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target-arm: Add VTTBR_EL2

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Backports commit b698e9cfd282b228b36d426b75facb83e07a1072 from qemu
This commit is contained in:
Edgar E. Iglesias 2018-02-15 12:32:42 -05:00 committed by Lioncash
parent 4bdafaa2f8
commit 097325acd6
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GPG key ID: 4E3C3CC1031BA9C7
2 changed files with 27 additions and 2 deletions
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1
qemu/target-arm/cpu.h
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@ -226,6 +226,7 @@ typedef struct CPUARMState {
};
uint64_t ttbr1_el[4];
};
uint64_t vttbr_el2; /* Virtualization Translation Table Base. */
/* MMU translation table base control. */
TCR tcr_el[4];
TCR vtcr_el2; /* Virtualization Translation Control. */

28
qemu/target-arm/helper.c
View file

@ -1940,6 +1940,20 @@ static void vmsa_ttbr_write(CPUARMState *env, const ARMCPRegInfo *ri,
raw_write(env, ri, value);
}
static void vttbr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
ARMCPU *cpu = arm_env_get_cpu(env);
CPUState *cs = CPU(cpu);
/* Accesses to VTTBR may change the VMID so we must flush the TLB. */
if (raw_read(env, ri) != value) {
tlb_flush_by_mmuidx(cs, ARMMMUIdx_S12NSE1, ARMMMUIdx_S12NSE0,
ARMMMUIdx_S2NS, -1);
raw_write(env, ri, value);
}
}
static const ARMCPRegInfo vmsa_pmsa_cp_reginfo[] = {
{ "DFSR", 15,5,0, 0,0,0, 0,
ARM_CP_ALIAS, PL1_RW, 0, NULL, 0, 0,
@ -2781,6 +2795,11 @@ static const ARMCPRegInfo el3_no_el2_cp_reginfo[] = {
{ "VTCR_EL2", 0,2,1, 3,4,2, ARM_CP_STATE_BOTH, ARM_CP_CONST,
PL2_RW, 0, NULL, 0, 0, {0, 0},
access_el3_aa32ns_aa64any },
{ "VTTBR", 15,0,2, 0,6,0, ARM_CP_STATE_AA32, ARM_CP_CONST | ARM_CP_64BIT,
PL2_RW, 0, NULL, 0, 0, {0, 0},
access_el3_aa32ns },
{ "VTTBR_EL2", 0,2,1, 3,4,0, ARM_CP_STATE_AA64, ARM_CP_CONST,
PL2_RW, 0, NULL, 0 },
{ "SCTLR_EL2", 0,1,0, 3,4,0, ARM_CP_STATE_BOTH, ARM_CP_CONST,
PL2_RW, 0, NULL, 0 },
{ "TPIDR_EL2", 0,13,0, 3,4,2, ARM_CP_STATE_BOTH, ARM_CP_CONST,
@ -2877,6 +2896,12 @@ static const ARMCPRegInfo el2_cp_reginfo[] = {
access_el3_aa32ns },
{ "VTCR_EL2", 0,2,1, 3,4,2, ARM_CP_STATE_AA64, ARM_CP_ALIAS,
PL2_RW, 0, NULL, 0, offsetof(CPUARMState, cp15.vtcr_el2) },
{ "VTTBR", 15,0,2, 0,6,0, ARM_CP_STATE_AA32, ARM_CP_64BIT | ARM_CP_ALIAS,
PL2_RW, 0, NULL, 0, offsetof(CPUARMState, cp15.vttbr_el2), {0, 0},
access_el3_aa32ns, NULL, vttbr_write },
{ "VTTBR_EL2", 0,2,1, 3,4,0, ARM_CP_STATE_AA64, 0,
PL2_RW, 0, NULL, 0, offsetof(CPUARMState, cp15.vttbr_el2), {0, 0},
NULL, NULL, vttbr_write },
{ "SCTLR_EL2", 0,1,0, 3,4,0, ARM_CP_STATE_BOTH, 0,
PL2_RW, 0, NULL, 0, offsetof(CPUARMState, cp15.sctlr_el[2]), {0, 0},
NULL, NULL, sctlr_write, NULL, raw_write },
@ -5169,8 +5194,7 @@ static inline uint64_t regime_ttbr(CPUARMState *env, ARMMMUIdx mmu_idx,
int ttbrn)
{
if (mmu_idx == ARMMMUIdx_S2NS) {
/* TODO: return VTTBR_EL2 */
g_assert_not_reached();
return env->cp15.vttbr_el2;
}
if (ttbrn == 0) {
return env->cp15.ttbr0_el[regime_el(env, mmu_idx)];