diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2012-07-12 10:59:05 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2012-07-12 10:59:54 +0000 |
| commit | de9b05b807918d40db9e26ddd6a54ad2978ac5b7 (patch) | |
| tree | c9518ecd83f855a85dc9ae6099ca0ffa65379512 /target-arm/cpu.c | |
| parent | 3cc0cd61f4adfecf2c0de392fe61a7e323e496ba (diff) | |
target-arm: Implement privileged-execute-never (PXN)
Implement the privileged-execute-never (PXN) translation table bit.
It is implementation-defined whether this is implemented, so we give
it its own ARM_FEATURE_ flag. LPAE requires PXN, so add also an
LPAE feature flag and the implication logic, as a placeholder
for actually implementing LPAE at a later date.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-arm/cpu.c')
| -rw-r--r-- | target-arm/cpu.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/target-arm/cpu.c b/target-arm/cpu.c index ae5795337f..526e7254f2 100644 --- a/target-arm/cpu.c +++ b/target-arm/cpu.c @@ -192,6 +192,9 @@ void arm_cpu_realize(ARMCPU *cpu) if (arm_feature(env, ARM_FEATURE_VFP3)) { set_feature(env, ARM_FEATURE_VFP); } + if (arm_feature(env, ARM_FEATURE_LPAE)) { + set_feature(env, ARM_FEATURE_PXN); + } register_cp_regs_for_features(cpu); } @@ -532,6 +535,7 @@ static void cortex_a15_initfn(Object *obj) set_feature(&cpu->env, ARM_FEATURE_V7MP); set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER); set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS); + set_feature(&cpu->env, ARM_FEATURE_LPAE); cpu->midr = 0x412fc0f1; cpu->reset_fpsid = 0x410430f0; cpu->mvfr0 = 0x10110222; |