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1 | /* | |
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> | |
29 | #include <asm/io.h> | |
30 | ||
31 | #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER) | |
32 | ||
33 | #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) | |
37 | #endif | |
38 | ||
39 | void post_word_store (ulong a) | |
40 | { | |
41 | volatile void *save_addr = (volatile void *)(_POST_ADDR); | |
42 | ||
43 | out_be32(save_addr, a); | |
44 | } | |
45 | ||
46 | ulong post_word_load (void) | |
47 | { | |
48 | volatile void *save_addr = (volatile void *)(_POST_ADDR); | |
49 | ||
50 | return in_be32(save_addr); | |
51 | } | |
52 | ||
53 | #endif /* CONFIG_POST || CONFIG_LOGBUFFER*/ | |
54 | ||
55 | #ifdef CONFIG_BOOTCOUNT_LIMIT | |
56 | ||
57 | void bootcount_store (ulong a) | |
58 | { | |
59 | volatile ulong *save_addr = | |
60 | (volatile ulong *)(CONFIG_SYS_OCM_DATA_ADDR + CONFIG_SYS_BOOTCOUNT_ADDR); | |
61 | ||
62 | save_addr[0] = a; | |
63 | save_addr[1] = BOOTCOUNT_MAGIC; | |
64 | } | |
65 | ||
66 | ulong bootcount_load (void) | |
67 | { | |
68 | volatile ulong *save_addr = | |
69 | (volatile ulong *)(CONFIG_SYS_OCM_DATA_ADDR + CONFIG_SYS_BOOTCOUNT_ADDR); | |
70 | ||
71 | if (save_addr[1] != BOOTCOUNT_MAGIC) | |
72 | return 0; | |
73 | else | |
74 | return save_addr[0]; | |
75 | } | |
76 | ||
77 | #endif /* CONFIG_BOOTCOUNT_LIMIT */ |