PPC64 boot failure with 2.6.15

[Benjamin Herrenschmidt]

On Wed, 2006-01-25 at 18:21 -0500, Patrick Finnegan wrote:
> 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

I don't see why it would reset at that point.... (after the symbios
driver message). Does it sit there for a while before the reset or not ?
Do you see any other message ? (The reset itself is spewing something on
the serial port at all ?)

One possible thing I spot in your log is:

wdrtas: couldn't get token for ibm,get-system-parameter. Trying to continue with a default timeout value of 300 seconds.

What happens if you disable CONFIG_WATCHDOG_RTAS ?

Ben.