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Carl-Daniel Hailfinger e4d46b9e90 early_mtrr_init() nukes all MTRRs including those which we use for CAR. That means if it ever gets called while CAR is active, our stack will be dropped and mayhem will ensue. Besides that, it just replicated stage0.S functionality which already nukes all MTRRs before enabling CAR. We could move XIP ROM caching from stage0.S to early_mtrr_init(). It would probably slow down booting a bit, but the amount of asm code would be reduced. Thanks to Corey for telling me that early_mtrr_init() broke booting for him. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Ronald G. Minnich <rminnich@gmail.com> git-svn-id: svn://coreboot.org/repository/coreboot-v3@1067 f3766cd6-281f-0410-b1cd-43a5c92072e9	2008-12-10 18:34:16 +00:00
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x86	early_mtrr_init() nukes all MTRRs including those which we use for CAR.	2008-12-10 18:34:16 +00:00

Carl-Daniel Hailfinger e4d46b9e90 early_mtrr_init() nukes all MTRRs including those which we use for CAR.

That means if it ever gets called while CAR is active, our stack will be
dropped and mayhem will ensue.
Besides that, it just replicated stage0.S functionality which already
nukes all MTRRs before enabling CAR.

We could move XIP ROM caching from stage0.S to early_mtrr_init(). It
would probably slow down booting a bit, but the amount of asm code would
be reduced.

Thanks to Corey for telling me that early_mtrr_init() broke booting for
him.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>


git-svn-id: svn://coreboot.org/repository/coreboot-v3@1067 f3766cd6-281f-0410-b1cd-43a5c92072e9

2008-12-10 18:34:16 +00:00

x86

early_mtrr_init() nukes all MTRRs including those which we use for CAR.

2008-12-10 18:34:16 +00:00