ppc32 kernel boot problem (pmu related?)

[Benjamin Herrenschmidt]

On Thu, 2006-05-11 at 15:07 -0400, Nathan Pilatzke wrote:
> Hello, I am not a member of this list and I hope this is the correct
> place to report such problems and ask for help.
> 
> I am running an eMac first generation powerpc (700MHz) and the Gentoo
> distribution.  Kernel 2.6.15 (Gentoo revision 1) is working quite well
> for me.  A few days ago I compiled 2.6.17-rc3 from the vanilla sources
> ebuild and am having troubles with the pmu code.
> 
> I can boot successfully when my config has
> # CONFIG_ADB_PMU is not set
> but cannot boot if my config has
> CONFIG_ADB_PMU=y

What happens when you enable that option ?

> I can post anything you need to help narrow down the problem (ie.
> kernel configs, boot msgs).  Would turning on the kernel debugging
> give more information on the problem?  Any help would be greatly
> appreciated... even if I can just narrow down the problem further so
> that I can make a very specific bug report.
> 
> Here is the cpuinfo (as reported under 2.6.17-rc3 without PMU):
> cat /proc/cpuinfo
> processor       : 0
> cpu             : 7450, altivec supported
> clock           : 700.000000MHz
> revision        : 0.1 (pvr 8000 0201)
> bogomips        : 49.79
> timebase        : 24913389
> platform        : PowerMac
> machine         : PowerMac4,4
> motherboard     : PowerMac4,4 MacRISC2 MacRISC Power Macintosh
> detected as     : 80 (eMac)
> pmac flags      : 00000010
> L2 cache        : 256K unified
> pmac-generation : NewWorld
> 
> Thanks.
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