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/*
* 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 <common.h>
#include <asm/io.h>
#include <asm/arch/hardware.h>
#include <asm/arch/at91_gpbr.h>
/*
* We combine the BOOTCOUNT_MAGIC and bootcount in one 32-bit register.
* This is done so we need to use only one of the four GPBR registers.
*/
void bootcount_store(ulong a)
{
at91_gpbr_t *gpbr = (at91_gpbr_t *) ATMEL_BASE_GPBR;
writel((BOOTCOUNT_MAGIC & 0xffff0000) | (a & 0x0000ffff),
&gpbr->reg[AT91_GPBR_INDEX_BOOTCOUNT]);
}
ulong bootcount_load(void)
{
at91_gpbr_t *gpbr = (at91_gpbr_t *) ATMEL_BASE_GPBR;
ulong val = readl(&gpbr->reg[AT91_GPBR_INDEX_BOOTCOUNT]);
if ((val & 0xffff0000) != (BOOTCOUNT_MAGIC & 0xffff0000))
return 0;
else
return val & 0x0000ffff;
}
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