038e7247dc
Change-Id: I7f0d3400126d593bad8e78f95e6b9a378463b4ce Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/15963 Tested-by: build bot (Jenkins) Reviewed-by: Omar Pakker Reviewed-by: Martin Roth <martinroth@google.com>
37 lines
911 B
C
37 lines
911 B
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2013 Google Inc.
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* Copyright (C) 2015-2016 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <stdint.h>
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#include <cpu/x86/msr.h>
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#include <cpu/x86/tsc.h>
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static unsigned long bus_freq_khz(void)
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{
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/* CPU freq = 400 MHz */
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return 400 * 1000;
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}
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unsigned long tsc_freq_mhz(void)
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{
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/* assume ratio=1 */
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unsigned bclk_khz = bus_freq_khz();
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if (!bclk_khz)
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return 0;
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return (bclk_khz * 1) / 1000;
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}
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