diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2011-07-20 10:32:55 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2011-07-26 14:58:43 +0000 |
| commit | e961d129e1712b64e561ea16fe124933115ee477 (patch) | |
| tree | e75b8a66d63f996bb11180f7d2f8577ef66bb1f3 | |
| parent | b8095f24f24e50a7d4be33d8a79474aff3324295 (diff) | |
target-arm: Mark 1136r1 as a v6K core
The 1136r1 is actually a v6K core (unlike the 1136r0); mark it as such,
thus enabling the TLS registers, NOP hints, CLREX, half and byte wide
exclusive load/stores, etc.
The VA-to-PA translation registers are not present on 1136r1, so
introduce a new feature flag for them, which is enabled on
11MPCore and all v7 cores.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| -rw-r--r-- | target-arm/cpu.h | 1 | ||||
| -rw-r--r-- | target-arm/helper.c | 21 |
2 files changed, 20 insertions, 2 deletions
diff --git a/target-arm/cpu.h b/target-arm/cpu.h index adef42785c..1974d82ff9 100644 --- a/target-arm/cpu.h +++ b/target-arm/cpu.h @@ -374,6 +374,7 @@ enum arm_features { ARM_FEATURE_V4T, ARM_FEATURE_V5, ARM_FEATURE_STRONGARM, + ARM_FEATURE_VAPA, /* cp15 VA to PA lookups */ }; static inline int arm_feature(CPUARMState *env, int feature) diff --git a/target-arm/helper.c b/target-arm/helper.c index ae4f334e40..5b0b4921a4 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -70,13 +70,24 @@ static void cpu_reset_model_id(CPUARMState *env, uint32_t id) env->cp15.c0_cachetype = 0x1dd20d2; env->cp15.c1_sys = 0x00090078; break; - case ARM_CPUID_ARM1136_R2: case ARM_CPUID_ARM1136: + /* This is the 1136 r1, which is a v6K core */ + set_feature(env, ARM_FEATURE_V6K); + /* Fall through */ + case ARM_CPUID_ARM1136_R2: + /* What qemu calls "arm1136_r2" is actually the 1136 r0p2, ie an + * older core than plain "arm1136". In particular this does not + * have the v6K features. + */ set_feature(env, ARM_FEATURE_V4T); set_feature(env, ARM_FEATURE_V5); set_feature(env, ARM_FEATURE_V6); set_feature(env, ARM_FEATURE_VFP); set_feature(env, ARM_FEATURE_AUXCR); + /* These ID register values are correct for 1136 but may be wrong + * for 1136_r2 (in particular r0p2 does not actually implement most + * of the ID registers). + */ env->vfp.xregs[ARM_VFP_FPSID] = 0x410120b4; env->vfp.xregs[ARM_VFP_MVFR0] = 0x11111111; env->vfp.xregs[ARM_VFP_MVFR1] = 0x00000000; @@ -92,6 +103,7 @@ static void cpu_reset_model_id(CPUARMState *env, uint32_t id) set_feature(env, ARM_FEATURE_V6K); set_feature(env, ARM_FEATURE_VFP); set_feature(env, ARM_FEATURE_AUXCR); + set_feature(env, ARM_FEATURE_VAPA); env->vfp.xregs[ARM_VFP_FPSID] = 0x410120b4; env->vfp.xregs[ARM_VFP_MVFR0] = 0x11111111; env->vfp.xregs[ARM_VFP_MVFR1] = 0x00000000; @@ -222,6 +234,11 @@ static void cpu_reset_model_id(CPUARMState *env, uint32_t id) cpu_abort(env, "Bad CPU ID: %x\n", id); break; } + + /* Some features automatically imply others: */ + if (arm_feature(env, ARM_FEATURE_V7)) { + set_feature(env, ARM_FEATURE_VAPA); + } } void cpu_reset(CPUARMState *env) @@ -1502,7 +1519,7 @@ void HELPER(set_cp15)(CPUState *env, uint32_t insn, uint32_t val) goto bad_reg; } /* No cache, so nothing to do except VA->PA translations. */ - if (arm_feature(env, ARM_FEATURE_V6K)) { + if (arm_feature(env, ARM_FEATURE_VAPA)) { switch (crm) { case 4: if (arm_feature(env, ARM_FEATURE_V7)) { |