diff options
| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2018-12-28 16:06:45 +0200 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-01-08 15:31:19 +0000 |
| commit | ee2e936f4059d8aad4161d44915a05271df1aaae (patch) | |
| tree | 0fcd03d80896097227eb0af35c6144b789b6165c /src/arch/x86 | |
| parent | 6267f5dd11aa43fd0bd84f84192db4ddaffa8575 (diff) | |
arch/x86: Unify bootblock MMX register usage
Have same usage of registers with romcc bootblock
and C_ENVIRONMENT_BOOTBLOCK.
Change-Id: Ibfa80e40f0b736a904abf4245fc23efc0cdc458d
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/30490
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src/arch/x86')
| -rw-r--r-- | src/arch/x86/timestamp.inc | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/src/arch/x86/timestamp.inc b/src/arch/x86/timestamp.inc index 3115c22c67..14369066be 100644 --- a/src/arch/x86/timestamp.inc +++ b/src/arch/x86/timestamp.inc @@ -13,8 +13,8 @@ /* * 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. + * because the bootblock isn't being compiled with MMX support so mm1 and + * mm2 will be preserved into romstage. */ .code32 @@ -22,12 +22,13 @@ stash_timestamp: /* Save the BIST value */ - movl %eax, %ebp + movl %eax, %ebx finit rdtsc - movd %eax, %mm0 - movd %edx, %mm1 + movd %ebx, %mm0 + movd %eax, %mm1 + movd %edx, %mm2 /* Restore the BIST value to %eax */ - movl %ebp, %eax + movl %ebx, %eax |