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 #ifndef CONFIG_USER_ONLY
 548         object_property_add_link(obj, "secure-memory",
 549                                  TYPE_MEMORY_REGION,
 550                                  (Object **)&cpu->secure_memory,
 551                                  qdev_prop_allow_set_link_before_realize,
 552                                  OBJ_PROP_LINK_UNREF_ON_RELEASE,
 553                                  &error_abort);
 554 #endif
 555     }
 556
 557     if (arm_feature(&cpu->env, ARM_FEATURE_MPU)) {
 558         qdev_property_add_static(DEVICE(obj), &arm_cpu_has_mpu_property,
 559                                  &error_abort);
 560         if (arm_feature(&cpu->env, ARM_FEATURE_V7)) {
 561             qdev_property_add_static(DEVICE(obj),
 562                                      &arm_cpu_pmsav7_dregion_property,
 563                                      &error_abort);
 564         }
 565     }
 566
 567 }
 568
 569 static void arm_cpu_finalizefn(Object *obj)
 570 {
 571     ARMCPU *cpu = ARM_CPU(obj);
 572     g_hash_table_destroy(cpu->cp_regs);
 573 }
 574
 575 static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
 576 {
 577     CPUState *cs = CPU(dev);
 578     ARMCPU *cpu = ARM_CPU(dev);
 579     ARMCPUClass *acc = ARM_CPU_GET_CLASS(dev);
 580     CPUARMState *env = &cpu->env;
 581
 582     /* Some features automatically imply others: */
 583     if (arm_feature(env, ARM_FEATURE_V8)) {
 584         set_feature(env, ARM_FEATURE_V7);
 585         set_feature(env, ARM_FEATURE_ARM_DIV);
 586         set_feature(env, ARM_FEATURE_LPAE);
 587     }
 588     if (arm_feature(env, ARM_FEATURE_V7)) {
 589         set_feature(env, ARM_FEATURE_VAPA);
 590         set_feature(env, ARM_FEATURE_THUMB2);
 591         set_feature(env, ARM_FEATURE_MPIDR);
 592         if (!arm_feature(env, ARM_FEATURE_M)) {
 593             set_feature(env, ARM_FEATURE_V6K);
 594         } else {
 595             set_feature(env, ARM_FEATURE_V6);
 596         }
 597     }
 598     if (arm_feature(env, ARM_FEATURE_V6K)) {
 599         set_feature(env, ARM_FEATURE_V6);
 600         set_feature(env, ARM_FEATURE_MVFR);
 601     }
 602     if (arm_feature(env, ARM_FEATURE_V6)) {
 603         set_feature(env, ARM_FEATURE_V5);
 604         if (!arm_feature(env, ARM_FEATURE_M)) {
 605             set_feature(env, ARM_FEATURE_AUXCR);
 606         }
 607     }
 608     if (arm_feature(env, ARM_FEATURE_V5)) {
 609         set_feature(env, ARM_FEATURE_V4T);
 610     }
 611     if (arm_feature(env, ARM_FEATURE_M)) {
 612         set_feature(env, ARM_FEATURE_THUMB_DIV);
 613     }
 614     if (arm_feature(env, ARM_FEATURE_ARM_DIV)) {
 615         set_feature(env, ARM_FEATURE_THUMB_DIV);
 616     }
 617     if (arm_feature(env, ARM_FEATURE_VFP4)) {
 618         set_feature(env, ARM_FEATURE_VFP3);
 619         set_feature(env, ARM_FEATURE_VFP_FP16);
 620     }
 621     if (arm_feature(env, ARM_FEATURE_VFP3)) {
 622         set_feature(env, ARM_FEATURE_VFP);
 623     }
 624     if (arm_feature(env, ARM_FEATURE_LPAE)) {
 625         set_feature(env, ARM_FEATURE_V7MP);
 626         set_feature(env, ARM_FEATURE_PXN);
 627     }
 628     if (arm_feature(env, ARM_FEATURE_CBAR_RO)) {
 629         set_feature(env, ARM_FEATURE_CBAR);
 630     }
 631     if (arm_feature(env, ARM_FEATURE_THUMB2) &&
 632         !arm_feature(env, ARM_FEATURE_M)) {
 633         set_feature(env, ARM_FEATURE_THUMB_DSP);
 634     }
 635
 636     if (cpu->reset_hivecs) {
 637             cpu->reset_sctlr |= (1 << 13);
 638     }
 639
 640     if (!cpu->has_el3) {
 641         /* If the has_el3 CPU property is disabled then we need to disable the
 642          * feature.
 643          */
 644         unset_feature(env, ARM_FEATURE_EL3);
 645
 646         /* Disable the security extension feature bits in the processor feature
 647          * registers as well. These are id_pfr1[7:4] and id_aa64pfr0[15:12].
 648          */
 649         cpu->id_pfr1 &= ~0xf0;
 650         cpu->id_aa64pfr0 &= ~0xf000;
 651     }
 652
 653     if (!arm_feature(env, ARM_FEATURE_EL2)) {
 654         /* Disable the hypervisor feature bits in the processor feature
 655          * registers if we don't have EL2. These are id_pfr1[15:12] and
 656          * id_aa64pfr0_el1[11:8].
 657          */
 658         cpu->id_aa64pfr0 &= ~0xf00;
 659         cpu->id_pfr1 &= ~0xf000;
 660     }
 661
 662     if (!cpu->has_mpu) {
 663         unset_feature(env, ARM_FEATURE_MPU);
 664     }
 665
 666     if (arm_feature(env, ARM_FEATURE_MPU) &&
 667         arm_feature(env, ARM_FEATURE_V7)) {
 668         uint32_t nr = cpu->pmsav7_dregion;
 669
 670         if (nr > 0xff) {
 671             error_setg(errp, "PMSAv7 MPU #regions invalid %" PRIu32, nr);
 672             return;
 673         }
 674
 675         if (nr) {
 676             env->pmsav7.drbar = g_new0(uint32_t, nr);
 677             env->pmsav7.drsr = g_new0(uint32_t, nr);
 678             env->pmsav7.dracr = g_new0(uint32_t, nr);
 679         }
 680     }
 681
 682     register_cp_regs_for_features(cpu);
 683     arm_cpu_register_gdb_regs_for_features(cpu);
 684
 685     init_cpreg_list(cpu);
 686
 687 #ifndef CONFIG_USER_ONLY
 688     if (cpu->has_el3) {
 689         cs->num_ases = 2;
 690     } else {
 691         cs->num_ases = 1;
 692     }
 693
 694     if (cpu->has_el3) {
 695         AddressSpace *as;
 696
 697         if (!cpu->secure_memory) {
 698             cpu->secure_memory = cs->memory;
 699         }
 700         as = address_space_init_shareable(cpu->secure_memory,
 701                                           "cpu-secure-memory");
 702         cpu_address_space_init(cs, as, ARMASIdx_S);
 703     }
 704     cpu_address_space_init(cs,
 705                            address_space_init_shareable(cs->memory,
 706                                                         "cpu-memory"),
 707                            ARMASIdx_NS);
 708 #endif
 709
 710     qemu_init_vcpu(cs);
 711     cpu_reset(cs);
 712
 713     acc->parent_realize(dev, errp);
 714 }
 715
 716 static ObjectClass *arm_cpu_class_by_name(const char *cpu_model)
 717 {
 718     ObjectClass *oc;
 719     char *typename;
 720     char **cpuname;
 721
 722     if (!cpu_model) {
 723         return NULL;
 724     }
 725
 726     cpuname = g_strsplit(cpu_model, ",", 1);
 727     typename = g_strdup_printf("%s-" TYPE_ARM_CPU, cpuname[0]);
 728     oc = object_class_by_name(typename);
 729     g_strfreev(cpuname);
 730     g_free(typename);
 731     if (!oc || !object_class_dynamic_cast(oc, TYPE_ARM_CPU) ||
 732         object_class_is_abstract(oc)) {
 733         return NULL;
 734     }
 735     return oc;
 736 }
 737
 738 /* CPU models. These are not needed for the AArch64 linux-user build. */
 739 #if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)
 740
 741 static void arm926_initfn(Object *obj)
 742 {
 743     ARMCPU *cpu = ARM_CPU(obj);
 744
 745     cpu->dtb_compatible = "arm,arm926";
 746     set_feature(&cpu->env, ARM_FEATURE_V5);
 747     set_feature(&cpu->env, ARM_FEATURE_VFP);
 748     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 749     set_feature(&cpu->env, ARM_FEATURE_CACHE_TEST_CLEAN);
 750     cpu->midr = 0x41069265;
 751     cpu->reset_fpsid = 0x41011090;
 752     cpu->ctr = 0x1dd20d2;
 753     cpu->reset_sctlr = 0x00090078;
 754 }
 755
 756 static void arm946_initfn(Object *obj)
 757 {
 758     ARMCPU *cpu = ARM_CPU(obj);
 759
 760     cpu->dtb_compatible = "arm,arm946";
 761     set_feature(&cpu->env, ARM_FEATURE_V5);
 762     set_feature(&cpu->env, ARM_FEATURE_MPU);
 763     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 764     cpu->midr = 0x41059461;
 765     cpu->ctr = 0x0f004006;
 766     cpu->reset_sctlr = 0x00000078;
 767 }
 768
 769 static void arm1026_initfn(Object *obj)
 770 {
 771     ARMCPU *cpu = ARM_CPU(obj);
 772
 773     cpu->dtb_compatible = "arm,arm1026";
 774     set_feature(&cpu->env, ARM_FEATURE_V5);
 775     set_feature(&cpu->env, ARM_FEATURE_VFP);
 776     set_feature(&cpu->env, ARM_FEATURE_AUXCR);
 777     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 778     set_feature(&cpu->env, ARM_FEATURE_CACHE_TEST_CLEAN);
 779     cpu->midr = 0x4106a262;
 780     cpu->reset_fpsid = 0x410110a0;
 781     cpu->ctr = 0x1dd20d2;
 782     cpu->reset_sctlr = 0x00090078;
 783     cpu->reset_auxcr = 1;
 784     {
 785         /* The 1026 had an IFAR at c6,c0,0,1 rather than the ARMv6 c6,c0,0,2 */
 786         ARMCPRegInfo ifar = {
 787             .name = "IFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 1,
 788             .access = PL1_RW,
 789             .fieldoffset = offsetof(CPUARMState, cp15.ifar_ns),
 790             .resetvalue = 0
 791         };
 792         define_one_arm_cp_reg(cpu, &ifar);
 793     }
 794 }
 795
 796 static void arm1136_r2_initfn(Object *obj)
 797 {
 798     ARMCPU *cpu = ARM_CPU(obj);
 799     /* What qemu calls "arm1136_r2" is actually the 1136 r0p2, ie an
 800      * older core than plain "arm1136". In particular this does not
 801      * have the v6K features.
 802      * These ID register values are correct for 1136 but may be wrong
 803      * for 1136_r2 (in particular r0p2 does not actually implement most
 804      * of the ID registers).
 805      */
 806
 807     cpu->dtb_compatible = "arm,arm1136";
 808     set_feature(&cpu->env, ARM_FEATURE_V6);
 809     set_feature(&cpu->env, ARM_FEATURE_VFP);
 810     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 811     set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
 812     set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
 813     cpu->midr = 0x4107b362;
 814     cpu->reset_fpsid = 0x410120b4;
 815     cpu->mvfr0 = 0x11111111;
 816     cpu->mvfr1 = 0x00000000;
 817     cpu->ctr = 0x1dd20d2;
 818     cpu->reset_sctlr = 0x00050078;
 819     cpu->id_pfr0 = 0x111;
 820     cpu->id_pfr1 = 0x1;
 821     cpu->id_dfr0 = 0x2;
 822     cpu->id_afr0 = 0x3;
 823     cpu->id_mmfr0 = 0x01130003;
 824     cpu->id_mmfr1 = 0x10030302;
 825     cpu->id_mmfr2 = 0x01222110;
 826     cpu->id_isar0 = 0x00140011;
 827     cpu->id_isar1 = 0x12002111;
 828     cpu->id_isar2 = 0x11231111;
 829     cpu->id_isar3 = 0x01102131;
 830     cpu->id_isar4 = 0x141;
 831     cpu->reset_auxcr = 7;
 832 }
 833
 834 static void arm1136_initfn(Object *obj)
 835 {
 836     ARMCPU *cpu = ARM_CPU(obj);
 837
 838     cpu->dtb_compatible = "arm,arm1136";
 839     set_feature(&cpu->env, ARM_FEATURE_V6K);
 840     set_feature(&cpu->env, ARM_FEATURE_V6);
 841     set_feature(&cpu->env, ARM_FEATURE_VFP);
 842     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 843     set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
 844     set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
 845     cpu->midr = 0x4117b363;
 846     cpu->reset_fpsid = 0x410120b4;
 847     cpu->mvfr0 = 0x11111111;
 848     cpu->mvfr1 = 0x00000000;
 849     cpu->ctr = 0x1dd20d2;
 850     cpu->reset_sctlr = 0x00050078;
 851     cpu->id_pfr0 = 0x111;
 852     cpu->id_pfr1 = 0x1;
 853     cpu->id_dfr0 = 0x2;
 854     cpu->id_afr0 = 0x3;
 855     cpu->id_mmfr0 = 0x01130003;
 856     cpu->id_mmfr1 = 0x10030302;
 857     cpu->id_mmfr2 = 0x01222110;
 858     cpu->id_isar0 = 0x00140011;
 859     cpu->id_isar1 = 0x12002111;
 860     cpu->id_isar2 = 0x11231111;
 861     cpu->id_isar3 = 0x01102131;
 862     cpu->id_isar4 = 0x141;
 863     cpu->reset_auxcr = 7;
 864 }
 865
 866 static void arm1176_initfn(Object *obj)
 867 {
 868     ARMCPU *cpu = ARM_CPU(obj);
 869
 870     cpu->dtb_compatible = "arm,arm1176";
 871     set_feature(&cpu->env, ARM_FEATURE_V6K);
 872     set_feature(&cpu->env, ARM_FEATURE_VFP);
 873     set_feature(&cpu->env, ARM_FEATURE_VAPA);
 874     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 875     set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
 876     set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
 877     set_feature(&cpu->env, ARM_FEATURE_EL3);
 878     cpu->midr = 0x410fb767;
 879     cpu->reset_fpsid = 0x410120b5;
 880     cpu->mvfr0 = 0x11111111;
 881     cpu->mvfr1 = 0x00000000;
 882     cpu->ctr = 0x1dd20d2;
 883     cpu->reset_sctlr = 0x00050078;
 884     cpu->id_pfr0 = 0x111;
 885     cpu->id_pfr1 = 0x11;
 886     cpu->id_dfr0 = 0x33;
 887     cpu->id_afr0 = 0;
 888     cpu->id_mmfr0 = 0x01130003;
 889     cpu->id_mmfr1 = 0x10030302;
 890     cpu->id_mmfr2 = 0x01222100;
 891     cpu->id_isar0 = 0x0140011;
 892     cpu->id_isar1 = 0x12002111;
 893     cpu->id_isar2 = 0x11231121;
 894     cpu->id_isar3 = 0x01102131;
 895     cpu->id_isar4 = 0x01141;
 896     cpu->reset_auxcr = 7;
 897 }
 898
 899 static void arm11mpcore_initfn(Object *obj)
 900 {
 901     ARMCPU *cpu = ARM_CPU(obj);
 902
 903     cpu->dtb_compatible = "arm,arm11mpcore";
 904     set_feature(&cpu->env, ARM_FEATURE_V6K);
 905     set_feature(&cpu->env, ARM_FEATURE_VFP);
 906     set_feature(&cpu->env, ARM_FEATURE_VAPA);
 907     set_feature(&cpu->env, ARM_FEATURE_MPIDR);
 908     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
 909     cpu->midr = 0x410fb022;
 910     cpu->reset_fpsid = 0x410120b4;
 911     cpu->mvfr0 = 0x11111111;
 912     cpu->mvfr1 = 0x00000000;
 913     cpu->ctr = 0x1d192992; /* 32K icache 32K dcache */
 914     cpu->id_pfr0 = 0x111;
 915     cpu->id_pfr1 = 0x1;
 916     cpu->id_dfr0 = 0;
 917     cpu->id_afr0 = 0x2;
 918     cpu->id_mmfr0 = 0x01100103;
 919     cpu->id_mmfr1 = 0x10020302;
 920     cpu->id_mmfr2 = 0x01222000;
 921     cpu->id_isar0 = 0x00100011;
 922     cpu->id_isar1 = 0x12002111;
 923     cpu->id_isar2 = 0x11221011;
 924     cpu->id_isar3 = 0x01102131;
 925     cpu->id_isar4 = 0x141;
 926     cpu->reset_auxcr = 1;
 927 }
 928
 929 static void cortex_m3_initfn(Object *obj)
 930 {
 931     ARMCPU *cpu = ARM_CPU(obj);
 932     set_feature(&cpu->env, ARM_FEATURE_V7);
 933     set_feature(&cpu->env, ARM_FEATURE_M);
 934     cpu->midr = 0x410fc231;
 935 }
 936
 937 static void cortex_m4_initfn(Object *obj)
 938 {
 939     ARMCPU *cpu = ARM_CPU(obj);
 940
 941     set_feature(&cpu->env, ARM_FEATURE_V7);
 942     set_feature(&cpu->env, ARM_FEATURE_M);
 943     set_feature(&cpu->env, ARM_FEATURE_THUMB_DSP);
 944     cpu->midr = 0x410fc240; /* r0p0 */
 945 }
 946 static void arm_v7m_class_init(ObjectClass *oc, void *data)
 947 {
 948     CPUClass *cc = CPU_CLASS(oc);
 949
 950 #ifndef CONFIG_USER_ONLY
 951     cc->do_interrupt = arm_v7m_cpu_do_interrupt;
 952 #endif
 953
 954     cc->cpu_exec_interrupt = arm_v7m_cpu_exec_interrupt;
 955 }
 956
 957 static const ARMCPRegInfo cortexr5_cp_reginfo[] = {
 958     /* Dummy the TCM region regs for the moment */
 959     { .name = "ATCM", .cp = 15, .opc1 = 0, .crn = 9, .crm = 1, .opc2 = 0,
 960       .access = PL1_RW, .type = ARM_CP_CONST },
 961     { .name = "BTCM", .cp = 15, .opc1 = 0, .crn = 9, .crm = 1, .opc2 = 1,
 962       .access = PL1_RW, .type = ARM_CP_CONST },
 963     REGINFO_SENTINEL
 964 };
 965
 966 static void cortex_r5_initfn(Object *obj)
 967 {
 968     ARMCPU *cpu = ARM_CPU(obj);
 969
 970     set_feature(&cpu->env, ARM_FEATURE_V7);
 971     set_feature(&cpu->env, ARM_FEATURE_THUMB_DIV);
 972     set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);
 973     set_feature(&cpu->env, ARM_FEATURE_V7MP);
 974     set_feature(&cpu->env, ARM_FEATURE_MPU);
 975     cpu->midr = 0x411fc153; /* r1p3 */
 976     cpu->id_pfr0 = 0x0131;
 977     cpu->id_pfr1 = 0x001;
 978     cpu->id_dfr0 = 0x010400;
 979     cpu->id_afr0 = 0x0;
 980     cpu->id_mmfr0 = 0x0210030;
 981     cpu->id_mmfr1 = 0x00000000;
 982     cpu->id_mmfr2 = 0x01200000;
 983     cpu->id_mmfr3 = 0x0211;
 984     cpu->id_isar0 = 0x2101111;
 985     cpu->id_isar1 = 0x13112111;
 986     cpu->id_isar2 = 0x21232141;
 987     cpu->id_isar3 = 0x01112131;
 988     cpu->id_isar4 = 0x0010142;
 989     cpu->id_isar5 = 0x0;
 990     cpu->mp_is_up = true;
 991     define_arm_cp_regs(cpu, cortexr5_cp_reginfo);
 992 }
 993
 994 static const ARMCPRegInfo cortexa8_cp_reginfo[] = {
 995     { .name = "L2LOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 0,
 996       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
 997     { .name = "L2AUXCR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 2,
 998       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
 999     REGINFO_SENTINEL
1000 };
1001
1002 static void cortex_a8_initfn(Object *obj)
1003 {
1004     ARMCPU *cpu = ARM_CPU(obj);
1005
1006     cpu->dtb_compatible = "arm,cortex-a8";
1007     set_feature(&cpu->env, ARM_FEATURE_V7);
1008     set_feature(&cpu->env, ARM_FEATURE_VFP3);
1009     set_feature(&cpu->env, ARM_FEATURE_NEON);
1010     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
1011     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
1012     set_feature(&cpu->env, ARM_FEATURE_EL3);
1013     cpu->midr = 0x410fc080;
1014     cpu->reset_fpsid = 0x410330c0;
1015     cpu->mvfr0 = 0x11110222;
1016     cpu->mvfr1 = 0x00011100;
1017     cpu->ctr = 0x82048004;
1018     cpu->reset_sctlr = 0x00c50078;
1019     cpu->id_pfr0 = 0x1031;
1020     cpu->id_pfr1 = 0x11;
1021     cpu->id_dfr0 = 0x400;
1022     cpu->id_afr0 = 0;
1023     cpu->id_mmfr0 = 0x31100003;
1024     cpu->id_mmfr1 = 0x20000000;
1025     cpu->id_mmfr2 = 0x01202000;
1026     cpu->id_mmfr3 = 0x11;
1027     cpu->id_isar0 = 0x00101111;
1028     cpu->id_isar1 = 0x12112111;
1029     cpu->id_isar2 = 0x21232031;
1030     cpu->id_isar3 = 0x11112131;
1031     cpu->id_isar4 = 0x00111142;
1032     cpu->dbgdidr = 0x15141000;
1033     cpu->clidr = (1 << 27) | (2 << 24) | 3;
1034     cpu->ccsidr[0] = 0xe007e01a; /* 16k L1 dcache. */
1035     cpu->ccsidr[1] = 0x2007e01a; /* 16k L1 icache. */
1036     cpu->ccsidr[2] = 0xf0000000; /* No L2 icache. */
1037     cpu->reset_auxcr = 2;
1038     define_arm_cp_regs(cpu, cortexa8_cp_reginfo);
1039 }
1040
1041 static const ARMCPRegInfo cortexa9_cp_reginfo[] = {
1042     /* power_control should be set to maximum latency. Again,
1043      * default to 0 and set by private hook
1044      */
1045     { .name = "A9_PWRCTL", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 0,
1046       .access = PL1_RW, .resetvalue = 0,
1047       .fieldoffset = offsetof(CPUARMState, cp15.c15_power_control) },
1048     { .name = "A9_DIAG", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 1,
1049       .access = PL1_RW, .resetvalue = 0,
1050       .fieldoffset = offsetof(CPUARMState, cp15.c15_diagnostic) },
1051     { .name = "A9_PWRDIAG", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 2,
1052       .access = PL1_RW, .resetvalue = 0,
1053       .fieldoffset = offsetof(CPUARMState, cp15.c15_power_diagnostic) },
1054     { .name = "NEONBUSY", .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0,
1055       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
1056     /* TLB lockdown control */
1057     { .name = "TLB_LOCKR", .cp = 15, .crn = 15, .crm = 4, .opc1 = 5, .opc2 = 2,
1058       .access = PL1_W, .resetvalue = 0, .type = ARM_CP_NOP },
1059     { .name = "TLB_LOCKW", .cp = 15, .crn = 15, .crm = 4, .opc1 = 5, .opc2 = 4,
1060       .access = PL1_W, .resetvalue = 0, .type = ARM_CP_NOP },
1061     { .name = "TLB_VA", .cp = 15, .crn = 15, .crm = 5, .opc1 = 5, .opc2 = 2,
1062       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
1063     { .name = "TLB_PA", .cp = 15, .crn = 15, .crm = 6, .opc1 = 5, .opc2 = 2,
1064       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
1065     { .name = "TLB_ATTR", .cp = 15, .crn = 15, .crm = 7, .opc1 = 5, .opc2 = 2,
1066       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
1067     REGINFO_SENTINEL
1068 };
1069
1070 static void cortex_a9_initfn(Object *obj)
1071 {
1072     ARMCPU *cpu = ARM_CPU(obj);
1073
1074     cpu->dtb_compatible = "arm,cortex-a9";
1075     set_feature(&cpu->env, ARM_FEATURE_V7);
1076     set_feature(&cpu->env, ARM_FEATURE_VFP3);
1077     set_feature(&cpu->env, ARM_FEATURE_VFP_FP16);
1078     set_feature(&cpu->env, ARM_FEATURE_NEON);
1079     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
1080     set_feature(&cpu->env, ARM_FEATURE_EL3);
1081     /* Note that A9 supports the MP extensions even for
1082      * A9UP and single-core A9MP (which are both different
1083      * and valid configurations; we don't model A9UP).
1084      */
1085     set_feature(&cpu->env, ARM_FEATURE_V7MP);
1086     set_feature(&cpu->env, ARM_FEATURE_CBAR);
1087     cpu->midr = 0x410fc090;
1088     cpu->reset_fpsid = 0x41033090;
1089     cpu->mvfr0 = 0x11110222;
1090     cpu->mvfr1 = 0x01111111;
1091     cpu->ctr = 0x80038003;
1092     cpu->reset_sctlr = 0x00c50078;
1093     cpu->id_pfr0 = 0x1031;
1094     cpu->id_pfr1 = 0x11;
1095     cpu->id_dfr0 = 0x000;
1096     cpu->id_afr0 = 0;
1097     cpu->id_mmfr0 = 0x00100103;
1098     cpu->id_mmfr1 = 0x20000000;
1099     cpu->id_mmfr2 = 0x01230000;
1100     cpu->id_mmfr3 = 0x00002111;
1101     cpu->id_isar0 = 0x00101111;
1102     cpu->id_isar1 = 0x13112111;
1103     cpu->id_isar2 = 0x21232041;
1104     cpu->id_isar3 = 0x11112131;
1105     cpu->id_isar4 = 0x00111142;
1106     cpu->dbgdidr = 0x35141000;
1107     cpu->clidr = (1 << 27) | (1 << 24) | 3;
1108     cpu->ccsidr[0] = 0xe00fe019; /* 16k L1 dcache. */
1109     cpu->ccsidr[1] = 0x200fe019; /* 16k L1 icache. */
1110     define_arm_cp_regs(cpu, cortexa9_cp_reginfo);
1111 }
1112
1113 #ifndef CONFIG_USER_ONLY
1114 static uint64_t a15_l2ctlr_read(CPUARMState *env, const ARMCPRegInfo *ri)
1115 {
1116     /* Linux wants the number of processors from here.
1117      * Might as well set the interrupt-controller bit too.
1118      */
1119     return ((smp_cpus - 1) << 24) | (1 << 23);
1120 }
1121 #endif
1122
1123 static const ARMCPRegInfo cortexa15_cp_reginfo[] = {
1124 #ifndef CONFIG_USER_ONLY
1125     { .name = "L2CTLR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 2,
1126       .access = PL1_RW, .resetvalue = 0, .readfn = a15_l2ctlr_read,
1127       .writefn = arm_cp_write_ignore, },
1128 #endif
1129     { .name = "L2ECTLR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 3,
1130       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
1131     REGINFO_SENTINEL
1132 };
1133
1134 static void cortex_a15_initfn(Object *obj)
1135 {
1136     ARMCPU *cpu = ARM_CPU(obj);
1137
1138     cpu->dtb_compatible = "arm,cortex-a15";
1139     set_feature(&cpu->env, ARM_FEATURE_V7);
1140     set_feature(&cpu->env, ARM_FEATURE_VFP4);
1141     set_feature(&cpu->env, ARM_FEATURE_NEON);
1142     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
1143     set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);
1144     set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER);
1145     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
1146     set_feature(&cpu->env, ARM_FEATURE_CBAR_RO);
1147     set_feature(&cpu->env, ARM_FEATURE_LPAE);
1148     set_feature(&cpu->env, ARM_FEATURE_EL3);
1149     cpu->kvm_target = QEMU_KVM_ARM_TARGET_CORTEX_A15;
1150     cpu->midr = 0x412fc0f1;
1151     cpu->reset_fpsid = 0x410430f0;
1152     cpu->mvfr0 = 0x10110222;
1153     cpu->mvfr1 = 0x11111111;
1154     cpu->ctr = 0x8444c004;
1155     cpu->reset_sctlr = 0x00c50078;
1156     cpu->id_pfr0 = 0x00001131;
1157     cpu->id_pfr1 = 0x00011011;
1158     cpu->id_dfr0 = 0x02010555;
1159     cpu->pmceid0 = 0x0000000;
1160     cpu->pmceid1 = 0x00000000;
1161     cpu->id_afr0 = 0x00000000;
1162     cpu->id_mmfr0 = 0x10201105;
1163     cpu->id_mmfr1 = 0x20000000;
1164     cpu->id_mmfr2 = 0x01240000;
1165     cpu->id_mmfr3 = 0x02102211;
1166     cpu->id_isar0 = 0x02101110;
1167     cpu->id_isar1 = 0x13112111;
1168     cpu->id_isar2 = 0x21232041;
1169     cpu->id_isar3 = 0x11112131;
1170     cpu->id_isar4 = 0x10011142;
1171     cpu->dbgdidr = 0x3515f021;
1172     cpu->clidr = 0x0a200023;
1173     cpu->ccsidr[0] = 0x701fe00a; /* 32K L1 dcache */
1174     cpu->ccsidr[1] = 0x201fe00a; /* 32K L1 icache */
1175     cpu->ccsidr[2] = 0x711fe07a; /* 4096K L2 unified cache */
1176     define_arm_cp_regs(cpu, cortexa15_cp_reginfo);
1177 }
1178
1179 static void ti925t_initfn(Object *obj)
1180 {
1181     ARMCPU *cpu = ARM_CPU(obj);
1182     set_feature(&cpu->env, ARM_FEATURE_V4T);
1183     set_feature(&cpu->env, ARM_FEATURE_OMAPCP);
1184     cpu->midr = ARM_CPUID_TI925T;
1185     cpu->ctr = 0x5109149;
1186     cpu->reset_sctlr = 0x00000070;
1187 }
1188
1189 static void sa1100_initfn(Object *obj)
1190 {
1191     ARMCPU *cpu = ARM_CPU(obj);
1192
1193     cpu->dtb_compatible = "intel,sa1100";
1194     set_feature(&cpu->env, ARM_FEATURE_STRONGARM);
1195     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
1196     cpu->midr = 0x4401A11B;
1197     cpu->reset_sctlr = 0x00000070;
1198 }
1199
1200 static void sa1110_initfn(Object *obj)
1201 {
1202     ARMCPU *cpu = ARM_CPU(obj);
1203     set_feature(&cpu->env, ARM_FEATURE_STRONGARM);
1204     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
1205     cpu->midr = 0x6901B119;
1206     cpu->reset_sctlr = 0x00000070;
1207 }
1208
1209 static void pxa250_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 = 0x69052100;
1217     cpu->ctr = 0xd172172;
1218     cpu->reset_sctlr = 0x00000078;
1219 }
1220
1221 static void pxa255_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 = 0x69052d00;
1229     cpu->ctr = 0xd172172;
1230     cpu->reset_sctlr = 0x00000078;
1231 }
1232
1233 static void pxa260_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 = 0x69052903;
1241     cpu->ctr = 0xd172172;
1242     cpu->reset_sctlr = 0x00000078;
1243 }
1244
1245 static void pxa261_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 = 0x69052d05;
1253     cpu->ctr = 0xd172172;
1254     cpu->reset_sctlr = 0x00000078;
1255 }
1256
1257 static void pxa262_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     cpu->midr = 0x69052d06;
1265     cpu->ctr = 0xd172172;
1266     cpu->reset_sctlr = 0x00000078;
1267 }
1268
1269 static void pxa270a0_initfn(Object *obj)
1270 {
1271     ARMCPU *cpu = ARM_CPU(obj);
1272
1273     cpu->dtb_compatible = "marvell,xscale";
1274     set_feature(&cpu->env, ARM_FEATURE_V5);
1275     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1276     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1277     cpu->midr = 0x69054110;
1278     cpu->ctr = 0xd172172;
1279     cpu->reset_sctlr = 0x00000078;
1280 }
1281
1282 static void pxa270a1_initfn(Object *obj)
1283 {
1284     ARMCPU *cpu = ARM_CPU(obj);
1285
1286     cpu->dtb_compatible = "marvell,xscale";
1287     set_feature(&cpu->env, ARM_FEATURE_V5);
1288     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1289     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1290     cpu->midr = 0x69054111;
1291     cpu->ctr = 0xd172172;
1292     cpu->reset_sctlr = 0x00000078;
1293 }
1294
1295 static void pxa270b0_initfn(Object *obj)
1296 {
1297     ARMCPU *cpu = ARM_CPU(obj);
1298
1299     cpu->dtb_compatible = "marvell,xscale";
1300     set_feature(&cpu->env, ARM_FEATURE_V5);
1301     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1302     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1303     cpu->midr = 0x69054112;
1304     cpu->ctr = 0xd172172;
1305     cpu->reset_sctlr = 0x00000078;
1306 }
1307
1308 static void pxa270b1_initfn(Object *obj)
1309 {
1310     ARMCPU *cpu = ARM_CPU(obj);
1311
1312     cpu->dtb_compatible = "marvell,xscale";
1313     set_feature(&cpu->env, ARM_FEATURE_V5);
1314     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1315     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1316     cpu->midr = 0x69054113;
1317     cpu->ctr = 0xd172172;
1318     cpu->reset_sctlr = 0x00000078;
1319 }
1320
1321 static void pxa270c0_initfn(Object *obj)
1322 {
1323     ARMCPU *cpu = ARM_CPU(obj);
1324
1325     cpu->dtb_compatible = "marvell,xscale";
1326     set_feature(&cpu->env, ARM_FEATURE_V5);
1327     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1328     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1329     cpu->midr = 0x69054114;
1330     cpu->ctr = 0xd172172;
1331     cpu->reset_sctlr = 0x00000078;
1332 }
1333
1334 static void pxa270c5_initfn(Object *obj)
1335 {
1336     ARMCPU *cpu = ARM_CPU(obj);
1337
1338     cpu->dtb_compatible = "marvell,xscale";
1339     set_feature(&cpu->env, ARM_FEATURE_V5);
1340     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
1341     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
1342     cpu->midr = 0x69054117;
1343     cpu->ctr = 0xd172172;
1344     cpu->reset_sctlr = 0x00000078;
1345 }
1346
1347 #ifdef CONFIG_USER_ONLY
1348 static void arm_any_initfn(Object *obj)
1349 {
1350     ARMCPU *cpu = ARM_CPU(obj);
1351     set_feature(&cpu->env, ARM_FEATURE_V8);
1352     set_feature(&cpu->env, ARM_FEATURE_VFP4);
1353     set_feature(&cpu->env, ARM_FEATURE_NEON);
1354     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
1355     set_feature(&cpu->env, ARM_FEATURE_V8_AES);
1356     set_feature(&cpu->env, ARM_FEATURE_V8_SHA1);
1357     set_feature(&cpu->env, ARM_FEATURE_V8_SHA256);
1358     set_feature(&cpu->env, ARM_FEATURE_V8_PMULL);
1359     set_feature(&cpu->env, ARM_FEATURE_CRC);
1360     cpu->midr = 0xffffffff;
1361 }
1362 #endif
1363
1364 #endif /* !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64) */
1365
1366 typedef struct ARMCPUInfo {
1367     const char *name;
1368     void (*initfn)(Object *obj);
1369     void (*class_init)(ObjectClass *oc, void *data);
1370 } ARMCPUInfo;
1371
1372 static const ARMCPUInfo arm_cpus[] = {
1373 #if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)
1374     { .name = "arm926",      .initfn = arm926_initfn },
1375     { .name = "arm946",      .initfn = arm946_initfn },
1376     { .name = "arm1026",     .initfn = arm1026_initfn },
1377     /* What QEMU calls "arm1136-r2" is actually the 1136 r0p2, i.e. an
1378      * older core than plain "arm1136". In particular this does not
1379      * have the v6K features.
1380      */
1381     { .name = "arm1136-r2",  .initfn = arm1136_r2_initfn },
1382     { .name = "arm1136",     .initfn = arm1136_initfn },
1383     { .name = "arm1176",     .initfn = arm1176_initfn },
1384     { .name = "arm11mpcore", .initfn = arm11mpcore_initfn },
1385     { .name = "cortex-m3",   .initfn = cortex_m3_initfn,
1386                              .class_init = arm_v7m_class_init },
1387     { .name = "cortex-m4",   .initfn = cortex_m4_initfn,
1388                              .class_init = arm_v7m_class_init },
1389     { .name = "cortex-r5",   .initfn = cortex_r5_initfn },
1390     { .name = "cortex-a8",   .initfn = cortex_a8_initfn },
1391     { .name = "cortex-a9",   .initfn = cortex_a9_initfn },
1392     { .name = "cortex-a15",  .initfn = cortex_a15_initfn },
1393     { .name = "ti925t",      .initfn = ti925t_initfn },
1394     { .name = "sa1100",      .initfn = sa1100_initfn },
1395     { .name = "sa1110",      .initfn = sa1110_initfn },
1396     { .name = "pxa250",      .initfn = pxa250_initfn },
1397     { .name = "pxa255",      .initfn = pxa255_initfn },
1398     { .name = "pxa260",      .initfn = pxa260_initfn },
1399     { .name = "pxa261",      .initfn = pxa261_initfn },
1400     { .name = "pxa262",      .initfn = pxa262_initfn },
1401     /* "pxa270" is an alias for "pxa270-a0" */
1402     { .name = "pxa270",      .initfn = pxa270a0_initfn },
1403     { .name = "pxa270-a0",   .initfn = pxa270a0_initfn },
1404     { .name = "pxa270-a1",   .initfn = pxa270a1_initfn },
1405     { .name = "pxa270-b0",   .initfn = pxa270b0_initfn },
1406     { .name = "pxa270-b1",   .initfn = pxa270b1_initfn },
1407     { .name = "pxa270-c0",   .initfn = pxa270c0_initfn },
1408     { .name = "pxa270-c5",   .initfn = pxa270c5_initfn },
1409 #ifdef CONFIG_USER_ONLY
1410     { .name = "any",         .initfn = arm_any_initfn },
1411 #endif
1412 #endif
1413     { .name = NULL }
1414 };
1415
1416 static Property arm_cpu_properties[] = {
1417     DEFINE_PROP_BOOL("start-powered-off", ARMCPU, start_powered_off, false),
1418     DEFINE_PROP_UINT32("psci-conduit", ARMCPU, psci_conduit, 0),
1419     DEFINE_PROP_UINT32("midr", ARMCPU, midr, 0),
1420     DEFINE_PROP_END_OF_LIST()
1421 };
1422
1423 #ifdef CONFIG_USER_ONLY
1424 static int arm_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
1425                                     int mmu_idx)
1426 {
1427     ARMCPU *cpu = ARM_CPU(cs);
1428     CPUARMState *env = &cpu->env;
1429
1430     env->exception.vaddress = address;
1431     if (rw == 2) {
1432         cs->exception_index = EXCP_PREFETCH_ABORT;
1433     } else {
1434         cs->exception_index = EXCP_DATA_ABORT;
1435     }
1436     return 1;
1437 }
1438 #endif
1439
1440 static gchar *arm_gdb_arch_name(CPUState *cs)
1441 {
1442     ARMCPU *cpu = ARM_CPU(cs);
1443     CPUARMState *env = &cpu->env;
1444
1445     if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
1446         return g_strdup("iwmmxt");
1447     }
1448     return g_strdup("arm");
1449 }
1450
1451 static void arm_cpu_class_init(ObjectClass *oc, void *data)
1452 {
1453     ARMCPUClass *acc = ARM_CPU_CLASS(oc);
1454     CPUClass *cc = CPU_CLASS(acc);
1455     DeviceClass *dc = DEVICE_CLASS(oc);
1456
1457     acc->parent_realize = dc->realize;
1458     dc->realize = arm_cpu_realizefn;
1459     dc->props = arm_cpu_properties;
1460
1461     acc->parent_reset = cc->reset;
1462     cc->reset = arm_cpu_reset;
1463
1464     cc->class_by_name = arm_cpu_class_by_name;
1465     cc->has_work = arm_cpu_has_work;
1466     cc->cpu_exec_interrupt = arm_cpu_exec_interrupt;
1467     cc->dump_state = arm_cpu_dump_state;
1468     cc->set_pc = arm_cpu_set_pc;
1469     cc->gdb_read_register = arm_cpu_gdb_read_register;
1470     cc->gdb_write_register = arm_cpu_gdb_write_register;
1471 #ifdef CONFIG_USER_ONLY
1472     cc->handle_mmu_fault = arm_cpu_handle_mmu_fault;
1473 #else
1474     cc->do_interrupt = arm_cpu_do_interrupt;
1475     cc->do_unaligned_access = arm_cpu_do_unaligned_access;
1476     cc->get_phys_page_attrs_debug = arm_cpu_get_phys_page_attrs_debug;
1477     cc->asidx_from_attrs = arm_asidx_from_attrs;
1478     cc->vmsd = &vmstate_arm_cpu;
1479     cc->virtio_is_big_endian = arm_cpu_is_big_endian;
1480     cc->write_elf64_note = arm_cpu_write_elf64_note;
1481     cc->write_elf32_note = arm_cpu_write_elf32_note;
1482 #endif
1483     cc->gdb_num_core_regs = 26;
1484     cc->gdb_core_xml_file = "arm-core.xml";
1485     cc->gdb_arch_name = arm_gdb_arch_name;
1486     cc->gdb_stop_before_watchpoint = true;
1487     cc->debug_excp_handler = arm_debug_excp_handler;
1488     cc->debug_check_watchpoint = arm_debug_check_watchpoint;
1489
1490     cc->disas_set_info = arm_disas_set_info;
1491
1492     /*
1493      * Reason: arm_cpu_initfn() calls cpu_exec_init(), which saves
1494      * the object in cpus -> dangling pointer after final
1495      * object_unref().
1496      *
1497      * Once this is fixed, the devices that create ARM CPUs should be
1498      * updated not to set cannot_destroy_with_object_finalize_yet,
1499      * unless they still screw up something else.
1500      */
1501     dc->cannot_destroy_with_object_finalize_yet = true;
1502 }
1503
1504 static void cpu_register(const ARMCPUInfo *info)
1505 {
1506     TypeInfo type_info = {
1507         .parent = TYPE_ARM_CPU,
1508         .instance_size = sizeof(ARMCPU),
1509         .instance_init = info->initfn,
1510         .class_size = sizeof(ARMCPUClass),
1511         .class_init = info->class_init,
1512     };
1513
1514     type_info.name = g_strdup_printf("%s-" TYPE_ARM_CPU, info->name);
1515     type_register(&type_info);
1516     g_free((void *)type_info.name);
1517 }
1518
1519 static const TypeInfo arm_cpu_type_info = {
1520     .name = TYPE_ARM_CPU,
1521     .parent = TYPE_CPU,
1522     .instance_size = sizeof(ARMCPU),
1523     .instance_init = arm_cpu_initfn,
1524     .instance_post_init = arm_cpu_post_init,
1525     .instance_finalize = arm_cpu_finalizefn,
1526     .abstract = true,
1527     .class_size = sizeof(ARMCPUClass),
1528     .class_init = arm_cpu_class_init,
1529 };
1530
1531 static void arm_cpu_register_types(void)
1532 {
1533     const ARMCPUInfo *info = arm_cpus;
1534
1535     type_register_static(&arm_cpu_type_info);
1536
1537     while (info->name) {
1538         cpu_register(info);
1539         info++;
1540     }
1541 }
1542
1543 type_init(arm_cpu_register_types)