blob: a1696d37e6c46c96548b316f6a2860fbb37ab5c8 [file] [log] [blame]
wdenk63e73c92004-02-23 22:22:28 +00001/*
2 * (C) Copyright 2000-2004
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 *
23 *
24 * Atapted for ppc4XX by Denis Peter
25 */
26
27#include <common.h>
28#include <commproc.h>
Stefan Roese1754f502008-01-09 10:25:46 +010029#include <asm/io.h>
wdenk63e73c92004-02-23 22:22:28 +000030
31#if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
32
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020033#if defined(CONFIG_SYS_POST_WORD_ADDR)
34# define _POST_ADDR ((CONFIG_SYS_OCM_DATA_ADDR) + (CONFIG_SYS_POST_WORD_ADDR))
35#elif defined(CONFIG_SYS_POST_ALT_WORD_ADDR)
36# define _POST_ADDR (CONFIG_SYS_POST_ALT_WORD_ADDR)
Grant Erickson22f371b2008-05-21 13:28:30 -070037#endif
38
Stefan Roese1754f502008-01-09 10:25:46 +010039void post_word_store (ulong a)
40{
Grant Erickson22f371b2008-05-21 13:28:30 -070041 volatile void *save_addr = (volatile void *)(_POST_ADDR);
42
43 out_be32(save_addr, a);
Stefan Roese1754f502008-01-09 10:25:46 +010044}
45
46ulong post_word_load (void)
47{
Grant Erickson22f371b2008-05-21 13:28:30 -070048 volatile void *save_addr = (volatile void *)(_POST_ADDR);
wdenk63e73c92004-02-23 22:22:28 +000049
Grant Erickson22f371b2008-05-21 13:28:30 -070050 return in_be32(save_addr);
wdenk63e73c92004-02-23 22:22:28 +000051}
wdenk63e73c92004-02-23 22:22:28 +000052
53#endif /* CONFIG_POST || CONFIG_LOGBUFFER*/
54
55#ifdef CONFIG_BOOTCOUNT_LIMIT
56
57void bootcount_store (ulong a)
58{
59 volatile ulong *save_addr =
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020060 (volatile ulong *)(CONFIG_SYS_OCM_DATA_ADDR + CONFIG_SYS_BOOTCOUNT_ADDR);
wdenk63e73c92004-02-23 22:22:28 +000061
62 save_addr[0] = a;
63 save_addr[1] = BOOTCOUNT_MAGIC;
64}
65
66ulong bootcount_load (void)
67{
68 volatile ulong *save_addr =
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020069 (volatile ulong *)(CONFIG_SYS_OCM_DATA_ADDR + CONFIG_SYS_BOOTCOUNT_ADDR);
wdenk63e73c92004-02-23 22:22:28 +000070
71 if (save_addr[1] != BOOTCOUNT_MAGIC)
72 return 0;
73 else
74 return save_addr[0];
75}
76
77#endif /* CONFIG_BOOTCOUNT_LIMIT */