timer interrupt for task switching

[Geoff Wyche]

Hello all,

I'm having an odd problem with my prototype 860T linuxppc system.
The linux kernel boots fine, but hangs when it attempts to launch /linuxrc
If I issue a soft reset to the CPU via BDM, the processor reboots, the linux
kernel boots fine, and then launches /linuxrc with no problems.

I believe that somehow I have turned off some crucial timer interrupt that
controls process switching, which prevents the kernel from ever starting
/linuxrc

What interrupt handler triggers task switching?

Should I be concerned about these messages, printed during the boot
sequence?

Decrementer Frequency = 187500000/60
Warning: real time clock seems stuck!

The warning is printed even after the soft reset, when process switching
seems to work.

--Geoff
gwyche at datum.com

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