On Wed, Sep 26, 2001 at 08:47:12PM -0400, Dan Malek wrote: > Matt Porter wrote: > > > 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 at mvista.com ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
