[LinuxBIOS] Re: serial debug messages workaround

[Dave Ashley]

Doug Bell was having trouble with serial out on epia-sp.

I tracked this problem to the cache. If the
early_mtrr_init() call isn't done, the problem goes
away. Within early_mtrr_init() if the call to
enable_cache() is commented out, the problem goes
away. Enabling the cache on the c3 Nehemia is
causing strange behaviour.

This mailing list is pretty much dead as regards
actual help, NXTV is working on epia-sp support
and we'll be contributing our results back to the
project. Some support would be in order. I/NXTV
contributed plenty years ago to the epia-m support
for V1, as many old timers will attest.

-Dave

[Jonathan McDowell]

On Wed, Sep 14, 2005 at 01:02:30PM -0700, Dave Ashley wrote:
> Doug Bell was having trouble with serial out on epia-sp.
>
> I tracked this problem to the cache. If the early_mtrr_init() call
> isn't done, the problem goes away. Within early_mtrr_init() if the
> call to enable_cache() is commented out, the problem goes away.
> Enabling the cache on the c3 Nehemia is causing strange behaviour.

I committed similar change for EPIA-M earlier today; I'm now getting a
lot further with a plain SVN tree on EPIA-M than I have for a long
while.

J.