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 "cpu.h"
  23 #include "internals.h"
  24 #include "qemu-common.h"
  25 #include "hw/qdev-properties.h"
  26 #if !defined(CONFIG_USER_ONLY)
  27 #include "hw/loader.h"
  28 #endif
  29 #include "hw/arm/arm.h"
  30 #include "sysemu/sysemu.h"
  31 #include "sysemu/kvm.h"
  32 #include "kvm_arm.h"
  33
  34 static void arm_cpu_set_pc(CPUState *cs, vaddr value)
  35 {
  36     ARMCPU *cpu = ARM_CPU(cs);
  37
  38     cpu->env.regs[15] = value;
  39 }
  40
  41 static bool arm_cpu_has_work(CPUState *cs)
  42 {
  43     ARMCPU *cpu = ARM_CPU(cs);
  44
  45     return !cpu->powered_off
  46         && cs->interrupt_request &
  47         (CPU_INTERRUPT_FIQ | CPU_INTERRUPT_HARD
  48          | CPU_INTERRUPT_VFIQ | CPU_INTERRUPT_VIRQ
  49          | CPU_INTERRUPT_EXITTB);
  50 }
  51
  52 static void cp_reg_reset(gpointer key, gpointer value, gpointer opaque)
  53 {
  54     /* Reset a single ARMCPRegInfo register */
  55     ARMCPRegInfo *ri = value;
  56     ARMCPU *cpu = opaque;
  57
  58     if (ri->type & (ARM_CP_SPECIAL | ARM_CP_ALIAS)) {
  59         return;
  60     }
  61
  62     if (ri->resetfn) {
  63         ri->resetfn(&cpu->env, ri);
  64         return;
  65     }
  66
  67     /* A zero offset is never possible as it would be regs[0]
  68      * so we use it to indicate that reset is being handled elsewhere.
  69      * This is basically only used for fields in non-core coprocessors
  70      * (like the pxa2xx ones).
  71      */
  72     if (!ri->fieldoffset) {
  73         return;
  74     }
  75
  76     if (cpreg_field_is_64bit(ri)) {
  77         CPREG_FIELD64(&cpu->env, ri) = ri->resetvalue;
  78     } else {
  79         CPREG_FIELD32(&cpu->env, ri) = ri->resetvalue;
  80     }
  81 }
  82
  83 static void cp_reg_check_reset(gpointer key, gpointer value,  gpointer opaque)
  84 {
  85     /* Purely an assertion check: we've already done reset once,
  86      * so now check that running the reset for the cpreg doesn't
  87      * change its value. This traps bugs where two different cpregs
  88      * both try to reset the same state field but to different values.
  89      */
  90     ARMCPRegInfo *ri = value;
  91     ARMCPU *cpu = opaque;
  92     uint64_t oldvalue, newvalue;
  93
  94     if (ri->type & (ARM_CP_SPECIAL | ARM_CP_ALIAS | ARM_CP_NO_RAW)) {
  95         return;
  96     }
  97
  98     oldvalue = read_raw_cp_reg(&cpu->env, ri);
  99     cp_reg_reset(key, value, opaque);
 100     newvalue = read_raw_cp_reg(&cpu->env, ri);
 101     assert(oldvalue == newvalue);
 102 }
 103
 104 /* CPUClass::reset() */
 105 static void arm_cpu_reset(CPUState *s)
 106 {
 107     ARMCPU *cpu = ARM_CPU(s);
 108     ARMCPUClass *acc = ARM_CPU_GET_CLASS(cpu);
 109     CPUARMState *env = &cpu->env;
 110
 111     acc->parent_reset(s);
 112
 113     memset(env, 0, offsetof(CPUARMState, features));
 114     g_hash_table_foreach(cpu->cp_regs, cp_reg_reset, cpu);
 115     g_hash_table_foreach(cpu->cp_regs, cp_reg_check_reset, cpu);
 116
 117     env->vfp.xregs[ARM_VFP_FPSID] = cpu->reset_fpsid;
 118     env->vfp.xregs[ARM_VFP_MVFR0] = cpu->mvfr0;
 119     env->vfp.xregs[ARM_VFP_MVFR1] = cpu->mvfr1;
 120     env->vfp.xregs[ARM_VFP_MVFR2] = cpu->mvfr2;
 121
 122     cpu->powered_off = cpu->start_powered_off;
 123     s->halted = cpu->start_powered_off;
 124
 125     if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
 126         env->iwmmxt.cregs[ARM_IWMMXT_wCID] = 0x69051000 | 'Q';
 127     }
 128
 129     if (arm_feature(env, ARM_FEATURE_AARCH64)) {
 130         /* 64 bit CPUs always start in 64 bit mode */
 131         env->aarch64 = 1;
 132 #if defined(CONFIG_USER_ONLY)
 133         env->pstate = PSTATE_MODE_EL0t;
 134         /* Userspace expects access to DC ZVA, CTL_EL0 and the cache ops */
 135         env->cp15.sctlr_el[1] |= SCTLR_UCT | SCTLR_UCI | SCTLR_DZE;
 136         /* and to the FP/Neon instructions */
 137         env->cp15.cpacr_el1 = deposit64(env->cp15.cpacr_el1, 20, 2, 3);
 138 #else
 139         /* Reset into the highest available EL */
 140         if (arm_feature(env, ARM_FEATURE_EL3)) {
 141             env->pstate = PSTATE_MODE_EL3h;
 142         } else if (arm_feature(env, ARM_FEATURE_EL2)) {
 143             env->pstate = PSTATE_MODE_EL2h;
 144         } else {
 145             env->pstate = PSTATE_MODE_EL1h;
 146         }
 147         env->pc = cpu->rvbar;
 148 #endif
 149     } else {
 150 #if defined(CONFIG_USER_ONLY)
 151         /* Userspace expects access to cp10 and cp11 for FP/Neon */
 152         env->cp15.cpacr_el1 = deposit64(env->cp15.cpacr_el1, 20, 4, 0xf);
 153 #endif
 154     }
 155
 156 #if defined(CONFIG_USER_ONLY)
 157     env->uncached_cpsr = ARM_CPU_MODE_USR;
 158     /* For user mode we must enable access to coprocessors */
 159     env->vfp.xregs[ARM_VFP_FPEXC] = 1 << 30;
 160     if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
 161         env->cp15.c15_cpar = 3;
 162     } else if (arm_feature(env, ARM_FEATURE_XSCALE)) {
 163         env->cp15.c15_cpar = 1;
 164     }
 165 #else
 166     /* SVC mode with interrupts disabled.  */
 167     env->uncached_cpsr = ARM_CPU_MODE_SVC;
 168     env->daif = PSTATE_D | PSTATE_A | PSTATE_I | PSTATE_F;
 169     /* On ARMv7-M the CPSR_I is the value of the PRIMASK register, and is
 170      * clear at reset. Initial SP and PC are loaded from ROM.
 171      */
 172     if (IS_M(env)) {
 173         uint32_t initial_msp; /* Loaded from 0x0 */
 174         uint32_t initial_pc; /* Loaded from 0x4 */
 175         uint8_t *rom;
 176
 177         env->daif &= ~PSTATE_I;
 178         rom = rom_ptr(0);
 179         if (rom) {
 180             /* Address zero is covered by ROM which hasn't yet been
 181              * copied into physical memory.
 182              */
 183             initial_msp = ldl_p(rom);
 184             initial_pc = ldl_p(rom + 4);
 185         } else {
 186             /* Address zero not covered by a ROM blob, or the ROM blob
 187              * is in non-modifiable memory and this is a second reset after
 188              * it got copied into memory. In the latter case, rom_ptr
 189              * will return a NULL pointer and we should use ldl_phys instead.
 190              */
 191             initial_msp = ldl_phys(s->as, 0);
 192             initial_pc = ldl_phys(s->as, 4);
 193         }
 194
 195         env->regs[13] = initial_msp & 0xFFFFFFFC;
 196         env->regs[15] = initial_pc & ~1;
 197         env->thumb = initial_pc & 1;
 198     }
 199
 200     /* AArch32 has a hard highvec setting of 0xFFFF0000.  If we are currently
 201      * executing as AArch32 then check if highvecs are enabled and
 202      * adjust the PC accordingly.
 203      */
 204     if (A32_BANKED_CURRENT_REG_GET(env, sctlr) & SCTLR_V) {
 205         env->regs[15] = 0xFFFF0000;
 206     }
 207
 208     env->vfp.xregs[ARM_VFP_FPEXC] = 0;
 209 #endif
 210     set_flush_to_zero(1, &env->vfp.standard_fp_status);
 211     set_flush_inputs_to_zero(1, &env->vfp.standard_fp_status);
 212     set_default_nan_mode(1, &env->vfp.standard_fp_status);
 213     set_float_detect_tininess(float_tininess_before_rounding,
 214                               &env->vfp.fp_status);
 215     set_float_detect_tininess(float_tininess_before_rounding,
 216                               &env->vfp.standard_fp_status);
 217     tlb_flush(s, 1);
 218
 219 #ifndef CONFIG_USER_ONLY
 220     if (kvm_enabled()) {
 221         kvm_arm_reset_vcpu(cpu);
 222     }
 223 #endif
 224
 225     hw_breakpoint_update_all(cpu);
 226     hw_watchpoint_update_all(cpu);
 227 }
 228
 229 bool arm_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
 230 {
 231     CPUClass *cc = CPU_GET_CLASS(cs);
 232     CPUARMState *env = cs->env_ptr;
 233     uint32_t cur_el = arm_current_el(env);
 234     bool secure = arm_is_secure(env);
 235     uint32_t target_el;
 236     uint32_t excp_idx;
 237     bool ret = false;
 238
 239     if (interrupt_request & CPU_INTERRUPT_FIQ) {
 240         excp_idx = EXCP_FIQ;
 241         target_el = arm_phys_excp_target_el(cs, excp_idx, cur_el, secure);
 242         if (arm_excp_unmasked(cs, excp_idx, target_el)) {
 243             cs->exception_index = excp_idx;
 244             env->exception.target_el = target_el;
 245             cc->do_interrupt(cs);
 246             ret = true;
 247         }
 248     }
 249     if (interrupt_request & CPU_INTERRUPT_HARD) {
 250         excp_idx = EXCP_IRQ;
 251         target_el = arm_phys_excp_target_el(cs, excp_idx, cur_el, secure);
 252         if (arm_excp_unmasked(cs, excp_idx, target_el)) {
 253             cs->exception_index = excp_idx;
 254             env->exception.target_el = target_el;
 255             cc->do_interrupt(cs);
 256             ret = true;
 257         }
 258     }
 259     if (interrupt_request & CPU_INTERRUPT_VIRQ) {
 260         excp_idx = EXCP_VIRQ;
 261         target_el = 1;
 262         if (arm_excp_unmasked(cs, excp_idx, target_el)) {
 263             cs->exception_index = excp_idx;
 264             env->exception.target_el = target_el;
 265             cc->do_interrupt(cs);
 266             ret = true;
 267         }
 268     }
 269     if (interrupt_request & CPU_INTERRUPT_VFIQ) {
 270         excp_idx = EXCP_VFIQ;
 271         target_el = 1;
 272         if (arm_excp_unmasked(cs, excp_idx, target_el)) {
 273             cs->exception_index = excp_idx;
 274             env->exception.target_el = target_el;
 275             cc->do_interrupt(cs);
 276             ret = true;
 277         }
 278     }
 279
 280     return ret;
 281 }
 282
 283 #if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)
 284 static bool arm_v7m_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
 285 {
 286     CPUClass *cc = CPU_GET_CLASS(cs);
 287     ARMCPU *cpu = ARM_CPU(cs);
 288     CPUARMState *env = &cpu->env;
 289     bool ret = false;
 290
 291
 292     if (interrupt_request & CPU_INTERRUPT_FIQ
 293         && !(env->daif & PSTATE_F)) {
 294         cs->exception_index = EXCP_FIQ;
 295         cc->do_interrupt(cs);
 296         ret = true;
 297     }
 298     /* ARMv7-M interrupt return works by loading a magic value
 299      * into the PC.  On real hardware the load causes the
 300      * return to occur.  The qemu implementation performs the
 301      * jump normally, then does the exception return when the
 302      * CPU tries to execute code at the magic address.
 303      * This will cause the magic PC value to be pushed to
 304      * the stack if an interrupt occurred at the wrong time.
 305      * We avoid this by disabling interrupts when
 306      * pc contains a magic address.
 307      */
 308     if (interrupt_request & CPU_INTERRUPT_HARD
 309         && !(env->daif & PSTATE_I)
 310         && (env->regs[15] < 0xfffffff0)) {
 311         cs->exception_index = EXCP_IRQ;
 312         cc->do_interrupt(cs);
 313         ret = true;
 314     }
 315     return ret;
 316 }
 317 #endif
 318
 319 #ifndef CONFIG_USER_ONLY
 320 static void arm_cpu_set_irq(void *opaque, int irq, int level)
 321 {
 322     ARMCPU *cpu = opaque;
 323     CPUARMState *env = &cpu->env;
 324     CPUState *cs = CPU(cpu);
 325     static const int mask[] = {
 326         [ARM_CPU_IRQ] = CPU_INTERRUPT_HARD,
 327         [ARM_CPU_FIQ] = CPU_INTERRUPT_FIQ,
 328         [ARM_CPU_VIRQ] = CPU_INTERRUPT_VIRQ,
 329         [ARM_CPU_VFIQ] = CPU_INTERRUPT_VFIQ
 330     };
 331
 332     switch (irq) {
 333     case ARM_CPU_VIRQ:
 334     case ARM_CPU_VFIQ:
 335         assert(arm_feature(env, ARM_FEATURE_EL2));
 336         /* fall through */
 337     case ARM_CPU_IRQ:
 338     case ARM_CPU_FIQ:
 339         if (level) {
 340             cpu_interrupt(cs, mask[irq]);
 341         } else {
 342             cpu_reset_interrupt(cs, mask[irq]);
 343         }
 344         break;
 345     default:
 346         g_assert_not_reached();
 347     }
 348 }
 349
 350 static void arm_cpu_kvm_set_irq(void *opaque, int irq, int level)
 351 {
 352 #ifdef CONFIG_KVM
 353     ARMCPU *cpu = opaque;
 354     CPUState *cs = CPU(cpu);
 355     int kvm_irq = KVM_ARM_IRQ_TYPE_CPU << KVM_ARM_IRQ_TYPE_SHIFT;
 356
 357     switch (irq) {
 358     case ARM_CPU_IRQ:
 359         kvm_irq |= KVM_ARM_IRQ_CPU_IRQ;
 360         break;
 361     case ARM_CPU_FIQ:
 362         kvm_irq |= KVM_ARM_IRQ_CPU_FIQ;
 363         break;
 364     default:
 365         g_assert_not_reached();
 366     }
 367     kvm_irq |= cs->cpu_index << KVM_ARM_IRQ_VCPU_SHIFT;
 368     kvm_set_irq(kvm_state, kvm_irq, level ? 1 : 0);
 369 #endif
 370 }
 371
 372 static bool arm_cpu_is_big_endian(CPUState *cs)
 373 {
 374     ARMCPU *cpu = ARM_CPU(cs);
 375     CPUARMState *env = &cpu->env;
 376     int cur_el;
 377
 378     cpu_synchronize_state(cs);
 379
 380     /* In 32bit guest endianness is determined by looking at CPSR's E bit */
 381     if (!is_a64(env)) {
 382         return (env->uncached_cpsr & CPSR_E) ? 1 : 0;
 383     }
 384
 385     cur_el = arm_current_el(env);
 386
 387     if (cur_el == 0) {
 388         return (env->cp15.sctlr_el[1] & SCTLR_E0E) != 0;
 389     }
 390
 391     return (env->cp15.sctlr_el[cur_el] & SCTLR_EE) != 0;
 392 }
 393
 394 #endif
 395
 396 static inline void set_feature(CPUARMState *env, int feature)
 397 {
 398     env->features |= 1ULL << feature;
 399 }
 400
 401 static inline void unset_feature(CPUARMState *env, int feature)
 402 {
 403     env->features &= ~(1ULL << feature);
 404 }
 405
 406 static int
 407 print_insn_thumb1(bfd_vma pc, disassemble_info *info)
 408 {
 409   return print_insn_arm(pc | 1, info);
 410 }
 411
 412 static void arm_disas_set_info(CPUState *cpu, disassemble_info *info)
 413 {
 414     ARMCPU *ac = ARM_CPU(cpu);
 415     CPUARMState *env = &ac->env;
 416
 417     if (is_a64(env)) {
 418         /* We might not be compiled with the A64 disassembler
 419          * because it needs a C++ compiler. Leave print_insn
 420          * unset in this case to use the caller default behaviour.
 421          */
 422 #if defined(CONFIG_ARM_A64_DIS)
 423         info->print_insn = print_insn_arm_a64;
 424 #endif
 425     } else if (env->thumb) {
 426         info->print_insn = print_insn_thumb1;
 427     } else {
 428         info->print_insn = print_insn_arm;
 429     }
 430     if (env->bswap_code) {
 431 #ifdef TARGET_WORDS_BIGENDIAN
 432         info->endian = BFD_ENDIAN_LITTLE;
 433 #else
 434         info->endian = BFD_ENDIAN_BIG;
 435 #endif
 436     }
 437 }
 438
 439 #define ARM_CPUS_PER_CLUSTER 8
 440
 441 static void arm_cpu_initfn(Object *obj)
 442 {
 443     CPUState *cs = CPU(obj);
 444     ARMCPU *cpu = ARM_CPU(obj);
 445     static bool inited;
 446     uint32_t Aff1, Aff0;
 447
 448     cs->env_ptr = &cpu->env;
 449     cpu_exec_init(cs, &error_abort);
 450     cpu->cp_regs = g_hash_table_new_full(g_int_hash, g_int_equal,
 451                                          g_free, g_free);
 452
 453     /* This cpu-id-to-MPIDR affinity is used only for TCG; KVM will override it.
 454      * We don't support setting cluster ID ([16..23]) (known as Aff2
 455      * in later ARM ARM versions), or any of the higher affinity level fields,
 456      * so these bits always RAZ.
 457      */
 458     Aff1 = cs->cpu_index / ARM_CPUS_PER_CLUSTER;
 459     Aff0 = cs->cpu_index % ARM_CPUS_PER_CLUSTER;
 460     cpu->mp_affinity = (Aff1 << ARM_AFF1_SHIFT) | Aff0;
 461
 462 #ifndef CONFIG_USER_ONLY
 463     /* Our inbound IRQ and FIQ lines */
 464     if (kvm_enabled()) {
 465         /* VIRQ and VFIQ are unused with KVM but we add them to maintain
 466          * the same interface as non-KVM CPUs.
 467          */
 468         qdev_init_gpio_in(DEVICE(cpu), arm_cpu_kvm_set_irq, 4);
 469     } else {
 470         qdev_init_gpio_in(DEVICE(cpu), arm_cpu_set_irq, 4);
 471     }
 472
 473     cpu->gt_timer[GTIMER_PHYS] = timer_new(QEMU_CLOCK_VIRTUAL, GTIMER_SCALE,
 474                                                 arm_gt_ptimer_cb, cpu);
 475     cpu->gt_timer[GTIMER_VIRT] = timer_new(QEMU_CLOCK_VIRTUAL, GTIMER_SCALE,
 476                                                 arm_gt_vtimer_cb, cpu);
 477     cpu->gt_timer[GTIMER_HYP] = timer_new(QEMU_CLOCK_VIRTUAL, GTIMER_SCALE,
 478                                                 arm_gt_htimer_cb, cpu);
 479     cpu->gt_timer[GTIMER_SEC] = timer_new(QEMU_CLOCK_VIRTUAL, GTIMER_SCALE,
 480                                                 arm_gt_stimer_cb, cpu);
 481     qdev_init_gpio_out(DEVICE(cpu), cpu->gt_timer_outputs,
 482                        ARRAY_SIZE(cpu->gt_timer_outputs));
 483 #endif
 484
 485     /* DTB consumers generally don't in fact care what the 'compatible'
 486      * string is, so always provide some string and trust that a hypothetical
 487      * picky DTB consumer will also provide a helpful error message.
 488      */
 489     cpu->dtb_compatible = "qemu,unknown";
 490     cpu->psci_version = 1; /* By default assume PSCI v0.1 */
 491     cpu->kvm_target = QEMU_KVM_ARM_TARGET_NONE;
 492
 493     if (tcg_enabled()) {
 494         cpu->psci_version = 2; /* TCG implements PSCI 0.2 */
 495         if (!inited) {
 496             inited = true;
 497             arm_translate_init();
 498         }
 499     }
 500 }
 501
 502 static Property arm_cpu_reset_cbar_property =
 503             DEFINE_PROP_UINT64("reset-cbar", ARMCPU, reset_cbar, 0);
 504
 505 static Property arm_cpu_reset_hivecs_property =
 506             DEFINE_PROP_BOOL("reset-hivecs", ARMCPU, reset_hivecs, false);
 507
 508 static Property arm_cpu_rvbar_property =
 509             DEFINE_PROP_UINT64("rvbar", ARMCPU, rvbar, 0);
 510
 511 static Property arm_cpu_has_el3_property =
 512             DEFINE_PROP_BOOL("has_el3", ARMCPU, has_el3, true);
 513
 514 static Property arm_cpu_has_mpu_property =
 515             DEFINE_PROP_BOOL("has-mpu", ARMCPU, has_mpu, true);
 516
 517 static Property arm_cpu_pmsav7_dregion_property =
 518             DEFINE_PROP_UINT32("pmsav7-dregion", ARMCPU, pmsav7_dregion, 16);
 519
 520 static void arm_cpu_post_init(Object *obj)
 521 {
 522     ARMCPU *cpu = ARM_CPU(obj);
 523
 524     if (arm_feature(&cpu->env, ARM_FEATURE_CBAR) ||
 525         arm_feature(&cpu->env, ARM_FEATURE_CBAR_RO)) {
 526         qdev_property_add_static(DEVICE(obj), &arm_cpu_reset_cbar_property,
 527                                  &error_abort);
 528     }
 529
 530     if (!arm_feature(&cpu->env, ARM_FEATURE_M)) {
 531         qdev_property_add_static(DEVICE(obj), &arm_cpu_reset_hivecs_property,
 532                                  &error_abort);
 533     }
 534
 535     if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) {
 536         qdev_property_add_static(DEVICE(obj), &arm_cpu_rvbar_property,
 537                                  &error_abort);
 538     }
 539
 540     if (arm_feature(&cpu->env, ARM_FEATURE_EL3)) {
 541         /* Add the has_el3 state CPU property only if EL3 is allowed.  This will
 542          * prevent "has_el3" from existing on CPUs which cannot support EL3.
 543          */
 544         qdev_property_add_static(DEVICE(obj), &arm_cpu_has_el3_property,
 545                                  &error_abort);
 546     }
 547
 548     if (arm_feature(&cpu->env, ARM_FEATURE_MPU)) {
 549         qdev_property_add_static(DEVICE(obj), &arm_cpu_has_mpu_property,
 550                                  &error_abort);
 551         if (arm_feature(&cpu->env, ARM_FEATURE_V7)) {
 552             qdev_property_add_static(DEVICE(obj),
 553                                      &arm_cpu_pmsav7_dregion_property,
 554                                      &error_abort);
 555         }
 556     }
 557
 558 }
 559
 560 static void arm_cpu_finalizefn(Object *obj)
 561 {
 562     ARMCPU *cpu = ARM_CPU(obj);
 563     g_hash_table_destroy(cpu->cp_regs);
 564 }
 565
 566 static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
 567 {
 568     CPUState *cs = CPU(dev);
 569     ARMCPU *cpu = ARM_CPU(dev);
 570     ARMCPUClass *acc = ARM_CPU_GET_CLASS(dev);
 571     CPUARMState *env = &cpu->env;
 572
 573     /* Some features automatically imply others: */
 574     if (arm_feature(env, ARM_FEATURE_V8)) {
 575         set_feature(env, ARM_FEATURE_V7);
 576         set_feature(env, ARM_FEATURE_ARM_DIV);
 577         set_feature(env, ARM_FEATURE_LPAE);
 578     }
 579     if (arm_feature(env, ARM_FEATURE_V7)) {
 580         set_feature(env, ARM_FEATURE_VAPA);
 581         set_feature(env, ARM_FEATURE_THUMB2);
 582         set_feature(env, ARM_FEATURE_MPIDR);
 583         if (!arm_feature(env, ARM_FEATURE_M)) {
 584             set_feature(env, ARM_FEATURE_V6K);
 585         } else {
 586             set_feature(env, ARM_FEATURE_V6);
 587         }
 588     }
 589     if (arm_feature(env, ARM_FEATURE_V6K)) {
 590         set_feature(env, ARM_FEATURE_V6);
 591         set_feature(env, ARM_FEATURE_MVFR);
 592     }
 593     if (arm_feature(env, ARM_FEATURE_V6)) {
 594         set_feature(env, ARM_FEATURE_V5);
 595         if (!arm_feature(env, ARM_FEATURE_M)) {
 596             set_feature(env, ARM_FEATURE_AUXCR);
 597         }
 598     }
 599     if (arm_feature(env, ARM_FEATURE_V5)) {
 600         set_feature(env, ARM_FEATURE_V4T);
 601     }
 602     if (arm_feature(env, ARM_FEATURE_M)) {
 603         set_feature(env, ARM_FEATURE_THUMB_DIV);
 604     }
 605     if (arm_feature(env, ARM_FEATURE_ARM_DIV)) {
 606         set_feature(env, ARM_FEATURE_THUMB_DIV);
 607     }
 608     if (arm_feature(env, ARM_FEATURE_VFP4)) {
 609         set_feature(env, ARM_FEATURE_VFP3);
 610         set_feature(env, ARM_FEATURE_VFP_FP16);
 611     }
 612     if (arm_feature(env, ARM_FEATURE_VFP3)) {
 613         set_feature(env, ARM_FEATURE_VFP);
 614     }
 615     if (arm_feature(env, ARM_FEATURE_LPAE)) {
 616         set_feature(env, ARM_FEATURE_V7MP);
 617         set_feature(env, ARM_FEATURE_PXN);
 618     }
 619     if (arm_feature(env, ARM_FEATURE_CBAR_RO)) {
 620         set_feature(env, ARM_FEATURE_CBAR);
 621     }
 622     if (arm_feature(env, ARM_FEATURE_THUMB2) &&
 623         !arm_feature(env, ARM_FEATURE_M)) {
 624         set_feature(env, ARM_FEATURE_THUMB_DSP);
 625     }
 626
 627     if (cpu->reset_hivecs) {
 628             cpu->reset_sctlr |= (1 << 13);
 629     }
 630
 631     if (!cpu->has_el3) {
 632         /* If the has_el3 CPU property is disabled then we need to disable the
 633          * feature.
 634          */
 635         unset_feature(env, ARM_FEATURE_EL3);
 636
 637         /* Disable the security extension feature bits in the processor feature
 638          * registers as well. These are id_pfr1[7:4] and id_aa64pfr0[15:12].
 639          */
 640         cpu->id_pfr1 &= ~0xf0;
 641         cpu->id_aa64pfr0 &= ~0xf000;
 642     }
 643
 644     if (!cpu->has_mpu) {
 645         unset_feature(env, ARM_FEATURE_MPU);
 646     }
 647
 648     if (arm_feature(env, ARM_FEATURE_MPU) &&
 649         arm_feature(env, ARM_FEATURE_V7)) {
 650         uint32_t nr = cpu->pmsav7_dregion;
 651
 652         if (nr > 0xff) {
 653             error_setg(errp, "PMSAv7 MPU #regions invalid %" PRIu32, nr);
 654             return;
 655         }
 656
 657         if (nr) {
 658             env->pmsav7.drbar = g_new0(uint32_t, nr);
 659             env->pmsav7.drsr = g_new0(uint32_t, nr);
 660             env->pmsav7.dracr = g_new0(uint32_t, nr);
 661         }
 662     }
 663
 664     register_cp_regs_for_features(cpu);
 665     arm_cpu_register_gdb_regs_for_features(cpu);
 666
 667     init_cpreg_list(cpu);
 668
 669     qemu_init_vcpu(cs);
 670     cpu_reset(cs);
 671
 672     acc->parent_realize(dev, errp);
 673 }
 674
 675 static ObjectClass *arm_cpu_class_by_name(const char *cpu_model)
 676 {
 677     ObjectClass *oc;
 678     char *typename;
 679     char **cpuname;
 680
 681     if (!cpu_model) {
 682         return NULL;
 683     }
 684
 685     cpuname = g_strsplit(cpu_model, ",", 1);
 686     typename = g_strdup_printf("%s-" TYPE_ARM_CPU, cpuname[0]);
 687     oc = object_class_by_name(typename);
 688     g_strfreev(cpuname);
 689     g_free(typename);
 690     if (!oc || !object_class_dynamic_cast(oc, TYPE_ARM_CPU) ||
 691         object_class_is_abstract(oc)) {
 692         return NULL;
 693     }
 694     return oc;
 695 }
 696
 697 /* CPU models. These are not needed for the AArch64 linux-user build. */
 698 #if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)
 699
 700 static void arm926_initfn(Object *obj)
 701 {
 702     ARMCPU *cpu = ARM_CPU(obj);
 703
 704     cpu->dtb_compatible = "arm,arm926";
 705     set_feature(&cpu->env, ARM_FEATURE_V5);
 706     set_feature(&cpu->env, ARM_FEATURE_VFP);
 707     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 708     set_feature(&cpu->env, ARM_FEATURE_CACHE_TEST_CLEAN);
 709     cpu->midr = 0x41069265;
 710     cpu->reset_fpsid = 0x41011090;
 711     cpu->ctr = 0x1dd20d2;
 712     cpu->reset_sctlr = 0x00090078;
 713 }
 714
 715 static void arm946_initfn(Object *obj)
 716 {
 717     ARMCPU *cpu = ARM_CPU(obj);
 718
 719     cpu->dtb_compatible = "arm,arm946";
 720     set_feature(&cpu->env, ARM_FEATURE_V5);
 721     set_feature(&cpu->env, ARM_FEATURE_MPU);
 722     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 723     cpu->midr = 0x41059461;
 724     cpu->ctr = 0x0f004006;
 725     cpu->reset_sctlr = 0x00000078;
 726 }
 727
 728 static void arm1026_initfn(Object *obj)
 729 {
 730     ARMCPU *cpu = ARM_CPU(obj);
 731
 732     cpu->dtb_compatible = "arm,arm1026";
 733     set_feature(&cpu->env, ARM_FEATURE_V5);
 734     set_feature(&cpu->env, ARM_FEATURE_VFP);
 735     set_feature(&cpu->env, ARM_FEATURE_AUXCR);
 736     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 737     set_feature(&cpu->env, ARM_FEATURE_CACHE_TEST_CLEAN);
 738     cpu->midr = 0x4106a262;
 739     cpu->reset_fpsid = 0x410110a0;
 740     cpu->ctr = 0x1dd20d2;
 741     cpu->reset_sctlr = 0x00090078;
 742     cpu->reset_auxcr = 1;
 743     {
 744         /* The 1026 had an IFAR at c6,c0,0,1 rather than the ARMv6 c6,c0,0,2 */
 745         ARMCPRegInfo ifar = {
 746             .name = "IFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 1,
 747             .access = PL1_RW,
 748             .fieldoffset = offsetof(CPUARMState, cp15.ifar_ns),
 749             .resetvalue = 0
 750         };
 751         define_one_arm_cp_reg(cpu, &ifar);
 752     }
 753 }
 754
 755 static void arm1136_r2_initfn(Object *obj)
 756 {
 757     ARMCPU *cpu = ARM_CPU(obj);
 758     /* What qemu calls "arm1136_r2" is actually the 1136 r0p2, ie an
 759      * older core than plain "arm1136". In particular this does not
 760      * have the v6K features.
 761      * These ID register values are correct for 1136 but may be wrong
 762      * for 1136_r2 (in particular r0p2 does not actually implement most
 763      * of the ID registers).
 764      */
 765
 766     cpu->dtb_compatible = "arm,arm1136";
 767     set_feature(&cpu->env, ARM_FEATURE_V6);
 768     set_feature(&cpu->env, ARM_FEATURE_VFP);
 769     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 770     set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
 771     set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
 772     cpu->midr = 0x4107b362;
 773     cpu->reset_fpsid = 0x410120b4;
 774     cpu->mvfr0 = 0x11111111;
 775     cpu->mvfr1 = 0x00000000;
 776     cpu->ctr = 0x1dd20d2;
 777     cpu->reset_sctlr = 0x00050078;
 778     cpu->id_pfr0 = 0x111;
 779     cpu->id_pfr1 = 0x1;
 780     cpu->id_dfr0 = 0x2;
 781     cpu->id_afr0 = 0x3;
 782     cpu->id_mmfr0 = 0x01130003;
 783     cpu->id_mmfr1 = 0x10030302;
 784     cpu->id_mmfr2 = 0x01222110;
 785     cpu->id_isar0 = 0x00140011;
 786     cpu->id_isar1 = 0x12002111;
 787     cpu->id_isar2 = 0x11231111;
 788     cpu->id_isar3 = 0x01102131;
 789     cpu->id_isar4 = 0x141;
 790     cpu->reset_auxcr = 7;
 791 }
 792
 793 static void arm1136_initfn(Object *obj)
 794 {
 795     ARMCPU *cpu = ARM_CPU(obj);
 796
 797     cpu->dtb_compatible = "arm,arm1136";
 798     set_feature(&cpu->env, ARM_FEATURE_V6K);
 799     set_feature(&cpu->env, ARM_FEATURE_V6);
 800     set_feature(&cpu->env, ARM_FEATURE_VFP);
 801     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 802     set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
 803     set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
 804     cpu->midr = 0x4117b363;
 805     cpu->reset_fpsid = 0x410120b4;
 806     cpu->mvfr0 = 0x11111111;
 807     cpu->mvfr1 = 0x00000000;
 808     cpu->ctr = 0x1dd20d2;
 809     cpu->reset_sctlr = 0x00050078;
 810     cpu->id_pfr0 = 0x111;
 811     cpu->id_pfr1 = 0x1;
 812     cpu->id_dfr0 = 0x2;
 813     cpu->id_afr0 = 0x3;
 814     cpu->id_mmfr0 = 0x01130003;
 815     cpu->id_mmfr1 = 0x10030302;
 816     cpu->id_mmfr2 = 0x01222110;
 817     cpu->id_isar0 = 0x00140011;
 818     cpu->id_isar1 = 0x12002111;
 819     cpu->id_isar2 = 0x11231111;
 820     cpu->id_isar3 = 0x01102131;
 821     cpu->id_isar4 = 0x141;
 822     cpu->reset_auxcr = 7;
 823 }
 824
 825 static void arm1176_initfn(Object *obj)
 826 {
 827     ARMCPU *cpu = ARM_CPU(obj);
 828
 829     cpu->dtb_compatible = "arm,arm1176";
 830     set_feature(&cpu->env, ARM_FEATURE_V6K);
 831     set_feature(&cpu->env, ARM_FEATURE_VFP);
 832     set_feature(&cpu->env, ARM_FEATURE_VAPA);
 833     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 834     set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
 835     set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
 836     set_feature(&cpu->env, ARM_FEATURE_EL3);
 837     cpu->midr = 0x410fb767;
 838     cpu->reset_fpsid = 0x410120b5;
 839     cpu->mvfr0 = 0x11111111;
 840     cpu->mvfr1 = 0x00000000;
 841     cpu->ctr = 0x1dd20d2;
 842     cpu->reset_sctlr = 0x00050078;
 843     cpu->id_pfr0 = 0x111;
 844     cpu->id_pfr1 = 0x11;
 845     cpu->id_dfr0 = 0x33;
 846     cpu->id_afr0 = 0;
 847     cpu->id_mmfr0 = 0x01130003;
 848     cpu->id_mmfr1 = 0x10030302;
 849     cpu->id_mmfr2 = 0x01222100;
 850     cpu->id_isar0 = 0x0140011;
 851     cpu->id_isar1 = 0x12002111;
 852     cpu->id_isar2 = 0x11231121;
 853     cpu->id_isar3 = 0x01102131;
 854     cpu->id_isar4 = 0x01141;
 855     cpu->reset_auxcr = 7;
 856 }
 857
 858 static void arm11mpcore_initfn(Object *obj)
 859 {
 860     ARMCPU *cpu = ARM_CPU(obj);
 861
 862     cpu->dtb_compatible = "arm,arm11mpcore";
 863     set_feature(&cpu->env, ARM_FEATURE_V6K);
 864     set_feature(&cpu->env, ARM_FEATURE_VFP);
 865     set_feature(&cpu->env, ARM_FEATURE_VAPA);
 866     set_feature(&cpu->env, ARM_FEATURE_MPIDR);
 867     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 868     cpu->midr = 0x410fb022;
 869     cpu->reset_fpsid = 0x410120b4;
 870     cpu->mvfr0 = 0x11111111;
 871     cpu->mvfr1 = 0x00000000;
 872     cpu->ctr = 0x1d192992; /* 32K icache 32K dcache */
 873     cpu->id_pfr0 = 0x111;
 874     cpu->id_pfr1 = 0x1;
 875     cpu->id_dfr0 = 0;
 876     cpu->id_afr0 = 0x2;
 877     cpu->id_mmfr0 = 0x01100103;
 878     cpu->id_mmfr1 = 0x10020302;
 879     cpu->id_mmfr2 = 0x01222000;
 880     cpu->id_isar0 = 0x00100011;
 881     cpu->id_isar1 = 0x12002111;
 882     cpu->id_isar2 = 0x11221011;
 883     cpu->id_isar3 = 0x01102131;
 884     cpu->id_isar4 = 0x141;
 885     cpu->reset_auxcr = 1;
 886 }
 887
 888 static void cortex_m3_initfn(Object *obj)
 889 {
 890     ARMCPU *cpu = ARM_CPU(obj);
 891     set_feature(&cpu->env, ARM_FEATURE_V7);
 892     set_feature(&cpu->env, ARM_FEATURE_M);
 893     cpu->midr = 0x410fc231;
 894 }
 895
 896 static void cortex_m4_initfn(Object *obj)
 897 {
 898     ARMCPU *cpu = ARM_CPU(obj);
 899
 900     set_feature(&cpu->env, ARM_FEATURE_V7);
 901     set_feature(&cpu->env, ARM_FEATURE_M);
 902     set_feature(&cpu->env, ARM_FEATURE_THUMB_DSP);
 903     cpu->midr = 0x410fc240; /* r0p0 */
 904 }
 905 static void arm_v7m_class_init(ObjectClass *oc, void *data)
 906 {
 907     CPUClass *cc = CPU_CLASS(oc);
 908
 909 #ifndef CONFIG_USER_ONLY
 910     cc->do_interrupt = arm_v7m_cpu_do_interrupt;
 911 #endif
 912
 913     cc->cpu_exec_interrupt = arm_v7m_cpu_exec_interrupt;
 914 }
 915
 916 static const ARMCPRegInfo cortexr5_cp_reginfo[] = {
 917     /* Dummy the TCM region regs for the moment */
 918     { .name = "ATCM", .cp = 15, .opc1 = 0, .crn = 9, .crm = 1, .opc2 = 0,
 919       .access = PL1_RW, .type = ARM_CP_CONST },
 920     { .name = "BTCM", .cp = 15, .opc1 = 0, .crn = 9, .crm = 1, .opc2 = 1,
 921       .access = PL1_RW, .type = ARM_CP_CONST },
 922     REGINFO_SENTINEL
 923 };
 924
 925 static void cortex_r5_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_THUMB_DIV);
 931     set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);
 932     set_feature(&cpu->env, ARM_FEATURE_V7MP);
 933     set_feature(&cpu->env, ARM_FEATURE_MPU);
 934     cpu->midr = 0x411fc153; /* r1p3 */
 935     cpu->id_pfr0 = 0x0131;
 936     cpu->id_pfr1 = 0x001;
 937     cpu->id_dfr0 = 0x010400;
 938     cpu->id_afr0 = 0x0;
 939     cpu->id_mmfr0 = 0x0210030;
 940     cpu->id_mmfr1 = 0x00000000;
 941     cpu->id_mmfr2 = 0x01200000;
 942     cpu->id_mmfr3 = 0x0211;
 943     cpu->id_isar0 = 0x2101111;
 944     cpu->id_isar1 = 0x13112111;
 945     cpu->id_isar2 = 0x21232141;
 946     cpu->id_isar3 = 0x01112131;
 947     cpu->id_isar4 = 0x0010142;
 948     cpu->id_isar5 = 0x0;
 949     cpu->mp_is_up = true;
 950     define_arm_cp_regs(cpu, cortexr5_cp_reginfo);
 951 }
 952
 953 static const ARMCPRegInfo cortexa8_cp_reginfo[] = {
 954     { .name = "L2LOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 0,
 955       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
 956     { .name = "L2AUXCR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 2,
 957       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
 958     REGINFO_SENTINEL
 959 };
 960
 961 static void cortex_a8_initfn(Object *obj)
 962 {
 963     ARMCPU *cpu = ARM_CPU(obj);
 964
 965     cpu->dtb_compatible = "arm,cortex-a8";
 966     set_feature(&cpu->env, ARM_FEATURE_V7);
 967     set_feature(&cpu->env, ARM_FEATURE_VFP3);
 968     set_feature(&cpu->env, ARM_FEATURE_NEON);
 969     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
 970     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 971     set_feature(&cpu->env, ARM_FEATURE_EL3);
 972     cpu->midr = 0x410fc080;
 973     cpu->reset_fpsid = 0x410330c0;
 974     cpu->mvfr0 = 0x11110222;
 975     cpu->mvfr1 = 0x00011100;
 976     cpu->ctr = 0x82048004;
 977     cpu->reset_sctlr = 0x00c50078;
 978     cpu->id_pfr0 = 0x1031;
 979     cpu->id_pfr1 = 0x11;
 980     cpu->id_dfr0 = 0x400;
 981     cpu->id_afr0 = 0;
 982     cpu->id_mmfr0 = 0x31100003;
 983     cpu->id_mmfr1 = 0x20000000;
 984     cpu->id_mmfr2 = 0x01202000;
 985     cpu->id_mmfr3 = 0x11;
 986     cpu->id_isar0 = 0x00101111;
 987     cpu->id_isar1 = 0x12112111;
 988     cpu->id_isar2 = 0x21232031;
 989     cpu->id_isar3 = 0x11112131;
 990     cpu->id_isar4 = 0x00111142;
 991     cpu->dbgdidr = 0x15141000;
 992     cpu->clidr = (1 << 27) | (2 << 24) | 3;
 993     cpu->ccsidr[0] = 0xe007e01a; /* 16k L1 dcache. */
 994     cpu->ccsidr[1] = 0x2007e01a; /* 16k L1 icache. */
 995     cpu->ccsidr[2] = 0xf0000000; /* No L2 icache. */
 996     cpu->reset_auxcr = 2;
 997     define_arm_cp_regs(cpu, cortexa8_cp_reginfo);
 998 }
 999
1000 static const ARMCPRegInfo cortexa9_cp_reginfo[] = {
1001     /* power_control should be set to maximum latency. Again,
1002      * default to 0 and set by private hook
1003      */
1004     { .name = "A9_PWRCTL", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 0,
1005       .access = PL1_RW, .resetvalue = 0,
1006       .fieldoffset = offsetof(CPUARMState, cp15.c15_power_control) },
1007     { .name = "A9_DIAG", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 1,
1008       .access = PL1_RW, .resetvalue = 0,
1009       .fieldoffset = offsetof(CPUARMState, cp15.c15_diagnostic) },
1010     { .name = "A9_PWRDIAG", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 2,
1011       .access = PL1_RW, .resetvalue = 0,
1012       .fieldoffset = offsetof(CPUARMState, cp15.c15_power_diagnostic) },
1013     { .name = "NEONBUSY", .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0,
1014       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
1015     /* TLB lockdown control */
1016     { .name = "TLB_LOCKR", .cp = 15, .crn = 15, .crm = 4, .opc1 = 5, .opc2 = 2,
1017       .access = PL1_W, .resetvalue = 0, .type = ARM_CP_NOP },
1018     { .name = "TLB_LOCKW", .cp = 15, .crn = 15, .crm = 4, .opc1 = 5, .opc2 = 4,
1019       .access = PL1_W, .resetvalue = 0, .type = ARM_CP_NOP },
1020     { .name = "TLB_VA", .cp = 15, .crn = 15, .crm = 5, .opc1 = 5, .opc2 = 2,
1021       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
1022     { .name = "TLB_PA", .cp = 15, .crn = 15, .crm = 6, .opc1 = 5, .opc2 = 2,
1023       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
1024     { .name = "TLB_ATTR", .cp = 15, .crn = 15, .crm = 7, .opc1 = 5, .opc2 = 2,
1025       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
1026     REGINFO_SENTINEL
1027 };
1028
1029 static void cortex_a9_initfn(Object *obj)
1030 {
1031     ARMCPU *cpu = ARM_CPU(obj);
1032
1033     cpu->dtb_compatible = "arm,cortex-a9";
1034     set_feature(&cpu->env, ARM_FEATURE_V7);
1035     set_feature(&cpu->env, ARM_FEATURE_VFP3);
1036     set_feature(&cpu->env, ARM_FEATURE_VFP_FP16);
1037     set_feature(&cpu->env, ARM_FEATURE_NEON);
1038     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
1039     set_feature(&cpu->env, ARM_FEATURE_EL3);
1040     /* Note that A9 supports the MP extensions even for
1041      * A9UP and single-core A9MP (which are both different
1042      * and valid configurations; we don't model A9UP).
1043      */
1044     set_feature(&cpu->env, ARM_FEATURE_V7MP);
1045     set_feature(&cpu->env, ARM_FEATURE_CBAR);
1046     cpu->midr = 0x410fc090;
1047     cpu->reset_fpsid = 0x41033090;
1048     cpu->mvfr0 = 0x11110222;
1049     cpu->mvfr1 = 0x01111111;
1050     cpu->ctr = 0x80038003;
1051     cpu->reset_sctlr = 0x00c50078;
1052     cpu->id_pfr0 = 0x1031;
1053     cpu->id_pfr1 = 0x11;
1054     cpu->id_dfr0 = 0x000;
1055     cpu->id_afr0 = 0;
1056     cpu->id_mmfr0 = 0x00100103;
1057     cpu->id_mmfr1 = 0x20000000;
1058     cpu->id_mmfr2 = 0x01230000;
1059     cpu->id_mmfr3 = 0x00002111;
1060     cpu->id_isar0 = 0x00101111;
1061     cpu->id_isar1 = 0x13112111;
1062     cpu->id_isar2 = 0x21232041;
1063     cpu->id_isar3 = 0x11112131;
1064     cpu->id_isar4 = 0x00111142;
1065     cpu->dbgdidr = 0x35141000;
1066     cpu->clidr = (1 << 27) | (1 << 24) | 3;
1067     cpu->ccsidr[0] = 0xe00fe019; /* 16k L1 dcache. */
1068     cpu->ccsidr[1] = 0x200fe019; /* 16k L1 icache. */
1069     define_arm_cp_regs(cpu, cortexa9_cp_reginfo);
1070 }
1071
1072 #ifndef CONFIG_USER_ONLY
1073 static uint64_t a15_l2ctlr_read(CPUARMState *env, const ARMCPRegInfo *ri)
1074 {
1075     /* Linux wants the number of processors from here.
1076      * Might as well set the interrupt-controller bit too.
1077      */
1078     return ((smp_cpus - 1) << 24) | (1 << 23);
1079 }
1080 #endif
1081
1082 static const ARMCPRegInfo cortexa15_cp_reginfo[] = {
1083 #ifndef CONFIG_USER_ONLY
1084     { .name = "L2CTLR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 2,
1085       .access = PL1_RW, .resetvalue = 0, .readfn = a15_l2ctlr_read,
1086       .writefn = arm_cp_write_ignore, },
1087 #endif
1088     { .name = "L2ECTLR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 3,
1089       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
1090     REGINFO_SENTINEL
1091 };
1092
1093 static void cortex_a15_initfn(Object *obj)
1094 {
1095     ARMCPU *cpu = ARM_CPU(obj);
1096
1097     cpu->dtb_compatible = "arm,cortex-a15";
1098     set_feature(&cpu->env, ARM_FEATURE_V7);
1099     set_feature(&cpu->env, ARM_FEATURE_VFP4);
1100     set_feature(&cpu->env, ARM_FEATURE_NEON);
1101     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
1102     set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);
1103     set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER);
1104     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
1105     set_feature(&cpu->env, ARM_FEATURE_CBAR_RO);
1106     set_feature(&cpu->env, ARM_FEATURE_LPAE);
1107     set_feature(&cpu->env, ARM_FEATURE_EL3);
1108     cpu->kvm_target = QEMU_KVM_ARM_TARGET_CORTEX_A15;
1109     cpu->midr = 0x412fc0f1;
1110     cpu->reset_fpsid = 0x410430f0;
1111     cpu->mvfr0 = 0x10110222;
1112     cpu->mvfr1 = 0x11111111;
1113     cpu->ctr = 0x8444c004;
1114     cpu->reset_sctlr = 0x00c50078;
1115     cpu->id_pfr0 = 0x00001131;
1116     cpu->id_pfr1 = 0x00011011;
1117     cpu->id_dfr0 = 0x02010555;
1118     cpu->id_afr0 = 0x00000000;
1119     cpu->id_mmfr0 = 0x10201105;
1120     cpu->id_mmfr1 = 0x20000000;
1121     cpu->id_mmfr2 = 0x01240000;
1122     cpu->id_mmfr3 = 0x02102211;
1123     cpu->id_isar0 = 0x02101110;
1124     cpu->id_isar1 = 0x13112111;
1125     cpu->id_isar2 = 0x21232041;
1126     cpu->id_isar3 = 0x11112131;
1127     cpu->id_isar4 = 0x10011142;
1128     cpu->dbgdidr = 0x3515f021;
1129     cpu->clidr = 0x0a200023;
1130     cpu->ccsidr[0] = 0x701fe00a; /* 32K L1 dcache */
1131     cpu->ccsidr[1] = 0x201fe00a; /* 32K L1 icache */
1132     cpu->ccsidr[2] = 0x711fe07a; /* 4096K L2 unified cache */
1133     define_arm_cp_regs(cpu, cortexa15_cp_reginfo);
1134 }
1135
1136 static void ti925t_initfn(Object *obj)
1137 {
1138     ARMCPU *cpu = ARM_CPU(obj);
1139     set_feature(&cpu->env, ARM_FEATURE_V4T);
1140     set_feature(&cpu->env, ARM_FEATURE_OMAPCP);
1141     cpu->midr = ARM_CPUID_TI925T;
1142     cpu->ctr = 0x5109149;
1143     cpu->reset_sctlr = 0x00000070;
1144 }
1145
1146 static void sa1100_initfn(Object *obj)
1147 {
1148     ARMCPU *cpu = ARM_CPU(obj);
1149
1150     cpu->dtb_compatible = "intel,sa1100";
1151     set_feature(&cpu->env, ARM_FEATURE_STRONGARM);
1152     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
1153     cpu->midr = 0x4401A11B;
1154     cpu->reset_sctlr = 0x00000070;
1155 }
1156
1157 static void sa1110_initfn(Object *obj)
1158 {
1159     ARMCPU *cpu = ARM_CPU(obj);
1160     set_feature(&cpu->env, ARM_FEATURE_STRONGARM);
1161     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
1162     cpu->midr = 0x6901B119;
1163     cpu->reset_sctlr = 0x00000070;
1164 }
1165
1166 static void pxa250_initfn(Object *obj)
1167 {
1168     ARMCPU *cpu = ARM_CPU(obj);
1169
1170     cpu->dtb_compatible = "marvell,xscale";
1171     set_feature(&cpu->env, ARM_FEATURE_V5);
1172     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1173     cpu->midr = 0x69052100;
1174     cpu->ctr = 0xd172172;
1175     cpu->reset_sctlr = 0x00000078;
1176 }
1177
1178 static void pxa255_initfn(Object *obj)
1179 {
1180     ARMCPU *cpu = ARM_CPU(obj);
1181
1182     cpu->dtb_compatible = "marvell,xscale";
1183     set_feature(&cpu->env, ARM_FEATURE_V5);
1184     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1185     cpu->midr = 0x69052d00;
1186     cpu->ctr = 0xd172172;
1187     cpu->reset_sctlr = 0x00000078;
1188 }
1189
1190 static void pxa260_initfn(Object *obj)
1191 {
1192     ARMCPU *cpu = ARM_CPU(obj);
1193
1194     cpu->dtb_compatible = "marvell,xscale";
1195     set_feature(&cpu->env, ARM_FEATURE_V5);
1196     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1197     cpu->midr = 0x69052903;
1198     cpu->ctr = 0xd172172;
1199     cpu->reset_sctlr = 0x00000078;
1200 }
1201
1202 static void pxa261_initfn(Object *obj)
1203 {
1204     ARMCPU *cpu = ARM_CPU(obj);
1205
1206     cpu->dtb_compatible = "marvell,xscale";
1207     set_feature(&cpu->env, ARM_FEATURE_V5);
1208     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1209     cpu->midr = 0x69052d05;
1210     cpu->ctr = 0xd172172;
1211     cpu->reset_sctlr = 0x00000078;
1212 }
1213
1214 static void pxa262_initfn(Object *obj)
1215 {
1216     ARMCPU *cpu = ARM_CPU(obj);
1217
1218     cpu->dtb_compatible = "marvell,xscale";
1219     set_feature(&cpu->env, ARM_FEATURE_V5);
1220     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1221     cpu->midr = 0x69052d06;
1222     cpu->ctr = 0xd172172;
1223     cpu->reset_sctlr = 0x00000078;
1224 }
1225
1226 static void pxa270a0_initfn(Object *obj)
1227 {
1228     ARMCPU *cpu = ARM_CPU(obj);
1229
1230     cpu->dtb_compatible = "marvell,xscale";
1231     set_feature(&cpu->env, ARM_FEATURE_V5);
1232     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1233     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1234     cpu->midr = 0x69054110;
1235     cpu->ctr = 0xd172172;
1236     cpu->reset_sctlr = 0x00000078;
1237 }
1238
1239 static void pxa270a1_initfn(Object *obj)
1240 {
1241     ARMCPU *cpu = ARM_CPU(obj);
1242
1243     cpu->dtb_compatible = "marvell,xscale";
1244     set_feature(&cpu->env, ARM_FEATURE_V5);
1245     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1246     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1247     cpu->midr = 0x69054111;
1248     cpu->ctr = 0xd172172;
1249     cpu->reset_sctlr = 0x00000078;
1250 }
1251
1252 static void pxa270b0_initfn(Object *obj)
1253 {
1254     ARMCPU *cpu = ARM_CPU(obj);
1255
1256     cpu->dtb_compatible = "marvell,xscale";
1257     set_feature(&cpu->env, ARM_FEATURE_V5);
1258     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1259     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1260     cpu->midr = 0x69054112;
1261     cpu->ctr = 0xd172172;
1262     cpu->reset_sctlr = 0x00000078;
1263 }
1264
1265 static void pxa270b1_initfn(Object *obj)
1266 {
1267     ARMCPU *cpu = ARM_CPU(obj);
1268
1269     cpu->dtb_compatible = "marvell,xscale";
1270     set_feature(&cpu->env, ARM_FEATURE_V5);
1271     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1272     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1273     cpu->midr = 0x69054113;
1274     cpu->ctr = 0xd172172;
1275     cpu->reset_sctlr = 0x00000078;
1276 }
1277
1278 static void pxa270c0_initfn(Object *obj)
1279 {
1280     ARMCPU *cpu = ARM_CPU(obj);
1281
1282     cpu->dtb_compatible = "marvell,xscale";
1283     set_feature(&cpu->env, ARM_FEATURE_V5);
1284     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1285     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1286     cpu->midr = 0x69054114;
1287     cpu->ctr = 0xd172172;
1288     cpu->reset_sctlr = 0x00000078;
1289 }
1290
1291 static void pxa270c5_initfn(Object *obj)
1292 {
1293     ARMCPU *cpu = ARM_CPU(obj);
1294
1295     cpu->dtb_compatible = "marvell,xscale";
1296     set_feature(&cpu->env, ARM_FEATURE_V5);
1297     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1298     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1299     cpu->midr = 0x69054117;
1300     cpu->ctr = 0xd172172;
1301     cpu->reset_sctlr = 0x00000078;
1302 }
1303
1304 #ifdef CONFIG_USER_ONLY
1305 static void arm_any_initfn(Object *obj)
1306 {
1307     ARMCPU *cpu = ARM_CPU(obj);
1308     set_feature(&cpu->env, ARM_FEATURE_V8);
1309     set_feature(&cpu->env, ARM_FEATURE_VFP4);
1310     set_feature(&cpu->env, ARM_FEATURE_NEON);
1311     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
1312     set_feature(&cpu->env, ARM_FEATURE_V8_AES);
1313     set_feature(&cpu->env, ARM_FEATURE_V8_SHA1);
1314     set_feature(&cpu->env, ARM_FEATURE_V8_SHA256);
1315     set_feature(&cpu->env, ARM_FEATURE_V8_PMULL);
1316     set_feature(&cpu->env, ARM_FEATURE_CRC);
1317     cpu->midr = 0xffffffff;
1318 }
1319 #endif
1320
1321 #endif /* !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64) */
1322
1323 typedef struct ARMCPUInfo {
1324     const char *name;
1325     void (*initfn)(Object *obj);
1326     void (*class_init)(ObjectClass *oc, void *data);
1327 } ARMCPUInfo;
1328
1329 static const ARMCPUInfo arm_cpus[] = {
1330 #if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)
1331     { .name = "arm926",      .initfn = arm926_initfn },
1332     { .name = "arm946",      .initfn = arm946_initfn },
1333     { .name = "arm1026",     .initfn = arm1026_initfn },
1334     /* What QEMU calls "arm1136-r2" is actually the 1136 r0p2, i.e. an
1335      * older core than plain "arm1136". In particular this does not
1336      * have the v6K features.
1337      */
1338     { .name = "arm1136-r2",  .initfn = arm1136_r2_initfn },
1339     { .name = "arm1136",     .initfn = arm1136_initfn },
1340     { .name = "arm1176",     .initfn = arm1176_initfn },
1341     { .name = "arm11mpcore", .initfn = arm11mpcore_initfn },
1342     { .name = "cortex-m3",   .initfn = cortex_m3_initfn,
1343                              .class_init = arm_v7m_class_init },
1344     { .name = "cortex-m4",   .initfn = cortex_m4_initfn,
1345                              .class_init = arm_v7m_class_init },
1346     { .name = "cortex-r5",   .initfn = cortex_r5_initfn },
1347     { .name = "cortex-a8",   .initfn = cortex_a8_initfn },
1348     { .name = "cortex-a9",   .initfn = cortex_a9_initfn },
1349     { .name = "cortex-a15",  .initfn = cortex_a15_initfn },
1350     { .name = "ti925t",      .initfn = ti925t_initfn },
1351     { .name = "sa1100",      .initfn = sa1100_initfn },
1352     { .name = "sa1110",      .initfn = sa1110_initfn },
1353     { .name = "pxa250",      .initfn = pxa250_initfn },
1354     { .name = "pxa255",      .initfn = pxa255_initfn },
1355     { .name = "pxa260",      .initfn = pxa260_initfn },
1356     { .name = "pxa261",      .initfn = pxa261_initfn },
1357     { .name = "pxa262",      .initfn = pxa262_initfn },
1358     /* "pxa270" is an alias for "pxa270-a0" */
1359     { .name = "pxa270",      .initfn = pxa270a0_initfn },
1360     { .name = "pxa270-a0",   .initfn = pxa270a0_initfn },
1361     { .name = "pxa270-a1",   .initfn = pxa270a1_initfn },
1362     { .name = "pxa270-b0",   .initfn = pxa270b0_initfn },
1363     { .name = "pxa270-b1",   .initfn = pxa270b1_initfn },
1364     { .name = "pxa270-c0",   .initfn = pxa270c0_initfn },
1365     { .name = "pxa270-c5",   .initfn = pxa270c5_initfn },
1366 #ifdef CONFIG_USER_ONLY
1367     { .name = "any",         .initfn = arm_any_initfn },
1368 #endif
1369 #endif
1370     { .name = NULL }
1371 };
1372
1373 static Property arm_cpu_properties[] = {
1374     DEFINE_PROP_BOOL("start-powered-off", ARMCPU, start_powered_off, false),
1375     DEFINE_PROP_UINT32("psci-conduit", ARMCPU, psci_conduit, 0),
1376     DEFINE_PROP_UINT32("midr", ARMCPU, midr, 0),
1377     DEFINE_PROP_END_OF_LIST()
1378 };
1379
1380 #ifdef CONFIG_USER_ONLY
1381 static int arm_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
1382                                     int mmu_idx)
1383 {
1384     ARMCPU *cpu = ARM_CPU(cs);
1385     CPUARMState *env = &cpu->env;
1386
1387     env->exception.vaddress = address;
1388     if (rw == 2) {
1389         cs->exception_index = EXCP_PREFETCH_ABORT;
1390     } else {
1391         cs->exception_index = EXCP_DATA_ABORT;
1392     }
1393     return 1;
1394 }
1395 #endif
1396
1397 static void arm_cpu_class_init(ObjectClass *oc, void *data)
1398 {
1399     ARMCPUClass *acc = ARM_CPU_CLASS(oc);
1400     CPUClass *cc = CPU_CLASS(acc);
1401     DeviceClass *dc = DEVICE_CLASS(oc);
1402
1403     acc->parent_realize = dc->realize;
1404     dc->realize = arm_cpu_realizefn;
1405     dc->props = arm_cpu_properties;
1406
1407     acc->parent_reset = cc->reset;
1408     cc->reset = arm_cpu_reset;
1409
1410     cc->class_by_name = arm_cpu_class_by_name;
1411     cc->has_work = arm_cpu_has_work;
1412     cc->cpu_exec_interrupt = arm_cpu_exec_interrupt;
1413     cc->dump_state = arm_cpu_dump_state;
1414     cc->set_pc = arm_cpu_set_pc;
1415     cc->gdb_read_register = arm_cpu_gdb_read_register;
1416     cc->gdb_write_register = arm_cpu_gdb_write_register;
1417 #ifdef CONFIG_USER_ONLY
1418     cc->handle_mmu_fault = arm_cpu_handle_mmu_fault;
1419 #else
1420     cc->do_interrupt = arm_cpu_do_interrupt;
1421     cc->do_unaligned_access = arm_cpu_do_unaligned_access;
1422     cc->get_phys_page_debug = arm_cpu_get_phys_page_debug;
1423     cc->vmsd = &vmstate_arm_cpu;
1424     cc->virtio_is_big_endian = arm_cpu_is_big_endian;
1425     cc->write_elf64_note = arm_cpu_write_elf64_note;
1426     cc->write_elf32_note = arm_cpu_write_elf32_note;
1427 #endif
1428     cc->gdb_num_core_regs = 26;
1429     cc->gdb_core_xml_file = "arm-core.xml";
1430     cc->gdb_stop_before_watchpoint = true;
1431     cc->debug_excp_handler = arm_debug_excp_handler;
1432
1433     cc->disas_set_info = arm_disas_set_info;
1434
1435     /*
1436      * Reason: arm_cpu_initfn() calls cpu_exec_init(), which saves
1437      * the object in cpus -> dangling pointer after final
1438      * object_unref().
1439      *
1440      * Once this is fixed, the devices that create ARM CPUs should be
1441      * updated not to set cannot_destroy_with_object_finalize_yet,
1442      * unless they still screw up something else.
1443      */
1444     dc->cannot_destroy_with_object_finalize_yet = true;
1445 }
1446
1447 static void cpu_register(const ARMCPUInfo *info)
1448 {
1449     TypeInfo type_info = {
1450         .parent = TYPE_ARM_CPU,
1451         .instance_size = sizeof(ARMCPU),
1452         .instance_init = info->initfn,
1453         .class_size = sizeof(ARMCPUClass),
1454         .class_init = info->class_init,
1455     };
1456
1457     type_info.name = g_strdup_printf("%s-" TYPE_ARM_CPU, info->name);
1458     type_register(&type_info);
1459     g_free((void *)type_info.name);
1460 }
1461
1462 static const TypeInfo arm_cpu_type_info = {
1463     .name = TYPE_ARM_CPU,
1464     .parent = TYPE_CPU,
1465     .instance_size = sizeof(ARMCPU),
1466     .instance_init = arm_cpu_initfn,
1467     .instance_post_init = arm_cpu_post_init,
1468     .instance_finalize = arm_cpu_finalizefn,
1469     .abstract = true,
1470     .class_size = sizeof(ARMCPUClass),
1471     .class_init = arm_cpu_class_init,
1472 };
1473
1474 static void arm_cpu_register_types(void)
1475 {
1476     const ARMCPUInfo *info = arm_cpus;
1477
1478     type_register_static(&arm_cpu_type_info);
1479
1480     while (info->name) {
1481         cpu_register(info);
1482         info++;
1483     }
1484 }
1485
1486 type_init(arm_cpu_register_types)