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dec9c2d4 AF |
1 | /* |
2 | * QEMU ARM CPU | |
3 | * | |
4 | * Copyright (c) 2012 SUSE LINUX Products GmbH | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version 2 | |
9 | * of the License, or (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, see | |
18 | * <http://www.gnu.org/licenses/gpl-2.0.html> | |
19 | */ | |
20 | ||
74c21bd0 | 21 | #include "qemu/osdep.h" |
86480615 | 22 | #include "qemu/qemu-print.h" |
a8d25326 | 23 | #include "qemu-common.h" |
181962fd | 24 | #include "target/arm/idau.h" |
0b8fa32f | 25 | #include "qemu/module.h" |
da34e65c | 26 | #include "qapi/error.h" |
f9f62e4c | 27 | #include "qapi/visitor.h" |
778c3a06 | 28 | #include "cpu.h" |
78271684 CF |
29 | #ifdef CONFIG_TCG |
30 | #include "hw/core/tcg-cpu-ops.h" | |
31 | #endif /* CONFIG_TCG */ | |
ccd38087 | 32 | #include "internals.h" |
63c91552 | 33 | #include "exec/exec-all.h" |
5de16430 | 34 | #include "hw/qdev-properties.h" |
3c30dd5a PM |
35 | #if !defined(CONFIG_USER_ONLY) |
36 | #include "hw/loader.h" | |
cc7d44c2 | 37 | #include "hw/boards.h" |
3c30dd5a | 38 | #endif |
14a48c1d | 39 | #include "sysemu/tcg.h" |
b3946626 | 40 | #include "sysemu/hw_accel.h" |
50a2c6e5 | 41 | #include "kvm_arm.h" |
110f6c70 | 42 | #include "disas/capstone.h" |
24f91e81 | 43 | #include "fpu/softfloat.h" |
dec9c2d4 | 44 | |
f45748f1 AF |
45 | static void arm_cpu_set_pc(CPUState *cs, vaddr value) |
46 | { | |
47 | ARMCPU *cpu = ARM_CPU(cs); | |
42f6ed91 JS |
48 | CPUARMState *env = &cpu->env; |
49 | ||
50 | if (is_a64(env)) { | |
51 | env->pc = value; | |
52 | env->thumb = 0; | |
53 | } else { | |
54 | env->regs[15] = value & ~1; | |
55 | env->thumb = value & 1; | |
56 | } | |
57 | } | |
f45748f1 | 58 | |
ec62595b | 59 | #ifdef CONFIG_TCG |
78271684 CF |
60 | void arm_cpu_synchronize_from_tb(CPUState *cs, |
61 | const TranslationBlock *tb) | |
42f6ed91 JS |
62 | { |
63 | ARMCPU *cpu = ARM_CPU(cs); | |
64 | CPUARMState *env = &cpu->env; | |
65 | ||
66 | /* | |
67 | * It's OK to look at env for the current mode here, because it's | |
68 | * never possible for an AArch64 TB to chain to an AArch32 TB. | |
69 | */ | |
70 | if (is_a64(env)) { | |
71 | env->pc = tb->pc; | |
72 | } else { | |
73 | env->regs[15] = tb->pc; | |
74 | } | |
f45748f1 | 75 | } |
ec62595b | 76 | #endif /* CONFIG_TCG */ |
f45748f1 | 77 | |
8c2e1b00 AF |
78 | static bool arm_cpu_has_work(CPUState *cs) |
79 | { | |
543486db RH |
80 | ARMCPU *cpu = ARM_CPU(cs); |
81 | ||
062ba099 | 82 | return (cpu->power_state != PSCI_OFF) |
543486db | 83 | && cs->interrupt_request & |
136e67e9 EI |
84 | (CPU_INTERRUPT_FIQ | CPU_INTERRUPT_HARD |
85 | | CPU_INTERRUPT_VFIQ | CPU_INTERRUPT_VIRQ | |
86 | | CPU_INTERRUPT_EXITTB); | |
8c2e1b00 AF |
87 | } |
88 | ||
b5c53d1b AL |
89 | void arm_register_pre_el_change_hook(ARMCPU *cpu, ARMELChangeHookFn *hook, |
90 | void *opaque) | |
91 | { | |
92 | ARMELChangeHook *entry = g_new0(ARMELChangeHook, 1); | |
93 | ||
94 | entry->hook = hook; | |
95 | entry->opaque = opaque; | |
96 | ||
97 | QLIST_INSERT_HEAD(&cpu->pre_el_change_hooks, entry, node); | |
98 | } | |
99 | ||
08267487 | 100 | void arm_register_el_change_hook(ARMCPU *cpu, ARMELChangeHookFn *hook, |
bd7d00fc PM |
101 | void *opaque) |
102 | { | |
08267487 AL |
103 | ARMELChangeHook *entry = g_new0(ARMELChangeHook, 1); |
104 | ||
105 | entry->hook = hook; | |
106 | entry->opaque = opaque; | |
107 | ||
108 | QLIST_INSERT_HEAD(&cpu->el_change_hooks, entry, node); | |
bd7d00fc PM |
109 | } |
110 | ||
4b6a83fb PM |
111 | static void cp_reg_reset(gpointer key, gpointer value, gpointer opaque) |
112 | { | |
113 | /* Reset a single ARMCPRegInfo register */ | |
114 | ARMCPRegInfo *ri = value; | |
115 | ARMCPU *cpu = opaque; | |
116 | ||
b061a82b | 117 | if (ri->type & (ARM_CP_SPECIAL | ARM_CP_ALIAS)) { |
4b6a83fb PM |
118 | return; |
119 | } | |
120 | ||
121 | if (ri->resetfn) { | |
122 | ri->resetfn(&cpu->env, ri); | |
123 | return; | |
124 | } | |
125 | ||
126 | /* A zero offset is never possible as it would be regs[0] | |
127 | * so we use it to indicate that reset is being handled elsewhere. | |
128 | * This is basically only used for fields in non-core coprocessors | |
129 | * (like the pxa2xx ones). | |
130 | */ | |
131 | if (!ri->fieldoffset) { | |
132 | return; | |
133 | } | |
134 | ||
67ed771d | 135 | if (cpreg_field_is_64bit(ri)) { |
4b6a83fb PM |
136 | CPREG_FIELD64(&cpu->env, ri) = ri->resetvalue; |
137 | } else { | |
138 | CPREG_FIELD32(&cpu->env, ri) = ri->resetvalue; | |
139 | } | |
140 | } | |
141 | ||
49a66191 PM |
142 | static void cp_reg_check_reset(gpointer key, gpointer value, gpointer opaque) |
143 | { | |
144 | /* Purely an assertion check: we've already done reset once, | |
145 | * so now check that running the reset for the cpreg doesn't | |
146 | * change its value. This traps bugs where two different cpregs | |
147 | * both try to reset the same state field but to different values. | |
148 | */ | |
149 | ARMCPRegInfo *ri = value; | |
150 | ARMCPU *cpu = opaque; | |
151 | uint64_t oldvalue, newvalue; | |
152 | ||
153 | if (ri->type & (ARM_CP_SPECIAL | ARM_CP_ALIAS | ARM_CP_NO_RAW)) { | |
154 | return; | |
155 | } | |
156 | ||
157 | oldvalue = read_raw_cp_reg(&cpu->env, ri); | |
158 | cp_reg_reset(key, value, opaque); | |
159 | newvalue = read_raw_cp_reg(&cpu->env, ri); | |
160 | assert(oldvalue == newvalue); | |
161 | } | |
162 | ||
781c67ca | 163 | static void arm_cpu_reset(DeviceState *dev) |
dec9c2d4 | 164 | { |
781c67ca | 165 | CPUState *s = CPU(dev); |
dec9c2d4 AF |
166 | ARMCPU *cpu = ARM_CPU(s); |
167 | ARMCPUClass *acc = ARM_CPU_GET_CLASS(cpu); | |
3c30dd5a | 168 | CPUARMState *env = &cpu->env; |
3c30dd5a | 169 | |
781c67ca | 170 | acc->parent_reset(dev); |
dec9c2d4 | 171 | |
1f5c00cf AB |
172 | memset(env, 0, offsetof(CPUARMState, end_reset_fields)); |
173 | ||
4b6a83fb | 174 | g_hash_table_foreach(cpu->cp_regs, cp_reg_reset, cpu); |
49a66191 PM |
175 | g_hash_table_foreach(cpu->cp_regs, cp_reg_check_reset, cpu); |
176 | ||
3c30dd5a | 177 | env->vfp.xregs[ARM_VFP_FPSID] = cpu->reset_fpsid; |
47576b94 RH |
178 | env->vfp.xregs[ARM_VFP_MVFR0] = cpu->isar.mvfr0; |
179 | env->vfp.xregs[ARM_VFP_MVFR1] = cpu->isar.mvfr1; | |
180 | env->vfp.xregs[ARM_VFP_MVFR2] = cpu->isar.mvfr2; | |
3c30dd5a | 181 | |
c1b70158 | 182 | cpu->power_state = s->start_powered_off ? PSCI_OFF : PSCI_ON; |
543486db | 183 | |
3c30dd5a PM |
184 | if (arm_feature(env, ARM_FEATURE_IWMMXT)) { |
185 | env->iwmmxt.cregs[ARM_IWMMXT_wCID] = 0x69051000 | 'Q'; | |
186 | } | |
187 | ||
3926cc84 AG |
188 | if (arm_feature(env, ARM_FEATURE_AARCH64)) { |
189 | /* 64 bit CPUs always start in 64 bit mode */ | |
190 | env->aarch64 = 1; | |
d356312f PM |
191 | #if defined(CONFIG_USER_ONLY) |
192 | env->pstate = PSTATE_MODE_EL0t; | |
14e5f106 | 193 | /* Userspace expects access to DC ZVA, CTL_EL0 and the cache ops */ |
137feaa9 | 194 | env->cp15.sctlr_el[1] |= SCTLR_UCT | SCTLR_UCI | SCTLR_DZE; |
276c6e81 RH |
195 | /* Enable all PAC keys. */ |
196 | env->cp15.sctlr_el[1] |= (SCTLR_EnIA | SCTLR_EnIB | | |
197 | SCTLR_EnDA | SCTLR_EnDB); | |
8c6afa6a | 198 | /* and to the FP/Neon instructions */ |
7ebd5f2e | 199 | env->cp15.cpacr_el1 = deposit64(env->cp15.cpacr_el1, 20, 2, 3); |
802ac0e1 RH |
200 | /* and to the SVE instructions */ |
201 | env->cp15.cpacr_el1 = deposit64(env->cp15.cpacr_el1, 16, 2, 3); | |
7b6a2198 AB |
202 | /* with reasonable vector length */ |
203 | if (cpu_isar_feature(aa64_sve, cpu)) { | |
204 | env->vfp.zcr_el[1] = MIN(cpu->sve_max_vq - 1, 3); | |
205 | } | |
f6a148fe | 206 | /* |
16c84978 RH |
207 | * Enable TBI0 but not TBI1. |
208 | * Note that this must match useronly_clean_ptr. | |
f6a148fe | 209 | */ |
16c84978 | 210 | env->cp15.tcr_el[1].raw_tcr = (1ULL << 37); |
e3232864 RH |
211 | |
212 | /* Enable MTE */ | |
213 | if (cpu_isar_feature(aa64_mte, cpu)) { | |
214 | /* Enable tag access, but leave TCF0 as No Effect (0). */ | |
215 | env->cp15.sctlr_el[1] |= SCTLR_ATA0; | |
216 | /* | |
217 | * Exclude all tags, so that tag 0 is always used. | |
218 | * This corresponds to Linux current->thread.gcr_incl = 0. | |
219 | * | |
220 | * Set RRND, so that helper_irg() will generate a seed later. | |
221 | * Here in cpu_reset(), the crypto subsystem has not yet been | |
222 | * initialized. | |
223 | */ | |
224 | env->cp15.gcr_el1 = 0x1ffff; | |
225 | } | |
d356312f | 226 | #else |
5097227c GB |
227 | /* Reset into the highest available EL */ |
228 | if (arm_feature(env, ARM_FEATURE_EL3)) { | |
229 | env->pstate = PSTATE_MODE_EL3h; | |
230 | } else if (arm_feature(env, ARM_FEATURE_EL2)) { | |
231 | env->pstate = PSTATE_MODE_EL2h; | |
232 | } else { | |
233 | env->pstate = PSTATE_MODE_EL1h; | |
234 | } | |
3933443e | 235 | env->pc = cpu->rvbar; |
8c6afa6a PM |
236 | #endif |
237 | } else { | |
238 | #if defined(CONFIG_USER_ONLY) | |
239 | /* Userspace expects access to cp10 and cp11 for FP/Neon */ | |
7ebd5f2e | 240 | env->cp15.cpacr_el1 = deposit64(env->cp15.cpacr_el1, 20, 4, 0xf); |
d356312f | 241 | #endif |
3926cc84 AG |
242 | } |
243 | ||
3c30dd5a PM |
244 | #if defined(CONFIG_USER_ONLY) |
245 | env->uncached_cpsr = ARM_CPU_MODE_USR; | |
246 | /* For user mode we must enable access to coprocessors */ | |
247 | env->vfp.xregs[ARM_VFP_FPEXC] = 1 << 30; | |
248 | if (arm_feature(env, ARM_FEATURE_IWMMXT)) { | |
249 | env->cp15.c15_cpar = 3; | |
250 | } else if (arm_feature(env, ARM_FEATURE_XSCALE)) { | |
251 | env->cp15.c15_cpar = 1; | |
252 | } | |
253 | #else | |
060a65df PM |
254 | |
255 | /* | |
256 | * If the highest available EL is EL2, AArch32 will start in Hyp | |
257 | * mode; otherwise it starts in SVC. Note that if we start in | |
258 | * AArch64 then these values in the uncached_cpsr will be ignored. | |
259 | */ | |
260 | if (arm_feature(env, ARM_FEATURE_EL2) && | |
261 | !arm_feature(env, ARM_FEATURE_EL3)) { | |
262 | env->uncached_cpsr = ARM_CPU_MODE_HYP; | |
263 | } else { | |
264 | env->uncached_cpsr = ARM_CPU_MODE_SVC; | |
265 | } | |
4cc35614 | 266 | env->daif = PSTATE_D | PSTATE_A | PSTATE_I | PSTATE_F; |
dc7abe4d | 267 | |
531c60a9 | 268 | if (arm_feature(env, ARM_FEATURE_M)) { |
6e3cf5df MG |
269 | uint32_t initial_msp; /* Loaded from 0x0 */ |
270 | uint32_t initial_pc; /* Loaded from 0x4 */ | |
3c30dd5a | 271 | uint8_t *rom; |
38e2a77c | 272 | uint32_t vecbase; |
6e3cf5df | 273 | |
8128c8e8 PM |
274 | if (cpu_isar_feature(aa32_lob, cpu)) { |
275 | /* | |
276 | * LTPSIZE is constant 4 if MVE not implemented, and resets | |
277 | * to an UNKNOWN value if MVE is implemented. We choose to | |
278 | * always reset to 4. | |
279 | */ | |
280 | env->v7m.ltpsize = 4; | |
99c7834f PM |
281 | /* The LTPSIZE field in FPDSCR is constant and reads as 4. */ |
282 | env->v7m.fpdscr[M_REG_NS] = 4 << FPCR_LTPSIZE_SHIFT; | |
283 | env->v7m.fpdscr[M_REG_S] = 4 << FPCR_LTPSIZE_SHIFT; | |
8128c8e8 PM |
284 | } |
285 | ||
1e577cc7 PM |
286 | if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { |
287 | env->v7m.secure = true; | |
3b2e9344 PM |
288 | } else { |
289 | /* This bit resets to 0 if security is supported, but 1 if | |
290 | * it is not. The bit is not present in v7M, but we set it | |
291 | * here so we can avoid having to make checks on it conditional | |
292 | * on ARM_FEATURE_V8 (we don't let the guest see the bit). | |
293 | */ | |
294 | env->v7m.aircr = R_V7M_AIRCR_BFHFNMINS_MASK; | |
02ac2f7f PM |
295 | /* |
296 | * Set NSACR to indicate "NS access permitted to everything"; | |
297 | * this avoids having to have all the tests of it being | |
298 | * conditional on ARM_FEATURE_M_SECURITY. Note also that from | |
299 | * v8.1M the guest-visible value of NSACR in a CPU without the | |
300 | * Security Extension is 0xcff. | |
301 | */ | |
302 | env->v7m.nsacr = 0xcff; | |
1e577cc7 PM |
303 | } |
304 | ||
9d40cd8a | 305 | /* In v7M the reset value of this bit is IMPDEF, but ARM recommends |
2c4da50d | 306 | * that it resets to 1, so QEMU always does that rather than making |
9d40cd8a | 307 | * it dependent on CPU model. In v8M it is RES1. |
2c4da50d | 308 | */ |
9d40cd8a PM |
309 | env->v7m.ccr[M_REG_NS] = R_V7M_CCR_STKALIGN_MASK; |
310 | env->v7m.ccr[M_REG_S] = R_V7M_CCR_STKALIGN_MASK; | |
311 | if (arm_feature(env, ARM_FEATURE_V8)) { | |
312 | /* in v8M the NONBASETHRDENA bit [0] is RES1 */ | |
313 | env->v7m.ccr[M_REG_NS] |= R_V7M_CCR_NONBASETHRDENA_MASK; | |
314 | env->v7m.ccr[M_REG_S] |= R_V7M_CCR_NONBASETHRDENA_MASK; | |
315 | } | |
22ab3460 JS |
316 | if (!arm_feature(env, ARM_FEATURE_M_MAIN)) { |
317 | env->v7m.ccr[M_REG_NS] |= R_V7M_CCR_UNALIGN_TRP_MASK; | |
318 | env->v7m.ccr[M_REG_S] |= R_V7M_CCR_UNALIGN_TRP_MASK; | |
319 | } | |
2c4da50d | 320 | |
7fbc6a40 | 321 | if (cpu_isar_feature(aa32_vfp_simd, cpu)) { |
d33abe82 PM |
322 | env->v7m.fpccr[M_REG_NS] = R_V7M_FPCCR_ASPEN_MASK; |
323 | env->v7m.fpccr[M_REG_S] = R_V7M_FPCCR_ASPEN_MASK | | |
324 | R_V7M_FPCCR_LSPEN_MASK | R_V7M_FPCCR_S_MASK; | |
325 | } | |
056f43df PM |
326 | /* Unlike A/R profile, M profile defines the reset LR value */ |
327 | env->regs[14] = 0xffffffff; | |
328 | ||
38e2a77c | 329 | env->v7m.vecbase[M_REG_S] = cpu->init_svtor & 0xffffff80; |
7cda2149 | 330 | env->v7m.vecbase[M_REG_NS] = cpu->init_nsvtor & 0xffffff80; |
38e2a77c PM |
331 | |
332 | /* Load the initial SP and PC from offset 0 and 4 in the vector table */ | |
333 | vecbase = env->v7m.vecbase[env->v7m.secure]; | |
75ce72b7 | 334 | rom = rom_ptr_for_as(s->as, vecbase, 8); |
3c30dd5a | 335 | if (rom) { |
6e3cf5df MG |
336 | /* Address zero is covered by ROM which hasn't yet been |
337 | * copied into physical memory. | |
338 | */ | |
339 | initial_msp = ldl_p(rom); | |
340 | initial_pc = ldl_p(rom + 4); | |
341 | } else { | |
342 | /* Address zero not covered by a ROM blob, or the ROM blob | |
343 | * is in non-modifiable memory and this is a second reset after | |
344 | * it got copied into memory. In the latter case, rom_ptr | |
345 | * will return a NULL pointer and we should use ldl_phys instead. | |
346 | */ | |
38e2a77c PM |
347 | initial_msp = ldl_phys(s->as, vecbase); |
348 | initial_pc = ldl_phys(s->as, vecbase + 4); | |
3c30dd5a | 349 | } |
6e3cf5df MG |
350 | |
351 | env->regs[13] = initial_msp & 0xFFFFFFFC; | |
352 | env->regs[15] = initial_pc & ~1; | |
353 | env->thumb = initial_pc & 1; | |
3c30dd5a | 354 | } |
387f9806 | 355 | |
137feaa9 FA |
356 | /* AArch32 has a hard highvec setting of 0xFFFF0000. If we are currently |
357 | * executing as AArch32 then check if highvecs are enabled and | |
358 | * adjust the PC accordingly. | |
359 | */ | |
360 | if (A32_BANKED_CURRENT_REG_GET(env, sctlr) & SCTLR_V) { | |
34bf7744 | 361 | env->regs[15] = 0xFFFF0000; |
387f9806 AP |
362 | } |
363 | ||
dc3c4c14 PM |
364 | /* M profile requires that reset clears the exclusive monitor; |
365 | * A profile does not, but clearing it makes more sense than having it | |
366 | * set with an exclusive access on address zero. | |
367 | */ | |
368 | arm_clear_exclusive(env); | |
369 | ||
3c30dd5a | 370 | env->vfp.xregs[ARM_VFP_FPEXC] = 0; |
3c30dd5a | 371 | #endif |
69ceea64 | 372 | |
0e1a46bb | 373 | if (arm_feature(env, ARM_FEATURE_PMSA)) { |
69ceea64 | 374 | if (cpu->pmsav7_dregion > 0) { |
0e1a46bb | 375 | if (arm_feature(env, ARM_FEATURE_V8)) { |
62c58ee0 PM |
376 | memset(env->pmsav8.rbar[M_REG_NS], 0, |
377 | sizeof(*env->pmsav8.rbar[M_REG_NS]) | |
378 | * cpu->pmsav7_dregion); | |
379 | memset(env->pmsav8.rlar[M_REG_NS], 0, | |
380 | sizeof(*env->pmsav8.rlar[M_REG_NS]) | |
381 | * cpu->pmsav7_dregion); | |
382 | if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { | |
383 | memset(env->pmsav8.rbar[M_REG_S], 0, | |
384 | sizeof(*env->pmsav8.rbar[M_REG_S]) | |
385 | * cpu->pmsav7_dregion); | |
386 | memset(env->pmsav8.rlar[M_REG_S], 0, | |
387 | sizeof(*env->pmsav8.rlar[M_REG_S]) | |
388 | * cpu->pmsav7_dregion); | |
389 | } | |
0e1a46bb PM |
390 | } else if (arm_feature(env, ARM_FEATURE_V7)) { |
391 | memset(env->pmsav7.drbar, 0, | |
392 | sizeof(*env->pmsav7.drbar) * cpu->pmsav7_dregion); | |
393 | memset(env->pmsav7.drsr, 0, | |
394 | sizeof(*env->pmsav7.drsr) * cpu->pmsav7_dregion); | |
395 | memset(env->pmsav7.dracr, 0, | |
396 | sizeof(*env->pmsav7.dracr) * cpu->pmsav7_dregion); | |
397 | } | |
69ceea64 | 398 | } |
1bc04a88 PM |
399 | env->pmsav7.rnr[M_REG_NS] = 0; |
400 | env->pmsav7.rnr[M_REG_S] = 0; | |
4125e6fe PM |
401 | env->pmsav8.mair0[M_REG_NS] = 0; |
402 | env->pmsav8.mair0[M_REG_S] = 0; | |
403 | env->pmsav8.mair1[M_REG_NS] = 0; | |
404 | env->pmsav8.mair1[M_REG_S] = 0; | |
69ceea64 PM |
405 | } |
406 | ||
9901c576 PM |
407 | if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { |
408 | if (cpu->sau_sregion > 0) { | |
409 | memset(env->sau.rbar, 0, sizeof(*env->sau.rbar) * cpu->sau_sregion); | |
410 | memset(env->sau.rlar, 0, sizeof(*env->sau.rlar) * cpu->sau_sregion); | |
411 | } | |
412 | env->sau.rnr = 0; | |
413 | /* SAU_CTRL reset value is IMPDEF; we choose 0, which is what | |
414 | * the Cortex-M33 does. | |
415 | */ | |
416 | env->sau.ctrl = 0; | |
417 | } | |
418 | ||
3c30dd5a PM |
419 | set_flush_to_zero(1, &env->vfp.standard_fp_status); |
420 | set_flush_inputs_to_zero(1, &env->vfp.standard_fp_status); | |
421 | set_default_nan_mode(1, &env->vfp.standard_fp_status); | |
aaae563b | 422 | set_default_nan_mode(1, &env->vfp.standard_fp_status_f16); |
3c30dd5a PM |
423 | set_float_detect_tininess(float_tininess_before_rounding, |
424 | &env->vfp.fp_status); | |
425 | set_float_detect_tininess(float_tininess_before_rounding, | |
426 | &env->vfp.standard_fp_status); | |
bcc531f0 PM |
427 | set_float_detect_tininess(float_tininess_before_rounding, |
428 | &env->vfp.fp_status_f16); | |
aaae563b PM |
429 | set_float_detect_tininess(float_tininess_before_rounding, |
430 | &env->vfp.standard_fp_status_f16); | |
50a2c6e5 PB |
431 | #ifndef CONFIG_USER_ONLY |
432 | if (kvm_enabled()) { | |
433 | kvm_arm_reset_vcpu(cpu); | |
434 | } | |
435 | #endif | |
9ee98ce8 | 436 | |
46747d15 | 437 | hw_breakpoint_update_all(cpu); |
9ee98ce8 | 438 | hw_watchpoint_update_all(cpu); |
a8a79c7a | 439 | arm_rebuild_hflags(env); |
dec9c2d4 AF |
440 | } |
441 | ||
310cedf3 | 442 | static inline bool arm_excp_unmasked(CPUState *cs, unsigned int excp_idx, |
be879556 RH |
443 | unsigned int target_el, |
444 | unsigned int cur_el, bool secure, | |
445 | uint64_t hcr_el2) | |
310cedf3 RH |
446 | { |
447 | CPUARMState *env = cs->env_ptr; | |
310cedf3 | 448 | bool pstate_unmasked; |
16e07f78 | 449 | bool unmasked = false; |
310cedf3 RH |
450 | |
451 | /* | |
452 | * Don't take exceptions if they target a lower EL. | |
453 | * This check should catch any exceptions that would not be taken | |
454 | * but left pending. | |
455 | */ | |
456 | if (cur_el > target_el) { | |
457 | return false; | |
458 | } | |
459 | ||
310cedf3 RH |
460 | switch (excp_idx) { |
461 | case EXCP_FIQ: | |
462 | pstate_unmasked = !(env->daif & PSTATE_F); | |
463 | break; | |
464 | ||
465 | case EXCP_IRQ: | |
466 | pstate_unmasked = !(env->daif & PSTATE_I); | |
467 | break; | |
468 | ||
469 | case EXCP_VFIQ: | |
cc974d5c RDC |
470 | if (!(hcr_el2 & HCR_FMO) || (hcr_el2 & HCR_TGE)) { |
471 | /* VFIQs are only taken when hypervized. */ | |
310cedf3 RH |
472 | return false; |
473 | } | |
474 | return !(env->daif & PSTATE_F); | |
475 | case EXCP_VIRQ: | |
cc974d5c RDC |
476 | if (!(hcr_el2 & HCR_IMO) || (hcr_el2 & HCR_TGE)) { |
477 | /* VIRQs are only taken when hypervized. */ | |
310cedf3 RH |
478 | return false; |
479 | } | |
480 | return !(env->daif & PSTATE_I); | |
481 | default: | |
482 | g_assert_not_reached(); | |
483 | } | |
484 | ||
485 | /* | |
486 | * Use the target EL, current execution state and SCR/HCR settings to | |
487 | * determine whether the corresponding CPSR bit is used to mask the | |
488 | * interrupt. | |
489 | */ | |
490 | if ((target_el > cur_el) && (target_el != 1)) { | |
491 | /* Exceptions targeting a higher EL may not be maskable */ | |
492 | if (arm_feature(env, ARM_FEATURE_AARCH64)) { | |
493 | /* | |
494 | * 64-bit masking rules are simple: exceptions to EL3 | |
495 | * can't be masked, and exceptions to EL2 can only be | |
496 | * masked from Secure state. The HCR and SCR settings | |
497 | * don't affect the masking logic, only the interrupt routing. | |
498 | */ | |
926c1b97 | 499 | if (target_el == 3 || !secure || (env->cp15.scr_el3 & SCR_EEL2)) { |
16e07f78 | 500 | unmasked = true; |
310cedf3 RH |
501 | } |
502 | } else { | |
503 | /* | |
504 | * The old 32-bit-only environment has a more complicated | |
505 | * masking setup. HCR and SCR bits not only affect interrupt | |
506 | * routing but also change the behaviour of masking. | |
507 | */ | |
508 | bool hcr, scr; | |
509 | ||
510 | switch (excp_idx) { | |
511 | case EXCP_FIQ: | |
512 | /* | |
513 | * If FIQs are routed to EL3 or EL2 then there are cases where | |
514 | * we override the CPSR.F in determining if the exception is | |
515 | * masked or not. If neither of these are set then we fall back | |
516 | * to the CPSR.F setting otherwise we further assess the state | |
517 | * below. | |
518 | */ | |
519 | hcr = hcr_el2 & HCR_FMO; | |
520 | scr = (env->cp15.scr_el3 & SCR_FIQ); | |
521 | ||
522 | /* | |
523 | * When EL3 is 32-bit, the SCR.FW bit controls whether the | |
524 | * CPSR.F bit masks FIQ interrupts when taken in non-secure | |
525 | * state. If SCR.FW is set then FIQs can be masked by CPSR.F | |
526 | * when non-secure but only when FIQs are only routed to EL3. | |
527 | */ | |
528 | scr = scr && !((env->cp15.scr_el3 & SCR_FW) && !hcr); | |
529 | break; | |
530 | case EXCP_IRQ: | |
531 | /* | |
532 | * When EL3 execution state is 32-bit, if HCR.IMO is set then | |
533 | * we may override the CPSR.I masking when in non-secure state. | |
534 | * The SCR.IRQ setting has already been taken into consideration | |
535 | * when setting the target EL, so it does not have a further | |
536 | * affect here. | |
537 | */ | |
538 | hcr = hcr_el2 & HCR_IMO; | |
539 | scr = false; | |
540 | break; | |
541 | default: | |
542 | g_assert_not_reached(); | |
543 | } | |
544 | ||
545 | if ((scr || hcr) && !secure) { | |
16e07f78 | 546 | unmasked = true; |
310cedf3 RH |
547 | } |
548 | } | |
549 | } | |
550 | ||
551 | /* | |
552 | * The PSTATE bits only mask the interrupt if we have not overriden the | |
553 | * ability above. | |
554 | */ | |
555 | return unmasked || pstate_unmasked; | |
556 | } | |
557 | ||
e8925712 RH |
558 | bool arm_cpu_exec_interrupt(CPUState *cs, int interrupt_request) |
559 | { | |
560 | CPUClass *cc = CPU_GET_CLASS(cs); | |
012a906b GB |
561 | CPUARMState *env = cs->env_ptr; |
562 | uint32_t cur_el = arm_current_el(env); | |
563 | bool secure = arm_is_secure(env); | |
be879556 | 564 | uint64_t hcr_el2 = arm_hcr_el2_eff(env); |
012a906b GB |
565 | uint32_t target_el; |
566 | uint32_t excp_idx; | |
d63d0ec5 RH |
567 | |
568 | /* The prioritization of interrupts is IMPLEMENTATION DEFINED. */ | |
e8925712 | 569 | |
012a906b GB |
570 | if (interrupt_request & CPU_INTERRUPT_FIQ) { |
571 | excp_idx = EXCP_FIQ; | |
572 | target_el = arm_phys_excp_target_el(cs, excp_idx, cur_el, secure); | |
be879556 RH |
573 | if (arm_excp_unmasked(cs, excp_idx, target_el, |
574 | cur_el, secure, hcr_el2)) { | |
d63d0ec5 | 575 | goto found; |
012a906b | 576 | } |
e8925712 | 577 | } |
012a906b GB |
578 | if (interrupt_request & CPU_INTERRUPT_HARD) { |
579 | excp_idx = EXCP_IRQ; | |
580 | target_el = arm_phys_excp_target_el(cs, excp_idx, cur_el, secure); | |
be879556 RH |
581 | if (arm_excp_unmasked(cs, excp_idx, target_el, |
582 | cur_el, secure, hcr_el2)) { | |
d63d0ec5 | 583 | goto found; |
012a906b | 584 | } |
e8925712 | 585 | } |
012a906b GB |
586 | if (interrupt_request & CPU_INTERRUPT_VIRQ) { |
587 | excp_idx = EXCP_VIRQ; | |
588 | target_el = 1; | |
be879556 RH |
589 | if (arm_excp_unmasked(cs, excp_idx, target_el, |
590 | cur_el, secure, hcr_el2)) { | |
d63d0ec5 | 591 | goto found; |
012a906b | 592 | } |
136e67e9 | 593 | } |
012a906b GB |
594 | if (interrupt_request & CPU_INTERRUPT_VFIQ) { |
595 | excp_idx = EXCP_VFIQ; | |
596 | target_el = 1; | |
be879556 RH |
597 | if (arm_excp_unmasked(cs, excp_idx, target_el, |
598 | cur_el, secure, hcr_el2)) { | |
d63d0ec5 | 599 | goto found; |
012a906b | 600 | } |
136e67e9 | 601 | } |
d63d0ec5 | 602 | return false; |
e8925712 | 603 | |
d63d0ec5 RH |
604 | found: |
605 | cs->exception_index = excp_idx; | |
606 | env->exception.target_el = target_el; | |
78271684 | 607 | cc->tcg_ops->do_interrupt(cs); |
d63d0ec5 | 608 | return true; |
e8925712 RH |
609 | } |
610 | ||
89430fc6 PM |
611 | void arm_cpu_update_virq(ARMCPU *cpu) |
612 | { | |
613 | /* | |
614 | * Update the interrupt level for VIRQ, which is the logical OR of | |
615 | * the HCR_EL2.VI bit and the input line level from the GIC. | |
616 | */ | |
617 | CPUARMState *env = &cpu->env; | |
618 | CPUState *cs = CPU(cpu); | |
619 | ||
620 | bool new_state = (env->cp15.hcr_el2 & HCR_VI) || | |
621 | (env->irq_line_state & CPU_INTERRUPT_VIRQ); | |
622 | ||
623 | if (new_state != ((cs->interrupt_request & CPU_INTERRUPT_VIRQ) != 0)) { | |
624 | if (new_state) { | |
625 | cpu_interrupt(cs, CPU_INTERRUPT_VIRQ); | |
626 | } else { | |
627 | cpu_reset_interrupt(cs, CPU_INTERRUPT_VIRQ); | |
628 | } | |
629 | } | |
630 | } | |
631 | ||
632 | void arm_cpu_update_vfiq(ARMCPU *cpu) | |
633 | { | |
634 | /* | |
635 | * Update the interrupt level for VFIQ, which is the logical OR of | |
636 | * the HCR_EL2.VF bit and the input line level from the GIC. | |
637 | */ | |
638 | CPUARMState *env = &cpu->env; | |
639 | CPUState *cs = CPU(cpu); | |
640 | ||
641 | bool new_state = (env->cp15.hcr_el2 & HCR_VF) || | |
642 | (env->irq_line_state & CPU_INTERRUPT_VFIQ); | |
643 | ||
644 | if (new_state != ((cs->interrupt_request & CPU_INTERRUPT_VFIQ) != 0)) { | |
645 | if (new_state) { | |
646 | cpu_interrupt(cs, CPU_INTERRUPT_VFIQ); | |
647 | } else { | |
648 | cpu_reset_interrupt(cs, CPU_INTERRUPT_VFIQ); | |
649 | } | |
650 | } | |
651 | } | |
652 | ||
7c1840b6 PM |
653 | #ifndef CONFIG_USER_ONLY |
654 | static void arm_cpu_set_irq(void *opaque, int irq, int level) | |
655 | { | |
656 | ARMCPU *cpu = opaque; | |
136e67e9 | 657 | CPUARMState *env = &cpu->env; |
7c1840b6 | 658 | CPUState *cs = CPU(cpu); |
136e67e9 EI |
659 | static const int mask[] = { |
660 | [ARM_CPU_IRQ] = CPU_INTERRUPT_HARD, | |
661 | [ARM_CPU_FIQ] = CPU_INTERRUPT_FIQ, | |
662 | [ARM_CPU_VIRQ] = CPU_INTERRUPT_VIRQ, | |
663 | [ARM_CPU_VFIQ] = CPU_INTERRUPT_VFIQ | |
664 | }; | |
7c1840b6 | 665 | |
ed89f078 PM |
666 | if (level) { |
667 | env->irq_line_state |= mask[irq]; | |
668 | } else { | |
669 | env->irq_line_state &= ~mask[irq]; | |
670 | } | |
671 | ||
7c1840b6 | 672 | switch (irq) { |
136e67e9 | 673 | case ARM_CPU_VIRQ: |
89430fc6 PM |
674 | assert(arm_feature(env, ARM_FEATURE_EL2)); |
675 | arm_cpu_update_virq(cpu); | |
676 | break; | |
136e67e9 | 677 | case ARM_CPU_VFIQ: |
f128bf29 | 678 | assert(arm_feature(env, ARM_FEATURE_EL2)); |
89430fc6 PM |
679 | arm_cpu_update_vfiq(cpu); |
680 | break; | |
136e67e9 | 681 | case ARM_CPU_IRQ: |
7c1840b6 PM |
682 | case ARM_CPU_FIQ: |
683 | if (level) { | |
136e67e9 | 684 | cpu_interrupt(cs, mask[irq]); |
7c1840b6 | 685 | } else { |
136e67e9 | 686 | cpu_reset_interrupt(cs, mask[irq]); |
7c1840b6 PM |
687 | } |
688 | break; | |
689 | default: | |
8f6fd322 | 690 | g_assert_not_reached(); |
7c1840b6 PM |
691 | } |
692 | } | |
693 | ||
694 | static void arm_cpu_kvm_set_irq(void *opaque, int irq, int level) | |
695 | { | |
696 | #ifdef CONFIG_KVM | |
697 | ARMCPU *cpu = opaque; | |
ed89f078 | 698 | CPUARMState *env = &cpu->env; |
7c1840b6 | 699 | CPUState *cs = CPU(cpu); |
ed89f078 | 700 | uint32_t linestate_bit; |
f6530926 | 701 | int irq_id; |
7c1840b6 PM |
702 | |
703 | switch (irq) { | |
704 | case ARM_CPU_IRQ: | |
f6530926 | 705 | irq_id = KVM_ARM_IRQ_CPU_IRQ; |
ed89f078 | 706 | linestate_bit = CPU_INTERRUPT_HARD; |
7c1840b6 PM |
707 | break; |
708 | case ARM_CPU_FIQ: | |
f6530926 | 709 | irq_id = KVM_ARM_IRQ_CPU_FIQ; |
ed89f078 | 710 | linestate_bit = CPU_INTERRUPT_FIQ; |
7c1840b6 PM |
711 | break; |
712 | default: | |
8f6fd322 | 713 | g_assert_not_reached(); |
7c1840b6 | 714 | } |
ed89f078 PM |
715 | |
716 | if (level) { | |
717 | env->irq_line_state |= linestate_bit; | |
718 | } else { | |
719 | env->irq_line_state &= ~linestate_bit; | |
720 | } | |
f6530926 | 721 | kvm_arm_set_irq(cs->cpu_index, KVM_ARM_IRQ_TYPE_CPU, irq_id, !!level); |
7c1840b6 PM |
722 | #endif |
723 | } | |
84f2bed3 | 724 | |
ed50ff78 | 725 | static bool arm_cpu_virtio_is_big_endian(CPUState *cs) |
84f2bed3 PS |
726 | { |
727 | ARMCPU *cpu = ARM_CPU(cs); | |
728 | CPUARMState *env = &cpu->env; | |
84f2bed3 PS |
729 | |
730 | cpu_synchronize_state(cs); | |
ed50ff78 | 731 | return arm_cpu_data_is_big_endian(env); |
84f2bed3 PS |
732 | } |
733 | ||
7c1840b6 PM |
734 | #endif |
735 | ||
48440620 PC |
736 | static int |
737 | print_insn_thumb1(bfd_vma pc, disassemble_info *info) | |
738 | { | |
739 | return print_insn_arm(pc | 1, info); | |
740 | } | |
741 | ||
742 | static void arm_disas_set_info(CPUState *cpu, disassemble_info *info) | |
743 | { | |
744 | ARMCPU *ac = ARM_CPU(cpu); | |
745 | CPUARMState *env = &ac->env; | |
7bcdbf51 | 746 | bool sctlr_b; |
48440620 PC |
747 | |
748 | if (is_a64(env)) { | |
749 | /* We might not be compiled with the A64 disassembler | |
750 | * because it needs a C++ compiler. Leave print_insn | |
751 | * unset in this case to use the caller default behaviour. | |
752 | */ | |
753 | #if defined(CONFIG_ARM_A64_DIS) | |
754 | info->print_insn = print_insn_arm_a64; | |
755 | #endif | |
110f6c70 | 756 | info->cap_arch = CS_ARCH_ARM64; |
15fa1a0a RH |
757 | info->cap_insn_unit = 4; |
758 | info->cap_insn_split = 4; | |
48440620 | 759 | } else { |
110f6c70 RH |
760 | int cap_mode; |
761 | if (env->thumb) { | |
762 | info->print_insn = print_insn_thumb1; | |
15fa1a0a RH |
763 | info->cap_insn_unit = 2; |
764 | info->cap_insn_split = 4; | |
110f6c70 RH |
765 | cap_mode = CS_MODE_THUMB; |
766 | } else { | |
767 | info->print_insn = print_insn_arm; | |
15fa1a0a RH |
768 | info->cap_insn_unit = 4; |
769 | info->cap_insn_split = 4; | |
110f6c70 RH |
770 | cap_mode = CS_MODE_ARM; |
771 | } | |
772 | if (arm_feature(env, ARM_FEATURE_V8)) { | |
773 | cap_mode |= CS_MODE_V8; | |
774 | } | |
775 | if (arm_feature(env, ARM_FEATURE_M)) { | |
776 | cap_mode |= CS_MODE_MCLASS; | |
777 | } | |
778 | info->cap_arch = CS_ARCH_ARM; | |
779 | info->cap_mode = cap_mode; | |
48440620 | 780 | } |
7bcdbf51 RH |
781 | |
782 | sctlr_b = arm_sctlr_b(env); | |
783 | if (bswap_code(sctlr_b)) { | |
48440620 PC |
784 | #ifdef TARGET_WORDS_BIGENDIAN |
785 | info->endian = BFD_ENDIAN_LITTLE; | |
786 | #else | |
787 | info->endian = BFD_ENDIAN_BIG; | |
788 | #endif | |
789 | } | |
f7478a92 | 790 | info->flags &= ~INSN_ARM_BE32; |
7bcdbf51 RH |
791 | #ifndef CONFIG_USER_ONLY |
792 | if (sctlr_b) { | |
f7478a92 JB |
793 | info->flags |= INSN_ARM_BE32; |
794 | } | |
7bcdbf51 | 795 | #endif |
48440620 PC |
796 | } |
797 | ||
86480615 PMD |
798 | #ifdef TARGET_AARCH64 |
799 | ||
800 | static void aarch64_cpu_dump_state(CPUState *cs, FILE *f, int flags) | |
801 | { | |
802 | ARMCPU *cpu = ARM_CPU(cs); | |
803 | CPUARMState *env = &cpu->env; | |
804 | uint32_t psr = pstate_read(env); | |
805 | int i; | |
806 | int el = arm_current_el(env); | |
807 | const char *ns_status; | |
808 | ||
809 | qemu_fprintf(f, " PC=%016" PRIx64 " ", env->pc); | |
810 | for (i = 0; i < 32; i++) { | |
811 | if (i == 31) { | |
812 | qemu_fprintf(f, " SP=%016" PRIx64 "\n", env->xregs[i]); | |
813 | } else { | |
814 | qemu_fprintf(f, "X%02d=%016" PRIx64 "%s", i, env->xregs[i], | |
815 | (i + 2) % 3 ? " " : "\n"); | |
816 | } | |
817 | } | |
818 | ||
819 | if (arm_feature(env, ARM_FEATURE_EL3) && el != 3) { | |
820 | ns_status = env->cp15.scr_el3 & SCR_NS ? "NS " : "S "; | |
821 | } else { | |
822 | ns_status = ""; | |
823 | } | |
824 | qemu_fprintf(f, "PSTATE=%08x %c%c%c%c %sEL%d%c", | |
825 | psr, | |
826 | psr & PSTATE_N ? 'N' : '-', | |
827 | psr & PSTATE_Z ? 'Z' : '-', | |
828 | psr & PSTATE_C ? 'C' : '-', | |
829 | psr & PSTATE_V ? 'V' : '-', | |
830 | ns_status, | |
831 | el, | |
832 | psr & PSTATE_SP ? 'h' : 't'); | |
833 | ||
834 | if (cpu_isar_feature(aa64_bti, cpu)) { | |
835 | qemu_fprintf(f, " BTYPE=%d", (psr & PSTATE_BTYPE) >> 10); | |
836 | } | |
837 | if (!(flags & CPU_DUMP_FPU)) { | |
838 | qemu_fprintf(f, "\n"); | |
839 | return; | |
840 | } | |
841 | if (fp_exception_el(env, el) != 0) { | |
842 | qemu_fprintf(f, " FPU disabled\n"); | |
843 | return; | |
844 | } | |
845 | qemu_fprintf(f, " FPCR=%08x FPSR=%08x\n", | |
846 | vfp_get_fpcr(env), vfp_get_fpsr(env)); | |
847 | ||
848 | if (cpu_isar_feature(aa64_sve, cpu) && sve_exception_el(env, el) == 0) { | |
849 | int j, zcr_len = sve_zcr_len_for_el(env, el); | |
850 | ||
851 | for (i = 0; i <= FFR_PRED_NUM; i++) { | |
852 | bool eol; | |
853 | if (i == FFR_PRED_NUM) { | |
854 | qemu_fprintf(f, "FFR="); | |
855 | /* It's last, so end the line. */ | |
856 | eol = true; | |
857 | } else { | |
858 | qemu_fprintf(f, "P%02d=", i); | |
859 | switch (zcr_len) { | |
860 | case 0: | |
861 | eol = i % 8 == 7; | |
862 | break; | |
863 | case 1: | |
864 | eol = i % 6 == 5; | |
865 | break; | |
866 | case 2: | |
867 | case 3: | |
868 | eol = i % 3 == 2; | |
869 | break; | |
870 | default: | |
871 | /* More than one quadword per predicate. */ | |
872 | eol = true; | |
873 | break; | |
874 | } | |
875 | } | |
876 | for (j = zcr_len / 4; j >= 0; j--) { | |
877 | int digits; | |
878 | if (j * 4 + 4 <= zcr_len + 1) { | |
879 | digits = 16; | |
880 | } else { | |
881 | digits = (zcr_len % 4 + 1) * 4; | |
882 | } | |
883 | qemu_fprintf(f, "%0*" PRIx64 "%s", digits, | |
884 | env->vfp.pregs[i].p[j], | |
885 | j ? ":" : eol ? "\n" : " "); | |
886 | } | |
887 | } | |
888 | ||
889 | for (i = 0; i < 32; i++) { | |
890 | if (zcr_len == 0) { | |
891 | qemu_fprintf(f, "Z%02d=%016" PRIx64 ":%016" PRIx64 "%s", | |
892 | i, env->vfp.zregs[i].d[1], | |
893 | env->vfp.zregs[i].d[0], i & 1 ? "\n" : " "); | |
894 | } else if (zcr_len == 1) { | |
895 | qemu_fprintf(f, "Z%02d=%016" PRIx64 ":%016" PRIx64 | |
896 | ":%016" PRIx64 ":%016" PRIx64 "\n", | |
897 | i, env->vfp.zregs[i].d[3], env->vfp.zregs[i].d[2], | |
898 | env->vfp.zregs[i].d[1], env->vfp.zregs[i].d[0]); | |
899 | } else { | |
900 | for (j = zcr_len; j >= 0; j--) { | |
901 | bool odd = (zcr_len - j) % 2 != 0; | |
902 | if (j == zcr_len) { | |
903 | qemu_fprintf(f, "Z%02d[%x-%x]=", i, j, j - 1); | |
904 | } else if (!odd) { | |
905 | if (j > 0) { | |
906 | qemu_fprintf(f, " [%x-%x]=", j, j - 1); | |
907 | } else { | |
908 | qemu_fprintf(f, " [%x]=", j); | |
909 | } | |
910 | } | |
911 | qemu_fprintf(f, "%016" PRIx64 ":%016" PRIx64 "%s", | |
912 | env->vfp.zregs[i].d[j * 2 + 1], | |
913 | env->vfp.zregs[i].d[j * 2], | |
914 | odd || j == 0 ? "\n" : ":"); | |
915 | } | |
916 | } | |
917 | } | |
918 | } else { | |
919 | for (i = 0; i < 32; i++) { | |
920 | uint64_t *q = aa64_vfp_qreg(env, i); | |
921 | qemu_fprintf(f, "Q%02d=%016" PRIx64 ":%016" PRIx64 "%s", | |
922 | i, q[1], q[0], (i & 1 ? "\n" : " ")); | |
923 | } | |
924 | } | |
925 | } | |
926 | ||
927 | #else | |
928 | ||
929 | static inline void aarch64_cpu_dump_state(CPUState *cs, FILE *f, int flags) | |
930 | { | |
931 | g_assert_not_reached(); | |
932 | } | |
933 | ||
934 | #endif | |
935 | ||
936 | static void arm_cpu_dump_state(CPUState *cs, FILE *f, int flags) | |
937 | { | |
938 | ARMCPU *cpu = ARM_CPU(cs); | |
939 | CPUARMState *env = &cpu->env; | |
940 | int i; | |
941 | ||
942 | if (is_a64(env)) { | |
943 | aarch64_cpu_dump_state(cs, f, flags); | |
944 | return; | |
945 | } | |
946 | ||
947 | for (i = 0; i < 16; i++) { | |
948 | qemu_fprintf(f, "R%02d=%08x", i, env->regs[i]); | |
949 | if ((i % 4) == 3) { | |
950 | qemu_fprintf(f, "\n"); | |
951 | } else { | |
952 | qemu_fprintf(f, " "); | |
953 | } | |
954 | } | |
955 | ||
956 | if (arm_feature(env, ARM_FEATURE_M)) { | |
957 | uint32_t xpsr = xpsr_read(env); | |
958 | const char *mode; | |
959 | const char *ns_status = ""; | |
960 | ||
961 | if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { | |
962 | ns_status = env->v7m.secure ? "S " : "NS "; | |
963 | } | |
964 | ||
965 | if (xpsr & XPSR_EXCP) { | |
966 | mode = "handler"; | |
967 | } else { | |
968 | if (env->v7m.control[env->v7m.secure] & R_V7M_CONTROL_NPRIV_MASK) { | |
969 | mode = "unpriv-thread"; | |
970 | } else { | |
971 | mode = "priv-thread"; | |
972 | } | |
973 | } | |
974 | ||
975 | qemu_fprintf(f, "XPSR=%08x %c%c%c%c %c %s%s\n", | |
976 | xpsr, | |
977 | xpsr & XPSR_N ? 'N' : '-', | |
978 | xpsr & XPSR_Z ? 'Z' : '-', | |
979 | xpsr & XPSR_C ? 'C' : '-', | |
980 | xpsr & XPSR_V ? 'V' : '-', | |
981 | xpsr & XPSR_T ? 'T' : 'A', | |
982 | ns_status, | |
983 | mode); | |
984 | } else { | |
985 | uint32_t psr = cpsr_read(env); | |
986 | const char *ns_status = ""; | |
987 | ||
988 | if (arm_feature(env, ARM_FEATURE_EL3) && | |
989 | (psr & CPSR_M) != ARM_CPU_MODE_MON) { | |
990 | ns_status = env->cp15.scr_el3 & SCR_NS ? "NS " : "S "; | |
991 | } | |
992 | ||
993 | qemu_fprintf(f, "PSR=%08x %c%c%c%c %c %s%s%d\n", | |
994 | psr, | |
995 | psr & CPSR_N ? 'N' : '-', | |
996 | psr & CPSR_Z ? 'Z' : '-', | |
997 | psr & CPSR_C ? 'C' : '-', | |
998 | psr & CPSR_V ? 'V' : '-', | |
999 | psr & CPSR_T ? 'T' : 'A', | |
1000 | ns_status, | |
1001 | aarch32_mode_name(psr), (psr & 0x10) ? 32 : 26); | |
1002 | } | |
1003 | ||
1004 | if (flags & CPU_DUMP_FPU) { | |
1005 | int numvfpregs = 0; | |
a6627f5f RH |
1006 | if (cpu_isar_feature(aa32_simd_r32, cpu)) { |
1007 | numvfpregs = 32; | |
7fbc6a40 | 1008 | } else if (cpu_isar_feature(aa32_vfp_simd, cpu)) { |
a6627f5f | 1009 | numvfpregs = 16; |
86480615 PMD |
1010 | } |
1011 | for (i = 0; i < numvfpregs; i++) { | |
1012 | uint64_t v = *aa32_vfp_dreg(env, i); | |
1013 | qemu_fprintf(f, "s%02d=%08x s%02d=%08x d%02d=%016" PRIx64 "\n", | |
1014 | i * 2, (uint32_t)v, | |
1015 | i * 2 + 1, (uint32_t)(v >> 32), | |
1016 | i, v); | |
1017 | } | |
1018 | qemu_fprintf(f, "FPSCR: %08x\n", vfp_get_fpscr(env)); | |
1019 | } | |
1020 | } | |
1021 | ||
46de5913 IM |
1022 | uint64_t arm_cpu_mp_affinity(int idx, uint8_t clustersz) |
1023 | { | |
1024 | uint32_t Aff1 = idx / clustersz; | |
1025 | uint32_t Aff0 = idx % clustersz; | |
1026 | return (Aff1 << ARM_AFF1_SHIFT) | Aff0; | |
1027 | } | |
1028 | ||
ac87e507 PM |
1029 | static void cpreg_hashtable_data_destroy(gpointer data) |
1030 | { | |
1031 | /* | |
1032 | * Destroy function for cpu->cp_regs hashtable data entries. | |
1033 | * We must free the name string because it was g_strdup()ed in | |
1034 | * add_cpreg_to_hashtable(). It's OK to cast away the 'const' | |
1035 | * from r->name because we know we definitely allocated it. | |
1036 | */ | |
1037 | ARMCPRegInfo *r = data; | |
1038 | ||
1039 | g_free((void *)r->name); | |
1040 | g_free(r); | |
1041 | } | |
1042 | ||
777dc784 PM |
1043 | static void arm_cpu_initfn(Object *obj) |
1044 | { | |
1045 | ARMCPU *cpu = ARM_CPU(obj); | |
1046 | ||
7506ed90 | 1047 | cpu_set_cpustate_pointers(cpu); |
4b6a83fb | 1048 | cpu->cp_regs = g_hash_table_new_full(g_int_hash, g_int_equal, |
ac87e507 | 1049 | g_free, cpreg_hashtable_data_destroy); |
79614b78 | 1050 | |
b5c53d1b | 1051 | QLIST_INIT(&cpu->pre_el_change_hooks); |
08267487 AL |
1052 | QLIST_INIT(&cpu->el_change_hooks); |
1053 | ||
7c1840b6 PM |
1054 | #ifndef CONFIG_USER_ONLY |
1055 | /* Our inbound IRQ and FIQ lines */ | |
1056 | if (kvm_enabled()) { | |
136e67e9 EI |
1057 | /* VIRQ and VFIQ are unused with KVM but we add them to maintain |
1058 | * the same interface as non-KVM CPUs. | |
1059 | */ | |
1060 | qdev_init_gpio_in(DEVICE(cpu), arm_cpu_kvm_set_irq, 4); | |
7c1840b6 | 1061 | } else { |
136e67e9 | 1062 | qdev_init_gpio_in(DEVICE(cpu), arm_cpu_set_irq, 4); |
7c1840b6 | 1063 | } |
55d284af | 1064 | |
55d284af PM |
1065 | qdev_init_gpio_out(DEVICE(cpu), cpu->gt_timer_outputs, |
1066 | ARRAY_SIZE(cpu->gt_timer_outputs)); | |
aa1b3111 PM |
1067 | |
1068 | qdev_init_gpio_out_named(DEVICE(cpu), &cpu->gicv3_maintenance_interrupt, | |
1069 | "gicv3-maintenance-interrupt", 1); | |
07f48730 AJ |
1070 | qdev_init_gpio_out_named(DEVICE(cpu), &cpu->pmu_interrupt, |
1071 | "pmu-interrupt", 1); | |
7c1840b6 PM |
1072 | #endif |
1073 | ||
54d3e3f5 PM |
1074 | /* DTB consumers generally don't in fact care what the 'compatible' |
1075 | * string is, so always provide some string and trust that a hypothetical | |
1076 | * picky DTB consumer will also provide a helpful error message. | |
1077 | */ | |
1078 | cpu->dtb_compatible = "qemu,unknown"; | |
dd032e34 | 1079 | cpu->psci_version = 1; /* By default assume PSCI v0.1 */ |
3541addc | 1080 | cpu->kvm_target = QEMU_KVM_ARM_TARGET_NONE; |
54d3e3f5 | 1081 | |
98128601 RH |
1082 | if (tcg_enabled()) { |
1083 | cpu->psci_version = 2; /* TCG implements PSCI 0.2 */ | |
79614b78 | 1084 | } |
4b6a83fb PM |
1085 | } |
1086 | ||
96eec6b2 AJ |
1087 | static Property arm_cpu_gt_cntfrq_property = |
1088 | DEFINE_PROP_UINT64("cntfrq", ARMCPU, gt_cntfrq_hz, | |
1089 | NANOSECONDS_PER_SECOND / GTIMER_SCALE); | |
1090 | ||
07a5b0d2 | 1091 | static Property arm_cpu_reset_cbar_property = |
f318cec6 | 1092 | DEFINE_PROP_UINT64("reset-cbar", ARMCPU, reset_cbar, 0); |
07a5b0d2 | 1093 | |
68e0a40a AP |
1094 | static Property arm_cpu_reset_hivecs_property = |
1095 | DEFINE_PROP_BOOL("reset-hivecs", ARMCPU, reset_hivecs, false); | |
1096 | ||
3933443e PM |
1097 | static Property arm_cpu_rvbar_property = |
1098 | DEFINE_PROP_UINT64("rvbar", ARMCPU, rvbar, 0); | |
1099 | ||
45ca3a14 | 1100 | #ifndef CONFIG_USER_ONLY |
c25bd18a PM |
1101 | static Property arm_cpu_has_el2_property = |
1102 | DEFINE_PROP_BOOL("has_el2", ARMCPU, has_el2, true); | |
1103 | ||
51942aee GB |
1104 | static Property arm_cpu_has_el3_property = |
1105 | DEFINE_PROP_BOOL("has_el3", ARMCPU, has_el3, true); | |
45ca3a14 | 1106 | #endif |
51942aee | 1107 | |
3a062d57 JB |
1108 | static Property arm_cpu_cfgend_property = |
1109 | DEFINE_PROP_BOOL("cfgend", ARMCPU, cfgend, false); | |
1110 | ||
97a28b0e PM |
1111 | static Property arm_cpu_has_vfp_property = |
1112 | DEFINE_PROP_BOOL("vfp", ARMCPU, has_vfp, true); | |
1113 | ||
1114 | static Property arm_cpu_has_neon_property = | |
1115 | DEFINE_PROP_BOOL("neon", ARMCPU, has_neon, true); | |
1116 | ||
ea90db0a PM |
1117 | static Property arm_cpu_has_dsp_property = |
1118 | DEFINE_PROP_BOOL("dsp", ARMCPU, has_dsp, true); | |
1119 | ||
8f325f56 PC |
1120 | static Property arm_cpu_has_mpu_property = |
1121 | DEFINE_PROP_BOOL("has-mpu", ARMCPU, has_mpu, true); | |
1122 | ||
8d92e26b PM |
1123 | /* This is like DEFINE_PROP_UINT32 but it doesn't set the default value, |
1124 | * because the CPU initfn will have already set cpu->pmsav7_dregion to | |
1125 | * the right value for that particular CPU type, and we don't want | |
1126 | * to override that with an incorrect constant value. | |
1127 | */ | |
3281af81 | 1128 | static Property arm_cpu_pmsav7_dregion_property = |
8d92e26b PM |
1129 | DEFINE_PROP_UNSIGNED_NODEFAULT("pmsav7-dregion", ARMCPU, |
1130 | pmsav7_dregion, | |
1131 | qdev_prop_uint32, uint32_t); | |
3281af81 | 1132 | |
ae502508 AJ |
1133 | static bool arm_get_pmu(Object *obj, Error **errp) |
1134 | { | |
1135 | ARMCPU *cpu = ARM_CPU(obj); | |
1136 | ||
1137 | return cpu->has_pmu; | |
1138 | } | |
1139 | ||
1140 | static void arm_set_pmu(Object *obj, bool value, Error **errp) | |
1141 | { | |
1142 | ARMCPU *cpu = ARM_CPU(obj); | |
1143 | ||
1144 | if (value) { | |
7d20e681 | 1145 | if (kvm_enabled() && !kvm_arm_pmu_supported()) { |
ae502508 AJ |
1146 | error_setg(errp, "'pmu' feature not supported by KVM on this host"); |
1147 | return; | |
1148 | } | |
1149 | set_feature(&cpu->env, ARM_FEATURE_PMU); | |
1150 | } else { | |
1151 | unset_feature(&cpu->env, ARM_FEATURE_PMU); | |
1152 | } | |
1153 | cpu->has_pmu = value; | |
1154 | } | |
1155 | ||
7def8754 AJ |
1156 | unsigned int gt_cntfrq_period_ns(ARMCPU *cpu) |
1157 | { | |
96eec6b2 AJ |
1158 | /* |
1159 | * The exact approach to calculating guest ticks is: | |
1160 | * | |
1161 | * muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), cpu->gt_cntfrq_hz, | |
1162 | * NANOSECONDS_PER_SECOND); | |
1163 | * | |
1164 | * We don't do that. Rather we intentionally use integer division | |
1165 | * truncation below and in the caller for the conversion of host monotonic | |
1166 | * time to guest ticks to provide the exact inverse for the semantics of | |
1167 | * the QEMUTimer scale factor. QEMUTimer's scale facter is an integer, so | |
1168 | * it loses precision when representing frequencies where | |
1169 | * `(NANOSECONDS_PER_SECOND % cpu->gt_cntfrq) > 0` holds. Failing to | |
1170 | * provide an exact inverse leads to scheduling timers with negative | |
1171 | * periods, which in turn leads to sticky behaviour in the guest. | |
1172 | * | |
1173 | * Finally, CNTFRQ is effectively capped at 1GHz to ensure our scale factor | |
1174 | * cannot become zero. | |
1175 | */ | |
7def8754 AJ |
1176 | return NANOSECONDS_PER_SECOND > cpu->gt_cntfrq_hz ? |
1177 | NANOSECONDS_PER_SECOND / cpu->gt_cntfrq_hz : 1; | |
1178 | } | |
1179 | ||
51e5ef45 | 1180 | void arm_cpu_post_init(Object *obj) |
07a5b0d2 PC |
1181 | { |
1182 | ARMCPU *cpu = ARM_CPU(obj); | |
07a5b0d2 | 1183 | |
790a1150 PM |
1184 | /* M profile implies PMSA. We have to do this here rather than |
1185 | * in realize with the other feature-implication checks because | |
1186 | * we look at the PMSA bit to see if we should add some properties. | |
1187 | */ | |
1188 | if (arm_feature(&cpu->env, ARM_FEATURE_M)) { | |
1189 | set_feature(&cpu->env, ARM_FEATURE_PMSA); | |
1190 | } | |
1191 | ||
f318cec6 PM |
1192 | if (arm_feature(&cpu->env, ARM_FEATURE_CBAR) || |
1193 | arm_feature(&cpu->env, ARM_FEATURE_CBAR_RO)) { | |
94d912d1 | 1194 | qdev_property_add_static(DEVICE(obj), &arm_cpu_reset_cbar_property); |
07a5b0d2 | 1195 | } |
68e0a40a AP |
1196 | |
1197 | if (!arm_feature(&cpu->env, ARM_FEATURE_M)) { | |
94d912d1 | 1198 | qdev_property_add_static(DEVICE(obj), &arm_cpu_reset_hivecs_property); |
68e0a40a | 1199 | } |
3933443e PM |
1200 | |
1201 | if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) { | |
94d912d1 | 1202 | qdev_property_add_static(DEVICE(obj), &arm_cpu_rvbar_property); |
3933443e | 1203 | } |
51942aee | 1204 | |
45ca3a14 | 1205 | #ifndef CONFIG_USER_ONLY |
51942aee GB |
1206 | if (arm_feature(&cpu->env, ARM_FEATURE_EL3)) { |
1207 | /* Add the has_el3 state CPU property only if EL3 is allowed. This will | |
1208 | * prevent "has_el3" from existing on CPUs which cannot support EL3. | |
1209 | */ | |
94d912d1 | 1210 | qdev_property_add_static(DEVICE(obj), &arm_cpu_has_el3_property); |
9e273ef2 | 1211 | |
9e273ef2 PM |
1212 | object_property_add_link(obj, "secure-memory", |
1213 | TYPE_MEMORY_REGION, | |
1214 | (Object **)&cpu->secure_memory, | |
1215 | qdev_prop_allow_set_link_before_realize, | |
d2623129 | 1216 | OBJ_PROP_LINK_STRONG); |
51942aee | 1217 | } |
8f325f56 | 1218 | |
c25bd18a | 1219 | if (arm_feature(&cpu->env, ARM_FEATURE_EL2)) { |
94d912d1 | 1220 | qdev_property_add_static(DEVICE(obj), &arm_cpu_has_el2_property); |
c25bd18a | 1221 | } |
45ca3a14 | 1222 | #endif |
c25bd18a | 1223 | |
929e754d | 1224 | if (arm_feature(&cpu->env, ARM_FEATURE_PMU)) { |
ae502508 | 1225 | cpu->has_pmu = true; |
d2623129 | 1226 | object_property_add_bool(obj, "pmu", arm_get_pmu, arm_set_pmu); |
929e754d WH |
1227 | } |
1228 | ||
97a28b0e PM |
1229 | /* |
1230 | * Allow user to turn off VFP and Neon support, but only for TCG -- | |
1231 | * KVM does not currently allow us to lie to the guest about its | |
1232 | * ID/feature registers, so the guest always sees what the host has. | |
1233 | */ | |
7d63183f RH |
1234 | if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64) |
1235 | ? cpu_isar_feature(aa64_fp_simd, cpu) | |
1236 | : cpu_isar_feature(aa32_vfp, cpu)) { | |
97a28b0e PM |
1237 | cpu->has_vfp = true; |
1238 | if (!kvm_enabled()) { | |
94d912d1 | 1239 | qdev_property_add_static(DEVICE(obj), &arm_cpu_has_vfp_property); |
97a28b0e PM |
1240 | } |
1241 | } | |
1242 | ||
1243 | if (arm_feature(&cpu->env, ARM_FEATURE_NEON)) { | |
1244 | cpu->has_neon = true; | |
1245 | if (!kvm_enabled()) { | |
94d912d1 | 1246 | qdev_property_add_static(DEVICE(obj), &arm_cpu_has_neon_property); |
97a28b0e PM |
1247 | } |
1248 | } | |
1249 | ||
ea90db0a PM |
1250 | if (arm_feature(&cpu->env, ARM_FEATURE_M) && |
1251 | arm_feature(&cpu->env, ARM_FEATURE_THUMB_DSP)) { | |
94d912d1 | 1252 | qdev_property_add_static(DEVICE(obj), &arm_cpu_has_dsp_property); |
ea90db0a PM |
1253 | } |
1254 | ||
452a0955 | 1255 | if (arm_feature(&cpu->env, ARM_FEATURE_PMSA)) { |
94d912d1 | 1256 | qdev_property_add_static(DEVICE(obj), &arm_cpu_has_mpu_property); |
3281af81 PC |
1257 | if (arm_feature(&cpu->env, ARM_FEATURE_V7)) { |
1258 | qdev_property_add_static(DEVICE(obj), | |
94d912d1 | 1259 | &arm_cpu_pmsav7_dregion_property); |
3281af81 | 1260 | } |
8f325f56 PC |
1261 | } |
1262 | ||
181962fd PM |
1263 | if (arm_feature(&cpu->env, ARM_FEATURE_M_SECURITY)) { |
1264 | object_property_add_link(obj, "idau", TYPE_IDAU_INTERFACE, &cpu->idau, | |
1265 | qdev_prop_allow_set_link_before_realize, | |
d2623129 | 1266 | OBJ_PROP_LINK_STRONG); |
f9f62e4c PM |
1267 | /* |
1268 | * M profile: initial value of the Secure VTOR. We can't just use | |
1269 | * a simple DEFINE_PROP_UINT32 for this because we want to permit | |
1270 | * the property to be set after realize. | |
1271 | */ | |
64a7b8de FF |
1272 | object_property_add_uint32_ptr(obj, "init-svtor", |
1273 | &cpu->init_svtor, | |
d2623129 | 1274 | OBJ_PROP_FLAG_READWRITE); |
181962fd | 1275 | } |
7cda2149 PM |
1276 | if (arm_feature(&cpu->env, ARM_FEATURE_M)) { |
1277 | /* | |
1278 | * Initial value of the NS VTOR (for cores without the Security | |
1279 | * extension, this is the only VTOR) | |
1280 | */ | |
1281 | object_property_add_uint32_ptr(obj, "init-nsvtor", | |
1282 | &cpu->init_nsvtor, | |
1283 | OBJ_PROP_FLAG_READWRITE); | |
1284 | } | |
181962fd | 1285 | |
94d912d1 | 1286 | qdev_property_add_static(DEVICE(obj), &arm_cpu_cfgend_property); |
96eec6b2 AJ |
1287 | |
1288 | if (arm_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER)) { | |
94d912d1 | 1289 | qdev_property_add_static(DEVICE(cpu), &arm_cpu_gt_cntfrq_property); |
96eec6b2 | 1290 | } |
9e6f8d8a | 1291 | |
1292 | if (kvm_enabled()) { | |
1293 | kvm_arm_add_vcpu_properties(obj); | |
1294 | } | |
8bce44a2 RH |
1295 | |
1296 | #ifndef CONFIG_USER_ONLY | |
1297 | if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64) && | |
1298 | cpu_isar_feature(aa64_mte, cpu)) { | |
1299 | object_property_add_link(obj, "tag-memory", | |
1300 | TYPE_MEMORY_REGION, | |
1301 | (Object **)&cpu->tag_memory, | |
1302 | qdev_prop_allow_set_link_before_realize, | |
1303 | OBJ_PROP_LINK_STRONG); | |
1304 | ||
1305 | if (arm_feature(&cpu->env, ARM_FEATURE_EL3)) { | |
1306 | object_property_add_link(obj, "secure-tag-memory", | |
1307 | TYPE_MEMORY_REGION, | |
1308 | (Object **)&cpu->secure_tag_memory, | |
1309 | qdev_prop_allow_set_link_before_realize, | |
1310 | OBJ_PROP_LINK_STRONG); | |
1311 | } | |
1312 | } | |
1313 | #endif | |
07a5b0d2 PC |
1314 | } |
1315 | ||
4b6a83fb PM |
1316 | static void arm_cpu_finalizefn(Object *obj) |
1317 | { | |
1318 | ARMCPU *cpu = ARM_CPU(obj); | |
08267487 AL |
1319 | ARMELChangeHook *hook, *next; |
1320 | ||
4b6a83fb | 1321 | g_hash_table_destroy(cpu->cp_regs); |
08267487 | 1322 | |
b5c53d1b AL |
1323 | QLIST_FOREACH_SAFE(hook, &cpu->pre_el_change_hooks, node, next) { |
1324 | QLIST_REMOVE(hook, node); | |
1325 | g_free(hook); | |
1326 | } | |
08267487 AL |
1327 | QLIST_FOREACH_SAFE(hook, &cpu->el_change_hooks, node, next) { |
1328 | QLIST_REMOVE(hook, node); | |
1329 | g_free(hook); | |
1330 | } | |
4e7beb0c AL |
1331 | #ifndef CONFIG_USER_ONLY |
1332 | if (cpu->pmu_timer) { | |
4e7beb0c AL |
1333 | timer_free(cpu->pmu_timer); |
1334 | } | |
1335 | #endif | |
777dc784 PM |
1336 | } |
1337 | ||
0df9142d AJ |
1338 | void arm_cpu_finalize_features(ARMCPU *cpu, Error **errp) |
1339 | { | |
1340 | Error *local_err = NULL; | |
1341 | ||
1342 | if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) { | |
1343 | arm_cpu_sve_finalize(cpu, &local_err); | |
68970d1e AJ |
1344 | if (local_err != NULL) { |
1345 | error_propagate(errp, local_err); | |
1346 | return; | |
1347 | } | |
eb94284d RH |
1348 | |
1349 | /* | |
1350 | * KVM does not support modifications to this feature. | |
1351 | * We have not registered the cpu properties when KVM | |
1352 | * is in use, so the user will not be able to set them. | |
1353 | */ | |
1354 | if (!kvm_enabled()) { | |
1355 | arm_cpu_pauth_finalize(cpu, &local_err); | |
1356 | if (local_err != NULL) { | |
1357 | error_propagate(errp, local_err); | |
1358 | return; | |
1359 | } | |
1360 | } | |
68970d1e AJ |
1361 | } |
1362 | ||
1363 | if (kvm_enabled()) { | |
1364 | kvm_arm_steal_time_finalize(cpu, &local_err); | |
0df9142d AJ |
1365 | if (local_err != NULL) { |
1366 | error_propagate(errp, local_err); | |
1367 | return; | |
1368 | } | |
1369 | } | |
1370 | } | |
1371 | ||
14969266 | 1372 | static void arm_cpu_realizefn(DeviceState *dev, Error **errp) |
581be094 | 1373 | { |
14a10fc3 | 1374 | CPUState *cs = CPU(dev); |
14969266 AF |
1375 | ARMCPU *cpu = ARM_CPU(dev); |
1376 | ARMCPUClass *acc = ARM_CPU_GET_CLASS(dev); | |
581be094 | 1377 | CPUARMState *env = &cpu->env; |
e97da98f | 1378 | int pagebits; |
ce5b1bbf | 1379 | Error *local_err = NULL; |
0f8d06f1 | 1380 | bool no_aa32 = false; |
ce5b1bbf | 1381 | |
c4487d76 PM |
1382 | /* If we needed to query the host kernel for the CPU features |
1383 | * then it's possible that might have failed in the initfn, but | |
1384 | * this is the first point where we can report it. | |
1385 | */ | |
1386 | if (cpu->host_cpu_probe_failed) { | |
1387 | if (!kvm_enabled()) { | |
1388 | error_setg(errp, "The 'host' CPU type can only be used with KVM"); | |
1389 | } else { | |
1390 | error_setg(errp, "Failed to retrieve host CPU features"); | |
1391 | } | |
1392 | return; | |
1393 | } | |
1394 | ||
95f87565 PM |
1395 | #ifndef CONFIG_USER_ONLY |
1396 | /* The NVIC and M-profile CPU are two halves of a single piece of | |
1397 | * hardware; trying to use one without the other is a command line | |
1398 | * error and will result in segfaults if not caught here. | |
1399 | */ | |
1400 | if (arm_feature(env, ARM_FEATURE_M)) { | |
1401 | if (!env->nvic) { | |
1402 | error_setg(errp, "This board cannot be used with Cortex-M CPUs"); | |
1403 | return; | |
1404 | } | |
1405 | } else { | |
1406 | if (env->nvic) { | |
1407 | error_setg(errp, "This board can only be used with Cortex-M CPUs"); | |
1408 | return; | |
1409 | } | |
1410 | } | |
397cd31f | 1411 | |
96eec6b2 AJ |
1412 | { |
1413 | uint64_t scale; | |
1414 | ||
1415 | if (arm_feature(env, ARM_FEATURE_GENERIC_TIMER)) { | |
1416 | if (!cpu->gt_cntfrq_hz) { | |
1417 | error_setg(errp, "Invalid CNTFRQ: %"PRId64"Hz", | |
1418 | cpu->gt_cntfrq_hz); | |
1419 | return; | |
1420 | } | |
1421 | scale = gt_cntfrq_period_ns(cpu); | |
1422 | } else { | |
1423 | scale = GTIMER_SCALE; | |
1424 | } | |
1425 | ||
1426 | cpu->gt_timer[GTIMER_PHYS] = timer_new(QEMU_CLOCK_VIRTUAL, scale, | |
1427 | arm_gt_ptimer_cb, cpu); | |
1428 | cpu->gt_timer[GTIMER_VIRT] = timer_new(QEMU_CLOCK_VIRTUAL, scale, | |
1429 | arm_gt_vtimer_cb, cpu); | |
1430 | cpu->gt_timer[GTIMER_HYP] = timer_new(QEMU_CLOCK_VIRTUAL, scale, | |
1431 | arm_gt_htimer_cb, cpu); | |
1432 | cpu->gt_timer[GTIMER_SEC] = timer_new(QEMU_CLOCK_VIRTUAL, scale, | |
1433 | arm_gt_stimer_cb, cpu); | |
8c94b071 RH |
1434 | cpu->gt_timer[GTIMER_HYPVIRT] = timer_new(QEMU_CLOCK_VIRTUAL, scale, |
1435 | arm_gt_hvtimer_cb, cpu); | |
96eec6b2 | 1436 | } |
95f87565 PM |
1437 | #endif |
1438 | ||
ce5b1bbf LV |
1439 | cpu_exec_realizefn(cs, &local_err); |
1440 | if (local_err != NULL) { | |
1441 | error_propagate(errp, local_err); | |
1442 | return; | |
1443 | } | |
14969266 | 1444 | |
0df9142d AJ |
1445 | arm_cpu_finalize_features(cpu, &local_err); |
1446 | if (local_err != NULL) { | |
1447 | error_propagate(errp, local_err); | |
1448 | return; | |
1449 | } | |
1450 | ||
97a28b0e PM |
1451 | if (arm_feature(env, ARM_FEATURE_AARCH64) && |
1452 | cpu->has_vfp != cpu->has_neon) { | |
1453 | /* | |
1454 | * This is an architectural requirement for AArch64; AArch32 is | |
1455 | * more flexible and permits VFP-no-Neon and Neon-no-VFP. | |
1456 | */ | |
1457 | error_setg(errp, | |
1458 | "AArch64 CPUs must have both VFP and Neon or neither"); | |
1459 | return; | |
1460 | } | |
1461 | ||
1462 | if (!cpu->has_vfp) { | |
1463 | uint64_t t; | |
1464 | uint32_t u; | |
1465 | ||
97a28b0e PM |
1466 | t = cpu->isar.id_aa64isar1; |
1467 | t = FIELD_DP64(t, ID_AA64ISAR1, JSCVT, 0); | |
1468 | cpu->isar.id_aa64isar1 = t; | |
1469 | ||
1470 | t = cpu->isar.id_aa64pfr0; | |
1471 | t = FIELD_DP64(t, ID_AA64PFR0, FP, 0xf); | |
1472 | cpu->isar.id_aa64pfr0 = t; | |
1473 | ||
1474 | u = cpu->isar.id_isar6; | |
1475 | u = FIELD_DP32(u, ID_ISAR6, JSCVT, 0); | |
3c93dfa4 | 1476 | u = FIELD_DP32(u, ID_ISAR6, BF16, 0); |
97a28b0e PM |
1477 | cpu->isar.id_isar6 = u; |
1478 | ||
1479 | u = cpu->isar.mvfr0; | |
1480 | u = FIELD_DP32(u, MVFR0, FPSP, 0); | |
1481 | u = FIELD_DP32(u, MVFR0, FPDP, 0); | |
97a28b0e PM |
1482 | u = FIELD_DP32(u, MVFR0, FPDIVIDE, 0); |
1483 | u = FIELD_DP32(u, MVFR0, FPSQRT, 0); | |
97a28b0e | 1484 | u = FIELD_DP32(u, MVFR0, FPROUND, 0); |
532a3af5 PM |
1485 | if (!arm_feature(env, ARM_FEATURE_M)) { |
1486 | u = FIELD_DP32(u, MVFR0, FPTRAP, 0); | |
1487 | u = FIELD_DP32(u, MVFR0, FPSHVEC, 0); | |
1488 | } | |
97a28b0e PM |
1489 | cpu->isar.mvfr0 = u; |
1490 | ||
1491 | u = cpu->isar.mvfr1; | |
1492 | u = FIELD_DP32(u, MVFR1, FPFTZ, 0); | |
1493 | u = FIELD_DP32(u, MVFR1, FPDNAN, 0); | |
1494 | u = FIELD_DP32(u, MVFR1, FPHP, 0); | |
532a3af5 PM |
1495 | if (arm_feature(env, ARM_FEATURE_M)) { |
1496 | u = FIELD_DP32(u, MVFR1, FP16, 0); | |
1497 | } | |
97a28b0e PM |
1498 | cpu->isar.mvfr1 = u; |
1499 | ||
1500 | u = cpu->isar.mvfr2; | |
1501 | u = FIELD_DP32(u, MVFR2, FPMISC, 0); | |
1502 | cpu->isar.mvfr2 = u; | |
1503 | } | |
1504 | ||
1505 | if (!cpu->has_neon) { | |
1506 | uint64_t t; | |
1507 | uint32_t u; | |
1508 | ||
1509 | unset_feature(env, ARM_FEATURE_NEON); | |
1510 | ||
1511 | t = cpu->isar.id_aa64isar0; | |
1512 | t = FIELD_DP64(t, ID_AA64ISAR0, DP, 0); | |
1513 | cpu->isar.id_aa64isar0 = t; | |
1514 | ||
1515 | t = cpu->isar.id_aa64isar1; | |
1516 | t = FIELD_DP64(t, ID_AA64ISAR1, FCMA, 0); | |
3c93dfa4 | 1517 | t = FIELD_DP64(t, ID_AA64ISAR1, BF16, 0); |
f8680aaa | 1518 | t = FIELD_DP64(t, ID_AA64ISAR1, I8MM, 0); |
97a28b0e PM |
1519 | cpu->isar.id_aa64isar1 = t; |
1520 | ||
1521 | t = cpu->isar.id_aa64pfr0; | |
1522 | t = FIELD_DP64(t, ID_AA64PFR0, ADVSIMD, 0xf); | |
1523 | cpu->isar.id_aa64pfr0 = t; | |
1524 | ||
1525 | u = cpu->isar.id_isar5; | |
1526 | u = FIELD_DP32(u, ID_ISAR5, RDM, 0); | |
1527 | u = FIELD_DP32(u, ID_ISAR5, VCMA, 0); | |
1528 | cpu->isar.id_isar5 = u; | |
1529 | ||
1530 | u = cpu->isar.id_isar6; | |
1531 | u = FIELD_DP32(u, ID_ISAR6, DP, 0); | |
1532 | u = FIELD_DP32(u, ID_ISAR6, FHM, 0); | |
3c93dfa4 | 1533 | u = FIELD_DP32(u, ID_ISAR6, BF16, 0); |
f8680aaa | 1534 | u = FIELD_DP32(u, ID_ISAR6, I8MM, 0); |
97a28b0e PM |
1535 | cpu->isar.id_isar6 = u; |
1536 | ||
532a3af5 PM |
1537 | if (!arm_feature(env, ARM_FEATURE_M)) { |
1538 | u = cpu->isar.mvfr1; | |
1539 | u = FIELD_DP32(u, MVFR1, SIMDLS, 0); | |
1540 | u = FIELD_DP32(u, MVFR1, SIMDINT, 0); | |
1541 | u = FIELD_DP32(u, MVFR1, SIMDSP, 0); | |
1542 | u = FIELD_DP32(u, MVFR1, SIMDHP, 0); | |
1543 | cpu->isar.mvfr1 = u; | |
1544 | ||
1545 | u = cpu->isar.mvfr2; | |
1546 | u = FIELD_DP32(u, MVFR2, SIMDMISC, 0); | |
1547 | cpu->isar.mvfr2 = u; | |
1548 | } | |
97a28b0e PM |
1549 | } |
1550 | ||
1551 | if (!cpu->has_neon && !cpu->has_vfp) { | |
1552 | uint64_t t; | |
1553 | uint32_t u; | |
1554 | ||
1555 | t = cpu->isar.id_aa64isar0; | |
1556 | t = FIELD_DP64(t, ID_AA64ISAR0, FHM, 0); | |
1557 | cpu->isar.id_aa64isar0 = t; | |
1558 | ||
1559 | t = cpu->isar.id_aa64isar1; | |
1560 | t = FIELD_DP64(t, ID_AA64ISAR1, FRINTTS, 0); | |
1561 | cpu->isar.id_aa64isar1 = t; | |
1562 | ||
1563 | u = cpu->isar.mvfr0; | |
1564 | u = FIELD_DP32(u, MVFR0, SIMDREG, 0); | |
1565 | cpu->isar.mvfr0 = u; | |
c52881bb RH |
1566 | |
1567 | /* Despite the name, this field covers both VFP and Neon */ | |
1568 | u = cpu->isar.mvfr1; | |
1569 | u = FIELD_DP32(u, MVFR1, SIMDFMAC, 0); | |
1570 | cpu->isar.mvfr1 = u; | |
97a28b0e PM |
1571 | } |
1572 | ||
ea90db0a PM |
1573 | if (arm_feature(env, ARM_FEATURE_M) && !cpu->has_dsp) { |
1574 | uint32_t u; | |
1575 | ||
1576 | unset_feature(env, ARM_FEATURE_THUMB_DSP); | |
1577 | ||
1578 | u = cpu->isar.id_isar1; | |
1579 | u = FIELD_DP32(u, ID_ISAR1, EXTEND, 1); | |
1580 | cpu->isar.id_isar1 = u; | |
1581 | ||
1582 | u = cpu->isar.id_isar2; | |
1583 | u = FIELD_DP32(u, ID_ISAR2, MULTU, 1); | |
1584 | u = FIELD_DP32(u, ID_ISAR2, MULTS, 1); | |
1585 | cpu->isar.id_isar2 = u; | |
1586 | ||
1587 | u = cpu->isar.id_isar3; | |
1588 | u = FIELD_DP32(u, ID_ISAR3, SIMD, 1); | |
1589 | u = FIELD_DP32(u, ID_ISAR3, SATURATE, 0); | |
1590 | cpu->isar.id_isar3 = u; | |
1591 | } | |
1592 | ||
581be094 | 1593 | /* Some features automatically imply others: */ |
81e69fb0 | 1594 | if (arm_feature(env, ARM_FEATURE_V8)) { |
5256df88 RH |
1595 | if (arm_feature(env, ARM_FEATURE_M)) { |
1596 | set_feature(env, ARM_FEATURE_V7); | |
1597 | } else { | |
1598 | set_feature(env, ARM_FEATURE_V7VE); | |
1599 | } | |
5110e683 | 1600 | } |
0f8d06f1 RH |
1601 | |
1602 | /* | |
1603 | * There exist AArch64 cpus without AArch32 support. When KVM | |
1604 | * queries ID_ISAR0_EL1 on such a host, the value is UNKNOWN. | |
1605 | * Similarly, we cannot check ID_AA64PFR0 without AArch64 support. | |
8f4821d7 PM |
1606 | * As a general principle, we also do not make ID register |
1607 | * consistency checks anywhere unless using TCG, because only | |
1608 | * for TCG would a consistency-check failure be a QEMU bug. | |
0f8d06f1 RH |
1609 | */ |
1610 | if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) { | |
1611 | no_aa32 = !cpu_isar_feature(aa64_aa32, cpu); | |
1612 | } | |
1613 | ||
5110e683 AL |
1614 | if (arm_feature(env, ARM_FEATURE_V7VE)) { |
1615 | /* v7 Virtualization Extensions. In real hardware this implies | |
1616 | * EL2 and also the presence of the Security Extensions. | |
1617 | * For QEMU, for backwards-compatibility we implement some | |
1618 | * CPUs or CPU configs which have no actual EL2 or EL3 but do | |
1619 | * include the various other features that V7VE implies. | |
1620 | * Presence of EL2 itself is ARM_FEATURE_EL2, and of the | |
1621 | * Security Extensions is ARM_FEATURE_EL3. | |
1622 | */ | |
873b73c0 PM |
1623 | assert(!tcg_enabled() || no_aa32 || |
1624 | cpu_isar_feature(aa32_arm_div, cpu)); | |
81e69fb0 | 1625 | set_feature(env, ARM_FEATURE_LPAE); |
5110e683 | 1626 | set_feature(env, ARM_FEATURE_V7); |
81e69fb0 | 1627 | } |
581be094 PM |
1628 | if (arm_feature(env, ARM_FEATURE_V7)) { |
1629 | set_feature(env, ARM_FEATURE_VAPA); | |
1630 | set_feature(env, ARM_FEATURE_THUMB2); | |
81bdde9d | 1631 | set_feature(env, ARM_FEATURE_MPIDR); |
581be094 PM |
1632 | if (!arm_feature(env, ARM_FEATURE_M)) { |
1633 | set_feature(env, ARM_FEATURE_V6K); | |
1634 | } else { | |
1635 | set_feature(env, ARM_FEATURE_V6); | |
1636 | } | |
91db4642 CLG |
1637 | |
1638 | /* Always define VBAR for V7 CPUs even if it doesn't exist in | |
1639 | * non-EL3 configs. This is needed by some legacy boards. | |
1640 | */ | |
1641 | set_feature(env, ARM_FEATURE_VBAR); | |
581be094 PM |
1642 | } |
1643 | if (arm_feature(env, ARM_FEATURE_V6K)) { | |
1644 | set_feature(env, ARM_FEATURE_V6); | |
1645 | set_feature(env, ARM_FEATURE_MVFR); | |
1646 | } | |
1647 | if (arm_feature(env, ARM_FEATURE_V6)) { | |
1648 | set_feature(env, ARM_FEATURE_V5); | |
1649 | if (!arm_feature(env, ARM_FEATURE_M)) { | |
873b73c0 PM |
1650 | assert(!tcg_enabled() || no_aa32 || |
1651 | cpu_isar_feature(aa32_jazelle, cpu)); | |
581be094 PM |
1652 | set_feature(env, ARM_FEATURE_AUXCR); |
1653 | } | |
1654 | } | |
1655 | if (arm_feature(env, ARM_FEATURE_V5)) { | |
1656 | set_feature(env, ARM_FEATURE_V4T); | |
1657 | } | |
de9b05b8 | 1658 | if (arm_feature(env, ARM_FEATURE_LPAE)) { |
bdcc150d | 1659 | set_feature(env, ARM_FEATURE_V7MP); |
de9b05b8 | 1660 | } |
f318cec6 PM |
1661 | if (arm_feature(env, ARM_FEATURE_CBAR_RO)) { |
1662 | set_feature(env, ARM_FEATURE_CBAR); | |
1663 | } | |
62b44f05 AR |
1664 | if (arm_feature(env, ARM_FEATURE_THUMB2) && |
1665 | !arm_feature(env, ARM_FEATURE_M)) { | |
1666 | set_feature(env, ARM_FEATURE_THUMB_DSP); | |
1667 | } | |
2ceb98c0 | 1668 | |
ea7ac69d PM |
1669 | /* |
1670 | * We rely on no XScale CPU having VFP so we can use the same bits in the | |
1671 | * TB flags field for VECSTRIDE and XSCALE_CPAR. | |
1672 | */ | |
7d63183f RH |
1673 | assert(arm_feature(&cpu->env, ARM_FEATURE_AARCH64) || |
1674 | !cpu_isar_feature(aa32_vfp_simd, cpu) || | |
1675 | !arm_feature(env, ARM_FEATURE_XSCALE)); | |
ea7ac69d | 1676 | |
e97da98f PM |
1677 | if (arm_feature(env, ARM_FEATURE_V7) && |
1678 | !arm_feature(env, ARM_FEATURE_M) && | |
452a0955 | 1679 | !arm_feature(env, ARM_FEATURE_PMSA)) { |
e97da98f PM |
1680 | /* v7VMSA drops support for the old ARMv5 tiny pages, so we |
1681 | * can use 4K pages. | |
1682 | */ | |
1683 | pagebits = 12; | |
1684 | } else { | |
1685 | /* For CPUs which might have tiny 1K pages, or which have an | |
1686 | * MPU and might have small region sizes, stick with 1K pages. | |
1687 | */ | |
1688 | pagebits = 10; | |
1689 | } | |
1690 | if (!set_preferred_target_page_bits(pagebits)) { | |
1691 | /* This can only ever happen for hotplugging a CPU, or if | |
1692 | * the board code incorrectly creates a CPU which it has | |
1693 | * promised via minimum_page_size that it will not. | |
1694 | */ | |
1695 | error_setg(errp, "This CPU requires a smaller page size than the " | |
1696 | "system is using"); | |
1697 | return; | |
1698 | } | |
1699 | ||
ce5b1bbf LV |
1700 | /* This cpu-id-to-MPIDR affinity is used only for TCG; KVM will override it. |
1701 | * We don't support setting cluster ID ([16..23]) (known as Aff2 | |
1702 | * in later ARM ARM versions), or any of the higher affinity level fields, | |
1703 | * so these bits always RAZ. | |
1704 | */ | |
1705 | if (cpu->mp_affinity == ARM64_AFFINITY_INVALID) { | |
46de5913 IM |
1706 | cpu->mp_affinity = arm_cpu_mp_affinity(cs->cpu_index, |
1707 | ARM_DEFAULT_CPUS_PER_CLUSTER); | |
ce5b1bbf LV |
1708 | } |
1709 | ||
68e0a40a AP |
1710 | if (cpu->reset_hivecs) { |
1711 | cpu->reset_sctlr |= (1 << 13); | |
1712 | } | |
1713 | ||
3a062d57 JB |
1714 | if (cpu->cfgend) { |
1715 | if (arm_feature(&cpu->env, ARM_FEATURE_V7)) { | |
1716 | cpu->reset_sctlr |= SCTLR_EE; | |
1717 | } else { | |
1718 | cpu->reset_sctlr |= SCTLR_B; | |
1719 | } | |
1720 | } | |
1721 | ||
40188188 | 1722 | if (!arm_feature(env, ARM_FEATURE_M) && !cpu->has_el3) { |
51942aee GB |
1723 | /* If the has_el3 CPU property is disabled then we need to disable the |
1724 | * feature. | |
1725 | */ | |
1726 | unset_feature(env, ARM_FEATURE_EL3); | |
1727 | ||
1728 | /* Disable the security extension feature bits in the processor feature | |
3d5c84ff | 1729 | * registers as well. These are id_pfr1[7:4] and id_aa64pfr0[15:12]. |
51942aee | 1730 | */ |
8a130a7b | 1731 | cpu->isar.id_pfr1 &= ~0xf0; |
47576b94 | 1732 | cpu->isar.id_aa64pfr0 &= ~0xf000; |
51942aee GB |
1733 | } |
1734 | ||
c25bd18a PM |
1735 | if (!cpu->has_el2) { |
1736 | unset_feature(env, ARM_FEATURE_EL2); | |
1737 | } | |
1738 | ||
d6f02ce3 | 1739 | if (!cpu->has_pmu) { |
929e754d | 1740 | unset_feature(env, ARM_FEATURE_PMU); |
57a4a11b AL |
1741 | } |
1742 | if (arm_feature(env, ARM_FEATURE_PMU)) { | |
bf8d0969 | 1743 | pmu_init(cpu); |
57a4a11b AL |
1744 | |
1745 | if (!kvm_enabled()) { | |
1746 | arm_register_pre_el_change_hook(cpu, &pmu_pre_el_change, 0); | |
1747 | arm_register_el_change_hook(cpu, &pmu_post_el_change, 0); | |
1748 | } | |
4e7beb0c AL |
1749 | |
1750 | #ifndef CONFIG_USER_ONLY | |
1751 | cpu->pmu_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, arm_pmu_timer_cb, | |
1752 | cpu); | |
1753 | #endif | |
57a4a11b | 1754 | } else { |
2a609df8 PM |
1755 | cpu->isar.id_aa64dfr0 = |
1756 | FIELD_DP64(cpu->isar.id_aa64dfr0, ID_AA64DFR0, PMUVER, 0); | |
a6179538 | 1757 | cpu->isar.id_dfr0 = FIELD_DP32(cpu->isar.id_dfr0, ID_DFR0, PERFMON, 0); |
57a4a11b AL |
1758 | cpu->pmceid0 = 0; |
1759 | cpu->pmceid1 = 0; | |
929e754d WH |
1760 | } |
1761 | ||
3c2f7bb3 PM |
1762 | if (!arm_feature(env, ARM_FEATURE_EL2)) { |
1763 | /* Disable the hypervisor feature bits in the processor feature | |
1764 | * registers if we don't have EL2. These are id_pfr1[15:12] and | |
1765 | * id_aa64pfr0_el1[11:8]. | |
1766 | */ | |
47576b94 | 1767 | cpu->isar.id_aa64pfr0 &= ~0xf00; |
8a130a7b | 1768 | cpu->isar.id_pfr1 &= ~0xf000; |
3c2f7bb3 PM |
1769 | } |
1770 | ||
6f4e1405 RH |
1771 | #ifndef CONFIG_USER_ONLY |
1772 | if (cpu->tag_memory == NULL && cpu_isar_feature(aa64_mte, cpu)) { | |
1773 | /* | |
1774 | * Disable the MTE feature bits if we do not have tag-memory | |
1775 | * provided by the machine. | |
1776 | */ | |
1777 | cpu->isar.id_aa64pfr1 = | |
1778 | FIELD_DP64(cpu->isar.id_aa64pfr1, ID_AA64PFR1, MTE, 0); | |
1779 | } | |
1780 | #endif | |
1781 | ||
f50cd314 PM |
1782 | /* MPU can be configured out of a PMSA CPU either by setting has-mpu |
1783 | * to false or by setting pmsav7-dregion to 0. | |
1784 | */ | |
8f325f56 | 1785 | if (!cpu->has_mpu) { |
f50cd314 PM |
1786 | cpu->pmsav7_dregion = 0; |
1787 | } | |
1788 | if (cpu->pmsav7_dregion == 0) { | |
1789 | cpu->has_mpu = false; | |
8f325f56 PC |
1790 | } |
1791 | ||
452a0955 | 1792 | if (arm_feature(env, ARM_FEATURE_PMSA) && |
3281af81 PC |
1793 | arm_feature(env, ARM_FEATURE_V7)) { |
1794 | uint32_t nr = cpu->pmsav7_dregion; | |
1795 | ||
1796 | if (nr > 0xff) { | |
9af9e0fe | 1797 | error_setg(errp, "PMSAv7 MPU #regions invalid %" PRIu32, nr); |
3281af81 PC |
1798 | return; |
1799 | } | |
6cb0b013 PC |
1800 | |
1801 | if (nr) { | |
0e1a46bb PM |
1802 | if (arm_feature(env, ARM_FEATURE_V8)) { |
1803 | /* PMSAv8 */ | |
62c58ee0 PM |
1804 | env->pmsav8.rbar[M_REG_NS] = g_new0(uint32_t, nr); |
1805 | env->pmsav8.rlar[M_REG_NS] = g_new0(uint32_t, nr); | |
1806 | if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { | |
1807 | env->pmsav8.rbar[M_REG_S] = g_new0(uint32_t, nr); | |
1808 | env->pmsav8.rlar[M_REG_S] = g_new0(uint32_t, nr); | |
1809 | } | |
0e1a46bb PM |
1810 | } else { |
1811 | env->pmsav7.drbar = g_new0(uint32_t, nr); | |
1812 | env->pmsav7.drsr = g_new0(uint32_t, nr); | |
1813 | env->pmsav7.dracr = g_new0(uint32_t, nr); | |
1814 | } | |
6cb0b013 | 1815 | } |
3281af81 PC |
1816 | } |
1817 | ||
9901c576 PM |
1818 | if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { |
1819 | uint32_t nr = cpu->sau_sregion; | |
1820 | ||
1821 | if (nr > 0xff) { | |
1822 | error_setg(errp, "v8M SAU #regions invalid %" PRIu32, nr); | |
1823 | return; | |
1824 | } | |
1825 | ||
1826 | if (nr) { | |
1827 | env->sau.rbar = g_new0(uint32_t, nr); | |
1828 | env->sau.rlar = g_new0(uint32_t, nr); | |
1829 | } | |
1830 | } | |
1831 | ||
91db4642 CLG |
1832 | if (arm_feature(env, ARM_FEATURE_EL3)) { |
1833 | set_feature(env, ARM_FEATURE_VBAR); | |
1834 | } | |
1835 | ||
2ceb98c0 | 1836 | register_cp_regs_for_features(cpu); |
14969266 AF |
1837 | arm_cpu_register_gdb_regs_for_features(cpu); |
1838 | ||
721fae12 PM |
1839 | init_cpreg_list(cpu); |
1840 | ||
9e273ef2 | 1841 | #ifndef CONFIG_USER_ONLY |
cc7d44c2 LX |
1842 | MachineState *ms = MACHINE(qdev_get_machine()); |
1843 | unsigned int smp_cpus = ms->smp.cpus; | |
8bce44a2 | 1844 | bool has_secure = cpu->has_el3 || arm_feature(env, ARM_FEATURE_M_SECURITY); |
cc7d44c2 | 1845 | |
8bce44a2 RH |
1846 | /* |
1847 | * We must set cs->num_ases to the final value before | |
1848 | * the first call to cpu_address_space_init. | |
1849 | */ | |
1850 | if (cpu->tag_memory != NULL) { | |
1851 | cs->num_ases = 3 + has_secure; | |
1852 | } else { | |
1853 | cs->num_ases = 1 + has_secure; | |
1854 | } | |
1d2091bc | 1855 | |
8bce44a2 | 1856 | if (has_secure) { |
9e273ef2 PM |
1857 | if (!cpu->secure_memory) { |
1858 | cpu->secure_memory = cs->memory; | |
1859 | } | |
80ceb07a PX |
1860 | cpu_address_space_init(cs, ARMASIdx_S, "cpu-secure-memory", |
1861 | cpu->secure_memory); | |
9e273ef2 | 1862 | } |
8bce44a2 RH |
1863 | |
1864 | if (cpu->tag_memory != NULL) { | |
1865 | cpu_address_space_init(cs, ARMASIdx_TagNS, "cpu-tag-memory", | |
1866 | cpu->tag_memory); | |
1867 | if (has_secure) { | |
1868 | cpu_address_space_init(cs, ARMASIdx_TagS, "cpu-tag-memory", | |
1869 | cpu->secure_tag_memory); | |
1870 | } | |
8bce44a2 RH |
1871 | } |
1872 | ||
80ceb07a | 1873 | cpu_address_space_init(cs, ARMASIdx_NS, "cpu-memory", cs->memory); |
f9a69711 AF |
1874 | |
1875 | /* No core_count specified, default to smp_cpus. */ | |
1876 | if (cpu->core_count == -1) { | |
1877 | cpu->core_count = smp_cpus; | |
1878 | } | |
9e273ef2 PM |
1879 | #endif |
1880 | ||
a4157b80 RH |
1881 | if (tcg_enabled()) { |
1882 | int dcz_blocklen = 4 << cpu->dcz_blocksize; | |
1883 | ||
1884 | /* | |
1885 | * We only support DCZ blocklen that fits on one page. | |
1886 | * | |
1887 | * Architectually this is always true. However TARGET_PAGE_SIZE | |
1888 | * is variable and, for compatibility with -machine virt-2.7, | |
1889 | * is only 1KiB, as an artifact of legacy ARMv5 subpage support. | |
1890 | * But even then, while the largest architectural DCZ blocklen | |
1891 | * is 2KiB, no cpu actually uses such a large blocklen. | |
1892 | */ | |
1893 | assert(dcz_blocklen <= TARGET_PAGE_SIZE); | |
1894 | ||
1895 | /* | |
1896 | * We only support DCZ blocksize >= 2*TAG_GRANULE, which is to say | |
1897 | * both nibbles of each byte storing tag data may be written at once. | |
1898 | * Since TAG_GRANULE is 16, this means that blocklen must be >= 32. | |
1899 | */ | |
1900 | if (cpu_isar_feature(aa64_mte, cpu)) { | |
1901 | assert(dcz_blocklen >= 2 * TAG_GRANULE); | |
1902 | } | |
1903 | } | |
1904 | ||
14a10fc3 | 1905 | qemu_init_vcpu(cs); |
00d0f7cb | 1906 | cpu_reset(cs); |
14969266 AF |
1907 | |
1908 | acc->parent_realize(dev, errp); | |
581be094 PM |
1909 | } |
1910 | ||
5900d6b2 AF |
1911 | static ObjectClass *arm_cpu_class_by_name(const char *cpu_model) |
1912 | { | |
1913 | ObjectClass *oc; | |
51492fd1 | 1914 | char *typename; |
fb8d6c24 | 1915 | char **cpuname; |
a0032cc5 | 1916 | const char *cpunamestr; |
5900d6b2 | 1917 | |
fb8d6c24 | 1918 | cpuname = g_strsplit(cpu_model, ",", 1); |
a0032cc5 PM |
1919 | cpunamestr = cpuname[0]; |
1920 | #ifdef CONFIG_USER_ONLY | |
1921 | /* For backwards compatibility usermode emulation allows "-cpu any", | |
1922 | * which has the same semantics as "-cpu max". | |
1923 | */ | |
1924 | if (!strcmp(cpunamestr, "any")) { | |
1925 | cpunamestr = "max"; | |
1926 | } | |
1927 | #endif | |
1928 | typename = g_strdup_printf(ARM_CPU_TYPE_NAME("%s"), cpunamestr); | |
51492fd1 | 1929 | oc = object_class_by_name(typename); |
fb8d6c24 | 1930 | g_strfreev(cpuname); |
51492fd1 | 1931 | g_free(typename); |
245fb54d AF |
1932 | if (!oc || !object_class_dynamic_cast(oc, TYPE_ARM_CPU) || |
1933 | object_class_is_abstract(oc)) { | |
5900d6b2 AF |
1934 | return NULL; |
1935 | } | |
1936 | return oc; | |
1937 | } | |
1938 | ||
5de16430 | 1939 | static Property arm_cpu_properties[] = { |
98128601 | 1940 | DEFINE_PROP_UINT32("psci-conduit", ARMCPU, psci_conduit, 0), |
e544f800 | 1941 | DEFINE_PROP_UINT64("midr", ARMCPU, midr, 0), |
ce5b1bbf LV |
1942 | DEFINE_PROP_UINT64("mp-affinity", ARMCPU, |
1943 | mp_affinity, ARM64_AFFINITY_INVALID), | |
15f8b142 | 1944 | DEFINE_PROP_INT32("node-id", ARMCPU, node_id, CPU_UNSET_NUMA_NODE_ID), |
f9a69711 | 1945 | DEFINE_PROP_INT32("core-count", ARMCPU, core_count, -1), |
5de16430 PM |
1946 | DEFINE_PROP_END_OF_LIST() |
1947 | }; | |
1948 | ||
b3820e6c DH |
1949 | static gchar *arm_gdb_arch_name(CPUState *cs) |
1950 | { | |
1951 | ARMCPU *cpu = ARM_CPU(cs); | |
1952 | CPUARMState *env = &cpu->env; | |
1953 | ||
1954 | if (arm_feature(env, ARM_FEATURE_IWMMXT)) { | |
1955 | return g_strdup("iwmmxt"); | |
1956 | } | |
1957 | return g_strdup("arm"); | |
1958 | } | |
1959 | ||
8b80bd28 PMD |
1960 | #ifndef CONFIG_USER_ONLY |
1961 | #include "hw/core/sysemu-cpu-ops.h" | |
1962 | ||
1963 | static const struct SysemuCPUOps arm_sysemu_ops = { | |
08928c6d | 1964 | .get_phys_page_attrs_debug = arm_cpu_get_phys_page_attrs_debug, |
faf39e82 | 1965 | .asidx_from_attrs = arm_asidx_from_attrs, |
715e3c1a PMD |
1966 | .write_elf32_note = arm_cpu_write_elf32_note, |
1967 | .write_elf64_note = arm_cpu_write_elf64_note, | |
da383e02 | 1968 | .virtio_is_big_endian = arm_cpu_virtio_is_big_endian, |
feece4d0 | 1969 | .legacy_vmsd = &vmstate_arm_cpu, |
8b80bd28 PMD |
1970 | }; |
1971 | #endif | |
1972 | ||
78271684 | 1973 | #ifdef CONFIG_TCG |
11906557 | 1974 | static const struct TCGCPUOps arm_tcg_ops = { |
78271684 CF |
1975 | .initialize = arm_translate_init, |
1976 | .synchronize_from_tb = arm_cpu_synchronize_from_tb, | |
1977 | .cpu_exec_interrupt = arm_cpu_exec_interrupt, | |
1978 | .tlb_fill = arm_cpu_tlb_fill, | |
1979 | .debug_excp_handler = arm_debug_excp_handler, | |
1980 | ||
1981 | #if !defined(CONFIG_USER_ONLY) | |
1982 | .do_interrupt = arm_cpu_do_interrupt, | |
1983 | .do_transaction_failed = arm_cpu_do_transaction_failed, | |
1984 | .do_unaligned_access = arm_cpu_do_unaligned_access, | |
1985 | .adjust_watchpoint_address = arm_adjust_watchpoint_address, | |
1986 | .debug_check_watchpoint = arm_debug_check_watchpoint, | |
b00d86bc | 1987 | .debug_check_breakpoint = arm_debug_check_breakpoint, |
78271684 CF |
1988 | #endif /* !CONFIG_USER_ONLY */ |
1989 | }; | |
1990 | #endif /* CONFIG_TCG */ | |
1991 | ||
dec9c2d4 AF |
1992 | static void arm_cpu_class_init(ObjectClass *oc, void *data) |
1993 | { | |
1994 | ARMCPUClass *acc = ARM_CPU_CLASS(oc); | |
1995 | CPUClass *cc = CPU_CLASS(acc); | |
14969266 AF |
1996 | DeviceClass *dc = DEVICE_CLASS(oc); |
1997 | ||
bf853881 PMD |
1998 | device_class_set_parent_realize(dc, arm_cpu_realizefn, |
1999 | &acc->parent_realize); | |
dec9c2d4 | 2000 | |
4f67d30b | 2001 | device_class_set_props(dc, arm_cpu_properties); |
781c67ca | 2002 | device_class_set_parent_reset(dc, arm_cpu_reset, &acc->parent_reset); |
5900d6b2 AF |
2003 | |
2004 | cc->class_by_name = arm_cpu_class_by_name; | |
8c2e1b00 | 2005 | cc->has_work = arm_cpu_has_work; |
878096ee | 2006 | cc->dump_state = arm_cpu_dump_state; |
f45748f1 | 2007 | cc->set_pc = arm_cpu_set_pc; |
5b50e790 AF |
2008 | cc->gdb_read_register = arm_cpu_gdb_read_register; |
2009 | cc->gdb_write_register = arm_cpu_gdb_write_register; | |
7350d553 | 2010 | #ifndef CONFIG_USER_ONLY |
8b80bd28 | 2011 | cc->sysemu_ops = &arm_sysemu_ops; |
00b941e5 | 2012 | #endif |
a0e372f0 | 2013 | cc->gdb_num_core_regs = 26; |
5b24c641 | 2014 | cc->gdb_core_xml_file = "arm-core.xml"; |
b3820e6c | 2015 | cc->gdb_arch_name = arm_gdb_arch_name; |
200bf5b7 | 2016 | cc->gdb_get_dynamic_xml = arm_gdb_get_dynamic_xml; |
2472b6c0 | 2017 | cc->gdb_stop_before_watchpoint = true; |
48440620 | 2018 | cc->disas_set_info = arm_disas_set_info; |
78271684 | 2019 | |
74d7fc7f | 2020 | #ifdef CONFIG_TCG |
78271684 | 2021 | cc->tcg_ops = &arm_tcg_ops; |
cbc183d2 | 2022 | #endif /* CONFIG_TCG */ |
dec9c2d4 AF |
2023 | } |
2024 | ||
86f0a186 PM |
2025 | #ifdef CONFIG_KVM |
2026 | static void arm_host_initfn(Object *obj) | |
2027 | { | |
2028 | ARMCPU *cpu = ARM_CPU(obj); | |
2029 | ||
2030 | kvm_arm_set_cpu_features_from_host(cpu); | |
87014c6b AJ |
2031 | if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) { |
2032 | aarch64_add_sve_properties(obj); | |
2033 | } | |
51e5ef45 | 2034 | arm_cpu_post_init(obj); |
86f0a186 PM |
2035 | } |
2036 | ||
2037 | static const TypeInfo host_arm_cpu_type_info = { | |
2038 | .name = TYPE_ARM_HOST_CPU, | |
86f0a186 | 2039 | .parent = TYPE_AARCH64_CPU, |
86f0a186 PM |
2040 | .instance_init = arm_host_initfn, |
2041 | }; | |
2042 | ||
2043 | #endif | |
2044 | ||
51e5ef45 MAL |
2045 | static void arm_cpu_instance_init(Object *obj) |
2046 | { | |
2047 | ARMCPUClass *acc = ARM_CPU_GET_CLASS(obj); | |
2048 | ||
2049 | acc->info->initfn(obj); | |
2050 | arm_cpu_post_init(obj); | |
2051 | } | |
2052 | ||
2053 | static void cpu_register_class_init(ObjectClass *oc, void *data) | |
2054 | { | |
2055 | ARMCPUClass *acc = ARM_CPU_CLASS(oc); | |
2056 | ||
2057 | acc->info = data; | |
2058 | } | |
2059 | ||
37bcf244 | 2060 | void arm_cpu_register(const ARMCPUInfo *info) |
777dc784 PM |
2061 | { |
2062 | TypeInfo type_info = { | |
777dc784 PM |
2063 | .parent = TYPE_ARM_CPU, |
2064 | .instance_size = sizeof(ARMCPU), | |
d03087bd | 2065 | .instance_align = __alignof__(ARMCPU), |
51e5ef45 | 2066 | .instance_init = arm_cpu_instance_init, |
777dc784 | 2067 | .class_size = sizeof(ARMCPUClass), |
51e5ef45 MAL |
2068 | .class_init = info->class_init ?: cpu_register_class_init, |
2069 | .class_data = (void *)info, | |
777dc784 PM |
2070 | }; |
2071 | ||
51492fd1 | 2072 | type_info.name = g_strdup_printf("%s-" TYPE_ARM_CPU, info->name); |
918fd083 | 2073 | type_register(&type_info); |
51492fd1 | 2074 | g_free((void *)type_info.name); |
777dc784 PM |
2075 | } |
2076 | ||
dec9c2d4 AF |
2077 | static const TypeInfo arm_cpu_type_info = { |
2078 | .name = TYPE_ARM_CPU, | |
2079 | .parent = TYPE_CPU, | |
2080 | .instance_size = sizeof(ARMCPU), | |
d03087bd | 2081 | .instance_align = __alignof__(ARMCPU), |
777dc784 | 2082 | .instance_init = arm_cpu_initfn, |
4b6a83fb | 2083 | .instance_finalize = arm_cpu_finalizefn, |
777dc784 | 2084 | .abstract = true, |
dec9c2d4 AF |
2085 | .class_size = sizeof(ARMCPUClass), |
2086 | .class_init = arm_cpu_class_init, | |
2087 | }; | |
2088 | ||
2089 | static void arm_cpu_register_types(void) | |
2090 | { | |
2091 | type_register_static(&arm_cpu_type_info); | |
83e6813a | 2092 | |
86f0a186 PM |
2093 | #ifdef CONFIG_KVM |
2094 | type_register_static(&host_arm_cpu_type_info); | |
2095 | #endif | |
dec9c2d4 AF |
2096 | } |
2097 | ||
2098 | type_init(arm_cpu_register_types) |