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PPC: Newworld: Add uninorth token register

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Mac OS X expects the uninorth control register set to contain one
register that always reads back what it writes in. Expose that.

This is just a temporary hack. Eventually, we want to expose the
uninorth (/uni-n in device tree) as a separate QOM device.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2013-06-25 03:39:21 +02:00
parent a1014f25ef
commit 4e46dcdbd3
1 changed files with 11 additions and 2 deletions
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13
hw/ppc/mac_newworld.c
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@ -87,6 +87,9 @@ static void unin_write(void *opaque, hwaddr addr, uint64_t value,
unsigned size)
{
UNIN_DPRINTF("write addr " TARGET_FMT_plx " val %"PRIx64"\n", addr, value);
if (addr == 0x0) {
*(int*)opaque = value;
}
}
static uint64_t unin_read(void *opaque, hwaddr addr, unsigned size)
@ -94,6 +97,11 @@ static uint64_t unin_read(void *opaque, hwaddr addr, unsigned size)
uint32_t value;
value = 0;
switch (addr) {
case 0:
value = *(int*)opaque;
}
UNIN_DPRINTF("readl addr " TARGET_FMT_plx " val %x\n", addr, value);
return value;
@ -162,6 +170,7 @@ static void ppc_core99_init(QEMUMachineInitArgs *args)
int machine_arch;
SysBusDevice *s;
DeviceState *dev;
int *token = g_new(int, 1);
linux_boot = (kernel_filename != NULL);
@ -279,8 +288,8 @@ static void ppc_core99_init(QEMUMachineInitArgs *args)
/* Register 8 MB of ISA IO space */
isa_mmio_init(0xf2000000, 0x00800000);
/* UniN init */
memory_region_init_io(unin_memory, &unin_ops, NULL, "unin", 0x1000);
/* UniN init: XXX should be a real device */
memory_region_init_io(unin_memory, &unin_ops, token, "unin", 0x1000);
memory_region_add_subregion(get_system_memory(), 0xf8000000, unin_memory);
openpic_irqs = g_malloc0(smp_cpus * sizeof(qemu_irq *));