blob: c7b77abcf5922424e008212a7f99137a45f2e984 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
/*
* Copyright (c) 2008 Carsten Schlote <c.schlote@konzeptpark.de>
* See file CREDITS for list of people who contributed to this project.
*
* This file is part of barebox.
*
* barebox is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* barebox is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with barebox. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file
* Implements a watchdog triggered reset for V4e Coldfire cores
*/
#include <common.h>
#include <mach/mcf54xx-regs.h>
/**
* Reset the cpu by setting up the watchdog timer and let it time out
*/
void reset_cpu (ulong ignored)
{
while ( ignored ) { ; };
/* Disable watchdog and set Time-Out field to minimum timeout value */
MCF_GPT_GMS0 = 0;
MCF_GPT_GCIR0 = MCF_GPT_GCIR_PRE(1) | MCF_GPT_GCIR_CNT(0xffff);
/* Enable watchdog */
MCF_GPT_GMS0 = MCF_GPT_GMS_OCPW(0xA5) | MCF_GPT_GMS_WDEN | MCF_GPT_GMS_CE | MCF_GPT_GMS_TMS_GPIO;
while (1);
/*NOTREACHED*/
}
EXPORT_SYMBOL(reset_cpu);
|