1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2002
4 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
5 * Marius Groeger <mgroeger@sysgo.de>
6 *
7 * (C) Copyright 2002
8 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
9 * Alex Zuepke <azu@sysgo.de>
10 *
11 * (C) Copyright 2002
12 * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
13 *
14 * (C) Copyright 2009
15 * Ilya Yanok, Emcraft Systems Ltd, <yanok@emcraft.com>
16 */
17
18 #include <common.h>
19 #include <cpu_func.h>
20 #include <asm/io.h>
21 #include <asm/arch/imx-regs.h>
22
23 /*
24 * Reset the cpu by setting up the watchdog timer and let it time out
25 */
reset_cpu(void)26 void reset_cpu(void)
27 {
28 struct wdog_regs *regs = (struct wdog_regs *)IMX_WDT_BASE;
29 /* Disable watchdog and set Time-Out field to 0 */
30 writew(0, ®s->wcr);
31
32 /* Write Service Sequence */
33 writew(WSR_UNLOCK1, ®s->wsr);
34 writew(WSR_UNLOCK2, ®s->wsr);
35
36 /* Enable watchdog */
37 writew(WCR_WDE, ®s->wcr);
38
39 while (1) ;
40 }
41