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 */ 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(0, ®s->wcr); 30 31 /* Write Service Sequence */ 32 writew(WSR_UNLOCK1, ®s->wsr); 33 writew(WSR_UNLOCK2, ®s->wsr); 34 35 /* Enable watchdog */ 36 writew(WCR_WDE, ®s->wcr); 37 38 while (1) ; 39 } 40