[coreboot] More v3 questions/issues
corey.osgood at gmail.com
Thu Dec 18 02:38:16 CET 2008
On Wed, Dec 17, 2008 at 7:05 PM, ron minnich <rminnich at gmail.com> wrote:
> one more note.
> It's looking, increasingly, like future CPUs will require
> initlalization very early in startup. Some will require it right after
> initram; some during initram; and some BEFORE initram.
> But they will all require it in what we call stage 1 -- before the
> device tree exists.
> The implication is that the device tree may not be that useful in
> future for "CPUs as devices". I think we should plan around this. CPUs
> were always kind of a stretch to make a device anyway. Just FYI.
I'm agreeing with this. I think proper init for the cpu right after
disable_car() would greatly speed up the boot process. Carl-Daniel, would
there be any problem with calling functions to enable mtrrs and the cache
(if it's not already) from the end of disable_car()? If not permanently, at
least for the time being, to find out if it would help and to reduce the
current 20 minute test cycle?
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