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Make MTRR min hole alignment 64MB

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This affects the algorithm when determining when to
transform a range into a larger range with a hole.

It is needed when for when I switch on an 8MB TSEG
and cause the memory maps to go crazy.

Also add header defines for the SMRR.

Change-Id: I1a06ccc28ef139cc79f655a8b19fd3533aca0401
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: http://review.coreboot.org/765
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This commit is contained in:
Duncan Laurie 2012-01-09 22:05:18 -08:00 • committed by Stefan Reinauer
commit 7b67892be8
2 changed files with 9 additions and 3 deletions
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3
src/include/cpu/x86/mtrr.h
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@ -17,6 +17,9 @@
#define MTRRdefTypeEn (1 << 11)
#define MTRRdefTypeFixEn (1 << 10)
#define SMRRphysBase_MSR 0x1f2
#define SMRRphysMask_MSR 0x1f3
#define MTRRphysBase_MSR(reg) (0x200 + 2 * (reg))
#define MTRRphysMask_MSR(reg) (0x200 + 2 * (reg) + 1)