[OpenBIOS] QEMU OpenBIOS booting?

[Steven Noonan]

On Sun, Apr 19, 2009 at 1:24 AM, Laurent Vivier <Laurent at lvivier.info> wrote:
> Le dimanche 19 avril 2009 à 00:50 -0700, Steven Noonan a écrit :
>> On Tue, Apr 14, 2009 at 10:46 PM, Steven Noonan <steven at uplinklabs.net> wrote:
>> > On Sun, Apr 12, 2009 at 1:39 AM, Laurent Vivier <Laurent at lvivier.info> wrote:
>> >> OpenBIOS is not able to boot MacOS X.
>> >
>> > Well, that's a silly limitation. Is there a reason this isn't
>> > implemented? I see that the Mac-on-Linux OpenBIOS version has such
>> > support, so it seems strange that the QEMU version does not.
>>
>> I don't know if anyone here is actually interested (this list seems
>> -very- quiet), but...
>
> Hi,
>
>> I've been hacking at OpenBIOS for a bit, and I got it to properly read
>> Mac OS X discs (it kept failing because it would hit an Apple
>> Partition Map header instead of an HFS+ filesystem header). I'm
>> working on adding an XCOFF loader, too, so it should be able to boot
>> Mac OS X soon.
>
> You can copy it from OpenHackWare.
> I made some tests and it seems to have some memory conflicts between
> MacOS kernel and OpenBIOS.
>
> Good Luck.
>

Two more pre-XCOFF loader commits up:
http://github.com/tycho/openbios/commit/e43daa3447b5ce4a2b05b2f32882e49891156200
http://github.com/tycho/openbios/commit/7023b78a10f5632fd08d4749615efd3e73ab1036

And I have something (uncommitted) that at least -loads- the
CHRP-embedded XCOFF binaries now, but I am not sure what to do to
execute the result. With ELF, it seems you can just use the call_elf()
function. I don't know PowerPC assembler (nor the XCOFF format) well
enough yet to know what would be necessary for a call_xcoff()
function. Anyone want to help out with this?

- Steven