/*
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* (C) Copyright 2010-2012
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* Stefan Roese, DENX Software Engineering, sr@denx.de.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <bootcount.h>
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#include <linux/compiler.h>
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/*
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* Only override CONFIG_SYS_BOOTCOUNT_ADDR if not already defined. This
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* way, some boards can define it directly in their config header.
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*/
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#if !defined(CONFIG_SYS_BOOTCOUNT_ADDR)
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#if defined(CONFIG_QE)
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#include <linux/immap_qe.h>
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#define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_IMMR + 0x110000 + \
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QE_MURAM_SIZE - 2 * sizeof(u32))
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#endif /* defined(CONFIG_QE) */
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#endif /* !defined(CONFIG_SYS_BOOTCOUNT_ADDR) */
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/* Now implement the generic default functions */
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#if defined(CONFIG_SYS_BOOTCOUNT_ADDR)
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__weak void bootcount_store(ulong a)
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{
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void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR;
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#if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
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raw_bootcount_store(reg, (BOOTCOUNT_MAGIC & 0xffff0000) | a);
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#else
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raw_bootcount_store(reg, a);
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raw_bootcount_store(reg + 4, BOOTCOUNT_MAGIC);
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#endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD */
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}
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__weak ulong bootcount_load(void)
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{
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void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR;
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#if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
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u32 tmp = raw_bootcount_load(reg);
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if ((tmp & 0xffff0000) != (BOOTCOUNT_MAGIC & 0xffff0000))
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return 0;
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else
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return (tmp & 0x0000ffff);
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#else
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if (raw_bootcount_load(reg + 4) != BOOTCOUNT_MAGIC)
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return 0;
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else
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return raw_bootcount_load(reg);
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#endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD) */
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}
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#endif /* defined(CONFIG_SYS_BOOTCOUNT_ADDR) */
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