Re: 32-bit ABI

["Maciej W. Rozycki" <macro@ds2.pg.gda.pl>]

On Sat, 24 Apr 2004, Ralf Baechle wrote:

> Actually the R10000 way to do something like this is to use the uncached
> attribute like in the Origin.  It allows using the same physical address
> space several times for different purposes.  So on node 0 of an Origin
> indeed memory starts at physical address zero and there is no hole for
> the firmware.  IP27 is afaik the only system using this R10000 feature
> which surprises me a little due to the otherwise great similarity of these
> two systems.

 That precludes the firmware from being run cached, though.  Not very 
nice, especially for callbacks, but perhaps a bit easier to deal with.

-- 
+  Maciej W. Rozycki, Technical University of Gdansk, Poland   +
+--------------------------------------------------------------+
+        e-mail: macro@ds2.pg.gda.pl, PGP key available        +