blob: 99304645299d03594d8ad4901d0f9e4a4504cf51 (
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
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
/*
* Copyright (C) 1999 ARM Limited
* Copyright (C) 2000 Deep Blue Solutions Ltd
* Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright 2008 Juergen Beisert, kernel@pengutronix.de
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/kernel.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <asm/arch/hardware.h>
#include <asm/proc-fns.h>
#include <asm/system.h>
/*
* Put the CPU into idle mode. It is called by default_idle()
* in process.c file.
*/
void arch_idle(void)
{
/*
* This should do all the clock switching
* and wait for interrupt tricks.
*/
cpu_do_idle();
}
#define WDOG_WCR_REG IO_ADDRESS(WDOG_BASE_ADDR)
#define WDOG_WCR_SRS (1 << 4)
/*
* Reset the system. It is called by machine_restart().
*/
void arch_reset(char mode)
{
struct clk *clk;
clk = clk_get(NULL, "wdog_clk");
if (!clk) {
printk(KERN_ERR"Cannot activate the watchdog. Giving up\n");
return;
}
clk_enable(clk);
/* Assert SRS signal */
__raw_writew(__raw_readw(WDOG_WCR_REG) & ~WDOG_WCR_SRS, WDOG_WCR_REG);
}
|
