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CommitLineData
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1#include "hw/hw.h"
2#include "hw/boards.h"
a7bf3034 3#include "qemu/error-report.h"
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4#include "sysemu/kvm.h"
5#include "kvm_arm.h"
9ee98ce8 6#include "internals.h"
8dd3dca3 7
3cc1d208 8static bool vfp_needed(void *opaque)
8dd3dca3 9{
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10 ARMCPU *cpu = opaque;
11 CPUARMState *env = &cpu->env;
8dd3dca3 12
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13 return arm_feature(env, ARM_FEATURE_VFP);
14}
8dd3dca3 15
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16static int get_fpscr(QEMUFile *f, void *opaque, size_t size)
17{
18 ARMCPU *cpu = opaque;
19 CPUARMState *env = &cpu->env;
20 uint32_t val = qemu_get_be32(f);
21
22 vfp_set_fpscr(env, val);
23 return 0;
24}
25
26static void put_fpscr(QEMUFile *f, void *opaque, size_t size)
27{
28 ARMCPU *cpu = opaque;
29 CPUARMState *env = &cpu->env;
30
31 qemu_put_be32(f, vfp_get_fpscr(env));
32}
33
34static const VMStateInfo vmstate_fpscr = {
35 .name = "fpscr",
36 .get = get_fpscr,
37 .put = put_fpscr,
38};
39
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40static const VMStateDescription vmstate_vfp = {
41 .name = "cpu/vfp",
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42 .version_id = 3,
43 .minimum_version_id = 3,
5cd8cada 44 .needed = vfp_needed,
3cc1d208 45 .fields = (VMStateField[]) {
3926cc84 46 VMSTATE_FLOAT64_ARRAY(env.vfp.regs, ARMCPU, 64),
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47 /* The xregs array is a little awkward because element 1 (FPSCR)
48 * requires a specific accessor, so we have to split it up in
49 * the vmstate:
50 */
51 VMSTATE_UINT32(env.vfp.xregs[0], ARMCPU),
52 VMSTATE_UINT32_SUB_ARRAY(env.vfp.xregs, ARMCPU, 2, 14),
53 {
54 .name = "fpscr",
55 .version_id = 0,
56 .size = sizeof(uint32_t),
57 .info = &vmstate_fpscr,
58 .flags = VMS_SINGLE,
59 .offset = 0,
60 },
3cc1d208 61 VMSTATE_END_OF_LIST()
8dd3dca3 62 }
3cc1d208 63};
8dd3dca3 64
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65static bool iwmmxt_needed(void *opaque)
66{
67 ARMCPU *cpu = opaque;
68 CPUARMState *env = &cpu->env;
8dd3dca3 69
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70 return arm_feature(env, ARM_FEATURE_IWMMXT);
71}
ffe47d33 72
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73static const VMStateDescription vmstate_iwmmxt = {
74 .name = "cpu/iwmmxt",
75 .version_id = 1,
76 .minimum_version_id = 1,
5cd8cada 77 .needed = iwmmxt_needed,
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78 .fields = (VMStateField[]) {
79 VMSTATE_UINT64_ARRAY(env.iwmmxt.regs, ARMCPU, 16),
80 VMSTATE_UINT32_ARRAY(env.iwmmxt.cregs, ARMCPU, 16),
81 VMSTATE_END_OF_LIST()
ffe47d33 82 }
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83};
84
85static bool m_needed(void *opaque)
86{
87 ARMCPU *cpu = opaque;
88 CPUARMState *env = &cpu->env;
89
90 return arm_feature(env, ARM_FEATURE_M);
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91}
92
6df05bdd 93static const VMStateDescription vmstate_m = {
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94 .name = "cpu/m",
95 .version_id = 1,
96 .minimum_version_id = 1,
5cd8cada 97 .needed = m_needed,
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98 .fields = (VMStateField[]) {
99 VMSTATE_UINT32(env.v7m.other_sp, ARMCPU),
100 VMSTATE_UINT32(env.v7m.vecbase, ARMCPU),
101 VMSTATE_UINT32(env.v7m.basepri, ARMCPU),
102 VMSTATE_UINT32(env.v7m.control, ARMCPU),
103 VMSTATE_INT32(env.v7m.current_sp, ARMCPU),
104 VMSTATE_INT32(env.v7m.exception, ARMCPU),
105 VMSTATE_END_OF_LIST()
106 }
107};
108
109static bool thumb2ee_needed(void *opaque)
8dd3dca3 110{
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111 ARMCPU *cpu = opaque;
112 CPUARMState *env = &cpu->env;
8dd3dca3 113
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114 return arm_feature(env, ARM_FEATURE_THUMB2EE);
115}
8dd3dca3 116
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117static const VMStateDescription vmstate_thumb2ee = {
118 .name = "cpu/thumb2ee",
119 .version_id = 1,
120 .minimum_version_id = 1,
5cd8cada 121 .needed = thumb2ee_needed,
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122 .fields = (VMStateField[]) {
123 VMSTATE_UINT32(env.teecr, ARMCPU),
124 VMSTATE_UINT32(env.teehbr, ARMCPU),
125 VMSTATE_END_OF_LIST()
8dd3dca3 126 }
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127};
128
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129static bool pmsav7_needed(void *opaque)
130{
131 ARMCPU *cpu = opaque;
132 CPUARMState *env = &cpu->env;
133
134 return arm_feature(env, ARM_FEATURE_MPU) &&
135 arm_feature(env, ARM_FEATURE_V7);
136}
137
138static bool pmsav7_rgnr_vmstate_validate(void *opaque, int version_id)
139{
140 ARMCPU *cpu = opaque;
141
142 return cpu->env.cp15.c6_rgnr < cpu->pmsav7_dregion;
143}
144
145static const VMStateDescription vmstate_pmsav7 = {
146 .name = "cpu/pmsav7",
147 .version_id = 1,
148 .minimum_version_id = 1,
149 .needed = pmsav7_needed,
150 .fields = (VMStateField[]) {
151 VMSTATE_VARRAY_UINT32(env.pmsav7.drbar, ARMCPU, pmsav7_dregion, 0,
152 vmstate_info_uint32, uint32_t),
153 VMSTATE_VARRAY_UINT32(env.pmsav7.drsr, ARMCPU, pmsav7_dregion, 0,
154 vmstate_info_uint32, uint32_t),
155 VMSTATE_VARRAY_UINT32(env.pmsav7.dracr, ARMCPU, pmsav7_dregion, 0,
156 vmstate_info_uint32, uint32_t),
157 VMSTATE_VALIDATE("rgnr is valid", pmsav7_rgnr_vmstate_validate),
158 VMSTATE_END_OF_LIST()
159 }
160};
161
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162static int get_cpsr(QEMUFile *f, void *opaque, size_t size)
163{
164 ARMCPU *cpu = opaque;
165 CPUARMState *env = &cpu->env;
166 uint32_t val = qemu_get_be32(f);
167
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168 env->aarch64 = ((val & PSTATE_nRW) == 0);
169
170 if (is_a64(env)) {
171 pstate_write(env, val);
172 return 0;
173 }
174
3cc1d208 175 /* Avoid mode switch when restoring CPSR */
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176 env->uncached_cpsr = val & CPSR_M;
177 cpsr_write(env, val, 0xffffffff);
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178 return 0;
179}
8dd3dca3 180
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181static void put_cpsr(QEMUFile *f, void *opaque, size_t size)
182{
183 ARMCPU *cpu = opaque;
184 CPUARMState *env = &cpu->env;
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185 uint32_t val;
186
187 if (is_a64(env)) {
188 val = pstate_read(env);
189 } else {
190 val = cpsr_read(env);
191 }
8dd3dca3 192
a7130a3e 193 qemu_put_be32(f, val);
3cc1d208 194}
8dd3dca3 195
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196static const VMStateInfo vmstate_cpsr = {
197 .name = "cpsr",
198 .get = get_cpsr,
199 .put = put_cpsr,
200};
201
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202static void cpu_pre_save(void *opaque)
203{
204 ARMCPU *cpu = opaque;
205
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206 if (kvm_enabled()) {
207 if (!write_kvmstate_to_list(cpu)) {
208 /* This should never fail */
209 abort();
210 }
211 } else {
212 if (!write_cpustate_to_list(cpu)) {
213 /* This should never fail. */
214 abort();
215 }
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216 }
217
218 cpu->cpreg_vmstate_array_len = cpu->cpreg_array_len;
219 memcpy(cpu->cpreg_vmstate_indexes, cpu->cpreg_indexes,
220 cpu->cpreg_array_len * sizeof(uint64_t));
221 memcpy(cpu->cpreg_vmstate_values, cpu->cpreg_values,
222 cpu->cpreg_array_len * sizeof(uint64_t));
223}
224
225static int cpu_post_load(void *opaque, int version_id)
226{
227 ARMCPU *cpu = opaque;
228 int i, v;
229
230 /* Update the values list from the incoming migration data.
231 * Anything in the incoming data which we don't know about is
232 * a migration failure; anything we know about but the incoming
233 * data doesn't specify retains its current (reset) value.
234 * The indexes list remains untouched -- we only inspect the
235 * incoming migration index list so we can match the values array
236 * entries with the right slots in our own values array.
237 */
238
239 for (i = 0, v = 0; i < cpu->cpreg_array_len
240 && v < cpu->cpreg_vmstate_array_len; i++) {
241 if (cpu->cpreg_vmstate_indexes[v] > cpu->cpreg_indexes[i]) {
242 /* register in our list but not incoming : skip it */
243 continue;
244 }
245 if (cpu->cpreg_vmstate_indexes[v] < cpu->cpreg_indexes[i]) {
246 /* register in their list but not ours: fail migration */
247 return -1;
248 }
249 /* matching register, copy the value over */
250 cpu->cpreg_values[i] = cpu->cpreg_vmstate_values[v];
251 v++;
252 }
253
ff047453 254 if (kvm_enabled()) {
4b7a6bf4 255 if (!write_list_to_kvmstate(cpu, KVM_PUT_FULL_STATE)) {
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256 return -1;
257 }
258 /* Note that it's OK for the TCG side not to know about
259 * every register in the list; KVM is authoritative if
260 * we're using it.
261 */
262 write_list_to_cpustate(cpu);
263 } else {
264 if (!write_list_to_cpustate(cpu)) {
265 return -1;
266 }
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267 }
268
46747d15 269 hw_breakpoint_update_all(cpu);
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270 hw_watchpoint_update_all(cpu);
271
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272 return 0;
273}
274
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275const VMStateDescription vmstate_arm_cpu = {
276 .name = "cpu",
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277 .version_id = 22,
278 .minimum_version_id = 22,
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279 .pre_save = cpu_pre_save,
280 .post_load = cpu_post_load,
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281 .fields = (VMStateField[]) {
282 VMSTATE_UINT32_ARRAY(env.regs, ARMCPU, 16),
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283 VMSTATE_UINT64_ARRAY(env.xregs, ARMCPU, 32),
284 VMSTATE_UINT64(env.pc, ARMCPU),
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285 {
286 .name = "cpsr",
287 .version_id = 0,
288 .size = sizeof(uint32_t),
289 .info = &vmstate_cpsr,
290 .flags = VMS_SINGLE,
291 .offset = 0,
292 },
293 VMSTATE_UINT32(env.spsr, ARMCPU),
28c9457d 294 VMSTATE_UINT64_ARRAY(env.banked_spsr, ARMCPU, 8),
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295 VMSTATE_UINT32_ARRAY(env.banked_r13, ARMCPU, 8),
296 VMSTATE_UINT32_ARRAY(env.banked_r14, ARMCPU, 8),
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297 VMSTATE_UINT32_ARRAY(env.usr_regs, ARMCPU, 5),
298 VMSTATE_UINT32_ARRAY(env.fiq_regs, ARMCPU, 5),
1b174238 299 VMSTATE_UINT64_ARRAY(env.elr_el, ARMCPU, 4),
73fb3b76 300 VMSTATE_UINT64_ARRAY(env.sp_el, ARMCPU, 4),
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301 /* The length-check must come before the arrays to avoid
302 * incoming data possibly overflowing the array.
303 */
3476436a 304 VMSTATE_INT32_POSITIVE_LE(cpreg_vmstate_array_len, ARMCPU),
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305 VMSTATE_VARRAY_INT32(cpreg_vmstate_indexes, ARMCPU,
306 cpreg_vmstate_array_len,
307 0, vmstate_info_uint64, uint64_t),
308 VMSTATE_VARRAY_INT32(cpreg_vmstate_values, ARMCPU,
309 cpreg_vmstate_array_len,
310 0, vmstate_info_uint64, uint64_t),
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311 VMSTATE_UINT64(env.exclusive_addr, ARMCPU),
312 VMSTATE_UINT64(env.exclusive_val, ARMCPU),
313 VMSTATE_UINT64(env.exclusive_high, ARMCPU),
3cc1d208 314 VMSTATE_UINT64(env.features, ARMCPU),
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315 VMSTATE_UINT32(env.exception.syndrome, ARMCPU),
316 VMSTATE_UINT32(env.exception.fsr, ARMCPU),
317 VMSTATE_UINT64(env.exception.vaddress, ARMCPU),
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318 VMSTATE_TIMER_PTR(gt_timer[GTIMER_PHYS], ARMCPU),
319 VMSTATE_TIMER_PTR(gt_timer[GTIMER_VIRT], ARMCPU),
543486db 320 VMSTATE_BOOL(powered_off, ARMCPU),
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321 VMSTATE_END_OF_LIST()
322 },
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323 .subsections = (const VMStateDescription*[]) {
324 &vmstate_vfp,
325 &vmstate_iwmmxt,
326 &vmstate_m,
327 &vmstate_thumb2ee,
6cb0b013 328 &vmstate_pmsav7,
5cd8cada 329 NULL
ffe47d33 330 }
3cc1d208 331};
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332
333const char *gicv3_class_name(void)
334{
335 if (kvm_irqchip_in_kernel()) {
336#ifdef TARGET_AARCH64
337 return "kvm-arm-gicv3";
338#else
339 error_report("KVM GICv3 acceleration is not supported on this "
340 "platform\n");
341#endif
342 } else {
343 /* TODO: Software emulation is not implemented yet */
344 error_report("KVM is currently required for GICv3 emulation\n");
345 }
346
347 exit(1);
348}