[coreboot] [PATCH] Split model_67x CPU support from model_6xx, with microcode / L2 cache code question

Keith Hui buurin at gmail.com
Wed Oct 13 19:48:10 CEST 2010

On Wed, Oct 13, 2010 at 1:03 PM, Uwe Hermann <uwe at hermann-uwe.de> wrote:
> On Tue, Oct 12, 2010 at 11:41:24PM -0400, Keith Hui wrote:
>> Attached patch adds support for Katmai Slot 1 CPUs (model_67x).
>> abuild-tested. Boot tested on P2B-LS.
>> Signed-off-by: Keith Hui <buurin at gmail.com>
> Thanks, r5950 with some small whitespace changes.
> I also dropped the name.o from Makefile.inc, the functions provided
> there are not (yet?) used in model_67x I think.
> Also, you added 671 as CPU ID to model_67x which was not in there yet.
> Can you point me to the document where this one is listed, so we can
> reference it in a code comment?

There are two references of that CPU ID that I know of. I found a
microcode update for a 0x671 CPU from the Intel file. Then I remember
looking at Intel's processor finder website and found mentions of it.
Now that site has been reorganized as ark.intel.com I can no longer
easily confirm which S-spec CPUs will identify as 0x671. It's there
for completeness.

>> As we already know the L2 patch is a huge chunk of code, so let's
>> figure out where best to place that code. It is specific to 63x,65x
>> and 67x CPUs. There are some small code path differences between these
>> CPU families. I'm trying to minimize duplication;
> Yep.
>> if these code can be
>> put in one .c file and be linked from a few other places, that's how
>> I'd prefer it.
> Yes, that would be great.
So the question now is where in the tree? This can for example be
potentially placed in
cpu/intel/slot_1 because only slot 1 CPUs need the setup
cpu/intel/model_67x because I'm going to start here first
among a few other candidates.


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