/*
 * 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;
}