[OpenBIOS] [RFC] Make BootX from Mac OS X 10.4 work

[Igor Kovalenko]

On Thu, Jul 30, 2009 at 8:00 PM, Alexander Graf<agraf at suse.de> wrote:
> Using this patch stacked on Steven Noonan's I was able to make BootX from
> Mac OS X 10.4 load XNU successfully in qemu-system-ppc.
>
> Unfortunately, most of this patch is nothing but a mere hack to find out
> what we really need to get this working.
>
> Also I didn't manage to get anything but 10.4 running. Other versions broke
> in the partition table interpretation.
>
> I would not feel good taking the patch as is, because it would be better to
> implement the correct Forth magic to make the real callbacks work. Here is
> what I found to be broken:
>
>  - unselect-dev is missing
>  - local variables don't work ({ ... })
>  - I ran into an endless loop, getting isi and dsi faults on the same 2
>    addresses all the time
>
> Also, Qemu's only usable Desktop PPC target is a G3 Beige which is only
> supported up to 10.2.8 IIRC. So even getting the bootloader running for
> 10.4 didn't exactly buy me much.
>

While working on sparc64 ofmem patch I used ppc/qemu ofmem
implementation as reference. What I noticed is there are several
corner cases not handled by range lists code; I fixed several ones
for sparc64.

Hope we can work out good common ofmem base soon.

-- 
Kind regards,
Igor V. Kovalenko