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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2017 Intel Corporation.
*
* 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 <cpu/x86/msr.h>
#include <cpu/x86/tsc.h>
#include <intelblocks/msr.h>
unsigned long tsc_freq_mhz(void)
{
msr_t msr = rdmsr(MSR_PLATFORM_INFO);
return (CONFIG_CPU_BCLK_MHZ * ((msr.lo >> 8) & 0xff));
}
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