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[Qemu-ppc] [PATCH] PPC: Add timer handler for newworld mac-io
From: |
Alexander Graf |
Subject: |
[Qemu-ppc] [PATCH] PPC: Add timer handler for newworld mac-io |
Date: |
Sun, 30 Jun 2013 05:17:28 +0200 |
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 <address@hidden>
---
hw/misc/macio/macio.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/hw/misc/macio/macio.c b/hw/misc/macio/macio.c
index d9971e2..f6f8dcf 100644
--- a/hw/misc/macio/macio.c
+++ b/hw/misc/macio/macio.c
@@ -232,11 +232,39 @@ 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)
{
MacIOState *s = MACIO(d);
NewWorldMacIOState *ns = NEWWORLD_MACIO(d);
SysBusDevice *sysbus_dev;
+ MemoryRegion *timer_memory = g_new(MemoryRegion, 1);
int i;
int cur_irq = 0;
int ret = macio_common_initfn(d);
@@ -263,6 +291,10 @@ static int macio_newworld_initfn(PCIDevice *d)
}
}
+ /* Timer */
+ memory_region_init_io(timer_memory, &timer_ops, NULL, "timer", 0x1000);
+ memory_region_add_subregion(&s->bar, 0x15000, timer_memory);
+
return 0;
}
--
1.8.1.4
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