qemu/target-arm/cpu.c

   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
  21 #include "qemu/osdep.h"
  22 #include "qapi/error.h"
  23 #include "cpu.h"
  24 #include "internals.h"
  25 #include "qemu-common.h"
  26 #include "hw/qdev-properties.h"
  27 #if !defined(CONFIG_USER_ONLY)
  28 #include "hw/loader.h"
  29 #endif
  30 #include "hw/arm/arm.h"
  31 #include "sysemu/sysemu.h"
  32 #include "sysemu/kvm.h"
  33 #include "kvm_arm.h"
  34
  35 static void arm_cpu_set_pc(CPUState *cs, vaddr value)
  36 {
  37     ARMCPU *cpu = ARM_CPU(cs);
  38
  39     cpu->env.regs[15] = value;
  40 }
  41
  42 static bool arm_cpu_has_work(CPUState *cs)
  43 {
  44     ARMCPU *cpu = ARM_CPU(cs);
  45
  46     return !cpu->powered_off
  47         && cs->interrupt_request &
  48         (CPU_INTERRUPT_FIQ | CPU_INTERRUPT_HARD
  49          | CPU_INTERRUPT_VFIQ | CPU_INTERRUPT_VIRQ
  50          | CPU_INTERRUPT_EXITTB);
  51 }
  52
  53 static void cp_reg_reset(gpointer key, gpointer value, gpointer opaque)
  54 {
  55     /* Reset a single ARMCPRegInfo register */
  56     ARMCPRegInfo *ri = value;
  57     ARMCPU *cpu = opaque;
  58
  59     if (ri->type & (ARM_CP_SPECIAL | ARM_CP_ALIAS)) {
  60         return;
  61     }
  62
  63     if (ri->resetfn) {
  64         ri->resetfn(&cpu->env, ri);
  65         return;
  66     }
  67
  68     /* A zero offset is never possible as it would be regs[0]
  69      * so we use it to indicate that reset is being handled elsewhere.
  70      * This is basically only used for fields in non-core coprocessors
  71      * (like the pxa2xx ones).
  72      */
  73     if (!ri->fieldoffset) {
  74         return;
  75     }
  76
  77     if (cpreg_field_is_64bit(ri)) {
  78         CPREG_FIELD64(&cpu->env, ri) = ri->resetvalue;
  79     } else {
  80         CPREG_FIELD32(&cpu->env, ri) = ri->resetvalue;
  81     }
  82 }
  83
  84 static void cp_reg_check_reset(gpointer key, gpointer value,  gpointer opaque)
  85 {
  86     /* Purely an assertion check: we've already done reset once,
  87      * so now check that running the reset for the cpreg doesn't
  88      * change its value. This traps bugs where two different cpregs
  89      * both try to reset the same state field but to different values.
  90      */
  91     ARMCPRegInfo *ri = value;
  92     ARMCPU *cpu = opaque;
  93     uint64_t oldvalue, newvalue;
  94
  95     if (ri->type & (ARM_CP_SPECIAL | ARM_CP_ALIAS | ARM_CP_NO_RAW)) {
  96         return;
  97     }
  98
  99     oldvalue = read_raw_cp_reg(&cpu->env, ri);
 100     cp_reg_reset(key, value, opaque);
 101     newvalue = read_raw_cp_reg(&cpu->env, ri);
 102     assert(oldvalue == newvalue);
 103 }
 104
 105 /* CPUClass::reset() */
 106 static void arm_cpu_reset(CPUState *s)
 107 {
 108     ARMCPU *cpu = ARM_CPU(s);
 109     ARMCPUClass *acc = ARM_CPU_GET_CLASS(cpu);
 110     CPUARMState *env = &cpu->env;
 111
 112     acc->parent_reset(s);
 113
 114     memset(env, 0, offsetof(CPUARMState, features));
 115     g_hash_table_foreach(cpu->cp_regs, cp_reg_reset, cpu);
 116     g_hash_table_foreach(cpu->cp_regs, cp_reg_check_reset, cpu);
 117
 118     env->vfp.xregs[ARM_VFP_FPSID] = cpu->reset_fpsid;
 119     env->vfp.xregs[ARM_VFP_MVFR0] = cpu->mvfr0;
 120     env->vfp.xregs[ARM_VFP_MVFR1] = cpu->mvfr1;
 121     env->vfp.xregs[ARM_VFP_MVFR2] = cpu->mvfr2;
 122
 123     cpu->powered_off = cpu->start_powered_off;
 124     s->halted = cpu->start_powered_off;
 125
 126     if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
 127         env->iwmmxt.cregs[ARM_IWMMXT_wCID] = 0x69051000 | 'Q';
 128     }
 129
 130     if (arm_feature(env, ARM_FEATURE_AARCH64)) {
 131         /* 64 bit CPUs always start in 64 bit mode */
 132         env->aarch64 = 1;
 133 #if defined(CONFIG_USER_ONLY)
 134         env->pstate = PSTATE_MODE_EL0t;
 135         /* Userspace expects access to DC ZVA, CTL_EL0 and the cache ops */
 136         env->cp15.sctlr_el[1] |= SCTLR_UCT | SCTLR_UCI | SCTLR_DZE;
 137         /* and to the FP/Neon instructions */
 138         env->cp15.cpacr_el1 = deposit64(env->cp15.cpacr_el1, 20, 2, 3);
 139 #else
 140         /* Reset into the highest available EL */
 141         if (arm_feature(env, ARM_FEATURE_EL3)) {
 142             env->pstate = PSTATE_MODE_EL3h;
 143         } else if (arm_feature(env, ARM_FEATURE_EL2)) {
 144             env->pstate = PSTATE_MODE_EL2h;
 145         } else {
 146             env->pstate = PSTATE_MODE_EL1h;
 147         }
 148         env->pc = cpu->rvbar;
 149 #endif
 150     } else {
 151 #if defined(CONFIG_USER_ONLY)
 152         /* Userspace expects access to cp10 and cp11 for FP/Neon */
 153         env->cp15.cpacr_el1 = deposit64(env->cp15.cpacr_el1, 20, 4, 0xf);
 154 #endif
 155     }
 156
 157 #if defined(CONFIG_USER_ONLY)
 158     env->uncached_cpsr = ARM_CPU_MODE_USR;
 159     /* For user mode we must enable access to coprocessors */
 160     env->vfp.xregs[ARM_VFP_FPEXC] = 1 << 30;
 161     if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
 162         env->cp15.c15_cpar = 3;
 163     } else if (arm_feature(env, ARM_FEATURE_XSCALE)) {
 164         env->cp15.c15_cpar = 1;
 165     }
 166 #else
 167     /* SVC mode with interrupts disabled.  */
 168     env->uncached_cpsr = ARM_CPU_MODE_SVC;
 169     env->daif = PSTATE_D | PSTATE_A | PSTATE_I | PSTATE_F;
 170     /* On ARMv7-M the CPSR_I is the value of the PRIMASK register, and is
 171      * clear at reset. Initial SP and PC are loaded from ROM.
 172      */
 173     if (IS_M(env)) {
 174         uint32_t initial_msp; /* Loaded from 0x0 */
 175         uint32_t initial_pc; /* Loaded from 0x4 */
 176         uint8_t *rom;
 177
 178         env->daif &= ~PSTATE_I;
 179         rom = rom_ptr(0);
 180         if (rom) {
 181             /* Address zero is covered by ROM which hasn't yet been
 182              * copied into physical memory.
 183              */
 184             initial_msp = ldl_p(rom);
 185             initial_pc = ldl_p(rom + 4);
 186         } else {
 187             /* Address zero not covered by a ROM blob, or the ROM blob
 188              * is in non-modifiable memory and this is a second reset after
 189              * it got copied into memory. In the latter case, rom_ptr
 190              * will return a NULL pointer and we should use ldl_phys instead.
 191              */
 192             initial_msp = ldl_phys(s->as, 0);
 193             initial_pc = ldl_phys(s->as, 4);
 194         }
 195
 196         env->regs[13] = initial_msp & 0xFFFFFFFC;
 197         env->regs[15] = initial_pc & ~1;
 198         env->thumb = initial_pc & 1;
 199     }
 200
 201     /* AArch32 has a hard highvec setting of 0xFFFF0000.  If we are currently
 202      * executing as AArch32 then check if highvecs are enabled and
 203      * adjust the PC accordingly.
 204      */
 205     if (A32_BANKED_CURRENT_REG_GET(env, sctlr) & SCTLR_V) {
 206         env->regs[15] = 0xFFFF0000;
 207     }
 208
 209     env->vfp.xregs[ARM_VFP_FPEXC] = 0;
 210 #endif
 211     set_flush_to_zero(1, &env->vfp.standard_fp_status);
 212     set_flush_inputs_to_zero(1, &env->vfp.standard_fp_status);
 213     set_default_nan_mode(1, &env->vfp.standard_fp_status);
 214     set_float_detect_tininess(float_tininess_before_rounding,
 215                               &env->vfp.fp_status);
 216     set_float_detect_tininess(float_tininess_before_rounding,
 217                               &env->vfp.standard_fp_status);
 218     tlb_flush(s, 1);
 219
 220 #ifndef CONFIG_USER_ONLY
 221     if (kvm_enabled()) {
 222         kvm_arm_reset_vcpu(cpu);
 223     }
 224 #endif
 225
 226     hw_breakpoint_update_all(cpu);
 227     hw_watchpoint_update_all(cpu);
 228 }
 229
 230 bool arm_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
 231 {
 232     CPUClass *cc = CPU_GET_CLASS(cs);
 233     CPUARMState *env = cs->env_ptr;
 234     uint32_t cur_el = arm_current_el(env);
 235     bool secure = arm_is_secure(env);
 236     uint32_t target_el;
 237     uint32_t excp_idx;
 238     bool ret = false;
 239
 240     if (interrupt_request & CPU_INTERRUPT_FIQ) {
 241         excp_idx = EXCP_FIQ;
 242         target_el = arm_phys_excp_target_el(cs, excp_idx, cur_el, secure);
 243         if (arm_excp_unmasked(cs, excp_idx, target_el)) {
 244             cs->exception_index = excp_idx;
 245             env->exception.target_el = target_el;
 246             cc->do_interrupt(cs);
 247             ret = true;
 248         }
 249     }
 250     if (interrupt_request & CPU_INTERRUPT_HARD) {
 251         excp_idx = EXCP_IRQ;
 252         target_el = arm_phys_excp_target_el(cs, excp_idx, cur_el, secure);
 253         if (arm_excp_unmasked(cs, excp_idx, target_el)) {
 254             cs->exception_index = excp_idx;
 255             env->exception.target_el = target_el;
 256             cc->do_interrupt(cs);
 257             ret = true;
 258         }
 259     }
 260     if (interrupt_request & CPU_INTERRUPT_VIRQ) {
 261         excp_idx = EXCP_VIRQ;
 262         target_el = 1;
 263         if (arm_excp_unmasked(cs, excp_idx, target_el)) {
 264             cs->exception_index = excp_idx;
 265             env->exception.target_el = target_el;
 266             cc->do_interrupt(cs);
 267             ret = true;
 268         }
 269     }
 270     if (interrupt_request & CPU_INTERRUPT_VFIQ) {
 271         excp_idx = EXCP_VFIQ;
 272         target_el = 1;
 273         if (arm_excp_unmasked(cs, excp_idx, target_el)) {
 274             cs->exception_index = excp_idx;
 275             env->exception.target_el = target_el;
 276             cc->do_interrupt(cs);
 277             ret = true;
 278         }
 279     }
 280
 281     return ret;
 282 }
 283
 284 #if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)
 285 static bool arm_v7m_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
 286 {
 287     CPUClass *cc = CPU_GET_CLASS(cs);
 288     ARMCPU *cpu = ARM_CPU(cs);
 289     CPUARMState *env = &cpu->env;
 290     bool ret = false;
 291
 292
 293     if (interrupt_request & CPU_INTERRUPT_FIQ
 294         && !(env->daif & PSTATE_F)) {
 295         cs->exception_index = EXCP_FIQ;
 296         cc->do_interrupt(cs);
 297         ret = true;
 298     }
 299     /* ARMv7-M interrupt return works by loading a magic value
 300      * into the PC.  On real hardware the load causes the
 301      * return to occur.  The qemu implementation performs the
 302      * jump normally, then does the exception return when the
 303      * CPU tries to execute code at the magic address.
 304      * This will cause the magic PC value to be pushed to
 305      * the stack if an interrupt occurred at the wrong time.
 306      * We avoid this by disabling interrupts when
 307      * pc contains a magic address.
 308      */
 309     if (interrupt_request & CPU_INTERRUPT_HARD
 310         && !(env->daif & PSTATE_I)
 311         && (env->regs[15] < 0xfffffff0)) {
 312         cs->exception_index = EXCP_IRQ;
 313         cc->do_interrupt(cs);
 314         ret = true;
 315     }
 316     return ret;
 317 }
 318 #endif
 319
 320 #ifndef CONFIG_USER_ONLY
 321 static void arm_cpu_set_irq(void *opaque, int irq, int level)
 322 {
 323     ARMCPU *cpu = opaque;
 324     CPUARMState *env = &cpu->env;
 325     CPUState *cs = CPU(cpu);
 326     static const int mask[] = {
 327         [ARM_CPU_IRQ] = CPU_INTERRUPT_HARD,
 328         [ARM_CPU_FIQ] = CPU_INTERRUPT_FIQ,
 329         [ARM_CPU_VIRQ] = CPU_INTERRUPT_VIRQ,
 330         [ARM_CPU_VFIQ] = CPU_INTERRUPT_VFIQ
 331     };
 332
 333     switch (irq) {
 334     case ARM_CPU_VIRQ:
 335     case ARM_CPU_VFIQ:
 336         assert(arm_feature(env, ARM_FEATURE_EL2));
 337         /* fall through */
 338     case ARM_CPU_IRQ:
 339     case ARM_CPU_FIQ:
 340         if (level) {
 341             cpu_interrupt(cs, mask[irq]);
 342         } else {
 343             cpu_reset_interrupt(cs, mask[irq]);
 344         }
 345         break;
 346     default:
 347         g_assert_not_reached();
 348     }
 349 }
 350
 351 static void arm_cpu_kvm_set_irq(void *opaque, int irq, int level)
 352 {
 353 #ifdef CONFIG_KVM
 354     ARMCPU *cpu = opaque;
 355     CPUState *cs = CPU(cpu);
 356     int kvm_irq = KVM_ARM_IRQ_TYPE_CPU << KVM_ARM_IRQ_TYPE_SHIFT;
 357
 358     switch (irq) {
 359     case ARM_CPU_IRQ:
 360         kvm_irq |= KVM_ARM_IRQ_CPU_IRQ;
 361         break;
 362     case ARM_CPU_FIQ:
 363         kvm_irq |= KVM_ARM_IRQ_CPU_FIQ;
 364         break;
 365     default:
 366         g_assert_not_reached();
 367     }
 368     kvm_irq |= cs->cpu_index << KVM_ARM_IRQ_VCPU_SHIFT;
 369     kvm_set_irq(kvm_state, kvm_irq, level ? 1 : 0);
 370 #endif
 371 }
 372
 373 static bool arm_cpu_virtio_is_big_endian(CPUState *cs)
 374 {
 375     ARMCPU *cpu = ARM_CPU(cs);
 376     CPUARMState *env = &cpu->env;
 377
 378     cpu_synchronize_state(cs);
 379     return arm_cpu_data_is_big_endian(env);
 380 }
 381
 382 #endif
 383
 384 static inline void set_feature(CPUARMState *env, int feature)
 385 {
 386     env->features |= 1ULL << feature;
 387 }
 388
 389 static inline void unset_feature(CPUARMState *env, int feature)
 390 {
 391     env->features &= ~(1ULL << feature);
 392 }
 393
 394 static int
 395 print_insn_thumb1(bfd_vma pc, disassemble_info *info)
 396 {
 397   return print_insn_arm(pc | 1, info);
 398 }
 399
 400 static void arm_disas_set_info(CPUState *cpu, disassemble_info *info)
 401 {
 402     ARMCPU *ac = ARM_CPU(cpu);
 403     CPUARMState *env = &ac->env;
 404
 405     if (is_a64(env)) {
 406         /* We might not be compiled with the A64 disassembler
 407          * because it needs a C++ compiler. Leave print_insn
 408          * unset in this case to use the caller default behaviour.
 409          */
 410 #if defined(CONFIG_ARM_A64_DIS)
 411         info->print_insn = print_insn_arm_a64;
 412 #endif
 413     } else if (env->thumb) {
 414         info->print_insn = print_insn_thumb1;
 415     } else {
 416         info->print_insn = print_insn_arm;
 417     }
 418     if (bswap_code(arm_sctlr_b(env))) {
 419 #ifdef TARGET_WORDS_BIGENDIAN
 420         info->endian = BFD_ENDIAN_LITTLE;
 421 #else
 422         info->endian = BFD_ENDIAN_BIG;
 423 #endif
 424     }
 425 }
 426
 427 #define ARM_CPUS_PER_CLUSTER 8
 428
 429 static void arm_cpu_initfn(Object *obj)
 430 {
 431     CPUState *cs = CPU(obj);
 432     ARMCPU *cpu = ARM_CPU(obj);
 433     static bool inited;
 434     uint32_t Aff1, Aff0;
 435
 436     cs->env_ptr = &cpu->env;
 437     cpu_exec_init(cs, &error_abort);
 438     cpu->cp_regs = g_hash_table_new_full(g_int_hash, g_int_equal,
 439                                          g_free, g_free);
 440
 441     /* This cpu-id-to-MPIDR affinity is used only for TCG; KVM will override it.
 442      * We don't support setting cluster ID ([16..23]) (known as Aff2
 443      * in later ARM ARM versions), or any of the higher affinity level fields,
 444      * so these bits always RAZ.
 445      */
 446     Aff1 = cs->cpu_index / ARM_CPUS_PER_CLUSTER;
 447     Aff0 = cs->cpu_index % ARM_CPUS_PER_CLUSTER;
 448     cpu->mp_affinity = (Aff1 << ARM_AFF1_SHIFT) | Aff0;
 449
 450 #ifndef CONFIG_USER_ONLY
 451     /* Our inbound IRQ and FIQ lines */
 452     if (kvm_enabled()) {
 453         /* VIRQ and VFIQ are unused with KVM but we add them to maintain
 454          * the same interface as non-KVM CPUs.
 455          */
 456         qdev_init_gpio_in(DEVICE(cpu), arm_cpu_kvm_set_irq, 4);
 457     } else {
 458         qdev_init_gpio_in(DEVICE(cpu), arm_cpu_set_irq, 4);
 459     }
 460
 461     cpu->gt_timer[GTIMER_PHYS] = timer_new(QEMU_CLOCK_VIRTUAL, GTIMER_SCALE,
 462                                                 arm_gt_ptimer_cb, cpu);
 463     cpu->gt_timer[GTIMER_VIRT] = timer_new(QEMU_CLOCK_VIRTUAL, GTIMER_SCALE,
 464                                                 arm_gt_vtimer_cb, cpu);
 465     cpu->gt_timer[GTIMER_HYP] = timer_new(QEMU_CLOCK_VIRTUAL, GTIMER_SCALE,
 466                                                 arm_gt_htimer_cb, cpu);
 467     cpu->gt_timer[GTIMER_SEC] = timer_new(QEMU_CLOCK_VIRTUAL, GTIMER_SCALE,
 468                                                 arm_gt_stimer_cb, cpu);
 469     qdev_init_gpio_out(DEVICE(cpu), cpu->gt_timer_outputs,
 470                        ARRAY_SIZE(cpu->gt_timer_outputs));
 471 #endif
 472
 473     /* DTB consumers generally don't in fact care what the 'compatible'
 474      * string is, so always provide some string and trust that a hypothetical
 475      * picky DTB consumer will also provide a helpful error message.
 476      */
 477     cpu->dtb_compatible = "qemu,unknown";
 478     cpu->psci_version = 1; /* By default assume PSCI v0.1 */
 479     cpu->kvm_target = QEMU_KVM_ARM_TARGET_NONE;
 480
 481     if (tcg_enabled()) {
 482         cpu->psci_version = 2; /* TCG implements PSCI 0.2 */
 483         if (!inited) {
 484             inited = true;
 485             arm_translate_init();
 486         }
 487     }
 488 }
 489
 490 static Property arm_cpu_reset_cbar_property =
 491             DEFINE_PROP_UINT64("reset-cbar", ARMCPU, reset_cbar, 0);
 492
 493 static Property arm_cpu_reset_hivecs_property =
 494             DEFINE_PROP_BOOL("reset-hivecs", ARMCPU, reset_hivecs, false);
 495
 496 static Property arm_cpu_rvbar_property =
 497             DEFINE_PROP_UINT64("rvbar", ARMCPU, rvbar, 0);
 498
 499 static Property arm_cpu_has_el3_property =
 500             DEFINE_PROP_BOOL("has_el3", ARMCPU, has_el3, true);
 501
 502 static Property arm_cpu_has_mpu_property =
 503             DEFINE_PROP_BOOL("has-mpu", ARMCPU, has_mpu, true);
 504
 505 static Property arm_cpu_pmsav7_dregion_property =
 506             DEFINE_PROP_UINT32("pmsav7-dregion", ARMCPU, pmsav7_dregion, 16);
 507
 508 static void arm_cpu_post_init(Object *obj)
 509 {
 510     ARMCPU *cpu = ARM_CPU(obj);
 511
 512     if (arm_feature(&cpu->env, ARM_FEATURE_CBAR) ||
 513         arm_feature(&cpu->env, ARM_FEATURE_CBAR_RO)) {
 514         qdev_property_add_static(DEVICE(obj), &arm_cpu_reset_cbar_property,
 515                                  &error_abort);
 516     }
 517
 518     if (!arm_feature(&cpu->env, ARM_FEATURE_M)) {
 519         qdev_property_add_static(DEVICE(obj), &arm_cpu_reset_hivecs_property,
 520                                  &error_abort);
 521     }
 522
 523     if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) {
 524         qdev_property_add_static(DEVICE(obj), &arm_cpu_rvbar_property,
 525                                  &error_abort);
 526     }
 527
 528     if (arm_feature(&cpu->env, ARM_FEATURE_EL3)) {
 529         /* Add the has_el3 state CPU property only if EL3 is allowed.  This will
 530          * prevent "has_el3" from existing on CPUs which cannot support EL3.
 531          */
 532         qdev_property_add_static(DEVICE(obj), &arm_cpu_has_el3_property,
 533                                  &error_abort);
 534
 535 #ifndef CONFIG_USER_ONLY
 536         object_property_add_link(obj, "secure-memory",
 537                                  TYPE_MEMORY_REGION,
 538                                  (Object **)&cpu->secure_memory,
 539                                  qdev_prop_allow_set_link_before_realize,
 540                                  OBJ_PROP_LINK_UNREF_ON_RELEASE,
 541                                  &error_abort);
 542 #endif
 543     }
 544
 545     if (arm_feature(&cpu->env, ARM_FEATURE_MPU)) {
 546         qdev_property_add_static(DEVICE(obj), &arm_cpu_has_mpu_property,
 547                                  &error_abort);
 548         if (arm_feature(&cpu->env, ARM_FEATURE_V7)) {
 549             qdev_property_add_static(DEVICE(obj),
 550                                      &arm_cpu_pmsav7_dregion_property,
 551                                      &error_abort);
 552         }
 553     }
 554
 555 }
 556
 557 static void arm_cpu_finalizefn(Object *obj)
 558 {
 559     ARMCPU *cpu = ARM_CPU(obj);
 560     g_hash_table_destroy(cpu->cp_regs);
 561 }
 562
 563 static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
 564 {
 565     CPUState *cs = CPU(dev);
 566     ARMCPU *cpu = ARM_CPU(dev);
 567     ARMCPUClass *acc = ARM_CPU_GET_CLASS(dev);
 568     CPUARMState *env = &cpu->env;
 569
 570     /* Some features automatically imply others: */
 571     if (arm_feature(env, ARM_FEATURE_V8)) {
 572         set_feature(env, ARM_FEATURE_V7);
 573         set_feature(env, ARM_FEATURE_ARM_DIV);
 574         set_feature(env, ARM_FEATURE_LPAE);
 575     }
 576     if (arm_feature(env, ARM_FEATURE_V7)) {
 577         set_feature(env, ARM_FEATURE_VAPA);
 578         set_feature(env, ARM_FEATURE_THUMB2);
 579         set_feature(env, ARM_FEATURE_MPIDR);
 580         if (!arm_feature(env, ARM_FEATURE_M)) {
 581             set_feature(env, ARM_FEATURE_V6K);
 582         } else {
 583             set_feature(env, ARM_FEATURE_V6);
 584         }
 585     }
 586     if (arm_feature(env, ARM_FEATURE_V6K)) {
 587         set_feature(env, ARM_FEATURE_V6);
 588         set_feature(env, ARM_FEATURE_MVFR);
 589     }
 590     if (arm_feature(env, ARM_FEATURE_V6)) {
 591         set_feature(env, ARM_FEATURE_V5);
 592         if (!arm_feature(env, ARM_FEATURE_M)) {
 593             set_feature(env, ARM_FEATURE_AUXCR);
 594         }
 595     }
 596     if (arm_feature(env, ARM_FEATURE_V5)) {
 597         set_feature(env, ARM_FEATURE_V4T);
 598     }
 599     if (arm_feature(env, ARM_FEATURE_M)) {
 600         set_feature(env, ARM_FEATURE_THUMB_DIV);
 601     }
 602     if (arm_feature(env, ARM_FEATURE_ARM_DIV)) {
 603         set_feature(env, ARM_FEATURE_THUMB_DIV);
 604     }
 605     if (arm_feature(env, ARM_FEATURE_VFP4)) {
 606         set_feature(env, ARM_FEATURE_VFP3);
 607         set_feature(env, ARM_FEATURE_VFP_FP16);
 608     }
 609     if (arm_feature(env, ARM_FEATURE_VFP3)) {
 610         set_feature(env, ARM_FEATURE_VFP);
 611     }
 612     if (arm_feature(env, ARM_FEATURE_LPAE)) {
 613         set_feature(env, ARM_FEATURE_V7MP);
 614         set_feature(env, ARM_FEATURE_PXN);
 615     }
 616     if (arm_feature(env, ARM_FEATURE_CBAR_RO)) {
 617         set_feature(env, ARM_FEATURE_CBAR);
 618     }
 619     if (arm_feature(env, ARM_FEATURE_THUMB2) &&
 620         !arm_feature(env, ARM_FEATURE_M)) {
 621         set_feature(env, ARM_FEATURE_THUMB_DSP);
 622     }
 623
 624     if (cpu->reset_hivecs) {
 625             cpu->reset_sctlr |= (1 << 13);
 626     }
 627
 628     if (!cpu->has_el3) {
 629         /* If the has_el3 CPU property is disabled then we need to disable the
 630          * feature.
 631          */
 632         unset_feature(env, ARM_FEATURE_EL3);
 633
 634         /* Disable the security extension feature bits in the processor feature
 635          * registers as well. These are id_pfr1[7:4] and id_aa64pfr0[15:12].
 636          */
 637         cpu->id_pfr1 &= ~0xf0;
 638         cpu->id_aa64pfr0 &= ~0xf000;
 639     }
 640
 641     if (!arm_feature(env, ARM_FEATURE_EL2)) {
 642         /* Disable the hypervisor feature bits in the processor feature
 643          * registers if we don't have EL2. These are id_pfr1[15:12] and
 644          * id_aa64pfr0_el1[11:8].
 645          */
 646         cpu->id_aa64pfr0 &= ~0xf00;
 647         cpu->id_pfr1 &= ~0xf000;
 648     }
 649
 650     if (!cpu->has_mpu) {
 651         unset_feature(env, ARM_FEATURE_MPU);
 652     }
 653
 654     if (arm_feature(env, ARM_FEATURE_MPU) &&
 655         arm_feature(env, ARM_FEATURE_V7)) {
 656         uint32_t nr = cpu->pmsav7_dregion;
 657
 658         if (nr > 0xff) {
 659             error_setg(errp, "PMSAv7 MPU #regions invalid %" PRIu32, nr);
 660             return;
 661         }
 662
 663         if (nr) {
 664             env->pmsav7.drbar = g_new0(uint32_t, nr);
 665             env->pmsav7.drsr = g_new0(uint32_t, nr);
 666             env->pmsav7.dracr = g_new0(uint32_t, nr);
 667         }
 668     }
 669
 670     register_cp_regs_for_features(cpu);
 671     arm_cpu_register_gdb_regs_for_features(cpu);
 672
 673     init_cpreg_list(cpu);
 674
 675 #ifndef CONFIG_USER_ONLY
 676     if (cpu->has_el3) {
 677         cs->num_ases = 2;
 678     } else {
 679         cs->num_ases = 1;
 680     }
 681
 682     if (cpu->has_el3) {
 683         AddressSpace *as;
 684
 685         if (!cpu->secure_memory) {
 686             cpu->secure_memory = cs->memory;
 687         }
 688         as = address_space_init_shareable(cpu->secure_memory,
 689                                           "cpu-secure-memory");
 690         cpu_address_space_init(cs, as, ARMASIdx_S);
 691     }
 692     cpu_address_space_init(cs,
 693                            address_space_init_shareable(cs->memory,
 694                                                         "cpu-memory"),
 695                            ARMASIdx_NS);
 696 #endif
 697
 698     qemu_init_vcpu(cs);
 699     cpu_reset(cs);
 700
 701     acc->parent_realize(dev, errp);
 702 }
 703
 704 static ObjectClass *arm_cpu_class_by_name(const char *cpu_model)
 705 {
 706     ObjectClass *oc;
 707     char *typename;
 708     char **cpuname;
 709
 710     if (!cpu_model) {
 711         return NULL;
 712     }
 713
 714     cpuname = g_strsplit(cpu_model, ",", 1);
 715     typename = g_strdup_printf("%s-" TYPE_ARM_CPU, cpuname[0]);
 716     oc = object_class_by_name(typename);
 717     g_strfreev(cpuname);
 718     g_free(typename);
 719     if (!oc || !object_class_dynamic_cast(oc, TYPE_ARM_CPU) ||
 720         object_class_is_abstract(oc)) {
 721         return NULL;
 722     }
 723     return oc;
 724 }
 725
 726 /* CPU models. These are not needed for the AArch64 linux-user build. */
 727 #if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)
 728
 729 static void arm926_initfn(Object *obj)
 730 {
 731     ARMCPU *cpu = ARM_CPU(obj);
 732
 733     cpu->dtb_compatible = "arm,arm926";
 734     set_feature(&cpu->env, ARM_FEATURE_V5);
 735     set_feature(&cpu->env, ARM_FEATURE_VFP);
 736     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 737     set_feature(&cpu->env, ARM_FEATURE_CACHE_TEST_CLEAN);
 738     cpu->midr = 0x41069265;
 739     cpu->reset_fpsid = 0x41011090;
 740     cpu->ctr = 0x1dd20d2;
 741     cpu->reset_sctlr = 0x00090078;
 742 }
 743
 744 static void arm946_initfn(Object *obj)
 745 {
 746     ARMCPU *cpu = ARM_CPU(obj);
 747
 748     cpu->dtb_compatible = "arm,arm946";
 749     set_feature(&cpu->env, ARM_FEATURE_V5);
 750     set_feature(&cpu->env, ARM_FEATURE_MPU);
 751     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 752     cpu->midr = 0x41059461;
 753     cpu->ctr = 0x0f004006;
 754     cpu->reset_sctlr = 0x00000078;
 755 }
 756
 757 static void arm1026_initfn(Object *obj)
 758 {
 759     ARMCPU *cpu = ARM_CPU(obj);
 760
 761     cpu->dtb_compatible = "arm,arm1026";
 762     set_feature(&cpu->env, ARM_FEATURE_V5);
 763     set_feature(&cpu->env, ARM_FEATURE_VFP);
 764     set_feature(&cpu->env, ARM_FEATURE_AUXCR);
 765     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 766     set_feature(&cpu->env, ARM_FEATURE_CACHE_TEST_CLEAN);
 767     cpu->midr = 0x4106a262;
 768     cpu->reset_fpsid = 0x410110a0;
 769     cpu->ctr = 0x1dd20d2;
 770     cpu->reset_sctlr = 0x00090078;
 771     cpu->reset_auxcr = 1;
 772     {
 773         /* The 1026 had an IFAR at c6,c0,0,1 rather than the ARMv6 c6,c0,0,2 */
 774         ARMCPRegInfo ifar = {
 775             .name = "IFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 1,
 776             .access = PL1_RW,
 777             .fieldoffset = offsetof(CPUARMState, cp15.ifar_ns),
 778             .resetvalue = 0
 779         };
 780         define_one_arm_cp_reg(cpu, &ifar);
 781     }
 782 }
 783
 784 static void arm1136_r2_initfn(Object *obj)
 785 {
 786     ARMCPU *cpu = ARM_CPU(obj);
 787     /* What qemu calls "arm1136_r2" is actually the 1136 r0p2, ie an
 788      * older core than plain "arm1136". In particular this does not
 789      * have the v6K features.
 790      * These ID register values are correct for 1136 but may be wrong
 791      * for 1136_r2 (in particular r0p2 does not actually implement most
 792      * of the ID registers).
 793      */
 794
 795     cpu->dtb_compatible = "arm,arm1136";
 796     set_feature(&cpu->env, ARM_FEATURE_V6);
 797     set_feature(&cpu->env, ARM_FEATURE_VFP);
 798     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 799     set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
 800     set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
 801     cpu->midr = 0x4107b362;
 802     cpu->reset_fpsid = 0x410120b4;
 803     cpu->mvfr0 = 0x11111111;
 804     cpu->mvfr1 = 0x00000000;
 805     cpu->ctr = 0x1dd20d2;
 806     cpu->reset_sctlr = 0x00050078;
 807     cpu->id_pfr0 = 0x111;
 808     cpu->id_pfr1 = 0x1;
 809     cpu->id_dfr0 = 0x2;
 810     cpu->id_afr0 = 0x3;
 811     cpu->id_mmfr0 = 0x01130003;
 812     cpu->id_mmfr1 = 0x10030302;
 813     cpu->id_mmfr2 = 0x01222110;
 814     cpu->id_isar0 = 0x00140011;
 815     cpu->id_isar1 = 0x12002111;
 816     cpu->id_isar2 = 0x11231111;
 817     cpu->id_isar3 = 0x01102131;
 818     cpu->id_isar4 = 0x141;
 819     cpu->reset_auxcr = 7;
 820 }
 821
 822 static void arm1136_initfn(Object *obj)
 823 {
 824     ARMCPU *cpu = ARM_CPU(obj);
 825
 826     cpu->dtb_compatible = "arm,arm1136";
 827     set_feature(&cpu->env, ARM_FEATURE_V6K);
 828     set_feature(&cpu->env, ARM_FEATURE_V6);
 829     set_feature(&cpu->env, ARM_FEATURE_VFP);
 830     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 831     set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
 832     set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
 833     cpu->midr = 0x4117b363;
 834     cpu->reset_fpsid = 0x410120b4;
 835     cpu->mvfr0 = 0x11111111;
 836     cpu->mvfr1 = 0x00000000;
 837     cpu->ctr = 0x1dd20d2;
 838     cpu->reset_sctlr = 0x00050078;
 839     cpu->id_pfr0 = 0x111;
 840     cpu->id_pfr1 = 0x1;
 841     cpu->id_dfr0 = 0x2;
 842     cpu->id_afr0 = 0x3;
 843     cpu->id_mmfr0 = 0x01130003;
 844     cpu->id_mmfr1 = 0x10030302;
 845     cpu->id_mmfr2 = 0x01222110;
 846     cpu->id_isar0 = 0x00140011;
 847     cpu->id_isar1 = 0x12002111;
 848     cpu->id_isar2 = 0x11231111;
 849     cpu->id_isar3 = 0x01102131;
 850     cpu->id_isar4 = 0x141;
 851     cpu->reset_auxcr = 7;
 852 }
 853
 854 static void arm1176_initfn(Object *obj)
 855 {
 856     ARMCPU *cpu = ARM_CPU(obj);
 857
 858     cpu->dtb_compatible = "arm,arm1176";
 859     set_feature(&cpu->env, ARM_FEATURE_V6K);
 860     set_feature(&cpu->env, ARM_FEATURE_VFP);
 861     set_feature(&cpu->env, ARM_FEATURE_VAPA);
 862     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 863     set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
 864     set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
 865     set_feature(&cpu->env, ARM_FEATURE_EL3);
 866     cpu->midr = 0x410fb767;
 867     cpu->reset_fpsid = 0x410120b5;
 868     cpu->mvfr0 = 0x11111111;
 869     cpu->mvfr1 = 0x00000000;
 870     cpu->ctr = 0x1dd20d2;
 871     cpu->reset_sctlr = 0x00050078;
 872     cpu->id_pfr0 = 0x111;
 873     cpu->id_pfr1 = 0x11;
 874     cpu->id_dfr0 = 0x33;
 875     cpu->id_afr0 = 0;
 876     cpu->id_mmfr0 = 0x01130003;
 877     cpu->id_mmfr1 = 0x10030302;
 878     cpu->id_mmfr2 = 0x01222100;
 879     cpu->id_isar0 = 0x0140011;
 880     cpu->id_isar1 = 0x12002111;
 881     cpu->id_isar2 = 0x11231121;
 882     cpu->id_isar3 = 0x01102131;
 883     cpu->id_isar4 = 0x01141;
 884     cpu->reset_auxcr = 7;
 885 }
 886
 887 static void arm11mpcore_initfn(Object *obj)
 888 {
 889     ARMCPU *cpu = ARM_CPU(obj);
 890
 891     cpu->dtb_compatible = "arm,arm11mpcore";
 892     set_feature(&cpu->env, ARM_FEATURE_V6K);
 893     set_feature(&cpu->env, ARM_FEATURE_VFP);
 894     set_feature(&cpu->env, ARM_FEATURE_VAPA);
 895     set_feature(&cpu->env, ARM_FEATURE_MPIDR);
 896     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 897     cpu->midr = 0x410fb022;
 898     cpu->reset_fpsid = 0x410120b4;
 899     cpu->mvfr0 = 0x11111111;
 900     cpu->mvfr1 = 0x00000000;
 901     cpu->ctr = 0x1d192992; /* 32K icache 32K dcache */
 902     cpu->id_pfr0 = 0x111;
 903     cpu->id_pfr1 = 0x1;
 904     cpu->id_dfr0 = 0;
 905     cpu->id_afr0 = 0x2;
 906     cpu->id_mmfr0 = 0x01100103;
 907     cpu->id_mmfr1 = 0x10020302;
 908     cpu->id_mmfr2 = 0x01222000;
 909     cpu->id_isar0 = 0x00100011;
 910     cpu->id_isar1 = 0x12002111;
 911     cpu->id_isar2 = 0x11221011;
 912     cpu->id_isar3 = 0x01102131;
 913     cpu->id_isar4 = 0x141;
 914     cpu->reset_auxcr = 1;
 915 }
 916
 917 static void cortex_m3_initfn(Object *obj)
 918 {
 919     ARMCPU *cpu = ARM_CPU(obj);
 920     set_feature(&cpu->env, ARM_FEATURE_V7);
 921     set_feature(&cpu->env, ARM_FEATURE_M);
 922     cpu->midr = 0x410fc231;
 923 }
 924
 925 static void cortex_m4_initfn(Object *obj)
 926 {
 927     ARMCPU *cpu = ARM_CPU(obj);
 928
 929     set_feature(&cpu->env, ARM_FEATURE_V7);
 930     set_feature(&cpu->env, ARM_FEATURE_M);
 931     set_feature(&cpu->env, ARM_FEATURE_THUMB_DSP);
 932     cpu->midr = 0x410fc240; /* r0p0 */
 933 }
 934 static void arm_v7m_class_init(ObjectClass *oc, void *data)
 935 {
 936     CPUClass *cc = CPU_CLASS(oc);
 937
 938 #ifndef CONFIG_USER_ONLY
 939     cc->do_interrupt = arm_v7m_cpu_do_interrupt;
 940 #endif
 941
 942     cc->cpu_exec_interrupt = arm_v7m_cpu_exec_interrupt;
 943 }
 944
 945 static const ARMCPRegInfo cortexr5_cp_reginfo[] = {
 946     /* Dummy the TCM region regs for the moment */
 947     { .name = "ATCM", .cp = 15, .opc1 = 0, .crn = 9, .crm = 1, .opc2 = 0,
 948       .access = PL1_RW, .type = ARM_CP_CONST },
 949     { .name = "BTCM", .cp = 15, .opc1 = 0, .crn = 9, .crm = 1, .opc2 = 1,
 950       .access = PL1_RW, .type = ARM_CP_CONST },
 951     REGINFO_SENTINEL
 952 };
 953
 954 static void cortex_r5_initfn(Object *obj)
 955 {
 956     ARMCPU *cpu = ARM_CPU(obj);
 957
 958     set_feature(&cpu->env, ARM_FEATURE_V7);
 959     set_feature(&cpu->env, ARM_FEATURE_THUMB_DIV);
 960     set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);
 961     set_feature(&cpu->env, ARM_FEATURE_V7MP);
 962     set_feature(&cpu->env, ARM_FEATURE_MPU);
 963     cpu->midr = 0x411fc153; /* r1p3 */
 964     cpu->id_pfr0 = 0x0131;
 965     cpu->id_pfr1 = 0x001;
 966     cpu->id_dfr0 = 0x010400;
 967     cpu->id_afr0 = 0x0;
 968     cpu->id_mmfr0 = 0x0210030;
 969     cpu->id_mmfr1 = 0x00000000;
 970     cpu->id_mmfr2 = 0x01200000;
 971     cpu->id_mmfr3 = 0x0211;
 972     cpu->id_isar0 = 0x2101111;
 973     cpu->id_isar1 = 0x13112111;
 974     cpu->id_isar2 = 0x21232141;
 975     cpu->id_isar3 = 0x01112131;
 976     cpu->id_isar4 = 0x0010142;
 977     cpu->id_isar5 = 0x0;
 978     cpu->mp_is_up = true;
 979     define_arm_cp_regs(cpu, cortexr5_cp_reginfo);
 980 }
 981
 982 static const ARMCPRegInfo cortexa8_cp_reginfo[] = {
 983     { .name = "L2LOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 0,
 984       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
 985     { .name = "L2AUXCR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 2,
 986       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
 987     REGINFO_SENTINEL
 988 };
 989
 990 static void cortex_a8_initfn(Object *obj)
 991 {
 992     ARMCPU *cpu = ARM_CPU(obj);
 993
 994     cpu->dtb_compatible = "arm,cortex-a8";
 995     set_feature(&cpu->env, ARM_FEATURE_V7);
 996     set_feature(&cpu->env, ARM_FEATURE_VFP3);
 997     set_feature(&cpu->env, ARM_FEATURE_NEON);
 998     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
 999     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
1000     set_feature(&cpu->env, ARM_FEATURE_EL3);
1001     cpu->midr = 0x410fc080;
1002     cpu->reset_fpsid = 0x410330c0;
1003     cpu->mvfr0 = 0x11110222;
1004     cpu->mvfr1 = 0x00011100;
1005     cpu->ctr = 0x82048004;
1006     cpu->reset_sctlr = 0x00c50078;
1007     cpu->id_pfr0 = 0x1031;
1008     cpu->id_pfr1 = 0x11;
1009     cpu->id_dfr0 = 0x400;
1010     cpu->id_afr0 = 0;
1011     cpu->id_mmfr0 = 0x31100003;
1012     cpu->id_mmfr1 = 0x20000000;
1013     cpu->id_mmfr2 = 0x01202000;
1014     cpu->id_mmfr3 = 0x11;
1015     cpu->id_isar0 = 0x00101111;
1016     cpu->id_isar1 = 0x12112111;
1017     cpu->id_isar2 = 0x21232031;
1018     cpu->id_isar3 = 0x11112131;
1019     cpu->id_isar4 = 0x00111142;
1020     cpu->dbgdidr = 0x15141000;
1021     cpu->clidr = (1 << 27) | (2 << 24) | 3;
1022     cpu->ccsidr[0] = 0xe007e01a; /* 16k L1 dcache. */
1023     cpu->ccsidr[1] = 0x2007e01a; /* 16k L1 icache. */
1024     cpu->ccsidr[2] = 0xf0000000; /* No L2 icache. */
1025     cpu->reset_auxcr = 2;
1026     define_arm_cp_regs(cpu, cortexa8_cp_reginfo);
1027 }
1028
1029 static const ARMCPRegInfo cortexa9_cp_reginfo[] = {
1030     /* power_control should be set to maximum latency. Again,
1031      * default to 0 and set by private hook
1032      */
1033     { .name = "A9_PWRCTL", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 0,
1034       .access = PL1_RW, .resetvalue = 0,
1035       .fieldoffset = offsetof(CPUARMState, cp15.c15_power_control) },
1036     { .name = "A9_DIAG", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 1,
1037       .access = PL1_RW, .resetvalue = 0,
1038       .fieldoffset = offsetof(CPUARMState, cp15.c15_diagnostic) },
1039     { .name = "A9_PWRDIAG", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 2,
1040       .access = PL1_RW, .resetvalue = 0,
1041       .fieldoffset = offsetof(CPUARMState, cp15.c15_power_diagnostic) },
1042     { .name = "NEONBUSY", .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0,
1043       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
1044     /* TLB lockdown control */
1045     { .name = "TLB_LOCKR", .cp = 15, .crn = 15, .crm = 4, .opc1 = 5, .opc2 = 2,
1046       .access = PL1_W, .resetvalue = 0, .type = ARM_CP_NOP },
1047     { .name = "TLB_LOCKW", .cp = 15, .crn = 15, .crm = 4, .opc1 = 5, .opc2 = 4,
1048       .access = PL1_W, .resetvalue = 0, .type = ARM_CP_NOP },
1049     { .name = "TLB_VA", .cp = 15, .crn = 15, .crm = 5, .opc1 = 5, .opc2 = 2,
1050       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
1051     { .name = "TLB_PA", .cp = 15, .crn = 15, .crm = 6, .opc1 = 5, .opc2 = 2,
1052       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
1053     { .name = "TLB_ATTR", .cp = 15, .crn = 15, .crm = 7, .opc1 = 5, .opc2 = 2,
1054       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
1055     REGINFO_SENTINEL
1056 };
1057
1058 static void cortex_a9_initfn(Object *obj)
1059 {
1060     ARMCPU *cpu = ARM_CPU(obj);
1061
1062     cpu->dtb_compatible = "arm,cortex-a9";
1063     set_feature(&cpu->env, ARM_FEATURE_V7);
1064     set_feature(&cpu->env, ARM_FEATURE_VFP3);
1065     set_feature(&cpu->env, ARM_FEATURE_VFP_FP16);
1066     set_feature(&cpu->env, ARM_FEATURE_NEON);
1067     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
1068     set_feature(&cpu->env, ARM_FEATURE_EL3);
1069     /* Note that A9 supports the MP extensions even for
1070      * A9UP and single-core A9MP (which are both different
1071      * and valid configurations; we don't model A9UP).
1072      */
1073     set_feature(&cpu->env, ARM_FEATURE_V7MP);
1074     set_feature(&cpu->env, ARM_FEATURE_CBAR);
1075     cpu->midr = 0x410fc090;
1076     cpu->reset_fpsid = 0x41033090;
1077     cpu->mvfr0 = 0x11110222;
1078     cpu->mvfr1 = 0x01111111;
1079     cpu->ctr = 0x80038003;
1080     cpu->reset_sctlr = 0x00c50078;
1081     cpu->id_pfr0 = 0x1031;
1082     cpu->id_pfr1 = 0x11;
1083     cpu->id_dfr0 = 0x000;
1084     cpu->id_afr0 = 0;
1085     cpu->id_mmfr0 = 0x00100103;
1086     cpu->id_mmfr1 = 0x20000000;
1087     cpu->id_mmfr2 = 0x01230000;
1088     cpu->id_mmfr3 = 0x00002111;
1089     cpu->id_isar0 = 0x00101111;
1090     cpu->id_isar1 = 0x13112111;
1091     cpu->id_isar2 = 0x21232041;
1092     cpu->id_isar3 = 0x11112131;
1093     cpu->id_isar4 = 0x00111142;
1094     cpu->dbgdidr = 0x35141000;
1095     cpu->clidr = (1 << 27) | (1 << 24) | 3;
1096     cpu->ccsidr[0] = 0xe00fe019; /* 16k L1 dcache. */
1097     cpu->ccsidr[1] = 0x200fe019; /* 16k L1 icache. */
1098     define_arm_cp_regs(cpu, cortexa9_cp_reginfo);
1099 }
1100
1101 #ifndef CONFIG_USER_ONLY
1102 static uint64_t a15_l2ctlr_read(CPUARMState *env, const ARMCPRegInfo *ri)
1103 {
1104     /* Linux wants the number of processors from here.
1105      * Might as well set the interrupt-controller bit too.
1106      */
1107     return ((smp_cpus - 1) << 24) | (1 << 23);
1108 }
1109 #endif
1110
1111 static const ARMCPRegInfo cortexa15_cp_reginfo[] = {
1112 #ifndef CONFIG_USER_ONLY
1113     { .name = "L2CTLR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 2,
1114       .access = PL1_RW, .resetvalue = 0, .readfn = a15_l2ctlr_read,
1115       .writefn = arm_cp_write_ignore, },
1116 #endif
1117     { .name = "L2ECTLR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 3,
1118       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
1119     REGINFO_SENTINEL
1120 };
1121
1122 static void cortex_a15_initfn(Object *obj)
1123 {
1124     ARMCPU *cpu = ARM_CPU(obj);
1125
1126     cpu->dtb_compatible = "arm,cortex-a15";
1127     set_feature(&cpu->env, ARM_FEATURE_V7);
1128     set_feature(&cpu->env, ARM_FEATURE_VFP4);
1129     set_feature(&cpu->env, ARM_FEATURE_NEON);
1130     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
1131     set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);
1132     set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER);
1133     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
1134     set_feature(&cpu->env, ARM_FEATURE_CBAR_RO);
1135     set_feature(&cpu->env, ARM_FEATURE_LPAE);
1136     set_feature(&cpu->env, ARM_FEATURE_EL3);
1137     cpu->kvm_target = QEMU_KVM_ARM_TARGET_CORTEX_A15;
1138     cpu->midr = 0x412fc0f1;
1139     cpu->reset_fpsid = 0x410430f0;
1140     cpu->mvfr0 = 0x10110222;
1141     cpu->mvfr1 = 0x11111111;
1142     cpu->ctr = 0x8444c004;
1143     cpu->reset_sctlr = 0x00c50078;
1144     cpu->id_pfr0 = 0x00001131;
1145     cpu->id_pfr1 = 0x00011011;
1146     cpu->id_dfr0 = 0x02010555;
1147     cpu->pmceid0 = 0x0000000;
1148     cpu->pmceid1 = 0x00000000;
1149     cpu->id_afr0 = 0x00000000;
1150     cpu->id_mmfr0 = 0x10201105;
1151     cpu->id_mmfr1 = 0x20000000;
1152     cpu->id_mmfr2 = 0x01240000;
1153     cpu->id_mmfr3 = 0x02102211;
1154     cpu->id_isar0 = 0x02101110;
1155     cpu->id_isar1 = 0x13112111;
1156     cpu->id_isar2 = 0x21232041;
1157     cpu->id_isar3 = 0x11112131;
1158     cpu->id_isar4 = 0x10011142;
1159     cpu->dbgdidr = 0x3515f021;
1160     cpu->clidr = 0x0a200023;
1161     cpu->ccsidr[0] = 0x701fe00a; /* 32K L1 dcache */
1162     cpu->ccsidr[1] = 0x201fe00a; /* 32K L1 icache */
1163     cpu->ccsidr[2] = 0x711fe07a; /* 4096K L2 unified cache */
1164     define_arm_cp_regs(cpu, cortexa15_cp_reginfo);
1165 }
1166
1167 static void ti925t_initfn(Object *obj)
1168 {
1169     ARMCPU *cpu = ARM_CPU(obj);
1170     set_feature(&cpu->env, ARM_FEATURE_V4T);
1171     set_feature(&cpu->env, ARM_FEATURE_OMAPCP);
1172     cpu->midr = ARM_CPUID_TI925T;
1173     cpu->ctr = 0x5109149;
1174     cpu->reset_sctlr = 0x00000070;
1175 }
1176
1177 static void sa1100_initfn(Object *obj)
1178 {
1179     ARMCPU *cpu = ARM_CPU(obj);
1180
1181     cpu->dtb_compatible = "intel,sa1100";
1182     set_feature(&cpu->env, ARM_FEATURE_STRONGARM);
1183     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
1184     cpu->midr = 0x4401A11B;
1185     cpu->reset_sctlr = 0x00000070;
1186 }
1187
1188 static void sa1110_initfn(Object *obj)
1189 {
1190     ARMCPU *cpu = ARM_CPU(obj);
1191     set_feature(&cpu->env, ARM_FEATURE_STRONGARM);
1192     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
1193     cpu->midr = 0x6901B119;
1194     cpu->reset_sctlr = 0x00000070;
1195 }
1196
1197 static void pxa250_initfn(Object *obj)
1198 {
1199     ARMCPU *cpu = ARM_CPU(obj);
1200
1201     cpu->dtb_compatible = "marvell,xscale";
1202     set_feature(&cpu->env, ARM_FEATURE_V5);
1203     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1204     cpu->midr = 0x69052100;
1205     cpu->ctr = 0xd172172;
1206     cpu->reset_sctlr = 0x00000078;
1207 }
1208
1209 static void pxa255_initfn(Object *obj)
1210 {
1211     ARMCPU *cpu = ARM_CPU(obj);
1212
1213     cpu->dtb_compatible = "marvell,xscale";
1214     set_feature(&cpu->env, ARM_FEATURE_V5);
1215     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1216     cpu->midr = 0x69052d00;
1217     cpu->ctr = 0xd172172;
1218     cpu->reset_sctlr = 0x00000078;
1219 }
1220
1221 static void pxa260_initfn(Object *obj)
1222 {
1223     ARMCPU *cpu = ARM_CPU(obj);
1224
1225     cpu->dtb_compatible = "marvell,xscale";
1226     set_feature(&cpu->env, ARM_FEATURE_V5);
1227     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1228     cpu->midr = 0x69052903;
1229     cpu->ctr = 0xd172172;
1230     cpu->reset_sctlr = 0x00000078;
1231 }
1232
1233 static void pxa261_initfn(Object *obj)
1234 {
1235     ARMCPU *cpu = ARM_CPU(obj);
1236
1237     cpu->dtb_compatible = "marvell,xscale";
1238     set_feature(&cpu->env, ARM_FEATURE_V5);
1239     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1240     cpu->midr = 0x69052d05;
1241     cpu->ctr = 0xd172172;
1242     cpu->reset_sctlr = 0x00000078;
1243 }
1244
1245 static void pxa262_initfn(Object *obj)
1246 {
1247     ARMCPU *cpu = ARM_CPU(obj);
1248
1249     cpu->dtb_compatible = "marvell,xscale";
1250     set_feature(&cpu->env, ARM_FEATURE_V5);
1251     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1252     cpu->midr = 0x69052d06;
1253     cpu->ctr = 0xd172172;
1254     cpu->reset_sctlr = 0x00000078;
1255 }
1256
1257 static void pxa270a0_initfn(Object *obj)
1258 {
1259     ARMCPU *cpu = ARM_CPU(obj);
1260
1261     cpu->dtb_compatible = "marvell,xscale";
1262     set_feature(&cpu->env, ARM_FEATURE_V5);
1263     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1264     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1265     cpu->midr = 0x69054110;
1266     cpu->ctr = 0xd172172;
1267     cpu->reset_sctlr = 0x00000078;
1268 }
1269
1270 static void pxa270a1_initfn(Object *obj)
1271 {
1272     ARMCPU *cpu = ARM_CPU(obj);
1273
1274     cpu->dtb_compatible = "marvell,xscale";
1275     set_feature(&cpu->env, ARM_FEATURE_V5);
1276     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1277     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1278     cpu->midr = 0x69054111;
1279     cpu->ctr = 0xd172172;
1280     cpu->reset_sctlr = 0x00000078;
1281 }
1282
1283 static void pxa270b0_initfn(Object *obj)
1284 {
1285     ARMCPU *cpu = ARM_CPU(obj);
1286
1287     cpu->dtb_compatible = "marvell,xscale";
1288     set_feature(&cpu->env, ARM_FEATURE_V5);
1289     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1290     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1291     cpu->midr = 0x69054112;
1292     cpu->ctr = 0xd172172;
1293     cpu->reset_sctlr = 0x00000078;
1294 }
1295
1296 static void pxa270b1_initfn(Object *obj)
1297 {
1298     ARMCPU *cpu = ARM_CPU(obj);
1299
1300     cpu->dtb_compatible = "marvell,xscale";
1301     set_feature(&cpu->env, ARM_FEATURE_V5);
1302     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1303     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1304     cpu->midr = 0x69054113;
1305     cpu->ctr = 0xd172172;
1306     cpu->reset_sctlr = 0x00000078;
1307 }
1308
1309 static void pxa270c0_initfn(Object *obj)
1310 {
1311     ARMCPU *cpu = ARM_CPU(obj);
1312
1313     cpu->dtb_compatible = "marvell,xscale";
1314     set_feature(&cpu->env, ARM_FEATURE_V5);
1315     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1316     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1317     cpu->midr = 0x69054114;
1318     cpu->ctr = 0xd172172;
1319     cpu->reset_sctlr = 0x00000078;
1320 }
1321
1322 static void pxa270c5_initfn(Object *obj)
1323 {
1324     ARMCPU *cpu = ARM_CPU(obj);
1325
1326     cpu->dtb_compatible = "marvell,xscale";
1327     set_feature(&cpu->env, ARM_FEATURE_V5);
1328     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1329     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1330     cpu->midr = 0x69054117;
1331     cpu->ctr = 0xd172172;
1332     cpu->reset_sctlr = 0x00000078;
1333 }
1334
1335 #ifdef CONFIG_USER_ONLY
1336 static void arm_any_initfn(Object *obj)
1337 {
1338     ARMCPU *cpu = ARM_CPU(obj);
1339     set_feature(&cpu->env, ARM_FEATURE_V8);
1340     set_feature(&cpu->env, ARM_FEATURE_VFP4);
1341     set_feature(&cpu->env, ARM_FEATURE_NEON);
1342     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
1343     set_feature(&cpu->env, ARM_FEATURE_V8_AES);
1344     set_feature(&cpu->env, ARM_FEATURE_V8_SHA1);
1345     set_feature(&cpu->env, ARM_FEATURE_V8_SHA256);
1346     set_feature(&cpu->env, ARM_FEATURE_V8_PMULL);
1347     set_feature(&cpu->env, ARM_FEATURE_CRC);
1348     cpu->midr = 0xffffffff;
1349 }
1350 #endif
1351
1352 #endif /* !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64) */
1353
1354 typedef struct ARMCPUInfo {
1355     const char *name;
1356     void (*initfn)(Object *obj);
1357     void (*class_init)(ObjectClass *oc, void *data);
1358 } ARMCPUInfo;
1359
1360 static const ARMCPUInfo arm_cpus[] = {
1361 #if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)
1362     { .name = "arm926",      .initfn = arm926_initfn },
1363     { .name = "arm946",      .initfn = arm946_initfn },
1364     { .name = "arm1026",     .initfn = arm1026_initfn },
1365     /* What QEMU calls "arm1136-r2" is actually the 1136 r0p2, i.e. an
1366      * older core than plain "arm1136". In particular this does not
1367      * have the v6K features.
1368      */
1369     { .name = "arm1136-r2",  .initfn = arm1136_r2_initfn },
1370     { .name = "arm1136",     .initfn = arm1136_initfn },
1371     { .name = "arm1176",     .initfn = arm1176_initfn },
1372     { .name = "arm11mpcore", .initfn = arm11mpcore_initfn },
1373     { .name = "cortex-m3",   .initfn = cortex_m3_initfn,
1374                              .class_init = arm_v7m_class_init },
1375     { .name = "cortex-m4",   .initfn = cortex_m4_initfn,
1376                              .class_init = arm_v7m_class_init },
1377     { .name = "cortex-r5",   .initfn = cortex_r5_initfn },
1378     { .name = "cortex-a8",   .initfn = cortex_a8_initfn },
1379     { .name = "cortex-a9",   .initfn = cortex_a9_initfn },
1380     { .name = "cortex-a15",  .initfn = cortex_a15_initfn },
1381     { .name = "ti925t",      .initfn = ti925t_initfn },
1382     { .name = "sa1100",      .initfn = sa1100_initfn },
1383     { .name = "sa1110",      .initfn = sa1110_initfn },
1384     { .name = "pxa250",      .initfn = pxa250_initfn },
1385     { .name = "pxa255",      .initfn = pxa255_initfn },
1386     { .name = "pxa260",      .initfn = pxa260_initfn },
1387     { .name = "pxa261",      .initfn = pxa261_initfn },
1388     { .name = "pxa262",      .initfn = pxa262_initfn },
1389     /* "pxa270" is an alias for "pxa270-a0" */
1390     { .name = "pxa270",      .initfn = pxa270a0_initfn },
1391     { .name = "pxa270-a0",   .initfn = pxa270a0_initfn },
1392     { .name = "pxa270-a1",   .initfn = pxa270a1_initfn },
1393     { .name = "pxa270-b0",   .initfn = pxa270b0_initfn },
1394     { .name = "pxa270-b1",   .initfn = pxa270b1_initfn },
1395     { .name = "pxa270-c0",   .initfn = pxa270c0_initfn },
1396     { .name = "pxa270-c5",   .initfn = pxa270c5_initfn },
1397 #ifdef CONFIG_USER_ONLY
1398     { .name = "any",         .initfn = arm_any_initfn },
1399 #endif
1400 #endif
1401     { .name = NULL }
1402 };
1403
1404 static Property arm_cpu_properties[] = {
1405     DEFINE_PROP_BOOL("start-powered-off", ARMCPU, start_powered_off, false),
1406     DEFINE_PROP_UINT32("psci-conduit", ARMCPU, psci_conduit, 0),
1407     DEFINE_PROP_UINT32("midr", ARMCPU, midr, 0),
1408     DEFINE_PROP_END_OF_LIST()
1409 };
1410
1411 #ifdef CONFIG_USER_ONLY
1412 static int arm_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
1413                                     int mmu_idx)
1414 {
1415     ARMCPU *cpu = ARM_CPU(cs);
1416     CPUARMState *env = &cpu->env;
1417
1418     env->exception.vaddress = address;
1419     if (rw == 2) {
1420         cs->exception_index = EXCP_PREFETCH_ABORT;
1421     } else {
1422         cs->exception_index = EXCP_DATA_ABORT;
1423     }
1424     return 1;
1425 }
1426 #endif
1427
1428 static gchar *arm_gdb_arch_name(CPUState *cs)
1429 {
1430     ARMCPU *cpu = ARM_CPU(cs);
1431     CPUARMState *env = &cpu->env;
1432
1433     if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
1434         return g_strdup("iwmmxt");
1435     }
1436     return g_strdup("arm");
1437 }
1438
1439 static void arm_cpu_class_init(ObjectClass *oc, void *data)
1440 {
1441     ARMCPUClass *acc = ARM_CPU_CLASS(oc);
1442     CPUClass *cc = CPU_CLASS(acc);
1443     DeviceClass *dc = DEVICE_CLASS(oc);
1444
1445     acc->parent_realize = dc->realize;
1446     dc->realize = arm_cpu_realizefn;
1447     dc->props = arm_cpu_properties;
1448
1449     acc->parent_reset = cc->reset;
1450     cc->reset = arm_cpu_reset;
1451
1452     cc->class_by_name = arm_cpu_class_by_name;
1453     cc->has_work = arm_cpu_has_work;
1454     cc->cpu_exec_interrupt = arm_cpu_exec_interrupt;
1455     cc->dump_state = arm_cpu_dump_state;
1456     cc->set_pc = arm_cpu_set_pc;
1457     cc->gdb_read_register = arm_cpu_gdb_read_register;
1458     cc->gdb_write_register = arm_cpu_gdb_write_register;
1459 #ifdef CONFIG_USER_ONLY
1460     cc->handle_mmu_fault = arm_cpu_handle_mmu_fault;
1461 #else
1462     cc->do_interrupt = arm_cpu_do_interrupt;
1463     cc->do_unaligned_access = arm_cpu_do_unaligned_access;
1464     cc->get_phys_page_attrs_debug = arm_cpu_get_phys_page_attrs_debug;
1465     cc->asidx_from_attrs = arm_asidx_from_attrs;
1466     cc->vmsd = &vmstate_arm_cpu;
1467     cc->virtio_is_big_endian = arm_cpu_virtio_is_big_endian;
1468     cc->write_elf64_note = arm_cpu_write_elf64_note;
1469     cc->write_elf32_note = arm_cpu_write_elf32_note;
1470 #endif
1471     cc->gdb_num_core_regs = 26;
1472     cc->gdb_core_xml_file = "arm-core.xml";
1473     cc->gdb_arch_name = arm_gdb_arch_name;
1474     cc->gdb_stop_before_watchpoint = true;
1475     cc->debug_excp_handler = arm_debug_excp_handler;
1476     cc->debug_check_watchpoint = arm_debug_check_watchpoint;
1477
1478     cc->disas_set_info = arm_disas_set_info;
1479
1480     /*
1481      * Reason: arm_cpu_initfn() calls cpu_exec_init(), which saves
1482      * the object in cpus -> dangling pointer after final
1483      * object_unref().
1484      *
1485      * Once this is fixed, the devices that create ARM CPUs should be
1486      * updated not to set cannot_destroy_with_object_finalize_yet,
1487      * unless they still screw up something else.
1488      */
1489     dc->cannot_destroy_with_object_finalize_yet = true;
1490 }
1491
1492 static void cpu_register(const ARMCPUInfo *info)
1493 {
1494     TypeInfo type_info = {
1495         .parent = TYPE_ARM_CPU,
1496         .instance_size = sizeof(ARMCPU),
1497         .instance_init = info->initfn,
1498         .class_size = sizeof(ARMCPUClass),
1499         .class_init = info->class_init,
1500     };
1501
1502     type_info.name = g_strdup_printf("%s-" TYPE_ARM_CPU, info->name);
1503     type_register(&type_info);
1504     g_free((void *)type_info.name);
1505 }
1506
1507 static const TypeInfo arm_cpu_type_info = {
1508     .name = TYPE_ARM_CPU,
1509     .parent = TYPE_CPU,
1510     .instance_size = sizeof(ARMCPU),
1511     .instance_init = arm_cpu_initfn,
1512     .instance_post_init = arm_cpu_post_init,
1513     .instance_finalize = arm_cpu_finalizefn,
1514     .abstract = true,
1515     .class_size = sizeof(ARMCPUClass),
1516     .class_init = arm_cpu_class_init,
1517 };
1518
1519 static void arm_cpu_register_types(void)
1520 {
1521     const ARMCPUInfo *info = arm_cpus;
1522
1523     type_register_static(&arm_cpu_type_info);
1524
1525     while (info->name) {
1526         cpu_register(info);
1527         info++;
1528     }
1529 }
1530
1531 type_init(arm_cpu_register_types)