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qemu-android / qemu-android / 41b9dc407ed4157b7e5b2caab871ff22d51a549b / . / target-arm / helper.c
blob: bdb842cc4583a76671d4ac10b10b3bd0cc56fcbe [file] [log] [blame]
#include "qemu/osdep.h"
#include "cpu.h"
#include "internals.h"
#include "exec/gdbstub.h"
#include "exec/helper-proto.h"
#include "qemu/host-utils.h"
#include "sysemu/arch_init.h"
#include "sysemu/sysemu.h"
#include "qemu/bitops.h"
#include "qemu/crc32c.h"
#include "exec/exec-all.h"
#include "exec/cpu_ldst.h"
#include "arm_ldst.h"
#include <zlib.h> /* For crc32 */
#include "exec/semihost.h"
#include "sysemu/kvm.h"
#define ARM_CPU_FREQ 1000000000 /* FIXME: 1 GHz, should be configurable */
#ifndef CONFIG_USER_ONLY
static bool get_phys_addr(CPUARMState *env, target_ulong address,
int access_type, ARMMMUIdx mmu_idx,
hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
target_ulong *page_size, uint32_t *fsr,
ARMMMUFaultInfo *fi);
static bool get_phys_addr_lpae(CPUARMState *env, target_ulong address,
int access_type, ARMMMUIdx mmu_idx,
hwaddr *phys_ptr, MemTxAttrs *txattrs, int *prot,
target_ulong *page_size_ptr, uint32_t *fsr,
ARMMMUFaultInfo *fi);
/* Definitions for the PMCCNTR and PMCR registers */
#define PMCRD 0x8
#define PMCRC 0x4
#define PMCRE 0x1
#endif
static int vfp_gdb_get_reg(CPUARMState *env, uint8_t *buf, int reg)
{
int nregs;
/* VFP data registers are always little-endian. */
nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16;
if (reg < nregs) {
stfq_le_p(buf, env->vfp.regs[reg]);
return 8;
}
if (arm_feature(env, ARM_FEATURE_NEON)) {
/* Aliases for Q regs. */
nregs += 16;
if (reg < nregs) {
stfq_le_p(buf, env->vfp.regs[(reg - 32) * 2]);
stfq_le_p(buf + 8, env->vfp.regs[(reg - 32) * 2 + 1]);
return 16;
}
}
switch (reg - nregs) {
case 0: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSID]); return 4;
case 1: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSCR]); return 4;
case 2: stl_p(buf, env->vfp.xregs[ARM_VFP_FPEXC]); return 4;
}
return 0;
}
static int vfp_gdb_set_reg(CPUARMState *env, uint8_t *buf, int reg)
{
int nregs;
nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16;
if (reg < nregs) {
env->vfp.regs[reg] = ldfq_le_p(buf);
return 8;
}
if (arm_feature(env, ARM_FEATURE_NEON)) {
nregs += 16;
if (reg < nregs) {
env->vfp.regs[(reg - 32) * 2] = ldfq_le_p(buf);
env->vfp.regs[(reg - 32) * 2 + 1] = ldfq_le_p(buf + 8);
return 16;
}
}
switch (reg - nregs) {
case 0: env->vfp.xregs[ARM_VFP_FPSID] = ldl_p(buf); return 4;
case 1: env->vfp.xregs[ARM_VFP_FPSCR] = ldl_p(buf); return 4;
case 2: env->vfp.xregs[ARM_VFP_FPEXC] = ldl_p(buf) & (1 << 30); return 4;
}
return 0;
}
static int aarch64_fpu_gdb_get_reg(CPUARMState *env, uint8_t *buf, int reg)
{
switch (reg) {
case 0 ... 31:
/* 128 bit FP register */
stfq_le_p(buf, env->vfp.regs[reg * 2]);
stfq_le_p(buf + 8, env->vfp.regs[reg * 2 + 1]);
return 16;
case 32:
/* FPSR */
stl_p(buf, vfp_get_fpsr(env));
return 4;
case 33:
/* FPCR */
stl_p(buf, vfp_get_fpcr(env));
return 4;
default:
return 0;
}
}
static int aarch64_fpu_gdb_set_reg(CPUARMState *env, uint8_t *buf, int reg)
{
switch (reg) {
case 0 ... 31:
/* 128 bit FP register */
env->vfp.regs[reg * 2] = ldfq_le_p(buf);
env->vfp.regs[reg * 2 + 1] = ldfq_le_p(buf + 8);
return 16;
case 32:
/* FPSR */
vfp_set_fpsr(env, ldl_p(buf));
return 4;
case 33:
/* FPCR */
vfp_set_fpcr(env, ldl_p(buf));
return 4;
default:
return 0;
}
}
static uint64_t raw_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
assert(ri->fieldoffset);
if (cpreg_field_is_64bit(ri)) {
return CPREG_FIELD64(env, ri);
} else {
return CPREG_FIELD32(env, ri);
}
}
static void raw_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
assert(ri->fieldoffset);
if (cpreg_field_is_64bit(ri)) {
CPREG_FIELD64(env, ri) = value;
} else {
CPREG_FIELD32(env, ri) = value;
}
}
static void *raw_ptr(CPUARMState *env, const ARMCPRegInfo *ri)
{
return (char *)env + ri->fieldoffset;
}
uint64_t read_raw_cp_reg(CPUARMState *env, const ARMCPRegInfo *ri)
{
/* Raw read of a coprocessor register (as needed for migration, etc). */
if (ri->type & ARM_CP_CONST) {
return ri->resetvalue;
} else if (ri->raw_readfn) {
return ri->raw_readfn(env, ri);
} else if (ri->readfn) {
return ri->readfn(env, ri);
} else {
return raw_read(env, ri);
}
}
static void write_raw_cp_reg(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t v)
{
/* Raw write of a coprocessor register (as needed for migration, etc).
* Note that constant registers are treated as write-ignored; the
* caller should check for success by whether a readback gives the
* value written.
*/
if (ri->type & ARM_CP_CONST) {
return;
} else if (ri->raw_writefn) {
ri->raw_writefn(env, ri, v);
} else if (ri->writefn) {
ri->writefn(env, ri, v);
} else {
raw_write(env, ri, v);
}
}
static bool raw_accessors_invalid(const ARMCPRegInfo *ri)
{
/* Return true if the regdef would cause an assertion if you called
* read_raw_cp_reg() or write_raw_cp_reg() on it (ie if it is a
* program bug for it not to have the NO_RAW flag).
* NB that returning false here doesn't necessarily mean that calling
* read/write_raw_cp_reg() is safe, because we can't distinguish "has
* read/write access functions which are safe for raw use" from "has
* read/write access functions which have side effects but has forgotten
* to provide raw access functions".
* The tests here line up with the conditions in read/write_raw_cp_reg()
* and assertions in raw_read()/raw_write().
*/
if ((ri->type & ARM_CP_CONST) ||
ri->fieldoffset ||
((ri->raw_writefn || ri->writefn) && (ri->raw_readfn || ri->readfn))) {
return false;
}
return true;
}
bool write_cpustate_to_list(ARMCPU *cpu)
{
/* Write the coprocessor state from cpu->env to the (index,value) list. */
int i;
bool ok = true;
for (i = 0; i < cpu->cpreg_array_len; i++) {
uint32_t regidx = kvm_to_cpreg_id(cpu->cpreg_indexes[i]);
const ARMCPRegInfo *ri;
ri = get_arm_cp_reginfo(cpu->cp_regs, regidx);
if (!ri) {
ok = false;
continue;
}
if (ri->type & ARM_CP_NO_RAW) {
continue;
}
cpu->cpreg_values[i] = read_raw_cp_reg(&cpu->env, ri);
}
return ok;
}
bool write_list_to_cpustate(ARMCPU *cpu)
{
int i;
bool ok = true;
for (i = 0; i < cpu->cpreg_array_len; i++) {
uint32_t regidx = kvm_to_cpreg_id(cpu->cpreg_indexes[i]);
uint64_t v = cpu->cpreg_values[i];
const ARMCPRegInfo *ri;
ri = get_arm_cp_reginfo(cpu->cp_regs, regidx);
if (!ri) {
ok = false;
continue;
}
if (ri->type & ARM_CP_NO_RAW) {
continue;
}
/* Write value and confirm it reads back as written
* (to catch read-only registers and partially read-only
* registers where the incoming migration value doesn't match)
*/
write_raw_cp_reg(&cpu->env, ri, v);
if (read_raw_cp_reg(&cpu->env, ri) != v) {
ok = false;
}
}
return ok;
}
static void add_cpreg_to_list(gpointer key, gpointer opaque)
{
ARMCPU *cpu = opaque;
uint64_t regidx;
const ARMCPRegInfo *ri;
regidx = *(uint32_t *)key;
ri = get_arm_cp_reginfo(cpu->cp_regs, regidx);
if (!(ri->type & (ARM_CP_NO_RAW|ARM_CP_ALIAS))) {
cpu->cpreg_indexes[cpu->cpreg_array_len] = cpreg_to_kvm_id(regidx);
/* The value array need not be initialized at this point */
cpu->cpreg_array_len++;
}
}
static void count_cpreg(gpointer key, gpointer opaque)
{
ARMCPU *cpu = opaque;
uint64_t regidx;
const ARMCPRegInfo *ri;
regidx = *(uint32_t *)key;
ri = get_arm_cp_reginfo(cpu->cp_regs, regidx);
if (!(ri->type & (ARM_CP_NO_RAW|ARM_CP_ALIAS))) {
cpu->cpreg_array_len++;
}
}
static gint cpreg_key_compare(gconstpointer a, gconstpointer b)
{
uint64_t aidx = cpreg_to_kvm_id(*(uint32_t *)a);
uint64_t bidx = cpreg_to_kvm_id(*(uint32_t *)b);
if (aidx > bidx) {
return 1;
}
if (aidx < bidx) {
return -1;
}
return 0;
}
void init_cpreg_list(ARMCPU *cpu)
{
/* Initialise the cpreg_tuples[] array based on the cp_regs hash.
* Note that we require cpreg_tuples[] to be sorted by key ID.
*/
GList *keys;
int arraylen;
keys = g_hash_table_get_keys(cpu->cp_regs);
keys = g_list_sort(keys, cpreg_key_compare);
cpu->cpreg_array_len = 0;
g_list_foreach(keys, count_cpreg, cpu);
arraylen = cpu->cpreg_array_len;
cpu->cpreg_indexes = g_new(uint64_t, arraylen);
cpu->cpreg_values = g_new(uint64_t, arraylen);
cpu->cpreg_vmstate_indexes = g_new(uint64_t, arraylen);
cpu->cpreg_vmstate_values = g_new(uint64_t, arraylen);
cpu->cpreg_vmstate_array_len = cpu->cpreg_array_len;
cpu->cpreg_array_len = 0;
g_list_foreach(keys, add_cpreg_to_list, cpu);
assert(cpu->cpreg_array_len == arraylen);
g_list_free(keys);
}
/*
* Some registers are not accessible if EL3.NS=0 and EL3 is using AArch32 but
* they are accessible when EL3 is using AArch64 regardless of EL3.NS.
*
* access_el3_aa32ns: Used to check AArch32 register views.
* access_el3_aa32ns_aa64any: Used to check both AArch32/64 register views.
*/
static CPAccessResult access_el3_aa32ns(CPUARMState *env,
const ARMCPRegInfo *ri,
bool isread)
{
bool secure = arm_is_secure_below_el3(env);
assert(!arm_el_is_aa64(env, 3));
if (secure) {
return CP_ACCESS_TRAP_UNCATEGORIZED;
}
return CP_ACCESS_OK;
}
static CPAccessResult access_el3_aa32ns_aa64any(CPUARMState *env,
const ARMCPRegInfo *ri,
bool isread)
{
if (!arm_el_is_aa64(env, 3)) {
return access_el3_aa32ns(env, ri, isread);
}
return CP_ACCESS_OK;
}
/* Some secure-only AArch32 registers trap to EL3 if used from
* Secure EL1 (but are just ordinary UNDEF in other non-EL3 contexts).
* Note that an access from Secure EL1 can only happen if EL3 is AArch64.
* We assume that the .access field is set to PL1_RW.
*/
static CPAccessResult access_trap_aa32s_el1(CPUARMState *env,
const ARMCPRegInfo *ri,
bool isread)
{
if (arm_current_el(env) == 3) {
return CP_ACCESS_OK;
}
if (arm_is_secure_below_el3(env)) {
return CP_ACCESS_TRAP_EL3;
}
/* This will be EL1 NS and EL2 NS, which just UNDEF */
return CP_ACCESS_TRAP_UNCATEGORIZED;
}
/* Check for traps to "powerdown debug" registers, which are controlled
* by MDCR.TDOSA
*/
static CPAccessResult access_tdosa(CPUARMState *env, const ARMCPRegInfo *ri,
bool isread)
{
int el = arm_current_el(env);
if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TDOSA)
&& !arm_is_secure_below_el3(env)) {
return CP_ACCESS_TRAP_EL2;
}
if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TDOSA)) {
return CP_ACCESS_TRAP_EL3;
}
return CP_ACCESS_OK;
}
/* Check for traps to "debug ROM" registers, which are controlled
* by MDCR_EL2.TDRA for EL2 but by the more general MDCR_EL3.TDA for EL3.
*/
static CPAccessResult access_tdra(CPUARMState *env, const ARMCPRegInfo *ri,
bool isread)
{
int el = arm_current_el(env);
if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TDRA)
&& !arm_is_secure_below_el3(env)) {
return CP_ACCESS_TRAP_EL2;
}
if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TDA)) {
return CP_ACCESS_TRAP_EL3;
}
return CP_ACCESS_OK;
}
/* Check for traps to general debug registers, which are controlled
* by MDCR_EL2.TDA for EL2 and MDCR_EL3.TDA for EL3.
*/
static CPAccessResult access_tda(CPUARMState *env, const ARMCPRegInfo *ri,
bool isread)
{
int el = arm_current_el(env);
if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TDA)
&& !arm_is_secure_below_el3(env)) {
return CP_ACCESS_TRAP_EL2;
}
if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TDA)) {
return CP_ACCESS_TRAP_EL3;
}
return CP_ACCESS_OK;
}
/* Check for traps to performance monitor registers, which are controlled
* by MDCR_EL2.TPM for EL2 and MDCR_EL3.TPM for EL3.
*/
static CPAccessResult access_tpm(CPUARMState *env, const ARMCPRegInfo *ri,
bool isread)
{
int el = arm_current_el(env);
if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TPM)
&& !arm_is_secure_below_el3(env)) {
return CP_ACCESS_TRAP_EL2;
}
if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TPM)) {
return CP_ACCESS_TRAP_EL3;
}
return CP_ACCESS_OK;
}
static void dacr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
{
ARMCPU *cpu = arm_env_get_cpu(env);
raw_write(env, ri, value);
tlb_flush(CPU(cpu), 1); /* Flush TLB as domain not tracked in TLB */
}
static void fcse_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
{
ARMCPU *cpu = arm_env_get_cpu(env);
if (raw_read(env, ri) != value) {
/* Unlike real hardware the qemu TLB uses virtual addresses,
* not modified virtual addresses, so this causes a TLB flush.
*/
tlb_flush(CPU(cpu), 1);
raw_write(env, ri, value);
}
}
static void contextidr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
ARMCPU *cpu = arm_env_get_cpu(env);
if (raw_read(env, ri) != value && !arm_feature(env, ARM_FEATURE_MPU)
&& !extended_addresses_enabled(env)) {
/* For VMSA (when not using the LPAE long descriptor page table
* format) this register includes the ASID, so do a TLB flush.
* For PMSA it is purely a process ID and no action is needed.
*/
tlb_flush(CPU(cpu), 1);
}
raw_write(env, ri, value);
}
static void tlbiall_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
/* Invalidate all (TLBIALL) */
ARMCPU *cpu = arm_env_get_cpu(env);
tlb_flush(CPU(cpu), 1);
}
static void tlbimva_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
/* Invalidate single TLB entry by MVA and ASID (TLBIMVA) */
ARMCPU *cpu = arm_env_get_cpu(env);
tlb_flush_page(CPU(cpu), value & TARGET_PAGE_MASK);
}
static void tlbiasid_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
/* Invalidate by ASID (TLBIASID) */
ARMCPU *cpu = arm_env_get_cpu(env);
tlb_flush(CPU(cpu), value == 0);
}
static void tlbimvaa_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
/* Invalidate single entry by MVA, all ASIDs (TLBIMVAA) */
ARMCPU *cpu = arm_env_get_cpu(env);
tlb_flush_page(CPU(cpu), value & TARGET_PAGE_MASK);
}
/* IS variants of TLB operations must affect all cores */
static void tlbiall_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
CPUState *other_cs;
CPU_FOREACH(other_cs) {
tlb_flush(other_cs, 1);
}
}
static void tlbiasid_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
CPUState *other_cs;
CPU_FOREACH(other_cs) {
tlb_flush(other_cs, value == 0);
}
}
static void tlbimva_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
CPUState *other_cs;
CPU_FOREACH(other_cs) {
tlb_flush_page(other_cs, value & TARGET_PAGE_MASK);
}
}
static void tlbimvaa_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
CPUState *other_cs;
CPU_FOREACH(other_cs) {
tlb_flush_page(other_cs, value & TARGET_PAGE_MASK);
}
}
static void tlbiall_nsnh_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
CPUState *cs = ENV_GET_CPU(env);
tlb_flush_by_mmuidx(cs, ARMMMUIdx_S12NSE1, ARMMMUIdx_S12NSE0,
ARMMMUIdx_S2NS, -1);
}
static void tlbiall_nsnh_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
CPUState *other_cs;
CPU_FOREACH(other_cs) {
tlb_flush_by_mmuidx(other_cs, ARMMMUIdx_S12NSE1,
ARMMMUIdx_S12NSE0, ARMMMUIdx_S2NS, -1);
}
}
static void tlbiipas2_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
/* Invalidate by IPA. This has to invalidate any structures that
* contain only stage 2 translation information, but does not need
* to apply to structures that contain combined stage 1 and stage 2
* translation information.
* This must NOP if EL2 isn't implemented or SCR_EL3.NS is zero.
*/
CPUState *cs = ENV_GET_CPU(env);
uint64_t pageaddr;
if (!arm_feature(env, ARM_FEATURE_EL2) || !(env->cp15.scr_el3 & SCR_NS)) {
return;
}
pageaddr = sextract64(value << 12, 0, 40);
tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdx_S2NS, -1);
}
static void tlbiipas2_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
CPUState *other_cs;
uint64_t pageaddr;
if (!arm_feature(env, ARM_FEATURE_EL2) || !(env->cp15.scr_el3 & SCR_NS)) {
return;
}
pageaddr = sextract64(value << 12, 0, 40);
CPU_FOREACH(other_cs) {
tlb_flush_page_by_mmuidx(other_cs, pageaddr, ARMMMUIdx_S2NS, -1);
}
}
static void tlbiall_hyp_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
CPUState *cs = ENV_GET_CPU(env);
tlb_flush_by_mmuidx(cs, ARMMMUIdx_S1E2, -1);
}
static void tlbiall_hyp_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
CPUState *other_cs;
CPU_FOREACH(other_cs) {
tlb_flush_by_mmuidx(other_cs, ARMMMUIdx_S1E2, -1);
}
}
static void tlbimva_hyp_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
CPUState *cs = ENV_GET_CPU(env);
uint64_t pageaddr = value & ~MAKE_64BIT_MASK(0, 12);
tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdx_S1E2, -1);
}
static void tlbimva_hyp_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
CPUState *other_cs;
uint64_t pageaddr = value & ~MAKE_64BIT_MASK(0, 12);
CPU_FOREACH(other_cs) {
tlb_flush_page_by_mmuidx(other_cs, pageaddr, ARMMMUIdx_S1E2, -1);
}
}
static const ARMCPRegInfo cp_reginfo[] = {
/* Define the secure and non-secure FCSE identifier CP registers
* separately because there is no secure bank in V8 (no _EL3). This allows
* the secure register to be properly reset and migrated. There is also no
* v8 EL1 version of the register so the non-secure instance stands alone.
*/
{ .name = "FCSEIDR(NS)",
.cp = 15, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 0,
.access = PL1_RW, .secure = ARM_CP_SECSTATE_NS,
.fieldoffset = offsetof(CPUARMState, cp15.fcseidr_ns),
.resetvalue = 0, .writefn = fcse_write, .raw_writefn = raw_write, },
{ .name = "FCSEIDR(S)",
.cp = 15, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 0,
.access = PL1_RW, .secure = ARM_CP_SECSTATE_S,
.fieldoffset = offsetof(CPUARMState, cp15.fcseidr_s),
.resetvalue = 0, .writefn = fcse_write, .raw_writefn = raw_write, },
/* Define the secure and non-secure context identifier CP registers
* separately because there is no secure bank in V8 (no _EL3). This allows
* the secure register to be properly reset and migrated. In the
* non-secure case, the 32-bit register will have reset and migration
* disabled during registration as it is handled by the 64-bit instance.
*/
{ .name = "CONTEXTIDR_EL1", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 1,
.access = PL1_RW, .secure = ARM_CP_SECSTATE_NS,
.fieldoffset = offsetof(CPUARMState, cp15.contextidr_el[1]),
.resetvalue = 0, .writefn = contextidr_write, .raw_writefn = raw_write, },
{ .name = "CONTEXTIDR(S)", .state = ARM_CP_STATE_AA32,
.cp = 15, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 1,
.access = PL1_RW, .secure = ARM_CP_SECSTATE_S,
.fieldoffset = offsetof(CPUARMState, cp15.contextidr_s),
.resetvalue = 0, .writefn = contextidr_write, .raw_writefn = raw_write, },
REGINFO_SENTINEL
};
static const ARMCPRegInfo not_v8_cp_reginfo[] = {
/* NB: Some of these registers exist in v8 but with more precise
* definitions that don't use CP_ANY wildcards (mostly in v8_cp_reginfo[]).
*/
/* MMU Domain access control / MPU write buffer control */
{ .name = "DACR",
.cp = 15, .opc1 = CP_ANY, .crn = 3, .crm = CP_ANY, .opc2 = CP_ANY,
.access = PL1_RW, .resetvalue = 0,
.writefn = dacr_write, .raw_writefn = raw_write,
.bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.dacr_s),
offsetoflow32(CPUARMState, cp15.dacr_ns) } },
/* ARMv7 allocates a range of implementation defined TLB LOCKDOWN regs.
* For v6 and v5, these mappings are overly broad.
*/
{ .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 0,
.opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP },
{ .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 1,
.opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP },
{ .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 4,
.opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP },
{ .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 8,
.opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP },
/* Cache maintenance ops; some of this space may be overridden later. */
{ .name = "CACHEMAINT", .cp = 15, .crn = 7, .crm = CP_ANY,
.opc1 = 0, .opc2 = CP_ANY, .access = PL1_W,
.type = ARM_CP_NOP | ARM_CP_OVERRIDE },
REGINFO_SENTINEL
};
static const ARMCPRegInfo not_v6_cp_reginfo[] = {
/* Not all pre-v6 cores implemented this WFI, so this is slightly
* over-broad.
*/
{ .name = "WFI_v5", .cp = 15, .crn = 7, .crm = 8, .opc1 = 0, .opc2 = 2,
.access = PL1_W, .type = ARM_CP_WFI },
REGINFO_SENTINEL
};
static const ARMCPRegInfo not_v7_cp_reginfo[] = {
/* Standard v6 WFI (also used in some pre-v6 cores); not in v7 (which
* is UNPREDICTABLE; we choose to NOP as most implementations do).
*/
{ .name = "WFI_v6", .cp = 15, .crn = 7, .crm = 0, .opc1 = 0, .opc2 = 4,
.access = PL1_W, .type = ARM_CP_WFI },
/* L1 cache lockdown. Not architectural in v6 and earlier but in practice
* implemented in 926, 946, 1026, 1136, 1176 and 11MPCore. StrongARM and
* OMAPCP will override this space.
*/
{ .name = "DLOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_data),
.resetvalue = 0 },
{ .name = "ILOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 0, .opc2 = 1,
.access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_insn),
.resetvalue = 0 },
/* v6 doesn't have the cache ID registers but Linux reads them anyway */
{ .name = "DUMMY", .cp = 15, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = CP_ANY,
.access = PL1_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW,
.resetvalue = 0 },
/* We don't implement pre-v7 debug but most CPUs had at least a DBGDIDR;
* implementing it as RAZ means the "debug architecture version" bits
* will read as a reserved value, which should cause Linux to not try
* to use the debug hardware.
*/
{ .name = "DBGDIDR", .cp = 14, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 0,
.access = PL0_R, .type = ARM_CP_CONST, .resetvalue = 0 },
/* MMU TLB control. Note that the wildcarding means we cover not just
* the unified TLB ops but also the dside/iside/inner-shareable variants.
*/
{ .name = "TLBIALL", .cp = 15, .crn = 8, .crm = CP_ANY,
.opc1 = CP_ANY, .opc2 = 0, .access = PL1_W, .writefn = tlbiall_write,
.type = ARM_CP_NO_RAW },
{ .name = "TLBIMVA", .cp = 15, .crn = 8, .crm = CP_ANY,
.opc1 = CP_ANY, .opc2 = 1, .access = PL1_W, .writefn = tlbimva_write,
.type = ARM_CP_NO_RAW },
{ .name = "TLBIASID", .cp = 15, .crn = 8, .crm = CP_ANY,
.opc1 = CP_ANY, .opc2 = 2, .access = PL1_W, .writefn = tlbiasid_write,
.type = ARM_CP_NO_RAW },
{ .name = "TLBIMVAA", .cp = 15, .crn = 8, .crm = CP_ANY,
.opc1 = CP_ANY, .opc2 = 3, .access = PL1_W, .writefn = tlbimvaa_write,
.type = ARM_CP_NO_RAW },
{ .name = "PRRR", .cp = 15, .crn = 10, .crm = 2,
.opc1 = 0, .opc2 = 0, .access = PL1_RW, .type = ARM_CP_NOP },
{ .name = "NMRR", .cp = 15, .crn = 10, .crm = 2,
.opc1 = 0, .opc2 = 1, .access = PL1_RW, .type = ARM_CP_NOP },
REGINFO_SENTINEL
};
static void cpacr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
uint32_t mask = 0;
/* In ARMv8 most bits of CPACR_EL1 are RES0. */
if (!arm_feature(env, ARM_FEATURE_V8)) {
/* ARMv7 defines bits for unimplemented coprocessors as RAZ/WI.
* ASEDIS [31] and D32DIS [30] are both UNK/SBZP without VFP.
* TRCDIS [28] is RAZ/WI since we do not implement a trace macrocell.
*/
if (arm_feature(env, ARM_FEATURE_VFP)) {
/* VFP coprocessor: cp10 & cp11 [23:20] */
mask |= (1 << 31) | (1 << 30) | (0xf << 20);
if (!arm_feature(env, ARM_FEATURE_NEON)) {
/* ASEDIS [31] bit is RAO/WI */
value |= (1 << 31);
}
/* VFPv3 and upwards with NEON implement 32 double precision
* registers (D0-D31).
*/
if (!arm_feature(env, ARM_FEATURE_NEON) ||
!arm_feature(env, ARM_FEATURE_VFP3)) {
/* D32DIS [30] is RAO/WI if D16-31 are not implemented. */
value |= (1 << 30);
}
}
value &= mask;
}
env->cp15.cpacr_el1 = value;
}
static CPAccessResult cpacr_access(CPUARMState *env, const ARMCPRegInfo *ri,
bool isread)
{
if (arm_feature(env, ARM_FEATURE_V8)) {
/* Check if CPACR accesses are to be trapped to EL2 */
if (arm_current_el(env) == 1 &&
(env->cp15.cptr_el[2] & CPTR_TCPAC) && !arm_is_secure(env)) {
return CP_ACCESS_TRAP_EL2;
/* Check if CPACR accesses are to be trapped to EL3 */
} else if (arm_current_el(env) < 3 &&
(env->cp15.cptr_el[3] & CPTR_TCPAC)) {
return CP_ACCESS_TRAP_EL3;
}
}
return CP_ACCESS_OK;
}
static CPAccessResult cptr_access(CPUARMState *env, const ARMCPRegInfo *ri,
bool isread)
{
/* Check if CPTR accesses are set to trap to EL3 */
if (arm_current_el(env) == 2 && (env->cp15.cptr_el[3] & CPTR_TCPAC)) {
return CP_ACCESS_TRAP_EL3;
}
return CP_ACCESS_OK;
}
static const ARMCPRegInfo v6_cp_reginfo[] = {
/* prefetch by MVA in v6, NOP in v7 */
{ .name = "MVA_prefetch",
.cp = 15, .crn = 7, .crm = 13, .opc1 = 0, .opc2 = 1,
.access = PL1_W, .type = ARM_CP_NOP },
/* We need to break the TB after ISB to execute self-modifying code
* correctly and also to take any pending interrupts immediately.
* So use arm_cp_write_ignore() function instead of ARM_CP_NOP flag.
*/
{ .name = "ISB", .cp = 15, .crn = 7, .crm = 5, .opc1 = 0, .opc2 = 4,
.access = PL0_W, .type = ARM_CP_NO_RAW, .writefn = arm_cp_write_ignore },
{ .name = "DSB", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 4,
.access = PL0_W, .type = ARM_CP_NOP },
{ .name = "DMB", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 5,
.access = PL0_W, .type = ARM_CP_NOP },
{ .name = "IFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 2,
.access = PL1_RW,
.bank_fieldoffsets = { offsetof(CPUARMState, cp15.ifar_s),
offsetof(CPUARMState, cp15.ifar_ns) },
.resetvalue = 0, },
/* Watchpoint Fault Address Register : should actually only be present
* for 1136, 1176, 11MPCore.
*/
{ .name = "WFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 1,
.access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0, },
{ .name = "CPACR", .state = ARM_CP_STATE_BOTH, .opc0 = 3,
.crn = 1, .crm = 0, .opc1 = 0, .opc2 = 2, .accessfn = cpacr_access,
.access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.cpacr_el1),
.resetvalue = 0, .writefn = cpacr_write },
REGINFO_SENTINEL
};
static CPAccessResult pmreg_access(CPUARMState *env, const ARMCPRegInfo *ri,
bool isread)
{
/* Performance monitor registers user accessibility is controlled
* by PMUSERENR. MDCR_EL2.TPM and MDCR_EL3.TPM allow configurable
* trapping to EL2 or EL3 for other accesses.
*/
int el = arm_current_el(env);
if (el == 0 && !env->cp15.c9_pmuserenr) {
return CP_ACCESS_TRAP;
}
if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TPM)
&& !arm_is_secure_below_el3(env)) {
return CP_ACCESS_TRAP_EL2;
}
if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TPM)) {
return CP_ACCESS_TRAP_EL3;
}
return CP_ACCESS_OK;
}
#ifndef CONFIG_USER_ONLY
static inline bool arm_ccnt_enabled(CPUARMState *env)
{
/* This does not support checking PMCCFILTR_EL0 register */
if (!(env->cp15.c9_pmcr & PMCRE)) {
return false;
}
return true;
}
void pmccntr_sync(CPUARMState *env)
{
uint64_t temp_ticks;
temp_ticks = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
ARM_CPU_FREQ, NANOSECONDS_PER_SECOND);
if (env->cp15.c9_pmcr & PMCRD) {
/* Increment once every 64 processor clock cycles */
temp_ticks /= 64;
}
if (arm_ccnt_enabled(env)) {
env->cp15.c15_ccnt = temp_ticks - env->cp15.c15_ccnt;
}
}
static void pmcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
pmccntr_sync(env);
if (value & PMCRC) {
/* The counter has been reset */
env->cp15.c15_ccnt = 0;
}
/* only the DP, X, D and E bits are writable */
env->cp15.c9_pmcr &= ~0x39;
env->cp15.c9_pmcr |= (value & 0x39);
pmccntr_sync(env);
}
static uint64_t pmccntr_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
uint64_t total_ticks;
if (!arm_ccnt_enabled(env)) {
/* Counter is disabled, do not change value */
return env->cp15.c15_ccnt;
}
total_ticks = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
ARM_CPU_FREQ, NANOSECONDS_PER_SECOND);
if (env->cp15.c9_pmcr & PMCRD) {
/* Increment once every 64 processor clock cycles */
total_ticks /= 64;
}
return total_ticks - env->cp15.c15_ccnt;
}
static void pmccntr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
uint64_t total_ticks;
if (!arm_ccnt_enabled(env)) {
/* Counter is disabled, set the absolute value */
env->cp15.c15_ccnt = value;
return;
}
total_ticks = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
ARM_CPU_FREQ, NANOSECONDS_PER_SECOND);
if (env->cp15.c9_pmcr & PMCRD) {
/* Increment once every 64 processor clock cycles */
total_ticks /= 64;
}
env->cp15.c15_ccnt = total_ticks - value;
}
static void pmccntr_write32(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
uint64_t cur_val = pmccntr_read(env, NULL);
pmccntr_write(env, ri, deposit64(cur_val, 0, 32, value));
}
#else /* CONFIG_USER_ONLY */
void pmccntr_sync(CPUARMState *env)
{
}
#endif
static void pmccfiltr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
pmccntr_sync(env);
env->cp15.pmccfiltr_el0 = value & 0x7E000000;
pmccntr_sync(env);
}
static void pmcntenset_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
value &= (1 << 31);
env->cp15.c9_pmcnten |= value;
}
static void pmcntenclr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
value &= (1 << 31);
env->cp15.c9_pmcnten &= ~value;
}
static void pmovsr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
env->cp15.c9_pmovsr &= ~value;
}
static void pmxevtyper_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
env->cp15.c9_pmxevtyper = value & 0xff;
}
static void pmuserenr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
env->cp15.c9_pmuserenr = value & 1;
}
static void pmintenset_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
/* We have no event counters so only the C bit can be changed */
value &= (1 << 31);
env->cp15.c9_pminten |= value;
}
static void pmintenclr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
value &= (1 << 31);
env->cp15.c9_pminten &= ~value;
}
static void vbar_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
/* Note that even though the AArch64 view of this register has bits
* [10:0] all RES0 we can only mask the bottom 5, to comply with the
* architectural requirements for bits which are RES0 only in some
* contexts. (ARMv8 would permit us to do no masking at all, but ARMv7
* requires the bottom five bits to be RAZ/WI because they're UNK/SBZP.)
*/
raw_write(env, ri, value & ~0x1FULL);
}
static void scr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
{
/* We only mask off bits that are RES0 both for AArch64 and AArch32.
* For bits that vary between AArch32/64, code needs to check the
* current execution mode before directly using the feature bit.
*/
uint32_t valid_mask = SCR_AARCH64_MASK | SCR_AARCH32_MASK;
if (!arm_feature(env, ARM_FEATURE_EL2)) {
valid_mask &= ~SCR_HCE;
/* On ARMv7, SMD (or SCD as it is called in v7) is only
* supported if EL2 exists. The bit is UNK/SBZP when
* EL2 is unavailable. In QEMU ARMv7, we force it to always zero
* when EL2 is unavailable.
* On ARMv8, this bit is always available.
*/
if (arm_feature(env, ARM_FEATURE_V7) &&
!arm_feature(env, ARM_FEATURE_V8)) {
valid_mask &= ~SCR_SMD;
}
}
/* Clear all-context RES0 bits. */
value &= valid_mask;
raw_write(env, ri, value);
}
static uint64_t ccsidr_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
ARMCPU *cpu = arm_env_get_cpu(env);
/* Acquire the CSSELR index from the bank corresponding to the CCSIDR
* bank
*/
uint32_t index = A32_BANKED_REG_GET(env, csselr,
ri->secure & ARM_CP_SECSTATE_S);
return cpu->ccsidr[index];
}
static void csselr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
raw_write(env, ri, value & 0xf);
}
static uint64_t isr_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
CPUState *cs = ENV_GET_CPU(env);
uint64_t ret = 0;
if (cs->interrupt_request & CPU_INTERRUPT_HARD) {
ret |= CPSR_I;
}
if (cs->interrupt_request & CPU_INTERRUPT_FIQ) {
ret |= CPSR_F;
}
/* External aborts are not possible in QEMU so A bit is always clear */
return ret;
}
static const ARMCPRegInfo v7_cp_reginfo[] = {
/* the old v6 WFI, UNPREDICTABLE in v7 but we choose to NOP */
{ .name = "NOP", .cp = 15, .crn = 7, .crm = 0, .opc1 = 0, .opc2 = 4,
.access = PL1_W, .type = ARM_CP_NOP },
/* Performance monitors are implementation defined in v7,
* but with an ARM recommended set of registers, which we
* follow (although we don't actually implement any counters)
*
* Performance registers fall into three categories:
* (a) always UNDEF in PL0, RW in PL1 (PMINTENSET, PMINTENCLR)
* (b) RO in PL0 (ie UNDEF on write), RW in PL1 (PMUSERENR)
* (c) UNDEF in PL0 if PMUSERENR.EN==0, otherwise accessible (all others)
* For the cases controlled by PMUSERENR we must set .access to PL0_RW
* or PL0_RO as appropriate and then check PMUSERENR in the helper fn.
*/
{ .name = "PMCNTENSET", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 1,
.access = PL0_RW, .type = ARM_CP_ALIAS,
.fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmcnten),
.writefn = pmcntenset_write,
.accessfn = pmreg_access,
.raw_writefn = raw_write },
{ .name = "PMCNTENSET_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 1,
.access = PL0_RW, .accessfn = pmreg_access,
.fieldoffset = offsetof(CPUARMState, cp15.c9_pmcnten), .resetvalue = 0,
.writefn = pmcntenset_write, .raw_writefn = raw_write },
{ .name = "PMCNTENCLR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 2,
.access = PL0_RW,
.fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmcnten),
.accessfn = pmreg_access,
.writefn = pmcntenclr_write,
.type = ARM_CP_ALIAS },
{ .name = "PMCNTENCLR_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 2,
.access = PL0_RW, .accessfn = pmreg_access,
.type = ARM_CP_ALIAS,
.fieldoffset = offsetof(CPUARMState, cp15.c9_pmcnten),
.writefn = pmcntenclr_write },
{ .name = "PMOVSR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 3,
.access = PL0_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_pmovsr),
.accessfn = pmreg_access,
.writefn = pmovsr_write,
.raw_writefn = raw_write },
{ .name = "PMOVSCLR_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 3,
.access = PL0_RW, .accessfn = pmreg_access,
.type = ARM_CP_ALIAS,
.fieldoffset = offsetof(CPUARMState, cp15.c9_pmovsr),
.writefn = pmovsr_write,
.raw_writefn = raw_write },
/* Unimplemented so WI. */
{ .name = "PMSWINC", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 4,
.access = PL0_W, .accessfn = pmreg_access, .type = ARM_CP_NOP },
/* Since we don't implement any events, writing to PMSELR is UNPREDICTABLE.
* We choose to RAZ/WI.
*/
{ .name = "PMSELR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 5,
.access = PL0_RW, .type = ARM_CP_CONST, .resetvalue = 0,
.accessfn = pmreg_access },
#ifndef CONFIG_USER_ONLY
{ .name = "PMCCNTR", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 0,
.access = PL0_RW, .resetvalue = 0, .type = ARM_CP_IO,
.readfn = pmccntr_read, .writefn = pmccntr_write32,
.accessfn = pmreg_access },
{ .name = "PMCCNTR_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .crn = 9, .crm = 13, .opc2 = 0,
.access = PL0_RW, .accessfn = pmreg_access,
.type = ARM_CP_IO,
.readfn = pmccntr_read, .writefn = pmccntr_write, },
#endif
{ .name = "PMCCFILTR_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .crn = 14, .crm = 15, .opc2 = 7,
.writefn = pmccfiltr_write,
.access = PL0_RW, .accessfn = pmreg_access,
.type = ARM_CP_IO,
.fieldoffset = offsetof(CPUARMState, cp15.pmccfiltr_el0),
.resetvalue = 0, },
{ .name = "PMXEVTYPER", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 1,
.access = PL0_RW,
.fieldoffset = offsetof(CPUARMState, cp15.c9_pmxevtyper),
.accessfn = pmreg_access, .writefn = pmxevtyper_write,
.raw_writefn = raw_write },
/* Unimplemented, RAZ/WI. */
{ .name = "PMXEVCNTR", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 2,
.access = PL0_RW, .type = ARM_CP_CONST, .resetvalue = 0,
.accessfn = pmreg_access },
{ .name = "PMUSERENR", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 0,
.access = PL0_R | PL1_RW, .accessfn = access_tpm,
.fieldoffset = offsetof(CPUARMState, cp15.c9_pmuserenr),
.resetvalue = 0,
.writefn = pmuserenr_write, .raw_writefn = raw_write },
{ .name = "PMUSERENR_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .crn = 9, .crm = 14, .opc2 = 0,
.access = PL0_R | PL1_RW, .accessfn = access_tpm, .type = ARM_CP_ALIAS,
.fieldoffset = offsetof(CPUARMState, cp15.c9_pmuserenr),
.resetvalue = 0,
.writefn = pmuserenr_write, .raw_writefn = raw_write },
{ .name = "PMINTENSET", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 1,
.access = PL1_RW, .accessfn = access_tpm,
.fieldoffset = offsetof(CPUARMState, cp15.c9_pminten),
.resetvalue = 0,
.writefn = pmintenset_write, .raw_writefn = raw_write },
{ .name = "PMINTENCLR", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 2,
.access = PL1_RW, .accessfn = access_tpm, .type = ARM_CP_ALIAS,
.fieldoffset = offsetof(CPUARMState, cp15.c9_pminten),
.writefn = pmintenclr_write, },
{ .name = "PMINTENCLR_EL1", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 0, .crn = 9, .crm = 14, .opc2 = 2,
.access = PL1_RW, .accessfn = access_tpm, .type = ARM_CP_ALIAS,
.fieldoffset = offsetof(CPUARMState, cp15.c9_pminten),
.writefn = pmintenclr_write },
{ .name = "VBAR", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .crn = 12, .crm = 0, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .writefn = vbar_write,
.bank_fieldoffsets = { offsetof(CPUARMState, cp15.vbar_s),
offsetof(CPUARMState, cp15.vbar_ns) },
.resetvalue = 0 },
{ .name = "CCSIDR", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = 0,
.access = PL1_R, .readfn = ccsidr_read, .type = ARM_CP_NO_RAW },
{ .name = "CSSELR", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .crn = 0, .crm = 0, .opc1 = 2, .opc2 = 0,
.access = PL1_RW, .writefn = csselr_write, .resetvalue = 0,
.bank_fieldoffsets = { offsetof(CPUARMState, cp15.csselr_s),
offsetof(CPUARMState, cp15.csselr_ns) } },
/* Auxiliary ID register: this actually has an IMPDEF value but for now
* just RAZ for all cores:
*/
{ .name = "AIDR", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .opc1 = 1, .crn = 0, .crm = 0, .opc2 = 7,
.access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
/* Auxiliary fault status registers: these also are IMPDEF, and we
* choose to RAZ/WI for all cores.
*/
{ .name = "AFSR0_EL1", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .opc1 = 0, .crn = 5, .crm = 1, .opc2 = 0,
.access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
{ .name = "AFSR1_EL1", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .opc1 = 0, .crn = 5, .crm = 1, .opc2 = 1,
.access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
/* MAIR can just read-as-written because we don't implement caches
* and so don't need to care about memory attributes.
*/
{ .name = "MAIR_EL1", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 0,
.access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[1]),
.resetvalue = 0 },
{ .name = "MAIR_EL3", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 6, .crn = 10, .crm = 2, .opc2 = 0,
.access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[3]),
.resetvalue = 0 },
/* For non-long-descriptor page tables these are PRRR and NMRR;
* regardless they still act as reads-as-written for QEMU.
*/
/* MAIR0/1 are defined separately from their 64-bit counterpart which
* allows them to assign the correct fieldoffset based on the endianness
* handled in the field definitions.
*/
{ .name = "MAIR0", .state = ARM_CP_STATE_AA32,
.cp = 15, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 0, .access = PL1_RW,
.bank_fieldoffsets = { offsetof(CPUARMState, cp15.mair0_s),
offsetof(CPUARMState, cp15.mair0_ns) },
.resetfn = arm_cp_reset_ignore },
{ .name = "MAIR1", .state = ARM_CP_STATE_AA32,
.cp = 15, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 1, .access = PL1_RW,
.bank_fieldoffsets = { offsetof(CPUARMState, cp15.mair1_s),
offsetof(CPUARMState, cp15.mair1_ns) },
.resetfn = arm_cp_reset_ignore },
{ .name = "ISR_EL1", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .opc1 = 0, .crn = 12, .crm = 1, .opc2 = 0,
.type = ARM_CP_NO_RAW, .access = PL1_R, .readfn = isr_read },
/* 32 bit ITLB invalidates */
{ .name = "ITLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 0,
.type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write },
{ .name = "ITLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 1,
.type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write },
{ .name = "ITLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 2,
.type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write },
/* 32 bit DTLB invalidates */
{ .name = "DTLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 0,
.type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write },
{ .name = "DTLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 1,
.type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write },
{ .name = "DTLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 2,
.type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write },
/* 32 bit TLB invalidates */
{ .name = "TLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 0,
.type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write },
{ .name = "TLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 1,
.type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write },
{ .name = "TLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 2,
.type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write },
{ .name = "TLBIMVAA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 3,
.type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimvaa_write },
REGINFO_SENTINEL
};
static const ARMCPRegInfo v7mp_cp_reginfo[] = {
/* 32 bit TLB invalidates, Inner Shareable */
{ .name = "TLBIALLIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 0,
.type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_is_write },
{ .name = "TLBIMVAIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 1,
.type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_is_write },
{ .name = "TLBIASIDIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 2,
.type = ARM_CP_NO_RAW, .access = PL1_W,
.writefn = tlbiasid_is_write },
{ .name = "TLBIMVAAIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 3,
.type = ARM_CP_NO_RAW, .access = PL1_W,
.writefn = tlbimvaa_is_write },
REGINFO_SENTINEL
};
static void teecr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
value &= 1;
env->teecr = value;
}
static CPAccessResult teehbr_access(CPUARMState *env, const ARMCPRegInfo *ri,
bool isread)
{
if (arm_current_el(env) == 0 && (env->teecr & 1)) {
return CP_ACCESS_TRAP;
}
return CP_ACCESS_OK;
}
static const ARMCPRegInfo t2ee_cp_reginfo[] = {
{ .name = "TEECR", .cp = 14, .crn = 0, .crm = 0, .opc1 = 6, .opc2 = 0,
.access = PL1_RW, .fieldoffset = offsetof(CPUARMState, teecr),
.resetvalue = 0,
.writefn = teecr_write },
{ .name = "TEEHBR", .cp = 14, .crn = 1, .crm = 0, .opc1 = 6, .opc2 = 0,
.access = PL0_RW, .fieldoffset = offsetof(CPUARMState, teehbr),
.accessfn = teehbr_access, .resetvalue = 0 },
REGINFO_SENTINEL
};
static const ARMCPRegInfo v6k_cp_reginfo[] = {
{ .name = "TPIDR_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .opc2 = 2, .crn = 13, .crm = 0,
.access = PL0_RW,
.fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[0]), .resetvalue = 0 },
{ .name = "TPIDRURW", .cp = 15, .crn = 13, .crm = 0, .opc1 = 0, .opc2 = 2,
.access = PL0_RW,
.bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tpidrurw_s),
offsetoflow32(CPUARMState, cp15.tpidrurw_ns) },
.resetfn = arm_cp_reset_ignore },
{ .name = "TPIDRRO_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .opc2 = 3, .crn = 13, .crm = 0,
.access = PL0_R|PL1_W,
.fieldoffset = offsetof(CPUARMState, cp15.tpidrro_el[0]),
.resetvalue = 0},
{ .name = "TPIDRURO", .cp = 15, .crn = 13, .crm = 0, .opc1 = 0, .opc2 = 3,
.access = PL0_R|PL1_W,
.bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tpidruro_s),
offsetoflow32(CPUARMState, cp15.tpidruro_ns) },
.resetfn = arm_cp_reset_ignore },
{ .name = "TPIDR_EL1", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 0, .opc2 = 4, .crn = 13, .crm = 0,
.access = PL1_RW,
.fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[1]), .resetvalue = 0 },
{ .name = "TPIDRPRW", .opc1 = 0, .cp = 15, .crn = 13, .crm = 0, .opc2 = 4,
.access = PL1_RW,
.bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tpidrprw_s),
offsetoflow32(CPUARMState, cp15.tpidrprw_ns) },
.resetvalue = 0 },
REGINFO_SENTINEL
};
#ifndef CONFIG_USER_ONLY
static CPAccessResult gt_cntfrq_access(CPUARMState *env, const ARMCPRegInfo *ri,
bool isread)
{
/* CNTFRQ: not visible from PL0 if both PL0PCTEN and PL0VCTEN are zero.
* Writable only at the highest implemented exception level.
*/
int el = arm_current_el(env);
switch (el) {
case 0:
if (!extract32(env->cp15.c14_cntkctl, 0, 2)) {
return CP_ACCESS_TRAP;
}
break;
case 1:
if (!isread && ri->state == ARM_CP_STATE_AA32 &&
arm_is_secure_below_el3(env)) {
/* Accesses from 32-bit Secure EL1 UNDEF (*not* trap to EL3!) */
return CP_ACCESS_TRAP_UNCATEGORIZED;
}
break;
case 2:
case 3:
break;
}
if (!isread && el < arm_highest_el(env)) {
return CP_ACCESS_TRAP_UNCATEGORIZED;
}
return CP_ACCESS_OK;
}
static CPAccessResult gt_counter_access(CPUARMState *env, int timeridx,
bool isread)
{
unsigned int cur_el = arm_current_el(env);
bool secure = arm_is_secure(env);
/* CNT[PV]CT: not visible from PL0 if ELO[PV]CTEN is zero */
if (cur_el == 0 &&
!extract32(env->cp15.c14_cntkctl, timeridx, 1)) {
return CP_ACCESS_TRAP;
}
if (arm_feature(env, ARM_FEATURE_EL2) &&
timeridx == GTIMER_PHYS && !secure && cur_el < 2 &&
!extract32(env->cp15.cnthctl_el2, 0, 1)) {
return CP_ACCESS_TRAP_EL2;
}
return CP_ACCESS_OK;
}
static CPAccessResult gt_timer_access(CPUARMState *env, int timeridx,
bool isread)
{
unsigned int cur_el = arm_current_el(env);
bool secure = arm_is_secure(env);
/* CNT[PV]_CVAL, CNT[PV]_CTL, CNT[PV]_TVAL: not visible from PL0 if
* EL0[PV]TEN is zero.
*/
if (cur_el == 0 &&
!extract32(env->cp15.c14_cntkctl, 9 - timeridx, 1)) {
return CP_ACCESS_TRAP;
}
if (arm_feature(env, ARM_FEATURE_EL2) &&
timeridx == GTIMER_PHYS && !secure && cur_el < 2 &&
!extract32(env->cp15.cnthctl_el2, 1, 1)) {
return CP_ACCESS_TRAP_EL2;
}
return CP_ACCESS_OK;
}
static CPAccessResult gt_pct_access(CPUARMState *env,
const ARMCPRegInfo *ri,
bool isread)
{
return gt_counter_access(env, GTIMER_PHYS, isread);
}
static CPAccessResult gt_vct_access(CPUARMState *env,
const ARMCPRegInfo *ri,
bool isread)
{
return gt_counter_access(env, GTIMER_VIRT, isread);
}
static CPAccessResult gt_ptimer_access(CPUARMState *env, const ARMCPRegInfo *ri,
bool isread)
{
return gt_timer_access(env, GTIMER_PHYS, isread);
}
static CPAccessResult gt_vtimer_access(CPUARMState *env, const ARMCPRegInfo *ri,
bool isread)
{
return gt_timer_access(env, GTIMER_VIRT, isread);
}
static CPAccessResult gt_stimer_access(CPUARMState *env,
const ARMCPRegInfo *ri,
bool isread)
{
/* The AArch64 register view of the secure physical timer is
* always accessible from EL3, and configurably accessible from
* Secure EL1.
*/
switch (arm_current_el(env)) {
case 1:
if (!arm_is_secure(env)) {
return CP_ACCESS_TRAP;
}
if (!(env->cp15.scr_el3 & SCR_ST)) {
return CP_ACCESS_TRAP_EL3;
}
return CP_ACCESS_OK;
case 0:
case 2:
return CP_ACCESS_TRAP;
case 3:
return CP_ACCESS_OK;
default:
g_assert_not_reached();
}
}
static uint64_t gt_get_countervalue(CPUARMState *env)
{
return qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / GTIMER_SCALE;
}
static void gt_recalc_timer(ARMCPU *cpu, int timeridx)
{
ARMGenericTimer *gt = &cpu->env.cp15.c14_timer[timeridx];
if (gt->ctl & 1) {
/* Timer enabled: calculate and set current ISTATUS, irq, and
* reset timer to when ISTATUS next has to change
*/
uint64_t offset = timeridx == GTIMER_VIRT ?
cpu->env.cp15.cntvoff_el2 : 0;
uint64_t count = gt_get_countervalue(&cpu->env);
/* Note that this must be unsigned 64 bit arithmetic: */
int istatus = count - offset >= gt->cval;
uint64_t nexttick;
gt->ctl = deposit32(gt->ctl, 2, 1, istatus);
qemu_set_irq(cpu->gt_timer_outputs[timeridx],
(istatus && !(gt->ctl & 2)));
if (istatus) {
/* Next transition is when count rolls back over to zero */
nexttick = UINT64_MAX;
} else {
/* Next transition is when we hit cval */
nexttick = gt->cval + offset;
}
/* Note that the desired next expiry time might be beyond the
* signed-64-bit range of a QEMUTimer -- in this case we just
* set the timer for as far in the future as possible. When the
* timer expires we will reset the timer for any remaining period.
*/
if (nexttick > INT64_MAX / GTIMER_SCALE) {
nexttick = INT64_MAX / GTIMER_SCALE;
}
timer_mod(cpu->gt_timer[timeridx], nexttick);
} else {
/* Timer disabled: ISTATUS and timer output always clear */
gt->ctl &= ~4;
qemu_set_irq(cpu->gt_timer_outputs[timeridx], 0);
timer_del(cpu->gt_timer[timeridx]);
}
}
static void gt_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri,
int timeridx)
{
ARMCPU *cpu = arm_env_get_cpu(env);
timer_del(cpu->gt_timer[timeridx]);
}
static uint64_t gt_cnt_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
return gt_get_countervalue(env);
}
static uint64_t gt_virt_cnt_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
return gt_get_countervalue(env) - env->cp15.cntvoff_el2;
}
static void gt_cval_write(CPUARMState *env, const ARMCPRegInfo *ri,
int timeridx,
uint64_t value)
{
env->cp15.c14_timer[timeridx].cval = value;
gt_recalc_timer(arm_env_get_cpu(env), timeridx);
}
static uint64_t gt_tval_read(CPUARMState *env, const ARMCPRegInfo *ri,
int timeridx)
{
uint64_t offset = timeridx == GTIMER_VIRT ? env->cp15.cntvoff_el2 : 0;
return (uint32_t)(env->cp15.c14_timer[timeridx].cval -
(gt_get_countervalue(env) - offset));
}
static void gt_tval_write(CPUARMState *env, const ARMCPRegInfo *ri,
int timeridx,
uint64_t value)
{
uint64_t offset = timeridx == GTIMER_VIRT ? env->cp15.cntvoff_el2 : 0;
env->cp15.c14_timer[timeridx].cval = gt_get_countervalue(env) - offset +
sextract64(value, 0, 32);
gt_recalc_timer(arm_env_get_cpu(env), timeridx);
}
static void gt_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri,
int timeridx,
uint64_t value)
{
ARMCPU *cpu = arm_env_get_cpu(env);
uint32_t oldval = env->cp15.c14_timer[timeridx].ctl;
env->cp15.c14_timer[timeridx].ctl = deposit64(oldval, 0, 2, value);
if ((oldval ^ value) & 1) {
/* Enable toggled */
gt_recalc_timer(cpu, timeridx);
} else if ((oldval ^ value) & 2) {
/* IMASK toggled: don't need to recalculate,
* just set the interrupt line based on ISTATUS
*/
qemu_set_irq(cpu->gt_timer_outputs[timeridx],
(oldval & 4) && !(value & 2));
}
}
static void gt_phys_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri)
{
gt_timer_reset(env, ri, GTIMER_PHYS);
}
static void gt_phys_cval_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
gt_cval_write(env, ri, GTIMER_PHYS, value);
}
static uint64_t gt_phys_tval_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
return gt_tval_read(env, ri, GTIMER_PHYS);
}
static void gt_phys_tval_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
gt_tval_write(env, ri, GTIMER_PHYS, value);
}
static void gt_phys_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
gt_ctl_write(env, ri, GTIMER_PHYS, value);
}
static void gt_virt_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri)
{
gt_timer_reset(env, ri, GTIMER_VIRT);
}
static void gt_virt_cval_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
gt_cval_write(env, ri, GTIMER_VIRT, value);
}
static uint64_t gt_virt_tval_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
return gt_tval_read(env, ri, GTIMER_VIRT);
}
static void gt_virt_tval_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
gt_tval_write(env, ri, GTIMER_VIRT, value);
}
static void gt_virt_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
gt_ctl_write(env, ri, GTIMER_VIRT, value);
}
static void gt_cntvoff_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
ARMCPU *cpu = arm_env_get_cpu(env);
raw_write(env, ri, value);
gt_recalc_timer(cpu, GTIMER_VIRT);
}
static void gt_hyp_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri)
{
gt_timer_reset(env, ri, GTIMER_HYP);
}
static void gt_hyp_cval_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
gt_cval_write(env, ri, GTIMER_HYP, value);
}
static uint64_t gt_hyp_tval_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
return gt_tval_read(env, ri, GTIMER_HYP);
}
static void gt_hyp_tval_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
gt_tval_write(env, ri, GTIMER_HYP, value);
}
static void gt_hyp_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
gt_ctl_write(env, ri, GTIMER_HYP, value);
}
static void gt_sec_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri)
{
gt_timer_reset(env, ri, GTIMER_SEC);
}
static void gt_sec_cval_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
gt_cval_write(env, ri, GTIMER_SEC, value);
}
static uint64_t gt_sec_tval_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
return gt_tval_read(env, ri, GTIMER_SEC);
}
static void gt_sec_tval_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
gt_tval_write(env, ri, GTIMER_SEC, value);
}
static void gt_sec_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
gt_ctl_write(env, ri, GTIMER_SEC, value);
}
void arm_gt_ptimer_cb(void *opaque)
{
ARMCPU *cpu = opaque;
gt_recalc_timer(cpu, GTIMER_PHYS);
}
void arm_gt_vtimer_cb(void *opaque)
{
ARMCPU *cpu = opaque;
gt_recalc_timer(cpu, GTIMER_VIRT);
}
void arm_gt_htimer_cb(void *opaque)
{
ARMCPU *cpu = opaque;
gt_recalc_timer(cpu, GTIMER_HYP);
}
void arm_gt_stimer_cb(void *opaque)
{
ARMCPU *cpu = opaque;
gt_recalc_timer(cpu, GTIMER_SEC);
}
static const ARMCPRegInfo generic_timer_cp_reginfo[] = {
/* Note that CNTFRQ is purely reads-as-written for the benefit
* of software; writing it doesn't actually change the timer frequency.
* Our reset value matches the fixed frequency we implement the timer at.
*/
{ .name = "CNTFRQ", .cp = 15, .crn = 14, .crm = 0, .opc1 = 0, .opc2 = 0,
.type = ARM_CP_ALIAS,
.access = PL1_RW | PL0_R, .accessfn = gt_cntfrq_access,
.fieldoffset = offsetoflow32(CPUARMState, cp15.c14_cntfrq),
},
{ .name = "CNTFRQ_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 0,
.access = PL1_RW | PL0_R, .accessfn = gt_cntfrq_access,
.fieldoffset = offsetof(CPUARMState, cp15.c14_cntfrq),
.resetvalue = (1000 * 1000 * 1000) / GTIMER_SCALE,
},
/* overall control: mostly access permissions */
{ .name = "CNTKCTL", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .opc1 = 0, .crn = 14, .crm = 1, .opc2 = 0,
.access = PL1_RW,
.fieldoffset = offsetof(CPUARMState, cp15.c14_cntkctl),
.resetvalue = 0,
},
/* per-timer control */
{ .name = "CNTP_CTL", .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 1,
.secure = ARM_CP_SECSTATE_NS,
.type = ARM_CP_IO | ARM_CP_ALIAS, .access = PL1_RW | PL0_R,
.accessfn = gt_ptimer_access,
.fieldoffset = offsetoflow32(CPUARMState,
cp15.c14_timer[GTIMER_PHYS].ctl),
.writefn = gt_phys_ctl_write, .raw_writefn = raw_write,
},
{ .name = "CNTP_CTL(S)",
.cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 1,
.secure = ARM_CP_SECSTATE_S,
.type = ARM_CP_IO | ARM_CP_ALIAS, .access = PL1_RW | PL0_R,
.accessfn = gt_ptimer_access,
.fieldoffset = offsetoflow32(CPUARMState,
cp15.c14_timer[GTIMER_SEC].ctl),
.writefn = gt_sec_ctl_write, .raw_writefn = raw_write,
},
{ .name = "CNTP_CTL_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .crn = 14, .crm = 2, .opc2 = 1,
.type = ARM_CP_IO, .access = PL1_RW | PL0_R,
.accessfn = gt_ptimer_access,
.fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_PHYS].ctl),
.resetvalue = 0,
.writefn = gt_phys_ctl_write, .raw_writefn = raw_write,
},
{ .name = "CNTV_CTL", .cp = 15, .crn = 14, .crm = 3, .opc1 = 0, .opc2 = 1,
.type = ARM_CP_IO | ARM_CP_ALIAS, .access = PL1_RW | PL0_R,
.accessfn = gt_vtimer_access,
.fieldoffset = offsetoflow32(CPUARMState,
cp15.c14_timer[GTIMER_VIRT].ctl),
.writefn = gt_virt_ctl_write, .raw_writefn = raw_write,
},
{ .name = "CNTV_CTL_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .crn = 14, .crm = 3, .opc2 = 1,
.type = ARM_CP_IO, .access = PL1_RW | PL0_R,
.accessfn = gt_vtimer_access,
.fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_VIRT].ctl),
.resetvalue = 0,
.writefn = gt_virt_ctl_write, .raw_writefn = raw_write,
},
/* TimerValue views: a 32 bit downcounting view of the underlying state */
{ .name = "CNTP_TVAL", .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 0,
.secure = ARM_CP_SECSTATE_NS,
.type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R,
.accessfn = gt_ptimer_access,
.readfn = gt_phys_tval_read, .writefn = gt_phys_tval_write,
},
{ .name = "CNTP_TVAL(S)",
.cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 0,
.secure = ARM_CP_SECSTATE_S,
.type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R,
.accessfn = gt_ptimer_access,
.readfn = gt_sec_tval_read, .writefn = gt_sec_tval_write,
},
{ .name = "CNTP_TVAL_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .crn = 14, .crm = 2, .opc2 = 0,
.type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R,
.accessfn = gt_ptimer_access, .resetfn = gt_phys_timer_reset,
.readfn = gt_phys_tval_read, .writefn = gt_phys_tval_write,
},
{ .name = "CNTV_TVAL", .cp = 15, .crn = 14, .crm = 3, .opc1 = 0, .opc2 = 0,
.type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R,
.accessfn = gt_vtimer_access,
.readfn = gt_virt_tval_read, .writefn = gt_virt_tval_write,
},
{ .name = "CNTV_TVAL_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .crn = 14, .crm = 3, .opc2 = 0,
.type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R,
.accessfn = gt_vtimer_access, .resetfn = gt_virt_timer_reset,
.readfn = gt_virt_tval_read, .writefn = gt_virt_tval_write,
},
/* The counter itself */
{ .name = "CNTPCT", .cp = 15, .crm = 14, .opc1 = 0,
.access = PL0_R, .type = ARM_CP_64BIT | ARM_CP_NO_RAW | ARM_CP_IO,
.accessfn = gt_pct_access,
.readfn = gt_cnt_read, .resetfn = arm_cp_reset_ignore,
},
{ .name = "CNTPCT_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 1,
.access = PL0_R, .type = ARM_CP_NO_RAW | ARM_CP_IO,
.accessfn = gt_pct_access, .readfn = gt_cnt_read,
},
{ .name = "CNTVCT", .cp = 15, .crm = 14, .opc1 = 1,
.access = PL0_R, .type = ARM_CP_64BIT | ARM_CP_NO_RAW | ARM_CP_IO,
.accessfn = gt_vct_access,
.readfn = gt_virt_cnt_read, .resetfn = arm_cp_reset_ignore,
},
{ .name = "CNTVCT_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 2,
.access = PL0_R, .type = ARM_CP_NO_RAW | ARM_CP_IO,
.accessfn = gt_vct_access, .readfn = gt_virt_cnt_read,
},
/* Comparison value, indicating when the timer goes off */
{ .name = "CNTP_CVAL", .cp = 15, .crm = 14, .opc1 = 2,
.secure = ARM_CP_SECSTATE_NS,
.access = PL1_RW | PL0_R,
.type = ARM_CP_64BIT | ARM_CP_IO | ARM_CP_ALIAS,
.fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_PHYS].cval),
.accessfn = gt_ptimer_access,
.writefn = gt_phys_cval_write, .raw_writefn = raw_write,
},
{ .name = "CNTP_CVAL(S)", .cp = 15, .crm = 14, .opc1 = 2,
.secure = ARM_CP_SECSTATE_S,
.access = PL1_RW | PL0_R,
.type = ARM_CP_64BIT | ARM_CP_IO | ARM_CP_ALIAS,
.fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_SEC].cval),
.accessfn = gt_ptimer_access,
.writefn = gt_sec_cval_write, .raw_writefn = raw_write,
},
{ .name = "CNTP_CVAL_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .crn = 14, .crm = 2, .opc2 = 2,
.access = PL1_RW | PL0_R,
.type = ARM_CP_IO,
.fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_PHYS].cval),
.resetvalue = 0, .accessfn = gt_ptimer_access,
.writefn = gt_phys_cval_write, .raw_writefn = raw_write,
},
{ .name = "CNTV_CVAL", .cp = 15, .crm = 14, .opc1 = 3,
.access = PL1_RW | PL0_R,
.type = ARM_CP_64BIT | ARM_CP_IO | ARM_CP_ALIAS,
.fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_VIRT].cval),
.accessfn = gt_vtimer_access,
.writefn = gt_virt_cval_write, .raw_writefn = raw_write,
},
{ .name = "CNTV_CVAL_EL0", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .crn = 14, .crm = 3, .opc2 = 2,
.access = PL1_RW | PL0_R,
.type = ARM_CP_IO,
.fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_VIRT].cval),
.resetvalue = 0, .accessfn = gt_vtimer_access,
.writefn = gt_virt_cval_write, .raw_writefn = raw_write,
},
/* Secure timer -- this is actually restricted to only EL3
* and configurably Secure-EL1 via the accessfn.
*/
{ .name = "CNTPS_TVAL_EL1", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 7, .crn = 14, .crm = 2, .opc2 = 0,
.type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW,
.accessfn = gt_stimer_access,
.readfn = gt_sec_tval_read,
.writefn = gt_sec_tval_write,
.resetfn = gt_sec_timer_reset,
},
{ .name = "CNTPS_CTL_EL1", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 7, .crn = 14, .crm = 2, .opc2 = 1,
.type = ARM_CP_IO, .access = PL1_RW,
.accessfn = gt_stimer_access,
.fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_SEC].ctl),
.resetvalue = 0,
.writefn = gt_sec_ctl_write, .raw_writefn = raw_write,
},
{ .name = "CNTPS_CVAL_EL1", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 7, .crn = 14, .crm = 2, .opc2 = 2,
.type = ARM_CP_IO, .access = PL1_RW,
.accessfn = gt_stimer_access,
.fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_SEC].cval),
.writefn = gt_sec_cval_write, .raw_writefn = raw_write,
},
REGINFO_SENTINEL
};
#else
/* In user-mode none of the generic timer registers are accessible,
* and their implementation depends on QEMU_CLOCK_VIRTUAL and qdev gpio outputs,
* so instead just don't register any of them.
*/
static const ARMCPRegInfo generic_timer_cp_reginfo[] = {
REGINFO_SENTINEL
};
#endif
static void par_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
{
if (arm_feature(env, ARM_FEATURE_LPAE)) {
raw_write(env, ri, value);
} else if (arm_feature(env, ARM_FEATURE_V7)) {
raw_write(env, ri, value & 0xfffff6ff);
} else {
raw_write(env, ri, value & 0xfffff1ff);
}
}
#ifndef CONFIG_USER_ONLY
/* get_phys_addr() isn't present for user-mode-only targets */
static CPAccessResult ats_access(CPUARMState *env, const ARMCPRegInfo *ri,
bool isread)
{
if (ri->opc2 & 4) {
/* The ATS12NSO* operations must trap to EL3 if executed in
* Secure EL1 (which can only happen if EL3 is AArch64).
* They are simply UNDEF if executed from NS EL1.
* They function normally from EL2 or EL3.
*/
if (arm_current_el(env) == 1) {
if (arm_is_secure_below_el3(env)) {
return CP_ACCESS_TRAP_UNCATEGORIZED_EL3;
}
return CP_ACCESS_TRAP_UNCATEGORIZED;
}
}
return CP_ACCESS_OK;
}
static uint64_t do_ats_write(CPUARMState *env, uint64_t value,
int access_type, ARMMMUIdx mmu_idx)
{
hwaddr phys_addr;
target_ulong page_size;
int prot;
uint32_t fsr;
bool ret;
uint64_t par64;
MemTxAttrs attrs = {};
ARMMMUFaultInfo fi = {};
ret = get_phys_addr(env, value, access_type, mmu_idx,
&phys_addr, &attrs, &prot, &page_size, &fsr, &fi);
if (extended_addresses_enabled(env)) {
/* fsr is a DFSR/IFSR value for the long descriptor
* translation table format, but with WnR always clear.
* Convert it to a 64-bit PAR.
*/
par64 = (1 << 11); /* LPAE bit always set */
if (!ret) {
par64 |= phys_addr & ~0xfffULL;
if (!attrs.secure) {
par64 |= (1 << 9); /* NS */
}
/* We don't set the ATTR or SH fields in the PAR. */
} else {
par64 |= 1; /* F */
par64 |= (fsr & 0x3f) << 1; /* FS */
/* Note that S2WLK and FSTAGE are always zero, because we don't
* implement virtualization and therefore there can't be a stage 2
* fault.
*/
}
} else {
/* fsr is a DFSR/IFSR value for the short descriptor
* translation table format (with WnR always clear).
* Convert it to a 32-bit PAR.
*/
if (!ret) {
/* We do not set any attribute bits in the PAR */
if (page_size == (1 << 24)
&& arm_feature(env, ARM_FEATURE_V7)) {
par64 = (phys_addr & 0xff000000) | (1 << 1);
} else {
par64 = phys_addr & 0xfffff000;
}
if (!attrs.secure) {
par64 |= (1 << 9); /* NS */
}
} else {
par64 = ((fsr & (1 << 10)) >> 5) | ((fsr & (1 << 12)) >> 6) |
((fsr & 0xf) << 1) | 1;
}
}
return par64;
}
static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
{
int access_type = ri->opc2 & 1;
uint64_t par64;
ARMMMUIdx mmu_idx;
int el = arm_current_el(env);
bool secure = arm_is_secure_below_el3(env);
switch (ri->opc2 & 6) {
case 0:
/* stage 1 current state PL1: ATS1CPR, ATS1CPW */
switch (el) {
case 3:
mmu_idx = ARMMMUIdx_S1E3;
break;
case 2:
mmu_idx = ARMMMUIdx_S1NSE1;
break;
case 1:
mmu_idx = secure ? ARMMMUIdx_S1SE1 : ARMMMUIdx_S1NSE1;
break;
default:
g_assert_not_reached();
}
break;
case 2:
/* stage 1 current state PL0: ATS1CUR, ATS1CUW */
switch (el) {
case 3:
mmu_idx = ARMMMUIdx_S1SE0;
break;
case 2:
mmu_idx = ARMMMUIdx_S1NSE0;
break;
case 1:
mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S1NSE0;
break;
default:
g_assert_not_reached();
}
break;
case 4:
/* stage 1+2 NonSecure PL1: ATS12NSOPR, ATS12NSOPW */
mmu_idx = ARMMMUIdx_S12NSE1;
break;
case 6:
/* stage 1+2 NonSecure PL0: ATS12NSOUR, ATS12NSOUW */
mmu_idx = ARMMMUIdx_S12NSE0;
break;
default:
g_assert_not_reached();
}
par64 = do_ats_write(env, value, access_type, mmu_idx);
A32_BANKED_CURRENT_REG_SET(env, par, par64);
}
static void ats1h_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
int access_type = ri->opc2 & 1;
uint64_t par64;
par64 = do_ats_write(env, value, access_type, ARMMMUIdx_S2NS);
A32_BANKED_CURRENT_REG_SET(env, par, par64);
}
static CPAccessResult at_s1e2_access(CPUARMState *env, const ARMCPRegInfo *ri,
bool isread)
{
if (arm_current_el(env) == 3 && !(env->cp15.scr_el3 & SCR_NS)) {
return CP_ACCESS_TRAP;
}
return CP_ACCESS_OK;
}
static void ats_write64(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
int access_type = ri->opc2 & 1;
ARMMMUIdx mmu_idx;
int secure = arm_is_secure_below_el3(env);
switch (ri->opc2 & 6) {
case 0:
switch (ri->opc1) {
case 0: /* AT S1E1R, AT S1E1W */
mmu_idx = secure ? ARMMMUIdx_S1SE1 : ARMMMUIdx_S1NSE1;
break;
case 4: /* AT S1E2R, AT S1E2W */
mmu_idx = ARMMMUIdx_S1E2;
break;
case 6: /* AT S1E3R, AT S1E3W */
mmu_idx = ARMMMUIdx_S1E3;
break;
default:
g_assert_not_reached();
}
break;
case 2: /* AT S1E0R, AT S1E0W */
mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S1NSE0;
break;
case 4: /* AT S12E1R, AT S12E1W */
mmu_idx = secure ? ARMMMUIdx_S1SE1 : ARMMMUIdx_S12NSE1;
break;
case 6: /* AT S12E0R, AT S12E0W */
mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S12NSE0;
break;
default:
g_assert_not_reached();
}
env->cp15.par_el[1] = do_ats_write(env, value, access_type, mmu_idx);
}
#endif
static const ARMCPRegInfo vapa_cp_reginfo[] = {
{ .name = "PAR", .cp = 15, .crn = 7, .crm = 4, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .resetvalue = 0,
.bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.par_s),
offsetoflow32(CPUARMState, cp15.par_ns) },
.writefn = par_write },
#ifndef CONFIG_USER_ONLY
/* This underdecoding is safe because the reginfo is NO_RAW. */
{ .name = "ATS", .cp = 15, .crn = 7, .crm = 8, .opc1 = 0, .opc2 = CP_ANY,
.access = PL1_W, .accessfn = ats_access,
.writefn = ats_write, .type = ARM_CP_NO_RAW },
#endif
REGINFO_SENTINEL
};
/* Return basic MPU access permission bits. */
static uint32_t simple_mpu_ap_bits(uint32_t val)
{
uint32_t ret;
uint32_t mask;
int i;
ret = 0;
mask = 3;
for (i = 0; i < 16; i += 2) {
ret |= (val >> i) & mask;
mask <<= 2;
}
return ret;
}
/* Pad basic MPU access permission bits to extended format. */
static uint32_t extended_mpu_ap_bits(uint32_t val)
{
uint32_t ret;
uint32_t mask;
int i;
ret = 0;
mask = 3;
for (i = 0; i < 16; i += 2) {
ret |= (val & mask) << i;
mask <<= 2;
}
return ret;
}
static void pmsav5_data_ap_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
env->cp15.pmsav5_data_ap = extended_mpu_ap_bits(value);
}
static uint64_t pmsav5_data_ap_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
return simple_mpu_ap_bits(env->cp15.pmsav5_data_ap);
}
static void pmsav5_insn_ap_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
env->cp15.pmsav5_insn_ap = extended_mpu_ap_bits(value);
}
static uint64_t pmsav5_insn_ap_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
return simple_mpu_ap_bits(env->cp15.pmsav5_insn_ap);
}
static uint64_t pmsav7_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
uint32_t *u32p = *(uint32_t **)raw_ptr(env, ri);
if (!u32p) {
return 0;
}
u32p += env->cp15.c6_rgnr;
return *u32p;
}
static void pmsav7_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
ARMCPU *cpu = arm_env_get_cpu(env);
uint32_t *u32p = *(uint32_t **)raw_ptr(env, ri);
if (!u32p) {
return;
}
u32p += env->cp15.c6_rgnr;
tlb_flush(CPU(cpu), 1); /* Mappings may have changed - purge! */
*u32p = value;
}
static void pmsav7_reset(CPUARMState *env, const ARMCPRegInfo *ri)
{
ARMCPU *cpu = arm_env_get_cpu(env);
uint32_t *u32p = *(uint32_t **)raw_ptr(env, ri);
if (!u32p) {
return;
}
memset(u32p, 0, sizeof(*u32p) * cpu->pmsav7_dregion);
}
static void pmsav7_rgnr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
ARMCPU *cpu = arm_env_get_cpu(env);
uint32_t nrgs = cpu->pmsav7_dregion;
if (value >= nrgs) {
qemu_log_mask(LOG_GUEST_ERROR,
"PMSAv7 RGNR write >= # supported regions, %" PRIu32
" > %" PRIu32 "\n", (uint32_t)value, nrgs);
return;
}
raw_write(env, ri, value);
}
static const ARMCPRegInfo pmsav7_cp_reginfo[] = {
{ .name = "DRBAR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 1, .opc2 = 0,
.access = PL1_RW, .type = ARM_CP_NO_RAW,
.fieldoffset = offsetof(CPUARMState, pmsav7.drbar),
.readfn = pmsav7_read, .writefn = pmsav7_write, .resetfn = pmsav7_reset },
{ .name = "DRSR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 1, .opc2 = 2,
.access = PL1_RW, .type = ARM_CP_NO_RAW,
.fieldoffset = offsetof(CPUARMState, pmsav7.drsr),
.readfn = pmsav7_read, .writefn = pmsav7_write, .resetfn = pmsav7_reset },
{ .name = "DRACR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 1, .opc2 = 4,
.access = PL1_RW, .type = ARM_CP_NO_RAW,
.fieldoffset = offsetof(CPUARMState, pmsav7.dracr),
.readfn = pmsav7_read, .writefn = pmsav7_write, .resetfn = pmsav7_reset },
{ .name = "RGNR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 2, .opc2 = 0,
.access = PL1_RW,
.fieldoffset = offsetof(CPUARMState, cp15.c6_rgnr),
.writefn = pmsav7_rgnr_write },
REGINFO_SENTINEL
};
static const ARMCPRegInfo pmsav5_cp_reginfo[] = {
{ .name = "DATA_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .type = ARM_CP_ALIAS,
.fieldoffset = offsetof(CPUARMState, cp15.pmsav5_data_ap),
.readfn = pmsav5_data_ap_read, .writefn = pmsav5_data_ap_write, },
{ .name = "INSN_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 1,
.access = PL1_RW, .type = ARM_CP_ALIAS,
.fieldoffset = offsetof(CPUARMState, cp15.pmsav5_insn_ap),
.readfn = pmsav5_insn_ap_read, .writefn = pmsav5_insn_ap_write, },
{ .name = "DATA_EXT_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 2,
.access = PL1_RW,
.fieldoffset = offsetof(CPUARMState, cp15.pmsav5_data_ap),
.resetvalue = 0, },
{ .name = "INSN_EXT_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 3,
.access = PL1_RW,
.fieldoffset = offsetof(CPUARMState, cp15.pmsav5_insn_ap),
.resetvalue = 0, },
{ .name = "DCACHE_CFG", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 0,
.access = PL1_RW,
.fieldoffset = offsetof(CPUARMState, cp15.c2_data), .resetvalue = 0, },
{ .name = "ICACHE_CFG", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 1,
.access = PL1_RW,
.fieldoffset = offsetof(CPUARMState, cp15.c2_insn), .resetvalue = 0, },
/* Protection region base and size registers */
{ .name = "946_PRBS0", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0,
.opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
.fieldoffset = offsetof(CPUARMState, cp15.c6_region[0]) },
{ .name = "946_PRBS1", .cp = 15, .crn = 6, .crm = 1, .opc1 = 0,
.opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
.fieldoffset = offsetof(CPUARMState, cp15.c6_region[1]) },
{ .name = "946_PRBS2", .cp = 15, .crn = 6, .crm = 2, .opc1 = 0,
.opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
.fieldoffset = offsetof(CPUARMState, cp15.c6_region[2]) },
{ .name = "946_PRBS3", .cp = 15, .crn = 6, .crm = 3, .opc1 = 0,
.opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
.fieldoffset = offsetof(CPUARMState, cp15.c6_region[3]) },
{ .name = "946_PRBS4", .cp = 15, .crn = 6, .crm = 4, .opc1 = 0,
.opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
.fieldoffset = offsetof(CPUARMState, cp15.c6_region[4]) },
{ .name = "946_PRBS5", .cp = 15, .crn = 6, .crm = 5, .opc1 = 0,
.opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
.fieldoffset = offsetof(CPUARMState, cp15.c6_region[5]) },
{ .name = "946_PRBS6", .cp = 15, .crn = 6, .crm = 6, .opc1 = 0,
.opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
.fieldoffset = offsetof(CPUARMState, cp15.c6_region[6]) },
{ .name = "946_PRBS7", .cp = 15, .crn = 6, .crm = 7, .opc1 = 0,
.opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
.fieldoffset = offsetof(CPUARMState, cp15.c6_region[7]) },
REGINFO_SENTINEL
};
static void vmsa_ttbcr_raw_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
TCR *tcr = raw_ptr(env, ri);
int maskshift = extract32(value, 0, 3);
if (!arm_feature(env, ARM_FEATURE_V8)) {
if (arm_feature(env, ARM_FEATURE_LPAE) && (value & TTBCR_EAE)) {
/* Pre ARMv8 bits [21:19], [15:14] and [6:3] are UNK/SBZP when
* using Long-desciptor translation table format */
value &= ~((7 << 19) | (3 << 14) | (0xf << 3));
} else if (arm_feature(env, ARM_FEATURE_EL3)) {
/* In an implementation that includes the Security Extensions
* TTBCR has additional fields PD0 [4] and PD1 [5] for
* Short-descriptor translation table format.
*/
value &= TTBCR_PD1 | TTBCR_PD0 | TTBCR_N;
} else {
value &= TTBCR_N;
}
}
/* Update the masks corresponding to the TCR bank being written
* Note that we always calculate mask and base_mask, but
* they are only used for short-descriptor tables (ie if EAE is 0);
* for long-descriptor tables the TCR fields are used differently
* and the mask and base_mask values are meaningless.
*/
tcr->raw_tcr = value;
tcr->mask = ~(((uint32_t)0xffffffffu) >> maskshift);
tcr->base_mask = ~((uint32_t)0x3fffu >> maskshift);
}
static void vmsa_ttbcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
ARMCPU *cpu = arm_env_get_cpu(env);
if (arm_feature(env, ARM_FEATURE_LPAE)) {
/* With LPAE the TTBCR could result in a change of ASID
* via the TTBCR.A1 bit, so do a TLB flush.
*/
tlb_flush(CPU(cpu), 1);
}
vmsa_ttbcr_raw_write(env, ri, value);
}
static void vmsa_ttbcr_reset(CPUARMState *env, const ARMCPRegInfo *ri)
{
TCR *tcr = raw_ptr(env, ri);
/* Reset both the TCR as well as the masks corresponding to the bank of
* the TCR being reset.
*/
tcr->raw_tcr = 0;
tcr->mask = 0;
tcr->base_mask = 0xffffc000u;
}
static void vmsa_tcr_el1_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
ARMCPU *cpu = arm_env_get_cpu(env);
TCR *tcr = raw_ptr(env, ri);
/* For AArch64 the A1 bit could result in a change of ASID, so TLB flush. */
tlb_flush(CPU(cpu), 1);
tcr->raw_tcr = value;
}
static void vmsa_ttbr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
/* 64 bit accesses to the TTBRs can change the ASID and so we
* must flush the TLB.
*/