Re: Disabling data cache

On Wed, Apr 02, 2003 at 02:23:01PM -0500, Dan Malek wrote:

Matt Porter wrote:

quoted

On Wed, Apr 02, 2003 at 09:28:21AM -0500, Jean-Denis Boyer wrote:

quoted

There is a kernel configuration option for that: CONFIG_DCACHE_DISABLE.
In the kernel configuration UI, look into the section 'MPC8260 CPM
Options'.

There is no code backing that option in linuxppc_2_4_devel, it is useless.

It was orginally done for 8xx processors.  I suspect someone (I don't
think it was me) :-) tried to consolidate 8xx and 82xx CPM configurations
and messed it up.

My guess and recollection is that the 8260 version of this was to
disable the DCACHE in a certain manner, because of buggy silicon on a
specific board.  Someone unmerged this bit of code later I think.

--
Tom Rini
http://gate.crashing.org/~trini/

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/