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 * See file CREDITS for list of people who contributed to this 17 * project. 18 * 19 * This program is free software; you can redistribute it and/or 20 * modify it under the terms of the GNU General Public License as 21 * published by the Free Software Foundation; either version 2 of 22 * the License, or (at your option) any later version. 23 * 24 * This program is distributed in the hope that it will be useful, 25 * but WITHOUT ANY WARRANTY; without even the implied warranty of 26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 27 * GNU General Public License for more details. 28 * 29 * You should have received a copy of the GNU General Public License 30 * along with this program; if not, write to the Free Software 31 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 32 * MA 02111-1307 USA 33 */ 34 35 #include <common.h> 36 #include <asm/io.h> 37 #include <asm/arch/imx-regs.h> 38 39 /* 40 * Reset the cpu by setting up the watchdog timer and let it time out 41 */ 42 void reset_cpu(ulong ignored) 43 { 44 struct wdog_regs *regs = (struct wdog_regs *)IMX_WDT_BASE; 45 /* Disable watchdog and set Time-Out field to 0 */ 46 writew(0, ®s->wcr); 47 48 /* Write Service Sequence */ 49 writew(WSR_UNLOCK1, ®s->wsr); 50 writew(WSR_UNLOCK2, ®s->wsr); 51 52 /* Enable watchdog */ 53 writew(WCR_WDE, ®s->wcr); 54 55 while (1) ; 56 } 57