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https://github.com/brain-hackers/u-boot-brain
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81129d07a0
This patch fixes the reset command on imx25. The watchdog registers are 16 bits in size and not 32. This patch also adds the service register codes as constants. Signed-off-by: Matthias Weisser <weisserm@arcor.de>
57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.de>
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Alex Zuepke <azu@sysgo.de>
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*
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* (C) Copyright 2002
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* Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
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*
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* (C) Copyright 2009
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* Ilya Yanok, Emcraft Systems Ltd, <yanok@emcraft.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/imx-regs.h>
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/*
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* Reset the cpu by setting up the watchdog timer and let it time out
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*/
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void reset_cpu (ulong ignored)
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{
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struct wdog_regs *regs = (struct wdog_regs *)IMX_WDT_BASE;
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/* Disable watchdog and set Time-Out field to 0 */
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writew(0, ®s->wcr);
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/* Write Service Sequence */
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writew(WSR_UNLOCK1, ®s->wsr);
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writew(WSR_UNLOCK2, ®s->wsr);
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/* Enable watchdog */
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writew(WCR_WDE, ®s->wcr);
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while (1) ;
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}
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