4 * Copyright (c) 2012 SUSE LINUX Products GmbH
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.
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.
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>
21 #include "qemu/osdep.h"
22 #include "qemu/qemu-print.h"
23 #include "qemu-common.h"
24 #include "target/arm/idau.h"
25 #include "qemu/module.h"
26 #include "qapi/error.h"
27 #include "qapi/visitor.h"
30 #include "hw/core/tcg-cpu-ops.h"
31 #endif /* CONFIG_TCG */
32 #include "internals.h"
33 #include "exec/exec-all.h"
34 #include "hw/qdev-properties.h"
35 #if !defined(CONFIG_USER_ONLY)
36 #include "hw/loader.h"
37 #include "hw/boards.h"
39 #include "sysemu/sysemu.h"
40 #include "sysemu/tcg.h"
41 #include "sysemu/hw_accel.h"
43 #include "disas/capstone.h"
44 #include "fpu/softfloat.h"
46 static void arm_cpu_set_pc(CPUState
*cs
, vaddr value
)
48 ARMCPU
*cpu
= ARM_CPU(cs
);
49 CPUARMState
*env
= &cpu
->env
;
55 env
->regs
[15] = value
& ~1;
56 env
->thumb
= value
& 1;
61 void arm_cpu_synchronize_from_tb(CPUState
*cs
,
62 const TranslationBlock
*tb
)
64 ARMCPU
*cpu
= ARM_CPU(cs
);
65 CPUARMState
*env
= &cpu
->env
;
68 * It's OK to look at env for the current mode here, because it's
69 * never possible for an AArch64 TB to chain to an AArch32 TB.
74 env
->regs
[15] = tb
->pc
;
77 #endif /* CONFIG_TCG */
79 static bool arm_cpu_has_work(CPUState
*cs
)
81 ARMCPU
*cpu
= ARM_CPU(cs
);
83 return (cpu
->power_state
!= PSCI_OFF
)
84 && cs
->interrupt_request
&
85 (CPU_INTERRUPT_FIQ
| CPU_INTERRUPT_HARD
86 | CPU_INTERRUPT_VFIQ
| CPU_INTERRUPT_VIRQ
87 | CPU_INTERRUPT_EXITTB
);
90 void arm_register_pre_el_change_hook(ARMCPU
*cpu
, ARMELChangeHookFn
*hook
,
93 ARMELChangeHook
*entry
= g_new0(ARMELChangeHook
, 1);
96 entry
->opaque
= opaque
;
98 QLIST_INSERT_HEAD(&cpu
->pre_el_change_hooks
, entry
, node
);
101 void arm_register_el_change_hook(ARMCPU
*cpu
, ARMELChangeHookFn
*hook
,
104 ARMELChangeHook
*entry
= g_new0(ARMELChangeHook
, 1);
107 entry
->opaque
= opaque
;
109 QLIST_INSERT_HEAD(&cpu
->el_change_hooks
, entry
, node
);
112 static void cp_reg_reset(gpointer key
, gpointer value
, gpointer opaque
)
114 /* Reset a single ARMCPRegInfo register */
115 ARMCPRegInfo
*ri
= value
;
116 ARMCPU
*cpu
= opaque
;
118 if (ri
->type
& (ARM_CP_SPECIAL
| ARM_CP_ALIAS
)) {
123 ri
->resetfn(&cpu
->env
, ri
);
127 /* A zero offset is never possible as it would be regs[0]
128 * so we use it to indicate that reset is being handled elsewhere.
129 * This is basically only used for fields in non-core coprocessors
130 * (like the pxa2xx ones).
132 if (!ri
->fieldoffset
) {
136 if (cpreg_field_is_64bit(ri
)) {
137 CPREG_FIELD64(&cpu
->env
, ri
) = ri
->resetvalue
;
139 CPREG_FIELD32(&cpu
->env
, ri
) = ri
->resetvalue
;
143 static void cp_reg_check_reset(gpointer key
, gpointer value
, gpointer opaque
)
145 /* Purely an assertion check: we've already done reset once,
146 * so now check that running the reset for the cpreg doesn't
147 * change its value. This traps bugs where two different cpregs
148 * both try to reset the same state field but to different values.
150 ARMCPRegInfo
*ri
= value
;
151 ARMCPU
*cpu
= opaque
;
152 uint64_t oldvalue
, newvalue
;
154 if (ri
->type
& (ARM_CP_SPECIAL
| ARM_CP_ALIAS
| ARM_CP_NO_RAW
)) {
158 oldvalue
= read_raw_cp_reg(&cpu
->env
, ri
);
159 cp_reg_reset(key
, value
, opaque
);
160 newvalue
= read_raw_cp_reg(&cpu
->env
, ri
);
161 assert(oldvalue
== newvalue
);
164 static void arm_cpu_reset(DeviceState
*dev
)
166 CPUState
*s
= CPU(dev
);
167 ARMCPU
*cpu
= ARM_CPU(s
);
168 ARMCPUClass
*acc
= ARM_CPU_GET_CLASS(cpu
);
169 CPUARMState
*env
= &cpu
->env
;
171 acc
->parent_reset(dev
);
173 memset(env
, 0, offsetof(CPUARMState
, end_reset_fields
));
175 g_hash_table_foreach(cpu
->cp_regs
, cp_reg_reset
, cpu
);
176 g_hash_table_foreach(cpu
->cp_regs
, cp_reg_check_reset
, cpu
);
178 env
->vfp
.xregs
[ARM_VFP_FPSID
] = cpu
->reset_fpsid
;
179 env
->vfp
.xregs
[ARM_VFP_MVFR0
] = cpu
->isar
.mvfr0
;
180 env
->vfp
.xregs
[ARM_VFP_MVFR1
] = cpu
->isar
.mvfr1
;
181 env
->vfp
.xregs
[ARM_VFP_MVFR2
] = cpu
->isar
.mvfr2
;
183 cpu
->power_state
= s
->start_powered_off
? PSCI_OFF
: PSCI_ON
;
185 if (arm_feature(env
, ARM_FEATURE_IWMMXT
)) {
186 env
->iwmmxt
.cregs
[ARM_IWMMXT_wCID
] = 0x69051000 | 'Q';
189 if (arm_feature(env
, ARM_FEATURE_AARCH64
)) {
190 /* 64 bit CPUs always start in 64 bit mode */
192 #if defined(CONFIG_USER_ONLY)
193 env
->pstate
= PSTATE_MODE_EL0t
;
194 /* Userspace expects access to DC ZVA, CTL_EL0 and the cache ops */
195 env
->cp15
.sctlr_el
[1] |= SCTLR_UCT
| SCTLR_UCI
| SCTLR_DZE
;
196 /* Enable all PAC keys. */
197 env
->cp15
.sctlr_el
[1] |= (SCTLR_EnIA
| SCTLR_EnIB
|
198 SCTLR_EnDA
| SCTLR_EnDB
);
199 /* and to the FP/Neon instructions */
200 env
->cp15
.cpacr_el1
= deposit64(env
->cp15
.cpacr_el1
, 20, 2, 3);
201 /* and to the SVE instructions */
202 env
->cp15
.cpacr_el1
= deposit64(env
->cp15
.cpacr_el1
, 16, 2, 3);
203 /* with reasonable vector length */
204 if (cpu_isar_feature(aa64_sve
, cpu
)) {
205 env
->vfp
.zcr_el
[1] = MIN(cpu
->sve_max_vq
- 1, 3);
208 * Enable TBI0 but not TBI1.
209 * Note that this must match useronly_clean_ptr.
211 env
->cp15
.tcr_el
[1].raw_tcr
= (1ULL << 37);
214 if (cpu_isar_feature(aa64_mte
, cpu
)) {
215 /* Enable tag access, but leave TCF0 as No Effect (0). */
216 env
->cp15
.sctlr_el
[1] |= SCTLR_ATA0
;
218 * Exclude all tags, so that tag 0 is always used.
219 * This corresponds to Linux current->thread.gcr_incl = 0.
221 * Set RRND, so that helper_irg() will generate a seed later.
222 * Here in cpu_reset(), the crypto subsystem has not yet been
225 env
->cp15
.gcr_el1
= 0x1ffff;
228 /* Reset into the highest available EL */
229 if (arm_feature(env
, ARM_FEATURE_EL3
)) {
230 env
->pstate
= PSTATE_MODE_EL3h
;
231 } else if (arm_feature(env
, ARM_FEATURE_EL2
)) {
232 env
->pstate
= PSTATE_MODE_EL2h
;
234 env
->pstate
= PSTATE_MODE_EL1h
;
236 env
->pc
= cpu
->rvbar
;
239 #if defined(CONFIG_USER_ONLY)
240 /* Userspace expects access to cp10 and cp11 for FP/Neon */
241 env
->cp15
.cpacr_el1
= deposit64(env
->cp15
.cpacr_el1
, 20, 4, 0xf);
245 #if defined(CONFIG_USER_ONLY)
246 env
->uncached_cpsr
= ARM_CPU_MODE_USR
;
247 /* For user mode we must enable access to coprocessors */
248 env
->vfp
.xregs
[ARM_VFP_FPEXC
] = 1 << 30;
249 if (arm_feature(env
, ARM_FEATURE_IWMMXT
)) {
250 env
->cp15
.c15_cpar
= 3;
251 } else if (arm_feature(env
, ARM_FEATURE_XSCALE
)) {
252 env
->cp15
.c15_cpar
= 1;
257 * If the highest available EL is EL2, AArch32 will start in Hyp
258 * mode; otherwise it starts in SVC. Note that if we start in
259 * AArch64 then these values in the uncached_cpsr will be ignored.
261 if (arm_feature(env
, ARM_FEATURE_EL2
) &&
262 !arm_feature(env
, ARM_FEATURE_EL3
)) {
263 env
->uncached_cpsr
= ARM_CPU_MODE_HYP
;
265 env
->uncached_cpsr
= ARM_CPU_MODE_SVC
;
267 env
->daif
= PSTATE_D
| PSTATE_A
| PSTATE_I
| PSTATE_F
;
269 if (arm_feature(env
, ARM_FEATURE_M
)) {
270 uint32_t initial_msp
; /* Loaded from 0x0 */
271 uint32_t initial_pc
; /* Loaded from 0x4 */
275 if (cpu_isar_feature(aa32_lob
, cpu
)) {
277 * LTPSIZE is constant 4 if MVE not implemented, and resets
278 * to an UNKNOWN value if MVE is implemented. We choose to
281 env
->v7m
.ltpsize
= 4;
282 /* The LTPSIZE field in FPDSCR is constant and reads as 4. */
283 env
->v7m
.fpdscr
[M_REG_NS
] = 4 << FPCR_LTPSIZE_SHIFT
;
284 env
->v7m
.fpdscr
[M_REG_S
] = 4 << FPCR_LTPSIZE_SHIFT
;
287 if (arm_feature(env
, ARM_FEATURE_M_SECURITY
)) {
288 env
->v7m
.secure
= true;
290 /* This bit resets to 0 if security is supported, but 1 if
291 * it is not. The bit is not present in v7M, but we set it
292 * here so we can avoid having to make checks on it conditional
293 * on ARM_FEATURE_V8 (we don't let the guest see the bit).
295 env
->v7m
.aircr
= R_V7M_AIRCR_BFHFNMINS_MASK
;
297 * Set NSACR to indicate "NS access permitted to everything";
298 * this avoids having to have all the tests of it being
299 * conditional on ARM_FEATURE_M_SECURITY. Note also that from
300 * v8.1M the guest-visible value of NSACR in a CPU without the
301 * Security Extension is 0xcff.
303 env
->v7m
.nsacr
= 0xcff;
306 /* In v7M the reset value of this bit is IMPDEF, but ARM recommends
307 * that it resets to 1, so QEMU always does that rather than making
308 * it dependent on CPU model. In v8M it is RES1.
310 env
->v7m
.ccr
[M_REG_NS
] = R_V7M_CCR_STKALIGN_MASK
;
311 env
->v7m
.ccr
[M_REG_S
] = R_V7M_CCR_STKALIGN_MASK
;
312 if (arm_feature(env
, ARM_FEATURE_V8
)) {
313 /* in v8M the NONBASETHRDENA bit [0] is RES1 */
314 env
->v7m
.ccr
[M_REG_NS
] |= R_V7M_CCR_NONBASETHRDENA_MASK
;
315 env
->v7m
.ccr
[M_REG_S
] |= R_V7M_CCR_NONBASETHRDENA_MASK
;
317 if (!arm_feature(env
, ARM_FEATURE_M_MAIN
)) {
318 env
->v7m
.ccr
[M_REG_NS
] |= R_V7M_CCR_UNALIGN_TRP_MASK
;
319 env
->v7m
.ccr
[M_REG_S
] |= R_V7M_CCR_UNALIGN_TRP_MASK
;
322 if (cpu_isar_feature(aa32_vfp_simd
, cpu
)) {
323 env
->v7m
.fpccr
[M_REG_NS
] = R_V7M_FPCCR_ASPEN_MASK
;
324 env
->v7m
.fpccr
[M_REG_S
] = R_V7M_FPCCR_ASPEN_MASK
|
325 R_V7M_FPCCR_LSPEN_MASK
| R_V7M_FPCCR_S_MASK
;
327 /* Unlike A/R profile, M profile defines the reset LR value */
328 env
->regs
[14] = 0xffffffff;
330 env
->v7m
.vecbase
[M_REG_S
] = cpu
->init_svtor
& 0xffffff80;
332 /* Load the initial SP and PC from offset 0 and 4 in the vector table */
333 vecbase
= env
->v7m
.vecbase
[env
->v7m
.secure
];
334 rom
= rom_ptr_for_as(s
->as
, vecbase
, 8);
336 /* Address zero is covered by ROM which hasn't yet been
337 * copied into physical memory.
339 initial_msp
= ldl_p(rom
);
340 initial_pc
= ldl_p(rom
+ 4);
342 /* Address zero not covered by a ROM blob, or the ROM blob
343 * is in non-modifiable memory and this is a second reset after
344 * it got copied into memory. In the latter case, rom_ptr
345 * will return a NULL pointer and we should use ldl_phys instead.
347 initial_msp
= ldl_phys(s
->as
, vecbase
);
348 initial_pc
= ldl_phys(s
->as
, vecbase
+ 4);
351 env
->regs
[13] = initial_msp
& 0xFFFFFFFC;
352 env
->regs
[15] = initial_pc
& ~1;
353 env
->thumb
= initial_pc
& 1;
356 /* AArch32 has a hard highvec setting of 0xFFFF0000. If we are currently
357 * executing as AArch32 then check if highvecs are enabled and
358 * adjust the PC accordingly.
360 if (A32_BANKED_CURRENT_REG_GET(env
, sctlr
) & SCTLR_V
) {
361 env
->regs
[15] = 0xFFFF0000;
364 /* M profile requires that reset clears the exclusive monitor;
365 * A profile does not, but clearing it makes more sense than having it
366 * set with an exclusive access on address zero.
368 arm_clear_exclusive(env
);
370 env
->vfp
.xregs
[ARM_VFP_FPEXC
] = 0;
373 if (arm_feature(env
, ARM_FEATURE_PMSA
)) {
374 if (cpu
->pmsav7_dregion
> 0) {
375 if (arm_feature(env
, ARM_FEATURE_V8
)) {
376 memset(env
->pmsav8
.rbar
[M_REG_NS
], 0,
377 sizeof(*env
->pmsav8
.rbar
[M_REG_NS
])
378 * cpu
->pmsav7_dregion
);
379 memset(env
->pmsav8
.rlar
[M_REG_NS
], 0,
380 sizeof(*env
->pmsav8
.rlar
[M_REG_NS
])
381 * cpu
->pmsav7_dregion
);
382 if (arm_feature(env
, ARM_FEATURE_M_SECURITY
)) {
383 memset(env
->pmsav8
.rbar
[M_REG_S
], 0,
384 sizeof(*env
->pmsav8
.rbar
[M_REG_S
])
385 * cpu
->pmsav7_dregion
);
386 memset(env
->pmsav8
.rlar
[M_REG_S
], 0,
387 sizeof(*env
->pmsav8
.rlar
[M_REG_S
])
388 * cpu
->pmsav7_dregion
);
390 } else if (arm_feature(env
, ARM_FEATURE_V7
)) {
391 memset(env
->pmsav7
.drbar
, 0,
392 sizeof(*env
->pmsav7
.drbar
) * cpu
->pmsav7_dregion
);
393 memset(env
->pmsav7
.drsr
, 0,
394 sizeof(*env
->pmsav7
.drsr
) * cpu
->pmsav7_dregion
);
395 memset(env
->pmsav7
.dracr
, 0,
396 sizeof(*env
->pmsav7
.dracr
) * cpu
->pmsav7_dregion
);
399 env
->pmsav7
.rnr
[M_REG_NS
] = 0;
400 env
->pmsav7
.rnr
[M_REG_S
] = 0;
401 env
->pmsav8
.mair0
[M_REG_NS
] = 0;
402 env
->pmsav8
.mair0
[M_REG_S
] = 0;
403 env
->pmsav8
.mair1
[M_REG_NS
] = 0;
404 env
->pmsav8
.mair1
[M_REG_S
] = 0;
407 if (arm_feature(env
, ARM_FEATURE_M_SECURITY
)) {
408 if (cpu
->sau_sregion
> 0) {
409 memset(env
->sau
.rbar
, 0, sizeof(*env
->sau
.rbar
) * cpu
->sau_sregion
);
410 memset(env
->sau
.rlar
, 0, sizeof(*env
->sau
.rlar
) * cpu
->sau_sregion
);
413 /* SAU_CTRL reset value is IMPDEF; we choose 0, which is what
414 * the Cortex-M33 does.
419 set_flush_to_zero(1, &env
->vfp
.standard_fp_status
);
420 set_flush_inputs_to_zero(1, &env
->vfp
.standard_fp_status
);
421 set_default_nan_mode(1, &env
->vfp
.standard_fp_status
);
422 set_default_nan_mode(1, &env
->vfp
.standard_fp_status_f16
);
423 set_float_detect_tininess(float_tininess_before_rounding
,
424 &env
->vfp
.fp_status
);
425 set_float_detect_tininess(float_tininess_before_rounding
,
426 &env
->vfp
.standard_fp_status
);
427 set_float_detect_tininess(float_tininess_before_rounding
,
428 &env
->vfp
.fp_status_f16
);
429 set_float_detect_tininess(float_tininess_before_rounding
,
430 &env
->vfp
.standard_fp_status_f16
);
431 #ifndef CONFIG_USER_ONLY
433 kvm_arm_reset_vcpu(cpu
);
437 hw_breakpoint_update_all(cpu
);
438 hw_watchpoint_update_all(cpu
);
439 arm_rebuild_hflags(env
);
442 static inline bool arm_excp_unmasked(CPUState
*cs
, unsigned int excp_idx
,
443 unsigned int target_el
,
444 unsigned int cur_el
, bool secure
,
447 CPUARMState
*env
= cs
->env_ptr
;
448 bool pstate_unmasked
;
449 bool unmasked
= false;
452 * Don't take exceptions if they target a lower EL.
453 * This check should catch any exceptions that would not be taken
456 if (cur_el
> target_el
) {
462 pstate_unmasked
= !(env
->daif
& PSTATE_F
);
466 pstate_unmasked
= !(env
->daif
& PSTATE_I
);
470 if (!(hcr_el2
& HCR_FMO
) || (hcr_el2
& HCR_TGE
)) {
471 /* VFIQs are only taken when hypervized. */
474 return !(env
->daif
& PSTATE_F
);
476 if (!(hcr_el2
& HCR_IMO
) || (hcr_el2
& HCR_TGE
)) {
477 /* VIRQs are only taken when hypervized. */
480 return !(env
->daif
& PSTATE_I
);
482 g_assert_not_reached();
486 * Use the target EL, current execution state and SCR/HCR settings to
487 * determine whether the corresponding CPSR bit is used to mask the
490 if ((target_el
> cur_el
) && (target_el
!= 1)) {
491 /* Exceptions targeting a higher EL may not be maskable */
492 if (arm_feature(env
, ARM_FEATURE_AARCH64
)) {
494 * 64-bit masking rules are simple: exceptions to EL3
495 * can't be masked, and exceptions to EL2 can only be
496 * masked from Secure state. The HCR and SCR settings
497 * don't affect the masking logic, only the interrupt routing.
499 if (target_el
== 3 || !secure
|| (env
->cp15
.scr_el3
& SCR_EEL2
)) {
504 * The old 32-bit-only environment has a more complicated
505 * masking setup. HCR and SCR bits not only affect interrupt
506 * routing but also change the behaviour of masking.
513 * If FIQs are routed to EL3 or EL2 then there are cases where
514 * we override the CPSR.F in determining if the exception is
515 * masked or not. If neither of these are set then we fall back
516 * to the CPSR.F setting otherwise we further assess the state
519 hcr
= hcr_el2
& HCR_FMO
;
520 scr
= (env
->cp15
.scr_el3
& SCR_FIQ
);
523 * When EL3 is 32-bit, the SCR.FW bit controls whether the
524 * CPSR.F bit masks FIQ interrupts when taken in non-secure
525 * state. If SCR.FW is set then FIQs can be masked by CPSR.F
526 * when non-secure but only when FIQs are only routed to EL3.
528 scr
= scr
&& !((env
->cp15
.scr_el3
& SCR_FW
) && !hcr
);
532 * When EL3 execution state is 32-bit, if HCR.IMO is set then
533 * we may override the CPSR.I masking when in non-secure state.
534 * The SCR.IRQ setting has already been taken into consideration
535 * when setting the target EL, so it does not have a further
538 hcr
= hcr_el2
& HCR_IMO
;
542 g_assert_not_reached();
545 if ((scr
|| hcr
) && !secure
) {
552 * The PSTATE bits only mask the interrupt if we have not overriden the
555 return unmasked
|| pstate_unmasked
;
558 bool arm_cpu_exec_interrupt(CPUState
*cs
, int interrupt_request
)
560 CPUClass
*cc
= CPU_GET_CLASS(cs
);
561 CPUARMState
*env
= cs
->env_ptr
;
562 uint32_t cur_el
= arm_current_el(env
);
563 bool secure
= arm_is_secure(env
);
564 uint64_t hcr_el2
= arm_hcr_el2_eff(env
);
568 /* The prioritization of interrupts is IMPLEMENTATION DEFINED. */
570 if (interrupt_request
& CPU_INTERRUPT_FIQ
) {
572 target_el
= arm_phys_excp_target_el(cs
, excp_idx
, cur_el
, secure
);
573 if (arm_excp_unmasked(cs
, excp_idx
, target_el
,
574 cur_el
, secure
, hcr_el2
)) {
578 if (interrupt_request
& CPU_INTERRUPT_HARD
) {
580 target_el
= arm_phys_excp_target_el(cs
, excp_idx
, cur_el
, secure
);
581 if (arm_excp_unmasked(cs
, excp_idx
, target_el
,
582 cur_el
, secure
, hcr_el2
)) {
586 if (interrupt_request
& CPU_INTERRUPT_VIRQ
) {
587 excp_idx
= EXCP_VIRQ
;
589 if (arm_excp_unmasked(cs
, excp_idx
, target_el
,
590 cur_el
, secure
, hcr_el2
)) {
594 if (interrupt_request
& CPU_INTERRUPT_VFIQ
) {
595 excp_idx
= EXCP_VFIQ
;
597 if (arm_excp_unmasked(cs
, excp_idx
, target_el
,
598 cur_el
, secure
, hcr_el2
)) {
605 cs
->exception_index
= excp_idx
;
606 env
->exception
.target_el
= target_el
;
607 cc
->tcg_ops
->do_interrupt(cs
);
611 void arm_cpu_update_virq(ARMCPU
*cpu
)
614 * Update the interrupt level for VIRQ, which is the logical OR of
615 * the HCR_EL2.VI bit and the input line level from the GIC.
617 CPUARMState
*env
= &cpu
->env
;
618 CPUState
*cs
= CPU(cpu
);
620 bool new_state
= (env
->cp15
.hcr_el2
& HCR_VI
) ||
621 (env
->irq_line_state
& CPU_INTERRUPT_VIRQ
);
623 if (new_state
!= ((cs
->interrupt_request
& CPU_INTERRUPT_VIRQ
) != 0)) {
625 cpu_interrupt(cs
, CPU_INTERRUPT_VIRQ
);
627 cpu_reset_interrupt(cs
, CPU_INTERRUPT_VIRQ
);
632 void arm_cpu_update_vfiq(ARMCPU
*cpu
)
635 * Update the interrupt level for VFIQ, which is the logical OR of
636 * the HCR_EL2.VF bit and the input line level from the GIC.
638 CPUARMState
*env
= &cpu
->env
;
639 CPUState
*cs
= CPU(cpu
);
641 bool new_state
= (env
->cp15
.hcr_el2
& HCR_VF
) ||
642 (env
->irq_line_state
& CPU_INTERRUPT_VFIQ
);
644 if (new_state
!= ((cs
->interrupt_request
& CPU_INTERRUPT_VFIQ
) != 0)) {
646 cpu_interrupt(cs
, CPU_INTERRUPT_VFIQ
);
648 cpu_reset_interrupt(cs
, CPU_INTERRUPT_VFIQ
);
653 #ifndef CONFIG_USER_ONLY
654 static void arm_cpu_set_irq(void *opaque
, int irq
, int level
)
656 ARMCPU
*cpu
= opaque
;
657 CPUARMState
*env
= &cpu
->env
;
658 CPUState
*cs
= CPU(cpu
);
659 static const int mask
[] = {
660 [ARM_CPU_IRQ
] = CPU_INTERRUPT_HARD
,
661 [ARM_CPU_FIQ
] = CPU_INTERRUPT_FIQ
,
662 [ARM_CPU_VIRQ
] = CPU_INTERRUPT_VIRQ
,
663 [ARM_CPU_VFIQ
] = CPU_INTERRUPT_VFIQ
667 env
->irq_line_state
|= mask
[irq
];
669 env
->irq_line_state
&= ~mask
[irq
];
674 assert(arm_feature(env
, ARM_FEATURE_EL2
));
675 arm_cpu_update_virq(cpu
);
678 assert(arm_feature(env
, ARM_FEATURE_EL2
));
679 arm_cpu_update_vfiq(cpu
);
684 cpu_interrupt(cs
, mask
[irq
]);
686 cpu_reset_interrupt(cs
, mask
[irq
]);
690 g_assert_not_reached();
694 static void arm_cpu_kvm_set_irq(void *opaque
, int irq
, int level
)
697 ARMCPU
*cpu
= opaque
;
698 CPUARMState
*env
= &cpu
->env
;
699 CPUState
*cs
= CPU(cpu
);
700 uint32_t linestate_bit
;
705 irq_id
= KVM_ARM_IRQ_CPU_IRQ
;
706 linestate_bit
= CPU_INTERRUPT_HARD
;
709 irq_id
= KVM_ARM_IRQ_CPU_FIQ
;
710 linestate_bit
= CPU_INTERRUPT_FIQ
;
713 g_assert_not_reached();
717 env
->irq_line_state
|= linestate_bit
;
719 env
->irq_line_state
&= ~linestate_bit
;
721 kvm_arm_set_irq(cs
->cpu_index
, KVM_ARM_IRQ_TYPE_CPU
, irq_id
, !!level
);
725 static bool arm_cpu_virtio_is_big_endian(CPUState
*cs
)
727 ARMCPU
*cpu
= ARM_CPU(cs
);
728 CPUARMState
*env
= &cpu
->env
;
730 cpu_synchronize_state(cs
);
731 return arm_cpu_data_is_big_endian(env
);
737 print_insn_thumb1(bfd_vma pc
, disassemble_info
*info
)
739 return print_insn_arm(pc
| 1, info
);
742 static void arm_disas_set_info(CPUState
*cpu
, disassemble_info
*info
)
744 ARMCPU
*ac
= ARM_CPU(cpu
);
745 CPUARMState
*env
= &ac
->env
;
749 /* We might not be compiled with the A64 disassembler
750 * because it needs a C++ compiler. Leave print_insn
751 * unset in this case to use the caller default behaviour.
753 #if defined(CONFIG_ARM_A64_DIS)
754 info
->print_insn
= print_insn_arm_a64
;
756 info
->cap_arch
= CS_ARCH_ARM64
;
757 info
->cap_insn_unit
= 4;
758 info
->cap_insn_split
= 4;
762 info
->print_insn
= print_insn_thumb1
;
763 info
->cap_insn_unit
= 2;
764 info
->cap_insn_split
= 4;
765 cap_mode
= CS_MODE_THUMB
;
767 info
->print_insn
= print_insn_arm
;
768 info
->cap_insn_unit
= 4;
769 info
->cap_insn_split
= 4;
770 cap_mode
= CS_MODE_ARM
;
772 if (arm_feature(env
, ARM_FEATURE_V8
)) {
773 cap_mode
|= CS_MODE_V8
;
775 if (arm_feature(env
, ARM_FEATURE_M
)) {
776 cap_mode
|= CS_MODE_MCLASS
;
778 info
->cap_arch
= CS_ARCH_ARM
;
779 info
->cap_mode
= cap_mode
;
782 sctlr_b
= arm_sctlr_b(env
);
783 if (bswap_code(sctlr_b
)) {
784 #ifdef TARGET_WORDS_BIGENDIAN
785 info
->endian
= BFD_ENDIAN_LITTLE
;
787 info
->endian
= BFD_ENDIAN_BIG
;
790 info
->flags
&= ~INSN_ARM_BE32
;
791 #ifndef CONFIG_USER_ONLY
793 info
->flags
|= INSN_ARM_BE32
;
798 #ifdef TARGET_AARCH64
800 static void aarch64_cpu_dump_state(CPUState
*cs
, FILE *f
, int flags
)
802 ARMCPU
*cpu
= ARM_CPU(cs
);
803 CPUARMState
*env
= &cpu
->env
;
804 uint32_t psr
= pstate_read(env
);
806 int el
= arm_current_el(env
);
807 const char *ns_status
;
809 qemu_fprintf(f
, " PC=%016" PRIx64
" ", env
->pc
);
810 for (i
= 0; i
< 32; i
++) {
812 qemu_fprintf(f
, " SP=%016" PRIx64
"\n", env
->xregs
[i
]);
814 qemu_fprintf(f
, "X%02d=%016" PRIx64
"%s", i
, env
->xregs
[i
],
815 (i
+ 2) % 3 ? " " : "\n");
819 if (arm_feature(env
, ARM_FEATURE_EL3
) && el
!= 3) {
820 ns_status
= env
->cp15
.scr_el3
& SCR_NS
? "NS " : "S ";
824 qemu_fprintf(f
, "PSTATE=%08x %c%c%c%c %sEL%d%c",
826 psr
& PSTATE_N
? 'N' : '-',
827 psr
& PSTATE_Z
? 'Z' : '-',
828 psr
& PSTATE_C
? 'C' : '-',
829 psr
& PSTATE_V
? 'V' : '-',
832 psr
& PSTATE_SP
? 'h' : 't');
834 if (cpu_isar_feature(aa64_bti
, cpu
)) {
835 qemu_fprintf(f
, " BTYPE=%d", (psr
& PSTATE_BTYPE
) >> 10);
837 if (!(flags
& CPU_DUMP_FPU
)) {
838 qemu_fprintf(f
, "\n");
841 if (fp_exception_el(env
, el
) != 0) {
842 qemu_fprintf(f
, " FPU disabled\n");
845 qemu_fprintf(f
, " FPCR=%08x FPSR=%08x\n",
846 vfp_get_fpcr(env
), vfp_get_fpsr(env
));
848 if (cpu_isar_feature(aa64_sve
, cpu
) && sve_exception_el(env
, el
) == 0) {
849 int j
, zcr_len
= sve_zcr_len_for_el(env
, el
);
851 for (i
= 0; i
<= FFR_PRED_NUM
; i
++) {
853 if (i
== FFR_PRED_NUM
) {
854 qemu_fprintf(f
, "FFR=");
855 /* It's last, so end the line. */
858 qemu_fprintf(f
, "P%02d=", i
);
871 /* More than one quadword per predicate. */
876 for (j
= zcr_len
/ 4; j
>= 0; j
--) {
878 if (j
* 4 + 4 <= zcr_len
+ 1) {
881 digits
= (zcr_len
% 4 + 1) * 4;
883 qemu_fprintf(f
, "%0*" PRIx64
"%s", digits
,
884 env
->vfp
.pregs
[i
].p
[j
],
885 j
? ":" : eol
? "\n" : " ");
889 for (i
= 0; i
< 32; i
++) {
891 qemu_fprintf(f
, "Z%02d=%016" PRIx64
":%016" PRIx64
"%s",
892 i
, env
->vfp
.zregs
[i
].d
[1],
893 env
->vfp
.zregs
[i
].d
[0], i
& 1 ? "\n" : " ");
894 } else if (zcr_len
== 1) {
895 qemu_fprintf(f
, "Z%02d=%016" PRIx64
":%016" PRIx64
896 ":%016" PRIx64
":%016" PRIx64
"\n",
897 i
, env
->vfp
.zregs
[i
].d
[3], env
->vfp
.zregs
[i
].d
[2],
898 env
->vfp
.zregs
[i
].d
[1], env
->vfp
.zregs
[i
].d
[0]);
900 for (j
= zcr_len
; j
>= 0; j
--) {
901 bool odd
= (zcr_len
- j
) % 2 != 0;
903 qemu_fprintf(f
, "Z%02d[%x-%x]=", i
, j
, j
- 1);
906 qemu_fprintf(f
, " [%x-%x]=", j
, j
- 1);
908 qemu_fprintf(f
, " [%x]=", j
);
911 qemu_fprintf(f
, "%016" PRIx64
":%016" PRIx64
"%s",
912 env
->vfp
.zregs
[i
].d
[j
* 2 + 1],
913 env
->vfp
.zregs
[i
].d
[j
* 2],
914 odd
|| j
== 0 ? "\n" : ":");
919 for (i
= 0; i
< 32; i
++) {
920 uint64_t *q
= aa64_vfp_qreg(env
, i
);
921 qemu_fprintf(f
, "Q%02d=%016" PRIx64
":%016" PRIx64
"%s",
922 i
, q
[1], q
[0], (i
& 1 ? "\n" : " "));
929 static inline void aarch64_cpu_dump_state(CPUState
*cs
, FILE *f
, int flags
)
931 g_assert_not_reached();
936 static void arm_cpu_dump_state(CPUState
*cs
, FILE *f
, int flags
)
938 ARMCPU
*cpu
= ARM_CPU(cs
);
939 CPUARMState
*env
= &cpu
->env
;
943 aarch64_cpu_dump_state(cs
, f
, flags
);
947 for (i
= 0; i
< 16; i
++) {
948 qemu_fprintf(f
, "R%02d=%08x", i
, env
->regs
[i
]);
950 qemu_fprintf(f
, "\n");
952 qemu_fprintf(f
, " ");
956 if (arm_feature(env
, ARM_FEATURE_M
)) {
957 uint32_t xpsr
= xpsr_read(env
);
959 const char *ns_status
= "";
961 if (arm_feature(env
, ARM_FEATURE_M_SECURITY
)) {
962 ns_status
= env
->v7m
.secure
? "S " : "NS ";
965 if (xpsr
& XPSR_EXCP
) {
968 if (env
->v7m
.control
[env
->v7m
.secure
] & R_V7M_CONTROL_NPRIV_MASK
) {
969 mode
= "unpriv-thread";
971 mode
= "priv-thread";
975 qemu_fprintf(f
, "XPSR=%08x %c%c%c%c %c %s%s\n",
977 xpsr
& XPSR_N
? 'N' : '-',
978 xpsr
& XPSR_Z
? 'Z' : '-',
979 xpsr
& XPSR_C
? 'C' : '-',
980 xpsr
& XPSR_V
? 'V' : '-',
981 xpsr
& XPSR_T
? 'T' : 'A',
985 uint32_t psr
= cpsr_read(env
);
986 const char *ns_status
= "";
988 if (arm_feature(env
, ARM_FEATURE_EL3
) &&
989 (psr
& CPSR_M
) != ARM_CPU_MODE_MON
) {
990 ns_status
= env
->cp15
.scr_el3
& SCR_NS
? "NS " : "S ";
993 qemu_fprintf(f
, "PSR=%08x %c%c%c%c %c %s%s%d\n",
995 psr
& CPSR_N
? 'N' : '-',
996 psr
& CPSR_Z
? 'Z' : '-',
997 psr
& CPSR_C
? 'C' : '-',
998 psr
& CPSR_V
? 'V' : '-',
999 psr
& CPSR_T
? 'T' : 'A',
1001 aarch32_mode_name(psr
), (psr
& 0x10) ? 32 : 26);
1004 if (flags
& CPU_DUMP_FPU
) {
1006 if (cpu_isar_feature(aa32_simd_r32
, cpu
)) {
1008 } else if (cpu_isar_feature(aa32_vfp_simd
, cpu
)) {
1011 for (i
= 0; i
< numvfpregs
; i
++) {
1012 uint64_t v
= *aa32_vfp_dreg(env
, i
);
1013 qemu_fprintf(f
, "s%02d=%08x s%02d=%08x d%02d=%016" PRIx64
"\n",
1015 i
* 2 + 1, (uint32_t)(v
>> 32),
1018 qemu_fprintf(f
, "FPSCR: %08x\n", vfp_get_fpscr(env
));
1022 uint64_t arm_cpu_mp_affinity(int idx
, uint8_t clustersz
)
1024 uint32_t Aff1
= idx
/ clustersz
;
1025 uint32_t Aff0
= idx
% clustersz
;
1026 return (Aff1
<< ARM_AFF1_SHIFT
) | Aff0
;
1029 static void cpreg_hashtable_data_destroy(gpointer data
)
1032 * Destroy function for cpu->cp_regs hashtable data entries.
1033 * We must free the name string because it was g_strdup()ed in
1034 * add_cpreg_to_hashtable(). It's OK to cast away the 'const'
1035 * from r->name because we know we definitely allocated it.
1037 ARMCPRegInfo
*r
= data
;
1039 g_free((void *)r
->name
);
1043 static void arm_cpu_initfn(Object
*obj
)
1045 ARMCPU
*cpu
= ARM_CPU(obj
);
1047 cpu_set_cpustate_pointers(cpu
);
1048 cpu
->cp_regs
= g_hash_table_new_full(g_int_hash
, g_int_equal
,
1049 g_free
, cpreg_hashtable_data_destroy
);
1051 QLIST_INIT(&cpu
->pre_el_change_hooks
);
1052 QLIST_INIT(&cpu
->el_change_hooks
);
1054 #ifndef CONFIG_USER_ONLY
1055 /* Our inbound IRQ and FIQ lines */
1056 if (kvm_enabled()) {
1057 /* VIRQ and VFIQ are unused with KVM but we add them to maintain
1058 * the same interface as non-KVM CPUs.
1060 qdev_init_gpio_in(DEVICE(cpu
), arm_cpu_kvm_set_irq
, 4);
1062 qdev_init_gpio_in(DEVICE(cpu
), arm_cpu_set_irq
, 4);
1065 qdev_init_gpio_out(DEVICE(cpu
), cpu
->gt_timer_outputs
,
1066 ARRAY_SIZE(cpu
->gt_timer_outputs
));
1068 qdev_init_gpio_out_named(DEVICE(cpu
), &cpu
->gicv3_maintenance_interrupt
,
1069 "gicv3-maintenance-interrupt", 1);
1070 qdev_init_gpio_out_named(DEVICE(cpu
), &cpu
->pmu_interrupt
,
1071 "pmu-interrupt", 1);
1074 /* DTB consumers generally don't in fact care what the 'compatible'
1075 * string is, so always provide some string and trust that a hypothetical
1076 * picky DTB consumer will also provide a helpful error message.
1078 cpu
->dtb_compatible
= "qemu,unknown";
1079 cpu
->psci_version
= 1; /* By default assume PSCI v0.1 */
1080 cpu
->kvm_target
= QEMU_KVM_ARM_TARGET_NONE
;
1082 if (tcg_enabled()) {
1083 cpu
->psci_version
= 2; /* TCG implements PSCI 0.2 */
1087 static Property arm_cpu_gt_cntfrq_property
=
1088 DEFINE_PROP_UINT64("cntfrq", ARMCPU
, gt_cntfrq_hz
,
1089 NANOSECONDS_PER_SECOND
/ GTIMER_SCALE
);
1091 static Property arm_cpu_reset_cbar_property
=
1092 DEFINE_PROP_UINT64("reset-cbar", ARMCPU
, reset_cbar
, 0);
1094 static Property arm_cpu_reset_hivecs_property
=
1095 DEFINE_PROP_BOOL("reset-hivecs", ARMCPU
, reset_hivecs
, false);
1097 static Property arm_cpu_rvbar_property
=
1098 DEFINE_PROP_UINT64("rvbar", ARMCPU
, rvbar
, 0);
1100 #ifndef CONFIG_USER_ONLY
1101 static Property arm_cpu_has_el2_property
=
1102 DEFINE_PROP_BOOL("has_el2", ARMCPU
, has_el2
, true);
1104 static Property arm_cpu_has_el3_property
=
1105 DEFINE_PROP_BOOL("has_el3", ARMCPU
, has_el3
, true);
1108 static Property arm_cpu_cfgend_property
=
1109 DEFINE_PROP_BOOL("cfgend", ARMCPU
, cfgend
, false);
1111 static Property arm_cpu_has_vfp_property
=
1112 DEFINE_PROP_BOOL("vfp", ARMCPU
, has_vfp
, true);
1114 static Property arm_cpu_has_neon_property
=
1115 DEFINE_PROP_BOOL("neon", ARMCPU
, has_neon
, true);
1117 static Property arm_cpu_has_dsp_property
=
1118 DEFINE_PROP_BOOL("dsp", ARMCPU
, has_dsp
, true);
1120 static Property arm_cpu_has_mpu_property
=
1121 DEFINE_PROP_BOOL("has-mpu", ARMCPU
, has_mpu
, true);
1123 /* This is like DEFINE_PROP_UINT32 but it doesn't set the default value,
1124 * because the CPU initfn will have already set cpu->pmsav7_dregion to
1125 * the right value for that particular CPU type, and we don't want
1126 * to override that with an incorrect constant value.
1128 static Property arm_cpu_pmsav7_dregion_property
=
1129 DEFINE_PROP_UNSIGNED_NODEFAULT("pmsav7-dregion", ARMCPU
,
1131 qdev_prop_uint32
, uint32_t);
1133 static bool arm_get_pmu(Object
*obj
, Error
**errp
)
1135 ARMCPU
*cpu
= ARM_CPU(obj
);
1137 return cpu
->has_pmu
;
1140 static void arm_set_pmu(Object
*obj
, bool value
, Error
**errp
)
1142 ARMCPU
*cpu
= ARM_CPU(obj
);
1145 if (kvm_enabled() && !kvm_arm_pmu_supported()) {
1146 error_setg(errp
, "'pmu' feature not supported by KVM on this host");
1149 set_feature(&cpu
->env
, ARM_FEATURE_PMU
);
1151 unset_feature(&cpu
->env
, ARM_FEATURE_PMU
);
1153 cpu
->has_pmu
= value
;
1156 unsigned int gt_cntfrq_period_ns(ARMCPU
*cpu
)
1159 * The exact approach to calculating guest ticks is:
1161 * muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), cpu->gt_cntfrq_hz,
1162 * NANOSECONDS_PER_SECOND);
1164 * We don't do that. Rather we intentionally use integer division
1165 * truncation below and in the caller for the conversion of host monotonic
1166 * time to guest ticks to provide the exact inverse for the semantics of
1167 * the QEMUTimer scale factor. QEMUTimer's scale facter is an integer, so
1168 * it loses precision when representing frequencies where
1169 * `(NANOSECONDS_PER_SECOND % cpu->gt_cntfrq) > 0` holds. Failing to
1170 * provide an exact inverse leads to scheduling timers with negative
1171 * periods, which in turn leads to sticky behaviour in the guest.
1173 * Finally, CNTFRQ is effectively capped at 1GHz to ensure our scale factor
1174 * cannot become zero.
1176 return NANOSECONDS_PER_SECOND
> cpu
->gt_cntfrq_hz
?
1177 NANOSECONDS_PER_SECOND
/ cpu
->gt_cntfrq_hz
: 1;
1180 void arm_cpu_post_init(Object
*obj
)
1182 ARMCPU
*cpu
= ARM_CPU(obj
);
1184 /* M profile implies PMSA. We have to do this here rather than
1185 * in realize with the other feature-implication checks because
1186 * we look at the PMSA bit to see if we should add some properties.
1188 if (arm_feature(&cpu
->env
, ARM_FEATURE_M
)) {
1189 set_feature(&cpu
->env
, ARM_FEATURE_PMSA
);
1192 if (arm_feature(&cpu
->env
, ARM_FEATURE_CBAR
) ||
1193 arm_feature(&cpu
->env
, ARM_FEATURE_CBAR_RO
)) {
1194 qdev_property_add_static(DEVICE(obj
), &arm_cpu_reset_cbar_property
);
1197 if (!arm_feature(&cpu
->env
, ARM_FEATURE_M
)) {
1198 qdev_property_add_static(DEVICE(obj
), &arm_cpu_reset_hivecs_property
);
1201 if (arm_feature(&cpu
->env
, ARM_FEATURE_AARCH64
)) {
1202 qdev_property_add_static(DEVICE(obj
), &arm_cpu_rvbar_property
);
1205 #ifndef CONFIG_USER_ONLY
1206 if (arm_feature(&cpu
->env
, ARM_FEATURE_EL3
)) {
1207 /* Add the has_el3 state CPU property only if EL3 is allowed. This will
1208 * prevent "has_el3" from existing on CPUs which cannot support EL3.
1210 qdev_property_add_static(DEVICE(obj
), &arm_cpu_has_el3_property
);
1212 object_property_add_link(obj
, "secure-memory",
1214 (Object
**)&cpu
->secure_memory
,
1215 qdev_prop_allow_set_link_before_realize
,
1216 OBJ_PROP_LINK_STRONG
);
1219 if (arm_feature(&cpu
->env
, ARM_FEATURE_EL2
)) {
1220 qdev_property_add_static(DEVICE(obj
), &arm_cpu_has_el2_property
);
1224 if (arm_feature(&cpu
->env
, ARM_FEATURE_PMU
)) {
1225 cpu
->has_pmu
= true;
1226 object_property_add_bool(obj
, "pmu", arm_get_pmu
, arm_set_pmu
);
1230 * Allow user to turn off VFP and Neon support, but only for TCG --
1231 * KVM does not currently allow us to lie to the guest about its
1232 * ID/feature registers, so the guest always sees what the host has.
1234 if (arm_feature(&cpu
->env
, ARM_FEATURE_AARCH64
)
1235 ? cpu_isar_feature(aa64_fp_simd
, cpu
)
1236 : cpu_isar_feature(aa32_vfp
, cpu
)) {
1237 cpu
->has_vfp
= true;
1238 if (!kvm_enabled()) {
1239 qdev_property_add_static(DEVICE(obj
), &arm_cpu_has_vfp_property
);
1243 if (arm_feature(&cpu
->env
, ARM_FEATURE_NEON
)) {
1244 cpu
->has_neon
= true;
1245 if (!kvm_enabled()) {
1246 qdev_property_add_static(DEVICE(obj
), &arm_cpu_has_neon_property
);
1250 if (arm_feature(&cpu
->env
, ARM_FEATURE_M
) &&
1251 arm_feature(&cpu
->env
, ARM_FEATURE_THUMB_DSP
)) {
1252 qdev_property_add_static(DEVICE(obj
), &arm_cpu_has_dsp_property
);
1255 if (arm_feature(&cpu
->env
, ARM_FEATURE_PMSA
)) {
1256 qdev_property_add_static(DEVICE(obj
), &arm_cpu_has_mpu_property
);
1257 if (arm_feature(&cpu
->env
, ARM_FEATURE_V7
)) {
1258 qdev_property_add_static(DEVICE(obj
),
1259 &arm_cpu_pmsav7_dregion_property
);
1263 if (arm_feature(&cpu
->env
, ARM_FEATURE_M_SECURITY
)) {
1264 object_property_add_link(obj
, "idau", TYPE_IDAU_INTERFACE
, &cpu
->idau
,
1265 qdev_prop_allow_set_link_before_realize
,
1266 OBJ_PROP_LINK_STRONG
);
1268 * M profile: initial value of the Secure VTOR. We can't just use
1269 * a simple DEFINE_PROP_UINT32 for this because we want to permit
1270 * the property to be set after realize.
1272 object_property_add_uint32_ptr(obj
, "init-svtor",
1274 OBJ_PROP_FLAG_READWRITE
);
1277 qdev_property_add_static(DEVICE(obj
), &arm_cpu_cfgend_property
);
1279 if (arm_feature(&cpu
->env
, ARM_FEATURE_GENERIC_TIMER
)) {
1280 qdev_property_add_static(DEVICE(cpu
), &arm_cpu_gt_cntfrq_property
);
1283 if (kvm_enabled()) {
1284 kvm_arm_add_vcpu_properties(obj
);
1287 #ifndef CONFIG_USER_ONLY
1288 if (arm_feature(&cpu
->env
, ARM_FEATURE_AARCH64
) &&
1289 cpu_isar_feature(aa64_mte
, cpu
)) {
1290 object_property_add_link(obj
, "tag-memory",
1292 (Object
**)&cpu
->tag_memory
,
1293 qdev_prop_allow_set_link_before_realize
,
1294 OBJ_PROP_LINK_STRONG
);
1296 if (arm_feature(&cpu
->env
, ARM_FEATURE_EL3
)) {
1297 object_property_add_link(obj
, "secure-tag-memory",
1299 (Object
**)&cpu
->secure_tag_memory
,
1300 qdev_prop_allow_set_link_before_realize
,
1301 OBJ_PROP_LINK_STRONG
);
1307 static void arm_cpu_finalizefn(Object
*obj
)
1309 ARMCPU
*cpu
= ARM_CPU(obj
);
1310 ARMELChangeHook
*hook
, *next
;
1312 g_hash_table_destroy(cpu
->cp_regs
);
1314 QLIST_FOREACH_SAFE(hook
, &cpu
->pre_el_change_hooks
, node
, next
) {
1315 QLIST_REMOVE(hook
, node
);
1318 QLIST_FOREACH_SAFE(hook
, &cpu
->el_change_hooks
, node
, next
) {
1319 QLIST_REMOVE(hook
, node
);
1322 #ifndef CONFIG_USER_ONLY
1323 if (cpu
->pmu_timer
) {
1324 timer_free(cpu
->pmu_timer
);
1329 void arm_cpu_finalize_features(ARMCPU
*cpu
, Error
**errp
)
1331 Error
*local_err
= NULL
;
1333 if (arm_feature(&cpu
->env
, ARM_FEATURE_AARCH64
)) {
1334 arm_cpu_sve_finalize(cpu
, &local_err
);
1335 if (local_err
!= NULL
) {
1336 error_propagate(errp
, local_err
);
1341 * KVM does not support modifications to this feature.
1342 * We have not registered the cpu properties when KVM
1343 * is in use, so the user will not be able to set them.
1345 if (!kvm_enabled()) {
1346 arm_cpu_pauth_finalize(cpu
, &local_err
);
1347 if (local_err
!= NULL
) {
1348 error_propagate(errp
, local_err
);
1354 if (kvm_enabled()) {
1355 kvm_arm_steal_time_finalize(cpu
, &local_err
);
1356 if (local_err
!= NULL
) {
1357 error_propagate(errp
, local_err
);
1363 static void arm_cpu_realizefn(DeviceState
*dev
, Error
**errp
)
1365 CPUState
*cs
= CPU(dev
);
1366 ARMCPU
*cpu
= ARM_CPU(dev
);
1367 ARMCPUClass
*acc
= ARM_CPU_GET_CLASS(dev
);
1368 CPUARMState
*env
= &cpu
->env
;
1370 Error
*local_err
= NULL
;
1371 bool no_aa32
= false;
1373 /* If we needed to query the host kernel for the CPU features
1374 * then it's possible that might have failed in the initfn, but
1375 * this is the first point where we can report it.
1377 if (cpu
->host_cpu_probe_failed
) {
1378 if (!kvm_enabled()) {
1379 error_setg(errp
, "The 'host' CPU type can only be used with KVM");
1381 error_setg(errp
, "Failed to retrieve host CPU features");
1386 #ifndef CONFIG_USER_ONLY
1387 /* The NVIC and M-profile CPU are two halves of a single piece of
1388 * hardware; trying to use one without the other is a command line
1389 * error and will result in segfaults if not caught here.
1391 if (arm_feature(env
, ARM_FEATURE_M
)) {
1393 error_setg(errp
, "This board cannot be used with Cortex-M CPUs");
1398 error_setg(errp
, "This board can only be used with Cortex-M CPUs");
1406 if (arm_feature(env
, ARM_FEATURE_GENERIC_TIMER
)) {
1407 if (!cpu
->gt_cntfrq_hz
) {
1408 error_setg(errp
, "Invalid CNTFRQ: %"PRId64
"Hz",
1412 scale
= gt_cntfrq_period_ns(cpu
);
1414 scale
= GTIMER_SCALE
;
1417 cpu
->gt_timer
[GTIMER_PHYS
] = timer_new(QEMU_CLOCK_VIRTUAL
, scale
,
1418 arm_gt_ptimer_cb
, cpu
);
1419 cpu
->gt_timer
[GTIMER_VIRT
] = timer_new(QEMU_CLOCK_VIRTUAL
, scale
,
1420 arm_gt_vtimer_cb
, cpu
);
1421 cpu
->gt_timer
[GTIMER_HYP
] = timer_new(QEMU_CLOCK_VIRTUAL
, scale
,
1422 arm_gt_htimer_cb
, cpu
);
1423 cpu
->gt_timer
[GTIMER_SEC
] = timer_new(QEMU_CLOCK_VIRTUAL
, scale
,
1424 arm_gt_stimer_cb
, cpu
);
1425 cpu
->gt_timer
[GTIMER_HYPVIRT
] = timer_new(QEMU_CLOCK_VIRTUAL
, scale
,
1426 arm_gt_hvtimer_cb
, cpu
);
1430 cpu_exec_realizefn(cs
, &local_err
);
1431 if (local_err
!= NULL
) {
1432 error_propagate(errp
, local_err
);
1436 arm_cpu_finalize_features(cpu
, &local_err
);
1437 if (local_err
!= NULL
) {
1438 error_propagate(errp
, local_err
);
1442 if (arm_feature(env
, ARM_FEATURE_AARCH64
) &&
1443 cpu
->has_vfp
!= cpu
->has_neon
) {
1445 * This is an architectural requirement for AArch64; AArch32 is
1446 * more flexible and permits VFP-no-Neon and Neon-no-VFP.
1449 "AArch64 CPUs must have both VFP and Neon or neither");
1453 if (!cpu
->has_vfp
) {
1457 t
= cpu
->isar
.id_aa64isar1
;
1458 t
= FIELD_DP64(t
, ID_AA64ISAR1
, JSCVT
, 0);
1459 cpu
->isar
.id_aa64isar1
= t
;
1461 t
= cpu
->isar
.id_aa64pfr0
;
1462 t
= FIELD_DP64(t
, ID_AA64PFR0
, FP
, 0xf);
1463 cpu
->isar
.id_aa64pfr0
= t
;
1465 u
= cpu
->isar
.id_isar6
;
1466 u
= FIELD_DP32(u
, ID_ISAR6
, JSCVT
, 0);
1467 cpu
->isar
.id_isar6
= u
;
1469 u
= cpu
->isar
.mvfr0
;
1470 u
= FIELD_DP32(u
, MVFR0
, FPSP
, 0);
1471 u
= FIELD_DP32(u
, MVFR0
, FPDP
, 0);
1472 u
= FIELD_DP32(u
, MVFR0
, FPDIVIDE
, 0);
1473 u
= FIELD_DP32(u
, MVFR0
, FPSQRT
, 0);
1474 u
= FIELD_DP32(u
, MVFR0
, FPROUND
, 0);
1475 if (!arm_feature(env
, ARM_FEATURE_M
)) {
1476 u
= FIELD_DP32(u
, MVFR0
, FPTRAP
, 0);
1477 u
= FIELD_DP32(u
, MVFR0
, FPSHVEC
, 0);
1479 cpu
->isar
.mvfr0
= u
;
1481 u
= cpu
->isar
.mvfr1
;
1482 u
= FIELD_DP32(u
, MVFR1
, FPFTZ
, 0);
1483 u
= FIELD_DP32(u
, MVFR1
, FPDNAN
, 0);
1484 u
= FIELD_DP32(u
, MVFR1
, FPHP
, 0);
1485 if (arm_feature(env
, ARM_FEATURE_M
)) {
1486 u
= FIELD_DP32(u
, MVFR1
, FP16
, 0);
1488 cpu
->isar
.mvfr1
= u
;
1490 u
= cpu
->isar
.mvfr2
;
1491 u
= FIELD_DP32(u
, MVFR2
, FPMISC
, 0);
1492 cpu
->isar
.mvfr2
= u
;
1495 if (!cpu
->has_neon
) {
1499 unset_feature(env
, ARM_FEATURE_NEON
);
1501 t
= cpu
->isar
.id_aa64isar0
;
1502 t
= FIELD_DP64(t
, ID_AA64ISAR0
, DP
, 0);
1503 cpu
->isar
.id_aa64isar0
= t
;
1505 t
= cpu
->isar
.id_aa64isar1
;
1506 t
= FIELD_DP64(t
, ID_AA64ISAR1
, FCMA
, 0);
1507 cpu
->isar
.id_aa64isar1
= t
;
1509 t
= cpu
->isar
.id_aa64pfr0
;
1510 t
= FIELD_DP64(t
, ID_AA64PFR0
, ADVSIMD
, 0xf);
1511 cpu
->isar
.id_aa64pfr0
= t
;
1513 u
= cpu
->isar
.id_isar5
;
1514 u
= FIELD_DP32(u
, ID_ISAR5
, RDM
, 0);
1515 u
= FIELD_DP32(u
, ID_ISAR5
, VCMA
, 0);
1516 cpu
->isar
.id_isar5
= u
;
1518 u
= cpu
->isar
.id_isar6
;
1519 u
= FIELD_DP32(u
, ID_ISAR6
, DP
, 0);
1520 u
= FIELD_DP32(u
, ID_ISAR6
, FHM
, 0);
1521 cpu
->isar
.id_isar6
= u
;
1523 if (!arm_feature(env
, ARM_FEATURE_M
)) {
1524 u
= cpu
->isar
.mvfr1
;
1525 u
= FIELD_DP32(u
, MVFR1
, SIMDLS
, 0);
1526 u
= FIELD_DP32(u
, MVFR1
, SIMDINT
, 0);
1527 u
= FIELD_DP32(u
, MVFR1
, SIMDSP
, 0);
1528 u
= FIELD_DP32(u
, MVFR1
, SIMDHP
, 0);
1529 cpu
->isar
.mvfr1
= u
;
1531 u
= cpu
->isar
.mvfr2
;
1532 u
= FIELD_DP32(u
, MVFR2
, SIMDMISC
, 0);
1533 cpu
->isar
.mvfr2
= u
;
1537 if (!cpu
->has_neon
&& !cpu
->has_vfp
) {
1541 t
= cpu
->isar
.id_aa64isar0
;
1542 t
= FIELD_DP64(t
, ID_AA64ISAR0
, FHM
, 0);
1543 cpu
->isar
.id_aa64isar0
= t
;
1545 t
= cpu
->isar
.id_aa64isar1
;
1546 t
= FIELD_DP64(t
, ID_AA64ISAR1
, FRINTTS
, 0);
1547 cpu
->isar
.id_aa64isar1
= t
;
1549 u
= cpu
->isar
.mvfr0
;
1550 u
= FIELD_DP32(u
, MVFR0
, SIMDREG
, 0);
1551 cpu
->isar
.mvfr0
= u
;
1553 /* Despite the name, this field covers both VFP and Neon */
1554 u
= cpu
->isar
.mvfr1
;
1555 u
= FIELD_DP32(u
, MVFR1
, SIMDFMAC
, 0);
1556 cpu
->isar
.mvfr1
= u
;
1559 if (arm_feature(env
, ARM_FEATURE_M
) && !cpu
->has_dsp
) {
1562 unset_feature(env
, ARM_FEATURE_THUMB_DSP
);
1564 u
= cpu
->isar
.id_isar1
;
1565 u
= FIELD_DP32(u
, ID_ISAR1
, EXTEND
, 1);
1566 cpu
->isar
.id_isar1
= u
;
1568 u
= cpu
->isar
.id_isar2
;
1569 u
= FIELD_DP32(u
, ID_ISAR2
, MULTU
, 1);
1570 u
= FIELD_DP32(u
, ID_ISAR2
, MULTS
, 1);
1571 cpu
->isar
.id_isar2
= u
;
1573 u
= cpu
->isar
.id_isar3
;
1574 u
= FIELD_DP32(u
, ID_ISAR3
, SIMD
, 1);
1575 u
= FIELD_DP32(u
, ID_ISAR3
, SATURATE
, 0);
1576 cpu
->isar
.id_isar3
= u
;
1579 /* Some features automatically imply others: */
1580 if (arm_feature(env
, ARM_FEATURE_V8
)) {
1581 if (arm_feature(env
, ARM_FEATURE_M
)) {
1582 set_feature(env
, ARM_FEATURE_V7
);
1584 set_feature(env
, ARM_FEATURE_V7VE
);
1589 * There exist AArch64 cpus without AArch32 support. When KVM
1590 * queries ID_ISAR0_EL1 on such a host, the value is UNKNOWN.
1591 * Similarly, we cannot check ID_AA64PFR0 without AArch64 support.
1592 * As a general principle, we also do not make ID register
1593 * consistency checks anywhere unless using TCG, because only
1594 * for TCG would a consistency-check failure be a QEMU bug.
1596 if (arm_feature(&cpu
->env
, ARM_FEATURE_AARCH64
)) {
1597 no_aa32
= !cpu_isar_feature(aa64_aa32
, cpu
);
1600 if (arm_feature(env
, ARM_FEATURE_V7VE
)) {
1601 /* v7 Virtualization Extensions. In real hardware this implies
1602 * EL2 and also the presence of the Security Extensions.
1603 * For QEMU, for backwards-compatibility we implement some
1604 * CPUs or CPU configs which have no actual EL2 or EL3 but do
1605 * include the various other features that V7VE implies.
1606 * Presence of EL2 itself is ARM_FEATURE_EL2, and of the
1607 * Security Extensions is ARM_FEATURE_EL3.
1609 assert(!tcg_enabled() || no_aa32
||
1610 cpu_isar_feature(aa32_arm_div
, cpu
));
1611 set_feature(env
, ARM_FEATURE_LPAE
);
1612 set_feature(env
, ARM_FEATURE_V7
);
1614 if (arm_feature(env
, ARM_FEATURE_V7
)) {
1615 set_feature(env
, ARM_FEATURE_VAPA
);
1616 set_feature(env
, ARM_FEATURE_THUMB2
);
1617 set_feature(env
, ARM_FEATURE_MPIDR
);
1618 if (!arm_feature(env
, ARM_FEATURE_M
)) {
1619 set_feature(env
, ARM_FEATURE_V6K
);
1621 set_feature(env
, ARM_FEATURE_V6
);
1624 /* Always define VBAR for V7 CPUs even if it doesn't exist in
1625 * non-EL3 configs. This is needed by some legacy boards.
1627 set_feature(env
, ARM_FEATURE_VBAR
);
1629 if (arm_feature(env
, ARM_FEATURE_V6K
)) {
1630 set_feature(env
, ARM_FEATURE_V6
);
1631 set_feature(env
, ARM_FEATURE_MVFR
);
1633 if (arm_feature(env
, ARM_FEATURE_V6
)) {
1634 set_feature(env
, ARM_FEATURE_V5
);
1635 if (!arm_feature(env
, ARM_FEATURE_M
)) {
1636 assert(!tcg_enabled() || no_aa32
||
1637 cpu_isar_feature(aa32_jazelle
, cpu
));
1638 set_feature(env
, ARM_FEATURE_AUXCR
);
1641 if (arm_feature(env
, ARM_FEATURE_V5
)) {
1642 set_feature(env
, ARM_FEATURE_V4T
);
1644 if (arm_feature(env
, ARM_FEATURE_LPAE
)) {
1645 set_feature(env
, ARM_FEATURE_V7MP
);
1647 if (arm_feature(env
, ARM_FEATURE_CBAR_RO
)) {
1648 set_feature(env
, ARM_FEATURE_CBAR
);
1650 if (arm_feature(env
, ARM_FEATURE_THUMB2
) &&
1651 !arm_feature(env
, ARM_FEATURE_M
)) {
1652 set_feature(env
, ARM_FEATURE_THUMB_DSP
);
1656 * We rely on no XScale CPU having VFP so we can use the same bits in the
1657 * TB flags field for VECSTRIDE and XSCALE_CPAR.
1659 assert(arm_feature(&cpu
->env
, ARM_FEATURE_AARCH64
) ||
1660 !cpu_isar_feature(aa32_vfp_simd
, cpu
) ||
1661 !arm_feature(env
, ARM_FEATURE_XSCALE
));
1663 if (arm_feature(env
, ARM_FEATURE_V7
) &&
1664 !arm_feature(env
, ARM_FEATURE_M
) &&
1665 !arm_feature(env
, ARM_FEATURE_PMSA
)) {
1666 /* v7VMSA drops support for the old ARMv5 tiny pages, so we
1671 /* For CPUs which might have tiny 1K pages, or which have an
1672 * MPU and might have small region sizes, stick with 1K pages.
1676 if (!set_preferred_target_page_bits(pagebits
)) {
1677 /* This can only ever happen for hotplugging a CPU, or if
1678 * the board code incorrectly creates a CPU which it has
1679 * promised via minimum_page_size that it will not.
1681 error_setg(errp
, "This CPU requires a smaller page size than the "
1686 /* This cpu-id-to-MPIDR affinity is used only for TCG; KVM will override it.
1687 * We don't support setting cluster ID ([16..23]) (known as Aff2
1688 * in later ARM ARM versions), or any of the higher affinity level fields,
1689 * so these bits always RAZ.
1691 if (cpu
->mp_affinity
== ARM64_AFFINITY_INVALID
) {
1692 cpu
->mp_affinity
= arm_cpu_mp_affinity(cs
->cpu_index
,
1693 ARM_DEFAULT_CPUS_PER_CLUSTER
);
1696 if (cpu
->reset_hivecs
) {
1697 cpu
->reset_sctlr
|= (1 << 13);
1701 if (arm_feature(&cpu
->env
, ARM_FEATURE_V7
)) {
1702 cpu
->reset_sctlr
|= SCTLR_EE
;
1704 cpu
->reset_sctlr
|= SCTLR_B
;
1708 if (!arm_feature(env
, ARM_FEATURE_M
) && !cpu
->has_el3
) {
1709 /* If the has_el3 CPU property is disabled then we need to disable the
1712 unset_feature(env
, ARM_FEATURE_EL3
);
1714 /* Disable the security extension feature bits in the processor feature
1715 * registers as well. These are id_pfr1[7:4] and id_aa64pfr0[15:12].
1717 cpu
->isar
.id_pfr1
&= ~0xf0;
1718 cpu
->isar
.id_aa64pfr0
&= ~0xf000;
1721 if (!cpu
->has_el2
) {
1722 unset_feature(env
, ARM_FEATURE_EL2
);
1725 if (!cpu
->has_pmu
) {
1726 unset_feature(env
, ARM_FEATURE_PMU
);
1728 if (arm_feature(env
, ARM_FEATURE_PMU
)) {
1731 if (!kvm_enabled()) {
1732 arm_register_pre_el_change_hook(cpu
, &pmu_pre_el_change
, 0);
1733 arm_register_el_change_hook(cpu
, &pmu_post_el_change
, 0);
1736 #ifndef CONFIG_USER_ONLY
1737 cpu
->pmu_timer
= timer_new_ns(QEMU_CLOCK_VIRTUAL
, arm_pmu_timer_cb
,
1741 cpu
->isar
.id_aa64dfr0
=
1742 FIELD_DP64(cpu
->isar
.id_aa64dfr0
, ID_AA64DFR0
, PMUVER
, 0);
1743 cpu
->isar
.id_dfr0
= FIELD_DP32(cpu
->isar
.id_dfr0
, ID_DFR0
, PERFMON
, 0);
1748 if (!arm_feature(env
, ARM_FEATURE_EL2
)) {
1749 /* Disable the hypervisor feature bits in the processor feature
1750 * registers if we don't have EL2. These are id_pfr1[15:12] and
1751 * id_aa64pfr0_el1[11:8].
1753 cpu
->isar
.id_aa64pfr0
&= ~0xf00;
1754 cpu
->isar
.id_pfr1
&= ~0xf000;
1757 #ifndef CONFIG_USER_ONLY
1758 if (cpu
->tag_memory
== NULL
&& cpu_isar_feature(aa64_mte
, cpu
)) {
1760 * Disable the MTE feature bits if we do not have tag-memory
1761 * provided by the machine.
1763 cpu
->isar
.id_aa64pfr1
=
1764 FIELD_DP64(cpu
->isar
.id_aa64pfr1
, ID_AA64PFR1
, MTE
, 0);
1768 /* MPU can be configured out of a PMSA CPU either by setting has-mpu
1769 * to false or by setting pmsav7-dregion to 0.
1771 if (!cpu
->has_mpu
) {
1772 cpu
->pmsav7_dregion
= 0;
1774 if (cpu
->pmsav7_dregion
== 0) {
1775 cpu
->has_mpu
= false;
1778 if (arm_feature(env
, ARM_FEATURE_PMSA
) &&
1779 arm_feature(env
, ARM_FEATURE_V7
)) {
1780 uint32_t nr
= cpu
->pmsav7_dregion
;
1783 error_setg(errp
, "PMSAv7 MPU #regions invalid %" PRIu32
, nr
);
1788 if (arm_feature(env
, ARM_FEATURE_V8
)) {
1790 env
->pmsav8
.rbar
[M_REG_NS
] = g_new0(uint32_t, nr
);
1791 env
->pmsav8
.rlar
[M_REG_NS
] = g_new0(uint32_t, nr
);
1792 if (arm_feature(env
, ARM_FEATURE_M_SECURITY
)) {
1793 env
->pmsav8
.rbar
[M_REG_S
] = g_new0(uint32_t, nr
);
1794 env
->pmsav8
.rlar
[M_REG_S
] = g_new0(uint32_t, nr
);
1797 env
->pmsav7
.drbar
= g_new0(uint32_t, nr
);
1798 env
->pmsav7
.drsr
= g_new0(uint32_t, nr
);
1799 env
->pmsav7
.dracr
= g_new0(uint32_t, nr
);
1804 if (arm_feature(env
, ARM_FEATURE_M_SECURITY
)) {
1805 uint32_t nr
= cpu
->sau_sregion
;
1808 error_setg(errp
, "v8M SAU #regions invalid %" PRIu32
, nr
);
1813 env
->sau
.rbar
= g_new0(uint32_t, nr
);
1814 env
->sau
.rlar
= g_new0(uint32_t, nr
);
1818 if (arm_feature(env
, ARM_FEATURE_EL3
)) {
1819 set_feature(env
, ARM_FEATURE_VBAR
);
1822 register_cp_regs_for_features(cpu
);
1823 arm_cpu_register_gdb_regs_for_features(cpu
);
1825 init_cpreg_list(cpu
);
1827 #ifndef CONFIG_USER_ONLY
1828 MachineState
*ms
= MACHINE(qdev_get_machine());
1829 unsigned int smp_cpus
= ms
->smp
.cpus
;
1830 bool has_secure
= cpu
->has_el3
|| arm_feature(env
, ARM_FEATURE_M_SECURITY
);
1833 * We must set cs->num_ases to the final value before
1834 * the first call to cpu_address_space_init.
1836 if (cpu
->tag_memory
!= NULL
) {
1837 cs
->num_ases
= 3 + has_secure
;
1839 cs
->num_ases
= 1 + has_secure
;
1843 if (!cpu
->secure_memory
) {
1844 cpu
->secure_memory
= cs
->memory
;
1846 cpu_address_space_init(cs
, ARMASIdx_S
, "cpu-secure-memory",
1847 cpu
->secure_memory
);
1850 if (cpu
->tag_memory
!= NULL
) {
1851 cpu_address_space_init(cs
, ARMASIdx_TagNS
, "cpu-tag-memory",
1854 cpu_address_space_init(cs
, ARMASIdx_TagS
, "cpu-tag-memory",
1855 cpu
->secure_tag_memory
);
1859 cpu_address_space_init(cs
, ARMASIdx_NS
, "cpu-memory", cs
->memory
);
1861 /* No core_count specified, default to smp_cpus. */
1862 if (cpu
->core_count
== -1) {
1863 cpu
->core_count
= smp_cpus
;
1867 if (tcg_enabled()) {
1868 int dcz_blocklen
= 4 << cpu
->dcz_blocksize
;
1871 * We only support DCZ blocklen that fits on one page.
1873 * Architectually this is always true. However TARGET_PAGE_SIZE
1874 * is variable and, for compatibility with -machine virt-2.7,
1875 * is only 1KiB, as an artifact of legacy ARMv5 subpage support.
1876 * But even then, while the largest architectural DCZ blocklen
1877 * is 2KiB, no cpu actually uses such a large blocklen.
1879 assert(dcz_blocklen
<= TARGET_PAGE_SIZE
);
1882 * We only support DCZ blocksize >= 2*TAG_GRANULE, which is to say
1883 * both nibbles of each byte storing tag data may be written at once.
1884 * Since TAG_GRANULE is 16, this means that blocklen must be >= 32.
1886 if (cpu_isar_feature(aa64_mte
, cpu
)) {
1887 assert(dcz_blocklen
>= 2 * TAG_GRANULE
);
1894 acc
->parent_realize(dev
, errp
);
1897 static ObjectClass
*arm_cpu_class_by_name(const char *cpu_model
)
1902 const char *cpunamestr
;
1904 cpuname
= g_strsplit(cpu_model
, ",", 1);
1905 cpunamestr
= cpuname
[0];
1906 #ifdef CONFIG_USER_ONLY
1907 /* For backwards compatibility usermode emulation allows "-cpu any",
1908 * which has the same semantics as "-cpu max".
1910 if (!strcmp(cpunamestr
, "any")) {
1914 typename
= g_strdup_printf(ARM_CPU_TYPE_NAME("%s"), cpunamestr
);
1915 oc
= object_class_by_name(typename
);
1916 g_strfreev(cpuname
);
1918 if (!oc
|| !object_class_dynamic_cast(oc
, TYPE_ARM_CPU
) ||
1919 object_class_is_abstract(oc
)) {
1925 static Property arm_cpu_properties
[] = {
1926 DEFINE_PROP_UINT32("psci-conduit", ARMCPU
, psci_conduit
, 0),
1927 DEFINE_PROP_UINT64("midr", ARMCPU
, midr
, 0),
1928 DEFINE_PROP_UINT64("mp-affinity", ARMCPU
,
1929 mp_affinity
, ARM64_AFFINITY_INVALID
),
1930 DEFINE_PROP_INT32("node-id", ARMCPU
, node_id
, CPU_UNSET_NUMA_NODE_ID
),
1931 DEFINE_PROP_INT32("core-count", ARMCPU
, core_count
, -1),
1932 DEFINE_PROP_END_OF_LIST()
1935 static gchar
*arm_gdb_arch_name(CPUState
*cs
)
1937 ARMCPU
*cpu
= ARM_CPU(cs
);
1938 CPUARMState
*env
= &cpu
->env
;
1940 if (arm_feature(env
, ARM_FEATURE_IWMMXT
)) {
1941 return g_strdup("iwmmxt");
1943 return g_strdup("arm");
1947 static struct TCGCPUOps arm_tcg_ops
= {
1948 .initialize
= arm_translate_init
,
1949 .synchronize_from_tb
= arm_cpu_synchronize_from_tb
,
1950 .cpu_exec_interrupt
= arm_cpu_exec_interrupt
,
1951 .tlb_fill
= arm_cpu_tlb_fill
,
1952 .debug_excp_handler
= arm_debug_excp_handler
,
1954 #if !defined(CONFIG_USER_ONLY)
1955 .do_interrupt
= arm_cpu_do_interrupt
,
1956 .do_transaction_failed
= arm_cpu_do_transaction_failed
,
1957 .do_unaligned_access
= arm_cpu_do_unaligned_access
,
1958 .adjust_watchpoint_address
= arm_adjust_watchpoint_address
,
1959 .debug_check_watchpoint
= arm_debug_check_watchpoint
,
1960 #endif /* !CONFIG_USER_ONLY */
1962 #endif /* CONFIG_TCG */
1964 static void arm_cpu_class_init(ObjectClass
*oc
, void *data
)
1966 ARMCPUClass
*acc
= ARM_CPU_CLASS(oc
);
1967 CPUClass
*cc
= CPU_CLASS(acc
);
1968 DeviceClass
*dc
= DEVICE_CLASS(oc
);
1970 device_class_set_parent_realize(dc
, arm_cpu_realizefn
,
1971 &acc
->parent_realize
);
1973 device_class_set_props(dc
, arm_cpu_properties
);
1974 device_class_set_parent_reset(dc
, arm_cpu_reset
, &acc
->parent_reset
);
1976 cc
->class_by_name
= arm_cpu_class_by_name
;
1977 cc
->has_work
= arm_cpu_has_work
;
1978 cc
->dump_state
= arm_cpu_dump_state
;
1979 cc
->set_pc
= arm_cpu_set_pc
;
1980 cc
->gdb_read_register
= arm_cpu_gdb_read_register
;
1981 cc
->gdb_write_register
= arm_cpu_gdb_write_register
;
1982 #ifndef CONFIG_USER_ONLY
1983 cc
->get_phys_page_attrs_debug
= arm_cpu_get_phys_page_attrs_debug
;
1984 cc
->asidx_from_attrs
= arm_asidx_from_attrs
;
1985 cc
->vmsd
= &vmstate_arm_cpu
;
1986 cc
->virtio_is_big_endian
= arm_cpu_virtio_is_big_endian
;
1987 cc
->write_elf64_note
= arm_cpu_write_elf64_note
;
1988 cc
->write_elf32_note
= arm_cpu_write_elf32_note
;
1990 cc
->gdb_num_core_regs
= 26;
1991 cc
->gdb_core_xml_file
= "arm-core.xml";
1992 cc
->gdb_arch_name
= arm_gdb_arch_name
;
1993 cc
->gdb_get_dynamic_xml
= arm_gdb_get_dynamic_xml
;
1994 cc
->gdb_stop_before_watchpoint
= true;
1995 cc
->disas_set_info
= arm_disas_set_info
;
1998 cc
->tcg_ops
= &arm_tcg_ops
;
1999 #endif /* CONFIG_TCG */
2003 static void arm_host_initfn(Object
*obj
)
2005 ARMCPU
*cpu
= ARM_CPU(obj
);
2007 kvm_arm_set_cpu_features_from_host(cpu
);
2008 if (arm_feature(&cpu
->env
, ARM_FEATURE_AARCH64
)) {
2009 aarch64_add_sve_properties(obj
);
2011 arm_cpu_post_init(obj
);
2014 static const TypeInfo host_arm_cpu_type_info
= {
2015 .name
= TYPE_ARM_HOST_CPU
,
2016 .parent
= TYPE_AARCH64_CPU
,
2017 .instance_init
= arm_host_initfn
,
2022 static void arm_cpu_instance_init(Object
*obj
)
2024 ARMCPUClass
*acc
= ARM_CPU_GET_CLASS(obj
);
2026 acc
->info
->initfn(obj
);
2027 arm_cpu_post_init(obj
);
2030 static void cpu_register_class_init(ObjectClass
*oc
, void *data
)
2032 ARMCPUClass
*acc
= ARM_CPU_CLASS(oc
);
2037 void arm_cpu_register(const ARMCPUInfo
*info
)
2039 TypeInfo type_info
= {
2040 .parent
= TYPE_ARM_CPU
,
2041 .instance_size
= sizeof(ARMCPU
),
2042 .instance_align
= __alignof__(ARMCPU
),
2043 .instance_init
= arm_cpu_instance_init
,
2044 .class_size
= sizeof(ARMCPUClass
),
2045 .class_init
= info
->class_init
?: cpu_register_class_init
,
2046 .class_data
= (void *)info
,
2049 type_info
.name
= g_strdup_printf("%s-" TYPE_ARM_CPU
, info
->name
);
2050 type_register(&type_info
);
2051 g_free((void *)type_info
.name
);
2054 static const TypeInfo arm_cpu_type_info
= {
2055 .name
= TYPE_ARM_CPU
,
2057 .instance_size
= sizeof(ARMCPU
),
2058 .instance_align
= __alignof__(ARMCPU
),
2059 .instance_init
= arm_cpu_initfn
,
2060 .instance_finalize
= arm_cpu_finalizefn
,
2062 .class_size
= sizeof(ARMCPUClass
),
2063 .class_init
= arm_cpu_class_init
,
2066 static void arm_cpu_register_types(void)
2068 type_register_static(&arm_cpu_type_info
);
2071 type_register_static(&host_arm_cpu_type_info
);
2075 type_init(arm_cpu_register_types
)