[people/ms/u-boot.git] / post / cpu / ppc4xx / watchdog.c

/*
 * (C) Copyright 2007
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * Author: Igor Lisitsin <igor@emcraft.com>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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 <common.h>

/*
 * Watchdog test
 *
 * The test verifies the watchdog timer operation.
 * On the first iteration, the test routine disables interrupts and
 * makes a 10-second delay. If the system does not reboot during this delay,
 * the watchdog timer is not operational and the test fails. If the system
 * reboots, on the second iteration the test routine reports a success.
 */

#include <post.h>

#if CONFIG_POST & CONFIG_SYS_POST_WATCHDOG

#include <watchdog.h>

int watchdog_post_test (int flags)
{
	if (flags & POST_REBOOT) {
		/* Test passed */
		return 0;
	}
	else {
		/* 10-second delay */
		int ints = disable_interrupts ();
		ulong base = post_time_ms (0);

		while (post_time_ms (base) < 10000)
			;
		if (ints)
			enable_interrupts ();

		/*
		 * If we have reached this point, the watchdog timer
		 * does not work
		 */
		return -1;
	}
}

#endif /* CONFIG_POST & CONFIG_SYS_POST_WATCHDOG */
Commit	Line	Data
a11e0696 IL	1	/*
	2	* (C) Copyright 2007
	3	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	4	*
b4489621 SP	5	* Author: Igor Lisitsin <igor@emcraft.com>
b4489621 SP	6	*
a11e0696 IL	7	* See file CREDITS for list of people who contributed to this
	8	* project.
	9	*
	10	* This program is free software; you can redistribute it and/or
	11	* modify it under the terms of the GNU General Public License as
	12	* published by the Free Software Foundation; either version 2 of
	13	* the License, or (at your option) any later version.
	14	*
	15	* This program is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	* GNU General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU General Public License
	21	* along with this program; if not, write to the Free Software
	22	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	23	* MA 02111-1307 USA
	24	*/
	25
	26	#include <common.h>
	27
	28	/*
	29	* Watchdog test
	30	*
	31	* The test verifies the watchdog timer operation.
	32	* On the first iteration, the test routine disables interrupts and
	33	* makes a 10-second delay. If the system does not reboot during this delay,
	34	* the watchdog timer is not operational and the test fails. If the system
	35	* reboots, on the second iteration the test routine reports a success.
	36	*/
	37
a11e0696	38	#include <post.h>
a11e0696	39
6d0f6bcf	40	#if CONFIG_POST & CONFIG_SYS_POST_WATCHDOG
a11e0696	41
b4489621 SP	42	#include <watchdog.h>
b4489621 SP	43
a11e0696 IL	44	int watchdog_post_test (int flags)
	45	{
	46	if (flags & POST_REBOOT) {
	47	/* Test passed */
a11e0696	48	return 0;
b4489621 SP	49	}
b4489621 SP	50	else {
a11e0696 IL	51	/* 10-second delay */
	52	int ints = disable_interrupts ();
	53	ulong base = post_time_ms (0);
	54
	55	while (post_time_ms (base) < 10000)
	56	;
	57	if (ints)
	58	enable_interrupts ();
	59
	60	/*
	61	* If we have reached this point, the watchdog timer
	62	* does not work
	63	*/
	64	return -1;
	65	}
	66	}
	67
6d0f6bcf	68	#endif /* CONFIG_POST & CONFIG_SYS_POST_WATCHDOG */