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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 Google Inc.
* Copyright (C) 2015-2016 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 <stdint.h>
#include <cpu/x86/msr.h>
#include <cpu/x86/tsc.h>
static unsigned long bus_freq_khz(void)
{
/* cpu freq = 400 MHz */
return 400 * 1000;
}
unsigned long tsc_freq_mhz(void)
{
/* assume ratio=1 */
unsigned bclk_khz = bus_freq_khz();
if (!bclk_khz)
return 0;
return (bclk_khz * 1) / 1000;
}
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