET_PAGE_SIZE); | |
63159601 | 13198 | void *hostaddr[DIV_ROUND_UP(2 * KiB, 1 << TARGET_PAGE_BITS_MIN)]; |
aca3f40b | 13199 | int try, i; |
97ed5ccd | 13200 | unsigned mmu_idx = cpu_mmu_index(env, false); |
3972ef6f | 13201 | TCGMemOpIdx oi = make_memop_idx(MO_UB, mmu_idx); |
aca3f40b | 13202 | |
63159601 PM |
13203 | assert(maxidx <= ARRAY_SIZE(hostaddr)); |
13204 | ||
aca3f40b PM |
13205 | for (try = 0; try < 2; try++) { |
13206 | ||
13207 | for (i = 0; i < maxidx; i++) { | |
13208 | hostaddr[i] = tlb_vaddr_to_host(env, | |
13209 | vaddr + TARGET_PAGE_SIZE * i, | |
3972ef6f | 13210 | 1, mmu_idx); |
aca3f40b PM |
13211 | if (!hostaddr[i]) { |
13212 | break; | |
13213 | } | |
13214 | } | |
13215 | if (i == maxidx) { | |
13216 | /* If it's all in the TLB it's fair game for just writing to; | |
13217 | * we know we don't need to update dirty status, etc. | |
13218 | */ | |
13219 | for (i = 0; i < maxidx - 1; i++) { | |
13220 | memset(hostaddr[i], 0, TARGET_PAGE_SIZE); | |
13221 | } | |
13222 | memset(hostaddr[i], 0, blocklen - (i * TARGET_PAGE_SIZE)); | |
13223 | return; | |
13224 | } | |
13225 | /* OK, try a store and see if we can populate the tlb. This | |
13226 | * might cause an exception if the memory isn't writable, | |
13227 | * in which case we will longjmp out of here. We must for | |
13228 | * this purpose use the actual register value passed to us | |
13229 | * so that we get the fault address right. | |
13230 | */ | |
01ecaf43 | 13231 | helper_ret_stb_mmu(env, vaddr_in, 0, oi, GETPC()); |
aca3f40b PM |
13232 | /* Now we can populate the other TLB entries, if any */ |
13233 | for (i = 0; i < maxidx; i++) { | |
13234 | uint64_t va = vaddr + TARGET_PAGE_SIZE * i; | |
13235 | if (va != (vaddr_in & TARGET_PAGE_MASK)) { | |
01ecaf43 | 13236 | helper_ret_stb_mmu(env, va, 0, oi, GETPC()); |
aca3f40b PM |
13237 | } |
13238 | } | |
13239 | } | |
13240 | ||
13241 | /* Slow path (probably attempt to do this to an I/O device or | |
13242 | * similar, or clearing of a block of code we have translations | |
13243 | * cached for). Just do a series of byte writes as the architecture | |
13244 | * demands. It's not worth trying to use a cpu_physical_memory_map(), | |
13245 | * memset(), unmap() sequence here because: | |
13246 | * + we'd need to account for the blocksize being larger than a page | |
13247 | * + the direct-RAM access case is almost always going to be dealt | |
13248 | * with in the fastpath code above, so there's no speed benefit | |
13249 | * + we would have to deal with the map returning NULL because the | |
13250 | * bounce buffer was in use | |
13251 | */ | |
13252 | for (i = 0; i < blocklen; i++) { | |
01ecaf43 | 13253 | helper_ret_stb_mmu(env, vaddr + i, 0, oi, GETPC()); |
aca3f40b PM |
13254 | } |
13255 | } | |
13256 | #else | |
13257 | memset(g2h(vaddr), 0, blocklen); | |
13258 | #endif | |
13259 | } | |
13260 | ||
6ddbc6e4 PB |
13261 | /* Note that signed overflow is undefined in C. The following routines are |
13262 | careful to use unsigned types where modulo arithmetic is required. | |
13263 | Failure to do so _will_ break on newer gcc. */ | |
13264 | ||
13265 | /* Signed saturating arithmetic. */ | |
13266 | ||
1654b2d6 | 13267 | /* Perform 16-bit signed saturating addition. */ |
6ddbc6e4 PB |
13268 | static inline uint16_t add16_sat(uint16_t a, uint16_t b) |
13269 | { | |
13270 | uint16_t res; | |
13271 | ||
13272 | res = a + b; | |
13273 | if (((res ^ a) & 0x8000) && !((a ^ b) & 0x8000)) { | |
13274 | if (a & 0x8000) | |
13275 | res = 0x8000; | |
13276 | else | |
13277 | res = 0x7fff; | |
13278 | } | |
13279 | return res; | |
13280 | } | |
13281 | ||
1654b2d6 | 13282 | /* Perform 8-bit signed saturating addition. */ |
6ddbc6e4 PB |
13283 | static inline uint8_t add8_sat(uint8_t a, uint8_t b) |
13284 | { | |
13285 | uint8_t res; | |
13286 | ||
13287 | res = a + b; | |
13288 | if (((res ^ a) & 0x80) && !((a ^ b) & 0x80)) { | |
13289 | if (a & 0x80) | |
13290 | res = 0x80; | |
13291 | else | |
13292 | res = 0x7f; | |
13293 | } | |
13294 | return res; | |
13295 | } | |
13296 | ||
1654b2d6 | 13297 | /* Perform 16-bit signed saturating subtraction. */ |
6ddbc6e4 PB |
13298 | static inline uint16_t sub16_sat(uint16_t a, uint16_t b) |
13299 | { | |
13300 | uint16_t res; | |
13301 | ||
13302 | res = a - b; | |
13303 | if (((res ^ a) & 0x8000) && ((a ^ b) & 0x8000)) { | |
13304 | if (a & 0x8000) | |
13305 | res = 0x8000; | |
13306 | else | |
13307 | res = 0x7fff; | |
13308 | } | |
13309 | return res; | |
13310 | } | |
13311 | ||
1654b2d6 | 13312 | /* Perform 8-bit signed saturating subtraction. */ |
6ddbc6e4 PB |
13313 | static inline uint8_t sub8_sat(uint8_t a, uint8_t b) |
13314 | { | |
13315 | uint8_t res; | |
13316 | ||
13317 | res = a - b; | |
13318 | if (((res ^ a) & 0x80) && ((a ^ b) & 0x80)) { | |
13319 | if (a & 0x80) | |
13320 | res = 0x80; | |
13321 | else | |
13322 | res = 0x7f; | |
13323 | } | |
13324 | return res; | |
13325 | } | |
13326 | ||
13327 | #define ADD16(a, b, n) RESULT(add16_sat(a, b), n, 16); | |
13328 | #define SUB16(a, b, n) RESULT(sub16_sat(a, b), n, 16); | |
13329 | #define ADD8(a, b, n) RESULT(add8_sat(a, b), n, 8); | |
13330 | #define SUB8(a, b, n) RESULT(sub8_sat(a, b), n, 8); | |
13331 | #define PFX q | |
13332 | ||
13333 | #include "op_addsub.h" | |
13334 | ||
13335 | /* Unsigned saturating arithmetic. */ | |
460a09c1 | 13336 | static inline uint16_t add16_usat(uint16_t a, uint16_t b) |
6ddbc6e4 PB |
13337 | { |
13338 | uint16_t res; | |
13339 | res = a + b; | |
13340 | if (res < a) | |
13341 | res = 0xffff; | |
13342 | return res; | |
13343 | } | |
13344 | ||
460a09c1 | 13345 | static inline uint16_t sub16_usat(uint16_t a, uint16_t b) |
6ddbc6e4 | 13346 | { |
4c4fd3f8 | 13347 | if (a > b) |
6ddbc6e4 PB |
13348 | return a - b; |
13349 | else | |
13350 | return 0; | |
13351 | } | |
13352 | ||
13353 | static inline uint8_t add8_usat(uint8_t a, uint8_t b) | |
13354 | { | |
13355 | uint8_t res; | |
13356 | res = a + b; | |
13357 | if (res < a) | |
13358 | res = 0xff; | |
13359 | return res; | |
13360 | } | |
13361 | ||
13362 | static inline uint8_t sub8_usat(uint8_t a, uint8_t b) | |
13363 | { | |
4c4fd3f8 | 13364 | if (a > b) |
6ddbc6e4 PB |
13365 | return a - b; |
13366 | else | |
13367 | return 0; | |
13368 | } | |
13369 | ||
13370 | #define ADD16(a, b, n) RESULT(add16_usat(a, b), n, 16); | |
13371 | #define SUB16(a, b, n) RESULT(sub16_usat(a, b), n, 16); | |
13372 | #define ADD8(a, b, n) RESULT(add8_usat(a, b), n, 8); | |
13373 | #define SUB8(a, b, n) RESULT(sub8_usat(a, b), n, 8); | |
13374 | #define PFX uq | |
13375 | ||
13376 | #include "op_addsub.h" | |
13377 | ||
13378 | /* Signed modulo arithmetic. */ | |
13379 | #define SARITH16(a, b, n, op) do { \ | |
13380 | int32_t sum; \ | |
db6e2e65 | 13381 | sum = (int32_t)(int16_t)(a) op (int32_t)(int16_t)(b); \ |
6ddbc6e4 PB |
13382 | RESULT(sum, n, 16); \ |
13383 | if (sum >= 0) \ | |
13384 | ge |= 3 << (n * 2); \ | |
13385 | } while(0) | |
13386 | ||
13387 | #define SARITH8(a, b, n, op) do { \ | |
13388 | int32_t sum; \ | |
db6e2e65 | 13389 | sum = (int32_t)(int8_t)(a) op (int32_t)(int8_t)(b); \ |
6ddbc6e4 PB |
13390 | RESULT(sum, n, 8); \ |
13391 | if (sum >= 0) \ | |
13392 | ge |= 1 << n; \ | |
13393 | } while(0) | |
13394 | ||
13395 | ||
13396 | #define ADD16(a, b, n) SARITH16(a, b, n, +) | |
13397 | #define SUB16(a, b, n) SARITH16(a, b, n, -) | |
13398 | #define ADD8(a, b, n) SARITH8(a, b, n, +) | |
13399 | #define SUB8(a, b, n) SARITH8(a, b, n, -) | |
13400 | #define PFX s | |
13401 | #define ARITH_GE | |
13402 | ||
13403 | #include "op_addsub.h" | |
13404 | ||
13405 | /* Unsigned modulo arithmetic. */ | |
13406 | #define ADD16(a, b, n) do { \ | |
13407 | uint32_t sum; \ | |
13408 | sum = (uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b); \ | |
13409 | RESULT(sum, n, 16); \ | |
a87aa10b | 13410 | if ((sum >> 16) == 1) \ |
6ddbc6e4 PB |
13411 | ge |= 3 << (n * 2); \ |
13412 | } while(0) | |
13413 | ||
13414 | #define ADD8(a, b, n) do { \ | |
13415 | uint32_t sum; \ | |
13416 | sum = (uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b); \ | |
13417 | RESULT(sum, n, 8); \ | |
a87aa10b AZ |
13418 | if ((sum >> 8) == 1) \ |
13419 | ge |= 1 << n; \ | |
6ddbc6e4 PB |
13420 | } while(0) |
13421 | ||
13422 | #define SUB16(a, b, n) do { \ | |
13423 | uint32_t sum; \ | |
13424 | sum = (uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b); \ | |
13425 | RESULT(sum, n, 16); \ | |
13426 | if ((sum >> 16) == 0) \ | |
13427 | ge |= 3 << (n * 2); \ | |
13428 | } while(0) | |
13429 | ||
13430 | #define SUB8(a, b, n) do { \ | |
13431 | uint32_t sum; \ | |
13432 | sum = (uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b); \ | |
13433 | RESULT(sum, n, 8); \ | |
13434 | if ((sum >> 8) == 0) \ | |
a87aa10b | 13435 | ge |= 1 << n; \ |
6ddbc6e4 PB |
13436 | } while(0) |
13437 | ||
13438 | #define PFX u | |
13439 | #define ARITH_GE | |
13440 | ||
13441 | #include "op_addsub.h" | |
13442 | ||
13443 | /* Halved signed arithmetic. */ | |
13444 | #define ADD16(a, b, n) \ | |
13445 | RESULT(((int32_t)(int16_t)(a) + (int32_t)(int16_t)(b)) >> 1, n, 16) | |
13446 | #define SUB16(a, b, n) \ | |
13447 | RESULT(((int32_t)(int16_t)(a) - (int32_t)(int16_t)(b)) >> 1, n, 16) | |
13448 | #define ADD8(a, b, n) \ | |
13449 | RESULT(((int32_t)(int8_t)(a) + (int32_t)(int8_t)(b)) >> 1, n, 8) | |
13450 | #define SUB8(a, b, n) \ | |
13451 | RESULT(((int32_t)(int8_t)(a) - (int32_t)(int8_t)(b)) >> 1, n, 8) | |
13452 | #define PFX sh | |
13453 | ||
13454 | #include "op_addsub.h" | |
13455 | ||
13456 | /* Halved unsigned arithmetic. */ | |
13457 | #define ADD16(a, b, n) \ | |
13458 | RESULT(((uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b)) >> 1, n, 16) | |
13459 | #define SUB16(a, b, n) \ | |
13460 | RESULT(((uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b)) >> 1, n, 16) | |
13461 | #define ADD8(a, b, n) \ | |
13462 | RESULT(((uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b)) >> 1, n, 8) | |
13463 | #define SUB8(a, b, n) \ | |
13464 | RESULT(((uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b)) >> 1, n, 8) | |
13465 | #define PFX uh | |
13466 | ||
13467 | #include "op_addsub.h" | |
13468 | ||
13469 | static inline uint8_t do_usad(uint8_t a, uint8_t b) | |
13470 | { | |
13471 | if (a > b) | |
13472 | return a - b; | |
13473 | else | |
13474 | return b - a; | |
13475 | } | |
13476 | ||
13477 | /* Unsigned sum of absolute byte differences. */ | |
13478 | uint32_t HELPER(usad8)(uint32_t a, uint32_t b) | |
13479 | { | |
13480 | uint32_t sum; | |
13481 | sum = do_usad(a, b); | |
13482 | sum += do_usad(a >> 8, b >> 8); | |
13483 | sum += do_usad(a >> 16, b >>16); | |
13484 | sum += do_usad(a >> 24, b >> 24); | |
13485 | return sum; | |
13486 | } | |
13487 | ||
13488 | /* For ARMv6 SEL instruction. */ | |
13489 | uint32_t HELPER(sel_flags)(uint32_t flags, uint32_t a, uint32_t b) | |
13490 | { | |
13491 | uint32_t mask; | |
13492 | ||
13493 | mask = 0; | |
13494 | if (flags & 1) | |
13495 | mask |= 0xff; | |
13496 | if (flags & 2) | |
13497 | mask |= 0xff00; | |
13498 | if (flags & 4) | |
13499 | mask |= 0xff0000; | |
13500 | if (flags & 8) | |
13501 | mask |= 0xff000000; | |
13502 | return (a & mask) | (b & ~mask); | |
13503 | } | |
13504 | ||
aa633469 PM |
13505 | /* CRC helpers. |
13506 | * The upper bytes of val (above the number specified by 'bytes') must have | |
13507 | * been zeroed out by the caller. | |
13508 | */ | |
eb0ecd5a WN |
13509 | uint32_t HELPER(crc32)(uint32_t acc, uint32_t val, uint32_t bytes) |
13510 | { | |
13511 | uint8_t buf[4]; | |
13512 | ||
aa633469 | 13513 | stl_le_p(buf, val); |
eb0ecd5a WN |
13514 | |
13515 | /* zlib crc32 converts the accumulator and output to one's complement. */ | |
13516 | return crc32(acc ^ 0xffffffff, buf, bytes) ^ 0xffffffff; | |
13517 | } | |
13518 | ||
13519 | uint32_t HELPER(crc32c)(uint32_t acc, uint32_t val, uint32_t bytes) | |
13520 | { | |
13521 | uint8_t buf[4]; | |
13522 | ||
aa633469 | 13523 | stl_le_p(buf, val); |
eb0ecd5a WN |
13524 | |
13525 | /* Linux crc32c converts the output to one's complement. */ | |
13526 | return crc32c(acc, buf, bytes) ^ 0xffffffff; | |
13527 | } | |
a9e01311 RH |
13528 | |
13529 | /* Return the exception level to which FP-disabled exceptions should | |
13530 | * be taken, or 0 if FP is enabled. | |
13531 | */ | |
ced31551 | 13532 | int fp_exception_el(CPUARMState *env, int cur_el) |
a9e01311 | 13533 | { |
55faa212 | 13534 | #ifndef CONFIG_USER_ONLY |
a9e01311 | 13535 | int fpen; |
a9e01311 RH |
13536 | |
13537 | /* CPACR and the CPTR registers don't exist before v6, so FP is | |
13538 | * always accessible | |
13539 | */ | |
13540 | if (!arm_feature(env, ARM_FEATURE_V6)) { | |
13541 | return 0; | |
13542 | } | |
13543 | ||
d87513c0 PM |
13544 | if (arm_feature(env, ARM_FEATURE_M)) { |
13545 | /* CPACR can cause a NOCP UsageFault taken to current security state */ | |
13546 | if (!v7m_cpacr_pass(env, env->v7m.secure, cur_el != 0)) { | |
13547 | return 1; | |
13548 | } | |
13549 | ||
13550 | if (arm_feature(env, ARM_FEATURE_M_SECURITY) && !env->v7m.secure) { | |
13551 | if (!extract32(env->v7m.nsacr, 10, 1)) { | |
13552 | /* FP insns cause a NOCP UsageFault taken to Secure */ | |
13553 | return 3; | |
13554 | } | |
13555 | } | |
13556 | ||
13557 | return 0; | |
13558 | } | |
13559 | ||
a9e01311 RH |
13560 | /* The CPACR controls traps to EL1, or PL1 if we're 32 bit: |
13561 | * 0, 2 : trap EL0 and EL1/PL1 accesses | |
13562 | * 1 : trap only EL0 accesses | |
13563 | * 3 : trap no accesses | |
13564 | */ | |
13565 | fpen = extract32(env->cp15.cpacr_el1, 20, 2); | |
13566 | switch (fpen) { | |
13567 | case 0: | |
13568 | case 2: | |
13569 | if (cur_el == 0 || cur_el == 1) { | |
13570 | /* Trap to PL1, which might be EL1 or EL3 */ | |
13571 | if (arm_is_secure(env) && !arm_el_is_aa64(env, 3)) { | |
13572 | return 3; | |
13573 | } | |
13574 | return 1; | |
13575 | } | |
13576 | if (cur_el == 3 && !is_a64(env)) { | |
13577 | /* Secure PL1 running at EL3 */ | |
13578 | return 3; | |
13579 | } | |
13580 | break; | |
13581 | case 1: | |
13582 | if (cur_el == 0) { | |
13583 | return 1; | |
13584 | } | |
13585 | break; | |
13586 | case 3: | |
13587 | break; | |
13588 | } | |
13589 | ||
13590 | /* For the CPTR registers we don't need to guard with an ARM_FEATURE | |
13591 | * check because zero bits in the registers mean "don't trap". | |
13592 | */ | |
13593 | ||
13594 | /* CPTR_EL2 : present in v7VE or v8 */ | |
13595 | if (cur_el <= 2 && extract32(env->cp15.cptr_el[2], 10, 1) | |
13596 | && !arm_is_secure_below_el3(env)) { | |
13597 | /* Trap FP ops at EL2, NS-EL1 or NS-EL0 to EL2 */ | |
13598 | return 2; | |
13599 | } | |
13600 | ||
13601 | /* CPTR_EL3 : present in v8 */ | |
13602 | if (extract32(env->cp15.cptr_el[3], 10, 1)) { | |
13603 | /* Trap all FP ops to EL3 */ | |
13604 | return 3; | |
13605 | } | |
55faa212 | 13606 | #endif |
a9e01311 RH |
13607 | return 0; |
13608 | } | |
13609 | ||
fa6252a9 PM |
13610 | ARMMMUIdx arm_v7m_mmu_idx_all(CPUARMState *env, |
13611 | bool secstate, bool priv, bool negpri) | |
65e4655c RH |
13612 | { |
13613 | ARMMMUIdx mmu_idx = ARM_MMU_IDX_M; | |
13614 | ||
13615 | if (priv) { | |
13616 | mmu_idx |= ARM_MMU_IDX_M_PRIV; | |
13617 | } | |
13618 | ||
fa6252a9 | 13619 | if (negpri) { |
65e4655c RH |
13620 | mmu_idx |= ARM_MMU_IDX_M_NEGPRI; |
13621 | } | |
13622 | ||
13623 | if (secstate) { | |
13624 | mmu_idx |= ARM_MMU_IDX_M_S; | |
13625 | } | |
13626 | ||
13627 | return mmu_idx; | |
13628 | } | |
13629 | ||
fa6252a9 PM |
13630 | ARMMMUIdx arm_v7m_mmu_idx_for_secstate_and_priv(CPUARMState *env, |
13631 | bool secstate, bool priv) | |
13632 | { | |
13633 | bool negpri = armv7m_nvic_neg_prio_requested(env->nvic, secstate); | |
13634 | ||
13635 | return arm_v7m_mmu_idx_all(env, secstate, priv, negpri); | |
13636 | } | |
13637 | ||
65e4655c RH |
13638 | /* Return the MMU index for a v7M CPU in the specified security state */ |
13639 | ARMMMUIdx arm_v7m_mmu_idx_for_secstate(CPUARMState *env, bool secstate) | |
13640 | { | |
13641 | bool priv = arm_current_el(env) != 0; | |
13642 | ||
13643 | return arm_v7m_mmu_idx_for_secstate_and_priv(env, secstate, priv); | |
13644 | } | |
13645 | ||
50494a27 | 13646 | ARMMMUIdx arm_mmu_idx(CPUARMState *env) |
65e4655c | 13647 | { |
50494a27 | 13648 | int el; |
65e4655c RH |
13649 | |
13650 | if (arm_feature(env, ARM_FEATURE_M)) { | |
50494a27 | 13651 | return arm_v7m_mmu_idx_for_secstate(env, env->v7m.secure); |
65e4655c RH |
13652 | } |
13653 | ||
50494a27 | 13654 | el = arm_current_el(env); |
65e4655c | 13655 | if (el < 2 && arm_is_secure_below_el3(env)) { |
50494a27 RH |
13656 | return ARMMMUIdx_S1SE0 + el; |
13657 | } else { | |
13658 | return ARMMMUIdx_S12NSE0 + el; | |
65e4655c | 13659 | } |
50494a27 RH |
13660 | } |
13661 | ||
13662 | int cpu_mmu_index(CPUARMState *env, bool ifetch) | |
13663 | { | |
13664 | return arm_to_core_mmu_idx(arm_mmu_idx(env)); | |
65e4655c RH |
13665 | } |
13666 | ||
64be86ab RH |
13667 | #ifndef CONFIG_USER_ONLY |
13668 | ARMMMUIdx arm_stage1_mmu_idx(CPUARMState *env) | |
13669 | { | |
13670 | return stage_1_mmu_idx(arm_mmu_idx(env)); | |
13671 | } | |
13672 | #endif | |
13673 | ||
a9e01311 | 13674 | void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc, |
b9adaa70 | 13675 | target_ulong *cs_base, uint32_t *pflags) |
a9e01311 | 13676 | { |
50494a27 | 13677 | ARMMMUIdx mmu_idx = arm_mmu_idx(env); |
2de7ace2 RH |
13678 | int current_el = arm_current_el(env); |
13679 | int fp_el = fp_exception_el(env, current_el); | |
aad821ac | 13680 | uint32_t flags = 0; |
b9adaa70 | 13681 | |
a9e01311 | 13682 | if (is_a64(env)) { |
cd208a1c | 13683 | ARMCPU *cpu = arm_env_get_cpu(env); |
08f1434a | 13684 | uint64_t sctlr; |
cd208a1c | 13685 | |
a9e01311 | 13686 | *pc = env->pc; |
aad821ac | 13687 | flags = FIELD_DP32(flags, TBFLAG_ANY, AARCH64_STATE, 1); |
5d8634f5 | 13688 | |
c47eaf9f | 13689 | /* Get control bits for tagged addresses. */ |
5d8634f5 RH |
13690 | { |
13691 | ARMMMUIdx stage1 = stage_1_mmu_idx(mmu_idx); | |
13692 | ARMVAParameters p0 = aa64_va_parameters_both(env, 0, stage1); | |
13693 | int tbii, tbid; | |
13694 | ||
13695 | /* FIXME: ARMv8.1-VHE S2 translation regime. */ | |
13696 | if (regime_el(env, stage1) < 2) { | |
13697 | ARMVAParameters p1 = aa64_va_parameters_both(env, -1, stage1); | |
13698 | tbid = (p1.tbi << 1) | p0.tbi; | |
13699 | tbii = tbid & ~((p1.tbid << 1) | p0.tbid); | |
13700 | } else { | |
13701 | tbid = p0.tbi; | |
13702 | tbii = tbid & !p0.tbid; | |
13703 | } | |
13704 | ||
13705 | flags = FIELD_DP32(flags, TBFLAG_A64, TBII, tbii); | |
4a9ee99d | 13706 | flags = FIELD_DP32(flags, TBFLAG_A64, TBID, tbid); |
5d8634f5 | 13707 | } |
1db5e96c | 13708 | |
cd208a1c | 13709 | if (cpu_isar_feature(aa64_sve, cpu)) { |
2de7ace2 | 13710 | int sve_el = sve_exception_el(env, current_el); |
e79b445d | 13711 | uint32_t zcr_len; |
1db5e96c | 13712 | |
e79b445d RH |
13713 | /* If SVE is disabled, but FP is enabled, |
13714 | * then the effective len is 0. | |
13715 | */ | |
13716 | if (sve_el != 0 && fp_el == 0) { | |
13717 | zcr_len = 0; | |
13718 | } else { | |
0ab5953b | 13719 | zcr_len = sve_zcr_len_for_el(env, current_el); |
1db5e96c | 13720 | } |
aad821ac RH |
13721 | flags = FIELD_DP32(flags, TBFLAG_A64, SVEEXC_EL, sve_el); |
13722 | flags = FIELD_DP32(flags, TBFLAG_A64, ZCR_LEN, zcr_len); | |
1db5e96c | 13723 | } |
0816ef1b | 13724 | |
64e40755 RH |
13725 | sctlr = arm_sctlr(env, current_el); |
13726 | ||
0816ef1b RH |
13727 | if (cpu_isar_feature(aa64_pauth, cpu)) { |
13728 | /* | |
13729 | * In order to save space in flags, we record only whether | |
13730 | * pauth is "inactive", meaning all insns are implemented as | |
13731 | * a nop, or "active" when some action must be performed. | |
13732 | * The decision of which action to take is left to a helper. | |
13733 | */ | |
0816ef1b RH |
13734 | if (sctlr & (SCTLR_EnIA | SCTLR_EnIB | SCTLR_EnDA | SCTLR_EnDB)) { |
13735 | flags = FIELD_DP32(flags, TBFLAG_A64, PAUTH_ACTIVE, 1); | |
13736 | } | |
13737 | } | |
08f1434a RH |
13738 | |
13739 | if (cpu_isar_feature(aa64_bti, cpu)) { | |
13740 | /* Note that SCTLR_EL[23].BT == SCTLR_BT1. */ | |
13741 | if (sctlr & (current_el == 0 ? SCTLR_BT0 : SCTLR_BT1)) { | |
13742 | flags = FIELD_DP32(flags, TBFLAG_A64, BT, 1); | |
13743 | } | |
13744 | flags = FIELD_DP32(flags, TBFLAG_A64, BTYPE, env->btype); | |
13745 | } | |
a9e01311 RH |
13746 | } else { |
13747 | *pc = env->regs[15]; | |
aad821ac RH |
13748 | flags = FIELD_DP32(flags, TBFLAG_A32, THUMB, env->thumb); |
13749 | flags = FIELD_DP32(flags, TBFLAG_A32, VECLEN, env->vfp.vec_len); | |
13750 | flags = FIELD_DP32(flags, TBFLAG_A32, VECSTRIDE, env->vfp.vec_stride); | |
13751 | flags = FIELD_DP32(flags, TBFLAG_A32, CONDEXEC, env->condexec_bits); | |
13752 | flags = FIELD_DP32(flags, TBFLAG_A32, SCTLR_B, arm_sctlr_b(env)); | |
13753 | flags = FIELD_DP32(flags, TBFLAG_A32, NS, !access_secure_reg(env)); | |
a9e01311 | 13754 | if (env->vfp.xregs[ARM_VFP_FPEXC] & (1 << 30) |
d87513c0 | 13755 | || arm_el_is_aa64(env, 1) || arm_feature(env, ARM_FEATURE_M)) { |
aad821ac | 13756 | flags = FIELD_DP32(flags, TBFLAG_A32, VFPEN, 1); |
a9e01311 | 13757 | } |
ea7ac69d PM |
13758 | /* Note that XSCALE_CPAR shares bits with VECSTRIDE */ |
13759 | if (arm_feature(env, ARM_FEATURE_XSCALE)) { | |
13760 | flags = FIELD_DP32(flags, TBFLAG_A32, | |
13761 | XSCALE_CPAR, env->cp15.c15_cpar); | |
13762 | } | |
a9e01311 RH |
13763 | } |
13764 | ||
aad821ac | 13765 | flags = FIELD_DP32(flags, TBFLAG_ANY, MMUIDX, arm_to_core_mmu_idx(mmu_idx)); |
a9e01311 RH |
13766 | |
13767 | /* The SS_ACTIVE and PSTATE_SS bits correspond to the state machine | |
13768 | * states defined in the ARM ARM for software singlestep: | |
13769 | * SS_ACTIVE PSTATE.SS State | |
13770 | * 0 x Inactive (the TB flag for SS is always 0) | |
13771 | * 1 0 Active-pending | |
13772 | * 1 1 Active-not-pending | |
13773 | */ | |
13774 | if (arm_singlestep_active(env)) { | |
aad821ac | 13775 | flags = FIELD_DP32(flags, TBFLAG_ANY, SS_ACTIVE, 1); |
a9e01311 RH |
13776 | if (is_a64(env)) { |
13777 | if (env->pstate & PSTATE_SS) { | |
aad821ac | 13778 | flags = FIELD_DP32(flags, TBFLAG_ANY, PSTATE_SS, 1); |
a9e01311 RH |
13779 | } |
13780 | } else { | |
13781 | if (env->uncached_cpsr & PSTATE_SS) { | |
aad821ac | 13782 | flags = FIELD_DP32(flags, TBFLAG_ANY, PSTATE_SS, 1); |
a9e01311 RH |
13783 | } |
13784 | } | |
13785 | } | |
13786 | if (arm_cpu_data_is_big_endian(env)) { | |
aad821ac | 13787 | flags = FIELD_DP32(flags, TBFLAG_ANY, BE_DATA, 1); |
a9e01311 | 13788 | } |
aad821ac | 13789 | flags = FIELD_DP32(flags, TBFLAG_ANY, FPEXC_EL, fp_el); |
a9e01311 RH |
13790 | |
13791 | if (arm_v7m_is_handler_mode(env)) { | |
aad821ac | 13792 | flags = FIELD_DP32(flags, TBFLAG_A32, HANDLER, 1); |
a9e01311 RH |
13793 | } |
13794 | ||
4730fb85 PM |
13795 | /* v8M always applies stack limit checks unless CCR.STKOFHFNMIGN is |
13796 | * suppressing them because the requested execution priority is less than 0. | |
13797 | */ | |
13798 | if (arm_feature(env, ARM_FEATURE_V8) && | |
13799 | arm_feature(env, ARM_FEATURE_M) && | |
13800 | !((mmu_idx & ARM_MMU_IDX_M_NEGPRI) && | |
13801 | (env->v7m.ccr[env->v7m.secure] & R_V7M_CCR_STKOFHFNMIGN_MASK))) { | |
aad821ac | 13802 | flags = FIELD_DP32(flags, TBFLAG_A32, STACKCHECK, 1); |
4730fb85 PM |
13803 | } |
13804 | ||
6d60c67a PM |
13805 | if (arm_feature(env, ARM_FEATURE_M_SECURITY) && |
13806 | FIELD_EX32(env->v7m.fpccr[M_REG_S], V7M_FPCCR, S) != env->v7m.secure) { | |
13807 | flags = FIELD_DP32(flags, TBFLAG_A32, FPCCR_S_WRONG, 1); | |
13808 | } | |
13809 | ||
6000531e PM |
13810 | if (arm_feature(env, ARM_FEATURE_M) && |
13811 | (env->v7m.fpccr[env->v7m.secure] & R_V7M_FPCCR_ASPEN_MASK) && | |
13812 | (!(env->v7m.control[M_REG_S] & R_V7M_CONTROL_FPCA_MASK) || | |
13813 | (env->v7m.secure && | |
13814 | !(env->v7m.control[M_REG_S] & R_V7M_CONTROL_SFPA_MASK)))) { | |
13815 | /* | |
13816 | * ASPEN is set, but FPCA/SFPA indicate that there is no active | |
13817 | * FP context; we must create a new FP context before executing | |
13818 | * any FP insn. | |
13819 | */ | |
13820 | flags = FIELD_DP32(flags, TBFLAG_A32, NEW_FP_CTXT_NEEDED, 1); | |
13821 | } | |
13822 | ||
e33cf0f8 PM |
13823 | if (arm_feature(env, ARM_FEATURE_M)) { |
13824 | bool is_secure = env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_S_MASK; | |
13825 | ||
13826 | if (env->v7m.fpccr[is_secure] & R_V7M_FPCCR_LSPACT_MASK) { | |
13827 | flags = FIELD_DP32(flags, TBFLAG_A32, LSPACT, 1); | |
13828 | } | |
13829 | } | |
13830 | ||
b9adaa70 | 13831 | *pflags = flags; |
a9e01311 RH |
13832 | *cs_base = 0; |
13833 | } | |
0ab5953b RH |
13834 | |
13835 | #ifdef TARGET_AARCH64 | |
13836 | /* | |
13837 | * The manual says that when SVE is enabled and VQ is widened the | |
13838 | * implementation is allowed to zero the previously inaccessible | |
13839 | * portion of the registers. The corollary to that is that when | |
13840 | * SVE is enabled and VQ is narrowed we are also allowed to zero | |
13841 | * the now inaccessible portion of the registers. | |
13842 | * | |
13843 | * The intent of this is that no predicate bit beyond VQ is ever set. | |
13844 | * Which means that some operations on predicate registers themselves | |
13845 | * may operate on full uint64_t or even unrolled across the maximum | |
13846 | * uint64_t[4]. Performing 4 bits of host arithmetic unconditionally | |
13847 | * may well be cheaper than conditionals to restrict the operation | |
13848 | * to the relevant portion of a uint16_t[16]. | |
13849 | */ | |
13850 | void aarch64_sve_narrow_vq(CPUARMState *env, unsigned vq) | |
13851 | { | |
13852 | int i, j; | |
13853 | uint64_t pmask; | |
13854 | ||
13855 | assert(vq >= 1 && vq <= ARM_MAX_VQ); | |
13856 | assert(vq <= arm_env_get_cpu(env)->sve_max_vq); | |
13857 | ||
13858 | /* Zap the high bits of the zregs. */ | |
13859 | for (i = 0; i < 32; i++) { | |
13860 | memset(&env->vfp.zregs[i].d[2 * vq], 0, 16 * (ARM_MAX_VQ - vq)); | |
13861 | } | |
13862 | ||
13863 | /* Zap the high bits of the pregs and ffr. */ | |
13864 | pmask = 0; | |
13865 | if (vq & 3) { | |
13866 | pmask = ~(-1ULL << (16 * (vq & 3))); | |
13867 | } | |
13868 | for (j = vq / 4; j < ARM_MAX_VQ / 4; j++) { | |
13869 | for (i = 0; i < 17; ++i) { | |
13870 | env->vfp.pregs[i].p[j] &= pmask; | |
13871 | } | |
13872 | pmask = 0; | |
13873 | } | |
13874 | } | |
13875 | ||
13876 | /* | |
13877 | * Notice a change in SVE vector size when changing EL. | |
13878 | */ | |
9a05f7b6 RH |
13879 | void aarch64_sve_change_el(CPUARMState *env, int old_el, |
13880 | int new_el, bool el0_a64) | |
0ab5953b | 13881 | { |
cd208a1c | 13882 | ARMCPU *cpu = arm_env_get_cpu(env); |
0ab5953b | 13883 | int old_len, new_len; |
9a05f7b6 | 13884 | bool old_a64, new_a64; |
0ab5953b RH |
13885 | |
13886 | /* Nothing to do if no SVE. */ | |
cd208a1c | 13887 | if (!cpu_isar_feature(aa64_sve, cpu)) { |
0ab5953b RH |
13888 | return; |
13889 | } | |
13890 | ||
13891 | /* Nothing to do if FP is disabled in either EL. */ | |
13892 | if (fp_exception_el(env, old_el) || fp_exception_el(env, new_el)) { | |
13893 | return; | |
13894 | } | |
13895 | ||
13896 | /* | |
13897 | * DDI0584A.d sec 3.2: "If SVE instructions are disabled or trapped | |
13898 | * at ELx, or not available because the EL is in AArch32 state, then | |
13899 | * for all purposes other than a direct read, the ZCR_ELx.LEN field | |
13900 | * has an effective value of 0". | |
13901 | * | |
13902 | * Consider EL2 (aa64, vq=4) -> EL0 (aa32) -> EL1 (aa64, vq=0). | |
13903 | * If we ignore aa32 state, we would fail to see the vq4->vq0 transition | |
13904 | * from EL2->EL1. Thus we go ahead and narrow when entering aa32 so that | |
13905 | * we already have the correct register contents when encountering the | |
13906 | * vq0->vq0 transition between EL0->EL1. | |
13907 | */ | |
9a05f7b6 RH |
13908 | old_a64 = old_el ? arm_el_is_aa64(env, old_el) : el0_a64; |
13909 | old_len = (old_a64 && !sve_exception_el(env, old_el) | |
0ab5953b | 13910 | ? sve_zcr_len_for_el(env, old_el) : 0); |
9a05f7b6 RH |
13911 | new_a64 = new_el ? arm_el_is_aa64(env, new_el) : el0_a64; |
13912 | new_len = (new_a64 && !sve_exception_el(env, new_el) | |
0ab5953b RH |
13913 | ? sve_zcr_len_for_el(env, new_el) : 0); |
13914 | ||
13915 | /* When changing vector length, clear inaccessible state. */ | |
13916 | if (new_len < old_len) { | |
13917 | aarch64_sve_narrow_vq(env, new_len + 1); | |
13918 | } | |
13919 | } | |
13920 | #endif |