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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 | * | |
3765b3e7 | 7 | * SPDX-License-Identifier: GPL-2.0+ |
57210c7c MS |
8 | */ |
9 | ||
10 | #include <common.h> | |
11 | ||
12 | #include <command.h> | |
13 | #include <environment.h> | |
14 | #include <linux/stddef.h> | |
15 | #include <malloc.h> | |
16 | #include <search.h> | |
17 | #include <errno.h> | |
18 | #include <fat.h> | |
19 | #include <mmc.h> | |
20 | ||
21 | char *env_name_spec = "FAT"; | |
22 | ||
23 | env_t *env_ptr; | |
24 | ||
25 | DECLARE_GLOBAL_DATA_PTR; | |
26 | ||
57210c7c MS |
27 | int env_init(void) |
28 | { | |
29 | /* use default */ | |
30 | gd->env_addr = (ulong)&default_environment[0]; | |
31 | gd->env_valid = 1; | |
32 | ||
33 | return 0; | |
34 | } | |
35 | ||
36 | #ifdef CONFIG_CMD_SAVEENV | |
37 | int saveenv(void) | |
38 | { | |
cd0f4fa1 | 39 | env_t env_new; |
57210c7c MS |
40 | ssize_t len; |
41 | char *res; | |
42 | block_dev_desc_t *dev_desc = NULL; | |
43 | int dev = FAT_ENV_DEVICE; | |
44 | int part = FAT_ENV_PART; | |
9aa90c1d | 45 | int err; |
57210c7c | 46 | |
cd0f4fa1 | 47 | res = (char *)&env_new.data; |
be11235a | 48 | len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL); |
57210c7c MS |
49 | if (len < 0) { |
50 | error("Cannot export environment: errno = %d\n", errno); | |
51 | return 1; | |
52 | } | |
53 | ||
54 | #ifdef CONFIG_MMC | |
9aa90c1d | 55 | if (strcmp(FAT_ENV_INTERFACE, "mmc") == 0) { |
57210c7c MS |
56 | struct mmc *mmc = find_mmc_device(dev); |
57 | ||
58 | if (!mmc) { | |
59 | printf("no mmc device at slot %x\n", dev); | |
60 | return 1; | |
61 | } | |
62 | ||
63 | mmc->has_init = 0; | |
64 | mmc_init(mmc); | |
65 | } | |
66 | #endif /* CONFIG_MMC */ | |
67 | ||
68 | dev_desc = get_dev(FAT_ENV_INTERFACE, dev); | |
69 | if (dev_desc == NULL) { | |
70 | printf("Failed to find %s%d\n", | |
71 | FAT_ENV_INTERFACE, dev); | |
72 | return 1; | |
73 | } | |
9aa90c1d IG |
74 | |
75 | err = fat_register_device(dev_desc, part); | |
76 | if (err) { | |
57210c7c MS |
77 | printf("Failed to register %s%d:%d\n", |
78 | FAT_ENV_INTERFACE, dev, part); | |
79 | return 1; | |
80 | } | |
81 | ||
cd0f4fa1 TR |
82 | env_new.crc = crc32(0, env_new.data, ENV_SIZE); |
83 | err = file_fat_write(FAT_ENV_FILE, (void *)&env_new, sizeof(env_t)); | |
9aa90c1d | 84 | if (err == -1) { |
57210c7c MS |
85 | printf("\n** Unable to write \"%s\" from %s%d:%d **\n", |
86 | FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part); | |
87 | return 1; | |
88 | } | |
89 | ||
90 | puts("done\n"); | |
91 | return 0; | |
92 | } | |
93 | #endif /* CONFIG_CMD_SAVEENV */ | |
94 | ||
95 | void env_relocate_spec(void) | |
96 | { | |
cd0f4fa1 | 97 | char buf[CONFIG_ENV_SIZE]; |
57210c7c MS |
98 | block_dev_desc_t *dev_desc = NULL; |
99 | int dev = FAT_ENV_DEVICE; | |
100 | int part = FAT_ENV_PART; | |
9aa90c1d | 101 | int err; |
57210c7c MS |
102 | |
103 | #ifdef CONFIG_MMC | |
9aa90c1d | 104 | if (strcmp(FAT_ENV_INTERFACE, "mmc") == 0) { |
57210c7c MS |
105 | struct mmc *mmc = find_mmc_device(dev); |
106 | ||
107 | if (!mmc) { | |
108 | printf("no mmc device at slot %x\n", dev); | |
109 | set_default_env(NULL); | |
110 | return; | |
111 | } | |
112 | ||
113 | mmc->has_init = 0; | |
114 | mmc_init(mmc); | |
115 | } | |
116 | #endif /* CONFIG_MMC */ | |
117 | ||
118 | dev_desc = get_dev(FAT_ENV_INTERFACE, dev); | |
119 | if (dev_desc == NULL) { | |
120 | printf("Failed to find %s%d\n", | |
121 | FAT_ENV_INTERFACE, dev); | |
122 | set_default_env(NULL); | |
123 | return; | |
124 | } | |
9aa90c1d IG |
125 | |
126 | err = fat_register_device(dev_desc, part); | |
127 | if (err) { | |
57210c7c MS |
128 | printf("Failed to register %s%d:%d\n", |
129 | FAT_ENV_INTERFACE, dev, part); | |
130 | set_default_env(NULL); | |
131 | return; | |
132 | } | |
133 | ||
9aa90c1d IG |
134 | err = file_fat_read(FAT_ENV_FILE, (uchar *)&buf, CONFIG_ENV_SIZE); |
135 | if (err == -1) { | |
57210c7c MS |
136 | printf("\n** Unable to read \"%s\" from %s%d:%d **\n", |
137 | FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part); | |
138 | set_default_env(NULL); | |
139 | return; | |
140 | } | |
141 | ||
142 | env_import(buf, 1); | |
143 | } |