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target-arm: Implement the generic timer

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The ARMv7 architecture specifies a 'generic timer' which is implemented
via cp15 registers. Newer kernels will prefer to use this rather than
a devboard-level timer. Implement the generic timer for TCG; for KVM
we will already use the hardware's virtualized timer for this.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Message-id: 1376065080-26661-4-git-send-email-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2013-08-20 14:54:31 +01:00
parent 2452731c88
commit 55d284af8e
5 changed files with 290 additions and 8 deletions
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8
target-arm/machine.c
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@ -222,9 +222,9 @@ static int cpu_post_load(void *opaque, int version_id)
const VMStateDescription vmstate_arm_cpu = {
.name = "cpu",
.version_id = 12,
.minimum_version_id = 12,
.minimum_version_id_old = 12,
.version_id = 13,
.minimum_version_id = 13,
.minimum_version_id_old = 13,
.pre_save = cpu_pre_save,
.post_load = cpu_post_load,
.fields = (VMStateField[]) {
@ -257,6 +257,8 @@ const VMStateDescription vmstate_arm_cpu = {
VMSTATE_UINT32(env.exclusive_val, ARMCPU),
VMSTATE_UINT32(env.exclusive_high, ARMCPU),
VMSTATE_UINT64(env.features, ARMCPU),
VMSTATE_TIMER(gt_timer[GTIMER_PHYS], ARMCPU),
VMSTATE_TIMER(gt_timer[GTIMER_VIRT], ARMCPU),
VMSTATE_END_OF_LIST()
},
.subsections = (VMStateSubsection[]) {