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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> | |
cf92e05c | 16 | #include <memalign.h> |
57210c7c MS |
17 | #include <search.h> |
18 | #include <errno.h> | |
19 | #include <fat.h> | |
20 | #include <mmc.h> | |
21 | ||
4415f1d1 SG |
22 | #ifdef CONFIG_SPL_BUILD |
23 | /* TODO(sjg@chromium.org): Figure out why this is needed */ | |
24 | # if !defined(CONFIG_TARGET_AM335X_EVM) || defined(CONFIG_SPL_OS_BOOT) | |
25 | # define LOADENV | |
26 | # endif | |
27 | #else | |
28 | # define LOADENV | |
29 | # if defined(CONFIG_CMD_SAVEENV) | |
30 | # define CMD_SAVEENV | |
31 | # endif | |
32 | #endif | |
33 | ||
57210c7c MS |
34 | env_t *env_ptr; |
35 | ||
36 | DECLARE_GLOBAL_DATA_PTR; | |
37 | ||
4415f1d1 | 38 | #ifdef CMD_SAVEENV |
e5bce247 | 39 | static int env_fat_save(void) |
57210c7c | 40 | { |
cd0f4fa1 | 41 | env_t env_new; |
4101f687 | 42 | struct blk_desc *dev_desc = NULL; |
be354c1a WJ |
43 | disk_partition_t info; |
44 | int dev, part; | |
9aa90c1d | 45 | int err; |
1ad0b98a | 46 | loff_t size; |
57210c7c | 47 | |
7ce1526e MV |
48 | err = env_export(&env_new); |
49 | if (err) | |
50 | return err; | |
57210c7c | 51 | |
43ba3c59 TR |
52 | part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE, |
53 | CONFIG_ENV_FAT_DEVICE_AND_PART, | |
be354c1a WJ |
54 | &dev_desc, &info, 1); |
55 | if (part < 0) | |
57210c7c | 56 | return 1; |
9aa90c1d | 57 | |
bcce53d0 | 58 | dev = dev_desc->devnum; |
be354c1a WJ |
59 | if (fat_set_blk_dev(dev_desc, &info) != 0) { |
60 | printf("\n** Unable to use %s %d:%d for saveenv **\n", | |
43ba3c59 | 61 | CONFIG_ENV_FAT_INTERFACE, dev, part); |
57210c7c MS |
62 | return 1; |
63 | } | |
64 | ||
43ba3c59 | 65 | err = file_fat_write(CONFIG_ENV_FAT_FILE, (void *)&env_new, 0, sizeof(env_t), |
1ad0b98a | 66 | &size); |
9aa90c1d | 67 | if (err == -1) { |
57210c7c | 68 | printf("\n** Unable to write \"%s\" from %s%d:%d **\n", |
43ba3c59 | 69 | CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part); |
57210c7c MS |
70 | return 1; |
71 | } | |
72 | ||
73 | puts("done\n"); | |
74 | return 0; | |
75 | } | |
4415f1d1 | 76 | #endif /* CMD_SAVEENV */ |
57210c7c | 77 | |
4415f1d1 | 78 | #ifdef LOADENV |
e5bce247 | 79 | static void env_fat_load(void) |
57210c7c | 80 | { |
6d1966e1 | 81 | ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE); |
4101f687 | 82 | struct blk_desc *dev_desc = NULL; |
be354c1a WJ |
83 | disk_partition_t info; |
84 | int dev, part; | |
9aa90c1d | 85 | int err; |
57210c7c | 86 | |
43ba3c59 TR |
87 | part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE, |
88 | CONFIG_ENV_FAT_DEVICE_AND_PART, | |
be354c1a WJ |
89 | &dev_desc, &info, 1); |
90 | if (part < 0) | |
91 | goto err_env_relocate; | |
92 | ||
bcce53d0 | 93 | dev = dev_desc->devnum; |
be354c1a WJ |
94 | if (fat_set_blk_dev(dev_desc, &info) != 0) { |
95 | printf("\n** Unable to use %s %d:%d for loading the env **\n", | |
43ba3c59 | 96 | CONFIG_ENV_FAT_INTERFACE, dev, part); |
be354c1a | 97 | goto err_env_relocate; |
57210c7c MS |
98 | } |
99 | ||
43ba3c59 | 100 | err = file_fat_read(CONFIG_ENV_FAT_FILE, buf, CONFIG_ENV_SIZE); |
9aa90c1d | 101 | if (err == -1) { |
57210c7c | 102 | printf("\n** Unable to read \"%s\" from %s%d:%d **\n", |
43ba3c59 | 103 | CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part); |
be354c1a | 104 | goto err_env_relocate; |
57210c7c MS |
105 | } |
106 | ||
107 | env_import(buf, 1); | |
be354c1a WJ |
108 | return; |
109 | ||
110 | err_env_relocate: | |
111 | set_default_env(NULL); | |
57210c7c | 112 | } |
4415f1d1 SG |
113 | #endif /* LOADENV */ |
114 | ||
115 | U_BOOT_ENV_LOCATION(fat) = { | |
116 | .location = ENVL_FAT, | |
ac358beb | 117 | ENV_NAME("FAT") |
4415f1d1 | 118 | #ifdef LOADENV |
e5bce247 | 119 | .load = env_fat_load, |
4415f1d1 SG |
120 | #endif |
121 | #ifdef CMD_SAVEENV | |
e5bce247 | 122 | .save = env_save_ptr(env_fat_save), |
4415f1d1 | 123 | #endif |
4415f1d1 | 124 | }; |