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 <asm/io.h>
20 #include <asm/arch/imx-regs.h>
21
22 /*
23 * Reset the cpu by setting up the watchdog timer and let it time out
24 */
reset_cpu(ulong ignored)25 void reset_cpu(ulong ignored)
26 {
27 struct wdog_regs *regs = (struct wdog_regs *)IMX_WDT_BASE;
28 /* Disable watchdog and set Time-Out field to 0 */
29 writew(0x0000, ®s->wcr);
30
31 /* Write Service Sequence */
32 writew(0x5555, ®s->wsr);
33 writew(0xAAAA, ®s->wsr);
34
35 /* Enable watchdog */
36 writew(WCR_WDE, ®s->wcr);
37
38 while (1);
39 /*NOTREACHED*/
40 }
41