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57210c7c MS |
1 | /* |
2 | * (c) Copyright 2011 by Tigris Elektronik GmbH | |
3 | * | |
4 | * Author: | |
5 | * Maximilian Schwerin <mvs@tigris.de> | |
6 | * | |
7 | * See file CREDITS for list of people who contributed to this | |
8 | * project. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License as | |
12 | * published by the Free Software Foundation; either version 2 of | |
13 | * the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
23 | * MA 02111-1307 USA | |
24 | */ | |
25 | ||
26 | #include <common.h> | |
27 | ||
28 | #include <command.h> | |
29 | #include <environment.h> | |
30 | #include <linux/stddef.h> | |
31 | #include <malloc.h> | |
32 | #include <search.h> | |
33 | #include <errno.h> | |
34 | #include <fat.h> | |
35 | #include <mmc.h> | |
36 | ||
37 | char *env_name_spec = "FAT"; | |
38 | ||
39 | env_t *env_ptr; | |
40 | ||
41 | DECLARE_GLOBAL_DATA_PTR; | |
42 | ||
57210c7c MS |
43 | int env_init(void) |
44 | { | |
45 | /* use default */ | |
46 | gd->env_addr = (ulong)&default_environment[0]; | |
47 | gd->env_valid = 1; | |
48 | ||
49 | return 0; | |
50 | } | |
51 | ||
52 | #ifdef CONFIG_CMD_SAVEENV | |
53 | int saveenv(void) | |
54 | { | |
55 | env_t env_new; | |
56 | ssize_t len; | |
57 | char *res; | |
58 | block_dev_desc_t *dev_desc = NULL; | |
59 | int dev = FAT_ENV_DEVICE; | |
60 | int part = FAT_ENV_PART; | |
9aa90c1d | 61 | int err; |
57210c7c MS |
62 | |
63 | res = (char *)&env_new.data; | |
be11235a | 64 | len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL); |
57210c7c MS |
65 | if (len < 0) { |
66 | error("Cannot export environment: errno = %d\n", errno); | |
67 | return 1; | |
68 | } | |
69 | ||
70 | #ifdef CONFIG_MMC | |
9aa90c1d | 71 | if (strcmp(FAT_ENV_INTERFACE, "mmc") == 0) { |
57210c7c MS |
72 | struct mmc *mmc = find_mmc_device(dev); |
73 | ||
74 | if (!mmc) { | |
75 | printf("no mmc device at slot %x\n", dev); | |
76 | return 1; | |
77 | } | |
78 | ||
79 | mmc->has_init = 0; | |
80 | mmc_init(mmc); | |
81 | } | |
82 | #endif /* CONFIG_MMC */ | |
83 | ||
84 | dev_desc = get_dev(FAT_ENV_INTERFACE, dev); | |
85 | if (dev_desc == NULL) { | |
86 | printf("Failed to find %s%d\n", | |
87 | FAT_ENV_INTERFACE, dev); | |
88 | return 1; | |
89 | } | |
9aa90c1d IG |
90 | |
91 | err = fat_register_device(dev_desc, part); | |
92 | if (err) { | |
57210c7c MS |
93 | printf("Failed to register %s%d:%d\n", |
94 | FAT_ENV_INTERFACE, dev, part); | |
95 | return 1; | |
96 | } | |
97 | ||
98 | env_new.crc = crc32(0, env_new.data, ENV_SIZE); | |
9aa90c1d IG |
99 | err = file_fat_write(FAT_ENV_FILE, (void *)&env_new, sizeof(env_t)); |
100 | if (err == -1) { | |
57210c7c MS |
101 | printf("\n** Unable to write \"%s\" from %s%d:%d **\n", |
102 | FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part); | |
103 | return 1; | |
104 | } | |
105 | ||
106 | puts("done\n"); | |
107 | return 0; | |
108 | } | |
109 | #endif /* CONFIG_CMD_SAVEENV */ | |
110 | ||
111 | void env_relocate_spec(void) | |
112 | { | |
113 | char buf[CONFIG_ENV_SIZE]; | |
114 | block_dev_desc_t *dev_desc = NULL; | |
115 | int dev = FAT_ENV_DEVICE; | |
116 | int part = FAT_ENV_PART; | |
9aa90c1d | 117 | int err; |
57210c7c MS |
118 | |
119 | #ifdef CONFIG_MMC | |
9aa90c1d | 120 | if (strcmp(FAT_ENV_INTERFACE, "mmc") == 0) { |
57210c7c MS |
121 | struct mmc *mmc = find_mmc_device(dev); |
122 | ||
123 | if (!mmc) { | |
124 | printf("no mmc device at slot %x\n", dev); | |
125 | set_default_env(NULL); | |
126 | return; | |
127 | } | |
128 | ||
129 | mmc->has_init = 0; | |
130 | mmc_init(mmc); | |
131 | } | |
132 | #endif /* CONFIG_MMC */ | |
133 | ||
134 | dev_desc = get_dev(FAT_ENV_INTERFACE, dev); | |
135 | if (dev_desc == NULL) { | |
136 | printf("Failed to find %s%d\n", | |
137 | FAT_ENV_INTERFACE, dev); | |
138 | set_default_env(NULL); | |
139 | return; | |
140 | } | |
9aa90c1d IG |
141 | |
142 | err = fat_register_device(dev_desc, part); | |
143 | if (err) { | |
57210c7c MS |
144 | printf("Failed to register %s%d:%d\n", |
145 | FAT_ENV_INTERFACE, dev, part); | |
146 | set_default_env(NULL); | |
147 | return; | |
148 | } | |
149 | ||
9aa90c1d IG |
150 | err = file_fat_read(FAT_ENV_FILE, (uchar *)&buf, CONFIG_ENV_SIZE); |
151 | if (err == -1) { | |
57210c7c MS |
152 | printf("\n** Unable to read \"%s\" from %s%d:%d **\n", |
153 | FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part); | |
154 | set_default_env(NULL); | |
155 | return; | |
156 | } | |
157 | ||
158 | env_import(buf, 1); | |
159 | } |