blob: a69c978faa2708e30e1d1d37bdd70b7d9a3e2826 (
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
35
36
37
38
39
40
41
42
|
/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <cpu/x86/mtrr.h>
#include <cpu/x86/cache.h>
#include <cpu/x86/post_code.h>
#define NoEvictMod_MSR 0x2e0
.code32
.global chipset_teardown_car
chipset_teardown_car:
pop %esp
post_code(0x30)
/* Disable cache. */
movl %cr0, %eax
orl $CR0_CacheDisable, %eax
movl %eax, %cr0
post_code(0x31)
/* Disable MTRR. */
movl $MTRR_DEF_TYPE_MSR, %ecx
rdmsr
andl $(~MTRR_DEF_TYPE_EN), %eax
wrmsr
/* Disable the no eviction run state */
movl $NoEvictMod_MSR, %ecx
rdmsr
andl $~2, %eax
wrmsr
andl $~1, %eax
wrmsr
post_code(0x32)
/* Return to caller. */
jmp *%esp
|
