diff mbox series

[RFC,v13,12/80] target/arm: move physical address translation to cpu-mmu

Message ID 20210414112650.18003-13-cfontana@suse.de (mailing list archive)
State New, archived
Headers show
Series arm cleanup experiment for kvm-only build | expand

Commit Message

Claudio Fontana April 14, 2021, 11:25 a.m. UTC
get_phys_addr is needed for KVM too, and in turn it requires
the aa64_va_parameter* family of functions.

Create cpu-mmu and cpu-mmu-sysemu to store these and
other mmu-related functions.

Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
---
 target/arm/cpu-mmu.h               |  119 ++
 target/arm/cpu.h                   |    3 -
 target/arm/internals.h             |   34 -
 target/arm/cpu-mmu-sysemu.c        | 2307 ++++++++++++++++++++++++++
 target/arm/cpu-mmu.c               |  124 ++
 target/arm/cpu.c                   |    1 +
 target/arm/tcg/helper.c            | 2442 +---------------------------
 target/arm/tcg/pauth_helper.c      |    2 +-
 target/arm/tcg/sysemu/m_helper.c   |    2 +-
 target/arm/tcg/sysemu/tlb_helper.c |    1 +
 target/arm/meson.build             |    2 +
 11 files changed, 2557 insertions(+), 2480 deletions(-)
 create mode 100644 target/arm/cpu-mmu.h
 create mode 100644 target/arm/cpu-mmu-sysemu.c
 create mode 100644 target/arm/cpu-mmu.c
diff mbox series

Patch

diff --git a/target/arm/cpu-mmu.h b/target/arm/cpu-mmu.h
new file mode 100644
index 0000000000..01b060613a
--- /dev/null
+++ b/target/arm/cpu-mmu.h
@@ -0,0 +1,119 @@ 
+/*
+ * QEMU ARM CPU address translation related code
+ *
+ * Copyright (c) 2012 SUSE LINUX Products GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see
+ * <http://www.gnu.org/licenses/gpl-2.0.html>
+ */
+#ifndef ARM_CPU_MMU_H
+#define ARM_CPU_MMU_H
+
+#include "cpu.h"
+#include "internals.h"
+
+/*
+ * Parameters of a given virtual address, as extracted from the
+ * translation control register (TCR) for a given regime.
+ */
+typedef struct ARMVAParameters {
+    unsigned tsz    : 8;
+    unsigned select : 1;
+    bool tbi        : 1;
+    bool epd        : 1;
+    bool hpd        : 1;
+    bool using16k   : 1;
+    bool using64k   : 1;
+} ARMVAParameters;
+
+/* cpu-mmu.c */
+
+int aa64_va_parameter_tbi(uint64_t tcr, ARMMMUIdx mmu_idx);
+int aa64_va_parameter_tbid(uint64_t tcr, ARMMMUIdx mmu_idx);
+int aa64_va_parameter_tcma(uint64_t tcr, ARMMMUIdx mmu_idx);
+ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va,
+                                   ARMMMUIdx mmu_idx, bool data);
+
+/* Return the SCTLR value which controls this address translation regime */
+static inline uint64_t regime_sctlr(CPUARMState *env, ARMMMUIdx mmu_idx)
+{
+    return env->cp15.sctlr_el[regime_el(env, mmu_idx)];
+}
+
+/*
+ * Convert a possible stage1+2 MMU index into the appropriate
+ * stage 1 MMU index
+ */
+static inline ARMMMUIdx stage_1_mmu_idx(ARMMMUIdx mmu_idx)
+{
+    switch (mmu_idx) {
+    case ARMMMUIdx_SE10_0:
+        return ARMMMUIdx_Stage1_SE0;
+    case ARMMMUIdx_SE10_1:
+        return ARMMMUIdx_Stage1_SE1;
+    case ARMMMUIdx_SE10_1_PAN:
+        return ARMMMUIdx_Stage1_SE1_PAN;
+    case ARMMMUIdx_E10_0:
+        return ARMMMUIdx_Stage1_E0;
+    case ARMMMUIdx_E10_1:
+        return ARMMMUIdx_Stage1_E1;
+    case ARMMMUIdx_E10_1_PAN:
+        return ARMMMUIdx_Stage1_E1_PAN;
+    default:
+        return mmu_idx;
+    }
+}
+
+/* Return true if the translation regime is using LPAE format page tables */
+static inline bool regime_using_lpae_format(CPUARMState *env,
+                                            ARMMMUIdx mmu_idx)
+{
+    int el = regime_el(env, mmu_idx);
+    if (el == 2 || arm_el_is_aa64(env, el)) {
+        return true;
+    }
+    if (arm_feature(env, ARM_FEATURE_LPAE)
+        && (regime_tcr(env, mmu_idx)->raw_tcr & TTBCR_EAE)) {
+        return true;
+    }
+    return false;
+}
+
+#ifndef CONFIG_USER_ONLY
+
+/* cpu-mmu-sysemu.c */
+
+void v8m_security_lookup(CPUARMState *env, uint32_t address,
+                         MMUAccessType access_type, ARMMMUIdx mmu_idx,
+                         V8M_SAttributes *sattrs);
+
+bool pmsav8_mpu_lookup(CPUARMState *env, uint32_t address,
+                       MMUAccessType access_type, ARMMMUIdx mmu_idx,
+                       hwaddr *phys_ptr, MemTxAttrs *txattrs,
+                       int *prot, bool *is_subpage,
+                       ARMMMUFaultInfo *fi, uint32_t *mregion);
+
+bool get_phys_addr(CPUARMState *env, target_ulong address,
+                   MMUAccessType access_type, ARMMMUIdx mmu_idx,
+                   hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
+                   target_ulong *page_size,
+                   ARMMMUFaultInfo *fi, ARMCacheAttrs *cacheattrs)
+    __attribute__((nonnull));
+
+hwaddr arm_cpu_get_phys_page_attrs_debug(CPUState *cs, vaddr addr,
+                                         MemTxAttrs *attrs);
+
+#endif /* !CONFIG_USER_ONLY */
+
+#endif /* ARM_CPU_MMU_H */
diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index 193a49ec7f..7877d5417f 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -1027,9 +1027,6 @@  void arm_cpu_do_interrupt(CPUState *cpu);
 void arm_v7m_cpu_do_interrupt(CPUState *cpu);
 bool arm_cpu_exec_interrupt(CPUState *cpu, int int_req);
 
-hwaddr arm_cpu_get_phys_page_attrs_debug(CPUState *cpu, vaddr addr,
-                                         MemTxAttrs *attrs);
-
 int arm_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
 int arm_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
 
diff --git a/target/arm/internals.h b/target/arm/internals.h
index 479dc10463..e137bb0ac0 100644
--- a/target/arm/internals.h
+++ b/target/arm/internals.h
@@ -1021,23 +1021,6 @@  static inline uint32_t aarch64_pstate_valid_mask(const ARMISARegisters *id)
     return valid;
 }
 
-/*
- * Parameters of a given virtual address, as extracted from the
- * translation control register (TCR) for a given regime.
- */
-typedef struct ARMVAParameters {
-    unsigned tsz    : 8;
-    unsigned select : 1;
-    bool tbi        : 1;
-    bool epd        : 1;
-    bool hpd        : 1;
-    bool using16k   : 1;
-    bool using64k   : 1;
-} ARMVAParameters;
-
-ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va,
-                                   ARMMMUIdx mmu_idx, bool data);
-
 static inline int exception_target_el(CPUARMState *env)
 {
     int target_el = MAX(1, arm_current_el(env));
@@ -1085,29 +1068,12 @@  typedef struct V8M_SAttributes {
     bool irvalid;
 } V8M_SAttributes;
 
-void v8m_security_lookup(CPUARMState *env, uint32_t address,
-                         MMUAccessType access_type, ARMMMUIdx mmu_idx,
-                         V8M_SAttributes *sattrs);
-
-bool pmsav8_mpu_lookup(CPUARMState *env, uint32_t address,
-                       MMUAccessType access_type, ARMMMUIdx mmu_idx,
-                       hwaddr *phys_ptr, MemTxAttrs *txattrs,
-                       int *prot, bool *is_subpage,
-                       ARMMMUFaultInfo *fi, uint32_t *mregion);
-
 /* Cacheability and shareability attributes for a memory access */
 typedef struct ARMCacheAttrs {
     unsigned int attrs:8; /* as in the MAIR register encoding */
     unsigned int shareability:2; /* as in the SH field of the VMSAv8-64 PTEs */
 } ARMCacheAttrs;
 
-bool get_phys_addr(CPUARMState *env, target_ulong address,
-                   MMUAccessType access_type, ARMMMUIdx mmu_idx,
-                   hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
-                   target_ulong *page_size,
-                   ARMMMUFaultInfo *fi, ARMCacheAttrs *cacheattrs)
-    __attribute__((nonnull));
-
 void arm_log_exception(int idx);
 
 #endif /* !CONFIG_USER_ONLY */
diff --git a/target/arm/cpu-mmu-sysemu.c b/target/arm/cpu-mmu-sysemu.c
new file mode 100644
index 0000000000..9d4735a190
--- /dev/null
+++ b/target/arm/cpu-mmu-sysemu.c
@@ -0,0 +1,2307 @@ 
+/*
+ * QEMU ARM CPU address translation related code (sysemu-only)
+ *
+ * Copyright (c) 2012 SUSE LINUX Products GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see
+ * <http://www.gnu.org/licenses/gpl-2.0.html>
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/log.h"
+
+#include "target/arm/idau.h"
+#include "qemu/range.h"
+#include "cpu-mmu.h"
+
+static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address,
+                               MMUAccessType access_type, ARMMMUIdx mmu_idx,
+                               bool s1_is_el0,
+                               hwaddr *phys_ptr, MemTxAttrs *txattrs, int *prot,
+                               target_ulong *page_size_ptr,
+                               ARMMMUFaultInfo *fi, ARMCacheAttrs *cacheattrs)
+    __attribute__((nonnull));
+
+/* Return true if the specified stage of address translation is disabled */
+static inline bool regime_translation_disabled(CPUARMState *env,
+                                               ARMMMUIdx mmu_idx)
+{
+    uint64_t hcr_el2;
+
+    if (arm_feature(env, ARM_FEATURE_M)) {
+        switch (env->v7m.mpu_ctrl[regime_is_secure(env, mmu_idx)] &
+                (R_V7M_MPU_CTRL_ENABLE_MASK | R_V7M_MPU_CTRL_HFNMIENA_MASK)) {
+        case R_V7M_MPU_CTRL_ENABLE_MASK:
+            /* Enabled, but not for HardFault and NMI */
+            return mmu_idx & ARM_MMU_IDX_M_NEGPRI;
+        case R_V7M_MPU_CTRL_ENABLE_MASK | R_V7M_MPU_CTRL_HFNMIENA_MASK:
+            /* Enabled for all cases */
+            return false;
+        case 0:
+        default:
+            /*
+             * HFNMIENA set and ENABLE clear is UNPREDICTABLE, but
+             * we warned about that in armv7m_nvic.c when the guest set it.
+             */
+            return true;
+        }
+    }
+
+    hcr_el2 = arm_hcr_el2_eff(env);
+
+    if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
+        /* HCR.DC means HCR.VM behaves as 1 */
+        return (hcr_el2 & (HCR_DC | HCR_VM)) == 0;
+    }
+
+    if (hcr_el2 & HCR_TGE) {
+        /* TGE means that NS EL0/1 act as if SCTLR_EL1.M is zero */
+        if (!regime_is_secure(env, mmu_idx) && regime_el(env, mmu_idx) == 1) {
+            return true;
+        }
+    }
+
+    if ((hcr_el2 & HCR_DC) && arm_mmu_idx_is_stage1_of_2(mmu_idx)) {
+        /* HCR.DC means SCTLR_EL1.M behaves as 0 */
+        return true;
+    }
+
+    return (regime_sctlr(env, mmu_idx) & SCTLR_M) == 0;
+}
+
+static inline bool regime_translation_big_endian(CPUARMState *env,
+                                                 ARMMMUIdx mmu_idx)
+{
+    return (regime_sctlr(env, mmu_idx) & SCTLR_EE) != 0;
+}
+
+/* Return the TTBR associated with this translation regime */
+static inline uint64_t regime_ttbr(CPUARMState *env, ARMMMUIdx mmu_idx,
+                                   int ttbrn)
+{
+    if (mmu_idx == ARMMMUIdx_Stage2) {
+        return env->cp15.vttbr_el2;
+    }
+    if (mmu_idx == ARMMMUIdx_Stage2_S) {
+        return env->cp15.vsttbr_el2;
+    }
+    if (ttbrn == 0) {
+        return env->cp15.ttbr0_el[regime_el(env, mmu_idx)];
+    } else {
+        return env->cp15.ttbr1_el[regime_el(env, mmu_idx)];
+    }
+}
+
+static inline bool regime_is_user(CPUARMState *env, ARMMMUIdx mmu_idx)
+{
+    switch (mmu_idx) {
+    case ARMMMUIdx_SE10_0:
+    case ARMMMUIdx_E20_0:
+    case ARMMMUIdx_SE20_0:
+    case ARMMMUIdx_Stage1_E0:
+    case ARMMMUIdx_Stage1_SE0:
+    case ARMMMUIdx_MUser:
+    case ARMMMUIdx_MSUser:
+    case ARMMMUIdx_MUserNegPri:
+    case ARMMMUIdx_MSUserNegPri:
+        return true;
+    default:
+        return false;
+    case ARMMMUIdx_E10_0:
+    case ARMMMUIdx_E10_1:
+    case ARMMMUIdx_E10_1_PAN:
+        g_assert_not_reached();
+    }
+}
+
+/*
+ * Translate section/page access permissions to page
+ * R/W protection flags
+ *
+ * @env:         CPUARMState
+ * @mmu_idx:     MMU index indicating required translation regime
+ * @ap:          The 3-bit access permissions (AP[2:0])
+ * @domain_prot: The 2-bit domain access permissions
+ */
+static inline int ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx,
+                                int ap, int domain_prot)
+{
+    bool is_user = regime_is_user(env, mmu_idx);
+
+    if (domain_prot == 3) {
+        return PAGE_READ | PAGE_WRITE;
+    }
+
+    switch (ap) {
+    case 0:
+        if (arm_feature(env, ARM_FEATURE_V7)) {
+            return 0;
+        }
+        switch (regime_sctlr(env, mmu_idx) & (SCTLR_S | SCTLR_R)) {
+        case SCTLR_S:
+            return is_user ? 0 : PAGE_READ;
+        case SCTLR_R:
+            return PAGE_READ;
+        default:
+            return 0;
+        }
+    case 1:
+        return is_user ? 0 : PAGE_READ | PAGE_WRITE;
+    case 2:
+        if (is_user) {
+            return PAGE_READ;
+        } else {
+            return PAGE_READ | PAGE_WRITE;
+        }
+    case 3:
+        return PAGE_READ | PAGE_WRITE;
+    case 4: /* Reserved.  */
+        return 0;
+    case 5:
+        return is_user ? 0 : PAGE_READ;
+    case 6:
+        return PAGE_READ;
+    case 7:
+        if (!arm_feature(env, ARM_FEATURE_V6K)) {
+            return 0;
+        }
+        return PAGE_READ;
+    default:
+        g_assert_not_reached();
+    }
+}
+
+/*
+ * Translate section/page access permissions to page
+ * R/W protection flags.
+ *
+ * @ap:      The 2-bit simple AP (AP[2:1])
+ * @is_user: TRUE if accessing from PL0
+ */
+static inline int simple_ap_to_rw_prot_is_user(int ap, bool is_user)
+{
+    switch (ap) {
+    case 0:
+        return is_user ? 0 : PAGE_READ | PAGE_WRITE;
+    case 1:
+        return PAGE_READ | PAGE_WRITE;
+    case 2:
+        return is_user ? 0 : PAGE_READ;
+    case 3:
+        return PAGE_READ;
+    default:
+        g_assert_not_reached();
+    }
+}
+
+static inline int
+simple_ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx, int ap)
+{
+    return simple_ap_to_rw_prot_is_user(ap, regime_is_user(env, mmu_idx));
+}
+
+/*
+ * Translate S2 section/page access permissions to protection flags
+ *
+ * @env:     CPUARMState
+ * @s2ap:    The 2-bit stage2 access permissions (S2AP)
+ * @xn:      XN (execute-never) bits
+ * @s1_is_el0: true if this is S2 of an S1+2 walk for EL0
+ */
+static int get_S2prot(CPUARMState *env, int s2ap, int xn, bool s1_is_el0)
+{
+    int prot = 0;
+
+    if (s2ap & 1) {
+        prot |= PAGE_READ;
+    }
+    if (s2ap & 2) {
+        prot |= PAGE_WRITE;
+    }
+
+    if (cpu_isar_feature(any_tts2uxn, env_archcpu(env))) {
+        switch (xn) {
+        case 0:
+            prot |= PAGE_EXEC;
+            break;
+        case 1:
+            if (s1_is_el0) {
+                prot |= PAGE_EXEC;
+            }
+            break;
+        case 2:
+            break;
+        case 3:
+            if (!s1_is_el0) {
+                prot |= PAGE_EXEC;
+            }
+            break;
+        default:
+            g_assert_not_reached();
+        }
+    } else {
+        if (!extract32(xn, 1, 1)) {
+            if (arm_el_is_aa64(env, 2) || prot & PAGE_READ) {
+                prot |= PAGE_EXEC;
+            }
+        }
+    }
+    return prot;
+}
+
+/*
+ * Translate section/page access permissions to protection flags
+ *
+ * @env:     CPUARMState
+ * @mmu_idx: MMU index indicating required translation regime
+ * @is_aa64: TRUE if AArch64
+ * @ap:      The 2-bit simple AP (AP[2:1])
+ * @ns:      NS (non-secure) bit
+ * @xn:      XN (execute-never) bit
+ * @pxn:     PXN (privileged execute-never) bit
+ */
+static int get_S1prot(CPUARMState *env, ARMMMUIdx mmu_idx, bool is_aa64,
+                      int ap, int ns, int xn, int pxn)
+{
+    bool is_user = regime_is_user(env, mmu_idx);
+    int prot_rw, user_rw;
+    bool have_wxn;
+    int wxn = 0;
+
+    assert(mmu_idx != ARMMMUIdx_Stage2);
+    assert(mmu_idx != ARMMMUIdx_Stage2_S);
+
+    user_rw = simple_ap_to_rw_prot_is_user(ap, true);
+    if (is_user) {
+        prot_rw = user_rw;
+    } else {
+        if (user_rw && regime_is_pan(env, mmu_idx)) {
+            /* PAN forbids data accesses but doesn't affect insn fetch */
+            prot_rw = 0;
+        } else {
+            prot_rw = simple_ap_to_rw_prot_is_user(ap, false);
+        }
+    }
+
+    if (ns && arm_is_secure(env) && (env->cp15.scr_el3 & SCR_SIF)) {
+        return prot_rw;
+    }
+
+    /*
+     * TODO have_wxn should be replaced with
+     *   ARM_FEATURE_V8 || (ARM_FEATURE_V7 && ARM_FEATURE_EL2)
+     * when ARM_FEATURE_EL2 starts getting set. For now we assume all LPAE
+     * compatible processors have EL2, which is required for [U]WXN.
+     */
+    have_wxn = arm_feature(env, ARM_FEATURE_LPAE);
+
+    if (have_wxn) {
+        wxn = regime_sctlr(env, mmu_idx) & SCTLR_WXN;
+    }
+
+    if (is_aa64) {
+        if (regime_has_2_ranges(mmu_idx) && !is_user) {
+            xn = pxn || (user_rw & PAGE_WRITE);
+        }
+    } else if (arm_feature(env, ARM_FEATURE_V7)) {
+        switch (regime_el(env, mmu_idx)) {
+        case 1:
+        case 3:
+            if (is_user) {
+                xn = xn || !(user_rw & PAGE_READ);
+            } else {
+                int uwxn = 0;
+                if (have_wxn) {
+                    uwxn = regime_sctlr(env, mmu_idx) & SCTLR_UWXN;
+                }
+                xn = xn || !(prot_rw & PAGE_READ) || pxn ||
+                     (uwxn && (user_rw & PAGE_WRITE));
+            }
+            break;
+        case 2:
+            break;
+        }
+    } else {
+        xn = wxn = 0;
+    }
+
+    if (xn || (wxn && (prot_rw & PAGE_WRITE))) {
+        return prot_rw;
+    }
+    return prot_rw | PAGE_EXEC;
+}
+
+static bool get_level1_table_address(CPUARMState *env, ARMMMUIdx mmu_idx,
+                                     uint32_t *table, uint32_t address)
+{
+    /* Note that we can only get here for an AArch32 PL0/PL1 lookup */
+    TCR *tcr = regime_tcr(env, mmu_idx);
+
+    if (address & tcr->mask) {
+        if (tcr->raw_tcr & TTBCR_PD1) {
+            /* Translation table walk disabled for TTBR1 */
+            return false;
+        }
+        *table = regime_ttbr(env, mmu_idx, 1) & 0xffffc000;
+    } else {
+        if (tcr->raw_tcr & TTBCR_PD0) {
+            /* Translation table walk disabled for TTBR0 */
+            return false;
+        }
+        *table = regime_ttbr(env, mmu_idx, 0) & tcr->base_mask;
+    }
+    *table |= (address >> 18) & 0x3ffc;
+    return true;
+}
+
+/* Translate a S1 pagetable walk through S2 if needed.  */
+static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx,
+                               hwaddr addr, bool *is_secure,
+                               ARMMMUFaultInfo *fi)
+{
+    if (arm_mmu_idx_is_stage1_of_2(mmu_idx) &&
+        !regime_translation_disabled(env, ARMMMUIdx_Stage2)) {
+        target_ulong s2size;
+        hwaddr s2pa;
+        int s2prot;
+        int ret;
+        ARMMMUIdx s2_mmu_idx = *is_secure ? ARMMMUIdx_Stage2_S
+                                          : ARMMMUIdx_Stage2;
+        ARMCacheAttrs cacheattrs = {};
+        MemTxAttrs txattrs = {};
+
+        ret = get_phys_addr_lpae(env, addr, MMU_DATA_LOAD, s2_mmu_idx, false,
+                                 &s2pa, &txattrs, &s2prot, &s2size, fi,
+                                 &cacheattrs);
+        if (ret) {
+            assert(fi->type != ARMFault_None);
+            fi->s2addr = addr;
+            fi->stage2 = true;
+            fi->s1ptw = true;
+            fi->s1ns = !*is_secure;
+            return ~0;
+        }
+        if ((arm_hcr_el2_eff(env) & HCR_PTW) &&
+            (cacheattrs.attrs & 0xf0) == 0) {
+            /*
+             * PTW set and S1 walk touched S2 Device memory:
+             * generate Permission fault.
+             */
+            fi->type = ARMFault_Permission;
+            fi->s2addr = addr;
+            fi->stage2 = true;
+            fi->s1ptw = true;
+            fi->s1ns = !*is_secure;
+            return ~0;
+        }
+
+        if (arm_is_secure_below_el3(env)) {
+            /* Check if page table walk is to secure or non-secure PA space. */
+            if (*is_secure) {
+                *is_secure = !(env->cp15.vstcr_el2.raw_tcr & VSTCR_SW);
+            } else {
+                *is_secure = !(env->cp15.vtcr_el2.raw_tcr & VTCR_NSW);
+            }
+        } else {
+            assert(!*is_secure);
+        }
+
+        addr = s2pa;
+    }
+    return addr;
+}
+
+/* All loads done in the course of a page table walk go through here. */
+static uint32_t arm_ldl_ptw(CPUState *cs, hwaddr addr, bool is_secure,
+                            ARMMMUIdx mmu_idx, ARMMMUFaultInfo *fi)
+{
+    ARMCPU *cpu = ARM_CPU(cs);
+    CPUARMState *env = &cpu->env;
+    MemTxAttrs attrs = {};
+    MemTxResult result = MEMTX_OK;
+    AddressSpace *as;
+    uint32_t data;
+
+    addr = S1_ptw_translate(env, mmu_idx, addr, &is_secure, fi);
+    attrs.secure = is_secure;
+    as = arm_addressspace(cs, attrs);
+    if (fi->s1ptw) {
+        return 0;
+    }
+    if (regime_translation_big_endian(env, mmu_idx)) {
+        data = address_space_ldl_be(as, addr, attrs, &result);
+    } else {
+        data = address_space_ldl_le(as, addr, attrs, &result);
+    }
+    if (result == MEMTX_OK) {
+        return data;
+    }
+    fi->type = ARMFault_SyncExternalOnWalk;
+    fi->ea = arm_extabort_type(result);
+    return 0;
+}
+
+static uint64_t arm_ldq_ptw(CPUState *cs, hwaddr addr, bool is_secure,
+                            ARMMMUIdx mmu_idx, ARMMMUFaultInfo *fi)
+{
+    ARMCPU *cpu = ARM_CPU(cs);
+    CPUARMState *env = &cpu->env;
+    MemTxAttrs attrs = {};
+    MemTxResult result = MEMTX_OK;
+    AddressSpace *as;
+    uint64_t data;
+
+    addr = S1_ptw_translate(env, mmu_idx, addr, &is_secure, fi);
+    attrs.secure = is_secure;
+    as = arm_addressspace(cs, attrs);
+    if (fi->s1ptw) {
+        return 0;
+    }
+    if (regime_translation_big_endian(env, mmu_idx)) {
+        data = address_space_ldq_be(as, addr, attrs, &result);
+    } else {
+        data = address_space_ldq_le(as, addr, attrs, &result);
+    }
+    if (result == MEMTX_OK) {
+        return data;
+    }
+    fi->type = ARMFault_SyncExternalOnWalk;
+    fi->ea = arm_extabort_type(result);
+    return 0;
+}
+
+static bool get_phys_addr_v5(CPUARMState *env, uint32_t address,
+                             MMUAccessType access_type, ARMMMUIdx mmu_idx,
+                             hwaddr *phys_ptr, int *prot,
+                             target_ulong *page_size,
+                             ARMMMUFaultInfo *fi)
+{
+    CPUState *cs = env_cpu(env);
+    int level = 1;
+    uint32_t table;
+    uint32_t desc;
+    int type;
+    int ap;
+    int domain = 0;
+    int domain_prot;
+    hwaddr phys_addr;
+    uint32_t dacr;
+
+    /* Pagetable walk.  */
+    /* Lookup l1 descriptor.  */
+    if (!get_level1_table_address(env, mmu_idx, &table, address)) {
+        /* Section translation fault if page walk is disabled by PD0 or PD1 */
+        fi->type = ARMFault_Translation;
+        goto do_fault;
+    }
+    desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx),
+                       mmu_idx, fi);
+    if (fi->type != ARMFault_None) {
+        goto do_fault;
+    }
+    type = (desc & 3);
+    domain = (desc >> 5) & 0x0f;
+    if (regime_el(env, mmu_idx) == 1) {
+        dacr = env->cp15.dacr_ns;
+    } else {
+        dacr = env->cp15.dacr_s;
+    }
+    domain_prot = (dacr >> (domain * 2)) & 3;
+    if (type == 0) {
+        /* Section translation fault.  */
+        fi->type = ARMFault_Translation;
+        goto do_fault;
+    }
+    if (type != 2) {
+        level = 2;
+    }
+    if (domain_prot == 0 || domain_prot == 2) {
+        fi->type = ARMFault_Domain;
+        goto do_fault;
+    }
+    if (type == 2) {
+        /* 1Mb section.  */
+        phys_addr = (desc & 0xfff00000) | (address & 0x000fffff);
+        ap = (desc >> 10) & 3;
+        *page_size = 1024 * 1024;
+    } else {
+        /* Lookup l2 entry.  */
+        if (type == 1) {
+            /* Coarse pagetable.  */
+            table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc);
+        } else {
+            /* Fine pagetable.  */
+            table = (desc & 0xfffff000) | ((address >> 8) & 0xffc);
+        }
+        desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx),
+                           mmu_idx, fi);
+        if (fi->type != ARMFault_None) {
+            goto do_fault;
+        }
+        switch (desc & 3) {
+        case 0: /* Page translation fault.  */
+            fi->type = ARMFault_Translation;
+            goto do_fault;
+        case 1: /* 64k page.  */
+            phys_addr = (desc & 0xffff0000) | (address & 0xffff);
+            ap = (desc >> (4 + ((address >> 13) & 6))) & 3;
+            *page_size = 0x10000;
+            break;
+        case 2: /* 4k page.  */
+            phys_addr = (desc & 0xfffff000) | (address & 0xfff);
+            ap = (desc >> (4 + ((address >> 9) & 6))) & 3;
+            *page_size = 0x1000;
+            break;
+        case 3: /* 1k page, or ARMv6/XScale "extended small (4k) page" */
+            if (type == 1) {
+                /* ARMv6/XScale extended small page format */
+                if (arm_feature(env, ARM_FEATURE_XSCALE)
+                    || arm_feature(env, ARM_FEATURE_V6)) {
+                    phys_addr = (desc & 0xfffff000) | (address & 0xfff);
+                    *page_size = 0x1000;
+                } else {
+                    /*
+                     * UNPREDICTABLE in ARMv5; we choose to take a
+                     * page translation fault.
+                     */
+                    fi->type = ARMFault_Translation;
+                    goto do_fault;
+                }
+            } else {
+                phys_addr = (desc & 0xfffffc00) | (address & 0x3ff);
+                *page_size = 0x400;
+            }
+            ap = (desc >> 4) & 3;
+            break;
+        default:
+            /* Never happens, but compiler isn't smart enough to tell.  */
+            abort();
+        }
+    }
+    *prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot);
+    *prot |= *prot ? PAGE_EXEC : 0;
+    if (!(*prot & (1 << access_type))) {
+        /* Access permission fault.  */
+        fi->type = ARMFault_Permission;
+        goto do_fault;
+    }
+    *phys_ptr = phys_addr;
+    return false;
+do_fault:
+    fi->domain = domain;
+    fi->level = level;
+    return true;
+}
+
+static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
+                             MMUAccessType access_type, ARMMMUIdx mmu_idx,
+                             hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
+                             target_ulong *page_size, ARMMMUFaultInfo *fi)
+{
+    CPUState *cs = env_cpu(env);
+    ARMCPU *cpu = env_archcpu(env);
+    int level = 1;
+    uint32_t table;
+    uint32_t desc;
+    uint32_t xn;
+    uint32_t pxn = 0;
+    int type;
+    int ap;
+    int domain = 0;
+    int domain_prot;
+    hwaddr phys_addr;
+    uint32_t dacr;
+    bool ns;
+
+    /* Pagetable walk.  */
+    /* Lookup l1 descriptor.  */
+    if (!get_level1_table_address(env, mmu_idx, &table, address)) {
+        /* Section translation fault if page walk is disabled by PD0 or PD1 */
+        fi->type = ARMFault_Translation;
+        goto do_fault;
+    }
+    desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx),
+                       mmu_idx, fi);
+    if (fi->type != ARMFault_None) {
+        goto do_fault;
+    }
+    type = (desc & 3);
+    if (type == 0 || (type == 3 && !cpu_isar_feature(aa32_pxn, cpu))) {
+        /*
+         * Section translation fault, or attempt to use the encoding
+         * which is Reserved on implementations without PXN.
+         */
+        fi->type = ARMFault_Translation;
+        goto do_fault;
+    }
+    if ((type == 1) || !(desc & (1 << 18))) {
+        /* Page or Section.  */
+        domain = (desc >> 5) & 0x0f;
+    }
+    if (regime_el(env, mmu_idx) == 1) {
+        dacr = env->cp15.dacr_ns;
+    } else {
+        dacr = env->cp15.dacr_s;
+    }
+    if (type == 1) {
+        level = 2;
+    }
+    domain_prot = (dacr >> (domain * 2)) & 3;
+    if (domain_prot == 0 || domain_prot == 2) {
+        /* Section or Page domain fault */
+        fi->type = ARMFault_Domain;
+        goto do_fault;
+    }
+    if (type != 1) {
+        if (desc & (1 << 18)) {
+            /* Supersection.  */
+            phys_addr = (desc & 0xff000000) | (address & 0x00ffffff);
+            phys_addr |= (uint64_t)extract32(desc, 20, 4) << 32;
+            phys_addr |= (uint64_t)extract32(desc, 5, 4) << 36;
+            *page_size = 0x1000000;
+        } else {
+            /* Section.  */
+            phys_addr = (desc & 0xfff00000) | (address & 0x000fffff);
+            *page_size = 0x100000;
+        }
+        ap = ((desc >> 10) & 3) | ((desc >> 13) & 4);
+        xn = desc & (1 << 4);
+        pxn = desc & 1;
+        ns = extract32(desc, 19, 1);
+    } else {
+        if (cpu_isar_feature(aa32_pxn, cpu)) {
+            pxn = (desc >> 2) & 1;
+        }
+        ns = extract32(desc, 3, 1);
+        /* Lookup l2 entry.  */
+        table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc);
+        desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx),
+                           mmu_idx, fi);
+        if (fi->type != ARMFault_None) {
+            goto do_fault;
+        }
+        ap = ((desc >> 4) & 3) | ((desc >> 7) & 4);
+        switch (desc & 3) {
+        case 0: /* Page translation fault.  */
+            fi->type = ARMFault_Translation;
+            goto do_fault;
+        case 1: /* 64k page.  */
+            phys_addr = (desc & 0xffff0000) | (address & 0xffff);
+            xn = desc & (1 << 15);
+            *page_size = 0x10000;
+            break;
+        case 2: case 3: /* 4k page.  */
+            phys_addr = (desc & 0xfffff000) | (address & 0xfff);
+            xn = desc & 1;
+            *page_size = 0x1000;
+            break;
+        default:
+            /* Never happens, but compiler isn't smart enough to tell.  */
+            abort();
+        }
+    }
+    if (domain_prot == 3) {
+        *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+    } else {
+        if (pxn && !regime_is_user(env, mmu_idx)) {
+            xn = 1;
+        }
+        if (xn && access_type == MMU_INST_FETCH) {
+            fi->type = ARMFault_Permission;
+            goto do_fault;
+        }
+
+        if (arm_feature(env, ARM_FEATURE_V6K) &&
+                (regime_sctlr(env, mmu_idx) & SCTLR_AFE)) {
+            /* The simplified model uses AP[0] as an access control bit.  */
+            if ((ap & 1) == 0) {
+                /* Access flag fault.  */
+                fi->type = ARMFault_AccessFlag;
+                goto do_fault;
+            }
+            *prot = simple_ap_to_rw_prot(env, mmu_idx, ap >> 1);
+        } else {
+            *prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot);
+        }
+        if (*prot && !xn) {
+            *prot |= PAGE_EXEC;
+        }
+        if (!(*prot & (1 << access_type))) {
+            /* Access permission fault.  */
+            fi->type = ARMFault_Permission;
+            goto do_fault;
+        }
+    }
+    if (ns) {
+        /*
+         * The NS bit will (as required by the architecture) have no effect if
+         * the CPU doesn't support TZ or this is a non-secure translation
+         * regime, because the attribute will already be non-secure.
+         */
+        attrs->secure = false;
+    }
+    *phys_ptr = phys_addr;
+    return false;
+do_fault:
+    fi->domain = domain;
+    fi->level = level;
+    return true;
+}
+
+/*
+ * check_s2_mmu_setup
+ * @cpu:        ARMCPU
+ * @is_aa64:    True if the translation regime is in AArch64 state
+ * @startlevel: Suggested starting level
+ * @inputsize:  Bitsize of IPAs
+ * @stride:     Page-table stride (See the ARM ARM)
+ *
+ * Returns true if the suggested S2 translation parameters are OK and
+ * false otherwise.
+ */
+static bool check_s2_mmu_setup(ARMCPU *cpu, bool is_aa64, int level,
+                               int inputsize, int stride)
+{
+    const int grainsize = stride + 3;
+    int startsizecheck;
+
+    /* Negative levels are never allowed.  */
+    if (level < 0) {
+        return false;
+    }
+
+    startsizecheck = inputsize - ((3 - level) * stride + grainsize);
+    if (startsizecheck < 1 || startsizecheck > stride + 4) {
+        return false;
+    }
+
+    if (is_aa64) {
+        CPUARMState *env = &cpu->env;
+        unsigned int pamax = arm_pamax(cpu);
+
+        switch (stride) {
+        case 13: /* 64KB Pages.  */
+            if (level == 0 || (level == 1 && pamax <= 42)) {
+                return false;
+            }
+            break;
+        case 11: /* 16KB Pages.  */
+            if (level == 0 || (level == 1 && pamax <= 40)) {
+                return false;
+            }
+            break;
+        case 9: /* 4KB Pages.  */
+            if (level == 0 && pamax <= 42) {
+                return false;
+            }
+            break;
+        default:
+            g_assert_not_reached();
+        }
+
+        /* Inputsize checks.  */
+        if (inputsize > pamax &&
+            (arm_el_is_aa64(env, 1) || inputsize > 40)) {
+            /* This is CONSTRAINED UNPREDICTABLE and we choose to fault.  */
+            return false;
+        }
+    } else {
+        /* AArch32 only supports 4KB pages. Assert on that.  */
+        assert(stride == 9);
+
+        if (level == 0) {
+            return false;
+        }
+    }
+    return true;
+}
+
+/*
+ * Translate from the 4-bit stage 2 representation of
+ * memory attributes (without cache-allocation hints) to
+ * the 8-bit representation of the stage 1 MAIR registers
+ * (which includes allocation hints).
+ *
+ * ref: shared/translation/attrs/S2AttrDecode()
+ *      .../S2ConvertAttrsHints()
+ */
+static uint8_t convert_stage2_attrs(CPUARMState *env, uint8_t s2attrs)
+{
+    uint8_t hiattr = extract32(s2attrs, 2, 2);
+    uint8_t loattr = extract32(s2attrs, 0, 2);
+    uint8_t hihint = 0, lohint = 0;
+
+    if (hiattr != 0) { /* normal memory */
+        if (arm_hcr_el2_eff(env) & HCR_CD) { /* cache disabled */
+            hiattr = loattr = 1; /* non-cacheable */
+        } else {
+            if (hiattr != 1) { /* Write-through or write-back */
+                hihint = 3; /* RW allocate */
+            }
+            if (loattr != 1) { /* Write-through or write-back */
+                lohint = 3; /* RW allocate */
+            }
+        }
+    }
+
+    return (hiattr << 6) | (hihint << 4) | (loattr << 2) | lohint;
+}
+
+static ARMVAParameters aa32_va_parameters(CPUARMState *env, uint32_t va,
+                                          ARMMMUIdx mmu_idx)
+{
+    uint64_t tcr = regime_tcr(env, mmu_idx)->raw_tcr;
+    uint32_t el = regime_el(env, mmu_idx);
+    int select, tsz;
+    bool epd, hpd;
+
+    assert(mmu_idx != ARMMMUIdx_Stage2_S);
+
+    if (mmu_idx == ARMMMUIdx_Stage2) {
+        /* VTCR */
+        bool sext = extract32(tcr, 4, 1);
+        bool sign = extract32(tcr, 3, 1);
+
+        /*
+         * If the sign-extend bit is not the same as t0sz[3], the result
+         * is unpredictable. Flag this as a guest error.
+         */
+        if (sign != sext) {
+            qemu_log_mask(LOG_GUEST_ERROR,
+                          "AArch32: VTCR.S / VTCR.T0SZ[3] mismatch\n");
+        }
+        tsz = sextract32(tcr, 0, 4) + 8;
+        select = 0;
+        hpd = false;
+        epd = false;
+    } else if (el == 2) {
+        /* HTCR */
+        tsz = extract32(tcr, 0, 3);
+        select = 0;
+        hpd = extract64(tcr, 24, 1);
+        epd = false;
+    } else {
+        int t0sz = extract32(tcr, 0, 3);
+        int t1sz = extract32(tcr, 16, 3);
+
+        if (t1sz == 0) {
+            select = va > (0xffffffffu >> t0sz);
+        } else {
+            /* Note that we will detect errors later.  */
+            select = va >= ~(0xffffffffu >> t1sz);
+        }
+        if (!select) {
+            tsz = t0sz;
+            epd = extract32(tcr, 7, 1);
+            hpd = extract64(tcr, 41, 1);
+        } else {
+            tsz = t1sz;
+            epd = extract32(tcr, 23, 1);
+            hpd = extract64(tcr, 42, 1);
+        }
+        /* For aarch32, hpd0 is not enabled without t2e as well.  */
+        hpd &= extract32(tcr, 6, 1);
+    }
+
+    return (ARMVAParameters) {
+        .tsz = tsz,
+        .select = select,
+        .epd = epd,
+        .hpd = hpd,
+    };
+}
+
+/**
+ * get_phys_addr_lpae: perform one stage of page table walk, LPAE format
+ *
+ * Returns false if the translation was successful. Otherwise, phys_ptr, attrs,
+ * prot and page_size may not be filled in, and the populated fsr value provides
+ * information on why the translation aborted, in the format of a long-format
+ * DFSR/IFSR fault register, with the following caveats:
+ *  * the WnR bit is never set (the caller must do this).
+ *
+ * @env: CPUARMState
+ * @address: virtual address to get physical address for
+ * @access_type: MMU_DATA_LOAD, MMU_DATA_STORE or MMU_INST_FETCH
+ * @mmu_idx: MMU index indicating required translation regime
+ * @s1_is_el0: if @mmu_idx is ARMMMUIdx_Stage2 (so this is a stage 2 page table
+ *             walk), must be true if this is stage 2 of a stage 1+2 walk for an
+ *             EL0 access). If @mmu_idx is anything else, @s1_is_el0 is ignored.
+ * @phys_ptr: set to the physical address corresponding to the virtual address
+ * @attrs: set to the memory transaction attributes to use
+ * @prot: set to the permissions for the page containing phys_ptr
+ * @page_size_ptr: set to the size of the page containing phys_ptr
+ * @fi: set to fault info if the translation fails
+ * @cacheattrs: (if non-NULL) set to the cacheability/shareability attributes
+ */
+static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address,
+                               MMUAccessType access_type, ARMMMUIdx mmu_idx,
+                               bool s1_is_el0,
+                               hwaddr *phys_ptr, MemTxAttrs *txattrs, int *prot,
+                               target_ulong *page_size_ptr,
+                               ARMMMUFaultInfo *fi, ARMCacheAttrs *cacheattrs)
+{
+    ARMCPU *cpu = env_archcpu(env);
+    CPUState *cs = CPU(cpu);
+    /* Read an LPAE long-descriptor translation table. */
+    ARMFaultType fault_type = ARMFault_Translation;
+    uint32_t level;
+    ARMVAParameters param;
+    uint64_t ttbr;
+    hwaddr descaddr, indexmask, indexmask_grainsize;
+    uint32_t tableattrs;
+    target_ulong page_size;
+    uint32_t attrs;
+    int32_t stride;
+    int addrsize, inputsize;
+    TCR *tcr = regime_tcr(env, mmu_idx);
+    int ap, ns, xn, pxn;
+    uint32_t el = regime_el(env, mmu_idx);
+    uint64_t descaddrmask;
+    bool aarch64 = arm_el_is_aa64(env, el);
+    bool guarded = false;
+
+    /* TODO: This code does not support shareability levels. */
+    if (aarch64) {
+        param = aa64_va_parameters(env, address, mmu_idx,
+                                   access_type != MMU_INST_FETCH);
+        level = 0;
+        addrsize = 64 - 8 * param.tbi;
+        inputsize = 64 - param.tsz;
+    } else {
+        param = aa32_va_parameters(env, address, mmu_idx);
+        level = 1;
+        addrsize = (mmu_idx == ARMMMUIdx_Stage2 ? 40 : 32);
+        inputsize = addrsize - param.tsz;
+    }
+
+    /*
+     * We determined the region when collecting the parameters, but we
+     * have not yet validated that the address is valid for the region.
+     * Extract the top bits and verify that they all match select.
+     *
+     * For aa32, if inputsize == addrsize, then we have selected the
+     * region by exclusion in aa32_va_parameters and there is no more
+     * validation to do here.
+     */
+    if (inputsize < addrsize) {
+        target_ulong top_bits = sextract64(address, inputsize,
+                                           addrsize - inputsize);
+        if (-top_bits != param.select) {
+            /* The gap between the two regions is a Translation fault */
+            fault_type = ARMFault_Translation;
+            goto do_fault;
+        }
+    }
+
+    if (param.using64k) {
+        stride = 13;
+    } else if (param.using16k) {
+        stride = 11;
+    } else {
+        stride = 9;
+    }
+
+    /*
+     * Note that QEMU ignores shareability and cacheability attributes,
+     * so we don't need to do anything with the SH, ORGN, IRGN fields
+     * in the TTBCR.  Similarly, TTBCR:A1 selects whether we get the
+     * ASID from TTBR0 or TTBR1, but QEMU's TLB doesn't currently
+     * implement any ASID-like capability so we can ignore it (instead
+     * we will always flush the TLB any time the ASID is changed).
+     */
+    ttbr = regime_ttbr(env, mmu_idx, param.select);
+
+    /*
+     * Here we should have set up all the parameters for the translation:
+     * inputsize, ttbr, epd, stride, tbi
+     */
+
+    if (param.epd) {
+        /*
+         * Translation table walk disabled => Translation fault on TLB miss
+         * Note: This is always 0 on 64-bit EL2 and EL3.
+         */
+        goto do_fault;
+    }
+
+    if (mmu_idx != ARMMMUIdx_Stage2 && mmu_idx != ARMMMUIdx_Stage2_S) {
+        /*
+         * The starting level depends on the virtual address size (which can
+         * be up to 48 bits) and the translation granule size. It indicates
+         * the number of strides (stride bits at a time) needed to
+         * consume the bits of the input address. In the pseudocode this is:
+         *  level = 4 - RoundUp((inputsize - grainsize) / stride)
+         * where their 'inputsize' is our 'inputsize', 'grainsize' is
+         * our 'stride + 3' and 'stride' is our 'stride'.
+         * Applying the usual "rounded up m/n is (m+n-1)/n" and simplifying:
+         * = 4 - (inputsize - stride - 3 + stride - 1) / stride
+         * = 4 - (inputsize - 4) / stride;
+         */
+        level = 4 - (inputsize - 4) / stride;
+    } else {
+        /*
+         * For stage 2 translations the starting level is specified by the
+         * VTCR_EL2.SL0 field (whose interpretation depends on the page size)
+         */
+        uint32_t sl0 = extract32(tcr->raw_tcr, 6, 2);
+        uint32_t startlevel;
+        bool ok;
+
+        if (!aarch64 || stride == 9) {
+            /* AArch32 or 4KB pages */
+            startlevel = 2 - sl0;
+
+            if (cpu_isar_feature(aa64_st, cpu)) {
+                startlevel &= 3;
+            }
+        } else {
+            /* 16KB or 64KB pages */
+            startlevel = 3 - sl0;
+        }
+
+        /* Check that the starting level is valid. */
+        ok = check_s2_mmu_setup(cpu, aarch64, startlevel,
+                                inputsize, stride);
+        if (!ok) {
+            fault_type = ARMFault_Translation;
+            goto do_fault;
+        }
+        level = startlevel;
+    }
+
+    indexmask_grainsize = (1ULL << (stride + 3)) - 1;
+    indexmask = (1ULL << (inputsize - (stride * (4 - level)))) - 1;
+
+    /* Now we can extract the actual base address from the TTBR */
+    descaddr = extract64(ttbr, 0, 48);
+    /*
+     * We rely on this masking to clear the RES0 bits at the bottom of the TTBR
+     * and also to mask out CnP (bit 0) which could validly be non-zero.
+     */
+    descaddr &= ~indexmask;
+
+    /*
+     * The address field in the descriptor goes up to bit 39 for ARMv7
+     * but up to bit 47 for ARMv8, but we use the descaddrmask
+     * up to bit 39 for AArch32, because we don't need other bits in that case
+     * to construct next descriptor address (anyway they should be all zeroes).
+     */
+    descaddrmask = ((1ull << (aarch64 ? 48 : 40)) - 1) &
+                   ~indexmask_grainsize;
+
+    /*
+     * Secure accesses start with the page table in secure memory and
+     * can be downgraded to non-secure at any step. Non-secure accesses
+     * remain non-secure. We implement this by just ORing in the NSTable/NS
+     * bits at each step.
+     */
+    tableattrs = regime_is_secure(env, mmu_idx) ? 0 : (1 << 4);
+    for (;;) {
+        uint64_t descriptor;
+        bool nstable;
+
+        descaddr |= (address >> (stride * (4 - level))) & indexmask;
+        descaddr &= ~7ULL;
+        nstable = extract32(tableattrs, 4, 1);
+        descriptor = arm_ldq_ptw(cs, descaddr, !nstable, mmu_idx, fi);
+        if (fi->type != ARMFault_None) {
+            goto do_fault;
+        }
+
+        if (!(descriptor & 1) ||
+            (!(descriptor & 2) && (level == 3))) {
+            /* Invalid, or the Reserved level 3 encoding */
+            goto do_fault;
+        }
+        descaddr = descriptor & descaddrmask;
+
+        if ((descriptor & 2) && (level < 3)) {
+            /*
+             * Table entry. The top five bits are attributes which may
+             * propagate down through lower levels of the table (and
+             * which are all arranged so that 0 means "no effect", so
+             * we can gather them up by ORing in the bits at each level).
+             */
+            tableattrs |= extract64(descriptor, 59, 5);
+            level++;
+            indexmask = indexmask_grainsize;
+            continue;
+        }
+        /*
+         * Block entry at level 1 or 2, or page entry at level 3.
+         * These are basically the same thing, although the number
+         * of bits we pull in from the vaddr varies.
+         */
+        page_size = (1ULL << ((stride * (4 - level)) + 3));
+        descaddr |= (address & (page_size - 1));
+        /* Extract attributes from the descriptor */
+        attrs = extract64(descriptor, 2, 10)
+            | (extract64(descriptor, 52, 12) << 10);
+
+        if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
+            /* Stage 2 table descriptors do not include any attribute fields */
+            break;
+        }
+        /* Merge in attributes from table descriptors */
+        attrs |= nstable << 3; /* NS */
+        guarded = extract64(descriptor, 50, 1);  /* GP */
+        if (param.hpd) {
+            /* HPD disables all the table attributes except NSTable.  */
+            break;
+        }
+        attrs |= extract32(tableattrs, 0, 2) << 11;     /* XN, PXN */
+        /*
+         * The sense of AP[1] vs APTable[0] is reversed, as APTable[0] == 1
+         * means "force PL1 access only", which means forcing AP[1] to 0.
+         */
+        attrs &= ~(extract32(tableattrs, 2, 1) << 4);   /* !APT[0] => AP[1] */
+        attrs |= extract32(tableattrs, 3, 1) << 5;      /* APT[1] => AP[2] */
+        break;
+    }
+    /*
+     * Here descaddr is the final physical address,
+     * and attributes are all in attrs.
+     */
+    fault_type = ARMFault_AccessFlag;
+    if ((attrs & (1 << 8)) == 0) {
+        /* Access flag */
+        goto do_fault;
+    }
+
+    ap = extract32(attrs, 4, 2);
+
+    if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
+        ns = mmu_idx == ARMMMUIdx_Stage2;
+        xn = extract32(attrs, 11, 2);
+        *prot = get_S2prot(env, ap, xn, s1_is_el0);
+    } else {
+        ns = extract32(attrs, 3, 1);
+        xn = extract32(attrs, 12, 1);
+        pxn = extract32(attrs, 11, 1);
+        *prot = get_S1prot(env, mmu_idx, aarch64, ap, ns, xn, pxn);
+    }
+
+    fault_type = ARMFault_Permission;
+    if (!(*prot & (1 << access_type))) {
+        goto do_fault;
+    }
+
+    if (ns) {
+        /*
+         * The NS bit will (as required by the architecture) have no effect if
+         * the CPU doesn't support TZ or this is a non-secure translation
+         * regime, because the attribute will already be non-secure.
+         */
+        txattrs->secure = false;
+    }
+    /* When in aarch64 mode, and BTI is enabled, remember GP in the IOTLB.  */
+    if (aarch64 && guarded && cpu_isar_feature(aa64_bti, cpu)) {
+        arm_tlb_bti_gp(txattrs) = true;
+    }
+
+    if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
+        cacheattrs->attrs = convert_stage2_attrs(env, extract32(attrs, 0, 4));
+    } else {
+        /* Index into MAIR registers for cache attributes */
+        uint8_t attrindx = extract32(attrs, 0, 3);
+        uint64_t mair = env->cp15.mair_el[regime_el(env, mmu_idx)];
+        assert(attrindx <= 7);
+        cacheattrs->attrs = extract64(mair, attrindx * 8, 8);
+    }
+    cacheattrs->shareability = extract32(attrs, 6, 2);
+
+    *phys_ptr = descaddr;
+    *page_size_ptr = page_size;
+    return false;
+
+do_fault:
+    fi->type = fault_type;
+    fi->level = level;
+    /* Tag the error as S2 for failed S1 PTW at S2 or ordinary S2.  */
+    fi->stage2 = fi->s1ptw || (mmu_idx == ARMMMUIdx_Stage2 ||
+                               mmu_idx == ARMMMUIdx_Stage2_S);
+    fi->s1ns = mmu_idx == ARMMMUIdx_Stage2;
+    return true;
+}
+
+static inline void get_phys_addr_pmsav7_default(CPUARMState *env,
+                                                ARMMMUIdx mmu_idx,
+                                                int32_t address, int *prot)
+{
+    if (!arm_feature(env, ARM_FEATURE_M)) {
+        *prot = PAGE_READ | PAGE_WRITE;
+        switch (address) {
+        case 0xF0000000 ... 0xFFFFFFFF:
+            if (regime_sctlr(env, mmu_idx) & SCTLR_V) {
+                /* hivecs execing is ok */
+                *prot |= PAGE_EXEC;
+            }
+            break;
+        case 0x00000000 ... 0x7FFFFFFF:
+            *prot |= PAGE_EXEC;
+            break;
+        }
+    } else {
+        /*
+         * Default system address map for M profile cores.
+         * The architecture specifies which regions are execute-never;
+         * at the MPU level no other checks are defined.
+         */
+        switch (address) {
+        case 0x00000000 ... 0x1fffffff: /* ROM */
+        case 0x20000000 ... 0x3fffffff: /* SRAM */
+        case 0x60000000 ... 0x7fffffff: /* RAM */
+        case 0x80000000 ... 0x9fffffff: /* RAM */
+            *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+            break;
+        case 0x40000000 ... 0x5fffffff: /* Peripheral */
+        case 0xa0000000 ... 0xbfffffff: /* Device */
+        case 0xc0000000 ... 0xdfffffff: /* Device */
+        case 0xe0000000 ... 0xffffffff: /* System */
+            *prot = PAGE_READ | PAGE_WRITE;
+            break;
+        default:
+            g_assert_not_reached();
+        }
+    }
+}
+
+static bool pmsav7_use_background_region(ARMCPU *cpu,
+                                         ARMMMUIdx mmu_idx, bool is_user)
+{
+    /*
+     * Return true if we should use the default memory map as a
+     * "background" region if there are no hits against any MPU regions.
+     */
+    CPUARMState *env = &cpu->env;
+
+    if (is_user) {
+        return false;
+    }
+
+    if (arm_feature(env, ARM_FEATURE_M)) {
+        return env->v7m.mpu_ctrl[regime_is_secure(env, mmu_idx)]
+            & R_V7M_MPU_CTRL_PRIVDEFENA_MASK;
+    } else {
+        return regime_sctlr(env, mmu_idx) & SCTLR_BR;
+    }
+}
+
+static inline bool m_is_ppb_region(CPUARMState *env, uint32_t address)
+{
+    /* True if address is in the M profile PPB region 0xe0000000 - 0xe00fffff */
+    return arm_feature(env, ARM_FEATURE_M) &&
+        extract32(address, 20, 12) == 0xe00;
+}
+
+static inline bool m_is_system_region(CPUARMState *env, uint32_t address)
+{
+    /*
+     * True if address is in the M profile system region
+     * 0xe0000000 - 0xffffffff
+     */
+    return arm_feature(env, ARM_FEATURE_M) && extract32(address, 29, 3) == 0x7;
+}
+
+static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address,
+                                 MMUAccessType access_type, ARMMMUIdx mmu_idx,
+                                 hwaddr *phys_ptr, int *prot,
+                                 target_ulong *page_size,
+                                 ARMMMUFaultInfo *fi)
+{
+    ARMCPU *cpu = env_archcpu(env);
+    int n;
+    bool is_user = regime_is_user(env, mmu_idx);
+
+    *phys_ptr = address;
+    *page_size = TARGET_PAGE_SIZE;
+    *prot = 0;
+
+    if (regime_translation_disabled(env, mmu_idx) ||
+        m_is_ppb_region(env, address)) {
+        /*
+         * MPU disabled or M profile PPB access: use default memory map.
+         * The other case which uses the default memory map in the
+         * v7M ARM ARM pseudocode is exception vector reads from the vector
+         * table. In QEMU those accesses are done in arm_v7m_load_vector(),
+         * which always does a direct read using address_space_ldl(), rather
+         * than going via this function, so we don't need to check that here.
+         */
+        get_phys_addr_pmsav7_default(env, mmu_idx, address, prot);
+    } else { /* MPU enabled */
+        for (n = (int)cpu->pmsav7_dregion - 1; n >= 0; n--) {
+            /* region search */
+            uint32_t base = env->pmsav7.drbar[n];
+            uint32_t rsize = extract32(env->pmsav7.drsr[n], 1, 5);
+            uint32_t rmask;
+            bool srdis = false;
+
+            if (!(env->pmsav7.drsr[n] & 0x1)) {
+                continue;
+            }
+
+            if (!rsize) {
+                qemu_log_mask(LOG_GUEST_ERROR,
+                              "DRSR[%d]: Rsize field cannot be 0\n", n);
+                continue;
+            }
+            rsize++;
+            rmask = (1ull << rsize) - 1;
+
+            if (base & rmask) {
+                qemu_log_mask(LOG_GUEST_ERROR,
+                              "DRBAR[%d]: 0x%" PRIx32 " misaligned "
+                              "to DRSR region size, mask = 0x%" PRIx32 "\n",
+                              n, base, rmask);
+                continue;
+            }
+
+            if (address < base || address > base + rmask) {
+                /*
+                 * Address not in this region. We must check whether the
+                 * region covers addresses in the same page as our address.
+                 * In that case we must not report a size that covers the
+                 * whole page for a subsequent hit against a different MPU
+                 * region or the background region, because it would result in
+                 * incorrect TLB hits for subsequent accesses to addresses that
+                 * are in this MPU region.
+                 */
+                if (ranges_overlap(base, rmask,
+                                   address & TARGET_PAGE_MASK,
+                                   TARGET_PAGE_SIZE)) {
+                    *page_size = 1;
+                }
+                continue;
+            }
+
+            /* Region matched */
+
+            if (rsize >= 8) { /* no subregions for regions < 256 bytes */
+                int i, snd;
+                uint32_t srdis_mask;
+
+                rsize -= 3; /* sub region size (power of 2) */
+                snd = ((address - base) >> rsize) & 0x7;
+                srdis = extract32(env->pmsav7.drsr[n], snd + 8, 1);
+
+                srdis_mask = srdis ? 0x3 : 0x0;
+                for (i = 2; i <= 8 && rsize < TARGET_PAGE_BITS; i *= 2) {
+                    /*
+                     * This will check in groups of 2, 4 and then 8, whether
+                     * the subregion bits are consistent. rsize is incremented
+                     * back up to give the region size, considering consistent
+                     * adjacent subregions as one region. Stop testing if rsize
+                     * is already big enough for an entire QEMU page.
+                     */
+                    int snd_rounded = snd & ~(i - 1);
+                    uint32_t srdis_multi = extract32(env->pmsav7.drsr[n],
+                                                     snd_rounded + 8, i);
+                    if (srdis_mask ^ srdis_multi) {
+                        break;
+                    }
+                    srdis_mask = (srdis_mask << i) | srdis_mask;
+                    rsize++;
+                }
+            }
+            if (srdis) {
+                continue;
+            }
+            if (rsize < TARGET_PAGE_BITS) {
+                *page_size = 1 << rsize;
+            }
+            break;
+        }
+
+        if (n == -1) { /* no hits */
+            if (!pmsav7_use_background_region(cpu, mmu_idx, is_user)) {
+                /* background fault */
+                fi->type = ARMFault_Background;
+                return true;
+            }
+            get_phys_addr_pmsav7_default(env, mmu_idx, address, prot);
+        } else { /* a MPU hit! */
+            uint32_t ap = extract32(env->pmsav7.dracr[n], 8, 3);
+            uint32_t xn = extract32(env->pmsav7.dracr[n], 12, 1);
+
+            if (m_is_system_region(env, address)) {
+                /* System space is always execute never */
+                xn = 1;
+            }
+
+            if (is_user) { /* User mode AP bit decoding */
+                switch (ap) {
+                case 0:
+                case 1:
+                case 5:
+                    break; /* no access */
+                case 3:
+                    *prot |= PAGE_WRITE;
+                    /* fall through */
+                case 2:
+                case 6:
+                    *prot |= PAGE_READ | PAGE_EXEC;
+                    break;
+                case 7:
+                    /* for v7M, same as 6; for R profile a reserved value */
+                    if (arm_feature(env, ARM_FEATURE_M)) {
+                        *prot |= PAGE_READ | PAGE_EXEC;
+                        break;
+                    }
+                    /* fall through */
+                default:
+                    qemu_log_mask(LOG_GUEST_ERROR,
+                                  "DRACR[%d]: Bad value for AP bits: 0x%"
+                                  PRIx32 "\n", n, ap);
+                }
+            } else { /* Priv. mode AP bits decoding */
+                switch (ap) {
+                case 0:
+                    break; /* no access */
+                case 1:
+                case 2:
+                case 3:
+                    *prot |= PAGE_WRITE;
+                    /* fall through */
+                case 5:
+                case 6:
+                    *prot |= PAGE_READ | PAGE_EXEC;
+                    break;
+                case 7:
+                    /* for v7M, same as 6; for R profile a reserved value */
+                    if (arm_feature(env, ARM_FEATURE_M)) {
+                        *prot |= PAGE_READ | PAGE_EXEC;
+                        break;
+                    }
+                    /* fall through */
+                default:
+                    qemu_log_mask(LOG_GUEST_ERROR,
+                                  "DRACR[%d]: Bad value for AP bits: 0x%"
+                                  PRIx32 "\n", n, ap);
+                }
+            }
+
+            /* execute never */
+            if (xn) {
+                *prot &= ~PAGE_EXEC;
+            }
+        }
+    }
+
+    fi->type = ARMFault_Permission;
+    fi->level = 1;
+    return !(*prot & (1 << access_type));
+}
+
+static bool v8m_is_sau_exempt(CPUARMState *env,
+                              uint32_t address, MMUAccessType access_type)
+{
+    /*
+     * The architecture specifies that certain address ranges are
+     * exempt from v8M SAU/IDAU checks.
+     */
+    return
+        (access_type == MMU_INST_FETCH && m_is_system_region(env, address)) ||
+        (address >= 0xe0000000 && address <= 0xe0002fff) ||
+        (address >= 0xe000e000 && address <= 0xe000efff) ||
+        (address >= 0xe002e000 && address <= 0xe002efff) ||
+        (address >= 0xe0040000 && address <= 0xe0041fff) ||
+        (address >= 0xe00ff000 && address <= 0xe00fffff);
+}
+
+void v8m_security_lookup(CPUARMState *env, uint32_t address,
+                                MMUAccessType access_type, ARMMMUIdx mmu_idx,
+                                V8M_SAttributes *sattrs)
+{
+    /*
+     * Look up the security attributes for this address. Compare the
+     * pseudocode SecurityCheck() function.
+     * We assume the caller has zero-initialized *sattrs.
+     */
+    ARMCPU *cpu = env_archcpu(env);
+    int r;
+    bool idau_exempt = false, idau_ns = true, idau_nsc = true;
+    int idau_region = IREGION_NOTVALID;
+    uint32_t addr_page_base = address & TARGET_PAGE_MASK;
+    uint32_t addr_page_limit = addr_page_base + (TARGET_PAGE_SIZE - 1);
+
+    if (cpu->idau) {
+        IDAUInterfaceClass *iic = IDAU_INTERFACE_GET_CLASS(cpu->idau);
+        IDAUInterface *ii = IDAU_INTERFACE(cpu->idau);
+
+        iic->check(ii, address, &idau_region, &idau_exempt, &idau_ns,
+                   &idau_nsc);
+    }
+
+    if (access_type == MMU_INST_FETCH && extract32(address, 28, 4) == 0xf) {
+        /* 0xf0000000..0xffffffff is always S for insn fetches */
+        return;
+    }
+
+    if (idau_exempt || v8m_is_sau_exempt(env, address, access_type)) {
+        sattrs->ns = !regime_is_secure(env, mmu_idx);
+        return;
+    }
+
+    if (idau_region != IREGION_NOTVALID) {
+        sattrs->irvalid = true;
+        sattrs->iregion = idau_region;
+    }
+
+    switch (env->sau.ctrl & 3) {
+    case 0: /* SAU.ENABLE == 0, SAU.ALLNS == 0 */
+        break;
+    case 2: /* SAU.ENABLE == 0, SAU.ALLNS == 1 */
+        sattrs->ns = true;
+        break;
+    default: /* SAU.ENABLE == 1 */
+        for (r = 0; r < cpu->sau_sregion; r++) {
+            if (env->sau.rlar[r] & 1) {
+                uint32_t base = env->sau.rbar[r] & ~0x1f;
+                uint32_t limit = env->sau.rlar[r] | 0x1f;
+
+                if (base <= address && limit >= address) {
+                    if (base > addr_page_base || limit < addr_page_limit) {
+                        sattrs->subpage = true;
+                    }
+                    if (sattrs->srvalid) {
+                        /*
+                         * If we hit in more than one region then we must report
+                         * as Secure, not NS-Callable, with no valid region
+                         * number info.
+                         */
+                        sattrs->ns = false;
+                        sattrs->nsc = false;
+                        sattrs->sregion = 0;
+                        sattrs->srvalid = false;
+                        break;
+                    } else {
+                        if (env->sau.rlar[r] & 2) {
+                            sattrs->nsc = true;
+                        } else {
+                            sattrs->ns = true;
+                        }
+                        sattrs->srvalid = true;
+                        sattrs->sregion = r;
+                    }
+                } else {
+                    /*
+                     * Address not in this region. We must check whether the
+                     * region covers addresses in the same page as our address.
+                     * In that case we must not report a size that covers the
+                     * whole page for a subsequent hit against a different MPU
+                     * region or the background region, because it would result
+                     * in incorrect TLB hits for subsequent accesses to
+                     * addresses that are in this MPU region.
+                     */
+                    if (limit >= base &&
+                        ranges_overlap(base, limit - base + 1,
+                                       addr_page_base,
+                                       TARGET_PAGE_SIZE)) {
+                        sattrs->subpage = true;
+                    }
+                }
+            }
+        }
+        break;
+    }
+
+    /*
+     * The IDAU will override the SAU lookup results if it specifies
+     * higher security than the SAU does.
+     */
+    if (!idau_ns) {
+        if (sattrs->ns || (!idau_nsc && sattrs->nsc)) {
+            sattrs->ns = false;
+            sattrs->nsc = idau_nsc;
+        }
+    }
+}
+
+bool pmsav8_mpu_lookup(CPUARMState *env, uint32_t address,
+                              MMUAccessType access_type, ARMMMUIdx mmu_idx,
+                              hwaddr *phys_ptr, MemTxAttrs *txattrs,
+                              int *prot, bool *is_subpage,
+                              ARMMMUFaultInfo *fi, uint32_t *mregion)
+{
+    /*
+     * Perform a PMSAv8 MPU lookup (without also doing the SAU check
+     * that a full phys-to-virt translation does).
+     * mregion is (if not NULL) set to the region number which matched,
+     * or -1 if no region number is returned (MPU off, address did not
+     * hit a region, address hit in multiple regions).
+     * We set is_subpage to true if the region hit doesn't cover the
+     * entire TARGET_PAGE the address is within.
+     */
+    ARMCPU *cpu = env_archcpu(env);
+    bool is_user = regime_is_user(env, mmu_idx);
+    uint32_t secure = regime_is_secure(env, mmu_idx);
+    int n;
+    int matchregion = -1;
+    bool hit = false;
+    uint32_t addr_page_base = address & TARGET_PAGE_MASK;
+    uint32_t addr_page_limit = addr_page_base + (TARGET_PAGE_SIZE - 1);
+
+    *is_subpage = false;
+    *phys_ptr = address;
+    *prot = 0;
+    if (mregion) {
+        *mregion = -1;
+    }
+
+    /*
+     * Unlike the ARM ARM pseudocode, we don't need to check whether this
+     * was an exception vector read from the vector table (which is always
+     * done using the default system address map), because those accesses
+     * are done in arm_v7m_load_vector(), which always does a direct
+     * read using address_space_ldl(), rather than going via this function.
+     */
+    if (regime_translation_disabled(env, mmu_idx)) { /* MPU disabled */
+        hit = true;
+    } else if (m_is_ppb_region(env, address)) {
+        hit = true;
+    } else {
+        if (pmsav7_use_background_region(cpu, mmu_idx, is_user)) {
+            hit = true;
+        }
+
+        for (n = (int)cpu->pmsav7_dregion - 1; n >= 0; n--) {
+            /* region search */
+            /*
+             * Note that the base address is bits [31:5] from the register
+             * with bits [4:0] all zeroes, but the limit address is bits
+             * [31:5] from the register with bits [4:0] all ones.
+             */
+            uint32_t base = env->pmsav8.rbar[secure][n] & ~0x1f;
+            uint32_t limit = env->pmsav8.rlar[secure][n] | 0x1f;
+
+            if (!(env->pmsav8.rlar[secure][n] & 0x1)) {
+                /* Region disabled */
+                continue;
+            }
+
+            if (address < base || address > limit) {
+                /*
+                 * Address not in this region. We must check whether the
+                 * region covers addresses in the same page as our address.
+                 * In that case we must not report a size that covers the
+                 * whole page for a subsequent hit against a different MPU
+                 * region or the background region, because it would result in
+                 * incorrect TLB hits for subsequent accesses to addresses that
+                 * are in this MPU region.
+                 */
+                if (limit >= base &&
+                    ranges_overlap(base, limit - base + 1,
+                                   addr_page_base,
+                                   TARGET_PAGE_SIZE)) {
+                    *is_subpage = true;
+                }
+                continue;
+            }
+
+            if (base > addr_page_base || limit < addr_page_limit) {
+                *is_subpage = true;
+            }
+
+            if (matchregion != -1) {
+                /*
+                 * Multiple regions match -- always a failure (unlike
+                 * PMSAv7 where highest-numbered-region wins)
+                 */
+                fi->type = ARMFault_Permission;
+                fi->level = 1;
+                return true;
+            }
+
+            matchregion = n;
+            hit = true;
+        }
+    }
+
+    if (!hit) {
+        /* background fault */
+        fi->type = ARMFault_Background;
+        return true;
+    }
+
+    if (matchregion == -1) {
+        /* hit using the background region */
+        get_phys_addr_pmsav7_default(env, mmu_idx, address, prot);
+    } else {
+        uint32_t ap = extract32(env->pmsav8.rbar[secure][matchregion], 1, 2);
+        uint32_t xn = extract32(env->pmsav8.rbar[secure][matchregion], 0, 1);
+        bool pxn = false;
+
+        if (arm_feature(env, ARM_FEATURE_V8_1M)) {
+            pxn = extract32(env->pmsav8.rlar[secure][matchregion], 4, 1);
+        }
+
+        if (m_is_system_region(env, address)) {
+            /* System space is always execute never */
+            xn = 1;
+        }
+
+        *prot = simple_ap_to_rw_prot(env, mmu_idx, ap);
+        if (*prot && !xn && !(pxn && !is_user)) {
+            *prot |= PAGE_EXEC;
+        }
+        /*
+         * We don't need to look the attribute up in the MAIR0/MAIR1
+         * registers because that only tells us about cacheability.
+         */
+        if (mregion) {
+            *mregion = matchregion;
+        }
+    }
+
+    fi->type = ARMFault_Permission;
+    fi->level = 1;
+    return !(*prot & (1 << access_type));
+}
+
+
+static bool get_phys_addr_pmsav8(CPUARMState *env, uint32_t address,
+                                 MMUAccessType access_type, ARMMMUIdx mmu_idx,
+                                 hwaddr *phys_ptr, MemTxAttrs *txattrs,
+                                 int *prot, target_ulong *page_size,
+                                 ARMMMUFaultInfo *fi)
+{
+    uint32_t secure = regime_is_secure(env, mmu_idx);
+    V8M_SAttributes sattrs = {};
+    bool ret;
+    bool mpu_is_subpage;
+
+    if (arm_feature(env, ARM_FEATURE_M_SECURITY)) {
+        v8m_security_lookup(env, address, access_type, mmu_idx, &sattrs);
+        if (access_type == MMU_INST_FETCH) {
+            /*
+             * Instruction fetches always use the MMU bank and the
+             * transaction attribute determined by the fetch address,
+             * regardless of CPU state. This is painful for QEMU
+             * to handle, because it would mean we need to encode
+             * into the mmu_idx not just the (user, negpri) information
+             * for the current security state but also that for the
+             * other security state, which would balloon the number
+             * of mmu_idx values needed alarmingly.
+             * Fortunately we can avoid this because it's not actually
+             * possible to arbitrarily execute code from memory with
+             * the wrong security attribute: it will always generate
+             * an exception of some kind or another, apart from the
+             * special case of an NS CPU executing an SG instruction
+             * in S&NSC memory. So we always just fail the translation
+             * here and sort things out in the exception handler
+             * (including possibly emulating an SG instruction).
+             */
+            if (sattrs.ns != !secure) {
+                if (sattrs.nsc) {
+                    fi->type = ARMFault_QEMU_NSCExec;
+                } else {
+                    fi->type = ARMFault_QEMU_SFault;
+                }
+                *page_size = sattrs.subpage ? 1 : TARGET_PAGE_SIZE;
+                *phys_ptr = address;
+                *prot = 0;
+                return true;
+            }
+        } else {
+            /*
+             * For data accesses we always use the MMU bank indicated
+             * by the current CPU state, but the security attributes
+             * might downgrade a secure access to nonsecure.
+             */
+            if (sattrs.ns) {
+                txattrs->secure = false;
+            } else if (!secure) {
+                /*
+                 * NS access to S memory must fault.
+                 * Architecturally we should first check whether the
+                 * MPU information for this address indicates that we
+                 * are doing an unaligned access to Device memory, which
+                 * should generate a UsageFault instead. QEMU does not
+                 * currently check for that kind of unaligned access though.
+                 * If we added it we would need to do so as a special case
+                 * for M_FAKE_FSR_SFAULT in arm_v7m_cpu_do_interrupt().
+                 */
+                fi->type = ARMFault_QEMU_SFault;
+                *page_size = sattrs.subpage ? 1 : TARGET_PAGE_SIZE;
+                *phys_ptr = address;
+                *prot = 0;
+                return true;
+            }
+        }
+    }
+
+    ret = pmsav8_mpu_lookup(env, address, access_type, mmu_idx, phys_ptr,
+                            txattrs, prot, &mpu_is_subpage, fi, NULL);
+    *page_size = sattrs.subpage || mpu_is_subpage ? 1 : TARGET_PAGE_SIZE;
+    return ret;
+}
+
+static bool get_phys_addr_pmsav5(CPUARMState *env, uint32_t address,
+                                 MMUAccessType access_type, ARMMMUIdx mmu_idx,
+                                 hwaddr *phys_ptr, int *prot,
+                                 ARMMMUFaultInfo *fi)
+{
+    int n;
+    uint32_t mask;
+    uint32_t base;
+    bool is_user = regime_is_user(env, mmu_idx);
+
+    if (regime_translation_disabled(env, mmu_idx)) {
+        /* MPU disabled.  */
+        *phys_ptr = address;
+        *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+        return false;
+    }
+
+    *phys_ptr = address;
+    for (n = 7; n >= 0; n--) {
+        base = env->cp15.c6_region[n];
+        if ((base & 1) == 0) {
+            continue;
+        }
+        mask = 1 << ((base >> 1) & 0x1f);
+        /*
+         * Keep this shift separate from the above to avoid an
+         * (undefined) << 32
+         */
+        mask = (mask << 1) - 1;
+        if (((base ^ address) & ~mask) == 0) {
+            break;
+        }
+    }
+    if (n < 0) {
+        fi->type = ARMFault_Background;
+        return true;
+    }
+
+    if (access_type == MMU_INST_FETCH) {
+        mask = env->cp15.pmsav5_insn_ap;
+    } else {
+        mask = env->cp15.pmsav5_data_ap;
+    }
+    mask = (mask >> (n * 4)) & 0xf;
+    switch (mask) {
+    case 0:
+        fi->type = ARMFault_Permission;
+        fi->level = 1;
+        return true;
+    case 1:
+        if (is_user) {
+            fi->type = ARMFault_Permission;
+            fi->level = 1;
+            return true;
+        }
+        *prot = PAGE_READ | PAGE_WRITE;
+        break;
+    case 2:
+        *prot = PAGE_READ;
+        if (!is_user) {
+            *prot |= PAGE_WRITE;
+        }
+        break;
+    case 3:
+        *prot = PAGE_READ | PAGE_WRITE;
+        break;
+    case 5:
+        if (is_user) {
+            fi->type = ARMFault_Permission;
+            fi->level = 1;
+            return true;
+        }
+        *prot = PAGE_READ;
+        break;
+    case 6:
+        *prot = PAGE_READ;
+        break;
+    default:
+        /* Bad permission.  */
+        fi->type = ARMFault_Permission;
+        fi->level = 1;
+        return true;
+    }
+    *prot |= PAGE_EXEC;
+    return false;
+}
+
+/*
+ * Combine either inner or outer cacheability attributes for normal
+ * memory, according to table D4-42 and pseudocode procedure
+ * CombineS1S2AttrHints() of ARM DDI 0487B.b (the ARMv8 ARM).
+ *
+ * NB: only stage 1 includes allocation hints (RW bits), leading to
+ * some asymmetry.
+ */
+static uint8_t combine_cacheattr_nibble(uint8_t s1, uint8_t s2)
+{
+    if (s1 == 4 || s2 == 4) {
+        /* non-cacheable has precedence */
+        return 4;
+    } else if (extract32(s1, 2, 2) == 0 || extract32(s1, 2, 2) == 2) {
+        /* stage 1 write-through takes precedence */
+        return s1;
+    } else if (extract32(s2, 2, 2) == 2) {
+        /*
+         * stage 2 write-through takes precedence, but the allocation hint
+         * is still taken from stage 1
+         */
+        return (2 << 2) | extract32(s1, 0, 2);
+    } else { /* write-back */
+        return s1;
+    }
+}
+
+/*
+ * Combine S1 and S2 cacheability/shareability attributes, per D4.5.4
+ * and CombineS1S2Desc()
+ *
+ * @s1:      Attributes from stage 1 walk
+ * @s2:      Attributes from stage 2 walk
+ */
+static ARMCacheAttrs combine_cacheattrs(ARMCacheAttrs s1, ARMCacheAttrs s2)
+{
+    uint8_t s1lo, s2lo, s1hi, s2hi;
+    ARMCacheAttrs ret;
+    bool tagged = false;
+
+    if (s1.attrs == 0xf0) {
+        tagged = true;
+        s1.attrs = 0xff;
+    }
+
+    s1lo = extract32(s1.attrs, 0, 4);
+    s2lo = extract32(s2.attrs, 0, 4);
+    s1hi = extract32(s1.attrs, 4, 4);
+    s2hi = extract32(s2.attrs, 4, 4);
+
+    /* Combine shareability attributes (table D4-43) */
+    if (s1.shareability == 2 || s2.shareability == 2) {
+        /* if either are outer-shareable, the result is outer-shareable */
+        ret.shareability = 2;
+    } else if (s1.shareability == 3 || s2.shareability == 3) {
+        /* if either are inner-shareable, the result is inner-shareable */
+        ret.shareability = 3;
+    } else {
+        /* both non-shareable */
+        ret.shareability = 0;
+    }
+
+    /* Combine memory type and cacheability attributes */
+    if (s1hi == 0 || s2hi == 0) {
+        /* Device has precedence over normal */
+        if (s1lo == 0 || s2lo == 0) {
+            /* nGnRnE has precedence over anything */
+            ret.attrs = 0;
+        } else if (s1lo == 4 || s2lo == 4) {
+            /* non-Reordering has precedence over Reordering */
+            ret.attrs = 4;  /* nGnRE */
+        } else if (s1lo == 8 || s2lo == 8) {
+            /* non-Gathering has precedence over Gathering */
+            ret.attrs = 8;  /* nGRE */
+        } else {
+            ret.attrs = 0xc; /* GRE */
+        }
+
+        /*
+         * Any location for which the resultant memory type is any
+         * type of Device memory is always treated as Outer Shareable.
+         */
+        ret.shareability = 2;
+    } else { /* Normal memory */
+        /* Outer/inner cacheability combine independently */
+        ret.attrs = combine_cacheattr_nibble(s1hi, s2hi) << 4
+                  | combine_cacheattr_nibble(s1lo, s2lo);
+
+        if (ret.attrs == 0x44) {
+            /*
+             * Any location for which the resultant memory type is Normal
+             * Inner Non-cacheable, Outer Non-cacheable is always treated
+             * as Outer Shareable.
+             */
+            ret.shareability = 2;
+        }
+    }
+
+    /* TODO: CombineS1S2Desc does not consider transient, only WB, RWA. */
+    if (tagged && ret.attrs == 0xff) {
+        ret.attrs = 0xf0;
+    }
+
+    return ret;
+}
+
+
+/*
+ * get_phys_addr - get the physical address for this virtual address
+ *
+ * Find the physical address corresponding to the given virtual address,
+ * by doing a translation table walk on MMU based systems or using the
+ * MPU state on MPU based systems.
+ *
+ * Returns false if the translation was successful. Otherwise, phys_ptr, attrs,
+ * prot and page_size may not be filled in, and the populated fsr value provides
+ * information on why the translation aborted, in the format of a
+ * DFSR/IFSR fault register, with the following caveats:
+ *  * we honour the short vs long DFSR format differences.
+ *  * the WnR bit is never set (the caller must do this).
+ *  * for PSMAv5 based systems we don't bother to return a full FSR format
+ *    value.
+ *
+ * @env: CPUARMState
+ * @address: virtual address to get physical address for
+ * @access_type: 0 for read, 1 for write, 2 for execute
+ * @mmu_idx: MMU index indicating required translation regime
+ * @phys_ptr: set to the physical address corresponding to the virtual address
+ * @attrs: set to the memory transaction attributes to use
+ * @prot: set to the permissions for the page containing phys_ptr
+ * @page_size: set to the size of the page containing phys_ptr
+ * @fi: set to fault info if the translation fails
+ * @cacheattrs: (if non-NULL) set to the cacheability/shareability attributes
+ */
+bool get_phys_addr(CPUARMState *env, target_ulong address,
+                   MMUAccessType access_type, ARMMMUIdx mmu_idx,
+                   hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
+                   target_ulong *page_size,
+                   ARMMMUFaultInfo *fi, ARMCacheAttrs *cacheattrs)
+{
+    ARMMMUIdx s1_mmu_idx = stage_1_mmu_idx(mmu_idx);
+
+    if (mmu_idx != s1_mmu_idx) {
+        /*
+         * Call ourselves recursively to do the stage 1 and then stage 2
+         * translations if mmu_idx is a two-stage regime.
+         */
+        if (arm_feature(env, ARM_FEATURE_EL2)) {
+            hwaddr ipa;
+            int s2_prot;
+            int ret;
+            ARMCacheAttrs cacheattrs2 = {};
+            ARMMMUIdx s2_mmu_idx;
+            bool is_el0;
+
+            ret = get_phys_addr(env, address, access_type, s1_mmu_idx, &ipa,
+                                attrs, prot, page_size, fi, cacheattrs);
+
+            /* If S1 fails or S2 is disabled, return early.  */
+            if (ret || regime_translation_disabled(env, ARMMMUIdx_Stage2)) {
+                *phys_ptr = ipa;
+                return ret;
+            }
+
+            s2_mmu_idx = attrs->secure ? ARMMMUIdx_Stage2_S : ARMMMUIdx_Stage2;
+            is_el0 = mmu_idx == ARMMMUIdx_E10_0 || mmu_idx == ARMMMUIdx_SE10_0;
+
+            /* S1 is done. Now do S2 translation.  */
+            ret = get_phys_addr_lpae(env, ipa, access_type, s2_mmu_idx, is_el0,
+                                     phys_ptr, attrs, &s2_prot,
+                                     page_size, fi, &cacheattrs2);
+            fi->s2addr = ipa;
+            /* Combine the S1 and S2 perms.  */
+            *prot &= s2_prot;
+
+            /* If S2 fails, return early.  */
+            if (ret) {
+                return ret;
+            }
+
+            /* Combine the S1 and S2 cache attributes. */
+            if (arm_hcr_el2_eff(env) & HCR_DC) {
+                /*
+                 * HCR.DC forces the first stage attributes to
+                 *  Normal Non-Shareable,
+                 *  Inner Write-Back Read-Allocate Write-Allocate,
+                 *  Outer Write-Back Read-Allocate Write-Allocate.
+                 * Do not overwrite Tagged within attrs.
+                 */
+                if (cacheattrs->attrs != 0xf0) {
+                    cacheattrs->attrs = 0xff;
+                }
+                cacheattrs->shareability = 0;
+            }
+            *cacheattrs = combine_cacheattrs(*cacheattrs, cacheattrs2);
+
+            /* Check if IPA translates to secure or non-secure PA space. */
+            if (arm_is_secure_below_el3(env)) {
+                if (attrs->secure) {
+                    attrs->secure =
+                        !(env->cp15.vstcr_el2.raw_tcr & (VSTCR_SA | VSTCR_SW));
+                } else {
+                    attrs->secure =
+                        !((env->cp15.vtcr_el2.raw_tcr & (VTCR_NSA | VTCR_NSW))
+                        || (env->cp15.vstcr_el2.raw_tcr & VSTCR_SA));
+                }
+            }
+            return 0;
+        } else {
+            /*
+             * For non-EL2 CPUs a stage1+stage2 translation is just stage 1.
+             */
+            mmu_idx = stage_1_mmu_idx(mmu_idx);
+        }
+    }
+
+    /*
+     * The page table entries may downgrade secure to non-secure, but
+     * cannot upgrade an non-secure translation regime's attributes
+     * to secure.
+     */
+    attrs->secure = regime_is_secure(env, mmu_idx);
+    attrs->user = regime_is_user(env, mmu_idx);
+
+    /*
+     * Fast Context Switch Extension. This doesn't exist at all in v8.
+     * In v7 and earlier it affects all stage 1 translations.
+     */
+    if (address < 0x02000000 && mmu_idx != ARMMMUIdx_Stage2
+        && !arm_feature(env, ARM_FEATURE_V8)) {
+        if (regime_el(env, mmu_idx) == 3) {
+            address += env->cp15.fcseidr_s;
+        } else {
+            address += env->cp15.fcseidr_ns;
+        }
+    }
+
+    if (arm_feature(env, ARM_FEATURE_PMSA)) {
+        bool ret;
+        *page_size = TARGET_PAGE_SIZE;
+
+        if (arm_feature(env, ARM_FEATURE_V8)) {
+            /* PMSAv8 */
+            ret = get_phys_addr_pmsav8(env, address, access_type, mmu_idx,
+                                       phys_ptr, attrs, prot, page_size, fi);
+        } else if (arm_feature(env, ARM_FEATURE_V7)) {
+            /* PMSAv7 */
+            ret = get_phys_addr_pmsav7(env, address, access_type, mmu_idx,
+                                       phys_ptr, prot, page_size, fi);
+        } else {
+            /* Pre-v7 MPU */
+            ret = get_phys_addr_pmsav5(env, address, access_type, mmu_idx,
+                                       phys_ptr, prot, fi);
+        }
+        qemu_log_mask(CPU_LOG_MMU, "PMSA MPU lookup for %s at 0x%08" PRIx32
+                      " mmu_idx %u -> %s (prot %c%c%c)\n",
+                      access_type == MMU_DATA_LOAD ? "reading" :
+                      (access_type == MMU_DATA_STORE ? "writing" : "execute"),
+                      (uint32_t)address, mmu_idx,
+                      ret ? "Miss" : "Hit",
+                      *prot & PAGE_READ ? 'r' : '-',
+                      *prot & PAGE_WRITE ? 'w' : '-',
+                      *prot & PAGE_EXEC ? 'x' : '-');
+
+        return ret;
+    }
+
+    /* Definitely a real MMU, not an MPU */
+
+    if (regime_translation_disabled(env, mmu_idx)) {
+        uint64_t hcr;
+        uint8_t memattr;
+
+        /*
+         * MMU disabled.  S1 addresses within aa64 translation regimes are
+         * still checked for bounds -- see AArch64.TranslateAddressS1Off.
+         */
+        if (mmu_idx != ARMMMUIdx_Stage2 && mmu_idx != ARMMMUIdx_Stage2_S) {
+            int r_el = regime_el(env, mmu_idx);
+            if (arm_el_is_aa64(env, r_el)) {
+                int pamax = arm_pamax(env_archcpu(env));
+                uint64_t tcr = env->cp15.tcr_el[r_el].raw_tcr;
+                int addrtop, tbi;
+
+                tbi = aa64_va_parameter_tbi(tcr, mmu_idx);
+                if (access_type == MMU_INST_FETCH) {
+                    tbi &= ~aa64_va_parameter_tbid(tcr, mmu_idx);
+                }
+                tbi = (tbi >> extract64(address, 55, 1)) & 1;
+                addrtop = (tbi ? 55 : 63);
+
+                if (extract64(address, pamax, addrtop - pamax + 1) != 0) {
+                    fi->type = ARMFault_AddressSize;
+                    fi->level = 0;
+                    fi->stage2 = false;
+                    return 1;
+                }
+
+                /*
+                 * When TBI is disabled, we've just validated that all of the
+                 * bits above PAMax are zero, so logically we only need to
+                 * clear the top byte for TBI.  But it's clearer to follow
+                 * the pseudocode set of addrdesc.paddress.
+                 */
+                address = extract64(address, 0, 52);
+            }
+        }
+        *phys_ptr = address;
+        *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+        *page_size = TARGET_PAGE_SIZE;
+
+        /* Fill in cacheattr a-la AArch64.TranslateAddressS1Off. */
+        hcr = arm_hcr_el2_eff(env);
+        cacheattrs->shareability = 0;
+        if (hcr & HCR_DC) {
+            if (hcr & HCR_DCT) {
+                memattr = 0xf0;  /* Tagged, Normal, WB, RWA */
+            } else {
+                memattr = 0xff;  /* Normal, WB, RWA */
+            }
+        } else if (access_type == MMU_INST_FETCH) {
+            if (regime_sctlr(env, mmu_idx) & SCTLR_I) {
+                memattr = 0xee;  /* Normal, WT, RA, NT */
+            } else {
+                memattr = 0x44;  /* Normal, NC, No */
+            }
+            cacheattrs->shareability = 2; /* outer sharable */
+        } else {
+            memattr = 0x00;      /* Device, nGnRnE */
+        }
+        cacheattrs->attrs = memattr;
+        return 0;
+    }
+
+    if (regime_using_lpae_format(env, mmu_idx)) {
+        return get_phys_addr_lpae(env, address, access_type, mmu_idx, false,
+                                  phys_ptr, attrs, prot, page_size,
+                                  fi, cacheattrs);
+    } else if (regime_sctlr(env, mmu_idx) & SCTLR_XP) {
+        return get_phys_addr_v6(env, address, access_type, mmu_idx,
+                                phys_ptr, attrs, prot, page_size, fi);
+    } else {
+        return get_phys_addr_v5(env, address, access_type, mmu_idx,
+                                    phys_ptr, prot, page_size, fi);
+    }
+}
+
+hwaddr arm_cpu_get_phys_page_attrs_debug(CPUState *cs, vaddr addr,
+                                         MemTxAttrs *attrs)
+{
+    ARMCPU *cpu = ARM_CPU(cs);
+    CPUARMState *env = &cpu->env;
+    hwaddr phys_addr;
+    target_ulong page_size;
+    int prot;
+    bool ret;
+    ARMMMUFaultInfo fi = {};
+    ARMMMUIdx mmu_idx = arm_mmu_idx(env);
+    ARMCacheAttrs cacheattrs = {};
+
+    *attrs = (MemTxAttrs) {};
+
+    ret = get_phys_addr(env, addr, MMU_DATA_LOAD, mmu_idx, &phys_addr,
+                        attrs, &prot, &page_size, &fi, &cacheattrs);
+
+    if (ret) {
+        return -1;
+    }
+    return phys_addr;
+}
diff --git a/target/arm/cpu-mmu.c b/target/arm/cpu-mmu.c
new file mode 100644
index 0000000000..f463f8458e
--- /dev/null
+++ b/target/arm/cpu-mmu.c
@@ -0,0 +1,124 @@ 
+/*
+ * QEMU ARM CPU address translation related code
+ *
+ * Copyright (c) 2012 SUSE LINUX Products GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see
+ * <http://www.gnu.org/licenses/gpl-2.0.html>
+ */
+
+#include "qemu/osdep.h"
+#include "cpu-mmu.h"
+
+int aa64_va_parameter_tbi(uint64_t tcr, ARMMMUIdx mmu_idx)
+{
+    if (regime_has_2_ranges(mmu_idx)) {
+        return extract64(tcr, 37, 2);
+    } else if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
+        return 0; /* VTCR_EL2 */
+    } else {
+        /* Replicate the single TBI bit so we always have 2 bits.  */
+        return extract32(tcr, 20, 1) * 3;
+    }
+}
+
+int aa64_va_parameter_tbid(uint64_t tcr, ARMMMUIdx mmu_idx)
+{
+    if (regime_has_2_ranges(mmu_idx)) {
+        return extract64(tcr, 51, 2);
+    } else if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
+        return 0; /* VTCR_EL2 */
+    } else {
+        /* Replicate the single TBID bit so we always have 2 bits.  */
+        return extract32(tcr, 29, 1) * 3;
+    }
+}
+
+int aa64_va_parameter_tcma(uint64_t tcr, ARMMMUIdx mmu_idx)
+{
+    if (regime_has_2_ranges(mmu_idx)) {
+        return extract64(tcr, 57, 2);
+    } else {
+        /* Replicate the single TCMA bit so we always have 2 bits.  */
+        return extract32(tcr, 30, 1) * 3;
+    }
+}
+
+ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va,
+                                   ARMMMUIdx mmu_idx, bool data)
+{
+    uint64_t tcr = regime_tcr(env, mmu_idx)->raw_tcr;
+    bool epd, hpd, using16k, using64k;
+    int select, tsz, tbi, max_tsz;
+
+    if (!regime_has_2_ranges(mmu_idx)) {
+        select = 0;
+        tsz = extract32(tcr, 0, 6);
+        using64k = extract32(tcr, 14, 1);
+        using16k = extract32(tcr, 15, 1);
+        if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
+            /* VTCR_EL2 */
+            hpd = false;
+        } else {
+            hpd = extract32(tcr, 24, 1);
+        }
+        epd = false;
+    } else {
+        /*
+         * Bit 55 is always between the two regions, and is canonical for
+         * determining if address tagging is enabled.
+         */
+        select = extract64(va, 55, 1);
+        if (!select) {
+            tsz = extract32(tcr, 0, 6);
+            epd = extract32(tcr, 7, 1);
+            using64k = extract32(tcr, 14, 1);
+            using16k = extract32(tcr, 15, 1);
+            hpd = extract64(tcr, 41, 1);
+        } else {
+            int tg = extract32(tcr, 30, 2);
+            using16k = tg == 1;
+            using64k = tg == 3;
+            tsz = extract32(tcr, 16, 6);
+            epd = extract32(tcr, 23, 1);
+            hpd = extract64(tcr, 42, 1);
+        }
+    }
+
+    if (cpu_isar_feature(aa64_st, env_archcpu(env))) {
+        max_tsz = 48 - using64k;
+    } else {
+        max_tsz = 39;
+    }
+
+    tsz = MIN(tsz, max_tsz);
+    tsz = MAX(tsz, 16);  /* TODO: ARMv8.2-LVA  */
+
+    /* Present TBI as a composite with TBID.  */
+    tbi = aa64_va_parameter_tbi(tcr, mmu_idx);
+    if (!data) {
+        tbi &= ~aa64_va_parameter_tbid(tcr, mmu_idx);
+    }
+    tbi = (tbi >> select) & 1;
+
+    return (ARMVAParameters) {
+        .tsz = tsz,
+        .select = select,
+        .tbi = tbi,
+        .epd = epd,
+        .hpd = hpd,
+        .using16k = using16k,
+        .using64k = using64k,
+    };
+}
diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index 9722848923..6b6ccb3327 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -42,6 +42,7 @@ 
 #include "kvm_arm.h"
 #include "disas/capstone.h"
 #include "fpu/softfloat.h"
+#include "cpu-mmu.h"
 
 static void arm_cpu_set_pc(CPUState *cs, vaddr value)
 {
diff --git a/target/arm/tcg/helper.c b/target/arm/tcg/helper.c
index d18dc6cbfa..7345e090fa 100644
--- a/target/arm/tcg/helper.c
+++ b/target/arm/tcg/helper.c
@@ -36,23 +36,12 @@ 
 #include "exec/cpu_ldst.h"
 #include "semihosting/common-semi.h"
 #endif
+#include "cpu-mmu.h"
 
 #define ARM_CPU_FREQ 1000000000 /* FIXME: 1 GHz, should be configurable */
 #define PMCR_NUM_COUNTERS 4 /* QEMU IMPDEF choice */
 
-#ifndef CONFIG_USER_ONLY
-
-static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address,
-                               MMUAccessType access_type, ARMMMUIdx mmu_idx,
-                               bool s1_is_el0,
-                               hwaddr *phys_ptr, MemTxAttrs *txattrs, int *prot,
-                               target_ulong *page_size_ptr,
-                               ARMMMUFaultInfo *fi, ARMCacheAttrs *cacheattrs)
-    __attribute__((nonnull));
-#endif
-
 static void switch_mode(CPUARMState *env, int mode);
-static int aa64_va_parameter_tbi(uint64_t tcr, ARMMMUIdx mmu_idx);
 
 static int vfp_gdb_get_reg(CPUARMState *env, GByteArray *buf, int reg)
 {
@@ -10129,125 +10118,6 @@  uint64_t arm_sctlr(CPUARMState *env, int el)
     return env->cp15.sctlr_el[el];
 }
 
-/* Return the SCTLR value which controls this address translation regime */
-static inline uint64_t regime_sctlr(CPUARMState *env, ARMMMUIdx mmu_idx)
-{
-    return env->cp15.sctlr_el[regime_el(env, mmu_idx)];
-}
-
-#ifndef CONFIG_USER_ONLY
-
-/* Return true if the specified stage of address translation is disabled */
-static inline bool regime_translation_disabled(CPUARMState *env,
-                                               ARMMMUIdx mmu_idx)
-{
-    uint64_t hcr_el2;
-
-    if (arm_feature(env, ARM_FEATURE_M)) {
-        switch (env->v7m.mpu_ctrl[regime_is_secure(env, mmu_idx)] &
-                (R_V7M_MPU_CTRL_ENABLE_MASK | R_V7M_MPU_CTRL_HFNMIENA_MASK)) {
-        case R_V7M_MPU_CTRL_ENABLE_MASK:
-            /* Enabled, but not for HardFault and NMI */
-            return mmu_idx & ARM_MMU_IDX_M_NEGPRI;
-        case R_V7M_MPU_CTRL_ENABLE_MASK | R_V7M_MPU_CTRL_HFNMIENA_MASK:
-            /* Enabled for all cases */
-            return false;
-        case 0:
-        default:
-            /*
-             * HFNMIENA set and ENABLE clear is UNPREDICTABLE, but
-             * we warned about that in armv7m_nvic.c when the guest set it.
-             */
-            return true;
-        }
-    }
-
-    hcr_el2 = arm_hcr_el2_eff(env);
-
-    if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
-        /* HCR.DC means HCR.VM behaves as 1 */
-        return (hcr_el2 & (HCR_DC | HCR_VM)) == 0;
-    }
-
-    if (hcr_el2 & HCR_TGE) {
-        /* TGE means that NS EL0/1 act as if SCTLR_EL1.M is zero */
-        if (!regime_is_secure(env, mmu_idx) && regime_el(env, mmu_idx) == 1) {
-            return true;
-        }
-    }
-
-    if ((hcr_el2 & HCR_DC) && arm_mmu_idx_is_stage1_of_2(mmu_idx)) {
-        /* HCR.DC means SCTLR_EL1.M behaves as 0 */
-        return true;
-    }
-
-    return (regime_sctlr(env, mmu_idx) & SCTLR_M) == 0;
-}
-
-static inline bool regime_translation_big_endian(CPUARMState *env,
-                                                 ARMMMUIdx mmu_idx)
-{
-    return (regime_sctlr(env, mmu_idx) & SCTLR_EE) != 0;
-}
-
-/* Return the TTBR associated with this translation regime */
-static inline uint64_t regime_ttbr(CPUARMState *env, ARMMMUIdx mmu_idx,
-                                   int ttbrn)
-{
-    if (mmu_idx == ARMMMUIdx_Stage2) {
-        return env->cp15.vttbr_el2;
-    }
-    if (mmu_idx == ARMMMUIdx_Stage2_S) {
-        return env->cp15.vsttbr_el2;
-    }
-    if (ttbrn == 0) {
-        return env->cp15.ttbr0_el[regime_el(env, mmu_idx)];
-    } else {
-        return env->cp15.ttbr1_el[regime_el(env, mmu_idx)];
-    }
-}
-
-#endif /* !CONFIG_USER_ONLY */
-
-/*
- * Convert a possible stage1+2 MMU index into the appropriate
- * stage 1 MMU index
- */
-static inline ARMMMUIdx stage_1_mmu_idx(ARMMMUIdx mmu_idx)
-{
-    switch (mmu_idx) {
-    case ARMMMUIdx_SE10_0:
-        return ARMMMUIdx_Stage1_SE0;
-    case ARMMMUIdx_SE10_1:
-        return ARMMMUIdx_Stage1_SE1;
-    case ARMMMUIdx_SE10_1_PAN:
-        return ARMMMUIdx_Stage1_SE1_PAN;
-    case ARMMMUIdx_E10_0:
-        return ARMMMUIdx_Stage1_E0;
-    case ARMMMUIdx_E10_1:
-        return ARMMMUIdx_Stage1_E1;
-    case ARMMMUIdx_E10_1_PAN:
-        return ARMMMUIdx_Stage1_E1_PAN;
-    default:
-        return mmu_idx;
-    }
-}
-
-/* Return true if the translation regime is using LPAE format page tables */
-static inline bool regime_using_lpae_format(CPUARMState *env,
-                                            ARMMMUIdx mmu_idx)
-{
-    int el = regime_el(env, mmu_idx);
-    if (el == 2 || arm_el_is_aa64(env, el)) {
-        return true;
-    }
-    if (arm_feature(env, ARM_FEATURE_LPAE)
-        && (regime_tcr(env, mmu_idx)->raw_tcr & TTBCR_EAE)) {
-        return true;
-    }
-    return false;
-}
-
 /* Returns true if the stage 1 translation regime is using LPAE format page
  * tables. Used when raising alignment exceptions, whose FSR changes depending
  * on whether the long or short descriptor format is in use. */
@@ -10258,2316 +10128,6 @@  bool arm_s1_regime_using_lpae_format(CPUARMState *env, ARMMMUIdx mmu_idx)
     return regime_using_lpae_format(env, mmu_idx);
 }
 
-#ifndef CONFIG_USER_ONLY
-static inline bool regime_is_user(CPUARMState *env, ARMMMUIdx mmu_idx)
-{
-    switch (mmu_idx) {
-    case ARMMMUIdx_SE10_0:
-    case ARMMMUIdx_E20_0:
-    case ARMMMUIdx_SE20_0:
-    case ARMMMUIdx_Stage1_E0:
-    case ARMMMUIdx_Stage1_SE0:
-    case ARMMMUIdx_MUser:
-    case ARMMMUIdx_MSUser:
-    case ARMMMUIdx_MUserNegPri:
-    case ARMMMUIdx_MSUserNegPri:
-        return true;
-    default:
-        return false;
-    case ARMMMUIdx_E10_0:
-    case ARMMMUIdx_E10_1:
-    case ARMMMUIdx_E10_1_PAN:
-        g_assert_not_reached();
-    }
-}
-
-/*
- * Translate section/page access permissions to page
- * R/W protection flags
- *
- * @env:         CPUARMState
- * @mmu_idx:     MMU index indicating required translation regime
- * @ap:          The 3-bit access permissions (AP[2:0])
- * @domain_prot: The 2-bit domain access permissions
- */
-static inline int ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx,
-                                int ap, int domain_prot)
-{
-    bool is_user = regime_is_user(env, mmu_idx);
-
-    if (domain_prot == 3) {
-        return PAGE_READ | PAGE_WRITE;
-    }
-
-    switch (ap) {
-    case 0:
-        if (arm_feature(env, ARM_FEATURE_V7)) {
-            return 0;
-        }
-        switch (regime_sctlr(env, mmu_idx) & (SCTLR_S | SCTLR_R)) {
-        case SCTLR_S:
-            return is_user ? 0 : PAGE_READ;
-        case SCTLR_R:
-            return PAGE_READ;
-        default:
-            return 0;
-        }
-    case 1:
-        return is_user ? 0 : PAGE_READ | PAGE_WRITE;
-    case 2:
-        if (is_user) {
-            return PAGE_READ;
-        } else {
-            return PAGE_READ | PAGE_WRITE;
-        }
-    case 3:
-        return PAGE_READ | PAGE_WRITE;
-    case 4: /* Reserved.  */
-        return 0;
-    case 5:
-        return is_user ? 0 : PAGE_READ;
-    case 6:
-        return PAGE_READ;
-    case 7:
-        if (!arm_feature(env, ARM_FEATURE_V6K)) {
-            return 0;
-        }
-        return PAGE_READ;
-    default:
-        g_assert_not_reached();
-    }
-}
-
-/*
- * Translate section/page access permissions to page
- * R/W protection flags.
- *
- * @ap:      The 2-bit simple AP (AP[2:1])
- * @is_user: TRUE if accessing from PL0
- */
-static inline int simple_ap_to_rw_prot_is_user(int ap, bool is_user)
-{
-    switch (ap) {
-    case 0:
-        return is_user ? 0 : PAGE_READ | PAGE_WRITE;
-    case 1:
-        return PAGE_READ | PAGE_WRITE;
-    case 2:
-        return is_user ? 0 : PAGE_READ;
-    case 3:
-        return PAGE_READ;
-    default:
-        g_assert_not_reached();
-    }
-}
-
-static inline int
-simple_ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx, int ap)
-{
-    return simple_ap_to_rw_prot_is_user(ap, regime_is_user(env, mmu_idx));
-}
-
-/*
- * Translate S2 section/page access permissions to protection flags
- *
- * @env:     CPUARMState
- * @s2ap:    The 2-bit stage2 access permissions (S2AP)
- * @xn:      XN (execute-never) bits
- * @s1_is_el0: true if this is S2 of an S1+2 walk for EL0
- */
-static int get_S2prot(CPUARMState *env, int s2ap, int xn, bool s1_is_el0)
-{
-    int prot = 0;
-
-    if (s2ap & 1) {
-        prot |= PAGE_READ;
-    }
-    if (s2ap & 2) {
-        prot |= PAGE_WRITE;
-    }
-
-    if (cpu_isar_feature(any_tts2uxn, env_archcpu(env))) {
-        switch (xn) {
-        case 0:
-            prot |= PAGE_EXEC;
-            break;
-        case 1:
-            if (s1_is_el0) {
-                prot |= PAGE_EXEC;
-            }
-            break;
-        case 2:
-            break;
-        case 3:
-            if (!s1_is_el0) {
-                prot |= PAGE_EXEC;
-            }
-            break;
-        default:
-            g_assert_not_reached();
-        }
-    } else {
-        if (!extract32(xn, 1, 1)) {
-            if (arm_el_is_aa64(env, 2) || prot & PAGE_READ) {
-                prot |= PAGE_EXEC;
-            }
-        }
-    }
-    return prot;
-}
-
-/*
- * Translate section/page access permissions to protection flags
- *
- * @env:     CPUARMState
- * @mmu_idx: MMU index indicating required translation regime
- * @is_aa64: TRUE if AArch64
- * @ap:      The 2-bit simple AP (AP[2:1])
- * @ns:      NS (non-secure) bit
- * @xn:      XN (execute-never) bit
- * @pxn:     PXN (privileged execute-never) bit
- */
-static int get_S1prot(CPUARMState *env, ARMMMUIdx mmu_idx, bool is_aa64,
-                      int ap, int ns, int xn, int pxn)
-{
-    bool is_user = regime_is_user(env, mmu_idx);
-    int prot_rw, user_rw;
-    bool have_wxn;
-    int wxn = 0;
-
-    assert(mmu_idx != ARMMMUIdx_Stage2);
-    assert(mmu_idx != ARMMMUIdx_Stage2_S);
-
-    user_rw = simple_ap_to_rw_prot_is_user(ap, true);
-    if (is_user) {
-        prot_rw = user_rw;
-    } else {
-        if (user_rw && regime_is_pan(env, mmu_idx)) {
-            /* PAN forbids data accesses but doesn't affect insn fetch */
-            prot_rw = 0;
-        } else {
-            prot_rw = simple_ap_to_rw_prot_is_user(ap, false);
-        }
-    }
-
-    if (ns && arm_is_secure(env) && (env->cp15.scr_el3 & SCR_SIF)) {
-        return prot_rw;
-    }
-
-    /*
-     * TODO have_wxn should be replaced with
-     *   ARM_FEATURE_V8 || (ARM_FEATURE_V7 && ARM_FEATURE_EL2)
-     * when ARM_FEATURE_EL2 starts getting set. For now we assume all LPAE
-     * compatible processors have EL2, which is required for [U]WXN.
-     */
-    have_wxn = arm_feature(env, ARM_FEATURE_LPAE);
-
-    if (have_wxn) {
-        wxn = regime_sctlr(env, mmu_idx) & SCTLR_WXN;
-    }
-
-    if (is_aa64) {
-        if (regime_has_2_ranges(mmu_idx) && !is_user) {
-            xn = pxn || (user_rw & PAGE_WRITE);
-        }
-    } else if (arm_feature(env, ARM_FEATURE_V7)) {
-        switch (regime_el(env, mmu_idx)) {
-        case 1:
-        case 3:
-            if (is_user) {
-                xn = xn || !(user_rw & PAGE_READ);
-            } else {
-                int uwxn = 0;
-                if (have_wxn) {
-                    uwxn = regime_sctlr(env, mmu_idx) & SCTLR_UWXN;
-                }
-                xn = xn || !(prot_rw & PAGE_READ) || pxn ||
-                     (uwxn && (user_rw & PAGE_WRITE));
-            }
-            break;
-        case 2:
-            break;
-        }
-    } else {
-        xn = wxn = 0;
-    }
-
-    if (xn || (wxn && (prot_rw & PAGE_WRITE))) {
-        return prot_rw;
-    }
-    return prot_rw | PAGE_EXEC;
-}
-
-static bool get_level1_table_address(CPUARMState *env, ARMMMUIdx mmu_idx,
-                                     uint32_t *table, uint32_t address)
-{
-    /* Note that we can only get here for an AArch32 PL0/PL1 lookup */
-    TCR *tcr = regime_tcr(env, mmu_idx);
-
-    if (address & tcr->mask) {
-        if (tcr->raw_tcr & TTBCR_PD1) {
-            /* Translation table walk disabled for TTBR1 */
-            return false;
-        }
-        *table = regime_ttbr(env, mmu_idx, 1) & 0xffffc000;
-    } else {
-        if (tcr->raw_tcr & TTBCR_PD0) {
-            /* Translation table walk disabled for TTBR0 */
-            return false;
-        }
-        *table = regime_ttbr(env, mmu_idx, 0) & tcr->base_mask;
-    }
-    *table |= (address >> 18) & 0x3ffc;
-    return true;
-}
-
-/* Translate a S1 pagetable walk through S2 if needed.  */
-static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx,
-                               hwaddr addr, bool *is_secure,
-                               ARMMMUFaultInfo *fi)
-{
-    if (arm_mmu_idx_is_stage1_of_2(mmu_idx) &&
-        !regime_translation_disabled(env, ARMMMUIdx_Stage2)) {
-        target_ulong s2size;
-        hwaddr s2pa;
-        int s2prot;
-        int ret;
-        ARMMMUIdx s2_mmu_idx = *is_secure ? ARMMMUIdx_Stage2_S
-                                          : ARMMMUIdx_Stage2;
-        ARMCacheAttrs cacheattrs = {};
-        MemTxAttrs txattrs = {};
-
-        ret = get_phys_addr_lpae(env, addr, MMU_DATA_LOAD, s2_mmu_idx, false,
-                                 &s2pa, &txattrs, &s2prot, &s2size, fi,
-                                 &cacheattrs);
-        if (ret) {
-            assert(fi->type != ARMFault_None);
-            fi->s2addr = addr;
-            fi->stage2 = true;
-            fi->s1ptw = true;
-            fi->s1ns = !*is_secure;
-            return ~0;
-        }
-        if ((arm_hcr_el2_eff(env) & HCR_PTW) &&
-            (cacheattrs.attrs & 0xf0) == 0) {
-            /*
-             * PTW set and S1 walk touched S2 Device memory:
-             * generate Permission fault.
-             */
-            fi->type = ARMFault_Permission;
-            fi->s2addr = addr;
-            fi->stage2 = true;
-            fi->s1ptw = true;
-            fi->s1ns = !*is_secure;
-            return ~0;
-        }
-
-        if (arm_is_secure_below_el3(env)) {
-            /* Check if page table walk is to secure or non-secure PA space. */
-            if (*is_secure) {
-                *is_secure = !(env->cp15.vstcr_el2.raw_tcr & VSTCR_SW);
-            } else {
-                *is_secure = !(env->cp15.vtcr_el2.raw_tcr & VTCR_NSW);
-            }
-        } else {
-            assert(!*is_secure);
-        }
-
-        addr = s2pa;
-    }
-    return addr;
-}
-
-/* All loads done in the course of a page table walk go through here. */
-static uint32_t arm_ldl_ptw(CPUState *cs, hwaddr addr, bool is_secure,
-                            ARMMMUIdx mmu_idx, ARMMMUFaultInfo *fi)
-{
-    ARMCPU *cpu = ARM_CPU(cs);
-    CPUARMState *env = &cpu->env;
-    MemTxAttrs attrs = {};
-    MemTxResult result = MEMTX_OK;
-    AddressSpace *as;
-    uint32_t data;
-
-    addr = S1_ptw_translate(env, mmu_idx, addr, &is_secure, fi);
-    attrs.secure = is_secure;
-    as = arm_addressspace(cs, attrs);
-    if (fi->s1ptw) {
-        return 0;
-    }
-    if (regime_translation_big_endian(env, mmu_idx)) {
-        data = address_space_ldl_be(as, addr, attrs, &result);
-    } else {
-        data = address_space_ldl_le(as, addr, attrs, &result);
-    }
-    if (result == MEMTX_OK) {
-        return data;
-    }
-    fi->type = ARMFault_SyncExternalOnWalk;
-    fi->ea = arm_extabort_type(result);
-    return 0;
-}
-
-static uint64_t arm_ldq_ptw(CPUState *cs, hwaddr addr, bool is_secure,
-                            ARMMMUIdx mmu_idx, ARMMMUFaultInfo *fi)
-{
-    ARMCPU *cpu = ARM_CPU(cs);
-    CPUARMState *env = &cpu->env;
-    MemTxAttrs attrs = {};
-    MemTxResult result = MEMTX_OK;
-    AddressSpace *as;
-    uint64_t data;
-
-    addr = S1_ptw_translate(env, mmu_idx, addr, &is_secure, fi);
-    attrs.secure = is_secure;
-    as = arm_addressspace(cs, attrs);
-    if (fi->s1ptw) {
-        return 0;
-    }
-    if (regime_translation_big_endian(env, mmu_idx)) {
-        data = address_space_ldq_be(as, addr, attrs, &result);
-    } else {
-        data = address_space_ldq_le(as, addr, attrs, &result);
-    }
-    if (result == MEMTX_OK) {
-        return data;
-    }
-    fi->type = ARMFault_SyncExternalOnWalk;
-    fi->ea = arm_extabort_type(result);
-    return 0;
-}
-
-static bool get_phys_addr_v5(CPUARMState *env, uint32_t address,
-                             MMUAccessType access_type, ARMMMUIdx mmu_idx,
-                             hwaddr *phys_ptr, int *prot,
-                             target_ulong *page_size,
-                             ARMMMUFaultInfo *fi)
-{
-    CPUState *cs = env_cpu(env);
-    int level = 1;
-    uint32_t table;
-    uint32_t desc;
-    int type;
-    int ap;
-    int domain = 0;
-    int domain_prot;
-    hwaddr phys_addr;
-    uint32_t dacr;
-
-    /* Pagetable walk.  */
-    /* Lookup l1 descriptor.  */
-    if (!get_level1_table_address(env, mmu_idx, &table, address)) {
-        /* Section translation fault if page walk is disabled by PD0 or PD1 */
-        fi->type = ARMFault_Translation;
-        goto do_fault;
-    }
-    desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx),
-                       mmu_idx, fi);
-    if (fi->type != ARMFault_None) {
-        goto do_fault;
-    }
-    type = (desc & 3);
-    domain = (desc >> 5) & 0x0f;
-    if (regime_el(env, mmu_idx) == 1) {
-        dacr = env->cp15.dacr_ns;
-    } else {
-        dacr = env->cp15.dacr_s;
-    }
-    domain_prot = (dacr >> (domain * 2)) & 3;
-    if (type == 0) {
-        /* Section translation fault.  */
-        fi->type = ARMFault_Translation;
-        goto do_fault;
-    }
-    if (type != 2) {
-        level = 2;
-    }
-    if (domain_prot == 0 || domain_prot == 2) {
-        fi->type = ARMFault_Domain;
-        goto do_fault;
-    }
-    if (type == 2) {
-        /* 1Mb section.  */
-        phys_addr = (desc & 0xfff00000) | (address & 0x000fffff);
-        ap = (desc >> 10) & 3;
-        *page_size = 1024 * 1024;
-    } else {
-        /* Lookup l2 entry.  */
-        if (type == 1) {
-            /* Coarse pagetable.  */
-            table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc);
-        } else {
-            /* Fine pagetable.  */
-            table = (desc & 0xfffff000) | ((address >> 8) & 0xffc);
-        }
-        desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx),
-                           mmu_idx, fi);
-        if (fi->type != ARMFault_None) {
-            goto do_fault;
-        }
-        switch (desc & 3) {
-        case 0: /* Page translation fault.  */
-            fi->type = ARMFault_Translation;
-            goto do_fault;
-        case 1: /* 64k page.  */
-            phys_addr = (desc & 0xffff0000) | (address & 0xffff);
-            ap = (desc >> (4 + ((address >> 13) & 6))) & 3;
-            *page_size = 0x10000;
-            break;
-        case 2: /* 4k page.  */
-            phys_addr = (desc & 0xfffff000) | (address & 0xfff);
-            ap = (desc >> (4 + ((address >> 9) & 6))) & 3;
-            *page_size = 0x1000;
-            break;
-        case 3: /* 1k page, or ARMv6/XScale "extended small (4k) page" */
-            if (type == 1) {
-                /* ARMv6/XScale extended small page format */
-                if (arm_feature(env, ARM_FEATURE_XSCALE)
-                    || arm_feature(env, ARM_FEATURE_V6)) {
-                    phys_addr = (desc & 0xfffff000) | (address & 0xfff);
-                    *page_size = 0x1000;
-                } else {
-                    /*
-                     * UNPREDICTABLE in ARMv5; we choose to take a
-                     * page translation fault.
-                     */
-                    fi->type = ARMFault_Translation;
-                    goto do_fault;
-                }
-            } else {
-                phys_addr = (desc & 0xfffffc00) | (address & 0x3ff);
-                *page_size = 0x400;
-            }
-            ap = (desc >> 4) & 3;
-            break;
-        default:
-            /* Never happens, but compiler isn't smart enough to tell.  */
-            abort();
-        }
-    }
-    *prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot);
-    *prot |= *prot ? PAGE_EXEC : 0;
-    if (!(*prot & (1 << access_type))) {
-        /* Access permission fault.  */
-        fi->type = ARMFault_Permission;
-        goto do_fault;
-    }
-    *phys_ptr = phys_addr;
-    return false;
-do_fault:
-    fi->domain = domain;
-    fi->level = level;
-    return true;
-}
-
-static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
-                             MMUAccessType access_type, ARMMMUIdx mmu_idx,
-                             hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
-                             target_ulong *page_size, ARMMMUFaultInfo *fi)
-{
-    CPUState *cs = env_cpu(env);
-    ARMCPU *cpu = env_archcpu(env);
-    int level = 1;
-    uint32_t table;
-    uint32_t desc;
-    uint32_t xn;
-    uint32_t pxn = 0;
-    int type;
-    int ap;
-    int domain = 0;
-    int domain_prot;
-    hwaddr phys_addr;
-    uint32_t dacr;
-    bool ns;
-
-    /* Pagetable walk.  */
-    /* Lookup l1 descriptor.  */
-    if (!get_level1_table_address(env, mmu_idx, &table, address)) {
-        /* Section translation fault if page walk is disabled by PD0 or PD1 */
-        fi->type = ARMFault_Translation;
-        goto do_fault;
-    }
-    desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx),
-                       mmu_idx, fi);
-    if (fi->type != ARMFault_None) {
-        goto do_fault;
-    }
-    type = (desc & 3);
-    if (type == 0 || (type == 3 && !cpu_isar_feature(aa32_pxn, cpu))) {
-        /*
-         * Section translation fault, or attempt to use the encoding
-         * which is Reserved on implementations without PXN.
-         */
-        fi->type = ARMFault_Translation;
-        goto do_fault;
-    }
-    if ((type == 1) || !(desc & (1 << 18))) {
-        /* Page or Section.  */
-        domain = (desc >> 5) & 0x0f;
-    }
-    if (regime_el(env, mmu_idx) == 1) {
-        dacr = env->cp15.dacr_ns;
-    } else {
-        dacr = env->cp15.dacr_s;
-    }
-    if (type == 1) {
-        level = 2;
-    }
-    domain_prot = (dacr >> (domain * 2)) & 3;
-    if (domain_prot == 0 || domain_prot == 2) {
-        /* Section or Page domain fault */
-        fi->type = ARMFault_Domain;
-        goto do_fault;
-    }
-    if (type != 1) {
-        if (desc & (1 << 18)) {
-            /* Supersection.  */
-            phys_addr = (desc & 0xff000000) | (address & 0x00ffffff);
-            phys_addr |= (uint64_t)extract32(desc, 20, 4) << 32;
-            phys_addr |= (uint64_t)extract32(desc, 5, 4) << 36;
-            *page_size = 0x1000000;
-        } else {
-            /* Section.  */
-            phys_addr = (desc & 0xfff00000) | (address & 0x000fffff);
-            *page_size = 0x100000;
-        }
-        ap = ((desc >> 10) & 3) | ((desc >> 13) & 4);
-        xn = desc & (1 << 4);
-        pxn = desc & 1;
-        ns = extract32(desc, 19, 1);
-    } else {
-        if (cpu_isar_feature(aa32_pxn, cpu)) {
-            pxn = (desc >> 2) & 1;
-        }
-        ns = extract32(desc, 3, 1);
-        /* Lookup l2 entry.  */
-        table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc);
-        desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx),
-                           mmu_idx, fi);
-        if (fi->type != ARMFault_None) {
-            goto do_fault;
-        }
-        ap = ((desc >> 4) & 3) | ((desc >> 7) & 4);
-        switch (desc & 3) {
-        case 0: /* Page translation fault.  */
-            fi->type = ARMFault_Translation;
-            goto do_fault;
-        case 1: /* 64k page.  */
-            phys_addr = (desc & 0xffff0000) | (address & 0xffff);
-            xn = desc & (1 << 15);
-            *page_size = 0x10000;
-            break;
-        case 2: case 3: /* 4k page.  */
-            phys_addr = (desc & 0xfffff000) | (address & 0xfff);
-            xn = desc & 1;
-            *page_size = 0x1000;
-            break;
-        default:
-            /* Never happens, but compiler isn't smart enough to tell.  */
-            abort();
-        }
-    }
-    if (domain_prot == 3) {
-        *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
-    } else {
-        if (pxn && !regime_is_user(env, mmu_idx)) {
-            xn = 1;
-        }
-        if (xn && access_type == MMU_INST_FETCH) {
-            fi->type = ARMFault_Permission;
-            goto do_fault;
-        }
-
-        if (arm_feature(env, ARM_FEATURE_V6K) &&
-                (regime_sctlr(env, mmu_idx) & SCTLR_AFE)) {
-            /* The simplified model uses AP[0] as an access control bit.  */
-            if ((ap & 1) == 0) {
-                /* Access flag fault.  */
-                fi->type = ARMFault_AccessFlag;
-                goto do_fault;
-            }
-            *prot = simple_ap_to_rw_prot(env, mmu_idx, ap >> 1);
-        } else {
-            *prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot);
-        }
-        if (*prot && !xn) {
-            *prot |= PAGE_EXEC;
-        }
-        if (!(*prot & (1 << access_type))) {
-            /* Access permission fault.  */
-            fi->type = ARMFault_Permission;
-            goto do_fault;
-        }
-    }
-    if (ns) {
-        /*
-         * The NS bit will (as required by the architecture) have no effect if
-         * the CPU doesn't support TZ or this is a non-secure translation
-         * regime, because the attribute will already be non-secure.
-         */
-        attrs->secure = false;
-    }
-    *phys_ptr = phys_addr;
-    return false;
-do_fault:
-    fi->domain = domain;
-    fi->level = level;
-    return true;
-}
-
-/*
- * check_s2_mmu_setup
- * @cpu:        ARMCPU
- * @is_aa64:    True if the translation regime is in AArch64 state
- * @startlevel: Suggested starting level
- * @inputsize:  Bitsize of IPAs
- * @stride:     Page-table stride (See the ARM ARM)
- *
- * Returns true if the suggested S2 translation parameters are OK and
- * false otherwise.
- */
-static bool check_s2_mmu_setup(ARMCPU *cpu, bool is_aa64, int level,
-                               int inputsize, int stride)
-{
-    const int grainsize = stride + 3;
-    int startsizecheck;
-
-    /* Negative levels are never allowed.  */
-    if (level < 0) {
-        return false;
-    }
-
-    startsizecheck = inputsize - ((3 - level) * stride + grainsize);
-    if (startsizecheck < 1 || startsizecheck > stride + 4) {
-        return false;
-    }
-
-    if (is_aa64) {
-        CPUARMState *env = &cpu->env;
-        unsigned int pamax = arm_pamax(cpu);
-
-        switch (stride) {
-        case 13: /* 64KB Pages.  */
-            if (level == 0 || (level == 1 && pamax <= 42)) {
-                return false;
-            }
-            break;
-        case 11: /* 16KB Pages.  */
-            if (level == 0 || (level == 1 && pamax <= 40)) {
-                return false;
-            }
-            break;
-        case 9: /* 4KB Pages.  */
-            if (level == 0 && pamax <= 42) {
-                return false;
-            }
-            break;
-        default:
-            g_assert_not_reached();
-        }
-
-        /* Inputsize checks.  */
-        if (inputsize > pamax &&
-            (arm_el_is_aa64(env, 1) || inputsize > 40)) {
-            /* This is CONSTRAINED UNPREDICTABLE and we choose to fault.  */
-            return false;
-        }
-    } else {
-        /* AArch32 only supports 4KB pages. Assert on that.  */
-        assert(stride == 9);
-
-        if (level == 0) {
-            return false;
-        }
-    }
-    return true;
-}
-
-/*
- * Translate from the 4-bit stage 2 representation of
- * memory attributes (without cache-allocation hints) to
- * the 8-bit representation of the stage 1 MAIR registers
- * (which includes allocation hints).
- *
- * ref: shared/translation/attrs/S2AttrDecode()
- *      .../S2ConvertAttrsHints()
- */
-static uint8_t convert_stage2_attrs(CPUARMState *env, uint8_t s2attrs)
-{
-    uint8_t hiattr = extract32(s2attrs, 2, 2);
-    uint8_t loattr = extract32(s2attrs, 0, 2);
-    uint8_t hihint = 0, lohint = 0;
-
-    if (hiattr != 0) { /* normal memory */
-        if (arm_hcr_el2_eff(env) & HCR_CD) { /* cache disabled */
-            hiattr = loattr = 1; /* non-cacheable */
-        } else {
-            if (hiattr != 1) { /* Write-through or write-back */
-                hihint = 3; /* RW allocate */
-            }
-            if (loattr != 1) { /* Write-through or write-back */
-                lohint = 3; /* RW allocate */
-            }
-        }
-    }
-
-    return (hiattr << 6) | (hihint << 4) | (loattr << 2) | lohint;
-}
-#endif /* !CONFIG_USER_ONLY */
-
-static int aa64_va_parameter_tbi(uint64_t tcr, ARMMMUIdx mmu_idx)
-{
-    if (regime_has_2_ranges(mmu_idx)) {
-        return extract64(tcr, 37, 2);
-    } else if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
-        return 0; /* VTCR_EL2 */
-    } else {
-        /* Replicate the single TBI bit so we always have 2 bits.  */
-        return extract32(tcr, 20, 1) * 3;
-    }
-}
-
-static int aa64_va_parameter_tbid(uint64_t tcr, ARMMMUIdx mmu_idx)
-{
-    if (regime_has_2_ranges(mmu_idx)) {
-        return extract64(tcr, 51, 2);
-    } else if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
-        return 0; /* VTCR_EL2 */
-    } else {
-        /* Replicate the single TBID bit so we always have 2 bits.  */
-        return extract32(tcr, 29, 1) * 3;
-    }
-}
-
-static int aa64_va_parameter_tcma(uint64_t tcr, ARMMMUIdx mmu_idx)
-{
-    if (regime_has_2_ranges(mmu_idx)) {
-        return extract64(tcr, 57, 2);
-    } else {
-        /* Replicate the single TCMA bit so we always have 2 bits.  */
-        return extract32(tcr, 30, 1) * 3;
-    }
-}
-
-ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va,
-                                   ARMMMUIdx mmu_idx, bool data)
-{
-    uint64_t tcr = regime_tcr(env, mmu_idx)->raw_tcr;
-    bool epd, hpd, using16k, using64k;
-    int select, tsz, tbi, max_tsz;
-
-    if (!regime_has_2_ranges(mmu_idx)) {
-        select = 0;
-        tsz = extract32(tcr, 0, 6);
-        using64k = extract32(tcr, 14, 1);
-        using16k = extract32(tcr, 15, 1);
-        if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
-            /* VTCR_EL2 */
-            hpd = false;
-        } else {
-            hpd = extract32(tcr, 24, 1);
-        }
-        epd = false;
-    } else {
-        /*
-         * Bit 55 is always between the two regions, and is canonical for
-         * determining if address tagging is enabled.
-         */
-        select = extract64(va, 55, 1);
-        if (!select) {
-            tsz = extract32(tcr, 0, 6);
-            epd = extract32(tcr, 7, 1);
-            using64k = extract32(tcr, 14, 1);
-            using16k = extract32(tcr, 15, 1);
-            hpd = extract64(tcr, 41, 1);
-        } else {
-            int tg = extract32(tcr, 30, 2);
-            using16k = tg == 1;
-            using64k = tg == 3;
-            tsz = extract32(tcr, 16, 6);
-            epd = extract32(tcr, 23, 1);
-            hpd = extract64(tcr, 42, 1);
-        }
-    }
-
-    if (cpu_isar_feature(aa64_st, env_archcpu(env))) {
-        max_tsz = 48 - using64k;
-    } else {
-        max_tsz = 39;
-    }
-
-    tsz = MIN(tsz, max_tsz);
-    tsz = MAX(tsz, 16);  /* TODO: ARMv8.2-LVA  */
-
-    /* Present TBI as a composite with TBID.  */
-    tbi = aa64_va_parameter_tbi(tcr, mmu_idx);
-    if (!data) {
-        tbi &= ~aa64_va_parameter_tbid(tcr, mmu_idx);
-    }
-    tbi = (tbi >> select) & 1;
-
-    return (ARMVAParameters) {
-        .tsz = tsz,
-        .select = select,
-        .tbi = tbi,
-        .epd = epd,
-        .hpd = hpd,
-        .using16k = using16k,
-        .using64k = using64k,
-    };
-}
-
-#ifndef CONFIG_USER_ONLY
-static ARMVAParameters aa32_va_parameters(CPUARMState *env, uint32_t va,
-                                          ARMMMUIdx mmu_idx)
-{
-    uint64_t tcr = regime_tcr(env, mmu_idx)->raw_tcr;
-    uint32_t el = regime_el(env, mmu_idx);
-    int select, tsz;
-    bool epd, hpd;
-
-    assert(mmu_idx != ARMMMUIdx_Stage2_S);
-
-    if (mmu_idx == ARMMMUIdx_Stage2) {
-        /* VTCR */
-        bool sext = extract32(tcr, 4, 1);
-        bool sign = extract32(tcr, 3, 1);
-
-        /*
-         * If the sign-extend bit is not the same as t0sz[3], the result
-         * is unpredictable. Flag this as a guest error.
-         */
-        if (sign != sext) {
-            qemu_log_mask(LOG_GUEST_ERROR,
-                          "AArch32: VTCR.S / VTCR.T0SZ[3] mismatch\n");
-        }
-        tsz = sextract32(tcr, 0, 4) + 8;
-        select = 0;
-        hpd = false;
-        epd = false;
-    } else if (el == 2) {
-        /* HTCR */
-        tsz = extract32(tcr, 0, 3);
-        select = 0;
-        hpd = extract64(tcr, 24, 1);
-        epd = false;
-    } else {
-        int t0sz = extract32(tcr, 0, 3);
-        int t1sz = extract32(tcr, 16, 3);
-
-        if (t1sz == 0) {
-            select = va > (0xffffffffu >> t0sz);
-        } else {
-            /* Note that we will detect errors later.  */
-            select = va >= ~(0xffffffffu >> t1sz);
-        }
-        if (!select) {
-            tsz = t0sz;
-            epd = extract32(tcr, 7, 1);
-            hpd = extract64(tcr, 41, 1);
-        } else {
-            tsz = t1sz;
-            epd = extract32(tcr, 23, 1);
-            hpd = extract64(tcr, 42, 1);
-        }
-        /* For aarch32, hpd0 is not enabled without t2e as well.  */
-        hpd &= extract32(tcr, 6, 1);
-    }
-
-    return (ARMVAParameters) {
-        .tsz = tsz,
-        .select = select,
-        .epd = epd,
-        .hpd = hpd,
-    };
-}
-
-/**
- * get_phys_addr_lpae: perform one stage of page table walk, LPAE format
- *
- * Returns false if the translation was successful. Otherwise, phys_ptr, attrs,
- * prot and page_size may not be filled in, and the populated fsr value provides
- * information on why the translation aborted, in the format of a long-format
- * DFSR/IFSR fault register, with the following caveats:
- *  * the WnR bit is never set (the caller must do this).
- *
- * @env: CPUARMState
- * @address: virtual address to get physical address for
- * @access_type: MMU_DATA_LOAD, MMU_DATA_STORE or MMU_INST_FETCH
- * @mmu_idx: MMU index indicating required translation regime
- * @s1_is_el0: if @mmu_idx is ARMMMUIdx_Stage2 (so this is a stage 2 page table
- *             walk), must be true if this is stage 2 of a stage 1+2 walk for an
- *             EL0 access). If @mmu_idx is anything else, @s1_is_el0 is ignored.
- * @phys_ptr: set to the physical address corresponding to the virtual address
- * @attrs: set to the memory transaction attributes to use
- * @prot: set to the permissions for the page containing phys_ptr
- * @page_size_ptr: set to the size of the page containing phys_ptr
- * @fi: set to fault info if the translation fails
- * @cacheattrs: (if non-NULL) set to the cacheability/shareability attributes
- */
-static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address,
-                               MMUAccessType access_type, ARMMMUIdx mmu_idx,
-                               bool s1_is_el0,
-                               hwaddr *phys_ptr, MemTxAttrs *txattrs, int *prot,
-                               target_ulong *page_size_ptr,
-                               ARMMMUFaultInfo *fi, ARMCacheAttrs *cacheattrs)
-{
-    ARMCPU *cpu = env_archcpu(env);
-    CPUState *cs = CPU(cpu);
-    /* Read an LPAE long-descriptor translation table. */
-    ARMFaultType fault_type = ARMFault_Translation;
-    uint32_t level;
-    ARMVAParameters param;
-    uint64_t ttbr;
-    hwaddr descaddr, indexmask, indexmask_grainsize;
-    uint32_t tableattrs;
-    target_ulong page_size;
-    uint32_t attrs;
-    int32_t stride;
-    int addrsize, inputsize;
-    TCR *tcr = regime_tcr(env, mmu_idx);
-    int ap, ns, xn, pxn;
-    uint32_t el = regime_el(env, mmu_idx);
-    uint64_t descaddrmask;
-    bool aarch64 = arm_el_is_aa64(env, el);
-    bool guarded = false;
-
-    /* TODO: This code does not support shareability levels. */
-    if (aarch64) {
-        param = aa64_va_parameters(env, address, mmu_idx,
-                                   access_type != MMU_INST_FETCH);
-        level = 0;
-        addrsize = 64 - 8 * param.tbi;
-        inputsize = 64 - param.tsz;
-    } else {
-        param = aa32_va_parameters(env, address, mmu_idx);
-        level = 1;
-        addrsize = (mmu_idx == ARMMMUIdx_Stage2 ? 40 : 32);
-        inputsize = addrsize - param.tsz;
-    }
-
-    /*
-     * We determined the region when collecting the parameters, but we
-     * have not yet validated that the address is valid for the region.
-     * Extract the top bits and verify that they all match select.
-     *
-     * For aa32, if inputsize == addrsize, then we have selected the
-     * region by exclusion in aa32_va_parameters and there is no more
-     * validation to do here.
-     */
-    if (inputsize < addrsize) {
-        target_ulong top_bits = sextract64(address, inputsize,
-                                           addrsize - inputsize);
-        if (-top_bits != param.select) {
-            /* The gap between the two regions is a Translation fault */
-            fault_type = ARMFault_Translation;
-            goto do_fault;
-        }
-    }
-
-    if (param.using64k) {
-        stride = 13;
-    } else if (param.using16k) {
-        stride = 11;
-    } else {
-        stride = 9;
-    }
-
-    /*
-     * Note that QEMU ignores shareability and cacheability attributes,
-     * so we don't need to do anything with the SH, ORGN, IRGN fields
-     * in the TTBCR.  Similarly, TTBCR:A1 selects whether we get the
-     * ASID from TTBR0 or TTBR1, but QEMU's TLB doesn't currently
-     * implement any ASID-like capability so we can ignore it (instead
-     * we will always flush the TLB any time the ASID is changed).
-     */
-    ttbr = regime_ttbr(env, mmu_idx, param.select);
-
-    /*
-     * Here we should have set up all the parameters for the translation:
-     * inputsize, ttbr, epd, stride, tbi
-     */
-
-    if (param.epd) {
-        /*
-         * Translation table walk disabled => Translation fault on TLB miss
-         * Note: This is always 0 on 64-bit EL2 and EL3.
-         */
-        goto do_fault;
-    }
-
-    if (mmu_idx != ARMMMUIdx_Stage2 && mmu_idx != ARMMMUIdx_Stage2_S) {
-        /*
-         * The starting level depends on the virtual address size (which can
-         * be up to 48 bits) and the translation granule size. It indicates
-         * the number of strides (stride bits at a time) needed to
-         * consume the bits of the input address. In the pseudocode this is:
-         *  level = 4 - RoundUp((inputsize - grainsize) / stride)
-         * where their 'inputsize' is our 'inputsize', 'grainsize' is
-         * our 'stride + 3' and 'stride' is our 'stride'.
-         * Applying the usual "rounded up m/n is (m+n-1)/n" and simplifying:
-         * = 4 - (inputsize - stride - 3 + stride - 1) / stride
-         * = 4 - (inputsize - 4) / stride;
-         */
-        level = 4 - (inputsize - 4) / stride;
-    } else {
-        /*
-         * For stage 2 translations the starting level is specified by the
-         * VTCR_EL2.SL0 field (whose interpretation depends on the page size)
-         */
-        uint32_t sl0 = extract32(tcr->raw_tcr, 6, 2);
-        uint32_t startlevel;
-        bool ok;
-
-        if (!aarch64 || stride == 9) {
-            /* AArch32 or 4KB pages */
-            startlevel = 2 - sl0;
-
-            if (cpu_isar_feature(aa64_st, cpu)) {
-                startlevel &= 3;
-            }
-        } else {
-            /* 16KB or 64KB pages */
-            startlevel = 3 - sl0;
-        }
-
-        /* Check that the starting level is valid. */
-        ok = check_s2_mmu_setup(cpu, aarch64, startlevel,
-                                inputsize, stride);
-        if (!ok) {
-            fault_type = ARMFault_Translation;
-            goto do_fault;
-        }
-        level = startlevel;
-    }
-
-    indexmask_grainsize = (1ULL << (stride + 3)) - 1;
-    indexmask = (1ULL << (inputsize - (stride * (4 - level)))) - 1;
-
-    /* Now we can extract the actual base address from the TTBR */
-    descaddr = extract64(ttbr, 0, 48);
-    /*
-     * We rely on this masking to clear the RES0 bits at the bottom of the TTBR
-     * and also to mask out CnP (bit 0) which could validly be non-zero.
-     */
-    descaddr &= ~indexmask;
-
-    /*
-     * The address field in the descriptor goes up to bit 39 for ARMv7
-     * but up to bit 47 for ARMv8, but we use the descaddrmask
-     * up to bit 39 for AArch32, because we don't need other bits in that case
-     * to construct next descriptor address (anyway they should be all zeroes).
-     */
-    descaddrmask = ((1ull << (aarch64 ? 48 : 40)) - 1) &
-                   ~indexmask_grainsize;
-
-    /*
-     * Secure accesses start with the page table in secure memory and
-     * can be downgraded to non-secure at any step. Non-secure accesses
-     * remain non-secure. We implement this by just ORing in the NSTable/NS
-     * bits at each step.
-     */
-    tableattrs = regime_is_secure(env, mmu_idx) ? 0 : (1 << 4);
-    for (;;) {
-        uint64_t descriptor;
-        bool nstable;
-
-        descaddr |= (address >> (stride * (4 - level))) & indexmask;
-        descaddr &= ~7ULL;
-        nstable = extract32(tableattrs, 4, 1);
-        descriptor = arm_ldq_ptw(cs, descaddr, !nstable, mmu_idx, fi);
-        if (fi->type != ARMFault_None) {
-            goto do_fault;
-        }
-
-        if (!(descriptor & 1) ||
-            (!(descriptor & 2) && (level == 3))) {
-            /* Invalid, or the Reserved level 3 encoding */
-            goto do_fault;
-        }
-        descaddr = descriptor & descaddrmask;
-
-        if ((descriptor & 2) && (level < 3)) {
-            /*
-             * Table entry. The top five bits are attributes which may
-             * propagate down through lower levels of the table (and
-             * which are all arranged so that 0 means "no effect", so
-             * we can gather them up by ORing in the bits at each level).
-             */
-            tableattrs |= extract64(descriptor, 59, 5);
-            level++;
-            indexmask = indexmask_grainsize;
-            continue;
-        }
-        /*
-         * Block entry at level 1 or 2, or page entry at level 3.
-         * These are basically the same thing, although the number
-         * of bits we pull in from the vaddr varies.
-         */
-        page_size = (1ULL << ((stride * (4 - level)) + 3));
-        descaddr |= (address & (page_size - 1));
-        /* Extract attributes from the descriptor */
-        attrs = extract64(descriptor, 2, 10)
-            | (extract64(descriptor, 52, 12) << 10);
-
-        if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
-            /* Stage 2 table descriptors do not include any attribute fields */
-            break;
-        }
-        /* Merge in attributes from table descriptors */
-        attrs |= nstable << 3; /* NS */
-        guarded = extract64(descriptor, 50, 1);  /* GP */
-        if (param.hpd) {
-            /* HPD disables all the table attributes except NSTable.  */
-            break;
-        }
-        attrs |= extract32(tableattrs, 0, 2) << 11;     /* XN, PXN */
-        /*
-         * The sense of AP[1] vs APTable[0] is reversed, as APTable[0] == 1
-         * means "force PL1 access only", which means forcing AP[1] to 0.
-         */
-        attrs &= ~(extract32(tableattrs, 2, 1) << 4);   /* !APT[0] => AP[1] */
-        attrs |= extract32(tableattrs, 3, 1) << 5;      /* APT[1] => AP[2] */
-        break;
-    }
-    /*
-     * Here descaddr is the final physical address,
-     * and attributes are all in attrs.
-     */
-    fault_type = ARMFault_AccessFlag;
-    if ((attrs & (1 << 8)) == 0) {
-        /* Access flag */
-        goto do_fault;
-    }
-
-    ap = extract32(attrs, 4, 2);
-
-    if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
-        ns = mmu_idx == ARMMMUIdx_Stage2;
-        xn = extract32(attrs, 11, 2);
-        *prot = get_S2prot(env, ap, xn, s1_is_el0);
-    } else {
-        ns = extract32(attrs, 3, 1);
-        xn = extract32(attrs, 12, 1);
-        pxn = extract32(attrs, 11, 1);
-        *prot = get_S1prot(env, mmu_idx, aarch64, ap, ns, xn, pxn);
-    }
-
-    fault_type = ARMFault_Permission;
-    if (!(*prot & (1 << access_type))) {
-        goto do_fault;
-    }
-
-    if (ns) {
-        /*
-         * The NS bit will (as required by the architecture) have no effect if
-         * the CPU doesn't support TZ or this is a non-secure translation
-         * regime, because the attribute will already be non-secure.
-         */
-        txattrs->secure = false;
-    }
-    /* When in aarch64 mode, and BTI is enabled, remember GP in the IOTLB.  */
-    if (aarch64 && guarded && cpu_isar_feature(aa64_bti, cpu)) {
-        arm_tlb_bti_gp(txattrs) = true;
-    }
-
-    if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
-        cacheattrs->attrs = convert_stage2_attrs(env, extract32(attrs, 0, 4));
-    } else {
-        /* Index into MAIR registers for cache attributes */
-        uint8_t attrindx = extract32(attrs, 0, 3);
-        uint64_t mair = env->cp15.mair_el[regime_el(env, mmu_idx)];
-        assert(attrindx <= 7);
-        cacheattrs->attrs = extract64(mair, attrindx * 8, 8);
-    }
-    cacheattrs->shareability = extract32(attrs, 6, 2);
-
-    *phys_ptr = descaddr;
-    *page_size_ptr = page_size;
-    return false;
-
-do_fault:
-    fi->type = fault_type;
-    fi->level = level;
-    /* Tag the error as S2 for failed S1 PTW at S2 or ordinary S2.  */
-    fi->stage2 = fi->s1ptw || (mmu_idx == ARMMMUIdx_Stage2 ||
-                               mmu_idx == ARMMMUIdx_Stage2_S);
-    fi->s1ns = mmu_idx == ARMMMUIdx_Stage2;
-    return true;
-}
-
-static inline void get_phys_addr_pmsav7_default(CPUARMState *env,
-                                                ARMMMUIdx mmu_idx,
-                                                int32_t address, int *prot)
-{
-    if (!arm_feature(env, ARM_FEATURE_M)) {
-        *prot = PAGE_READ | PAGE_WRITE;
-        switch (address) {
-        case 0xF0000000 ... 0xFFFFFFFF:
-            if (regime_sctlr(env, mmu_idx) & SCTLR_V) {
-                /* hivecs execing is ok */
-                *prot |= PAGE_EXEC;
-            }
-            break;
-        case 0x00000000 ... 0x7FFFFFFF:
-            *prot |= PAGE_EXEC;
-            break;
-        }
-    } else {
-        /*
-         * Default system address map for M profile cores.
-         * The architecture specifies which regions are execute-never;
-         * at the MPU level no other checks are defined.
-         */
-        switch (address) {
-        case 0x00000000 ... 0x1fffffff: /* ROM */
-        case 0x20000000 ... 0x3fffffff: /* SRAM */
-        case 0x60000000 ... 0x7fffffff: /* RAM */
-        case 0x80000000 ... 0x9fffffff: /* RAM */
-            *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
-            break;
-        case 0x40000000 ... 0x5fffffff: /* Peripheral */
-        case 0xa0000000 ... 0xbfffffff: /* Device */
-        case 0xc0000000 ... 0xdfffffff: /* Device */
-        case 0xe0000000 ... 0xffffffff: /* System */
-            *prot = PAGE_READ | PAGE_WRITE;
-            break;
-        default:
-            g_assert_not_reached();
-        }
-    }
-}
-
-static bool pmsav7_use_background_region(ARMCPU *cpu,
-                                         ARMMMUIdx mmu_idx, bool is_user)
-{
-    /*
-     * Return true if we should use the default memory map as a
-     * "background" region if there are no hits against any MPU regions.
-     */
-    CPUARMState *env = &cpu->env;
-
-    if (is_user) {
-        return false;
-    }
-
-    if (arm_feature(env, ARM_FEATURE_M)) {
-        return env->v7m.mpu_ctrl[regime_is_secure(env, mmu_idx)]
-            & R_V7M_MPU_CTRL_PRIVDEFENA_MASK;
-    } else {
-        return regime_sctlr(env, mmu_idx) & SCTLR_BR;
-    }
-}
-
-static inline bool m_is_ppb_region(CPUARMState *env, uint32_t address)
-{
-    /* True if address is in the M profile PPB region 0xe0000000 - 0xe00fffff */
-    return arm_feature(env, ARM_FEATURE_M) &&
-        extract32(address, 20, 12) == 0xe00;
-}
-
-static inline bool m_is_system_region(CPUARMState *env, uint32_t address)
-{
-    /*
-     * True if address is in the M profile system region
-     * 0xe0000000 - 0xffffffff
-     */
-    return arm_feature(env, ARM_FEATURE_M) && extract32(address, 29, 3) == 0x7;
-}
-
-static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address,
-                                 MMUAccessType access_type, ARMMMUIdx mmu_idx,
-                                 hwaddr *phys_ptr, int *prot,
-                                 target_ulong *page_size,
-                                 ARMMMUFaultInfo *fi)
-{
-    ARMCPU *cpu = env_archcpu(env);
-    int n;
-    bool is_user = regime_is_user(env, mmu_idx);
-
-    *phys_ptr = address;
-    *page_size = TARGET_PAGE_SIZE;
-    *prot = 0;
-
-    if (regime_translation_disabled(env, mmu_idx) ||
-        m_is_ppb_region(env, address)) {
-        /*
-         * MPU disabled or M profile PPB access: use default memory map.
-         * The other case which uses the default memory map in the
-         * v7M ARM ARM pseudocode is exception vector reads from the vector
-         * table. In QEMU those accesses are done in arm_v7m_load_vector(),
-         * which always does a direct read using address_space_ldl(), rather
-         * than going via this function, so we don't need to check that here.
-         */
-        get_phys_addr_pmsav7_default(env, mmu_idx, address, prot);
-    } else { /* MPU enabled */
-        for (n = (int)cpu->pmsav7_dregion - 1; n >= 0; n--) {
-            /* region search */
-            uint32_t base = env->pmsav7.drbar[n];
-            uint32_t rsize = extract32(env->pmsav7.drsr[n], 1, 5);
-            uint32_t rmask;
-            bool srdis = false;
-
-            if (!(env->pmsav7.drsr[n] & 0x1)) {
-                continue;
-            }
-
-            if (!rsize) {
-                qemu_log_mask(LOG_GUEST_ERROR,
-                              "DRSR[%d]: Rsize field cannot be 0\n", n);
-                continue;
-            }
-            rsize++;
-            rmask = (1ull << rsize) - 1;
-
-            if (base & rmask) {
-                qemu_log_mask(LOG_GUEST_ERROR,
-                              "DRBAR[%d]: 0x%" PRIx32 " misaligned "
-                              "to DRSR region size, mask = 0x%" PRIx32 "\n",
-                              n, base, rmask);
-                continue;
-            }
-
-            if (address < base || address > base + rmask) {
-                /*
-                 * Address not in this region. We must check whether the
-                 * region covers addresses in the same page as our address.
-                 * In that case we must not report a size that covers the
-                 * whole page for a subsequent hit against a different MPU
-                 * region or the background region, because it would result in
-                 * incorrect TLB hits for subsequent accesses to addresses that
-                 * are in this MPU region.
-                 */
-                if (ranges_overlap(base, rmask,
-                                   address & TARGET_PAGE_MASK,
-                                   TARGET_PAGE_SIZE)) {
-                    *page_size = 1;
-                }
-                continue;
-            }
-
-            /* Region matched */
-
-            if (rsize >= 8) { /* no subregions for regions < 256 bytes */
-                int i, snd;
-                uint32_t srdis_mask;
-
-                rsize -= 3; /* sub region size (power of 2) */
-                snd = ((address - base) >> rsize) & 0x7;
-                srdis = extract32(env->pmsav7.drsr[n], snd + 8, 1);
-
-                srdis_mask = srdis ? 0x3 : 0x0;
-                for (i = 2; i <= 8 && rsize < TARGET_PAGE_BITS; i *= 2) {
-                    /*
-                     * This will check in groups of 2, 4 and then 8, whether
-                     * the subregion bits are consistent. rsize is incremented
-                     * back up to give the region size, considering consistent
-                     * adjacent subregions as one region. Stop testing if rsize
-                     * is already big enough for an entire QEMU page.
-                     */
-                    int snd_rounded = snd & ~(i - 1);
-                    uint32_t srdis_multi = extract32(env->pmsav7.drsr[n],
-                                                     snd_rounded + 8, i);
-                    if (srdis_mask ^ srdis_multi) {
-                        break;
-                    }
-                    srdis_mask = (srdis_mask << i) | srdis_mask;
-                    rsize++;
-                }
-            }
-            if (srdis) {
-                continue;
-            }
-            if (rsize < TARGET_PAGE_BITS) {
-                *page_size = 1 << rsize;
-            }
-            break;
-        }
-
-        if (n == -1) { /* no hits */
-            if (!pmsav7_use_background_region(cpu, mmu_idx, is_user)) {
-                /* background fault */
-                fi->type = ARMFault_Background;
-                return true;
-            }
-            get_phys_addr_pmsav7_default(env, mmu_idx, address, prot);
-        } else { /* a MPU hit! */
-            uint32_t ap = extract32(env->pmsav7.dracr[n], 8, 3);
-            uint32_t xn = extract32(env->pmsav7.dracr[n], 12, 1);
-
-            if (m_is_system_region(env, address)) {
-                /* System space is always execute never */
-                xn = 1;
-            }
-
-            if (is_user) { /* User mode AP bit decoding */
-                switch (ap) {
-                case 0:
-                case 1:
-                case 5:
-                    break; /* no access */
-                case 3:
-                    *prot |= PAGE_WRITE;
-                    /* fall through */
-                case 2:
-                case 6:
-                    *prot |= PAGE_READ | PAGE_EXEC;
-                    break;
-                case 7:
-                    /* for v7M, same as 6; for R profile a reserved value */
-                    if (arm_feature(env, ARM_FEATURE_M)) {
-                        *prot |= PAGE_READ | PAGE_EXEC;
-                        break;
-                    }
-                    /* fall through */
-                default:
-                    qemu_log_mask(LOG_GUEST_ERROR,
-                                  "DRACR[%d]: Bad value for AP bits: 0x%"
-                                  PRIx32 "\n", n, ap);
-                }
-            } else { /* Priv. mode AP bits decoding */
-                switch (ap) {
-                case 0:
-                    break; /* no access */
-                case 1:
-                case 2:
-                case 3:
-                    *prot |= PAGE_WRITE;
-                    /* fall through */
-                case 5:
-                case 6:
-                    *prot |= PAGE_READ | PAGE_EXEC;
-                    break;
-                case 7:
-                    /* for v7M, same as 6; for R profile a reserved value */
-                    if (arm_feature(env, ARM_FEATURE_M)) {
-                        *prot |= PAGE_READ | PAGE_EXEC;
-                        break;
-                    }
-                    /* fall through */
-                default:
-                    qemu_log_mask(LOG_GUEST_ERROR,
-                                  "DRACR[%d]: Bad value for AP bits: 0x%"
-                                  PRIx32 "\n", n, ap);
-                }
-            }
-
-            /* execute never */
-            if (xn) {
-                *prot &= ~PAGE_EXEC;
-            }
-        }
-    }
-
-    fi->type = ARMFault_Permission;
-    fi->level = 1;
-    return !(*prot & (1 << access_type));
-}
-
-static bool v8m_is_sau_exempt(CPUARMState *env,
-                              uint32_t address, MMUAccessType access_type)
-{
-    /*
-     * The architecture specifies that certain address ranges are
-     * exempt from v8M SAU/IDAU checks.
-     */
-    return
-        (access_type == MMU_INST_FETCH && m_is_system_region(env, address)) ||
-        (address >= 0xe0000000 && address <= 0xe0002fff) ||
-        (address >= 0xe000e000 && address <= 0xe000efff) ||
-        (address >= 0xe002e000 && address <= 0xe002efff) ||
-        (address >= 0xe0040000 && address <= 0xe0041fff) ||
-        (address >= 0xe00ff000 && address <= 0xe00fffff);
-}
-
-void v8m_security_lookup(CPUARMState *env, uint32_t address,
-                                MMUAccessType access_type, ARMMMUIdx mmu_idx,
-                                V8M_SAttributes *sattrs)
-{
-    /*
-     * Look up the security attributes for this address. Compare the
-     * pseudocode SecurityCheck() function.
-     * We assume the caller has zero-initialized *sattrs.
-     */
-    ARMCPU *cpu = env_archcpu(env);
-    int r;
-    bool idau_exempt = false, idau_ns = true, idau_nsc = true;
-    int idau_region = IREGION_NOTVALID;
-    uint32_t addr_page_base = address & TARGET_PAGE_MASK;
-    uint32_t addr_page_limit = addr_page_base + (TARGET_PAGE_SIZE - 1);
-
-    if (cpu->idau) {
-        IDAUInterfaceClass *iic = IDAU_INTERFACE_GET_CLASS(cpu->idau);
-        IDAUInterface *ii = IDAU_INTERFACE(cpu->idau);
-
-        iic->check(ii, address, &idau_region, &idau_exempt, &idau_ns,
-                   &idau_nsc);
-    }
-
-    if (access_type == MMU_INST_FETCH && extract32(address, 28, 4) == 0xf) {
-        /* 0xf0000000..0xffffffff is always S for insn fetches */
-        return;
-    }
-
-    if (idau_exempt || v8m_is_sau_exempt(env, address, access_type)) {
-        sattrs->ns = !regime_is_secure(env, mmu_idx);
-        return;
-    }
-
-    if (idau_region != IREGION_NOTVALID) {
-        sattrs->irvalid = true;
-        sattrs->iregion = idau_region;
-    }
-
-    switch (env->sau.ctrl & 3) {
-    case 0: /* SAU.ENABLE == 0, SAU.ALLNS == 0 */
-        break;
-    case 2: /* SAU.ENABLE == 0, SAU.ALLNS == 1 */
-        sattrs->ns = true;
-        break;
-    default: /* SAU.ENABLE == 1 */
-        for (r = 0; r < cpu->sau_sregion; r++) {
-            if (env->sau.rlar[r] & 1) {
-                uint32_t base = env->sau.rbar[r] & ~0x1f;
-                uint32_t limit = env->sau.rlar[r] | 0x1f;
-
-                if (base <= address && limit >= address) {
-                    if (base > addr_page_base || limit < addr_page_limit) {
-                        sattrs->subpage = true;
-                    }
-                    if (sattrs->srvalid) {
-                        /*
-                         * If we hit in more than one region then we must report
-                         * as Secure, not NS-Callable, with no valid region
-                         * number info.
-                         */
-                        sattrs->ns = false;
-                        sattrs->nsc = false;
-                        sattrs->sregion = 0;
-                        sattrs->srvalid = false;
-                        break;
-                    } else {
-                        if (env->sau.rlar[r] & 2) {
-                            sattrs->nsc = true;
-                        } else {
-                            sattrs->ns = true;
-                        }
-                        sattrs->srvalid = true;
-                        sattrs->sregion = r;
-                    }
-                } else {
-                    /*
-                     * Address not in this region. We must check whether the
-                     * region covers addresses in the same page as our address.
-                     * In that case we must not report a size that covers the
-                     * whole page for a subsequent hit against a different MPU
-                     * region or the background region, because it would result
-                     * in incorrect TLB hits for subsequent accesses to
-                     * addresses that are in this MPU region.
-                     */
-                    if (limit >= base &&
-                        ranges_overlap(base, limit - base + 1,
-                                       addr_page_base,
-                                       TARGET_PAGE_SIZE)) {
-                        sattrs->subpage = true;
-                    }
-                }
-            }
-        }
-        break;
-    }
-
-    /*
-     * The IDAU will override the SAU lookup results if it specifies
-     * higher security than the SAU does.
-     */
-    if (!idau_ns) {
-        if (sattrs->ns || (!idau_nsc && sattrs->nsc)) {
-            sattrs->ns = false;
-            sattrs->nsc = idau_nsc;
-        }
-    }
-}
-
-bool pmsav8_mpu_lookup(CPUARMState *env, uint32_t address,
-                              MMUAccessType access_type, ARMMMUIdx mmu_idx,
-                              hwaddr *phys_ptr, MemTxAttrs *txattrs,
-                              int *prot, bool *is_subpage,
-                              ARMMMUFaultInfo *fi, uint32_t *mregion)
-{
-    /*
-     * Perform a PMSAv8 MPU lookup (without also doing the SAU check
-     * that a full phys-to-virt translation does).
-     * mregion is (if not NULL) set to the region number which matched,
-     * or -1 if no region number is returned (MPU off, address did not
-     * hit a region, address hit in multiple regions).
-     * We set is_subpage to true if the region hit doesn't cover the
-     * entire TARGET_PAGE the address is within.
-     */
-    ARMCPU *cpu = env_archcpu(env);
-    bool is_user = regime_is_user(env, mmu_idx);
-    uint32_t secure = regime_is_secure(env, mmu_idx);
-    int n;
-    int matchregion = -1;
-    bool hit = false;
-    uint32_t addr_page_base = address & TARGET_PAGE_MASK;
-    uint32_t addr_page_limit = addr_page_base + (TARGET_PAGE_SIZE - 1);
-
-    *is_subpage = false;
-    *phys_ptr = address;
-    *prot = 0;
-    if (mregion) {
-        *mregion = -1;
-    }
-
-    /*
-     * Unlike the ARM ARM pseudocode, we don't need to check whether this
-     * was an exception vector read from the vector table (which is always
-     * done using the default system address map), because those accesses
-     * are done in arm_v7m_load_vector(), which always does a direct
-     * read using address_space_ldl(), rather than going via this function.
-     */
-    if (regime_translation_disabled(env, mmu_idx)) { /* MPU disabled */
-        hit = true;
-    } else if (m_is_ppb_region(env, address)) {
-        hit = true;
-    } else {
-        if (pmsav7_use_background_region(cpu, mmu_idx, is_user)) {
-            hit = true;
-        }
-
-        for (n = (int)cpu->pmsav7_dregion - 1; n >= 0; n--) {
-            /* region search */
-            /*
-             * Note that the base address is bits [31:5] from the register
-             * with bits [4:0] all zeroes, but the limit address is bits
-             * [31:5] from the register with bits [4:0] all ones.
-             */
-            uint32_t base = env->pmsav8.rbar[secure][n] & ~0x1f;
-            uint32_t limit = env->pmsav8.rlar[secure][n] | 0x1f;
-
-            if (!(env->pmsav8.rlar[secure][n] & 0x1)) {
-                /* Region disabled */
-                continue;
-            }
-
-            if (address < base || address > limit) {
-                /*
-                 * Address not in this region. We must check whether the
-                 * region covers addresses in the same page as our address.
-                 * In that case we must not report a size that covers the
-                 * whole page for a subsequent hit against a different MPU
-                 * region or the background region, because it would result in
-                 * incorrect TLB hits for subsequent accesses to addresses that
-                 * are in this MPU region.
-                 */
-                if (limit >= base &&
-                    ranges_overlap(base, limit - base + 1,
-                                   addr_page_base,
-                                   TARGET_PAGE_SIZE)) {
-                    *is_subpage = true;
-                }
-                continue;
-            }
-
-            if (base > addr_page_base || limit < addr_page_limit) {
-                *is_subpage = true;
-            }
-
-            if (matchregion != -1) {
-                /*
-                 * Multiple regions match -- always a failure (unlike
-                 * PMSAv7 where highest-numbered-region wins)
-                 */
-                fi->type = ARMFault_Permission;
-                fi->level = 1;
-                return true;
-            }
-
-            matchregion = n;
-            hit = true;
-        }
-    }
-
-    if (!hit) {
-        /* background fault */
-        fi->type = ARMFault_Background;
-        return true;
-    }
-
-    if (matchregion == -1) {
-        /* hit using the background region */
-        get_phys_addr_pmsav7_default(env, mmu_idx, address, prot);
-    } else {
-        uint32_t ap = extract32(env->pmsav8.rbar[secure][matchregion], 1, 2);
-        uint32_t xn = extract32(env->pmsav8.rbar[secure][matchregion], 0, 1);
-        bool pxn = false;
-
-        if (arm_feature(env, ARM_FEATURE_V8_1M)) {
-            pxn = extract32(env->pmsav8.rlar[secure][matchregion], 4, 1);
-        }
-
-        if (m_is_system_region(env, address)) {
-            /* System space is always execute never */
-            xn = 1;
-        }
-
-        *prot = simple_ap_to_rw_prot(env, mmu_idx, ap);
-        if (*prot && !xn && !(pxn && !is_user)) {
-            *prot |= PAGE_EXEC;
-        }
-        /*
-         * We don't need to look the attribute up in the MAIR0/MAIR1
-         * registers because that only tells us about cacheability.
-         */
-        if (mregion) {
-            *mregion = matchregion;
-        }
-    }
-
-    fi->type = ARMFault_Permission;
-    fi->level = 1;
-    return !(*prot & (1 << access_type));
-}
-
-
-static bool get_phys_addr_pmsav8(CPUARMState *env, uint32_t address,
-                                 MMUAccessType access_type, ARMMMUIdx mmu_idx,
-                                 hwaddr *phys_ptr, MemTxAttrs *txattrs,
-                                 int *prot, target_ulong *page_size,
-                                 ARMMMUFaultInfo *fi)
-{
-    uint32_t secure = regime_is_secure(env, mmu_idx);
-    V8M_SAttributes sattrs = {};
-    bool ret;
-    bool mpu_is_subpage;
-
-    if (arm_feature(env, ARM_FEATURE_M_SECURITY)) {
-        v8m_security_lookup(env, address, access_type, mmu_idx, &sattrs);
-        if (access_type == MMU_INST_FETCH) {
-            /*
-             * Instruction fetches always use the MMU bank and the
-             * transaction attribute determined by the fetch address,
-             * regardless of CPU state. This is painful for QEMU
-             * to handle, because it would mean we need to encode
-             * into the mmu_idx not just the (user, negpri) information
-             * for the current security state but also that for the
-             * other security state, which would balloon the number
-             * of mmu_idx values needed alarmingly.
-             * Fortunately we can avoid this because it's not actually
-             * possible to arbitrarily execute code from memory with
-             * the wrong security attribute: it will always generate
-             * an exception of some kind or another, apart from the
-             * special case of an NS CPU executing an SG instruction
-             * in S&NSC memory. So we always just fail the translation
-             * here and sort things out in the exception handler
-             * (including possibly emulating an SG instruction).
-             */
-            if (sattrs.ns != !secure) {
-                if (sattrs.nsc) {
-                    fi->type = ARMFault_QEMU_NSCExec;
-                } else {
-                    fi->type = ARMFault_QEMU_SFault;
-                }
-                *page_size = sattrs.subpage ? 1 : TARGET_PAGE_SIZE;
-                *phys_ptr = address;
-                *prot = 0;
-                return true;
-            }
-        } else {
-            /*
-             * For data accesses we always use the MMU bank indicated
-             * by the current CPU state, but the security attributes
-             * might downgrade a secure access to nonsecure.
-             */
-            if (sattrs.ns) {
-                txattrs->secure = false;
-            } else if (!secure) {
-                /*
-                 * NS access to S memory must fault.
-                 * Architecturally we should first check whether the
-                 * MPU information for this address indicates that we
-                 * are doing an unaligned access to Device memory, which
-                 * should generate a UsageFault instead. QEMU does not
-                 * currently check for that kind of unaligned access though.
-                 * If we added it we would need to do so as a special case
-                 * for M_FAKE_FSR_SFAULT in arm_v7m_cpu_do_interrupt().
-                 */
-                fi->type = ARMFault_QEMU_SFault;
-                *page_size = sattrs.subpage ? 1 : TARGET_PAGE_SIZE;
-                *phys_ptr = address;
-                *prot = 0;
-                return true;
-            }
-        }
-    }
-
-    ret = pmsav8_mpu_lookup(env, address, access_type, mmu_idx, phys_ptr,
-                            txattrs, prot, &mpu_is_subpage, fi, NULL);
-    *page_size = sattrs.subpage || mpu_is_subpage ? 1 : TARGET_PAGE_SIZE;
-    return ret;
-}
-
-static bool get_phys_addr_pmsav5(CPUARMState *env, uint32_t address,
-                                 MMUAccessType access_type, ARMMMUIdx mmu_idx,
-                                 hwaddr *phys_ptr, int *prot,
-                                 ARMMMUFaultInfo *fi)
-{
-    int n;
-    uint32_t mask;
-    uint32_t base;
-    bool is_user = regime_is_user(env, mmu_idx);
-
-    if (regime_translation_disabled(env, mmu_idx)) {
-        /* MPU disabled.  */
-        *phys_ptr = address;
-        *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
-        return false;
-    }
-
-    *phys_ptr = address;
-    for (n = 7; n >= 0; n--) {
-        base = env->cp15.c6_region[n];
-        if ((base & 1) == 0) {
-            continue;
-        }
-        mask = 1 << ((base >> 1) & 0x1f);
-        /*
-         * Keep this shift separate from the above to avoid an
-         * (undefined) << 32
-         */
-        mask = (mask << 1) - 1;
-        if (((base ^ address) & ~mask) == 0) {
-            break;
-        }
-    }
-    if (n < 0) {
-        fi->type = ARMFault_Background;
-        return true;
-    }
-
-    if (access_type == MMU_INST_FETCH) {
-        mask = env->cp15.pmsav5_insn_ap;
-    } else {
-        mask = env->cp15.pmsav5_data_ap;
-    }
-    mask = (mask >> (n * 4)) & 0xf;
-    switch (mask) {
-    case 0:
-        fi->type = ARMFault_Permission;
-        fi->level = 1;
-        return true;
-    case 1:
-        if (is_user) {
-            fi->type = ARMFault_Permission;
-            fi->level = 1;
-            return true;
-        }
-        *prot = PAGE_READ | PAGE_WRITE;
-        break;
-    case 2:
-        *prot = PAGE_READ;
-        if (!is_user) {
-            *prot |= PAGE_WRITE;
-        }
-        break;
-    case 3:
-        *prot = PAGE_READ | PAGE_WRITE;
-        break;
-    case 5:
-        if (is_user) {
-            fi->type = ARMFault_Permission;
-            fi->level = 1;
-            return true;
-        }
-        *prot = PAGE_READ;
-        break;
-    case 6:
-        *prot = PAGE_READ;
-        break;
-    default:
-        /* Bad permission.  */
-        fi->type = ARMFault_Permission;
-        fi->level = 1;
-        return true;
-    }
-    *prot |= PAGE_EXEC;
-    return false;
-}
-
-/*
- * Combine either inner or outer cacheability attributes for normal
- * memory, according to table D4-42 and pseudocode procedure
- * CombineS1S2AttrHints() of ARM DDI 0487B.b (the ARMv8 ARM).
- *
- * NB: only stage 1 includes allocation hints (RW bits), leading to
- * some asymmetry.
- */
-static uint8_t combine_cacheattr_nibble(uint8_t s1, uint8_t s2)
-{
-    if (s1 == 4 || s2 == 4) {
-        /* non-cacheable has precedence */
-        return 4;
-    } else if (extract32(s1, 2, 2) == 0 || extract32(s1, 2, 2) == 2) {
-        /* stage 1 write-through takes precedence */
-        return s1;
-    } else if (extract32(s2, 2, 2) == 2) {
-        /*
-         * stage 2 write-through takes precedence, but the allocation hint
-         * is still taken from stage 1
-         */
-        return (2 << 2) | extract32(s1, 0, 2);
-    } else { /* write-back */
-        return s1;
-    }
-}
-
-/*
- * Combine S1 and S2 cacheability/shareability attributes, per D4.5.4
- * and CombineS1S2Desc()
- *
- * @s1:      Attributes from stage 1 walk
- * @s2:      Attributes from stage 2 walk
- */
-static ARMCacheAttrs combine_cacheattrs(ARMCacheAttrs s1, ARMCacheAttrs s2)
-{
-    uint8_t s1lo, s2lo, s1hi, s2hi;
-    ARMCacheAttrs ret;
-    bool tagged = false;
-
-    if (s1.attrs == 0xf0) {
-        tagged = true;
-        s1.attrs = 0xff;
-    }
-
-    s1lo = extract32(s1.attrs, 0, 4);
-    s2lo = extract32(s2.attrs, 0, 4);
-    s1hi = extract32(s1.attrs, 4, 4);
-    s2hi = extract32(s2.attrs, 4, 4);
-
-    /* Combine shareability attributes (table D4-43) */
-    if (s1.shareability == 2 || s2.shareability == 2) {
-        /* if either are outer-shareable, the result is outer-shareable */
-        ret.shareability = 2;
-    } else if (s1.shareability == 3 || s2.shareability == 3) {
-        /* if either are inner-shareable, the result is inner-shareable */
-        ret.shareability = 3;
-    } else {
-        /* both non-shareable */
-        ret.shareability = 0;
-    }
-
-    /* Combine memory type and cacheability attributes */
-    if (s1hi == 0 || s2hi == 0) {
-        /* Device has precedence over normal */
-        if (s1lo == 0 || s2lo == 0) {
-            /* nGnRnE has precedence over anything */
-            ret.attrs = 0;
-        } else if (s1lo == 4 || s2lo == 4) {
-            /* non-Reordering has precedence over Reordering */
-            ret.attrs = 4;  /* nGnRE */
-        } else if (s1lo == 8 || s2lo == 8) {
-            /* non-Gathering has precedence over Gathering */
-            ret.attrs = 8;  /* nGRE */
-        } else {
-            ret.attrs = 0xc; /* GRE */
-        }
-
-        /*
-         * Any location for which the resultant memory type is any
-         * type of Device memory is always treated as Outer Shareable.
-         */
-        ret.shareability = 2;
-    } else { /* Normal memory */
-        /* Outer/inner cacheability combine independently */
-        ret.attrs = combine_cacheattr_nibble(s1hi, s2hi) << 4
-                  | combine_cacheattr_nibble(s1lo, s2lo);
-
-        if (ret.attrs == 0x44) {
-            /*
-             * Any location for which the resultant memory type is Normal
-             * Inner Non-cacheable, Outer Non-cacheable is always treated
-             * as Outer Shareable.
-             */
-            ret.shareability = 2;
-        }
-    }
-
-    /* TODO: CombineS1S2Desc does not consider transient, only WB, RWA. */
-    if (tagged && ret.attrs == 0xff) {
-        ret.attrs = 0xf0;
-    }
-
-    return ret;
-}
-
-
-/*
- * get_phys_addr - get the physical address for this virtual address
- *
- * Find the physical address corresponding to the given virtual address,
- * by doing a translation table walk on MMU based systems or using the
- * MPU state on MPU based systems.
- *
- * Returns false if the translation was successful. Otherwise, phys_ptr, attrs,
- * prot and page_size may not be filled in, and the populated fsr value provides
- * information on why the translation aborted, in the format of a
- * DFSR/IFSR fault register, with the following caveats:
- *  * we honour the short vs long DFSR format differences.
- *  * the WnR bit is never set (the caller must do this).
- *  * for PSMAv5 based systems we don't bother to return a full FSR format
- *    value.
- *
- * @env: CPUARMState
- * @address: virtual address to get physical address for
- * @access_type: 0 for read, 1 for write, 2 for execute
- * @mmu_idx: MMU index indicating required translation regime
- * @phys_ptr: set to the physical address corresponding to the virtual address
- * @attrs: set to the memory transaction attributes to use
- * @prot: set to the permissions for the page containing phys_ptr
- * @page_size: set to the size of the page containing phys_ptr
- * @fi: set to fault info if the translation fails
- * @cacheattrs: (if non-NULL) set to the cacheability/shareability attributes
- */
-bool get_phys_addr(CPUARMState *env, target_ulong address,
-                   MMUAccessType access_type, ARMMMUIdx mmu_idx,
-                   hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
-                   target_ulong *page_size,
-                   ARMMMUFaultInfo *fi, ARMCacheAttrs *cacheattrs)
-{
-    ARMMMUIdx s1_mmu_idx = stage_1_mmu_idx(mmu_idx);
-
-    if (mmu_idx != s1_mmu_idx) {
-        /*
-         * Call ourselves recursively to do the stage 1 and then stage 2
-         * translations if mmu_idx is a two-stage regime.
-         */
-        if (arm_feature(env, ARM_FEATURE_EL2)) {
-            hwaddr ipa;
-            int s2_prot;
-            int ret;
-            ARMCacheAttrs cacheattrs2 = {};
-            ARMMMUIdx s2_mmu_idx;
-            bool is_el0;
-
-            ret = get_phys_addr(env, address, access_type, s1_mmu_idx, &ipa,
-                                attrs, prot, page_size, fi, cacheattrs);
-
-            /* If S1 fails or S2 is disabled, return early.  */
-            if (ret || regime_translation_disabled(env, ARMMMUIdx_Stage2)) {
-                *phys_ptr = ipa;
-                return ret;
-            }
-
-            s2_mmu_idx = attrs->secure ? ARMMMUIdx_Stage2_S : ARMMMUIdx_Stage2;
-            is_el0 = mmu_idx == ARMMMUIdx_E10_0 || mmu_idx == ARMMMUIdx_SE10_0;
-
-            /* S1 is done. Now do S2 translation.  */
-            ret = get_phys_addr_lpae(env, ipa, access_type, s2_mmu_idx, is_el0,
-                                     phys_ptr, attrs, &s2_prot,
-                                     page_size, fi, &cacheattrs2);
-            fi->s2addr = ipa;
-            /* Combine the S1 and S2 perms.  */
-            *prot &= s2_prot;
-
-            /* If S2 fails, return early.  */
-            if (ret) {
-                return ret;
-            }
-
-            /* Combine the S1 and S2 cache attributes. */
-            if (arm_hcr_el2_eff(env) & HCR_DC) {
-                /*
-                 * HCR.DC forces the first stage attributes to
-                 *  Normal Non-Shareable,
-                 *  Inner Write-Back Read-Allocate Write-Allocate,
-                 *  Outer Write-Back Read-Allocate Write-Allocate.
-                 * Do not overwrite Tagged within attrs.
-                 */
-                if (cacheattrs->attrs != 0xf0) {
-                    cacheattrs->attrs = 0xff;
-                }
-                cacheattrs->shareability = 0;
-            }
-            *cacheattrs = combine_cacheattrs(*cacheattrs, cacheattrs2);
-
-            /* Check if IPA translates to secure or non-secure PA space. */
-            if (arm_is_secure_below_el3(env)) {
-                if (attrs->secure) {
-                    attrs->secure =
-                        !(env->cp15.vstcr_el2.raw_tcr & (VSTCR_SA | VSTCR_SW));
-                } else {
-                    attrs->secure =
-                        !((env->cp15.vtcr_el2.raw_tcr & (VTCR_NSA | VTCR_NSW))
-                        || (env->cp15.vstcr_el2.raw_tcr & VSTCR_SA));
-                }
-            }
-            return 0;
-        } else {
-            /*
-             * For non-EL2 CPUs a stage1+stage2 translation is just stage 1.
-             */
-            mmu_idx = stage_1_mmu_idx(mmu_idx);
-        }
-    }
-
-    /*
-     * The page table entries may downgrade secure to non-secure, but
-     * cannot upgrade an non-secure translation regime's attributes
-     * to secure.
-     */
-    attrs->secure = regime_is_secure(env, mmu_idx);
-    attrs->user = regime_is_user(env, mmu_idx);
-
-    /*
-     * Fast Context Switch Extension. This doesn't exist at all in v8.
-     * In v7 and earlier it affects all stage 1 translations.
-     */
-    if (address < 0x02000000 && mmu_idx != ARMMMUIdx_Stage2
-        && !arm_feature(env, ARM_FEATURE_V8)) {
-        if (regime_el(env, mmu_idx) == 3) {
-            address += env->cp15.fcseidr_s;
-        } else {
-            address += env->cp15.fcseidr_ns;
-        }
-    }
-
-    if (arm_feature(env, ARM_FEATURE_PMSA)) {
-        bool ret;
-        *page_size = TARGET_PAGE_SIZE;
-
-        if (arm_feature(env, ARM_FEATURE_V8)) {
-            /* PMSAv8 */
-            ret = get_phys_addr_pmsav8(env, address, access_type, mmu_idx,
-                                       phys_ptr, attrs, prot, page_size, fi);
-        } else if (arm_feature(env, ARM_FEATURE_V7)) {
-            /* PMSAv7 */
-            ret = get_phys_addr_pmsav7(env, address, access_type, mmu_idx,
-                                       phys_ptr, prot, page_size, fi);
-        } else {
-            /* Pre-v7 MPU */
-            ret = get_phys_addr_pmsav5(env, address, access_type, mmu_idx,
-                                       phys_ptr, prot, fi);
-        }
-        qemu_log_mask(CPU_LOG_MMU, "PMSA MPU lookup for %s at 0x%08" PRIx32
-                      " mmu_idx %u -> %s (prot %c%c%c)\n",
-                      access_type == MMU_DATA_LOAD ? "reading" :
-                      (access_type == MMU_DATA_STORE ? "writing" : "execute"),
-                      (uint32_t)address, mmu_idx,
-                      ret ? "Miss" : "Hit",
-                      *prot & PAGE_READ ? 'r' : '-',
-                      *prot & PAGE_WRITE ? 'w' : '-',
-                      *prot & PAGE_EXEC ? 'x' : '-');
-
-        return ret;
-    }
-
-    /* Definitely a real MMU, not an MPU */
-
-    if (regime_translation_disabled(env, mmu_idx)) {
-        uint64_t hcr;
-        uint8_t memattr;
-
-        /*
-         * MMU disabled.  S1 addresses within aa64 translation regimes are
-         * still checked for bounds -- see AArch64.TranslateAddressS1Off.
-         */
-        if (mmu_idx != ARMMMUIdx_Stage2 && mmu_idx != ARMMMUIdx_Stage2_S) {
-            int r_el = regime_el(env, mmu_idx);
-            if (arm_el_is_aa64(env, r_el)) {
-                int pamax = arm_pamax(env_archcpu(env));
-                uint64_t tcr = env->cp15.tcr_el[r_el].raw_tcr;
-                int addrtop, tbi;
-
-                tbi = aa64_va_parameter_tbi(tcr, mmu_idx);
-                if (access_type == MMU_INST_FETCH) {
-                    tbi &= ~aa64_va_parameter_tbid(tcr, mmu_idx);
-                }
-                tbi = (tbi >> extract64(address, 55, 1)) & 1;
-                addrtop = (tbi ? 55 : 63);
-
-                if (extract64(address, pamax, addrtop - pamax + 1) != 0) {
-                    fi->type = ARMFault_AddressSize;
-                    fi->level = 0;
-                    fi->stage2 = false;
-                    return 1;
-                }
-
-                /*
-                 * When TBI is disabled, we've just validated that all of the
-                 * bits above PAMax are zero, so logically we only need to
-                 * clear the top byte for TBI.  But it's clearer to follow
-                 * the pseudocode set of addrdesc.paddress.
-                 */
-                address = extract64(address, 0, 52);
-            }
-        }
-        *phys_ptr = address;
-        *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
-        *page_size = TARGET_PAGE_SIZE;
-
-        /* Fill in cacheattr a-la AArch64.TranslateAddressS1Off. */
-        hcr = arm_hcr_el2_eff(env);
-        cacheattrs->shareability = 0;
-        if (hcr & HCR_DC) {
-            if (hcr & HCR_DCT) {
-                memattr = 0xf0;  /* Tagged, Normal, WB, RWA */
-            } else {
-                memattr = 0xff;  /* Normal, WB, RWA */
-            }
-        } else if (access_type == MMU_INST_FETCH) {
-            if (regime_sctlr(env, mmu_idx) & SCTLR_I) {
-                memattr = 0xee;  /* Normal, WT, RA, NT */
-            } else {
-                memattr = 0x44;  /* Normal, NC, No */
-            }
-            cacheattrs->shareability = 2; /* outer sharable */
-        } else {
-            memattr = 0x00;      /* Device, nGnRnE */
-        }
-        cacheattrs->attrs = memattr;
-        return 0;
-    }
-
-    if (regime_using_lpae_format(env, mmu_idx)) {
-        return get_phys_addr_lpae(env, address, access_type, mmu_idx, false,
-                                  phys_ptr, attrs, prot, page_size,
-                                  fi, cacheattrs);
-    } else if (regime_sctlr(env, mmu_idx) & SCTLR_XP) {
-        return get_phys_addr_v6(env, address, access_type, mmu_idx,
-                                phys_ptr, attrs, prot, page_size, fi);
-    } else {
-        return get_phys_addr_v5(env, address, access_type, mmu_idx,
-                                    phys_ptr, prot, page_size, fi);
-    }
-}
-
-hwaddr arm_cpu_get_phys_page_attrs_debug(CPUState *cs, vaddr addr,
-                                         MemTxAttrs *attrs)
-{
-    ARMCPU *cpu = ARM_CPU(cs);
-    CPUARMState *env = &cpu->env;
-    hwaddr phys_addr;
-    target_ulong page_size;
-    int prot;
-    bool ret;
-    ARMMMUFaultInfo fi = {};
-    ARMMMUIdx mmu_idx = arm_mmu_idx(env);
-    ARMCacheAttrs cacheattrs = {};
-
-    *attrs = (MemTxAttrs) {};
-
-    ret = get_phys_addr(env, addr, MMU_DATA_LOAD, mmu_idx, &phys_addr,
-                        attrs, &prot, &page_size, &fi, &cacheattrs);
-
-    if (ret) {
-        return -1;
-    }
-    return phys_addr;
-}
-
-#endif
-
 /* Note that signed overflow is undefined in C.  The following routines are
    careful to use unsigned types where modulo arithmetic is required.
    Failure to do so _will_ break on newer gcc.  */
diff --git a/target/arm/tcg/pauth_helper.c b/target/arm/tcg/pauth_helper.c
index cd6df18150..11021d1a2f 100644
--- a/target/arm/tcg/pauth_helper.c
+++ b/target/arm/tcg/pauth_helper.c
@@ -25,7 +25,7 @@ 
 #include "exec/helper-proto.h"
 #include "tcg/tcg-gvec-desc.h"
 #include "qemu/xxhash.h"
-
+#include "cpu-mmu.h"
 
 static uint64_t pac_cell_shuffle(uint64_t i)
 {
diff --git a/target/arm/tcg/sysemu/m_helper.c b/target/arm/tcg/sysemu/m_helper.c
index 77c9fd0b6e..59787c5650 100644
--- a/target/arm/tcg/sysemu/m_helper.c
+++ b/target/arm/tcg/sysemu/m_helper.c
@@ -13,7 +13,7 @@ 
 #include "qemu/main-loop.h"
 #include "exec/exec-all.h"
 #include "semihosting/common-semi.h"
-
+#include "cpu-mmu.h"
 #include "tcg/m_helper.h"
 
 /*
diff --git a/target/arm/tcg/sysemu/tlb_helper.c b/target/arm/tcg/sysemu/tlb_helper.c
index 586f602989..1290612ed9 100644
--- a/target/arm/tcg/sysemu/tlb_helper.c
+++ b/target/arm/tcg/sysemu/tlb_helper.c
@@ -9,6 +9,7 @@ 
 #include "cpu.h"
 #include "internals.h"
 #include "exec/exec-all.h"
+#include "cpu-mmu.h"
 #include "tcg/tlb_helper.h"
 
 /*
diff --git a/target/arm/meson.build b/target/arm/meson.build
index b75392e3e9..3e7cea7604 100644
--- a/target/arm/meson.build
+++ b/target/arm/meson.build
@@ -1,6 +1,7 @@ 
 arm_ss = ss.source_set()
 arm_ss.add(files(
   'cpu.c',
+  'cpu-mmu.c',
   'gdbstub.c',
   'cpu_tcg.c',
 ))
@@ -17,6 +18,7 @@  arm_softmmu_ss = ss.source_set()
 arm_softmmu_ss.add(files(
   'arch_dump.c',
   'arm-powerctl.c',
+  'cpu-mmu-sysemu.c',
   'cpu-sysemu.c',
   'machine.c',
   'monitor.c',