diff options
| author | Elyes HAOUAS <ehaouas@noos.fr> | 2018-12-07 14:49:20 +0100 |
|---|---|---|
| committer | Nico Huber <nico.h@gmx.de> | 2019-01-27 12:13:09 +0000 |
| commit | d731a24ff1b9f148609fa5052449caaab129e260 (patch) | |
| tree | 3d830326ba066e14a6cc2df9d0f7330fa35af842 /src/include/cpu/intel | |
| parent | b58e99dfa56e1cf02e5bc0720872836bf8bded93 (diff) | |
src/cpu/intel: Set get_ia32_fsb function common
Add get_ia32_fsb returns FSB values in MHz of intel's CPUs.
Also add get_ia32_fsb_x3 function. It returns round up 3 * get_ia32_fsb.
Change-Id: I232bf88de7ebba6ac5865db046ce79e9b2f3ed28
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/30103
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/include/cpu/intel')
| -rw-r--r-- | src/include/cpu/intel/fsb.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/include/cpu/intel/fsb.h b/src/include/cpu/intel/fsb.h new file mode 100644 index 0000000000..49f3b17aae --- /dev/null +++ b/src/include/cpu/intel/fsb.h @@ -0,0 +1,30 @@ +/* + * 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. + */ + +#ifndef CPU_INTEL_FSB_H +#define CPU_INTEL_FSB_H + +/* + * This function returns: + * the system bus speed value in MHz + * -1 if FSB is not found + * -2 if the CPU is not supported + */ +int get_ia32_fsb(void); + +/* + * This function returns round up 3 * get_ia32_fsb() + */ +int get_ia32_fsb_x3(void); + +#endif /* CPU_INTEL_FSB_H */ |