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hw/arm_gic: Make gic_reset a sysbus reset function 

Make gic_reset a sysbus reset function, so we actually
reset the GIC on system reset rather than only at init.
For the NVIC this requires us also to implement reset
of the SysTick.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2012-04-13 11:39:09 +00:00
parent 2e9dfe20a6
commit aecff6924d
2 changed files with 19 additions and 2 deletions
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5
hw/arm_gic.c
View File

@ -741,8 +741,9 @@ static const MemoryRegionOps gic_cpu_ops = {
};
#endif
static void gic_reset(gic_state *s)
static void gic_reset(DeviceState *dev)
{
gic_state *s = FROM_SYSBUS(gic_state, sysbus_from_qdev(dev));
int i;
memset(s->irq_state, 0, GIC_MAXIRQ * sizeof(gic_irq_state));
for (i = 0 ; i < NUM_CPU(s); i++) {
@ -905,7 +906,6 @@ static void gic_init(gic_state *s, int num_irq)
}
#endif
gic_reset(s);
register_savevm(NULL, "arm_gic", -1, 2, gic_save, gic_load, s);
}
@ -938,6 +938,7 @@ static void arm_gic_class_init(ObjectClass *klass, void *data)
SysBusDeviceClass *sbc = SYS_BUS_DEVICE_CLASS(klass);
sbc->init = arm_gic_init;
dc->props = arm_gic_properties;
dc->reset = gic_reset;
dc->no_user = 1;
}

16
hw/armv7m_nvic.c
View File

@ -76,6 +76,14 @@ static void systick_timer_tick(void * opaque)
}
}
static void systick_reset(nvic_state *s)
{
s->systick.control = 0;
s->systick.reload = 0;
s->systick.tick = 0;
qemu_del_timer(s->systick.timer);
}
/* The external routines use the hardware vector numbering, ie. the first
IRQ is #16. The internal GIC routines use #32 as the first IRQ. */
void armv7m_nvic_set_pending(void *opaque, int irq)
@ -371,6 +379,13 @@ static const VMStateDescription vmstate_nvic = {
}
};
static void armv7m_nvic_reset(DeviceState *dev)
{
nvic_state *s = FROM_SYSBUSGIC(nvic_state, sysbus_from_qdev(dev));
gic_reset(&s->gic.busdev.qdev);
systick_reset(s);
}
static int armv7m_nvic_init(SysBusDevice *dev)
{
nvic_state *s= FROM_SYSBUSGIC(nvic_state, dev);
@ -400,6 +415,7 @@ static void armv7m_nvic_class_init(ObjectClass *klass, void *data)
sdc->init = armv7m_nvic_init;
dc->vmsd = &vmstate_nvic;
dc->reset = armv7m_nvic_reset;
dc->props = armv7m_nvic_properties;
}