Caching in the MPC107, linux 2.6

Tom Rini trini at
Tue Mar 16 09:48:43 EST 2004

On Mon, Mar 15, 2004 at 10:42:13PM +0000, Adrian Cox wrote:

> On Mon, 2004-03-15 at 20:38, Tom Rini wrote:
> > Actually, I was thinking that having an extra nop there on the !SMP &&
> > !(745x && MPC107) case wouldn't hurt much / at all, and having this
> > feature bit be done unconditionally.  But in cpu_setup_6xx.S we would
> > compare the host bridge vendor / device ID to that of an mpc107.  Or am
> > I not thinking right, and doing that comparison at that time would be a
> > bad idea?  If so, I can live with it being an unconditional option, iff
> > it's only required when MPC10X_STORE_GATHERING is enabled.
> The only problem I see is that in cpu_setup_6xx.S we can't yet do the
> config cycles to tell that it is an MPC107. Luckily, all MPC10x boards
> that I know of require an explicit platform selection option.
> I made my patch depend on CONFIG_MPC10X_BRIDGE, instead of
> CONFIG_MPC10X_STORE_GATHERING, because I'm in the middle of porting
> other MPC107 drivers from kernel 2.4 to 2.6.

I can live with that I think.  Can you send that version and I'll do any
additional cleanups (stylistically) ?

Tom Rini

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