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e4a95d112e
This patch consolidates bootcount_{store|load} for PowerPC by
implementing a common version in arch/powerpc/lib/bootcount.c. This
code is now used by all PowerPC variants that currently have these
functions implemented.
The functions now use the proper IO-accessor functions to read/write the
values.
This code also supports two different bootcount versions:
a) Use 2 separate words (2 * 32bit) to store the bootcounter
b) Use only 1 word (2 * 16bit) to store the bootcounter
Version b) was already used by MPC5xxx.
Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
for 83xx parts
Cc: Michael Zaidman <michael.zaidman@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Kim Phillips <kim.phillips@freescale.com>
Cc: Anatolij Gustschin <agust@denx.de>
90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
/*
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* (C) Copyright 2010
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* Stefan Roese, DENX Software Engineering, sr@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/io.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_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_MPC8360)
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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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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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out_be32(reg, (BOOTCOUNT_MAGIC & 0xffff0000) | a);
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#else
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out_be32(reg, a);
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out_be32(reg + 4, BOOTCOUNT_MAGIC);
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#endif
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}
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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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if (in_be16(reg + 2) != (BOOTCOUNT_MAGIC & 0xffff))
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return 0;
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else
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return in_be16(reg);
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#else
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if (in_be32(reg + 4) != BOOTCOUNT_MAGIC)
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return 0;
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else
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return in_be32(reg);
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#endif
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}
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