blob: 14369066bebdb743bba010b9aac1a7748148a173 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
/*
* Store the initial timestamp for booting in mmx registers. This works
* because the bootblock isn't being compiled with MMX support so mm1 and
* mm2 will be preserved into romstage.
*/
.code32
.global stash_timestamp
stash_timestamp:
/* Save the BIST value */
movl %eax, %ebx
finit
rdtsc
movd %ebx, %mm0
movd %eax, %mm1
movd %edx, %mm2
/* Restore the BIST value to %eax */
movl %ebx, %eax
|
