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/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <libpayload.h>
#include <arch/cpu.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)
{
if (IMG_PLATFORM_ID() != IMG_PLATFORM_ID_SILICON)
cpu_khz = 50000U; /* FPGA board */
/* else {
* TODO find CPU frequency on the real SOC
} */
return cpu_khz;
}
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