Re: booting from openfirmware
On Mon, 7 Feb 2000, Benjamin Herrenschmidt wrote:
> On Mon, Feb 7, 2000, Joel Klecker <jk@espy.org> wrote:
>
> >That's not true, even the most broken versions of Apple OF understand HFS
> >filesystems on floppies at least.
>
> Hum... yes and no...
>
> OldWorld machines do have HFS support, but it's somewhat.... bogus.
> Basically, it works as long as you file is at the root of the disk, and
> is not too fragmented. The OF patches installed by Apple/Darwin
> SystemDisk tool may help here. However, only newworld machines support HFS+.
What computers does the SystemDisk tool support? I have a Biege G3 tower (the
ones that shipped just before they switched to B&W). Also will the SystemDisk
tool work to boot linux at all? I use BootX right now but I am looking into
other ways to boot Linux because I want to move to MacOS X when it comes out
and so I doubt i will beable to continue using BootX. I have tried booting
from OF but i get Claim Failed! errors. Is there a complete guide to getting
Linux booted from OF?
>
> >The issue here is that `linux' is an ELF image, which nothing pre-newworld
> >supports.
> >
> >Incidentally the `bootargs' file is probably wrong, 'video=keep' isn't
> >something I've ever seen.
>
> if you compile the kernel with
>
> make zImage
>
> Then you can grab the resulting file in arch/ppc/coffboot/vmlinux.coff
> which is a valid XCOFF image that old OFs can load. I use it to netboot a
> wallstreet powerbook when doing tests and it works just fine. Note that
> some versions of 2.2.13/2.2.14 has a bug that broke coff booting. I fixed
> this in recent kernels, so if you use my latest kernel or one compiled
> from Paul current rsync tree, it should work.
>
>
>
>
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>
----
Logan
"O God of Earth and Altar,
Bow down and hear our cry,
Our earthly rulers falter,
Our people drift and die,
The walls of gold entomb us,
The swords of scorn divide,
Take not thy thunder from us,
But take away our pride."
-G.K.Chesterton: English Hymnal
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