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| author | Peter Maydell <peter.maydell@linaro.org> | 2017-01-20 11:15:10 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2017-01-20 11:15:10 +0000 |
| commit | c25bd18a04c8bd0f19556d719864b7b08528222d (patch) | |
| tree | de0d79f47a6c941150bdb2a993af2521a0b49523 /target/arm/cpu.c | |
| parent | 3f591a20221511c639cc7959755e570801a21cd2 (diff) | |
| download | qemu-c25bd18a04c8bd0f19556d719864b7b08528222d.zip qemu-c25bd18a04c8bd0f19556d719864b7b08528222d.tar.gz qemu-c25bd18a04c8bd0f19556d719864b7b08528222d.tar.bz2 | |
target-arm: Enable EL2 feature bit on A53 and A57
Enable the ARM_FEATURE_EL2 bit on Cortex-A52 and
Cortex-A57, since this is all now sufficiently implemented
to work with the GICv3. We provide the usual CPU property
to disable it for backwards compatibility with the older
virt boards.
In this commit, we disable the EL2 feature on the
virt and ZynpMP boards, so there is no overall effect.
Another commit will expose a board-level property to
allow the user to enable EL2.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 1483977924-14522-18-git-send-email-peter.maydell@linaro.org
Diffstat (limited to 'target/arm/cpu.c')
| -rw-r--r-- | target/arm/cpu.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 93ebbc9..3f2cdb6 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -496,6 +496,9 @@ static Property arm_cpu_reset_hivecs_property = static Property arm_cpu_rvbar_property = DEFINE_PROP_UINT64("rvbar", ARMCPU, rvbar, 0); +static Property arm_cpu_has_el2_property = + DEFINE_PROP_BOOL("has_el2", ARMCPU, has_el2, true); + static Property arm_cpu_has_el3_property = DEFINE_PROP_BOOL("has_el3", ARMCPU, has_el3, true); @@ -546,6 +549,11 @@ static void arm_cpu_post_init(Object *obj) #endif } + if (arm_feature(&cpu->env, ARM_FEATURE_EL2)) { + qdev_property_add_static(DEVICE(obj), &arm_cpu_has_el2_property, + &error_abort); + } + if (arm_feature(&cpu->env, ARM_FEATURE_PMU)) { qdev_property_add_static(DEVICE(obj), &arm_cpu_has_pmu_property, &error_abort); @@ -694,6 +702,10 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp) cpu->id_aa64pfr0 &= ~0xf000; } + if (!cpu->has_el2) { + unset_feature(env, ARM_FEATURE_EL2); + } + if (!cpu->has_pmu || !kvm_enabled()) { cpu->has_pmu = false; unset_feature(env, ARM_FEATURE_PMU); |