Subject: Re: Linux 3.0 boot failure on the Powerbook G4

From: Benjamin Herrenschmidt <[email-masked]>
Date: Sun, 24 Jul 2011 22:07:30 +1000

On Sat, 2011-07-23 at 22:20 +0200, Michael Büsch wrote:
> Linux 3.0 fails to boot _very_ early on my Powerbook G4. See the
> yaboot/OF screenshot:
> http://bues.ch/misc/linux-3.0-pbook.jpg
> 
> Linux 2.6.39.2 boots fine.
> Does somebody have an idea?

Interesting, that's before it even kills OF. Are you booting a zImage or
a vmlinux ?

It might be also useful to compile yaboot with debug output enabled to
figure out where the kernel is loaded so we can try calculating where
exactly it dies if it's a vmlinux...

Cheers,
Ben.

> The config can be found here:
> http://bues.ch/misc/linux-3.0-ppc-config
> It's mostly equivalent to the working 2.6.39 config. I enabled
> early OF console, but that didn't help to show better error messages.
> 
> The machine is a:
> 
> cpu             : 7447A, altivec supported
> clock           : 1499.999000MHz
> revision        : 1.2 (pvr 8003 0102)
> platform        : PowerMac
> motherboard     : PowerBook5,6 MacRISC3 Power Macintosh 
> detected as     : 287 (PowerBook G4 15")
> pmac-generation : NewWorld
>