arch/x86: Support "weak" BIST and timestamp save routines

Not all x86 architectures support the mm register set.  The default
routine that saves BIST in mm0 and a "weak" routine that saves the TSC
value in mm2:mm1.  Select the Kconfig value
BOOTBLOCK_SAVE_BIST_AND_TIMESTAMP to provide a replacement routine to
save the BIST and timestamp values.

TEST=Build and run on Amenia and Galileo Gen2.

Change-Id: I8119e74664ac3522c011767d424d441cd62545ce
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/15126
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

0 files changed, 0 insertions, 0 deletions