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| author | Uwe Hermann <uwe@hermann-uwe.de> | 2010-10-01 21:46:04 +0000 |
|---|---|---|
| committer | Uwe Hermann <uwe@hermann-uwe.de> | 2010-10-01 21:46:04 +0000 |
| commit | dd8367006cf1a400384ff7076379bb53c6abea8a (patch) | |
| tree | 9e6b74a79611549266680071d3fa72558063d5f5 /src/include/cpu/x86/car.h | |
| parent | 2ba2b553b5ec01dced1ebadfa086c926f441f754 (diff) | |
| download | coreboot-dd8367006cf1a400384ff7076379bb53c6abea8a.tar.xz | |
Factor out common CAR asm snippets.
This makes the CAR implementations a lot more readable, shorter and
easier to follow, and also reduces the amount of uselessly duplicated code.
For example there are more than 12 open-coded "enable cache" instances
spread all over the place (and 12 "disable cache" ones), multiple
"enable mtrr", "save BIST", "restore BIST", etc. etc.
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5902 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/include/cpu/x86/car.h')
| -rw-r--r-- | src/include/cpu/x86/car.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/include/cpu/x86/car.h b/src/include/cpu/x86/car.h new file mode 100644 index 0000000000..45c62c6424 --- /dev/null +++ b/src/include/cpu/x86/car.h @@ -0,0 +1,75 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2000,2007 Ronald G. Minnich <rminnich@gmail.com> + * Copyright (C) 2007-2008 coresystems GmbH + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <cpu/x86/mtrr.h> + +/* Save the BIST result. */ +#define save_bist_result() \ + movl %eax, %ebp + +/* Restore the BIST result. */ +#define restore_bist_result() \ + movl %ebp, %eax + +/* Enable cache. */ +#define enable_cache() \ + movl %cr0, %eax; \ + andl $(~((1 << 30) | (1 << 29))), %eax; \ + movl %eax, %cr0 + +/* Disable cache. */ +#define disable_cache() \ + movl %cr0, %eax; \ + orl $(1 << 30), %eax; \ + movl %eax, %cr0 + +/* Enable MTRR. */ +#define enable_mtrr() \ + movl $MTRRdefType_MSR, %ecx; \ + rdmsr; \ + orl $(1 << 11), %eax; \ + wrmsr + +/* Disable MTRR. */ +#define disable_mtrr() \ + movl $MTRRdefType_MSR, %ecx; \ + rdmsr; \ + andl $(~(1 << 11)), %eax; \ + wrmsr + +/* Enable L2 cache. */ +#define enable_l2_cache() \ + movl $0x11e, %ecx; \ + rdmsr; \ + orl $(1 << 8), %eax; \ + wrmsr + +/* Enable SSE. */ +#define enable_sse() \ + movl %cr4, %eax; \ + orl $(3 << 9), %eax; \ + movl %eax, %cr4 + +/* Disable SSE. */ +#define disable_sse() \ + movl %cr4, %eax; \ + andl $~(3 << 9), %eax; \ + movl %eax, %cr4 + |