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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> | |
10 | ||
11 | #include <command.h> | |
0ac7d722 | 12 | #include <env.h> |
f3998fdc | 13 | #include <env_internal.h> |
57210c7c MS |
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 | |
4415f1d1 SG |
29 | #endif |
30 | ||
e5bce247 | 31 | static int env_fat_save(void) |
57210c7c | 32 | { |
cda87ec5 | 33 | env_t __aligned(ARCH_DMA_MINALIGN) env_new; |
4101f687 | 34 | struct blk_desc *dev_desc = NULL; |
be354c1a WJ |
35 | disk_partition_t info; |
36 | int dev, part; | |
9aa90c1d | 37 | int err; |
1ad0b98a | 38 | loff_t size; |
57210c7c | 39 | |
7ce1526e MV |
40 | err = env_export(&env_new); |
41 | if (err) | |
42 | return err; | |
57210c7c | 43 | |
43ba3c59 TR |
44 | part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE, |
45 | CONFIG_ENV_FAT_DEVICE_AND_PART, | |
be354c1a WJ |
46 | &dev_desc, &info, 1); |
47 | if (part < 0) | |
57210c7c | 48 | return 1; |
9aa90c1d | 49 | |
bcce53d0 | 50 | dev = dev_desc->devnum; |
be354c1a | 51 | if (fat_set_blk_dev(dev_desc, &info) != 0) { |
d0816da5 MR |
52 | /* |
53 | * This printf is embedded in the messages from env_save that | |
54 | * will calling it. The missing \n is intentional. | |
55 | */ | |
56 | printf("Unable to use %s %d:%d... ", | |
43ba3c59 | 57 | CONFIG_ENV_FAT_INTERFACE, dev, part); |
57210c7c MS |
58 | return 1; |
59 | } | |
60 | ||
43ba3c59 | 61 | err = file_fat_write(CONFIG_ENV_FAT_FILE, (void *)&env_new, 0, sizeof(env_t), |
1ad0b98a | 62 | &size); |
9aa90c1d | 63 | if (err == -1) { |
d0816da5 MR |
64 | /* |
65 | * This printf is embedded in the messages from env_save that | |
66 | * will calling it. The missing \n is intentional. | |
67 | */ | |
68 | printf("Unable to write \"%s\" from %s%d:%d... ", | |
43ba3c59 | 69 | CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part); |
57210c7c MS |
70 | return 1; |
71 | } | |
72 | ||
57210c7c MS |
73 | return 0; |
74 | } | |
57210c7c | 75 | |
4415f1d1 | 76 | #ifdef LOADENV |
c5951991 | 77 | static int env_fat_load(void) |
57210c7c | 78 | { |
6d1966e1 | 79 | ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE); |
4101f687 | 80 | struct blk_desc *dev_desc = NULL; |
be354c1a WJ |
81 | disk_partition_t info; |
82 | int dev, part; | |
9aa90c1d | 83 | int err; |
57210c7c | 84 | |
95058fbb | 85 | #ifdef CONFIG_MMC |
26862b4a FA |
86 | if (!strcmp(CONFIG_ENV_FAT_INTERFACE, "mmc")) |
87 | mmc_initialize(NULL); | |
95058fbb | 88 | #endif |
26862b4a | 89 | |
43ba3c59 TR |
90 | part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE, |
91 | CONFIG_ENV_FAT_DEVICE_AND_PART, | |
be354c1a WJ |
92 | &dev_desc, &info, 1); |
93 | if (part < 0) | |
94 | goto err_env_relocate; | |
95 | ||
bcce53d0 | 96 | dev = dev_desc->devnum; |
be354c1a | 97 | if (fat_set_blk_dev(dev_desc, &info) != 0) { |
d0816da5 MR |
98 | /* |
99 | * This printf is embedded in the messages from env_save that | |
100 | * will calling it. The missing \n is intentional. | |
101 | */ | |
102 | printf("Unable to use %s %d:%d... ", | |
43ba3c59 | 103 | CONFIG_ENV_FAT_INTERFACE, dev, part); |
be354c1a | 104 | goto err_env_relocate; |
57210c7c MS |
105 | } |
106 | ||
43ba3c59 | 107 | err = file_fat_read(CONFIG_ENV_FAT_FILE, buf, CONFIG_ENV_SIZE); |
9aa90c1d | 108 | if (err == -1) { |
d0816da5 MR |
109 | /* |
110 | * This printf is embedded in the messages from env_save that | |
111 | * will calling it. The missing \n is intentional. | |
112 | */ | |
113 | printf("Unable to read \"%s\" from %s%d:%d... ", | |
43ba3c59 | 114 | CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part); |
be354c1a | 115 | goto err_env_relocate; |
57210c7c MS |
116 | } |
117 | ||
2166ebf7 | 118 | return env_import(buf, 1); |
be354c1a WJ |
119 | |
120 | err_env_relocate: | |
0ac7d722 | 121 | env_set_default(NULL, 0); |
c5951991 SG |
122 | |
123 | return -EIO; | |
57210c7c | 124 | } |
4415f1d1 SG |
125 | #endif /* LOADENV */ |
126 | ||
127 | U_BOOT_ENV_LOCATION(fat) = { | |
128 | .location = ENVL_FAT, | |
ac358beb | 129 | ENV_NAME("FAT") |
4415f1d1 | 130 | #ifdef LOADENV |
e5bce247 | 131 | .load = env_fat_load, |
4415f1d1 | 132 | #endif |
3908bc93 | 133 | .save = ENV_SAVE_PTR(env_fat_save), |
4415f1d1 | 134 | }; |