mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-17 09:14:19 +08:00
13cf8df97d
Since support for mxc91231 was introduced 2009 it only saw patches that were part of (mxc or arm) global cleanups. The only supported machine only had 4 devices (2x UART, sdhc, watchdog). Cc: Dmitriy Taychenachev <dimichxp@gmail.com> LAKML-Reference: 1302211482-17926-1-git-send-email-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/*
|
|
* 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
|
|
* Copyright 2009 Ilya Yanok, Emcraft Systems Ltd, yanok@emcraft.com
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/io.h>
|
|
#include <linux/err.h>
|
|
#include <linux/delay.h>
|
|
|
|
#include <mach/hardware.h>
|
|
#include <mach/common.h>
|
|
#include <asm/proc-fns.h>
|
|
#include <asm/system.h>
|
|
#include <asm/mach-types.h>
|
|
|
|
static void __iomem *wdog_base;
|
|
|
|
/*
|
|
* Reset the system. It is called by machine_restart().
|
|
*/
|
|
void arch_reset(char mode, const char *cmd)
|
|
{
|
|
unsigned int wcr_enable;
|
|
|
|
#ifdef CONFIG_MACH_MX51_EFIKAMX
|
|
if (machine_is_mx51_efikamx()) {
|
|
mx51_efikamx_reset();
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
if (cpu_is_mx1()) {
|
|
wcr_enable = (1 << 0);
|
|
} else {
|
|
struct clk *clk;
|
|
|
|
clk = clk_get_sys("imx2-wdt.0", NULL);
|
|
if (!IS_ERR(clk))
|
|
clk_enable(clk);
|
|
wcr_enable = (1 << 2);
|
|
}
|
|
|
|
/* Assert SRS signal */
|
|
__raw_writew(wcr_enable, wdog_base);
|
|
|
|
/* wait for reset to assert... */
|
|
mdelay(500);
|
|
|
|
printk(KERN_ERR "Watchdog reset failed to assert reset\n");
|
|
|
|
/* delay to allow the serial port to show the message */
|
|
mdelay(50);
|
|
|
|
/* we'll take a jump through zero as a poor second */
|
|
cpu_reset(0);
|
|
}
|
|
|
|
void mxc_arch_reset_init(void __iomem *base)
|
|
{
|
|
wdog_base = base;
|
|
}
|