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https://github.com/brain-hackers/u-boot-brain
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1754f50b71
The privious 4xx POST implementation only supported storing the POST WORD in OCM. Since we need to reserve the OCM on LWMON5 for the logbuffer we need to store the POST WORD in some other non volatile location. This patch adds CFG_POST_ALT_WORD_ADDR to specify an address for such a location. Signed-off-by: Stefan Roese <sr@denx.de>
82 lines
2.1 KiB
C
82 lines
2.1 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(CFG_POST_ALT_WORD_ADDR)
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void post_word_store (ulong a)
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{
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out_be32((void *)CFG_POST_ALT_WORD_ADDR, a);
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}
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ulong post_word_load (void)
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{
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return in_be32((void *)CFG_POST_ALT_WORD_ADDR);
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}
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#else /* CFG_POST_ALT_WORD_ADDR */
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void post_word_store (ulong a)
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{
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volatile void *save_addr = (volatile void *)(CFG_OCM_DATA_ADDR + CFG_POST_WORD_ADDR);
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*(volatile ulong *) 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 *)(CFG_OCM_DATA_ADDR + CFG_POST_WORD_ADDR);
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return *(volatile ulong *) save_addr;
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}
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#endif /* CFG_POST_ALT_WORD_ADDR */
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#endif /* CONFIG_POST || CONFIG_LOGBUFFER*/
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#ifdef CONFIG_BOOTCOUNT_LIMIT
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void bootcount_store (ulong a)
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{
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volatile ulong *save_addr =
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(volatile ulong *)(CFG_OCM_DATA_ADDR + CFG_BOOTCOUNT_ADDR);
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save_addr[0] = a;
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save_addr[1] = BOOTCOUNT_MAGIC;
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}
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ulong bootcount_load (void)
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{
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volatile ulong *save_addr =
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(volatile ulong *)(CFG_OCM_DATA_ADDR + CFG_BOOTCOUNT_ADDR);
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if (save_addr[1] != BOOTCOUNT_MAGIC)
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return 0;
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else
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return save_addr[0];
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}
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#endif /* CONFIG_BOOTCOUNT_LIMIT */
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