blob: efa4d42cbf4ca7181ca83ebb6909104e2cf6ecbe [file] [log] [blame]
/*
* (C) Copyright 2011
* Heiko Schocher, DENX Software Engineering, hs@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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, &reg->kick0r);
writel(RTC_KICK1R_WE, &reg->kick1r);
raw_bootcount_store(&reg->scratch0, a);
raw_bootcount_store(&reg->scratch1, BOOTCOUNT_MAGIC);
}
ulong bootcount_load(void)
{
struct davinci_rtc *reg =
(struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR;
if (raw_bootcount_load(&reg->scratch1) != BOOTCOUNT_MAGIC)
return 0;
else
return raw_bootcount_load(&reg->scratch0);
}