From ee2e936f4059d8aad4161d44915a05271df1aaae Mon Sep 17 00:00:00 2001 From: Kyösti Mälkki Date: Fri, 28 Dec 2018 16:06:45 +0200 Subject: arch/x86: Unify bootblock MMX register usage MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Have same usage of registers with romcc bootblock and C_ENVIRONMENT_BOOTBLOCK. Change-Id: Ibfa80e40f0b736a904abf4245fc23efc0cdc458d Signed-off-by: Kyösti Mälkki Reviewed-on: https://review.coreboot.org/c/30490 Tested-by: build bot (Jenkins) Reviewed-by: Arthur Heymans --- src/arch/x86/timestamp.inc | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'src/arch/x86/timestamp.inc') 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 -- cgit v1.2.3