diff options
Diffstat (limited to 'src/cpu/amd/family_10h-family_15h/tsc_freq.c')
| -rw-r--r-- | src/cpu/amd/family_10h-family_15h/tsc_freq.c | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/src/cpu/amd/family_10h-family_15h/tsc_freq.c b/src/cpu/amd/family_10h-family_15h/tsc_freq.c deleted file mode 100644 index 793cc1bfad..0000000000 --- a/src/cpu/amd/family_10h-family_15h/tsc_freq.c +++ /dev/null @@ -1,36 +0,0 @@ -/* - * 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. - */ - -#include <stdint.h> -#include <cpu/x86/msr.h> -#include <cpu/amd/msr.h> -#include <cpu/x86/tsc.h> - -unsigned long tsc_freq_mhz(void) -{ - msr_t msr; - uint8_t cpufid; - uint8_t cpudid; - - /* On Family 10h/15h CPUs the TSC increments - * at the P0 clock rate. Read the P0 clock - * frequency from the P0 MSR and convert - * to MHz. See also the Family 15h BKDG - * Rev. 3.14 page 569. - */ - msr = rdmsr(PSTATE_0_MSR); - cpufid = (msr.lo & 0x3f); - cpudid = (msr.lo & 0x1c0) >> 6; - - return (100 * (cpufid + 0x10)) / (0x01 << cpudid); -} |