diff options
| author | Rob Herring <rob.herring@linaro.org> | 2014-10-24 12:19:12 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-10-24 12:19:12 +0100 |
| commit | 543486db353b53f3601d0b5abf652ab330261107 (patch) | |
| tree | 30ef6d4a8a7cd77c3e4d6cbf86f8c07bba3b4ad9 /target-arm | |
| parent | 635117e71fc697824e82cc694ba4e44dda7a9216 (diff) | |
| download | qemu-543486db353b53f3601d0b5abf652ab330261107.zip | |
target-arm: add powered off cpu state
Add tracking of cpu power state in order to support powering off of
cores in system emuluation. The initial state is determined by the
start-powered-off QOM property.
Signed-off-by: Rob Herring <rob.herring@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1412865028-17725-2-git-send-email-peter.maydell@linaro.org
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/cpu-qom.h | 2 | ||||
| -rw-r--r-- | target-arm/cpu.c | 8 | ||||
| -rw-r--r-- | target-arm/machine.c | 5 |
3 files changed, 12 insertions, 3 deletions
diff --git a/target-arm/cpu-qom.h b/target-arm/cpu-qom.h index 96a3da9a8f..aeb7e1d3a7 100644 --- a/target-arm/cpu-qom.h +++ b/target-arm/cpu-qom.h @@ -98,6 +98,8 @@ typedef struct ARMCPU { /* Should CPU start in PSCI powered-off state? */ bool start_powered_off; + /* CPU currently in PSCI powered-off state */ + bool powered_off; /* [QEMU_]KVM_ARM_TARGET_* constant for this CPU, or * QEMU_KVM_ARM_TARGET_NONE if the kernel doesn't support this CPU type. diff --git a/target-arm/cpu.c b/target-arm/cpu.c index edfd5868b8..67cd176377 100644 --- a/target-arm/cpu.c +++ b/target-arm/cpu.c @@ -40,7 +40,10 @@ static void arm_cpu_set_pc(CPUState *cs, vaddr value) static bool arm_cpu_has_work(CPUState *cs) { - return cs->interrupt_request & + ARMCPU *cpu = ARM_CPU(cs); + + return !cpu->powered_off + && cs->interrupt_request & (CPU_INTERRUPT_FIQ | CPU_INTERRUPT_HARD | CPU_INTERRUPT_VFIQ | CPU_INTERRUPT_VIRQ | CPU_INTERRUPT_EXITTB); @@ -93,6 +96,9 @@ static void arm_cpu_reset(CPUState *s) env->vfp.xregs[ARM_VFP_MVFR1] = cpu->mvfr1; env->vfp.xregs[ARM_VFP_MVFR2] = cpu->mvfr2; + cpu->powered_off = cpu->start_powered_off; + s->halted = cpu->start_powered_off; + if (arm_feature(env, ARM_FEATURE_IWMMXT)) { env->iwmmxt.cregs[ARM_IWMMXT_wCID] = 0x69051000 | 'Q'; } diff --git a/target-arm/machine.c b/target-arm/machine.c index ddb7d05c28..5776ee011d 100644 --- a/target-arm/machine.c +++ b/target-arm/machine.c @@ -222,8 +222,8 @@ static int cpu_post_load(void *opaque, int version_id) const VMStateDescription vmstate_arm_cpu = { .name = "cpu", - .version_id = 20, - .minimum_version_id = 20, + .version_id = 21, + .minimum_version_id = 21, .pre_save = cpu_pre_save, .post_load = cpu_post_load, .fields = (VMStateField[]) { @@ -263,6 +263,7 @@ const VMStateDescription vmstate_arm_cpu = { VMSTATE_UINT64(env.exception.vaddress, ARMCPU), VMSTATE_TIMER(gt_timer[GTIMER_PHYS], ARMCPU), VMSTATE_TIMER(gt_timer[GTIMER_VIRT], ARMCPU), + VMSTATE_BOOL(powered_off, ARMCPU), VMSTATE_END_OF_LIST() }, .subsections = (VMStateSubsection[]) { |