[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>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#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	*
1a459660	7	* SPDX-License-Identifier: GPL-2.0+
a11e0696 IL	8	*/
	9
	10	#include <common.h>
	11
	12	/*
	13	* Watchdog test
	14	*
	15	* The test verifies the watchdog timer operation.
	16	* On the first iteration, the test routine disables interrupts and
	17	* makes a 10-second delay. If the system does not reboot during this delay,
	18	* the watchdog timer is not operational and the test fails. If the system
	19	* reboots, on the second iteration the test routine reports a success.
	20	*/
	21
a11e0696	22	#include <post.h>
a11e0696	23
6d0f6bcf	24	#if CONFIG_POST & CONFIG_SYS_POST_WATCHDOG
a11e0696	25
b4489621 SP	26	#include <watchdog.h>
b4489621 SP	27
a11e0696 IL	28	int watchdog_post_test (int flags)
	29	{
	30	if (flags & POST_REBOOT) {
	31	/* Test passed */
a11e0696	32	return 0;
b4489621 SP	33	}
b4489621 SP	34	else {
a11e0696 IL	35	/* 10-second delay */
	36	int ints = disable_interrupts ();
	37	ulong base = post_time_ms (0);
	38
	39	while (post_time_ms (base) < 10000)
	40	;
	41	if (ints)
	42	enable_interrupts ();
	43
	44	/*
	45	* If we have reached this point, the watchdog timer
	46	* does not work
	47	*/
	48	return -1;
	49	}
	50	}
	51
6d0f6bcf	52	#endif /* CONFIG_POST & CONFIG_SYS_POST_WATCHDOG */