| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2015 Intel Corp. |
| * |
| * 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; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #include <cpu/x86/msr.h> |
| #include <cpu/x86/tsc.h> |
| #include <soc/cpu.h> |
| |
| unsigned long tsc_freq_mhz(void) |
| { |
| msr_t msr = rdmsr(MSR_PLATFORM_INFO); |
| return (BASE_CLOCK_MHZ * ((msr.lo >> 8) & 0xff)); |
| } |