[OpenBIOS] Macintosh device tree

Andreas Färber afaerber at suse.de
Sat Feb 16 00:30:39 CET 2013

Am 05.02.2013 15:39, schrieb Amadeusz Sławiński:
> On Mon, Feb 04, 2013 at 11:23:59PM -0500, Programmingkid wrote:
>> On Feb 3, 2013, at 9:47 PM, Programmingkid wrote:
>>> On Feb 3, 2013, at 7:17 PM, Amadeusz Sławiński wrote:
>>>> On Mon, Feb 04, 2013 at 12:24:26AM +0100, Andreas Färber wrote:
>>>>> Am 02.02.2013 22:27, schrieb Programmingkid:
>>>>>> I am investigating the device tree of the mac99 model. It looks like it is wrong. The part that I am concerned with is the via-cuda node. Both my iMac and iBook don't even have a via-cuda. They both have a via-pmu at 16000 node. I'm hoping someone has an original blue and white PowerMac G3. I would like the full device tree printout from it. The question I am trying to answer is does any newworld Mac have a via-cuda? If they don't, we know that it should be changed to a via-pmu at 16000 node.
>>>>> I have one around, and it has a via-cuda at 16000 node. There's a
>>>>> power-mgt at 0 node at the same level (under mac-io at 5) but no pmu node.
>>>> With regards to mac99 target I would rather be concerned with lack of /uni-n, as
>>>> darwin seems to check for this (it panics when checking machine type)
>> Do you think this is a QEMU or OpenBIOS issue?
> Fast grep through qemu newworld machine shows that it is at least
> partly implemented:
> % grep uni hw/ppc/mac_newworld.c
> static void unin_write(void *opaque, hwaddr addr, uint64_t value,
> static uint64_t unin_read(void *opaque, hwaddr addr, unsigned size)
> static const MemoryRegionOps unin_ops = {
>     .read = unin_read,
>     .write = unin_write,
>     MemoryRegion *unin_memory = g_new(MemoryRegion, 1);
>     memory_region_init_io(unin_memory, &unin_ops, NULL, "unin", 0x1000);
>     memory_region_add_subregion(get_system_memory(), 0xf8000000, unin_memory);

The actual implementation is in hw/unin_pci.c. ($ git grep uni-n)


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