blob: ce748ed8c7957c7e3009067c6b162e670189bcd9 [file] [log] [blame]
Stuart Longlandfd1000b2016-02-23 15:51:26 +10001/*
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 <search.h>
29#include <errno.h>
30#include <ext4fs.h>
31#include <mmc.h>
32
33char *env_name_spec = "EXT4";
34
35env_t *env_ptr;
36
37DECLARE_GLOBAL_DATA_PTR;
38
39int env_init(void)
40{
41 /* use default */
42 gd->env_addr = (ulong)&default_environment[0];
43 gd->env_valid = 1;
44
45 return 0;
46}
47
48#ifdef CONFIG_CMD_SAVEENV
49int saveenv(void)
50{
51 env_t env_new;
52 block_dev_desc_t *dev_desc = NULL;
53 disk_partition_t info;
54 int dev, part;
55 int err;
56
57 err = env_export(&env_new);
58 if (err)
59 return err;
60
61 part = get_device_and_partition(EXT4_ENV_INTERFACE,
62 EXT4_ENV_DEVICE_AND_PART,
63 &dev_desc, &info, 1);
64 if (part < 0)
65 return 1;
66
67 dev = dev_desc->dev;
68 ext4fs_set_blk_dev(dev_desc, &info);
69
70 if (!ext4fs_mount(info.size)) {
71 printf("\n** Unable to use %s %s for saveenv **\n",
72 EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
73 return 1;
74 }
75
76 err = ext4fs_write(EXT4_ENV_FILE, (void *)&env_new, sizeof(env_t));
77 ext4fs_close();
78
79 if (err == -1) {
80 printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
81 EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
82 return 1;
83 }
84
85 puts("done\n");
86 return 0;
87}
88#endif /* CONFIG_CMD_SAVEENV */
89
90void env_relocate_spec(void)
91{
92 ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
93 block_dev_desc_t *dev_desc = NULL;
94 disk_partition_t info;
95 int dev, part;
96 int err;
97
98 part = get_device_and_partition(EXT4_ENV_INTERFACE,
99 EXT4_ENV_DEVICE_AND_PART,
100 &dev_desc, &info, 1);
101 if (part < 0)
102 goto err_env_relocate;
103
104 dev = dev_desc->dev;
105 ext4fs_set_blk_dev(dev_desc, &info);
106
107 if (!ext4fs_mount(info.size)) {
108 printf("\n** Unable to use %s %s for loading the env **\n",
109 EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
110 goto err_env_relocate;
111 }
112
113 err = ext4_read_file(EXT4_ENV_FILE, buf, 0, CONFIG_ENV_SIZE);
114 ext4fs_close();
115
116 if (err == -1) {
117 printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
118 EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
119 goto err_env_relocate;
120 }
121
122 env_import(buf, 1);
123 return;
124
125err_env_relocate:
126 set_default_env(NULL);
127}