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--0-1917937547-1024188157=:12307
Content-Type: TEXT/PLAIN; charset=US-ASCII

For the folks on port-powerpc, there is a change to
lib/libkern/arch/powerpc around 3/13 that broke booting on some powermacs
under certain circumstances.

On Sat, 15 Jun 2002, Makoto Fujiwara wrote:

> Bill> Can someone try Manuel's time warp, with most of the kernel at 3/14
> Bill> source, but lib/libkern/arch/powerpc at 3/13? The author of this change
> Bill> says it *should* compile.
>
> I did that. The kernel compiled works fine with kbd/screen.

Ok. We're making progress.

I've attached the diffs I find in cvs covering these files in this time
frame. Makoto, do you agree that these are the relevant diffs?

These diffs touch two files, sys/lib/libkern/arch/powerpc/bzero.S and
sys/lib/libkern/arch/powerpc/syncicache.c.

I believe we need only look at the KERNEL case code.

One weird thing about this change is that you need version 1.3 of
sys/arch/powerpc/mpc6xx/genassym.cf for it to work right. CPU_CI, used on
line 206 of bzero.S, isn't defined w/o the above file. I'm not sure why
bzero.S would compile.

The only other thing I can think of is that we're calling one of these
routines before the cache info has gotten filled in.

Try applying the diffs one at a time & see what's the problem.

Thanks!

Take care,

Bill

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