watchdog.c

uboot详细解读可用启动引导LINUX2.6内核

/*
 * watchdog.c - driver for Blackfin on-chip watchdog
 *
 * Copyright (c) 2007-2008 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */

#include <common.h>
#include <watchdog.h>
#include <asm/blackfin.h>

#ifdef CONFIG_HW_WATCHDOG
void hw_watchdog_reset(void)
{
	bfin_write_WDOG_STAT(0);
}

void hw_watchdog_init(void)
{
	bfin_write_WDOG_CNT(5 * get_sclk());	/* 5 second timeout */
	hw_watchdog_reset();
	bfin_write_WDOG_CTL(0x0);
}
#endif