e340ce0483
Add the pxa3xx architecture, for pxa300, pxa310 and pxa320 SoCs. This includes : - the registers - the cpu type - the reset source handling - a minimal set of clocks - pin control definitions In this last case, the big mfp-pxaxxx.h files were dropped, forcing board developers to use MFP_LPM_* macros cunningly. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/*
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* (C) Copyright 2015 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 pxa3xx_suspend(int mode);
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static int pxa_detect_reset_source(void)
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{
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u32 reg = ARSR;
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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 & ARSR_GPR)
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reset_source_set(RESET_RST);
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else if (reg & ARSR_WDT)
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reset_source_set(RESET_WDG);
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else if (reg & ARSR_HWR)
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reset_source_set(RESET_POR);
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else if (reg & ARSR_LPMR)
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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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ARSR = ARSR_GPR | ARSR_LPMR | ARSR_WDT | ARSR_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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pxa3xx_suspend(PXA3xx_PM_S3D4C4);
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unreachable();
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}
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