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83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
57210c7c MS |
2 | /* |
3 | * (c) Copyright 2011 by Tigris Elektronik GmbH | |
4 | * | |
5 | * Author: | |
6 | * Maximilian Schwerin <mvs@tigris.de> | |
57210c7c MS |
7 | */ |
8 | ||
9 | #include <common.h> | |
90526e9f | 10 | #include <asm/cache.h> |
57210c7c MS |
11 | |
12 | #include <command.h> | |
0ac7d722 | 13 | #include <env.h> |
f3998fdc | 14 | #include <env_internal.h> |
57210c7c MS |
15 | #include <linux/stddef.h> |
16 | #include <malloc.h> | |
cf92e05c | 17 | #include <memalign.h> |
57210c7c MS |
18 | #include <search.h> |
19 | #include <errno.h> | |
20 | #include <fat.h> | |
21 | #include <mmc.h> | |
22 | ||
4415f1d1 SG |
23 | #ifdef CONFIG_SPL_BUILD |
24 | /* TODO(sjg@chromium.org): Figure out why this is needed */ | |
25 | # if !defined(CONFIG_TARGET_AM335X_EVM) || defined(CONFIG_SPL_OS_BOOT) | |
26 | # define LOADENV | |
27 | # endif | |
28 | #else | |
29 | # define LOADENV | |
4415f1d1 SG |
30 | #endif |
31 | ||
e5bce247 | 32 | static int env_fat_save(void) |
57210c7c | 33 | { |
cda87ec5 | 34 | env_t __aligned(ARCH_DMA_MINALIGN) env_new; |
4101f687 | 35 | struct blk_desc *dev_desc = NULL; |
0528979f | 36 | struct disk_partition info; |
be354c1a | 37 | int dev, part; |
9aa90c1d | 38 | int err; |
1ad0b98a | 39 | loff_t size; |
57210c7c | 40 | |
7ce1526e MV |
41 | err = env_export(&env_new); |
42 | if (err) | |
43 | return err; | |
57210c7c | 44 | |
43ba3c59 TR |
45 | part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE, |
46 | CONFIG_ENV_FAT_DEVICE_AND_PART, | |
be354c1a WJ |
47 | &dev_desc, &info, 1); |
48 | if (part < 0) | |
57210c7c | 49 | return 1; |
9aa90c1d | 50 | |
bcce53d0 | 51 | dev = dev_desc->devnum; |
be354c1a | 52 | if (fat_set_blk_dev(dev_desc, &info) != 0) { |
d0816da5 MR |
53 | /* |
54 | * This printf is embedded in the messages from env_save that | |
55 | * will calling it. The missing \n is intentional. | |
56 | */ | |
57 | printf("Unable to use %s %d:%d... ", | |
43ba3c59 | 58 | CONFIG_ENV_FAT_INTERFACE, dev, part); |
57210c7c MS |
59 | return 1; |
60 | } | |
61 | ||
43ba3c59 | 62 | err = file_fat_write(CONFIG_ENV_FAT_FILE, (void *)&env_new, 0, sizeof(env_t), |
1ad0b98a | 63 | &size); |
9aa90c1d | 64 | if (err == -1) { |
d0816da5 MR |
65 | /* |
66 | * This printf is embedded in the messages from env_save that | |
67 | * will calling it. The missing \n is intentional. | |
68 | */ | |
69 | printf("Unable to write \"%s\" from %s%d:%d... ", | |
43ba3c59 | 70 | CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part); |
57210c7c MS |
71 | return 1; |
72 | } | |
73 | ||
57210c7c MS |
74 | return 0; |
75 | } | |
57210c7c | 76 | |
4415f1d1 | 77 | #ifdef LOADENV |
c5951991 | 78 | static int env_fat_load(void) |
57210c7c | 79 | { |
6d1966e1 | 80 | ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE); |
4101f687 | 81 | struct blk_desc *dev_desc = NULL; |
0528979f | 82 | struct disk_partition info; |
be354c1a | 83 | int dev, part; |
9aa90c1d | 84 | int err; |
57210c7c | 85 | |
95058fbb | 86 | #ifdef CONFIG_MMC |
26862b4a FA |
87 | if (!strcmp(CONFIG_ENV_FAT_INTERFACE, "mmc")) |
88 | mmc_initialize(NULL); | |
95058fbb | 89 | #endif |
26862b4a | 90 | |
43ba3c59 TR |
91 | part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE, |
92 | CONFIG_ENV_FAT_DEVICE_AND_PART, | |
be354c1a WJ |
93 | &dev_desc, &info, 1); |
94 | if (part < 0) | |
95 | goto err_env_relocate; | |
96 | ||
bcce53d0 | 97 | dev = dev_desc->devnum; |
be354c1a | 98 | if (fat_set_blk_dev(dev_desc, &info) != 0) { |
d0816da5 MR |
99 | /* |
100 | * This printf is embedded in the messages from env_save that | |
101 | * will calling it. The missing \n is intentional. | |
102 | */ | |
103 | printf("Unable to use %s %d:%d... ", | |
43ba3c59 | 104 | CONFIG_ENV_FAT_INTERFACE, dev, part); |
be354c1a | 105 | goto err_env_relocate; |
57210c7c MS |
106 | } |
107 | ||
43ba3c59 | 108 | err = file_fat_read(CONFIG_ENV_FAT_FILE, buf, CONFIG_ENV_SIZE); |
9aa90c1d | 109 | if (err == -1) { |
d0816da5 MR |
110 | /* |
111 | * This printf is embedded in the messages from env_save that | |
112 | * will calling it. The missing \n is intentional. | |
113 | */ | |
114 | printf("Unable to read \"%s\" from %s%d:%d... ", | |
43ba3c59 | 115 | CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part); |
be354c1a | 116 | goto err_env_relocate; |
57210c7c MS |
117 | } |
118 | ||
2166ebf7 | 119 | return env_import(buf, 1); |
be354c1a WJ |
120 | |
121 | err_env_relocate: | |
0ac7d722 | 122 | env_set_default(NULL, 0); |
c5951991 SG |
123 | |
124 | return -EIO; | |
57210c7c | 125 | } |
4415f1d1 SG |
126 | #endif /* LOADENV */ |
127 | ||
128 | U_BOOT_ENV_LOCATION(fat) = { | |
129 | .location = ENVL_FAT, | |
ac358beb | 130 | ENV_NAME("FAT") |
4415f1d1 | 131 | #ifdef LOADENV |
e5bce247 | 132 | .load = env_fat_load, |
4415f1d1 | 133 | #endif |
3908bc93 | 134 | .save = ENV_SAVE_PTR(env_fat_save), |
4415f1d1 | 135 | }; |