diff options
author | Lee Leahy <leroy.p.leahy@intel.com> | 2015-05-05 15:07:29 -0700 |
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committer | Leroy P Leahy <leroy.p.leahy@intel.com> | 2015-05-23 01:40:57 +0200 |
commit | 77ff0b1a01d3d640be55d301b2fcf09a3f840ffe (patch) | |
tree | c745968f84ca4638f3a27881a5ee3943cf39773f /src/soc/intel/braswell/bootblock/timestamp.inc | |
parent | b5ad827ee584a960212ae983e30cd1a0b18c55a5 (diff) |
Braswell: Use Baytrail as Comparison Base
Add baytrail source for comparison with Braswell.
BRANCH=none
BUG=None
TEST=None
Change-Id: I5170addf41676d95a3daf070a32bcee085f8156d
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: http://review.coreboot.org/10117
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/soc/intel/braswell/bootblock/timestamp.inc')
-rw-r--r-- | src/soc/intel/braswell/bootblock/timestamp.inc | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/soc/intel/braswell/bootblock/timestamp.inc b/src/soc/intel/braswell/bootblock/timestamp.inc new file mode 100644 index 0000000000..3db5c35c4d --- /dev/null +++ b/src/soc/intel/braswell/bootblock/timestamp.inc @@ -0,0 +1,18 @@ +/* Store the initial timestamp for booting in mmx registers. This works + * because the bootblock isn't being compiled with MMX support so mm0 and + * mm1 will be preserved into romstage. */ + .code32 + +.global stash_timestamp +stash_timestamp: + + /* Save the BIST value */ + movl %eax, %ebp + + finit + rdtsc + movd %eax, %mm0 + movd %edx, %mm1 + + /* Restore the BIST value to %eax */ + movl %ebp, %eax |