mirror of
https://github.com/AsahiLinux/u-boot
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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>
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/*
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* (C) Copyright 2000-2004
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* Wolfgang Denk, DENX Software Engineering, wd@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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*
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* Atapted for ppc4XX by Denis Peter
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*/
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#include <common.h>
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#include <commproc.h>
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#include <asm/io.h>
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#if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
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#if defined(CONFIG_SYS_POST_WORD_ADDR)
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# define _POST_ADDR ((CONFIG_SYS_OCM_DATA_ADDR) + (CONFIG_SYS_POST_WORD_ADDR))
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#elif defined(CONFIG_SYS_POST_ALT_WORD_ADDR)
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# define _POST_ADDR (CONFIG_SYS_POST_ALT_WORD_ADDR)
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#endif
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void post_word_store (ulong a)
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{
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volatile void *save_addr = (volatile void *)(_POST_ADDR);
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out_be32(save_addr, a);
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}
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ulong post_word_load (void)
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{
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volatile void *save_addr = (volatile void *)(_POST_ADDR);
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return in_be32(save_addr);
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}
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#endif /* CONFIG_POST || CONFIG_LOGBUFFER*/
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