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Viewing changes to roms/u-boot/drivers/bootcount/bootcount.c

  • Committer: Phil Dennis-Jordan
  • Date: 2017-07-21 08:03:43 UTC
  • mfrom: (1.1.1)
  • Revision ID: phil@philjordan.eu-20170721080343-2yr2vdj7713czahv
New upstream release 2.9.0.

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roms/u-boot/drivers/bootcount/bootcount.c
 
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/*
 
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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_MPC5xxx)
 
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#define CONFIG_SYS_BOOTCOUNT_ADDR       (MPC5XXX_CDM_BRDCRMB)
 
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#define CONFIG_SYS_BOOTCOUNT_SINGLEWORD
 
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#endif /* defined(CONFIG_MPC5xxx) */
 
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#if defined(CONFIG_MPC512X)
 
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#define CONFIG_SYS_BOOTCOUNT_ADDR       (&((immap_t *)CONFIG_SYS_IMMR)->clk.bcr)
 
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#define CONFIG_SYS_BOOTCOUNT_SINGLEWORD
 
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#endif /* defined(CONFIG_MPC512X) */
 
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#if defined(CONFIG_8xx)
 
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#define CONFIG_SYS_BOOTCOUNT_ADDR (((immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_dpmem + \
 
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                                CPM_BOOTCOUNT_ADDR)
 
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#endif /* defined(CONFIG_8xx) */
 
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#if defined(CONFIG_MPC8260)
 
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#include <asm/cpm_8260.h>
 
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#define CONFIG_SYS_BOOTCOUNT_ADDR       (CONFIG_SYS_IMMR + CPM_BOOTCOUNT_ADDR)
 
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#endif /* defined(CONFIG_MPC8260) */
 
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#if defined(CONFIG_QE)
 
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#include <asm/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_MPC8360) */
 
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#if defined(CONFIG_4xx)
 
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#define CONFIG_SYS_BOOTCOUNT_ADDR       (CONFIG_SYS_OCM_DATA_ADDR + \
 
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                                CONFIG_SYS_BOOTCOUNT_ADDR)
 
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#endif /* defined(CONFIG_4xx) */
 
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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
 
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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
 
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}
 
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#endif