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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2009 Samsung Electronics
*
* 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 <console/console.h>
#include <timer.h>
#include <delay.h>
#include <thread.h>
#include "clk.h"
void init_timer(void)
{
mct_start();
}
/* delay x useconds */
void udelay(unsigned usec)
{
struct mono_time current, end;
if (!thread_yield_microseconds(usec))
return;
timer_monotonic_get(¤t);
end = current;
mono_time_add_usecs(&end, usec);
if (mono_time_after(¤t, &end)) {
printk(BIOS_EMERG, "udelay: 0x%08x is impossibly large\n",
usec);
/* There's not much we can do if usec is too big. Use a long,
* paranoid delay value and hope for the best... */
end = current;
mono_time_add_usecs(&end, USECS_PER_SEC);
}
while (mono_time_before(¤t, &end))
timer_monotonic_get(¤t);
}
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