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Re: Decrementer exception, again
Thanks for the input! It is very much appreciated.
Philip Schulz wrote:
> I think the exception you're seeing is being handled by Open
> Firmware, i.e. the "Decrementer exception at ..." stuff is Open
> Firmware's output.
> So anyways, what happens when you enter
> 1 1f lshift not dec!
> at the Open Firmware prompt just before booting?
Interesting! Very good suggestion.
This does indeed change something. Now I reliably get
Invalid memory access at %SRR0: 00000036 %SRR1: 00003600
I have tried this roughly a dozen times, and now it appears to be always
this, and never the decrementer exception. Previously I would also
sometimes get the invalid memory access, but rarely.
Curiously enough, the values for SRR0 and SRR1 are the same as for the
decrementer exception that I previously had.
I've now also tried booting 1.6, 2.0 and 3.0 Kernels, but none of
them with success. And I gave Antoine Reilles' NOP-patches  a shot,
no success either.
I should say that a single time (with the 2.0) Kernel, it actually
started a console and dropped me into the kernel debugger immediately.
I was not able to reproduce this despite trying many times, though.
I believe this is PR 22316 .
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