/* * 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; }