Re: CONFIG_MIPS_UNCACHED

["Kevin D. Kissell" <kevink@mips.com>]

> > Since the kernel cache attribute is never initialized before
> > ld_mmu_{whatever} is invoked, and since that Config field
> > does not have a well-defined reset state on many MIPS
> > CPUs, it would appear that we are in effect trusting the
> > bootloader to have done something reasonable like
> > set kseg0 to be non-cachable or write-through, either
> > of which would be safe for the current code.
>
> I think you just proposed a fix: check current config register when we
turn
> off cache.  Thanks. :-)

That's a heuristic at best.  If the config register comes up random,
it can appear to be sane even though the cache is in fact uninitialized.

            Kevin K.