60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/*
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* (C) Copyright 2014 Robert Jarzmik <robert.jarzmik@free.fr>
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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 <init.h>
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#include <reset_source.h>
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#include <mach/hardware.h>
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#include <mach/pxa-regs.h>
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extern void pxa_suspend(int mode);
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static int pxa_detect_reset_source(void)
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{
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u32 reg = RCSR;
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/*
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* Order is important, as many bits can be set together
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*/
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if (reg & RCSR_GPR)
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reset_source_set(RESET_RST);
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else if (reg & RCSR_WDR)
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reset_source_set(RESET_WDG);
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else if (reg & RCSR_HWR)
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reset_source_set(RESET_POR);
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else if (reg & RCSR_SMR)
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reset_source_set(RESET_WKE);
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else
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reset_source_set(RESET_UKWN);
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return 0;
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}
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void pxa_clear_reset_source(void)
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{
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RCSR = RCSR_GPR | RCSR_SMR | RCSR_WDR | RCSR_HWR;
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}
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device_initcall(pxa_detect_reset_source);
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void __noreturn poweroff(void)
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{
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shutdown_barebox();
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/* Clear last reset source */
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pxa_clear_reset_source();
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pxa_suspend(PWRMODE_DEEPSLEEP);
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unreachable();
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}
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