PPC64 boot failure with 2.6.15

[Patrick Finnegan]

After succeeding to get 2.4.26 working on my machine (an IBM 9076-N81 
high node), I'm trying to get 2.6 to work on it.  So far, the kernel 
fails to boot, and the machine resets partway through bootup.  I've 
tried compiling both an SMP and UP 2.6.15.1 kernel (unmodified 
kernel.org sources).

I'm compiling the kernels with gcc-4.0, on a dual-G5 running a ppc64 
kernel, v2.6.11.7:
gcc-4.0 (GCC) 4.0.3 20060115 (prerelease) (Debian 4.0.2-7)
Linux excalibur 2.6.11.7 #1 SMP Mon Apr 18 21:31:43 EST 2005 ppc64 
GNU/Linux


Bootup messages for 2.6.15.1-up:
http://computer-refuge.org/bh-debian/2.6/boot-2.6.15.1-up-fail.txt
Bootup messages for 2.6.15.1-smp:
http://computer-refuge.org/bh-debian/2.6/boot-2.6.15.1-smp-fail.txt
Config for 2.6.15.1-smp:
http://computer-refuge.org/bh-debian/2.6/config-2.6.15.1-smp

For reference, here's the working config I used for 2.4.26 (SMP):
http://computer-refuge.org/bh-debian/2.6/config-2.4.26-installer
and boot log.... 
http://computer-refuge.org/bh-debian/bh-boot-2.4.26.txt

Anyone have any hints?

Pat
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