mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-13 06:42:56 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
31 lines
739 B
C
31 lines
739 B
C
/*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#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;
|
|
}
|