55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
/*
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* (C) Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (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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#include <common.h>
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#include <mach/pxa-regs.h>
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#include <asm/io.h>
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#define OSMR3 0x40A0000C
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#define OSCR 0x40A00010
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#define OSSR 0x40A00014
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#define OWER 0x40A00018
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#define OWER_WME (1 << 0) /* Watch-dog Match Enable */
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#define OSSR_M3 (1 << 3) /* Match status channel 3 */
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extern void pxa_suspend(int mode);
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void reset_cpu(ulong addr)
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{
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/* Clear last reset source */
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RCSR = RCSR_GPR | RCSR_SMR | RCSR_WDR | RCSR_HWR;
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/* Initialize the watchdog and let it fire */
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writel(OWER_WME, OWER);
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writel(OSSR_M3, OSSR);
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writel(readl(OSCR) + 368640, OSMR3); /* ... in 100 ms */
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while (1);
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}
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void __noreturn poweroff()
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{
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shutdown_barebox();
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/* Clear last reset source */
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RCSR = RCSR_GPR | RCSR_SMR | RCSR_WDR | RCSR_HWR;
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pxa_suspend(PWRMODE_DEEPSLEEP);
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unreachable();
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}
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