diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2020-06-25 20:31:02 -0700 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2020-06-26 14:31:12 +0100 |
| commit | 8ddb300bf60a5f3d358dd6fbf81174f6c03c1d9f (patch) | |
| tree | 6605f5606d77387ed8a2fd24439488418d0f9f59 /target/arm | |
| parent | f00faf130d5dcf64b04f71a95f14745845ca1014 (diff) | |
target/arm: Add support for MTE to HCR_EL2 and SCR_EL3
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200626033144.790098-5-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target/arm')
| -rw-r--r-- | target/arm/helper.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c index 8a0fb01581..d6c326b58e 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -2021,6 +2021,9 @@ static void scr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) if (cpu_isar_feature(aa64_pauth, cpu)) { valid_mask |= SCR_API | SCR_APK; } + if (cpu_isar_feature(aa64_mte, cpu)) { + valid_mask |= SCR_ATA; + } } else { valid_mask &= ~(SCR_RW | SCR_ST); } @@ -5248,17 +5251,22 @@ static void do_hcr_write(CPUARMState *env, uint64_t value, uint64_t valid_mask) if (cpu_isar_feature(aa64_pauth, cpu)) { valid_mask |= HCR_API | HCR_APK; } + if (cpu_isar_feature(aa64_mte, cpu)) { + valid_mask |= HCR_ATA | HCR_DCT | HCR_TID5; + } } /* Clear RES0 bits. */ value &= valid_mask; - /* These bits change the MMU setup: + /* + * These bits change the MMU setup: * HCR_VM enables stage 2 translation * HCR_PTW forbids certain page-table setups - * HCR_DC Disables stage1 and enables stage2 translation + * HCR_DC disables stage1 and enables stage2 translation + * HCR_DCT enables tagging on (disabled) stage1 translation */ - if ((env->cp15.hcr_el2 ^ value) & (HCR_VM | HCR_PTW | HCR_DC)) { + if ((env->cp15.hcr_el2 ^ value) & (HCR_VM | HCR_PTW | HCR_DC | HCR_DCT)) { tlb_flush(CPU(cpu)); } env->cp15.hcr_el2 = value; |