On Wed, Sep 26, 2001 at 08:47:12PM -0400, Dan Malek wrote:

Matt Porter wrote:

quoted

Force's PowerBoot doesn't properly clean up caches before handing
control over to an external program.  You are probably having
cache problems that we have run into on some COTS Force boards.
I had to disable, flush, reenable L1 icache on the 680/G4, for
example.

So, you are really running on luck then.  When you disable the

Absolutely, we are running on luck.

cache, you are just fortunate that the necessary instructions
to do the remainder of the work just happen to be in main memory,
and that the cache was somehow implicitly invalidated so the ones
you need to get to this point aren't stale in the cache.  Are
you really sure the caches aren't cleaned up properly and this
sequence of operations isn't masking some other problem?

I understand it's dangerous but it did limp around whatever the
root problem is.  It could be masking another problem...this
is a problem awaiting someone with time to understand it.

--
Matt Porter
MontaVista Software, Inc.
mporter@mvista.com

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