switch-coreboot/payloads/libpayload/drivers/timer/rdtsc.c
Patrick Georgi b4e7e4c8eb UPSTREAM: libpayload: timer: cast cpu_khz to make sure 64bit math is used
Change-Id: Iaf84de2330b433076a66c22fa72ffb45e957c0dc
Original-Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Found-by: Coverity Scan #1261177
Original-Reviewed-on: https://review.coreboot.org/18034
Original-Tested-by: build bot (Jenkins)
Original-Reviewed-by: Martin Roth <martinroth@google.com>
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/425984
Reviewed-by: Patrick Georgi <pgeorgi@chromium.org>
2017-01-09 23:46:56 -08:00

46 lines
1.7 KiB
C

/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/**
* @file x86/timer.c
* x86 specific timer routines
*/
#include <libpayload.h>
#include <arch/rdtsc.h>
uint64_t timer_hz(void)
{
return (uint64_t)lib_sysinfo.cpu_khz * 1000;
}
uint64_t timer_raw_value(void)
{
return rdtsc();
}