You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
1.7 KiB
63 lines
1.7 KiB
/*
|
|
* 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);
|
|
}
|
|
|