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/*
* (C) Copyright 2011
* Heiko Schocher, DENX Software Engineering, hs@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <bootcount.h>
#include <asm/arch/da850_lowlevel.h>
#include <asm/arch/davinci_misc.h>
void bootcount_store(ulong a)
{
struct davinci_rtc *reg =
(struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR;
/*
* write RTC kick register to enable write
* for RTC Scratch registers. Scratch0 and 1 are
* used for bootcount values.
*/
writel(RTC_KICK0R_WE, ®->kick0r);
writel(RTC_KICK1R_WE, ®->kick1r);
raw_bootcount_store(®->scratch0, a);
raw_bootcount_store(®->scratch1, BOOTCOUNT_MAGIC);
}
ulong bootcount_load(void)
{
struct davinci_rtc *reg =
(struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR;
if (raw_bootcount_load(®->scratch1) != BOOTCOUNT_MAGIC)
return 0;
else
return raw_bootcount_load(®->scratch0);
}
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