[coreboot] [PATCH] Streamline CPU_ADDR_BITS usage

Uwe Hermann uwe at hermann-uwe.de
Sun Oct 3 23:59:47 CEST 2010

On Sun, Oct 03, 2010 at 11:07:27PM +0200, Patrick Georgi wrote:
> Am 03.10.2010 23:04, schrieb Carl-Daniel Hailfinger:
> > I want to be able to use my socket AM2+ board with K8 and Fam10
> > processors. If I also want fallback/normal images, this change forces me
> > to use 4 images instead of 2. And yes, people who use mainboards
> > actually may expect to be able to use processors from different
> > generations if the "normal" BIOS can handle that as well.
> > Due to that, I'd say Nack, but if you have strong technical reasons
> > (instead of cosmetic reasons) which result in a net benefit to end users
> > even if you factor in the feature loss, I will retract the Nack.
> You're still required to have an image for K8 and Fam10 each, simply
> because we don't support runtime selection of northbridge code in the
> romstage.
> The only thing I worked on was getting through CAR on either CPU, then
> jumped into the "right" image right afterwards (as was usual in pre-CBFS
> images)
> So we can debate if we want to keep the current support, but that
> requires more work (architecture changes in coreboot) to support
> multiple northbridges in all places, not just CAR.

I don't have plans to remove the possiblity for that in this patch.
Updated version attached which preserves the run-time choice, but
adds some hopefully correct comment.

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