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hvf: arm: Implement PSCI handling

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We need to handle PSCI calls. Most of the TCG code works for us,
but we can simplify it to only handle aa64 mode and we need to
handle SUSPEND differently.

This patch takes the TCG code as template and duplicates it in HVF.

To tell the guest that we support PSCI 0.2 now, update the check in
arm_cpu_initfn() as well.

Signed-off-by: Alexander Graf <agraf@csgraf.de>
Reviewed-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20210916155404.86958-8-agraf@csgraf.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Alexander Graf 2021-09-16 17:54:01 +02:00 • committed by Peter Maydell
parent 585df85efe
commit 2c9c0bf9d1
3 changed files with 139 additions and 7 deletions
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4
target/arm/cpu.c
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@ -1113,8 +1113,8 @@ static void arm_cpu_initfn(Object *obj)
cpu->psci_version = 1; /* By default assume PSCI v0.1 */
cpu->kvm_target = QEMU_KVM_ARM_TARGET_NONE;
if (tcg_enabled()) {
cpu->psci_version = 2; /* TCG implements PSCI 0.2 */
if (tcg_enabled() || hvf_enabled()) {
cpu->psci_version = 2; /* TCG and HVF implement PSCI 0.2 */
}
}