2 * ARM page table walking.
4 * This code is licensed under the GNU GPL v2 or later.
6 * SPDX-License-Identifier: GPL-2.0-or-later
9 #include "qemu/osdep.h"
11 #include "qemu/range.h"
12 #include "qemu/main-loop.h"
13 #include "exec/exec-all.h"
15 #include "internals.h"
19 typedef struct S1Translate
{
32 static bool get_phys_addr_lpae(CPUARMState
*env
, S1Translate
*ptw
,
34 MMUAccessType access_type
, bool s1_is_el0
,
35 GetPhysAddrResult
*result
, ARMMMUFaultInfo
*fi
)
36 __attribute__((nonnull
));
38 static bool get_phys_addr_with_struct(CPUARMState
*env
, S1Translate
*ptw
,
40 MMUAccessType access_type
,
41 GetPhysAddrResult
*result
,
43 __attribute__((nonnull
));
45 /* This mapping is common between ID_AA64MMFR0.PARANGE and TCR_ELx.{I}PS. */
46 static const uint8_t pamax_map
[] = {
56 /* The cpu-specific constant value of PAMax; also used by hw/arm/virt. */
57 unsigned int arm_pamax(ARMCPU
*cpu
)
59 if (arm_feature(&cpu
->env
, ARM_FEATURE_AARCH64
)) {
60 unsigned int parange
=
61 FIELD_EX64(cpu
->isar
.id_aa64mmfr0
, ID_AA64MMFR0
, PARANGE
);
64 * id_aa64mmfr0 is a read-only register so values outside of the
65 * supported mappings can be considered an implementation error.
67 assert(parange
< ARRAY_SIZE(pamax_map
));
68 return pamax_map
[parange
];
72 * In machvirt_init, we call arm_pamax on a cpu that is not fully
73 * initialized, so we can't rely on the propagation done in realize.
75 if (arm_feature(&cpu
->env
, ARM_FEATURE_LPAE
) ||
76 arm_feature(&cpu
->env
, ARM_FEATURE_V7VE
)) {
85 * Convert a possible stage1+2 MMU index into the appropriate stage 1 MMU index
87 ARMMMUIdx
stage_1_mmu_idx(ARMMMUIdx mmu_idx
)
91 return ARMMMUIdx_Stage1_E0
;
93 return ARMMMUIdx_Stage1_E1
;
94 case ARMMMUIdx_E10_1_PAN
:
95 return ARMMMUIdx_Stage1_E1_PAN
;
101 ARMMMUIdx
arm_stage1_mmu_idx(CPUARMState
*env
)
103 return stage_1_mmu_idx(arm_mmu_idx(env
));
107 * Return where we should do ptw loads from for a stage 2 walk.
108 * This depends on whether the address we are looking up is a
109 * Secure IPA or a NonSecure IPA, which we know from whether this is
110 * Stage2 or Stage2_S.
111 * If this is the Secure EL1&0 regime we need to check the NSW and SW bits.
113 static ARMMMUIdx
ptw_idx_for_stage_2(CPUARMState
*env
, ARMMMUIdx stage2idx
)
118 * We're OK to check the current state of the CPU here because
119 * (1) we always invalidate all TLBs when the SCR_EL3.NS bit changes
120 * (2) there's no way to do a lookup that cares about Stage 2 for a
121 * different security state to the current one for AArch64, and AArch32
122 * never has a secure EL2. (AArch32 ATS12NSO[UP][RW] allow EL3 to do
123 * an NS stage 1+2 lookup while the NS bit is 0.)
125 if (!arm_is_secure_below_el3(env
) || !arm_el_is_aa64(env
, 3)) {
126 return ARMMMUIdx_Phys_NS
;
128 if (stage2idx
== ARMMMUIdx_Stage2_S
) {
129 s2walk_secure
= !(env
->cp15
.vstcr_el2
& VSTCR_SW
);
131 s2walk_secure
= !(env
->cp15
.vtcr_el2
& VTCR_NSW
);
133 return s2walk_secure
? ARMMMUIdx_Phys_S
: ARMMMUIdx_Phys_NS
;
137 static bool regime_translation_big_endian(CPUARMState
*env
, ARMMMUIdx mmu_idx
)
139 return (regime_sctlr(env
, mmu_idx
) & SCTLR_EE
) != 0;
142 /* Return the TTBR associated with this translation regime */
143 static uint64_t regime_ttbr(CPUARMState
*env
, ARMMMUIdx mmu_idx
, int ttbrn
)
145 if (mmu_idx
== ARMMMUIdx_Stage2
) {
146 return env
->cp15
.vttbr_el2
;
148 if (mmu_idx
== ARMMMUIdx_Stage2_S
) {
149 return env
->cp15
.vsttbr_el2
;
152 return env
->cp15
.ttbr0_el
[regime_el(env
, mmu_idx
)];
154 return env
->cp15
.ttbr1_el
[regime_el(env
, mmu_idx
)];
158 /* Return true if the specified stage of address translation is disabled */
159 static bool regime_translation_disabled(CPUARMState
*env
, ARMMMUIdx mmu_idx
,
164 if (arm_feature(env
, ARM_FEATURE_M
)) {
165 switch (env
->v7m
.mpu_ctrl
[is_secure
] &
166 (R_V7M_MPU_CTRL_ENABLE_MASK
| R_V7M_MPU_CTRL_HFNMIENA_MASK
)) {
167 case R_V7M_MPU_CTRL_ENABLE_MASK
:
168 /* Enabled, but not for HardFault and NMI */
169 return mmu_idx
& ARM_MMU_IDX_M_NEGPRI
;
170 case R_V7M_MPU_CTRL_ENABLE_MASK
| R_V7M_MPU_CTRL_HFNMIENA_MASK
:
171 /* Enabled for all cases */
176 * HFNMIENA set and ENABLE clear is UNPREDICTABLE, but
177 * we warned about that in armv7m_nvic.c when the guest set it.
183 hcr_el2
= arm_hcr_el2_eff_secstate(env
, is_secure
);
186 case ARMMMUIdx_Stage2
:
187 case ARMMMUIdx_Stage2_S
:
188 /* HCR.DC means HCR.VM behaves as 1 */
189 return (hcr_el2
& (HCR_DC
| HCR_VM
)) == 0;
191 case ARMMMUIdx_E10_0
:
192 case ARMMMUIdx_E10_1
:
193 case ARMMMUIdx_E10_1_PAN
:
194 /* TGE means that EL0/1 act as if SCTLR_EL1.M is zero */
195 if (hcr_el2
& HCR_TGE
) {
200 case ARMMMUIdx_Stage1_E0
:
201 case ARMMMUIdx_Stage1_E1
:
202 case ARMMMUIdx_Stage1_E1_PAN
:
203 /* HCR.DC means SCTLR_EL1.M behaves as 0 */
204 if (hcr_el2
& HCR_DC
) {
209 case ARMMMUIdx_E20_0
:
210 case ARMMMUIdx_E20_2
:
211 case ARMMMUIdx_E20_2_PAN
:
216 case ARMMMUIdx_Phys_NS
:
217 case ARMMMUIdx_Phys_S
:
218 /* No translation for physical address spaces. */
222 g_assert_not_reached();
225 return (regime_sctlr(env
, mmu_idx
) & SCTLR_M
) == 0;
228 static bool S2_attrs_are_device(uint64_t hcr
, uint8_t attrs
)
231 * For an S1 page table walk, the stage 1 attributes are always
232 * some form of "this is Normal memory". The combined S1+S2
233 * attributes are therefore only Device if stage 2 specifies Device.
234 * With HCR_EL2.FWB == 0 this is when descriptor bits [5:4] are 0b00,
235 * ie when cacheattrs.attrs bits [3:2] are 0b00.
236 * With HCR_EL2.FWB == 1 this is when descriptor bit [4] is 0, ie
237 * when cacheattrs.attrs bit [2] is 0.
240 return (attrs
& 0x4) == 0;
242 return (attrs
& 0xc) == 0;
246 /* Translate a S1 pagetable walk through S2 if needed. */
247 static bool S1_ptw_translate(CPUARMState
*env
, S1Translate
*ptw
,
248 hwaddr addr
, ARMMMUFaultInfo
*fi
)
250 bool is_secure
= ptw
->in_secure
;
251 ARMMMUIdx mmu_idx
= ptw
->in_mmu_idx
;
252 ARMMMUIdx s2_mmu_idx
= ptw
->in_ptw_idx
;
255 ptw
->out_virt
= addr
;
257 if (unlikely(ptw
->in_debug
)) {
259 * From gdbstub, do not use softmmu so that we don't modify the
260 * state of the cpu at all, including softmmu tlb contents.
262 if (regime_is_stage2(s2_mmu_idx
)) {
263 S1Translate s2ptw
= {
264 .in_mmu_idx
= s2_mmu_idx
,
265 .in_ptw_idx
= ptw_idx_for_stage_2(env
, s2_mmu_idx
),
266 .in_secure
= s2_mmu_idx
== ARMMMUIdx_Stage2_S
,
269 GetPhysAddrResult s2
= { };
271 if (get_phys_addr_lpae(env
, &s2ptw
, addr
, MMU_DATA_LOAD
,
275 ptw
->out_phys
= s2
.f
.phys_addr
;
276 pte_attrs
= s2
.cacheattrs
.attrs
;
277 ptw
->out_secure
= s2
.f
.attrs
.secure
;
279 /* Regime is physical. */
280 ptw
->out_phys
= addr
;
282 ptw
->out_secure
= s2_mmu_idx
== ARMMMUIdx_Phys_S
;
284 ptw
->out_host
= NULL
;
288 CPUTLBEntryFull
*full
;
292 flags
= probe_access_full(env
, addr
, 0, MMU_DATA_LOAD
,
293 arm_to_core_mmu_idx(s2_mmu_idx
),
294 true, &ptw
->out_host
, &full
, 0);
297 if (unlikely(flags
& TLB_INVALID_MASK
)) {
300 ptw
->out_phys
= full
->phys_addr
| (addr
& ~TARGET_PAGE_MASK
);
301 ptw
->out_rw
= full
->prot
& PAGE_WRITE
;
302 pte_attrs
= full
->pte_attrs
;
303 ptw
->out_secure
= full
->attrs
.secure
;
305 g_assert_not_reached();
309 if (regime_is_stage2(s2_mmu_idx
)) {
310 uint64_t hcr
= arm_hcr_el2_eff_secstate(env
, is_secure
);
312 if ((hcr
& HCR_PTW
) && S2_attrs_are_device(hcr
, pte_attrs
)) {
314 * PTW set and S1 walk touched S2 Device memory:
315 * generate Permission fault.
317 fi
->type
= ARMFault_Permission
;
321 fi
->s1ns
= !is_secure
;
326 ptw
->out_be
= regime_translation_big_endian(env
, mmu_idx
);
330 assert(fi
->type
!= ARMFault_None
);
334 fi
->s1ns
= !is_secure
;
338 /* All loads done in the course of a page table walk go through here. */
339 static uint32_t arm_ldl_ptw(CPUARMState
*env
, S1Translate
*ptw
,
342 CPUState
*cs
= env_cpu(env
);
343 void *host
= ptw
->out_host
;
347 /* Page tables are in RAM, and we have the host address. */
348 data
= qatomic_read((uint32_t *)host
);
350 data
= be32_to_cpu(data
);
352 data
= le32_to_cpu(data
);
355 /* Page tables are in MMIO. */
356 MemTxAttrs attrs
= { .secure
= ptw
->out_secure
};
357 AddressSpace
*as
= arm_addressspace(cs
, attrs
);
358 MemTxResult result
= MEMTX_OK
;
361 data
= address_space_ldl_be(as
, ptw
->out_phys
, attrs
, &result
);
363 data
= address_space_ldl_le(as
, ptw
->out_phys
, attrs
, &result
);
365 if (unlikely(result
!= MEMTX_OK
)) {
366 fi
->type
= ARMFault_SyncExternalOnWalk
;
367 fi
->ea
= arm_extabort_type(result
);
374 static uint64_t arm_ldq_ptw(CPUARMState
*env
, S1Translate
*ptw
,
377 CPUState
*cs
= env_cpu(env
);
378 void *host
= ptw
->out_host
;
382 /* Page tables are in RAM, and we have the host address. */
383 #ifdef CONFIG_ATOMIC64
384 data
= qatomic_read__nocheck((uint64_t *)host
);
386 data
= be64_to_cpu(data
);
388 data
= le64_to_cpu(data
);
392 data
= ldq_be_p(host
);
394 data
= ldq_le_p(host
);
398 /* Page tables are in MMIO. */
399 MemTxAttrs attrs
= { .secure
= ptw
->out_secure
};
400 AddressSpace
*as
= arm_addressspace(cs
, attrs
);
401 MemTxResult result
= MEMTX_OK
;
404 data
= address_space_ldq_be(as
, ptw
->out_phys
, attrs
, &result
);
406 data
= address_space_ldq_le(as
, ptw
->out_phys
, attrs
, &result
);
408 if (unlikely(result
!= MEMTX_OK
)) {
409 fi
->type
= ARMFault_SyncExternalOnWalk
;
410 fi
->ea
= arm_extabort_type(result
);
417 static uint64_t arm_casq_ptw(CPUARMState
*env
, uint64_t old_val
,
418 uint64_t new_val
, S1Translate
*ptw
,
421 #ifdef TARGET_AARCH64
423 void *host
= ptw
->out_host
;
425 if (unlikely(!host
)) {
426 fi
->type
= ARMFault_UnsuppAtomicUpdate
;
432 * Raising a stage2 Protection fault for an atomic update to a read-only
433 * page is delayed until it is certain that there is a change to make.
435 if (unlikely(!ptw
->out_rw
)) {
440 flags
= probe_access_flags(env
, ptw
->out_virt
, 0, MMU_DATA_STORE
,
441 arm_to_core_mmu_idx(ptw
->in_ptw_idx
),
445 if (unlikely(flags
& TLB_INVALID_MASK
)) {
446 assert(fi
->type
!= ARMFault_None
);
447 fi
->s2addr
= ptw
->out_virt
;
450 fi
->s1ns
= !ptw
->in_secure
;
454 /* In case CAS mismatches and we loop, remember writability. */
458 #ifdef CONFIG_ATOMIC64
460 old_val
= cpu_to_be64(old_val
);
461 new_val
= cpu_to_be64(new_val
);
462 cur_val
= qatomic_cmpxchg__nocheck((uint64_t *)host
, old_val
, new_val
);
463 cur_val
= be64_to_cpu(cur_val
);
465 old_val
= cpu_to_le64(old_val
);
466 new_val
= cpu_to_le64(new_val
);
467 cur_val
= qatomic_cmpxchg__nocheck((uint64_t *)host
, old_val
, new_val
);
468 cur_val
= le64_to_cpu(cur_val
);
472 * We can't support the full 64-bit atomic cmpxchg on the host.
473 * Because this is only used for FEAT_HAFDBS, which is only for AA64,
474 * we know that TCG_OVERSIZED_GUEST is set, which means that we are
475 * running in round-robin mode and could only race with dma i/o.
477 #if !TCG_OVERSIZED_GUEST
478 # error "Unexpected configuration"
480 bool locked
= qemu_mutex_iothread_locked();
482 qemu_mutex_lock_iothread();
485 cur_val
= ldq_be_p(host
);
486 if (cur_val
== old_val
) {
487 stq_be_p(host
, new_val
);
490 cur_val
= ldq_le_p(host
);
491 if (cur_val
== old_val
) {
492 stq_le_p(host
, new_val
);
496 qemu_mutex_unlock_iothread();
502 /* AArch32 does not have FEAT_HADFS. */
503 g_assert_not_reached();
507 static bool get_level1_table_address(CPUARMState
*env
, ARMMMUIdx mmu_idx
,
508 uint32_t *table
, uint32_t address
)
510 /* Note that we can only get here for an AArch32 PL0/PL1 lookup */
511 uint64_t tcr
= regime_tcr(env
, mmu_idx
);
512 int maskshift
= extract32(tcr
, 0, 3);
513 uint32_t mask
= ~(((uint32_t)0xffffffffu
) >> maskshift
);
516 if (address
& mask
) {
517 if (tcr
& TTBCR_PD1
) {
518 /* Translation table walk disabled for TTBR1 */
521 *table
= regime_ttbr(env
, mmu_idx
, 1) & 0xffffc000;
523 if (tcr
& TTBCR_PD0
) {
524 /* Translation table walk disabled for TTBR0 */
527 base_mask
= ~((uint32_t)0x3fffu
>> maskshift
);
528 *table
= regime_ttbr(env
, mmu_idx
, 0) & base_mask
;
530 *table
|= (address
>> 18) & 0x3ffc;
535 * Translate section/page access permissions to page R/W protection flags
537 * @mmu_idx: MMU index indicating required translation regime
538 * @ap: The 3-bit access permissions (AP[2:0])
539 * @domain_prot: The 2-bit domain access permissions
540 * @is_user: TRUE if accessing from PL0
542 static int ap_to_rw_prot_is_user(CPUARMState
*env
, ARMMMUIdx mmu_idx
,
543 int ap
, int domain_prot
, bool is_user
)
545 if (domain_prot
== 3) {
546 return PAGE_READ
| PAGE_WRITE
;
551 if (arm_feature(env
, ARM_FEATURE_V7
)) {
554 switch (regime_sctlr(env
, mmu_idx
) & (SCTLR_S
| SCTLR_R
)) {
556 return is_user
? 0 : PAGE_READ
;
563 return is_user
? 0 : PAGE_READ
| PAGE_WRITE
;
568 return PAGE_READ
| PAGE_WRITE
;
571 return PAGE_READ
| PAGE_WRITE
;
572 case 4: /* Reserved. */
575 return is_user
? 0 : PAGE_READ
;
579 if (!arm_feature(env
, ARM_FEATURE_V6K
)) {
584 g_assert_not_reached();
589 * Translate section/page access permissions to page R/W protection flags
591 * @mmu_idx: MMU index indicating required translation regime
592 * @ap: The 3-bit access permissions (AP[2:0])
593 * @domain_prot: The 2-bit domain access permissions
595 static int ap_to_rw_prot(CPUARMState
*env
, ARMMMUIdx mmu_idx
,
596 int ap
, int domain_prot
)
598 return ap_to_rw_prot_is_user(env
, mmu_idx
, ap
, domain_prot
,
599 regime_is_user(env
, mmu_idx
));
603 * Translate section/page access permissions to page R/W protection flags.
604 * @ap: The 2-bit simple AP (AP[2:1])
605 * @is_user: TRUE if accessing from PL0
607 static int simple_ap_to_rw_prot_is_user(int ap
, bool is_user
)
611 return is_user
? 0 : PAGE_READ
| PAGE_WRITE
;
613 return PAGE_READ
| PAGE_WRITE
;
615 return is_user
? 0 : PAGE_READ
;
619 g_assert_not_reached();
623 static int simple_ap_to_rw_prot(CPUARMState
*env
, ARMMMUIdx mmu_idx
, int ap
)
625 return simple_ap_to_rw_prot_is_user(ap
, regime_is_user(env
, mmu_idx
));
628 static bool get_phys_addr_v5(CPUARMState
*env
, S1Translate
*ptw
,
629 uint32_t address
, MMUAccessType access_type
,
630 GetPhysAddrResult
*result
, ARMMMUFaultInfo
*fi
)
642 /* Pagetable walk. */
643 /* Lookup l1 descriptor. */
644 if (!get_level1_table_address(env
, ptw
->in_mmu_idx
, &table
, address
)) {
645 /* Section translation fault if page walk is disabled by PD0 or PD1 */
646 fi
->type
= ARMFault_Translation
;
649 if (!S1_ptw_translate(env
, ptw
, table
, fi
)) {
652 desc
= arm_ldl_ptw(env
, ptw
, fi
);
653 if (fi
->type
!= ARMFault_None
) {
657 domain
= (desc
>> 5) & 0x0f;
658 if (regime_el(env
, ptw
->in_mmu_idx
) == 1) {
659 dacr
= env
->cp15
.dacr_ns
;
661 dacr
= env
->cp15
.dacr_s
;
663 domain_prot
= (dacr
>> (domain
* 2)) & 3;
665 /* Section translation fault. */
666 fi
->type
= ARMFault_Translation
;
672 if (domain_prot
== 0 || domain_prot
== 2) {
673 fi
->type
= ARMFault_Domain
;
678 phys_addr
= (desc
& 0xfff00000) | (address
& 0x000fffff);
679 ap
= (desc
>> 10) & 3;
680 result
->f
.lg_page_size
= 20; /* 1MB */
682 /* Lookup l2 entry. */
684 /* Coarse pagetable. */
685 table
= (desc
& 0xfffffc00) | ((address
>> 10) & 0x3fc);
687 /* Fine pagetable. */
688 table
= (desc
& 0xfffff000) | ((address
>> 8) & 0xffc);
690 if (!S1_ptw_translate(env
, ptw
, table
, fi
)) {
693 desc
= arm_ldl_ptw(env
, ptw
, fi
);
694 if (fi
->type
!= ARMFault_None
) {
698 case 0: /* Page translation fault. */
699 fi
->type
= ARMFault_Translation
;
701 case 1: /* 64k page. */
702 phys_addr
= (desc
& 0xffff0000) | (address
& 0xffff);
703 ap
= (desc
>> (4 + ((address
>> 13) & 6))) & 3;
704 result
->f
.lg_page_size
= 16;
706 case 2: /* 4k page. */
707 phys_addr
= (desc
& 0xfffff000) | (address
& 0xfff);
708 ap
= (desc
>> (4 + ((address
>> 9) & 6))) & 3;
709 result
->f
.lg_page_size
= 12;
711 case 3: /* 1k page, or ARMv6/XScale "extended small (4k) page" */
713 /* ARMv6/XScale extended small page format */
714 if (arm_feature(env
, ARM_FEATURE_XSCALE
)
715 || arm_feature(env
, ARM_FEATURE_V6
)) {
716 phys_addr
= (desc
& 0xfffff000) | (address
& 0xfff);
717 result
->f
.lg_page_size
= 12;
720 * UNPREDICTABLE in ARMv5; we choose to take a
721 * page translation fault.
723 fi
->type
= ARMFault_Translation
;
727 phys_addr
= (desc
& 0xfffffc00) | (address
& 0x3ff);
728 result
->f
.lg_page_size
= 10;
730 ap
= (desc
>> 4) & 3;
733 /* Never happens, but compiler isn't smart enough to tell. */
734 g_assert_not_reached();
737 result
->f
.prot
= ap_to_rw_prot(env
, ptw
->in_mmu_idx
, ap
, domain_prot
);
738 result
->f
.prot
|= result
->f
.prot
? PAGE_EXEC
: 0;
739 if (!(result
->f
.prot
& (1 << access_type
))) {
740 /* Access permission fault. */
741 fi
->type
= ARMFault_Permission
;
744 result
->f
.phys_addr
= phys_addr
;
752 static bool get_phys_addr_v6(CPUARMState
*env
, S1Translate
*ptw
,
753 uint32_t address
, MMUAccessType access_type
,
754 GetPhysAddrResult
*result
, ARMMMUFaultInfo
*fi
)
756 ARMCPU
*cpu
= env_archcpu(env
);
757 ARMMMUIdx mmu_idx
= ptw
->in_mmu_idx
;
772 /* Pagetable walk. */
773 /* Lookup l1 descriptor. */
774 if (!get_level1_table_address(env
, mmu_idx
, &table
, address
)) {
775 /* Section translation fault if page walk is disabled by PD0 or PD1 */
776 fi
->type
= ARMFault_Translation
;
779 if (!S1_ptw_translate(env
, ptw
, table
, fi
)) {
782 desc
= arm_ldl_ptw(env
, ptw
, fi
);
783 if (fi
->type
!= ARMFault_None
) {
787 if (type
== 0 || (type
== 3 && !cpu_isar_feature(aa32_pxn
, cpu
))) {
788 /* Section translation fault, or attempt to use the encoding
789 * which is Reserved on implementations without PXN.
791 fi
->type
= ARMFault_Translation
;
794 if ((type
== 1) || !(desc
& (1 << 18))) {
795 /* Page or Section. */
796 domain
= (desc
>> 5) & 0x0f;
798 if (regime_el(env
, mmu_idx
) == 1) {
799 dacr
= env
->cp15
.dacr_ns
;
801 dacr
= env
->cp15
.dacr_s
;
806 domain_prot
= (dacr
>> (domain
* 2)) & 3;
807 if (domain_prot
== 0 || domain_prot
== 2) {
808 /* Section or Page domain fault */
809 fi
->type
= ARMFault_Domain
;
813 if (desc
& (1 << 18)) {
815 phys_addr
= (desc
& 0xff000000) | (address
& 0x00ffffff);
816 phys_addr
|= (uint64_t)extract32(desc
, 20, 4) << 32;
817 phys_addr
|= (uint64_t)extract32(desc
, 5, 4) << 36;
818 result
->f
.lg_page_size
= 24; /* 16MB */
821 phys_addr
= (desc
& 0xfff00000) | (address
& 0x000fffff);
822 result
->f
.lg_page_size
= 20; /* 1MB */
824 ap
= ((desc
>> 10) & 3) | ((desc
>> 13) & 4);
825 xn
= desc
& (1 << 4);
827 ns
= extract32(desc
, 19, 1);
829 if (cpu_isar_feature(aa32_pxn
, cpu
)) {
830 pxn
= (desc
>> 2) & 1;
832 ns
= extract32(desc
, 3, 1);
833 /* Lookup l2 entry. */
834 table
= (desc
& 0xfffffc00) | ((address
>> 10) & 0x3fc);
835 if (!S1_ptw_translate(env
, ptw
, table
, fi
)) {
838 desc
= arm_ldl_ptw(env
, ptw
, fi
);
839 if (fi
->type
!= ARMFault_None
) {
842 ap
= ((desc
>> 4) & 3) | ((desc
>> 7) & 4);
844 case 0: /* Page translation fault. */
845 fi
->type
= ARMFault_Translation
;
847 case 1: /* 64k page. */
848 phys_addr
= (desc
& 0xffff0000) | (address
& 0xffff);
849 xn
= desc
& (1 << 15);
850 result
->f
.lg_page_size
= 16;
852 case 2: case 3: /* 4k page. */
853 phys_addr
= (desc
& 0xfffff000) | (address
& 0xfff);
855 result
->f
.lg_page_size
= 12;
858 /* Never happens, but compiler isn't smart enough to tell. */
859 g_assert_not_reached();
862 if (domain_prot
== 3) {
863 result
->f
.prot
= PAGE_READ
| PAGE_WRITE
| PAGE_EXEC
;
865 if (pxn
&& !regime_is_user(env
, mmu_idx
)) {
868 if (xn
&& access_type
== MMU_INST_FETCH
) {
869 fi
->type
= ARMFault_Permission
;
873 if (arm_feature(env
, ARM_FEATURE_V6K
) &&
874 (regime_sctlr(env
, mmu_idx
) & SCTLR_AFE
)) {
875 /* The simplified model uses AP[0] as an access control bit. */
877 /* Access flag fault. */
878 fi
->type
= ARMFault_AccessFlag
;
881 result
->f
.prot
= simple_ap_to_rw_prot(env
, mmu_idx
, ap
>> 1);
882 user_prot
= simple_ap_to_rw_prot_is_user(ap
>> 1, 1);
884 result
->f
.prot
= ap_to_rw_prot(env
, mmu_idx
, ap
, domain_prot
);
885 user_prot
= ap_to_rw_prot_is_user(env
, mmu_idx
, ap
, domain_prot
, 1);
887 if (result
->f
.prot
&& !xn
) {
888 result
->f
.prot
|= PAGE_EXEC
;
890 if (!(result
->f
.prot
& (1 << access_type
))) {
891 /* Access permission fault. */
892 fi
->type
= ARMFault_Permission
;
895 if (regime_is_pan(env
, mmu_idx
) &&
896 !regime_is_user(env
, mmu_idx
) &&
898 access_type
!= MMU_INST_FETCH
) {
899 /* Privileged Access Never fault */
900 fi
->type
= ARMFault_Permission
;
905 /* The NS bit will (as required by the architecture) have no effect if
906 * the CPU doesn't support TZ or this is a non-secure translation
907 * regime, because the attribute will already be non-secure.
909 result
->f
.attrs
.secure
= false;
911 result
->f
.phys_addr
= phys_addr
;
920 * Translate S2 section/page access permissions to protection flags
922 * @s2ap: The 2-bit stage2 access permissions (S2AP)
923 * @xn: XN (execute-never) bits
924 * @s1_is_el0: true if this is S2 of an S1+2 walk for EL0
926 static int get_S2prot(CPUARMState
*env
, int s2ap
, int xn
, bool s1_is_el0
)
937 if (cpu_isar_feature(any_tts2uxn
, env_archcpu(env
))) {
955 g_assert_not_reached();
958 if (!extract32(xn
, 1, 1)) {
959 if (arm_el_is_aa64(env
, 2) || prot
& PAGE_READ
) {
968 * Translate section/page access permissions to protection flags
970 * @mmu_idx: MMU index indicating required translation regime
971 * @is_aa64: TRUE if AArch64
972 * @ap: The 2-bit simple AP (AP[2:1])
973 * @ns: NS (non-secure) bit
974 * @xn: XN (execute-never) bit
975 * @pxn: PXN (privileged execute-never) bit
977 static int get_S1prot(CPUARMState
*env
, ARMMMUIdx mmu_idx
, bool is_aa64
,
978 int ap
, int ns
, int xn
, int pxn
)
980 ARMCPU
*cpu
= env_archcpu(env
);
981 bool is_user
= regime_is_user(env
, mmu_idx
);
982 int prot_rw
, user_rw
;
986 assert(!regime_is_stage2(mmu_idx
));
988 user_rw
= simple_ap_to_rw_prot_is_user(ap
, true);
993 * PAN controls can forbid data accesses but don't affect insn fetch.
994 * Plain PAN forbids data accesses if EL0 has data permissions;
995 * PAN3 forbids data accesses if EL0 has either data or exec perms.
996 * Note that for AArch64 the 'user can exec' case is exactly !xn.
997 * We make the IMPDEF choices that SCR_EL3.SIF and Realm EL2&0
998 * do not affect EPAN.
1000 if (user_rw
&& regime_is_pan(env
, mmu_idx
)) {
1002 } else if (cpu_isar_feature(aa64_pan3
, cpu
) && is_aa64
&&
1003 regime_is_pan(env
, mmu_idx
) &&
1004 (regime_sctlr(env
, mmu_idx
) & SCTLR_EPAN
) && !xn
) {
1007 prot_rw
= simple_ap_to_rw_prot_is_user(ap
, false);
1011 if (ns
&& arm_is_secure(env
) && (env
->cp15
.scr_el3
& SCR_SIF
)) {
1015 /* TODO have_wxn should be replaced with
1016 * ARM_FEATURE_V8 || (ARM_FEATURE_V7 && ARM_FEATURE_EL2)
1017 * when ARM_FEATURE_EL2 starts getting set. For now we assume all LPAE
1018 * compatible processors have EL2, which is required for [U]WXN.
1020 have_wxn
= arm_feature(env
, ARM_FEATURE_LPAE
);
1023 wxn
= regime_sctlr(env
, mmu_idx
) & SCTLR_WXN
;
1027 if (regime_has_2_ranges(mmu_idx
) && !is_user
) {
1028 xn
= pxn
|| (user_rw
& PAGE_WRITE
);
1030 } else if (arm_feature(env
, ARM_FEATURE_V7
)) {
1031 switch (regime_el(env
, mmu_idx
)) {
1035 xn
= xn
|| !(user_rw
& PAGE_READ
);
1039 uwxn
= regime_sctlr(env
, mmu_idx
) & SCTLR_UWXN
;
1041 xn
= xn
|| !(prot_rw
& PAGE_READ
) || pxn
||
1042 (uwxn
&& (user_rw
& PAGE_WRITE
));
1052 if (xn
|| (wxn
&& (prot_rw
& PAGE_WRITE
))) {
1055 return prot_rw
| PAGE_EXEC
;
1058 static ARMVAParameters
aa32_va_parameters(CPUARMState
*env
, uint32_t va
,
1061 uint64_t tcr
= regime_tcr(env
, mmu_idx
);
1062 uint32_t el
= regime_el(env
, mmu_idx
);
1066 assert(mmu_idx
!= ARMMMUIdx_Stage2_S
);
1068 if (mmu_idx
== ARMMMUIdx_Stage2
) {
1070 bool sext
= extract32(tcr
, 4, 1);
1071 bool sign
= extract32(tcr
, 3, 1);
1074 * If the sign-extend bit is not the same as t0sz[3], the result
1075 * is unpredictable. Flag this as a guest error.
1078 qemu_log_mask(LOG_GUEST_ERROR
,
1079 "AArch32: VTCR.S / VTCR.T0SZ[3] mismatch\n");
1081 tsz
= sextract32(tcr
, 0, 4) + 8;
1085 } else if (el
== 2) {
1087 tsz
= extract32(tcr
, 0, 3);
1089 hpd
= extract64(tcr
, 24, 1);
1092 int t0sz
= extract32(tcr
, 0, 3);
1093 int t1sz
= extract32(tcr
, 16, 3);
1096 select
= va
> (0xffffffffu
>> t0sz
);
1098 /* Note that we will detect errors later. */
1099 select
= va
>= ~(0xffffffffu
>> t1sz
);
1103 epd
= extract32(tcr
, 7, 1);
1104 hpd
= extract64(tcr
, 41, 1);
1107 epd
= extract32(tcr
, 23, 1);
1108 hpd
= extract64(tcr
, 42, 1);
1110 /* For aarch32, hpd0 is not enabled without t2e as well. */
1111 hpd
&= extract32(tcr
, 6, 1);
1114 return (ARMVAParameters
) {
1123 * check_s2_mmu_setup
1125 * @is_aa64: True if the translation regime is in AArch64 state
1126 * @tcr: VTCR_EL2 or VSTCR_EL2
1127 * @ds: Effective value of TCR.DS.
1128 * @iasize: Bitsize of IPAs
1129 * @stride: Page-table stride (See the ARM ARM)
1131 * Decode the starting level of the S2 lookup, returning INT_MIN if
1132 * the configuration is invalid.
1134 static int check_s2_mmu_setup(ARMCPU
*cpu
, bool is_aa64
, uint64_t tcr
,
1135 bool ds
, int iasize
, int stride
)
1137 int sl0
, sl2
, startlevel
, granulebits
, levels
;
1138 int s1_min_iasize
, s1_max_iasize
;
1140 sl0
= extract32(tcr
, 6, 2);
1143 * AArch64.S2InvalidSL: Interpretation of SL depends on the page size,
1144 * so interleave AArch64.S2StartLevel.
1148 /* SL2 is RES0 unless DS=1 & 4KB granule. */
1149 sl2
= extract64(tcr
, 33, 1);
1156 startlevel
= 2 - sl0
;
1159 if (arm_pamax(cpu
) < 44) {
1164 if (!cpu_isar_feature(aa64_st
, cpu
)) {
1175 if (arm_pamax(cpu
) < 42) {
1185 startlevel
= 3 - sl0
;
1190 if (arm_pamax(cpu
) < 44) {
1197 startlevel
= 3 - sl0
;
1200 g_assert_not_reached();
1204 * Things are simpler for AArch32 EL2, with only 4k pages.
1205 * There is no separate S2InvalidSL function, but AArch32.S2Walk
1206 * begins with walkparms.sl0 in {'1x'}.
1208 assert(stride
== 9);
1212 startlevel
= 2 - sl0
;
1215 /* AArch{64,32}.S2InconsistentSL are functionally equivalent. */
1216 levels
= 3 - startlevel
;
1217 granulebits
= stride
+ 3;
1219 s1_min_iasize
= levels
* stride
+ granulebits
+ 1;
1220 s1_max_iasize
= s1_min_iasize
+ (stride
- 1) + 4;
1222 if (iasize
>= s1_min_iasize
&& iasize
<= s1_max_iasize
) {
1231 * get_phys_addr_lpae: perform one stage of page table walk, LPAE format
1233 * Returns false if the translation was successful. Otherwise, phys_ptr,
1234 * attrs, prot and page_size may not be filled in, and the populated fsr
1235 * value provides information on why the translation aborted, in the format
1236 * of a long-format DFSR/IFSR fault register, with the following caveat:
1237 * the WnR bit is never set (the caller must do this).
1240 * @ptw: Current and next stage parameters for the walk.
1241 * @address: virtual address to get physical address for
1242 * @access_type: MMU_DATA_LOAD, MMU_DATA_STORE or MMU_INST_FETCH
1243 * @s1_is_el0: if @ptw->in_mmu_idx is ARMMMUIdx_Stage2
1244 * (so this is a stage 2 page table walk),
1245 * must be true if this is stage 2 of a stage 1+2
1246 * walk for an EL0 access. If @mmu_idx is anything else,
1247 * @s1_is_el0 is ignored.
1248 * @result: set on translation success,
1249 * @fi: set to fault info if the translation fails
1251 static bool get_phys_addr_lpae(CPUARMState
*env
, S1Translate
*ptw
,
1253 MMUAccessType access_type
, bool s1_is_el0
,
1254 GetPhysAddrResult
*result
, ARMMMUFaultInfo
*fi
)
1256 ARMCPU
*cpu
= env_archcpu(env
);
1257 ARMMMUIdx mmu_idx
= ptw
->in_mmu_idx
;
1258 bool is_secure
= ptw
->in_secure
;
1260 ARMVAParameters param
;
1262 hwaddr descaddr
, indexmask
, indexmask_grainsize
;
1263 uint32_t tableattrs
;
1264 target_ulong page_size
;
1267 int addrsize
, inputsize
, outputsize
;
1268 uint64_t tcr
= regime_tcr(env
, mmu_idx
);
1269 int ap
, ns
, xn
, pxn
;
1270 uint32_t el
= regime_el(env
, mmu_idx
);
1271 uint64_t descaddrmask
;
1272 bool aarch64
= arm_el_is_aa64(env
, el
);
1273 uint64_t descriptor
, new_descriptor
;
1276 /* TODO: This code does not support shareability levels. */
1280 param
= aa64_va_parameters(env
, address
, mmu_idx
,
1281 access_type
!= MMU_INST_FETCH
,
1282 !arm_el_is_aa64(env
, 1));
1286 * If TxSZ is programmed to a value larger than the maximum,
1287 * or smaller than the effective minimum, it is IMPLEMENTATION
1288 * DEFINED whether we behave as if the field were programmed
1289 * within bounds, or if a level 0 Translation fault is generated.
1291 * With FEAT_LVA, fault on less than minimum becomes required,
1292 * so our choice is to always raise the fault.
1294 if (param
.tsz_oob
) {
1295 goto do_translation_fault
;
1298 addrsize
= 64 - 8 * param
.tbi
;
1299 inputsize
= 64 - param
.tsz
;
1302 * Bound PS by PARANGE to find the effective output address size.
1303 * ID_AA64MMFR0 is a read-only register so values outside of the
1304 * supported mappings can be considered an implementation error.
1306 ps
= FIELD_EX64(cpu
->isar
.id_aa64mmfr0
, ID_AA64MMFR0
, PARANGE
);
1307 ps
= MIN(ps
, param
.ps
);
1308 assert(ps
< ARRAY_SIZE(pamax_map
));
1309 outputsize
= pamax_map
[ps
];
1312 * With LPA2, the effective output address (OA) size is at most 48 bits
1313 * unless TCR.DS == 1
1315 if (!param
.ds
&& param
.gran
!= Gran64K
) {
1316 outputsize
= MIN(outputsize
, 48);
1319 param
= aa32_va_parameters(env
, address
, mmu_idx
);
1321 addrsize
= (mmu_idx
== ARMMMUIdx_Stage2
? 40 : 32);
1322 inputsize
= addrsize
- param
.tsz
;
1327 * We determined the region when collecting the parameters, but we
1328 * have not yet validated that the address is valid for the region.
1329 * Extract the top bits and verify that they all match select.
1331 * For aa32, if inputsize == addrsize, then we have selected the
1332 * region by exclusion in aa32_va_parameters and there is no more
1333 * validation to do here.
1335 if (inputsize
< addrsize
) {
1336 target_ulong top_bits
= sextract64(address
, inputsize
,
1337 addrsize
- inputsize
);
1338 if (-top_bits
!= param
.select
) {
1339 /* The gap between the two regions is a Translation fault */
1340 goto do_translation_fault
;
1344 stride
= arm_granule_bits(param
.gran
) - 3;
1347 * Note that QEMU ignores shareability and cacheability attributes,
1348 * so we don't need to do anything with the SH, ORGN, IRGN fields
1349 * in the TTBCR. Similarly, TTBCR:A1 selects whether we get the
1350 * ASID from TTBR0 or TTBR1, but QEMU's TLB doesn't currently
1351 * implement any ASID-like capability so we can ignore it (instead
1352 * we will always flush the TLB any time the ASID is changed).
1354 ttbr
= regime_ttbr(env
, mmu_idx
, param
.select
);
1357 * Here we should have set up all the parameters for the translation:
1358 * inputsize, ttbr, epd, stride, tbi
1363 * Translation table walk disabled => Translation fault on TLB miss
1364 * Note: This is always 0 on 64-bit EL2 and EL3.
1366 goto do_translation_fault
;
1369 if (!regime_is_stage2(mmu_idx
)) {
1371 * The starting level depends on the virtual address size (which can
1372 * be up to 48 bits) and the translation granule size. It indicates
1373 * the number of strides (stride bits at a time) needed to
1374 * consume the bits of the input address. In the pseudocode this is:
1375 * level = 4 - RoundUp((inputsize - grainsize) / stride)
1376 * where their 'inputsize' is our 'inputsize', 'grainsize' is
1377 * our 'stride + 3' and 'stride' is our 'stride'.
1378 * Applying the usual "rounded up m/n is (m+n-1)/n" and simplifying:
1379 * = 4 - (inputsize - stride - 3 + stride - 1) / stride
1380 * = 4 - (inputsize - 4) / stride;
1382 level
= 4 - (inputsize
- 4) / stride
;
1384 int startlevel
= check_s2_mmu_setup(cpu
, aarch64
, tcr
, param
.ds
,
1386 if (startlevel
== INT_MIN
) {
1388 goto do_translation_fault
;
1393 indexmask_grainsize
= MAKE_64BIT_MASK(0, stride
+ 3);
1394 indexmask
= MAKE_64BIT_MASK(0, inputsize
- (stride
* (4 - level
)));
1396 /* Now we can extract the actual base address from the TTBR */
1397 descaddr
= extract64(ttbr
, 0, 48);
1400 * For FEAT_LPA and PS=6, bits [51:48] of descaddr are in [5:2] of TTBR.
1402 * Otherwise, if the base address is out of range, raise AddressSizeFault.
1403 * In the pseudocode, this is !IsZero(baseregister<47:outputsize>),
1404 * but we've just cleared the bits above 47, so simplify the test.
1406 if (outputsize
> 48) {
1407 descaddr
|= extract64(ttbr
, 2, 4) << 48;
1408 } else if (descaddr
>> outputsize
) {
1410 fi
->type
= ARMFault_AddressSize
;
1415 * We rely on this masking to clear the RES0 bits at the bottom of the TTBR
1416 * and also to mask out CnP (bit 0) which could validly be non-zero.
1418 descaddr
&= ~indexmask
;
1421 * For AArch32, the address field in the descriptor goes up to bit 39
1422 * for both v7 and v8. However, for v8 the SBZ bits [47:40] must be 0
1423 * or an AddressSize fault is raised. So for v8 we extract those SBZ
1424 * bits as part of the address, which will be checked via outputsize.
1425 * For AArch64, the address field goes up to bit 47, or 49 with FEAT_LPA2;
1426 * the highest bits of a 52-bit output are placed elsewhere.
1429 descaddrmask
= MAKE_64BIT_MASK(0, 50);
1430 } else if (arm_feature(env
, ARM_FEATURE_V8
)) {
1431 descaddrmask
= MAKE_64BIT_MASK(0, 48);
1433 descaddrmask
= MAKE_64BIT_MASK(0, 40);
1435 descaddrmask
&= ~indexmask_grainsize
;
1438 * Secure stage 1 accesses start with the page table in secure memory and
1439 * can be downgraded to non-secure at any step. Non-secure accesses
1440 * remain non-secure. We implement this by just ORing in the NSTable/NS
1441 * bits at each step.
1442 * Stage 2 never gets this kind of downgrade.
1444 tableattrs
= is_secure
? 0 : (1 << 4);
1447 descaddr
|= (address
>> (stride
* (4 - level
))) & indexmask
;
1449 nstable
= !regime_is_stage2(mmu_idx
) && extract32(tableattrs
, 4, 1);
1452 * Stage2_S -> Stage2 or Phys_S -> Phys_NS
1453 * Assert that the non-secure idx are even, and relative order.
1455 QEMU_BUILD_BUG_ON((ARMMMUIdx_Phys_NS
& 1) != 0);
1456 QEMU_BUILD_BUG_ON((ARMMMUIdx_Stage2
& 1) != 0);
1457 QEMU_BUILD_BUG_ON(ARMMMUIdx_Phys_NS
+ 1 != ARMMMUIdx_Phys_S
);
1458 QEMU_BUILD_BUG_ON(ARMMMUIdx_Stage2
+ 1 != ARMMMUIdx_Stage2_S
);
1459 ptw
->in_ptw_idx
&= ~1;
1460 ptw
->in_secure
= false;
1462 if (!S1_ptw_translate(env
, ptw
, descaddr
, fi
)) {
1465 descriptor
= arm_ldq_ptw(env
, ptw
, fi
);
1466 if (fi
->type
!= ARMFault_None
) {
1469 new_descriptor
= descriptor
;
1471 restart_atomic_update
:
1472 if (!(descriptor
& 1) || (!(descriptor
& 2) && (level
== 3))) {
1473 /* Invalid, or the Reserved level 3 encoding */
1474 goto do_translation_fault
;
1477 descaddr
= descriptor
& descaddrmask
;
1480 * For FEAT_LPA and PS=6, bits [51:48] of descaddr are in [15:12]
1481 * of descriptor. For FEAT_LPA2 and effective DS, bits [51:50] of
1482 * descaddr are in [9:8]. Otherwise, if descaddr is out of range,
1483 * raise AddressSizeFault.
1485 if (outputsize
> 48) {
1487 descaddr
|= extract64(descriptor
, 8, 2) << 50;
1489 descaddr
|= extract64(descriptor
, 12, 4) << 48;
1491 } else if (descaddr
>> outputsize
) {
1492 fi
->type
= ARMFault_AddressSize
;
1496 if ((descriptor
& 2) && (level
< 3)) {
1498 * Table entry. The top five bits are attributes which may
1499 * propagate down through lower levels of the table (and
1500 * which are all arranged so that 0 means "no effect", so
1501 * we can gather them up by ORing in the bits at each level).
1503 tableattrs
|= extract64(descriptor
, 59, 5);
1505 indexmask
= indexmask_grainsize
;
1510 * Block entry at level 1 or 2, or page entry at level 3.
1511 * These are basically the same thing, although the number
1512 * of bits we pull in from the vaddr varies. Note that although
1513 * descaddrmask masks enough of the low bits of the descriptor
1514 * to give a correct page or table address, the address field
1515 * in a block descriptor is smaller; so we need to explicitly
1516 * clear the lower bits here before ORing in the low vaddr bits.
1518 * Afterward, descaddr is the final physical address.
1520 page_size
= (1ULL << ((stride
* (4 - level
)) + 3));
1521 descaddr
&= ~(hwaddr
)(page_size
- 1);
1522 descaddr
|= (address
& (page_size
- 1));
1524 if (likely(!ptw
->in_debug
)) {
1527 * If HA is enabled, prepare to update the descriptor below.
1528 * Otherwise, pass the access fault on to software.
1530 if (!(descriptor
& (1 << 10))) {
1532 new_descriptor
|= 1 << 10; /* AF */
1534 fi
->type
= ARMFault_AccessFlag
;
1541 * If HD is enabled, pre-emptively set/clear the appropriate AP/S2AP
1542 * bit for writeback. The actual write protection test may still be
1543 * overridden by tableattrs, to be merged below.
1546 && extract64(descriptor
, 51, 1) /* DBM */
1547 && access_type
== MMU_DATA_STORE
) {
1548 if (regime_is_stage2(mmu_idx
)) {
1549 new_descriptor
|= 1ull << 7; /* set S2AP[1] */
1551 new_descriptor
&= ~(1ull << 7); /* clear AP[2] */
1557 * Extract attributes from the (modified) descriptor, and apply
1558 * table descriptors. Stage 2 table descriptors do not include
1559 * any attribute fields. HPD disables all the table attributes
1562 attrs
= new_descriptor
& (MAKE_64BIT_MASK(2, 10) | MAKE_64BIT_MASK(50, 14));
1563 if (!regime_is_stage2(mmu_idx
)) {
1564 attrs
|= nstable
<< 5; /* NS */
1566 attrs
|= extract64(tableattrs
, 0, 2) << 53; /* XN, PXN */
1568 * The sense of AP[1] vs APTable[0] is reversed, as APTable[0] == 1
1569 * means "force PL1 access only", which means forcing AP[1] to 0.
1571 attrs
&= ~(extract64(tableattrs
, 2, 1) << 6); /* !APT[0] => AP[1] */
1572 attrs
|= extract32(tableattrs
, 3, 1) << 7; /* APT[1] => AP[2] */
1576 ap
= extract32(attrs
, 6, 2);
1577 if (regime_is_stage2(mmu_idx
)) {
1578 ns
= mmu_idx
== ARMMMUIdx_Stage2
;
1579 xn
= extract64(attrs
, 53, 2);
1580 result
->f
.prot
= get_S2prot(env
, ap
, xn
, s1_is_el0
);
1582 ns
= extract32(attrs
, 5, 1);
1583 xn
= extract64(attrs
, 54, 1);
1584 pxn
= extract64(attrs
, 53, 1);
1585 result
->f
.prot
= get_S1prot(env
, mmu_idx
, aarch64
, ap
, ns
, xn
, pxn
);
1588 if (!(result
->f
.prot
& (1 << access_type
))) {
1589 fi
->type
= ARMFault_Permission
;
1593 /* If FEAT_HAFDBS has made changes, update the PTE. */
1594 if (new_descriptor
!= descriptor
) {
1595 new_descriptor
= arm_casq_ptw(env
, descriptor
, new_descriptor
, ptw
, fi
);
1596 if (fi
->type
!= ARMFault_None
) {
1600 * I_YZSVV says that if the in-memory descriptor has changed,
1601 * then we must use the information in that new value
1602 * (which might include a different output address, different
1603 * attributes, or generate a fault).
1604 * Restart the handling of the descriptor value from scratch.
1606 if (new_descriptor
!= descriptor
) {
1607 descriptor
= new_descriptor
;
1608 goto restart_atomic_update
;
1614 * The NS bit will (as required by the architecture) have no effect if
1615 * the CPU doesn't support TZ or this is a non-secure translation
1616 * regime, because the attribute will already be non-secure.
1618 result
->f
.attrs
.secure
= false;
1621 if (regime_is_stage2(mmu_idx
)) {
1622 result
->cacheattrs
.is_s2_format
= true;
1623 result
->cacheattrs
.attrs
= extract32(attrs
, 2, 4);
1625 /* Index into MAIR registers for cache attributes */
1626 uint8_t attrindx
= extract32(attrs
, 2, 3);
1627 uint64_t mair
= env
->cp15
.mair_el
[regime_el(env
, mmu_idx
)];
1628 assert(attrindx
<= 7);
1629 result
->cacheattrs
.is_s2_format
= false;
1630 result
->cacheattrs
.attrs
= extract64(mair
, attrindx
* 8, 8);
1632 /* When in aarch64 mode, and BTI is enabled, remember GP in the TLB. */
1633 if (aarch64
&& cpu_isar_feature(aa64_bti
, cpu
)) {
1634 result
->f
.guarded
= extract64(attrs
, 50, 1); /* GP */
1639 * For FEAT_LPA2 and effective DS, the SH field in the attributes
1640 * was re-purposed for output address bits. The SH attribute in
1641 * that case comes from TCR_ELx, which we extracted earlier.
1644 result
->cacheattrs
.shareability
= param
.sh
;
1646 result
->cacheattrs
.shareability
= extract32(attrs
, 8, 2);
1649 result
->f
.phys_addr
= descaddr
;
1650 result
->f
.lg_page_size
= ctz64(page_size
);
1653 do_translation_fault
:
1654 fi
->type
= ARMFault_Translation
;
1657 /* Tag the error as S2 for failed S1 PTW at S2 or ordinary S2. */
1658 fi
->stage2
= fi
->s1ptw
|| regime_is_stage2(mmu_idx
);
1659 fi
->s1ns
= mmu_idx
== ARMMMUIdx_Stage2
;
1663 static bool get_phys_addr_pmsav5(CPUARMState
*env
, uint32_t address
,
1664 MMUAccessType access_type
, ARMMMUIdx mmu_idx
,
1665 bool is_secure
, GetPhysAddrResult
*result
,
1666 ARMMMUFaultInfo
*fi
)
1671 bool is_user
= regime_is_user(env
, mmu_idx
);
1673 if (regime_translation_disabled(env
, mmu_idx
, is_secure
)) {
1675 result
->f
.phys_addr
= address
;
1676 result
->f
.prot
= PAGE_READ
| PAGE_WRITE
| PAGE_EXEC
;
1680 result
->f
.phys_addr
= address
;
1681 for (n
= 7; n
>= 0; n
--) {
1682 base
= env
->cp15
.c6_region
[n
];
1683 if ((base
& 1) == 0) {
1686 mask
= 1 << ((base
>> 1) & 0x1f);
1687 /* Keep this shift separate from the above to avoid an
1688 (undefined) << 32. */
1689 mask
= (mask
<< 1) - 1;
1690 if (((base
^ address
) & ~mask
) == 0) {
1695 fi
->type
= ARMFault_Background
;
1699 if (access_type
== MMU_INST_FETCH
) {
1700 mask
= env
->cp15
.pmsav5_insn_ap
;
1702 mask
= env
->cp15
.pmsav5_data_ap
;
1704 mask
= (mask
>> (n
* 4)) & 0xf;
1707 fi
->type
= ARMFault_Permission
;
1712 fi
->type
= ARMFault_Permission
;
1716 result
->f
.prot
= PAGE_READ
| PAGE_WRITE
;
1719 result
->f
.prot
= PAGE_READ
;
1721 result
->f
.prot
|= PAGE_WRITE
;
1725 result
->f
.prot
= PAGE_READ
| PAGE_WRITE
;
1729 fi
->type
= ARMFault_Permission
;
1733 result
->f
.prot
= PAGE_READ
;
1736 result
->f
.prot
= PAGE_READ
;
1739 /* Bad permission. */
1740 fi
->type
= ARMFault_Permission
;
1744 result
->f
.prot
|= PAGE_EXEC
;
1748 static void get_phys_addr_pmsav7_default(CPUARMState
*env
, ARMMMUIdx mmu_idx
,
1749 int32_t address
, uint8_t *prot
)
1751 if (!arm_feature(env
, ARM_FEATURE_M
)) {
1752 *prot
= PAGE_READ
| PAGE_WRITE
;
1754 case 0xF0000000 ... 0xFFFFFFFF:
1755 if (regime_sctlr(env
, mmu_idx
) & SCTLR_V
) {
1756 /* hivecs execing is ok */
1760 case 0x00000000 ... 0x7FFFFFFF:
1765 /* Default system address map for M profile cores.
1766 * The architecture specifies which regions are execute-never;
1767 * at the MPU level no other checks are defined.
1770 case 0x00000000 ... 0x1fffffff: /* ROM */
1771 case 0x20000000 ... 0x3fffffff: /* SRAM */
1772 case 0x60000000 ... 0x7fffffff: /* RAM */
1773 case 0x80000000 ... 0x9fffffff: /* RAM */
1774 *prot
= PAGE_READ
| PAGE_WRITE
| PAGE_EXEC
;
1776 case 0x40000000 ... 0x5fffffff: /* Peripheral */
1777 case 0xa0000000 ... 0xbfffffff: /* Device */
1778 case 0xc0000000 ... 0xdfffffff: /* Device */
1779 case 0xe0000000 ... 0xffffffff: /* System */
1780 *prot
= PAGE_READ
| PAGE_WRITE
;
1783 g_assert_not_reached();
1788 static bool m_is_ppb_region(CPUARMState
*env
, uint32_t address
)
1790 /* True if address is in the M profile PPB region 0xe0000000 - 0xe00fffff */
1791 return arm_feature(env
, ARM_FEATURE_M
) &&
1792 extract32(address
, 20, 12) == 0xe00;
1795 static bool m_is_system_region(CPUARMState
*env
, uint32_t address
)
1798 * True if address is in the M profile system region
1799 * 0xe0000000 - 0xffffffff
1801 return arm_feature(env
, ARM_FEATURE_M
) && extract32(address
, 29, 3) == 0x7;
1804 static bool pmsav7_use_background_region(ARMCPU
*cpu
, ARMMMUIdx mmu_idx
,
1805 bool is_secure
, bool is_user
)
1808 * Return true if we should use the default memory map as a
1809 * "background" region if there are no hits against any MPU regions.
1811 CPUARMState
*env
= &cpu
->env
;
1817 if (arm_feature(env
, ARM_FEATURE_M
)) {
1818 return env
->v7m
.mpu_ctrl
[is_secure
] & R_V7M_MPU_CTRL_PRIVDEFENA_MASK
;
1821 if (mmu_idx
== ARMMMUIdx_Stage2
) {
1825 return regime_sctlr(env
, mmu_idx
) & SCTLR_BR
;
1828 static bool get_phys_addr_pmsav7(CPUARMState
*env
, uint32_t address
,
1829 MMUAccessType access_type
, ARMMMUIdx mmu_idx
,
1830 bool secure
, GetPhysAddrResult
*result
,
1831 ARMMMUFaultInfo
*fi
)
1833 ARMCPU
*cpu
= env_archcpu(env
);
1835 bool is_user
= regime_is_user(env
, mmu_idx
);
1837 result
->f
.phys_addr
= address
;
1838 result
->f
.lg_page_size
= TARGET_PAGE_BITS
;
1841 if (regime_translation_disabled(env
, mmu_idx
, secure
) ||
1842 m_is_ppb_region(env
, address
)) {
1844 * MPU disabled or M profile PPB access: use default memory map.
1845 * The other case which uses the default memory map in the
1846 * v7M ARM ARM pseudocode is exception vector reads from the vector
1847 * table. In QEMU those accesses are done in arm_v7m_load_vector(),
1848 * which always does a direct read using address_space_ldl(), rather
1849 * than going via this function, so we don't need to check that here.
1851 get_phys_addr_pmsav7_default(env
, mmu_idx
, address
, &result
->f
.prot
);
1852 } else { /* MPU enabled */
1853 for (n
= (int)cpu
->pmsav7_dregion
- 1; n
>= 0; n
--) {
1855 uint32_t base
= env
->pmsav7
.drbar
[n
];
1856 uint32_t rsize
= extract32(env
->pmsav7
.drsr
[n
], 1, 5);
1860 if (!(env
->pmsav7
.drsr
[n
] & 0x1)) {
1865 qemu_log_mask(LOG_GUEST_ERROR
,
1866 "DRSR[%d]: Rsize field cannot be 0\n", n
);
1870 rmask
= (1ull << rsize
) - 1;
1873 qemu_log_mask(LOG_GUEST_ERROR
,
1874 "DRBAR[%d]: 0x%" PRIx32
" misaligned "
1875 "to DRSR region size, mask = 0x%" PRIx32
"\n",
1880 if (address
< base
|| address
> base
+ rmask
) {
1882 * Address not in this region. We must check whether the
1883 * region covers addresses in the same page as our address.
1884 * In that case we must not report a size that covers the
1885 * whole page for a subsequent hit against a different MPU
1886 * region or the background region, because it would result in
1887 * incorrect TLB hits for subsequent accesses to addresses that
1888 * are in this MPU region.
1890 if (ranges_overlap(base
, rmask
,
1891 address
& TARGET_PAGE_MASK
,
1892 TARGET_PAGE_SIZE
)) {
1893 result
->f
.lg_page_size
= 0;
1898 /* Region matched */
1900 if (rsize
>= 8) { /* no subregions for regions < 256 bytes */
1902 uint32_t srdis_mask
;
1904 rsize
-= 3; /* sub region size (power of 2) */
1905 snd
= ((address
- base
) >> rsize
) & 0x7;
1906 srdis
= extract32(env
->pmsav7
.drsr
[n
], snd
+ 8, 1);
1908 srdis_mask
= srdis
? 0x3 : 0x0;
1909 for (i
= 2; i
<= 8 && rsize
< TARGET_PAGE_BITS
; i
*= 2) {
1911 * This will check in groups of 2, 4 and then 8, whether
1912 * the subregion bits are consistent. rsize is incremented
1913 * back up to give the region size, considering consistent
1914 * adjacent subregions as one region. Stop testing if rsize
1915 * is already big enough for an entire QEMU page.
1917 int snd_rounded
= snd
& ~(i
- 1);
1918 uint32_t srdis_multi
= extract32(env
->pmsav7
.drsr
[n
],
1919 snd_rounded
+ 8, i
);
1920 if (srdis_mask
^ srdis_multi
) {
1923 srdis_mask
= (srdis_mask
<< i
) | srdis_mask
;
1930 if (rsize
< TARGET_PAGE_BITS
) {
1931 result
->f
.lg_page_size
= rsize
;
1936 if (n
== -1) { /* no hits */
1937 if (!pmsav7_use_background_region(cpu
, mmu_idx
, secure
, is_user
)) {
1938 /* background fault */
1939 fi
->type
= ARMFault_Background
;
1942 get_phys_addr_pmsav7_default(env
, mmu_idx
, address
,
1944 } else { /* a MPU hit! */
1945 uint32_t ap
= extract32(env
->pmsav7
.dracr
[n
], 8, 3);
1946 uint32_t xn
= extract32(env
->pmsav7
.dracr
[n
], 12, 1);
1948 if (m_is_system_region(env
, address
)) {
1949 /* System space is always execute never */
1953 if (is_user
) { /* User mode AP bit decoding */
1958 break; /* no access */
1960 result
->f
.prot
|= PAGE_WRITE
;
1964 result
->f
.prot
|= PAGE_READ
| PAGE_EXEC
;
1967 /* for v7M, same as 6; for R profile a reserved value */
1968 if (arm_feature(env
, ARM_FEATURE_M
)) {
1969 result
->f
.prot
|= PAGE_READ
| PAGE_EXEC
;
1974 qemu_log_mask(LOG_GUEST_ERROR
,
1975 "DRACR[%d]: Bad value for AP bits: 0x%"
1976 PRIx32
"\n", n
, ap
);
1978 } else { /* Priv. mode AP bits decoding */
1981 break; /* no access */
1985 result
->f
.prot
|= PAGE_WRITE
;
1989 result
->f
.prot
|= PAGE_READ
| PAGE_EXEC
;
1992 /* for v7M, same as 6; for R profile a reserved value */
1993 if (arm_feature(env
, ARM_FEATURE_M
)) {
1994 result
->f
.prot
|= PAGE_READ
| PAGE_EXEC
;
1999 qemu_log_mask(LOG_GUEST_ERROR
,
2000 "DRACR[%d]: Bad value for AP bits: 0x%"
2001 PRIx32
"\n", n
, ap
);
2007 result
->f
.prot
&= ~PAGE_EXEC
;
2012 fi
->type
= ARMFault_Permission
;
2014 return !(result
->f
.prot
& (1 << access_type
));
2017 static uint32_t *regime_rbar(CPUARMState
*env
, ARMMMUIdx mmu_idx
,
2020 if (regime_el(env
, mmu_idx
) == 2) {
2021 return env
->pmsav8
.hprbar
;
2023 return env
->pmsav8
.rbar
[secure
];
2027 static uint32_t *regime_rlar(CPUARMState
*env
, ARMMMUIdx mmu_idx
,
2030 if (regime_el(env
, mmu_idx
) == 2) {
2031 return env
->pmsav8
.hprlar
;
2033 return env
->pmsav8
.rlar
[secure
];
2037 bool pmsav8_mpu_lookup(CPUARMState
*env
, uint32_t address
,
2038 MMUAccessType access_type
, ARMMMUIdx mmu_idx
,
2039 bool secure
, GetPhysAddrResult
*result
,
2040 ARMMMUFaultInfo
*fi
, uint32_t *mregion
)
2043 * Perform a PMSAv8 MPU lookup (without also doing the SAU check
2044 * that a full phys-to-virt translation does).
2045 * mregion is (if not NULL) set to the region number which matched,
2046 * or -1 if no region number is returned (MPU off, address did not
2047 * hit a region, address hit in multiple regions).
2048 * If the region hit doesn't cover the entire TARGET_PAGE the address
2049 * is within, then we set the result page_size to 1 to force the
2050 * memory system to use a subpage.
2052 ARMCPU
*cpu
= env_archcpu(env
);
2053 bool is_user
= regime_is_user(env
, mmu_idx
);
2055 int matchregion
= -1;
2057 uint32_t addr_page_base
= address
& TARGET_PAGE_MASK
;
2058 uint32_t addr_page_limit
= addr_page_base
+ (TARGET_PAGE_SIZE
- 1);
2061 if (regime_el(env
, mmu_idx
) == 2) {
2062 region_counter
= cpu
->pmsav8r_hdregion
;
2064 region_counter
= cpu
->pmsav7_dregion
;
2067 result
->f
.lg_page_size
= TARGET_PAGE_BITS
;
2068 result
->f
.phys_addr
= address
;
2074 if (mmu_idx
== ARMMMUIdx_Stage2
) {
2079 * Unlike the ARM ARM pseudocode, we don't need to check whether this
2080 * was an exception vector read from the vector table (which is always
2081 * done using the default system address map), because those accesses
2082 * are done in arm_v7m_load_vector(), which always does a direct
2083 * read using address_space_ldl(), rather than going via this function.
2085 if (regime_translation_disabled(env
, mmu_idx
, secure
)) { /* MPU disabled */
2087 } else if (m_is_ppb_region(env
, address
)) {
2090 if (pmsav7_use_background_region(cpu
, mmu_idx
, secure
, is_user
)) {
2095 if (arm_feature(env
, ARM_FEATURE_M
)) {
2102 for (n
= region_counter
- 1; n
>= 0; n
--) {
2105 * Note that the base address is bits [31:x] from the register
2106 * with bits [x-1:0] all zeroes, but the limit address is bits
2107 * [31:x] from the register with bits [x:0] all ones. Where x is
2108 * 5 for Cortex-M and 6 for Cortex-R
2110 uint32_t base
= regime_rbar(env
, mmu_idx
, secure
)[n
] & ~bitmask
;
2111 uint32_t limit
= regime_rlar(env
, mmu_idx
, secure
)[n
] | bitmask
;
2113 if (!(regime_rlar(env
, mmu_idx
, secure
)[n
] & 0x1)) {
2114 /* Region disabled */
2118 if (address
< base
|| address
> limit
) {
2120 * Address not in this region. We must check whether the
2121 * region covers addresses in the same page as our address.
2122 * In that case we must not report a size that covers the
2123 * whole page for a subsequent hit against a different MPU
2124 * region or the background region, because it would result in
2125 * incorrect TLB hits for subsequent accesses to addresses that
2126 * are in this MPU region.
2128 if (limit
>= base
&&
2129 ranges_overlap(base
, limit
- base
+ 1,
2131 TARGET_PAGE_SIZE
)) {
2132 result
->f
.lg_page_size
= 0;
2137 if (base
> addr_page_base
|| limit
< addr_page_limit
) {
2138 result
->f
.lg_page_size
= 0;
2141 if (matchregion
!= -1) {
2143 * Multiple regions match -- always a failure (unlike
2144 * PMSAv7 where highest-numbered-region wins)
2146 fi
->type
= ARMFault_Permission
;
2147 if (arm_feature(env
, ARM_FEATURE_M
)) {
2159 if (arm_feature(env
, ARM_FEATURE_M
)) {
2160 fi
->type
= ARMFault_Background
;
2162 fi
->type
= ARMFault_Permission
;
2167 if (matchregion
== -1) {
2168 /* hit using the background region */
2169 get_phys_addr_pmsav7_default(env
, mmu_idx
, address
, &result
->f
.prot
);
2171 uint32_t matched_rbar
= regime_rbar(env
, mmu_idx
, secure
)[matchregion
];
2172 uint32_t matched_rlar
= regime_rlar(env
, mmu_idx
, secure
)[matchregion
];
2173 uint32_t ap
= extract32(matched_rbar
, 1, 2);
2174 uint32_t xn
= extract32(matched_rbar
, 0, 1);
2177 if (arm_feature(env
, ARM_FEATURE_V8_1M
)) {
2178 pxn
= extract32(matched_rlar
, 4, 1);
2181 if (m_is_system_region(env
, address
)) {
2182 /* System space is always execute never */
2186 if (regime_el(env
, mmu_idx
) == 2) {
2187 result
->f
.prot
= simple_ap_to_rw_prot_is_user(ap
,
2188 mmu_idx
!= ARMMMUIdx_E2
);
2190 result
->f
.prot
= simple_ap_to_rw_prot(env
, mmu_idx
, ap
);
2193 if (!arm_feature(env
, ARM_FEATURE_M
)) {
2194 uint8_t attrindx
= extract32(matched_rlar
, 1, 3);
2195 uint64_t mair
= env
->cp15
.mair_el
[regime_el(env
, mmu_idx
)];
2196 uint8_t sh
= extract32(matched_rlar
, 3, 2);
2198 if (regime_sctlr(env
, mmu_idx
) & SCTLR_WXN
&&
2199 result
->f
.prot
& PAGE_WRITE
&& mmu_idx
!= ARMMMUIdx_Stage2
) {
2203 if ((regime_el(env
, mmu_idx
) == 1) &&
2204 regime_sctlr(env
, mmu_idx
) & SCTLR_UWXN
&& ap
== 0x1) {
2208 result
->cacheattrs
.is_s2_format
= false;
2209 result
->cacheattrs
.attrs
= extract64(mair
, attrindx
* 8, 8);
2210 result
->cacheattrs
.shareability
= sh
;
2213 if (result
->f
.prot
&& !xn
&& !(pxn
&& !is_user
)) {
2214 result
->f
.prot
|= PAGE_EXEC
;
2218 *mregion
= matchregion
;
2222 fi
->type
= ARMFault_Permission
;
2223 if (arm_feature(env
, ARM_FEATURE_M
)) {
2226 return !(result
->f
.prot
& (1 << access_type
));
2229 static bool v8m_is_sau_exempt(CPUARMState
*env
,
2230 uint32_t address
, MMUAccessType access_type
)
2233 * The architecture specifies that certain address ranges are
2234 * exempt from v8M SAU/IDAU checks.
2237 (access_type
== MMU_INST_FETCH
&& m_is_system_region(env
, address
)) ||
2238 (address
>= 0xe0000000 && address
<= 0xe0002fff) ||
2239 (address
>= 0xe000e000 && address
<= 0xe000efff) ||
2240 (address
>= 0xe002e000 && address
<= 0xe002efff) ||
2241 (address
>= 0xe0040000 && address
<= 0xe0041fff) ||
2242 (address
>= 0xe00ff000 && address
<= 0xe00fffff);
2245 void v8m_security_lookup(CPUARMState
*env
, uint32_t address
,
2246 MMUAccessType access_type
, ARMMMUIdx mmu_idx
,
2247 bool is_secure
, V8M_SAttributes
*sattrs
)
2250 * Look up the security attributes for this address. Compare the
2251 * pseudocode SecurityCheck() function.
2252 * We assume the caller has zero-initialized *sattrs.
2254 ARMCPU
*cpu
= env_archcpu(env
);
2256 bool idau_exempt
= false, idau_ns
= true, idau_nsc
= true;
2257 int idau_region
= IREGION_NOTVALID
;
2258 uint32_t addr_page_base
= address
& TARGET_PAGE_MASK
;
2259 uint32_t addr_page_limit
= addr_page_base
+ (TARGET_PAGE_SIZE
- 1);
2262 IDAUInterfaceClass
*iic
= IDAU_INTERFACE_GET_CLASS(cpu
->idau
);
2263 IDAUInterface
*ii
= IDAU_INTERFACE(cpu
->idau
);
2265 iic
->check(ii
, address
, &idau_region
, &idau_exempt
, &idau_ns
,
2269 if (access_type
== MMU_INST_FETCH
&& extract32(address
, 28, 4) == 0xf) {
2270 /* 0xf0000000..0xffffffff is always S for insn fetches */
2274 if (idau_exempt
|| v8m_is_sau_exempt(env
, address
, access_type
)) {
2275 sattrs
->ns
= !is_secure
;
2279 if (idau_region
!= IREGION_NOTVALID
) {
2280 sattrs
->irvalid
= true;
2281 sattrs
->iregion
= idau_region
;
2284 switch (env
->sau
.ctrl
& 3) {
2285 case 0: /* SAU.ENABLE == 0, SAU.ALLNS == 0 */
2287 case 2: /* SAU.ENABLE == 0, SAU.ALLNS == 1 */
2290 default: /* SAU.ENABLE == 1 */
2291 for (r
= 0; r
< cpu
->sau_sregion
; r
++) {
2292 if (env
->sau
.rlar
[r
] & 1) {
2293 uint32_t base
= env
->sau
.rbar
[r
] & ~0x1f;
2294 uint32_t limit
= env
->sau
.rlar
[r
] | 0x1f;
2296 if (base
<= address
&& limit
>= address
) {
2297 if (base
> addr_page_base
|| limit
< addr_page_limit
) {
2298 sattrs
->subpage
= true;
2300 if (sattrs
->srvalid
) {
2302 * If we hit in more than one region then we must report
2303 * as Secure, not NS-Callable, with no valid region
2307 sattrs
->nsc
= false;
2308 sattrs
->sregion
= 0;
2309 sattrs
->srvalid
= false;
2312 if (env
->sau
.rlar
[r
] & 2) {
2317 sattrs
->srvalid
= true;
2318 sattrs
->sregion
= r
;
2322 * Address not in this region. We must check whether the
2323 * region covers addresses in the same page as our address.
2324 * In that case we must not report a size that covers the
2325 * whole page for a subsequent hit against a different MPU
2326 * region or the background region, because it would result
2327 * in incorrect TLB hits for subsequent accesses to
2328 * addresses that are in this MPU region.
2330 if (limit
>= base
&&
2331 ranges_overlap(base
, limit
- base
+ 1,
2333 TARGET_PAGE_SIZE
)) {
2334 sattrs
->subpage
= true;
2343 * The IDAU will override the SAU lookup results if it specifies
2344 * higher security than the SAU does.
2347 if (sattrs
->ns
|| (!idau_nsc
&& sattrs
->nsc
)) {
2349 sattrs
->nsc
= idau_nsc
;
2354 static bool get_phys_addr_pmsav8(CPUARMState
*env
, uint32_t address
,
2355 MMUAccessType access_type
, ARMMMUIdx mmu_idx
,
2356 bool secure
, GetPhysAddrResult
*result
,
2357 ARMMMUFaultInfo
*fi
)
2359 V8M_SAttributes sattrs
= {};
2362 if (arm_feature(env
, ARM_FEATURE_M_SECURITY
)) {
2363 v8m_security_lookup(env
, address
, access_type
, mmu_idx
,
2365 if (access_type
== MMU_INST_FETCH
) {
2367 * Instruction fetches always use the MMU bank and the
2368 * transaction attribute determined by the fetch address,
2369 * regardless of CPU state. This is painful for QEMU
2370 * to handle, because it would mean we need to encode
2371 * into the mmu_idx not just the (user, negpri) information
2372 * for the current security state but also that for the
2373 * other security state, which would balloon the number
2374 * of mmu_idx values needed alarmingly.
2375 * Fortunately we can avoid this because it's not actually
2376 * possible to arbitrarily execute code from memory with
2377 * the wrong security attribute: it will always generate
2378 * an exception of some kind or another, apart from the
2379 * special case of an NS CPU executing an SG instruction
2380 * in S&NSC memory. So we always just fail the translation
2381 * here and sort things out in the exception handler
2382 * (including possibly emulating an SG instruction).
2384 if (sattrs
.ns
!= !secure
) {
2386 fi
->type
= ARMFault_QEMU_NSCExec
;
2388 fi
->type
= ARMFault_QEMU_SFault
;
2390 result
->f
.lg_page_size
= sattrs
.subpage
? 0 : TARGET_PAGE_BITS
;
2391 result
->f
.phys_addr
= address
;
2397 * For data accesses we always use the MMU bank indicated
2398 * by the current CPU state, but the security attributes
2399 * might downgrade a secure access to nonsecure.
2402 result
->f
.attrs
.secure
= false;
2403 } else if (!secure
) {
2405 * NS access to S memory must fault.
2406 * Architecturally we should first check whether the
2407 * MPU information for this address indicates that we
2408 * are doing an unaligned access to Device memory, which
2409 * should generate a UsageFault instead. QEMU does not
2410 * currently check for that kind of unaligned access though.
2411 * If we added it we would need to do so as a special case
2412 * for M_FAKE_FSR_SFAULT in arm_v7m_cpu_do_interrupt().
2414 fi
->type
= ARMFault_QEMU_SFault
;
2415 result
->f
.lg_page_size
= sattrs
.subpage
? 0 : TARGET_PAGE_BITS
;
2416 result
->f
.phys_addr
= address
;
2423 ret
= pmsav8_mpu_lookup(env
, address
, access_type
, mmu_idx
, secure
,
2425 if (sattrs
.subpage
) {
2426 result
->f
.lg_page_size
= 0;
2432 * Translate from the 4-bit stage 2 representation of
2433 * memory attributes (without cache-allocation hints) to
2434 * the 8-bit representation of the stage 1 MAIR registers
2435 * (which includes allocation hints).
2437 * ref: shared/translation/attrs/S2AttrDecode()
2438 * .../S2ConvertAttrsHints()
2440 static uint8_t convert_stage2_attrs(uint64_t hcr
, uint8_t s2attrs
)
2442 uint8_t hiattr
= extract32(s2attrs
, 2, 2);
2443 uint8_t loattr
= extract32(s2attrs
, 0, 2);
2444 uint8_t hihint
= 0, lohint
= 0;
2446 if (hiattr
!= 0) { /* normal memory */
2447 if (hcr
& HCR_CD
) { /* cache disabled */
2448 hiattr
= loattr
= 1; /* non-cacheable */
2450 if (hiattr
!= 1) { /* Write-through or write-back */
2451 hihint
= 3; /* RW allocate */
2453 if (loattr
!= 1) { /* Write-through or write-back */
2454 lohint
= 3; /* RW allocate */
2459 return (hiattr
<< 6) | (hihint
<< 4) | (loattr
<< 2) | lohint
;
2463 * Combine either inner or outer cacheability attributes for normal
2464 * memory, according to table D4-42 and pseudocode procedure
2465 * CombineS1S2AttrHints() of ARM DDI 0487B.b (the ARMv8 ARM).
2467 * NB: only stage 1 includes allocation hints (RW bits), leading to
2470 static uint8_t combine_cacheattr_nibble(uint8_t s1
, uint8_t s2
)
2472 if (s1
== 4 || s2
== 4) {
2473 /* non-cacheable has precedence */
2475 } else if (extract32(s1
, 2, 2) == 0 || extract32(s1
, 2, 2) == 2) {
2476 /* stage 1 write-through takes precedence */
2478 } else if (extract32(s2
, 2, 2) == 2) {
2479 /* stage 2 write-through takes precedence, but the allocation hint
2480 * is still taken from stage 1
2482 return (2 << 2) | extract32(s1
, 0, 2);
2483 } else { /* write-back */
2489 * Combine the memory type and cacheability attributes of
2490 * s1 and s2 for the HCR_EL2.FWB == 0 case, returning the
2491 * combined attributes in MAIR_EL1 format.
2493 static uint8_t combined_attrs_nofwb(uint64_t hcr
,
2494 ARMCacheAttrs s1
, ARMCacheAttrs s2
)
2496 uint8_t s1lo
, s2lo
, s1hi
, s2hi
, s2_mair_attrs
, ret_attrs
;
2498 if (s2
.is_s2_format
) {
2499 s2_mair_attrs
= convert_stage2_attrs(hcr
, s2
.attrs
);
2501 s2_mair_attrs
= s2
.attrs
;
2504 s1lo
= extract32(s1
.attrs
, 0, 4);
2505 s2lo
= extract32(s2_mair_attrs
, 0, 4);
2506 s1hi
= extract32(s1
.attrs
, 4, 4);
2507 s2hi
= extract32(s2_mair_attrs
, 4, 4);
2509 /* Combine memory type and cacheability attributes */
2510 if (s1hi
== 0 || s2hi
== 0) {
2511 /* Device has precedence over normal */
2512 if (s1lo
== 0 || s2lo
== 0) {
2513 /* nGnRnE has precedence over anything */
2515 } else if (s1lo
== 4 || s2lo
== 4) {
2516 /* non-Reordering has precedence over Reordering */
2517 ret_attrs
= 4; /* nGnRE */
2518 } else if (s1lo
== 8 || s2lo
== 8) {
2519 /* non-Gathering has precedence over Gathering */
2520 ret_attrs
= 8; /* nGRE */
2522 ret_attrs
= 0xc; /* GRE */
2524 } else { /* Normal memory */
2525 /* Outer/inner cacheability combine independently */
2526 ret_attrs
= combine_cacheattr_nibble(s1hi
, s2hi
) << 4
2527 | combine_cacheattr_nibble(s1lo
, s2lo
);
2532 static uint8_t force_cacheattr_nibble_wb(uint8_t attr
)
2535 * Given the 4 bits specifying the outer or inner cacheability
2536 * in MAIR format, return a value specifying Normal Write-Back,
2537 * with the allocation and transient hints taken from the input
2538 * if the input specified some kind of cacheable attribute.
2540 if (attr
== 0 || attr
== 4) {
2542 * 0 == an UNPREDICTABLE encoding
2543 * 4 == Non-cacheable
2544 * Either way, force Write-Back RW allocate non-transient
2548 /* Change WriteThrough to WriteBack, keep allocation and transient hints */
2553 * Combine the memory type and cacheability attributes of
2554 * s1 and s2 for the HCR_EL2.FWB == 1 case, returning the
2555 * combined attributes in MAIR_EL1 format.
2557 static uint8_t combined_attrs_fwb(ARMCacheAttrs s1
, ARMCacheAttrs s2
)
2559 assert(s2
.is_s2_format
&& !s1
.is_s2_format
);
2563 /* Use stage 1 attributes */
2567 * Force Normal Write-Back. Note that if S1 is Normal cacheable
2568 * then we take the allocation hints from it; otherwise it is
2569 * RW allocate, non-transient.
2571 if ((s1
.attrs
& 0xf0) == 0) {
2575 /* Need to check the Inner and Outer nibbles separately */
2576 return force_cacheattr_nibble_wb(s1
.attrs
& 0xf) |
2577 force_cacheattr_nibble_wb(s1
.attrs
>> 4) << 4;
2579 /* If S1 attrs are Device, use them; otherwise Normal Non-cacheable */
2580 if ((s1
.attrs
& 0xf0) == 0) {
2585 /* Force Device, of subtype specified by S2 */
2586 return s2
.attrs
<< 2;
2589 * RESERVED values (including RES0 descriptor bit [5] being nonzero);
2590 * arbitrarily force Device.
2597 * Combine S1 and S2 cacheability/shareability attributes, per D4.5.4
2598 * and CombineS1S2Desc()
2601 * @s1: Attributes from stage 1 walk
2602 * @s2: Attributes from stage 2 walk
2604 static ARMCacheAttrs
combine_cacheattrs(uint64_t hcr
,
2605 ARMCacheAttrs s1
, ARMCacheAttrs s2
)
2608 bool tagged
= false;
2610 assert(!s1
.is_s2_format
);
2611 ret
.is_s2_format
= false;
2612 ret
.guarded
= s1
.guarded
;
2614 if (s1
.attrs
== 0xf0) {
2619 /* Combine shareability attributes (table D4-43) */
2620 if (s1
.shareability
== 2 || s2
.shareability
== 2) {
2621 /* if either are outer-shareable, the result is outer-shareable */
2622 ret
.shareability
= 2;
2623 } else if (s1
.shareability
== 3 || s2
.shareability
== 3) {
2624 /* if either are inner-shareable, the result is inner-shareable */
2625 ret
.shareability
= 3;
2627 /* both non-shareable */
2628 ret
.shareability
= 0;
2631 /* Combine memory type and cacheability attributes */
2632 if (hcr
& HCR_FWB
) {
2633 ret
.attrs
= combined_attrs_fwb(s1
, s2
);
2635 ret
.attrs
= combined_attrs_nofwb(hcr
, s1
, s2
);
2639 * Any location for which the resultant memory type is any
2640 * type of Device memory is always treated as Outer Shareable.
2641 * Any location for which the resultant memory type is Normal
2642 * Inner Non-cacheable, Outer Non-cacheable is always treated
2643 * as Outer Shareable.
2644 * TODO: FEAT_XS adds another value (0x40) also meaning iNCoNC
2646 if ((ret
.attrs
& 0xf0) == 0 || ret
.attrs
== 0x44) {
2647 ret
.shareability
= 2;
2650 /* TODO: CombineS1S2Desc does not consider transient, only WB, RWA. */
2651 if (tagged
&& ret
.attrs
== 0xff) {
2659 * MMU disabled. S1 addresses within aa64 translation regimes are
2660 * still checked for bounds -- see AArch64.S1DisabledOutput().
2662 static bool get_phys_addr_disabled(CPUARMState
*env
, target_ulong address
,
2663 MMUAccessType access_type
,
2664 ARMMMUIdx mmu_idx
, bool is_secure
,
2665 GetPhysAddrResult
*result
,
2666 ARMMMUFaultInfo
*fi
)
2668 uint8_t memattr
= 0x00; /* Device nGnRnE */
2669 uint8_t shareability
= 0; /* non-sharable */
2673 case ARMMMUIdx_Stage2
:
2674 case ARMMMUIdx_Stage2_S
:
2675 case ARMMMUIdx_Phys_NS
:
2676 case ARMMMUIdx_Phys_S
:
2680 r_el
= regime_el(env
, mmu_idx
);
2681 if (arm_el_is_aa64(env
, r_el
)) {
2682 int pamax
= arm_pamax(env_archcpu(env
));
2683 uint64_t tcr
= env
->cp15
.tcr_el
[r_el
];
2686 tbi
= aa64_va_parameter_tbi(tcr
, mmu_idx
);
2687 if (access_type
== MMU_INST_FETCH
) {
2688 tbi
&= ~aa64_va_parameter_tbid(tcr
, mmu_idx
);
2690 tbi
= (tbi
>> extract64(address
, 55, 1)) & 1;
2691 addrtop
= (tbi
? 55 : 63);
2693 if (extract64(address
, pamax
, addrtop
- pamax
+ 1) != 0) {
2694 fi
->type
= ARMFault_AddressSize
;
2701 * When TBI is disabled, we've just validated that all of the
2702 * bits above PAMax are zero, so logically we only need to
2703 * clear the top byte for TBI. But it's clearer to follow
2704 * the pseudocode set of addrdesc.paddress.
2706 address
= extract64(address
, 0, 52);
2709 /* Fill in cacheattr a-la AArch64.TranslateAddressS1Off. */
2711 uint64_t hcr
= arm_hcr_el2_eff_secstate(env
, is_secure
);
2713 if (hcr
& HCR_DCT
) {
2714 memattr
= 0xf0; /* Tagged, Normal, WB, RWA */
2716 memattr
= 0xff; /* Normal, WB, RWA */
2720 if (memattr
== 0 && access_type
== MMU_INST_FETCH
) {
2721 if (regime_sctlr(env
, mmu_idx
) & SCTLR_I
) {
2722 memattr
= 0xee; /* Normal, WT, RA, NT */
2724 memattr
= 0x44; /* Normal, NC, No */
2726 shareability
= 2; /* outer sharable */
2728 result
->cacheattrs
.is_s2_format
= false;
2732 result
->f
.phys_addr
= address
;
2733 result
->f
.prot
= PAGE_READ
| PAGE_WRITE
| PAGE_EXEC
;
2734 result
->f
.lg_page_size
= TARGET_PAGE_BITS
;
2735 result
->cacheattrs
.shareability
= shareability
;
2736 result
->cacheattrs
.attrs
= memattr
;
2740 static bool get_phys_addr_twostage(CPUARMState
*env
, S1Translate
*ptw
,
2741 target_ulong address
,
2742 MMUAccessType access_type
,
2743 GetPhysAddrResult
*result
,
2744 ARMMMUFaultInfo
*fi
)
2747 int s1_prot
, s1_lgpgsz
;
2748 bool is_secure
= ptw
->in_secure
;
2749 bool ret
, ipa_secure
;
2750 ARMCacheAttrs cacheattrs1
;
2754 ret
= get_phys_addr_with_struct(env
, ptw
, address
, access_type
, result
, fi
);
2756 /* If S1 fails, return early. */
2761 ipa
= result
->f
.phys_addr
;
2762 ipa_secure
= result
->f
.attrs
.secure
;
2764 is_el0
= ptw
->in_mmu_idx
== ARMMMUIdx_Stage1_E0
;
2765 ptw
->in_mmu_idx
= ipa_secure
? ARMMMUIdx_Stage2_S
: ARMMMUIdx_Stage2
;
2766 ptw
->in_secure
= ipa_secure
;
2767 ptw
->in_ptw_idx
= ptw_idx_for_stage_2(env
, ptw
->in_mmu_idx
);
2770 * S1 is done, now do S2 translation.
2771 * Save the stage1 results so that we may merge prot and cacheattrs later.
2773 s1_prot
= result
->f
.prot
;
2774 s1_lgpgsz
= result
->f
.lg_page_size
;
2775 cacheattrs1
= result
->cacheattrs
;
2776 memset(result
, 0, sizeof(*result
));
2778 if (arm_feature(env
, ARM_FEATURE_PMSA
)) {
2779 ret
= get_phys_addr_pmsav8(env
, ipa
, access_type
,
2780 ptw
->in_mmu_idx
, is_secure
, result
, fi
);
2782 ret
= get_phys_addr_lpae(env
, ptw
, ipa
, access_type
,
2783 is_el0
, result
, fi
);
2787 /* Combine the S1 and S2 perms. */
2788 result
->f
.prot
&= s1_prot
;
2790 /* If S2 fails, return early. */
2796 * If either S1 or S2 returned a result smaller than TARGET_PAGE_SIZE,
2797 * this means "don't put this in the TLB"; in this case, return a
2798 * result with lg_page_size == 0 to achieve that. Otherwise,
2799 * use the maximum of the S1 & S2 page size, so that invalidation
2800 * of pages > TARGET_PAGE_SIZE works correctly. (This works even though
2801 * we know the combined result permissions etc only cover the minimum
2802 * of the S1 and S2 page size, because we know that the common TLB code
2803 * never actually creates TLB entries bigger than TARGET_PAGE_SIZE,
2804 * and passing a larger page size value only affects invalidations.)
2806 if (result
->f
.lg_page_size
< TARGET_PAGE_BITS
||
2807 s1_lgpgsz
< TARGET_PAGE_BITS
) {
2808 result
->f
.lg_page_size
= 0;
2809 } else if (result
->f
.lg_page_size
< s1_lgpgsz
) {
2810 result
->f
.lg_page_size
= s1_lgpgsz
;
2813 /* Combine the S1 and S2 cache attributes. */
2814 hcr
= arm_hcr_el2_eff_secstate(env
, is_secure
);
2817 * HCR.DC forces the first stage attributes to
2818 * Normal Non-Shareable,
2819 * Inner Write-Back Read-Allocate Write-Allocate,
2820 * Outer Write-Back Read-Allocate Write-Allocate.
2821 * Do not overwrite Tagged within attrs.
2823 if (cacheattrs1
.attrs
!= 0xf0) {
2824 cacheattrs1
.attrs
= 0xff;
2826 cacheattrs1
.shareability
= 0;
2828 result
->cacheattrs
= combine_cacheattrs(hcr
, cacheattrs1
,
2829 result
->cacheattrs
);
2832 * Check if IPA translates to secure or non-secure PA space.
2833 * Note that VSTCR overrides VTCR and {N}SW overrides {N}SA.
2835 result
->f
.attrs
.secure
=
2837 && !(env
->cp15
.vstcr_el2
& (VSTCR_SA
| VSTCR_SW
))
2839 || !(env
->cp15
.vtcr_el2
& (VTCR_NSA
| VTCR_NSW
))));
2844 static bool get_phys_addr_with_struct(CPUARMState
*env
, S1Translate
*ptw
,
2845 target_ulong address
,
2846 MMUAccessType access_type
,
2847 GetPhysAddrResult
*result
,
2848 ARMMMUFaultInfo
*fi
)
2850 ARMMMUIdx mmu_idx
= ptw
->in_mmu_idx
;
2851 bool is_secure
= ptw
->in_secure
;
2852 ARMMMUIdx s1_mmu_idx
;
2855 * The page table entries may downgrade secure to non-secure, but
2856 * cannot upgrade an non-secure translation regime's attributes
2859 result
->f
.attrs
.secure
= is_secure
;
2862 case ARMMMUIdx_Phys_S
:
2863 case ARMMMUIdx_Phys_NS
:
2864 /* Checking Phys early avoids special casing later vs regime_el. */
2865 return get_phys_addr_disabled(env
, address
, access_type
, mmu_idx
,
2866 is_secure
, result
, fi
);
2868 case ARMMMUIdx_Stage1_E0
:
2869 case ARMMMUIdx_Stage1_E1
:
2870 case ARMMMUIdx_Stage1_E1_PAN
:
2871 /* First stage lookup uses second stage for ptw. */
2872 ptw
->in_ptw_idx
= is_secure
? ARMMMUIdx_Stage2_S
: ARMMMUIdx_Stage2
;
2875 case ARMMMUIdx_Stage2
:
2876 case ARMMMUIdx_Stage2_S
:
2878 * Second stage lookup uses physical for ptw; whether this is S or
2879 * NS may depend on the SW/NSW bits if this is a stage 2 lookup for
2880 * the Secure EL2&0 regime.
2882 ptw
->in_ptw_idx
= ptw_idx_for_stage_2(env
, mmu_idx
);
2885 case ARMMMUIdx_E10_0
:
2886 s1_mmu_idx
= ARMMMUIdx_Stage1_E0
;
2888 case ARMMMUIdx_E10_1
:
2889 s1_mmu_idx
= ARMMMUIdx_Stage1_E1
;
2891 case ARMMMUIdx_E10_1_PAN
:
2892 s1_mmu_idx
= ARMMMUIdx_Stage1_E1_PAN
;
2895 * Call ourselves recursively to do the stage 1 and then stage 2
2896 * translations if mmu_idx is a two-stage regime, and EL2 present.
2897 * Otherwise, a stage1+stage2 translation is just stage 1.
2899 ptw
->in_mmu_idx
= mmu_idx
= s1_mmu_idx
;
2900 if (arm_feature(env
, ARM_FEATURE_EL2
) &&
2901 !regime_translation_disabled(env
, ARMMMUIdx_Stage2
, is_secure
)) {
2902 return get_phys_addr_twostage(env
, ptw
, address
, access_type
,
2908 /* Single stage uses physical for ptw. */
2909 ptw
->in_ptw_idx
= is_secure
? ARMMMUIdx_Phys_S
: ARMMMUIdx_Phys_NS
;
2913 result
->f
.attrs
.user
= regime_is_user(env
, mmu_idx
);
2916 * Fast Context Switch Extension. This doesn't exist at all in v8.
2917 * In v7 and earlier it affects all stage 1 translations.
2919 if (address
< 0x02000000 && mmu_idx
!= ARMMMUIdx_Stage2
2920 && !arm_feature(env
, ARM_FEATURE_V8
)) {
2921 if (regime_el(env
, mmu_idx
) == 3) {
2922 address
+= env
->cp15
.fcseidr_s
;
2924 address
+= env
->cp15
.fcseidr_ns
;
2928 if (arm_feature(env
, ARM_FEATURE_PMSA
)) {
2930 result
->f
.lg_page_size
= TARGET_PAGE_BITS
;
2932 if (arm_feature(env
, ARM_FEATURE_V8
)) {
2934 ret
= get_phys_addr_pmsav8(env
, address
, access_type
, mmu_idx
,
2935 is_secure
, result
, fi
);
2936 } else if (arm_feature(env
, ARM_FEATURE_V7
)) {
2938 ret
= get_phys_addr_pmsav7(env
, address
, access_type
, mmu_idx
,
2939 is_secure
, result
, fi
);
2942 ret
= get_phys_addr_pmsav5(env
, address
, access_type
, mmu_idx
,
2943 is_secure
, result
, fi
);
2945 qemu_log_mask(CPU_LOG_MMU
, "PMSA MPU lookup for %s at 0x%08" PRIx32
2946 " mmu_idx %u -> %s (prot %c%c%c)\n",
2947 access_type
== MMU_DATA_LOAD
? "reading" :
2948 (access_type
== MMU_DATA_STORE
? "writing" : "execute"),
2949 (uint32_t)address
, mmu_idx
,
2950 ret
? "Miss" : "Hit",
2951 result
->f
.prot
& PAGE_READ
? 'r' : '-',
2952 result
->f
.prot
& PAGE_WRITE
? 'w' : '-',
2953 result
->f
.prot
& PAGE_EXEC
? 'x' : '-');
2958 /* Definitely a real MMU, not an MPU */
2960 if (regime_translation_disabled(env
, mmu_idx
, is_secure
)) {
2961 return get_phys_addr_disabled(env
, address
, access_type
, mmu_idx
,
2962 is_secure
, result
, fi
);
2965 if (regime_using_lpae_format(env
, mmu_idx
)) {
2966 return get_phys_addr_lpae(env
, ptw
, address
, access_type
, false,
2968 } else if (arm_feature(env
, ARM_FEATURE_V7
) ||
2969 regime_sctlr(env
, mmu_idx
) & SCTLR_XP
) {
2970 return get_phys_addr_v6(env
, ptw
, address
, access_type
, result
, fi
);
2972 return get_phys_addr_v5(env
, ptw
, address
, access_type
, result
, fi
);
2976 bool get_phys_addr_with_secure(CPUARMState
*env
, target_ulong address
,
2977 MMUAccessType access_type
, ARMMMUIdx mmu_idx
,
2978 bool is_secure
, GetPhysAddrResult
*result
,
2979 ARMMMUFaultInfo
*fi
)
2982 .in_mmu_idx
= mmu_idx
,
2983 .in_secure
= is_secure
,
2985 return get_phys_addr_with_struct(env
, &ptw
, address
, access_type
,
2989 bool get_phys_addr(CPUARMState
*env
, target_ulong address
,
2990 MMUAccessType access_type
, ARMMMUIdx mmu_idx
,
2991 GetPhysAddrResult
*result
, ARMMMUFaultInfo
*fi
)
2996 case ARMMMUIdx_E10_0
:
2997 case ARMMMUIdx_E10_1
:
2998 case ARMMMUIdx_E10_1_PAN
:
2999 case ARMMMUIdx_E20_0
:
3000 case ARMMMUIdx_E20_2
:
3001 case ARMMMUIdx_E20_2_PAN
:
3002 case ARMMMUIdx_Stage1_E0
:
3003 case ARMMMUIdx_Stage1_E1
:
3004 case ARMMMUIdx_Stage1_E1_PAN
:
3006 is_secure
= arm_is_secure_below_el3(env
);
3008 case ARMMMUIdx_Stage2
:
3009 case ARMMMUIdx_Phys_NS
:
3010 case ARMMMUIdx_MPrivNegPri
:
3011 case ARMMMUIdx_MUserNegPri
:
3012 case ARMMMUIdx_MPriv
:
3013 case ARMMMUIdx_MUser
:
3017 case ARMMMUIdx_Stage2_S
:
3018 case ARMMMUIdx_Phys_S
:
3019 case ARMMMUIdx_MSPrivNegPri
:
3020 case ARMMMUIdx_MSUserNegPri
:
3021 case ARMMMUIdx_MSPriv
:
3022 case ARMMMUIdx_MSUser
:
3026 g_assert_not_reached();
3028 return get_phys_addr_with_secure(env
, address
, access_type
, mmu_idx
,
3029 is_secure
, result
, fi
);
3032 hwaddr
arm_cpu_get_phys_page_attrs_debug(CPUState
*cs
, vaddr addr
,
3035 ARMCPU
*cpu
= ARM_CPU(cs
);
3036 CPUARMState
*env
= &cpu
->env
;
3038 .in_mmu_idx
= arm_mmu_idx(env
),
3039 .in_secure
= arm_is_secure(env
),
3042 GetPhysAddrResult res
= {};
3043 ARMMMUFaultInfo fi
= {};
3046 ret
= get_phys_addr_with_struct(env
, &ptw
, addr
, MMU_DATA_LOAD
, &res
, &fi
);
3047 *attrs
= res
.f
.attrs
;
3052 return res
.f
.phys_addr
;