Bugzilla Bug 45285

In a nutshell, IBM RS/6000 and pSeries hardware is not supported on the live
cd. (iSeries isnt supported directly either and yes we should fix that too but
that'll go into a different bug)

This is thankfully fairly easy to fix so, what the heck, why not do it?

Reproducible: Always
Steps to Reproduce:
Here's how to print in support.

1) on the livecd create a ppc and etc directory
2) into the etc directory place the yaboot.conf with chrp kernel references
Make SURE you reference the cdrom as cdrom:  and not cd: !!
3) place the "chrp" version of yaboot in the "root" of the cd. The chrp version
of yaboot is one where the binary has had addnote run on top of it. Note the
chrp yaboot and the "normal" pmac yaboot are mutually exclusive. One is for
pmac hardware, the other for chrp.
(look for another bug on this ... I'm going to "fix" this problem as we only
build the one yaboot binary and we shouldn't)
4) In the ppc directory place the following script, name it bootinfo.txt
-------8<----------8<---------
<chrp-boot>
<description>Gentoo PPC 2004.0</description>
<os-name>Gentoo PPC 2004.0</os-name>
<boot-script>boot &device;:1,yaboot </boot-script>
</chrp-boot>
----8<-------8<-----8<------
5) make a chrp kernel, given the yaboot.conf in /etc you can place the kernels
in /boot like the pmac kernels. 
There are really 3 32 bit chrp kernels that can be built
1) chrp (uni for boxes such as the rs/6000 43p 150) 
arch/ppc/configs/ibmchrp_defconfig
2) chrp-smp (smp boxes such as the rs/6000 43p F50) same as ibmpchrp_defconfig
but with smp on 
3) Power3-smp (Power3 based boxes such as the 43p 260, 44p 270, p640 etc) (This
32 bit kernel is ONLY good for boxes with 3 gig or less of memory) 
arch/ppc/configs/power3_defconfig

This "should" work, tho I have a sinking feeling there's an el torito 512 byte
bootblock of some sort needed.   Tho from the OF command line:

boot cdrom:,\ppc\bootinfo.txt *should* work or event
boot cdrom:,yaboot

Anyway, that's the magic!

I think we can easily support this. I am a bit concerned about the directories
and the naming thing. Is there a possibility to reuse the /boot directory on
the cd, but give various binaries for chrp an extra .chrp extension (or prefix,
whatever, maybe we can make some sort of cascading boot thing: 

/boot/chrp/whateverisneeded
/boot/apple/newworld/
/boot/apple/oldworld/ 
/boot/pegasos/)?

Hoping to have this in 2004.3

tgall, could you test the 2004.3 CD?  Pieter and I can show you, where to find
the release-CDs.  Just ping on IRC.

Does 2004.3 work on RS/6000?

I guess, 2005.0 does not work on RS/6000 either, as the included yaboot is not
the correctly compiled for that type of machine.  I leave that bug open, so
that we could look into it later (probably for 2005.1).  I hope to get some
input from dostrow about the RS/6000 support.

Mark Dokter wrote a good document about installing Gentoo on a 7043-140.  I'll
use it as a resource for the 2005.1 building.  See the document in URL.

Tom,

still want to keep this open?