[Qemu-devel] Re: [OpenBIOS] QEMU OpenBIOS booting?

[Andreas Färber]

Am 19.04.2009 um 10:28 schrieb Steven Noonan:

> On Sun, Apr 19, 2009 at 1:03 AM, Andreas Färber <address@hidden 
> > wrote:
> > Am 19.04.2009 um 09:50 schrieb Steven Noonan:
> >
> > > On Tue, Apr 14, 2009 at 10:46 PM, Steven Noonan <address@hidden 
> > > >
> > > wrote:
> > > > On Sun, Apr 12, 2009 at 1:39 AM, Laurent Vivier <address@hidden 
> > > > >
> > > > 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...
> > >
> > > 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.
> > >
> > > Any chances I could get these changes merged to the main OpenBIOS  
> > > tree
> > > once they're done?
> > >
> > > My current working repository is at http://github.com/tycho/ 
> > > openbios.
> > > I'm working on the macosx-boot branch. The relevant commit is here
> > > (patch also attached):
> > >
> > > http://github.com/tycho/openbios/commit/4722c8a01d186a08183de49759dc8b7b74cf41c9
> > >
> > > Thoughts?
> >
> > Your work surely sounds interesting. However, making OpenBIOS boot  
> > from the
> > disks is not everything there is to it. Alexander Graf had once  
> > posted a
> > series of patches for making Mac OS X boot in QEMU, including
> > changes/additions to device emulation. They were not merged, not  
> > sure about
> > the status today.
> >
> > One issue iirc was that you need to obtain some Apple ID from a  
> > real Mac of
> > yours and pass that to QEMU for it to work.
>
> Ah, thanks for that tip. I was completely oblivious to his work. But
> from the looks of it, his work is x86-oriented. My intent was to get
> the PowerPC version of Mac OS X running, which will probably be a bit
> easier, particularly since QEMU already emulates the appropriate
> hardware (g3bw, mac99). It's just a matter of getting OpenBIOS to boot
> it, I think.

Wasn't there a recent revert from g3bw to g3beige machine emulation  
due to not fully supported devices?
Might raise some issues with Leopard, Tiger may work better.

Andreas