64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
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/*
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* Copyright (C) 1999 ARM Limited
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* Copyright (C) 2000 Deep Blue Solutions Ltd
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* Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
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* Copyright 2008 Juergen Beisert, kernel@pengutronix.de
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include <linux/clk.h>
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#include <linux/io.h>
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#include <asm/arch/hardware.h>
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#include <asm/proc-fns.h>
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#include <asm/system.h>
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/*
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* Put the CPU into idle mode. It is called by default_idle()
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* in process.c file.
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*/
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void arch_idle(void)
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{
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/*
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* This should do all the clock switching
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* and wait for interrupt tricks.
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*/
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cpu_do_idle();
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}
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#define WDOG_WCR_REG IO_ADDRESS(WDOG_BASE_ADDR)
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#define WDOG_WCR_SRS (1 << 4)
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/*
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* Reset the system. It is called by machine_restart().
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*/
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void arch_reset(char mode)
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{
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struct clk *clk;
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clk = clk_get(NULL, "wdog_clk");
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if (!clk) {
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printk(KERN_ERR"Cannot activate the watchdog. Giving up\n");
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return;
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}
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clk_enable(clk);
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/* Assert SRS signal */
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__raw_writew(__raw_readw(WDOG_WCR_REG) & ~WDOG_WCR_SRS, WDOG_WCR_REG);
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}
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