1 /* 2 * (C) Copyright 2002 3 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> 4 * Marius Groeger <mgroeger@sysgo.de> 5 * 6 * (C) Copyright 2002 7 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> 8 * Alex Zuepke <azu@sysgo.de> 9 * 10 * (C) Copyright 2002 11 * Gary Jennejohn, DENX Software Engineering, <gj@denx.de> 12 * 13 * (C) Copyright 2009 14 * Ilya Yanok, Emcraft Systems Ltd, <yanok@emcraft.com> 15 * 16 * SPDX-License-Identifier: GPL-2.0+ 17 */ 18 19 #include <common.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 */ 26 void reset_cpu(ulong ignored) 27 { 28 struct wdog_regs *regs = (struct wdog_regs *)IMX_WDT_BASE; 29 /* Disable watchdog and set Time-Out field to 0 */ 30 writel(0x00000000, ®s->wcr); 31 32 /* Write Service Sequence */ 33 writel(0x00005555, ®s->wsr); 34 writel(0x0000AAAA, ®s->wsr); 35 36 /* Enable watchdog */ 37 writel(WCR_WDE, ®s->wcr); 38 39 while (1); 40 /*NOTREACHED*/ 41 } 42