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qemu/target/arm/cpu64.c
Peter Maydell c410772351 target/arm: Avoid over-length shift in arm_cpu_sve_finalize() error case 
If you build QEMU with the clang sanitizer enabled, you can see it
fire when running the arm-cpu-features test:

$ QTEST_QEMU_BINARY=./build/arm-clang/qemu-system-aarch64 ./build/arm-clang/tests/qtest/arm-cpu-features
[...]
../../target/arm/cpu64.c:125:19: runtime error: shift exponent 64 is too large for 64-bit type 'unsigned long long'
[...]

This happens because the user can specify some incorrect SVE
properties that result in our calculating a max_vq of 0.  We catch
this and error out, but before we do that we calculate

 vq_mask = MAKE_64BIT_MASK(0, max_vq);$

and the MAKE_64BIT_MASK() call is only valid for lengths that are
greater than zero, so we hit the undefined behaviour.

Change the logic so that if max_vq is 0 we specifically set vq_mask
to 0 without going via MAKE_64BIT_MASK().  This lets us drop the
max_vq check from the error-exit logic, because if max_vq is 0 then
vq_map must now be 0.

The UB only happens in the case where the user passed us an incorrect
set of SVE properties, so it's not a big problem in practice.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230704154332.3014896-1-peter.maydell@linaro.org
2023-07-06 13:36:51 +01:00

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/*
* QEMU AArch64 CPU
*
* Copyright (c) 2013 Linaro Ltd
*
* 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 "qapi/error.h"
#include "cpu.h"
#include "cpregs.h"
#include "qemu/module.h"
#include "sysemu/kvm.h"
#include "sysemu/hvf.h"
#include "sysemu/qtest.h"
#include "sysemu/tcg.h"
#include "kvm_arm.h"
#include "hvf_arm.h"
#include "qapi/visitor.h"
#include "hw/qdev-properties.h"
#include "internals.h"
#include "cpregs.h"
void arm_cpu_sve_finalize(ARMCPU *cpu, Error **errp)
{
/*
* If any vector lengths are explicitly enabled with sve<N> properties,
* then all other lengths are implicitly disabled. If sve-max-vq is
* specified then it is the same as explicitly enabling all lengths
* up to and including the specified maximum, which means all larger
* lengths will be implicitly disabled. If no sve<N> properties
* are enabled and sve-max-vq is not specified, then all lengths not
* explicitly disabled will be enabled. Additionally, all power-of-two
* vector lengths less than the maximum enabled length will be
* automatically enabled and all vector lengths larger than the largest
* disabled power-of-two vector length will be automatically disabled.
* Errors are generated if the user provided input that interferes with
* any of the above. Finally, if SVE is not disabled, then at least one
* vector length must be enabled.
*/
uint32_t vq_map = cpu->sve_vq.map;
uint32_t vq_init = cpu->sve_vq.init;
uint32_t vq_supported;
uint32_t vq_mask = 0;
uint32_t tmp, vq, max_vq = 0;
/*
* CPU models specify a set of supported vector lengths which are
* enabled by default. Attempting to enable any vector length not set
* in the supported bitmap results in an error. When KVM is enabled we
* fetch the supported bitmap from the host.
*/
if (kvm_enabled()) {
if (kvm_arm_sve_supported()) {
cpu->sve_vq.supported = kvm_arm_sve_get_vls(CPU(cpu));
vq_supported = cpu->sve_vq.supported;
} else {
assert(!cpu_isar_feature(aa64_sve, cpu));
vq_supported = 0;
}
} else {
vq_supported = cpu->sve_vq.supported;
}
/*
* Process explicit sve<N> properties.
* From the properties, sve_vq_map<N> implies sve_vq_init<N>.
* Check first for any sve<N> enabled.
*/
if (vq_map != 0) {
max_vq = 32 - clz32(vq_map);
vq_mask = MAKE_64BIT_MASK(0, max_vq);
if (cpu->sve_max_vq && max_vq > cpu->sve_max_vq) {
error_setg(errp, "cannot enable sve%d", max_vq * 128);
error_append_hint(errp, "sve%d is larger than the maximum vector "
"length, sve-max-vq=%d (%d bits)\n",
max_vq * 128, cpu->sve_max_vq,
cpu->sve_max_vq * 128);
return;
}
if (kvm_enabled()) {
/*
* For KVM we have to automatically enable all supported unitialized
* lengths, even when the smaller lengths are not all powers-of-two.
*/
vq_map |= vq_supported & ~vq_init & vq_mask;
} else {
/* Propagate enabled bits down through required powers-of-two. */
vq_map |= SVE_VQ_POW2_MAP & ~vq_init & vq_mask;
}
} else if (cpu->sve_max_vq == 0) {
/*
* No explicit bits enabled, and no implicit bits from sve-max-vq.
*/
if (!cpu_isar_feature(aa64_sve, cpu)) {
/* SVE is disabled and so are all vector lengths. Good. */
return;
}
if (kvm_enabled()) {
/* Disabling a supported length disables all larger lengths. */
tmp = vq_init & vq_supported;
} else {
/* Disabling a power-of-two disables all larger lengths. */
tmp = vq_init & SVE_VQ_POW2_MAP;
}
vq = ctz32(tmp) + 1;
max_vq = vq <= ARM_MAX_VQ ? vq - 1 : ARM_MAX_VQ;
vq_mask = max_vq > 0 ? MAKE_64BIT_MASK(0, max_vq) : 0;
vq_map = vq_supported & ~vq_init & vq_mask;
if (vq_map == 0) {
error_setg(errp, "cannot disable sve%d", vq * 128);
error_append_hint(errp, "Disabling sve%d results in all "
"vector lengths being disabled.\n",
vq * 128);
error_append_hint(errp, "With SVE enabled, at least one "
"vector length must be enabled.\n");
return;
}
max_vq = 32 - clz32(vq_map);
vq_mask = MAKE_64BIT_MASK(0, max_vq);
}
/*
* Process the sve-max-vq property.
* Note that we know from the above that no bit above
* sve-max-vq is currently set.
*/
if (cpu->sve_max_vq != 0) {
max_vq = cpu->sve_max_vq;
vq_mask = MAKE_64BIT_MASK(0, max_vq);
if (vq_init & ~vq_map & (1 << (max_vq - 1))) {
error_setg(errp, "cannot disable sve%d", max_vq * 128);
error_append_hint(errp, "The maximum vector length must be "
"enabled, sve-max-vq=%d (%d bits)\n",
max_vq, max_vq * 128);
return;
}
/* Set all bits not explicitly set within sve-max-vq. */
vq_map |= ~vq_init & vq_mask;
}
/*
* We should know what max-vq is now. Also, as we're done
* manipulating sve-vq-map, we ensure any bits above max-vq
* are clear, just in case anybody looks.
*/
assert(max_vq != 0);
assert(vq_mask != 0);
vq_map &= vq_mask;
/* Ensure the set of lengths matches what is supported. */
tmp = vq_map ^ (vq_supported & vq_mask);
if (tmp) {
vq = 32 - clz32(tmp);
if (vq_map & (1 << (vq - 1))) {
if (cpu->sve_max_vq) {
error_setg(errp, "cannot set sve-max-vq=%d", cpu->sve_max_vq);
error_append_hint(errp, "This CPU does not support "
"the vector length %d-bits.\n", vq * 128);
error_append_hint(errp, "It may not be possible to use "
"sve-max-vq with this CPU. Try "
"using only sve<N> properties.\n");
} else {
error_setg(errp, "cannot enable sve%d", vq * 128);
if (vq_supported) {
error_append_hint(errp, "This CPU does not support "
"the vector length %d-bits.\n", vq * 128);
} else {
error_append_hint(errp, "SVE not supported by KVM "
"on this host\n");
}
}
return;
} else {
if (kvm_enabled()) {
error_setg(errp, "cannot disable sve%d", vq * 128);
error_append_hint(errp, "The KVM host requires all "
"supported vector lengths smaller "
"than %d bits to also be enabled.\n",
max_vq * 128);
return;
} else {
/* Ensure all required powers-of-two are enabled. */
tmp = SVE_VQ_POW2_MAP & vq_mask & ~vq_map;
if (tmp) {
vq = 32 - clz32(tmp);
error_setg(errp, "cannot disable sve%d", vq * 128);
error_append_hint(errp, "sve%d is required as it "
"is a power-of-two length smaller "
"than the maximum, sve%d\n",
vq * 128, max_vq * 128);
return;
}
}
}
}
/*
* Now that we validated all our vector lengths, the only question
* left to answer is if we even want SVE at all.
*/
if (!cpu_isar_feature(aa64_sve, cpu)) {
error_setg(errp, "cannot enable sve%d", max_vq * 128);
error_append_hint(errp, "SVE must be enabled to enable vector "
"lengths.\n");
error_append_hint(errp, "Add sve=on to the CPU property list.\n");
return;
}
/* From now on sve_max_vq is the actual maximum supported length. */
cpu->sve_max_vq = max_vq;
cpu->sve_vq.map = vq_map;
}
/*
* Note that cpu_arm_{get,set}_vq cannot use the simpler
* object_property_add_bool interface because they make use of the
* contents of "name" to determine which bit on which to operate.
*/
static void cpu_arm_get_vq(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
ARMCPU *cpu = ARM_CPU(obj);
ARMVQMap *vq_map = opaque;
uint32_t vq = atoi(&name[3]) / 128;
bool sve = vq_map == &cpu->sve_vq;
bool value;
/* All vector lengths are disabled when feature is off. */
if (sve
? !cpu_isar_feature(aa64_sve, cpu)
: !cpu_isar_feature(aa64_sme, cpu)) {
value = false;
} else {
value = extract32(vq_map->map, vq - 1, 1);
}
visit_type_bool(v, name, &value, errp);
}
static void cpu_arm_set_vq(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
ARMVQMap *vq_map = opaque;
uint32_t vq = atoi(&name[3]) / 128;
bool value;
if (!visit_type_bool(v, name, &value, errp)) {
return;
}
vq_map->map = deposit32(vq_map->map, vq - 1, 1, value);
vq_map->init |= 1 << (vq - 1);
}
static bool cpu_arm_get_sve(Object *obj, Error **errp)
{
ARMCPU *cpu = ARM_CPU(obj);
return cpu_isar_feature(aa64_sve, cpu);
}
static void cpu_arm_set_sve(Object *obj, bool value, Error **errp)
{
ARMCPU *cpu = ARM_CPU(obj);
uint64_t t;
if (value && kvm_enabled() && !kvm_arm_sve_supported()) {
error_setg(errp, "'sve' feature not supported by KVM on this host");
return;
}
t = cpu->isar.id_aa64pfr0;
t = FIELD_DP64(t, ID_AA64PFR0, SVE, value);
cpu->isar.id_aa64pfr0 = t;
}
void arm_cpu_sme_finalize(ARMCPU *cpu, Error **errp)
{
uint32_t vq_map = cpu->sme_vq.map;
uint32_t vq_init = cpu->sme_vq.init;
uint32_t vq_supported = cpu->sme_vq.supported;
uint32_t vq;
if (vq_map == 0) {
if (!cpu_isar_feature(aa64_sme, cpu)) {
cpu->isar.id_aa64smfr0 = 0;
return;
}
/* TODO: KVM will require limitations via SMCR_EL2. */
vq_map = vq_supported & ~vq_init;
if (vq_map == 0) {
vq = ctz32(vq_supported) + 1;
error_setg(errp, "cannot disable sme%d", vq * 128);
error_append_hint(errp, "All SME vector lengths are disabled.\n");
error_append_hint(errp, "With SME enabled, at least one "
"vector length must be enabled.\n");
return;
}
} else {
if (!cpu_isar_feature(aa64_sme, cpu)) {
vq = 32 - clz32(vq_map);
error_setg(errp, "cannot enable sme%d", vq * 128);
error_append_hint(errp, "SME must be enabled to enable "
"vector lengths.\n");
error_append_hint(errp, "Add sme=on to the CPU property list.\n");
return;
}
/* TODO: KVM will require limitations via SMCR_EL2. */
}
cpu->sme_vq.map = vq_map;
}
static bool cpu_arm_get_sme(Object *obj, Error **errp)
{
ARMCPU *cpu = ARM_CPU(obj);
return cpu_isar_feature(aa64_sme, cpu);
}
static void cpu_arm_set_sme(Object *obj, bool value, Error **errp)
{
ARMCPU *cpu = ARM_CPU(obj);
uint64_t t;
t = cpu->isar.id_aa64pfr1;
t = FIELD_DP64(t, ID_AA64PFR1, SME, value);
cpu->isar.id_aa64pfr1 = t;
}
static bool cpu_arm_get_sme_fa64(Object *obj, Error **errp)
{
ARMCPU *cpu = ARM_CPU(obj);
return cpu_isar_feature(aa64_sme, cpu) &&
cpu_isar_feature(aa64_sme_fa64, cpu);
}
static void cpu_arm_set_sme_fa64(Object *obj, bool value, Error **errp)
{
ARMCPU *cpu = ARM_CPU(obj);
uint64_t t;
t = cpu->isar.id_aa64smfr0;
t = FIELD_DP64(t, ID_AA64SMFR0, FA64, value);
cpu->isar.id_aa64smfr0 = t;
}
#ifdef CONFIG_USER_ONLY
/* Mirror linux /proc/sys/abi/{sve,sme}_default_vector_length. */
static void cpu_arm_set_default_vec_len(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
uint32_t *ptr_default_vq = opaque;
int32_t default_len, default_vq, remainder;
if (!visit_type_int32(v, name, &default_len, errp)) {
return;
}
/* Undocumented, but the kernel allows -1 to indicate "maximum". */
if (default_len == -1) {
*ptr_default_vq = ARM_MAX_VQ;
return;
}
default_vq = default_len / 16;
remainder = default_len % 16;
/*
* Note that the 512 max comes from include/uapi/asm/sve_context.h
* and is the maximum architectural width of ZCR_ELx.LEN.
*/
if (remainder || default_vq < 1 || default_vq > 512) {
ARMCPU *cpu = ARM_CPU(obj);
const char *which =
(ptr_default_vq == &cpu->sve_default_vq ? "sve" : "sme");
error_setg(errp, "cannot set %s-default-vector-length", which);
if (remainder) {
error_append_hint(errp, "Vector length not a multiple of 16\n");
} else if (default_vq < 1) {
error_append_hint(errp, "Vector length smaller than 16\n");
} else {
error_append_hint(errp, "Vector length larger than %d\n",
512 * 16);
}
return;
}
*ptr_default_vq = default_vq;
}
static void cpu_arm_get_default_vec_len(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
uint32_t *ptr_default_vq = opaque;
int32_t value = *ptr_default_vq * 16;
visit_type_int32(v, name, &value, errp);
}
#endif
void aarch64_add_sve_properties(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
uint32_t vq;
object_property_add_bool(obj, "sve", cpu_arm_get_sve, cpu_arm_set_sve);
for (vq = 1; vq <= ARM_MAX_VQ; ++vq) {
char name[8];
sprintf(name, "sve%d", vq * 128);
object_property_add(obj, name, "bool", cpu_arm_get_vq,
cpu_arm_set_vq, NULL, &cpu->sve_vq);
}
#ifdef CONFIG_USER_ONLY
/* Mirror linux /proc/sys/abi/sve_default_vector_length. */
object_property_add(obj, "sve-default-vector-length", "int32",
cpu_arm_get_default_vec_len,
cpu_arm_set_default_vec_len, NULL,
&cpu->sve_default_vq);
#endif
}
void aarch64_add_sme_properties(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
uint32_t vq;
object_property_add_bool(obj, "sme", cpu_arm_get_sme, cpu_arm_set_sme);
object_property_add_bool(obj, "sme_fa64", cpu_arm_get_sme_fa64,
cpu_arm_set_sme_fa64);
for (vq = 1; vq <= ARM_MAX_VQ; vq <<= 1) {
char name[8];
sprintf(name, "sme%d", vq * 128);
object_property_add(obj, name, "bool", cpu_arm_get_vq,
cpu_arm_set_vq, NULL, &cpu->sme_vq);
}
#ifdef CONFIG_USER_ONLY
/* Mirror linux /proc/sys/abi/sme_default_vector_length. */
object_property_add(obj, "sme-default-vector-length", "int32",
cpu_arm_get_default_vec_len,
cpu_arm_set_default_vec_len, NULL,
&cpu->sme_default_vq);
#endif
}
void arm_cpu_pauth_finalize(ARMCPU *cpu, Error **errp)
{
int arch_val = 0, impdef_val = 0;
uint64_t t;
/* Exit early if PAuth is enabled, and fall through to disable it */
if ((kvm_enabled() || hvf_enabled()) && cpu->prop_pauth) {
if (!cpu_isar_feature(aa64_pauth, cpu)) {
error_setg(errp, "'pauth' feature not supported by %s on this host",
kvm_enabled() ? "KVM" : "hvf");
}
return;
}
/* TODO: Handle HaveEnhancedPAC, HaveEnhancedPAC2, HaveFPAC. */
if (cpu->prop_pauth) {
if (cpu->prop_pauth_impdef) {
impdef_val = 1;
} else {
arch_val = 1;
}
} else if (cpu->prop_pauth_impdef) {
error_setg(errp, "cannot enable pauth-impdef without pauth");
error_append_hint(errp, "Add pauth=on to the CPU property list.\n");
}
t = cpu->isar.id_aa64isar1;
t = FIELD_DP64(t, ID_AA64ISAR1, APA, arch_val);
t = FIELD_DP64(t, ID_AA64ISAR1, GPA, arch_val);
t = FIELD_DP64(t, ID_AA64ISAR1, API, impdef_val);
t = FIELD_DP64(t, ID_AA64ISAR1, GPI, impdef_val);
cpu->isar.id_aa64isar1 = t;
}
static Property arm_cpu_pauth_property =
DEFINE_PROP_BOOL("pauth", ARMCPU, prop_pauth, true);
static Property arm_cpu_pauth_impdef_property =
DEFINE_PROP_BOOL("pauth-impdef", ARMCPU, prop_pauth_impdef, false);
void aarch64_add_pauth_properties(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
/* Default to PAUTH on, with the architected algorithm on TCG. */
qdev_property_add_static(DEVICE(obj), &arm_cpu_pauth_property);
if (kvm_enabled() || hvf_enabled()) {
/*
* Mirror PAuth support from the probed sysregs back into the
* property for KVM or hvf. Is it just a bit backward? Yes it is!
* Note that prop_pauth is true whether the host CPU supports the
* architected QARMA5 algorithm or the IMPDEF one. We don't
* provide the separate pauth-impdef property for KVM or hvf,
* only for TCG.
*/
cpu->prop_pauth = cpu_isar_feature(aa64_pauth, cpu);
} else {
qdev_property_add_static(DEVICE(obj), &arm_cpu_pauth_impdef_property);
}
}
void arm_cpu_lpa2_finalize(ARMCPU *cpu, Error **errp)
{
uint64_t t;
/*
* We only install the property for tcg -cpu max; this is the
* only situation in which the cpu field can be true.
*/
if (!cpu->prop_lpa2) {
return;
}
t = cpu->isar.id_aa64mmfr0;
t = FIELD_DP64(t, ID_AA64MMFR0, TGRAN16, 2); /* 16k pages w/ LPA2 */
t = FIELD_DP64(t, ID_AA64MMFR0, TGRAN4, 1); /* 4k pages w/ LPA2 */
t = FIELD_DP64(t, ID_AA64MMFR0, TGRAN16_2, 3); /* 16k stage2 w/ LPA2 */
t = FIELD_DP64(t, ID_AA64MMFR0, TGRAN4_2, 3); /* 4k stage2 w/ LPA2 */
cpu->isar.id_aa64mmfr0 = t;
}
static void aarch64_a57_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "arm,cortex-a57";
set_feature(&cpu->env, ARM_FEATURE_V8);
set_feature(&cpu->env, ARM_FEATURE_NEON);
set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER);
set_feature(&cpu->env, ARM_FEATURE_AARCH64);
set_feature(&cpu->env, ARM_FEATURE_CBAR_RO);
set_feature(&cpu->env, ARM_FEATURE_EL2);
set_feature(&cpu->env, ARM_FEATURE_EL3);
set_feature(&cpu->env, ARM_FEATURE_PMU);
cpu->kvm_target = QEMU_KVM_ARM_TARGET_CORTEX_A57;
cpu->midr = 0x411fd070;
cpu->revidr = 0x00000000;
cpu->reset_fpsid = 0x41034070;
cpu->isar.mvfr0 = 0x10110222;
cpu->isar.mvfr1 = 0x12111111;
cpu->isar.mvfr2 = 0x00000043;
cpu->ctr = 0x8444c004;
cpu->reset_sctlr = 0x00c50838;
cpu->isar.id_pfr0 = 0x00000131;
cpu->isar.id_pfr1 = 0x00011011;
cpu->isar.id_dfr0 = 0x03010066;
cpu->id_afr0 = 0x00000000;
cpu->isar.id_mmfr0 = 0x10101105;
cpu->isar.id_mmfr1 = 0x40000000;
cpu->isar.id_mmfr2 = 0x01260000;
cpu->isar.id_mmfr3 = 0x02102211;
cpu->isar.id_isar0 = 0x02101110;
cpu->isar.id_isar1 = 0x13112111;
cpu->isar.id_isar2 = 0x21232042;
cpu->isar.id_isar3 = 0x01112131;
cpu->isar.id_isar4 = 0x00011142;
cpu->isar.id_isar5 = 0x00011121;
cpu->isar.id_isar6 = 0;
cpu->isar.id_aa64pfr0 = 0x00002222;
cpu->isar.id_aa64dfr0 = 0x10305106;
cpu->isar.id_aa64isar0 = 0x00011120;
cpu->isar.id_aa64mmfr0 = 0x00001124;
cpu->isar.dbgdidr = 0x3516d000;
cpu->isar.dbgdevid = 0x01110f13;
cpu->isar.dbgdevid1 = 0x2;
cpu->isar.reset_pmcr_el0 = 0x41013000;
cpu->clidr = 0x0a200023;
cpu->ccsidr[0] = 0x701fe00a; /* 32KB L1 dcache */
cpu->ccsidr[1] = 0x201fe012; /* 48KB L1 icache */
cpu->ccsidr[2] = 0x70ffe07a; /* 2048KB L2 cache */
cpu->dcz_blocksize = 4; /* 64 bytes */
cpu->gic_num_lrs = 4;
cpu->gic_vpribits = 5;
cpu->gic_vprebits = 5;
cpu->gic_pribits = 5;
define_cortex_a72_a57_a53_cp_reginfo(cpu);
}
static void aarch64_a53_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "arm,cortex-a53";
set_feature(&cpu->env, ARM_FEATURE_V8);
set_feature(&cpu->env, ARM_FEATURE_NEON);
set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER);
set_feature(&cpu->env, ARM_FEATURE_AARCH64);
set_feature(&cpu->env, ARM_FEATURE_CBAR_RO);
set_feature(&cpu->env, ARM_FEATURE_EL2);
set_feature(&cpu->env, ARM_FEATURE_EL3);
set_feature(&cpu->env, ARM_FEATURE_PMU);
cpu->kvm_target = QEMU_KVM_ARM_TARGET_CORTEX_A53;
cpu->midr = 0x410fd034;
cpu->revidr = 0x00000000;
cpu->reset_fpsid = 0x41034070;
cpu->isar.mvfr0 = 0x10110222;
cpu->isar.mvfr1 = 0x12111111;
cpu->isar.mvfr2 = 0x00000043;
cpu->ctr = 0x84448004; /* L1Ip = VIPT */
cpu->reset_sctlr = 0x00c50838;
cpu->isar.id_pfr0 = 0x00000131;
cpu->isar.id_pfr1 = 0x00011011;
cpu->isar.id_dfr0 = 0x03010066;
cpu->id_afr0 = 0x00000000;
cpu->isar.id_mmfr0 = 0x10101105;
cpu->isar.id_mmfr1 = 0x40000000;
cpu->isar.id_mmfr2 = 0x01260000;
cpu->isar.id_mmfr3 = 0x02102211;
cpu->isar.id_isar0 = 0x02101110;
cpu->isar.id_isar1 = 0x13112111;
cpu->isar.id_isar2 = 0x21232042;
cpu->isar.id_isar3 = 0x01112131;
cpu->isar.id_isar4 = 0x00011142;
cpu->isar.id_isar5 = 0x00011121;
cpu->isar.id_isar6 = 0;
cpu->isar.id_aa64pfr0 = 0x00002222;
cpu->isar.id_aa64dfr0 = 0x10305106;
cpu->isar.id_aa64isar0 = 0x00011120;
cpu->isar.id_aa64mmfr0 = 0x00001122; /* 40 bit physical addr */
cpu->isar.dbgdidr = 0x3516d000;
cpu->isar.dbgdevid = 0x00110f13;
cpu->isar.dbgdevid1 = 0x1;
cpu->isar.reset_pmcr_el0 = 0x41033000;
cpu->clidr = 0x0a200023;
cpu->ccsidr[0] = 0x700fe01a; /* 32KB L1 dcache */
cpu->ccsidr[1] = 0x201fe00a; /* 32KB L1 icache */
cpu->ccsidr[2] = 0x707fe07a; /* 1024KB L2 cache */
cpu->dcz_blocksize = 4; /* 64 bytes */
cpu->gic_num_lrs = 4;
cpu->gic_vpribits = 5;
cpu->gic_vprebits = 5;
cpu->gic_pribits = 5;
define_cortex_a72_a57_a53_cp_reginfo(cpu);
}
static void aarch64_host_initfn(Object *obj)
{
#if defined(CONFIG_KVM)
ARMCPU *cpu = ARM_CPU(obj);
kvm_arm_set_cpu_features_from_host(cpu);
if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) {
aarch64_add_sve_properties(obj);
aarch64_add_pauth_properties(obj);
}
#elif defined(CONFIG_HVF)
ARMCPU *cpu = ARM_CPU(obj);
hvf_arm_set_cpu_features_from_host(cpu);
aarch64_add_pauth_properties(obj);
#else
g_assert_not_reached();
#endif
}
static void aarch64_max_initfn(Object *obj)
{
if (kvm_enabled() || hvf_enabled()) {
/* With KVM or HVF, '-cpu max' is identical to '-cpu host' */
aarch64_host_initfn(obj);
return;
}
if (tcg_enabled() || qtest_enabled()) {
aarch64_a57_initfn(obj);
}
/* '-cpu max' for TCG: we currently do this as "A57 with extra things" */
if (tcg_enabled()) {
aarch64_max_tcg_initfn(obj);
}
}
static const ARMCPUInfo aarch64_cpus[] = {
{ .name = "cortex-a57", .initfn = aarch64_a57_initfn },
{ .name = "cortex-a53", .initfn = aarch64_a53_initfn },
{ .name = "max", .initfn = aarch64_max_initfn },
#if defined(CONFIG_KVM) || defined(CONFIG_HVF)
{ .name = "host", .initfn = aarch64_host_initfn },
#endif
};
static bool aarch64_cpu_get_aarch64(Object *obj, Error **errp)
{
ARMCPU *cpu = ARM_CPU(obj);
return arm_feature(&cpu->env, ARM_FEATURE_AARCH64);
}
static void aarch64_cpu_set_aarch64(Object *obj, bool value, Error **errp)
{
ARMCPU *cpu = ARM_CPU(obj);
/* At this time, this property is only allowed if KVM is enabled. This
* restriction allows us to avoid fixing up functionality that assumes a
* uniform execution state like do_interrupt.
*/
if (value == false) {
if (!kvm_enabled() || !kvm_arm_aarch32_supported()) {
error_setg(errp, "'aarch64' feature cannot be disabled "
"unless KVM is enabled and 32-bit EL1 "
"is supported");
return;
}
unset_feature(&cpu->env, ARM_FEATURE_AARCH64);
} else {
set_feature(&cpu->env, ARM_FEATURE_AARCH64);
}
}
static void aarch64_cpu_finalizefn(Object *obj)
{
}
static gchar *aarch64_gdb_arch_name(CPUState *cs)
{
return g_strdup("aarch64");
}
static void aarch64_cpu_class_init(ObjectClass *oc, void *data)
{
CPUClass *cc = CPU_CLASS(oc);
cc->gdb_read_register = aarch64_cpu_gdb_read_register;
cc->gdb_write_register = aarch64_cpu_gdb_write_register;
cc->gdb_num_core_regs = 34;
cc->gdb_core_xml_file = "aarch64-core.xml";
cc->gdb_arch_name = aarch64_gdb_arch_name;
object_class_property_add_bool(oc, "aarch64", aarch64_cpu_get_aarch64,
aarch64_cpu_set_aarch64);
object_class_property_set_description(oc, "aarch64",
"Set on/off to enable/disable aarch64 "
"execution state ");
}
static void aarch64_cpu_instance_init(Object *obj)
{
ARMCPUClass *acc = ARM_CPU_GET_CLASS(obj);
acc->info->initfn(obj);
arm_cpu_post_init(obj);
}
static void cpu_register_class_init(ObjectClass *oc, void *data)
{
ARMCPUClass *acc = ARM_CPU_CLASS(oc);
acc->info = data;
}
void aarch64_cpu_register(const ARMCPUInfo *info)
{
TypeInfo type_info = {
.parent = TYPE_AARCH64_CPU,
.instance_size = sizeof(ARMCPU),
.instance_init = aarch64_cpu_instance_init,
.class_size = sizeof(ARMCPUClass),
.class_init = info->class_init ?: cpu_register_class_init,
.class_data = (void *)info,
};
type_info.name = g_strdup_printf("%s-" TYPE_ARM_CPU, info->name);
type_register(&type_info);
g_free((void *)type_info.name);
}
static const TypeInfo aarch64_cpu_type_info = {
.name = TYPE_AARCH64_CPU,
.parent = TYPE_ARM_CPU,
.instance_size = sizeof(ARMCPU),
.instance_finalize = aarch64_cpu_finalizefn,
.abstract = true,
.class_size = sizeof(AArch64CPUClass),
.class_init = aarch64_cpu_class_init,
};
static void aarch64_cpu_register_types(void)
{
size_t i;
type_register_static(&aarch64_cpu_type_info);
for (i = 0; i < ARRAY_SIZE(aarch64_cpus); ++i) {
aarch64_cpu_register(&aarch64_cpus[i]);
}
}
type_init(aarch64_cpu_register_types)
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