[people/ms/u-boot.git] / board / w7o / watchdog.c

/*
 * (C) Copyright 2001
 * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

/*
 * W7O board level hardware watchdog.
 */
#include <common.h>
#include <config.h>

#ifdef CONFIG_HW_WATCHDOG
#include <watchdog.h>

void hw_watchdog_reset(void)
{
    volatile ushort *hwd = (ushort *)(CONFIG_SYS_W7O_EBC_PB7CR & 0xfff00000);

    /*
     * Read the LMG's hwd register and toggle the
     * watchdog bit to reset it.   On the LMC, just
     * reading it is enough, but toggling the bit
     * doen't hurt either.
     */
    *hwd = *hwd ^ 0x8000;

} /* hw_watchdog_reset() */

#endif /* CONFIG_HW_WATCHDOG */
Commit	Line	Data
affae2bf WD	1	/*
	2	* (C) Copyright 2001
	3	* Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
affae2bf WD	6	*/
	7
	8	/*
	9	* W7O board level hardware watchdog.
	10	*/
	11	#include <common.h>
	12	#include <config.h>
	13
	14	#ifdef CONFIG_HW_WATCHDOG
	15	#include <watchdog.h>
	16
	17	void hw_watchdog_reset(void)
	18	{
6d0f6bcf	19	volatile ushort hwd = (ushort )(CONFIG_SYS_W7O_EBC_PB7CR & 0xfff00000);
affae2bf WD	20
	21	/*
	22	* Read the LMG's hwd register and toggle the
	23	* watchdog bit to reset it. On the LMC, just
	24	* reading it is enough, but toggling the bit
	25	* doen't hurt either.
	26	*/
	27	hwd = hwd ^ 0x8000;
	28
	29	} /* hw_watchdog_reset() */
	30
	31	#endif /* CONFIG_HW_WATCHDOG */