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/* AT91SAM7 Watch Dog Timer code for OpenPCD / OpenPICC
* (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <lib_AT91SAM7.h>
#include <AT91SAM7.h>
#include <os/dbgu.h>
#include <os/system_irq.h>
#define WDT_WDD 0xFF
#define WDT_WDV 0xFF
#ifdef WDT_DEBUG
#undef WDT_DEBUG
#endif/*WDT_DEBUG*/
static void wdt_irq(uint32_t sr)
{
if (sr & 1)
AT91F_DBGU_Frame("================> WATCHDOG EXPIRED !!!!!\n\r");
if (sr & 2)
AT91F_DBGU_Frame("================> WATCHDOG ERROR !!!!!\n\r");
}
void wdt_restart(void)
{
AT91F_WDTRestart(AT91C_BASE_WDTC);
}
void wdt_init(void)
{
sysirq_register(AT91SAM7_SYSIRQ_WDT, &wdt_irq);
#ifdef WDT_DEBUG
AT91F_WDTSetMode(AT91C_BASE_WDTC, (WDT_WDD << 16) |
AT91C_WDTC_WDDBGHLT | AT91C_WDTC_WDIDLEHLT |
AT91C_WDTC_WDFIEN | WDT_WDV);
#else
AT91F_WDTSetMode(AT91C_BASE_WDTC, (WDT_WDD << 16) |
AT91C_WDTC_WDDBGHLT | AT91C_WDTC_WDIDLEHLT |
AT91C_WDTC_WDRSTEN | WDT_WDV);
#endif
}
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