55 lines
1.9 KiB
C
55 lines
1.9 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 arm/timer.c
|
||
|
|
* ARM specific timer routines
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <libpayload.h>
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @ingroup arch
|
||
|
|
* Global variable containing the speed of the processor in KHz.
|
||
|
|
*/
|
||
|
|
u32 cpu_khz;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Calculate the speed of the processor for use in delays.
|
||
|
|
*
|
||
|
|
* @return The CPU speed in kHz.
|
||
|
|
*/
|
||
|
|
unsigned int get_cpu_speed(void)
|
||
|
|
{
|
||
|
|
/* FIXME */
|
||
|
|
cpu_khz = 1000000U;
|
||
|
|
|
||
|
|
return cpu_khz;
|
||
|
|
}
|