diff options
| author | Lee Leahy <leroy.p.leahy@intel.com> | 2015-05-12 18:19:47 -0700 |
|---|---|---|
| committer | Leroy P Leahy <leroy.p.leahy@intel.com> | 2015-07-16 17:23:27 +0200 |
| commit | b000513741d330947bb832a5835378e35bdfb394 (patch) | |
| tree | 0e039f881e195633b53c46424394715fff35558f /src/soc/intel/skylake/bootblock/timestamp.inc | |
| parent | 741a0dd89ce67d0fed9a7907bb77ed3ea9afba81 (diff) | |
soc/intel/skylake: Use Broadwell as comparision base for Skylake SOC
Use the Broadwell implementation as the comparison base for Skylake.
BRANCH=none
BUG=None
TEST=None
Change-Id: I22eb55ea89eb0d6883f98e4c72a6d243e819e6d8
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: http://review.coreboot.org/10340
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/soc/intel/skylake/bootblock/timestamp.inc')
| -rw-r--r-- | src/soc/intel/skylake/bootblock/timestamp.inc | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/bootblock/timestamp.inc b/src/soc/intel/skylake/bootblock/timestamp.inc new file mode 100644 index 0000000000..f565775ed8 --- /dev/null +++ b/src/soc/intel/skylake/bootblock/timestamp.inc @@ -0,0 +1,19 @@ +/* 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 + |