Re: ppc32 kernel boot problem (pmu related?)

Using PowerMac machine description
Total memory = 640MB; using 2048kB for hash table (at cfe00000)
Linux version 2.6.17-rc3 (root@the_emac) (gcc version 3.4.5 (Gentoo 3.4.5-r1, ss
p-3.4.5-1.0, pie-8.7.9)) #11 Thu May 11 09:53:39 EDT 2006
Found UniNorth memory controller & host bridge @ 0xf8000000 revision: 0x11
Mapped at 0xfdfc0000
Found a Keylargo mac-io controller, rev: 3, mapped at 0xfdf40000
Processor NAP mode on idle enabled.
PowerMac motherboard: eMac
setup_arch: bootmem
Found UniNorth PCI host bridge at 0xf0000000. Firmware bus number: 0->0
Found UniNorth PCI host bridge at 0xf2000000. Firmware bus number: 0->0
Found UniNorth PCI host bridge at 0xf4000000. Firmware bus number: 0->0
via-pmu: Server Mode is disabled
PMU driver v2 initialized for Core99, firmware: 0c
arch: exit
Top of RAM: 0x28000000, Total RAM: 0x28000000
Memory hole size: 0MB
Built 1 zonelists
Kernel command line: root=/dev/sda8 ro video=ofonly root=/dev/sda8 rootdelay=10
resume=/dev/sda9
mpic: Setting up MPIC " MPIC 1   " version 1.2 at 80040000, max 4 CPUs
mpic: ISU size: 64, shift: 6, mask: 3f
mpic: Initializing for 64 sources
PID hash table entries: 4096 (order: 12, 16384 bytes)
time_init: decrementer frequency = 24.913389 MHz
time_init: processor frequency   = 700.000000 MHz

and then the machine freezes and requires a power cycle to restart.
Without that option enabled I get this:

Hrm... that's pretty much when console_init() gets called, which means
no message until the fbdev kicks in, thus we just "miss" the messages
from there to the crash.... Can you edit arch/powerpc/kernel/udbg.c,
there is a function called disable_early_printk() which contains a #if
1, turn that into #if 0 and tell me if you get a more useful log after
the time_init thing. Thanks !