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/*
*
* This file is part of the coreboot project.
*
* Copyright (c) 2014, The Linux Foundation. All rights reserved.
* Copyright 2014 Google Inc.
*
* 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.
*/
#include <console/console.h>
#include <soc/iomap.h>
#include <reset.h>
/* Watchdog bite time set to default reset value */
#define RESET_WDT_BITE_TIME 0x31F3
/* Watchdog bark time value is kept larger than the watchdog timeout
* of 0x31F3, effectively disabling the watchdog bark interrupt
*/
#define RESET_WDT_BARK_TIME (5 * RESET_WDT_BITE_TIME)
static void wdog_reset(void)
{
printk(BIOS_DEBUG, "\nResetting with watchdog!\n");
write32(APCS_WDT0_EN, 0);
write32(APCS_WDT0_RST, 1);
write32(APCS_WDT0_BARK_TIME, RESET_WDT_BARK_TIME);
write32(APCS_WDT0_BITE_TIME, RESET_WDT_BITE_TIME);
write32(APCS_WDT0_EN, 1);
write32(APCS_WDT0_CPU0_WDOG_EXPIRED_ENABLE, 1);
for (;;)
;
}
void hard_reset(void)
{
wdog_reset();
}
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