> In message <20000928151525.H10263@radicalmedia.com> Mark Abene writes:
> : Unfortunately it panics very early in the boot process.  What now???
> ...
> : Please fix implementation of mips3_*Flush*Cache
>

I did a quick look at mips/mips/machdep.c where the error
occurrs...according
to source (in mips/mips/machdep.c) secondaryl2 cache needs to be set..
The output you have since it isn't ( "L2 cache: unknown size...")..
The cache is set or rather should be set in arc/arc/machdep.c but
it isn't being set for Magnum( defaults to 0). The fix might be
to set L2 cache correctly (or the assumption in /mips/mips/machdep.c
you must have a secondaryL2 cache is wrong)..