On Sun, Apr 19, 2009 at 1:03 AM, Andreas Färber andreas.faerber@web.de wrote:
Am 19.04.2009 um 09:50 schrieb Steven Noonan:
On Tue, Apr 14, 2009 at 10:46 PM, Steven Noonan steven@uplinklabs.net wrote:
On Sun, Apr 12, 2009 at 1:39 AM, Laurent Vivier Laurent@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...
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/4722c8a01d186a08183de49759dc8b7b74cf...
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.
I was originally hacking PearPC into working order, and was going to optimize it, but PearPC's code base is an absolute mess. It contains a ridiculous number of horrible hacks, a very disorganized tree, and it's slower than glacial movement. I eventually decided it made more sense to get QEMU working instead. I did notice that the pre-OpenBIOS version of QEMU was able to boot Mac OS X via Open Hack'Ware, so I was annoyed to find that OpenBIOS didn't have such support. So, I might as well add it.