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PPC: Add timer handler for newworld mac-io

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Mac OS X accesses fancy timer registers inside of the mac-io on bootup.

These really should be ticking at the mac-io bus frequency, but I don't
see anyone upset when we just make them as fast as we want to.

With this patch on top of my previous patch queue and latest OpenBIOS
I am able to boot Mac OS X 10.4 with -M mac99.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2013-06-30 05:15:14 +02:00
parent 80fc95d8bd
commit a0f9fdfd98
1 changed files with 33 additions and 0 deletions
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33
hw/misc/macio/macio.c
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@ -234,11 +234,39 @@ static void macio_oldworld_init(Object *obj)
} }
} }
static void timer_write(void *opaque, hwaddr addr, uint64_t value,
unsigned size)
{
}
static uint64_t timer_read(void *opaque, hwaddr addr, unsigned size)
{
uint32_t value = 0;
switch (addr) {
case 0x38:
value = qemu_get_clock_ns(vm_clock);
break;
case 0x3c:
value = qemu_get_clock_ns(vm_clock) >> 32;
break;
}
return value;
}
static const MemoryRegionOps timer_ops = {
.read = timer_read,
.write = timer_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
static int macio_newworld_initfn(PCIDevice *d) static int macio_newworld_initfn(PCIDevice *d)
{ {
MacIOState *s = MACIO(d); MacIOState *s = MACIO(d);
NewWorldMacIOState *ns = NEWWORLD_MACIO(d); NewWorldMacIOState *ns = NEWWORLD_MACIO(d);
SysBusDevice *sysbus_dev; SysBusDevice *sysbus_dev;
MemoryRegion *timer_memory = g_new(MemoryRegion, 1);
int i; int i;
int cur_irq = 0; int cur_irq = 0;
int ret = macio_common_initfn(d); int ret = macio_common_initfn(d);
@ -265,6 +293,11 @@ static int macio_newworld_initfn(PCIDevice *d)
} }
} }
/* Timer */
memory_region_init_io(timer_memory, OBJECT(s), &timer_ops, NULL, "timer",
0x1000);
memory_region_add_subregion(&s->bar, 0x15000, timer_memory);
return 0; return 0;
} }