]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * (c) Copyright 2016 by VRT Technology | |
3 | * | |
4 | * Author: | |
5 | * Stuart Longland <stuartl@vrt.com.au> | |
6 | * | |
7 | * Based on FAT environment driver | |
8 | * (c) Copyright 2011 by Tigris Elektronik GmbH | |
9 | * | |
10 | * Author: | |
11 | * Maximilian Schwerin <mvs@tigris.de> | |
12 | * | |
13 | * and EXT4 filesystem implementation | |
14 | * (C) Copyright 2011 - 2012 Samsung Electronics | |
15 | * EXT4 filesystem implementation in Uboot by | |
16 | * Uma Shankar <uma.shankar@samsung.com> | |
17 | * Manjunatha C Achar <a.manjunatha@samsung.com> | |
18 | * | |
19 | * SPDX-License-Identifier: GPL-2.0+ | |
20 | */ | |
21 | ||
22 | #include <common.h> | |
23 | ||
24 | #include <command.h> | |
25 | #include <environment.h> | |
26 | #include <linux/stddef.h> | |
27 | #include <malloc.h> | |
28 | #include <memalign.h> | |
29 | #include <search.h> | |
30 | #include <errno.h> | |
31 | #include <ext4fs.h> | |
32 | #include <mmc.h> | |
33 | ||
34 | DECLARE_GLOBAL_DATA_PTR; | |
35 | ||
36 | #ifdef CONFIG_CMD_SAVEENV | |
37 | static int env_ext4_save(void) | |
38 | { | |
39 | env_t env_new; | |
40 | struct blk_desc *dev_desc = NULL; | |
41 | disk_partition_t info; | |
42 | int dev, part; | |
43 | int err; | |
44 | ||
45 | err = env_export(&env_new); | |
46 | if (err) | |
47 | return err; | |
48 | ||
49 | part = blk_get_device_part_str(EXT4_ENV_INTERFACE, | |
50 | EXT4_ENV_DEVICE_AND_PART, | |
51 | &dev_desc, &info, 1); | |
52 | if (part < 0) | |
53 | return 1; | |
54 | ||
55 | dev = dev_desc->devnum; | |
56 | ext4fs_set_blk_dev(dev_desc, &info); | |
57 | ||
58 | if (!ext4fs_mount(info.size)) { | |
59 | printf("\n** Unable to use %s %s for saveenv **\n", | |
60 | EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART); | |
61 | return 1; | |
62 | } | |
63 | ||
64 | err = ext4fs_write(EXT4_ENV_FILE, (void *)&env_new, sizeof(env_t)); | |
65 | ext4fs_close(); | |
66 | ||
67 | if (err == -1) { | |
68 | printf("\n** Unable to write \"%s\" from %s%d:%d **\n", | |
69 | EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part); | |
70 | return 1; | |
71 | } | |
72 | ||
73 | puts("done\n"); | |
74 | return 0; | |
75 | } | |
76 | #endif /* CONFIG_CMD_SAVEENV */ | |
77 | ||
78 | static int env_ext4_load(void) | |
79 | { | |
80 | ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE); | |
81 | struct blk_desc *dev_desc = NULL; | |
82 | disk_partition_t info; | |
83 | int dev, part; | |
84 | int err; | |
85 | loff_t off; | |
86 | ||
87 | part = blk_get_device_part_str(EXT4_ENV_INTERFACE, | |
88 | EXT4_ENV_DEVICE_AND_PART, | |
89 | &dev_desc, &info, 1); | |
90 | if (part < 0) | |
91 | goto err_env_relocate; | |
92 | ||
93 | dev = dev_desc->devnum; | |
94 | ext4fs_set_blk_dev(dev_desc, &info); | |
95 | ||
96 | if (!ext4fs_mount(info.size)) { | |
97 | printf("\n** Unable to use %s %s for loading the env **\n", | |
98 | EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART); | |
99 | goto err_env_relocate; | |
100 | } | |
101 | ||
102 | err = ext4_read_file(EXT4_ENV_FILE, buf, 0, CONFIG_ENV_SIZE, &off); | |
103 | ext4fs_close(); | |
104 | ||
105 | if (err == -1) { | |
106 | printf("\n** Unable to read \"%s\" from %s%d:%d **\n", | |
107 | EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part); | |
108 | goto err_env_relocate; | |
109 | } | |
110 | ||
111 | env_import(buf, 1); | |
112 | return 0; | |
113 | ||
114 | err_env_relocate: | |
115 | set_default_env(NULL); | |
116 | ||
117 | return -EIO; | |
118 | } | |
119 | ||
120 | U_BOOT_ENV_LOCATION(ext4) = { | |
121 | .location = ENVL_EXT4, | |
122 | ENV_NAME("EXT4") | |
123 | .load = env_ext4_load, | |
124 | .save = env_save_ptr(env_ext4_save), | |
125 | }; |