50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/*
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* (C) Copyright 2011
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* Heiko Schocher, DENX Software Engineering, hs@denx.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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*/
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#include <bootcount.h>
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#include <asm/arch/da850_lowlevel.h>
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#include <asm/arch/davinci_misc.h>
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void bootcount_store(ulong a)
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{
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struct davinci_rtc *reg =
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(struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR;
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/*
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* write RTC kick register to enable write
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* for RTC Scratch registers. Scratch0 and 1 are
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* used for bootcount values.
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*/
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writel(RTC_KICK0R_WE, ®->kick0r);
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writel(RTC_KICK1R_WE, ®->kick1r);
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raw_bootcount_store(®->scratch0, a);
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raw_bootcount_store(®->scratch1, BOOTCOUNT_MAGIC);
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}
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ulong bootcount_load(void)
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{
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struct davinci_rtc *reg =
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(struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR;
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if (raw_bootcount_load(®->scratch1) != BOOTCOUNT_MAGIC)
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return 0;
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else
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return raw_bootcount_load(®->scratch0);
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}
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