u-boot/drivers/watchdog/mpc8xx_wdt.c
Christophe Leroy c0bc2a7e06 powerpc: mpc8xx: move watchdog into drivers/watchdog
In preparation of DM watchdog, move basic actions into drivers/watchdog

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
2018-04-06 16:31:11 -04:00

21 lines
435 B
C

/*
* Copyright 2017 CS Systemes d'Information
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <mpc8xx.h>
#include <asm/cpm_8xx.h>
#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
void hw_watchdog_reset(void)
{
immap_t __iomem *immap = (immap_t __iomem *)CONFIG_SYS_IMMR;
out_be16(&immap->im_siu_conf.sc_swsr, 0x556c); /* write magic1 */
out_be16(&immap->im_siu_conf.sc_swsr, 0xaa39); /* write magic2 */
}