]>
git.ipfire.org Git - people/ms/u-boot.git/blob - env/ext4.c
2 * (c) Copyright 2016 by VRT Technology
5 * Stuart Longland <stuartl@vrt.com.au>
7 * Based on FAT environment driver
8 * (c) Copyright 2011 by Tigris Elektronik GmbH
11 * Maximilian Schwerin <mvs@tigris.de>
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>
19 * SPDX-License-Identifier: GPL-2.0+
25 #include <environment.h>
26 #include <linux/stddef.h>
36 DECLARE_GLOBAL_DATA_PTR
;
38 #ifdef CONFIG_CMD_SAVEENV
39 static int env_ext4_save(void)
42 struct blk_desc
*dev_desc
= NULL
;
43 disk_partition_t info
;
47 err
= env_export(&env_new
);
51 part
= blk_get_device_part_str(EXT4_ENV_INTERFACE
,
52 EXT4_ENV_DEVICE_AND_PART
,
57 dev
= dev_desc
->devnum
;
58 ext4fs_set_blk_dev(dev_desc
, &info
);
60 if (!ext4fs_mount(info
.size
)) {
61 printf("\n** Unable to use %s %s for saveenv **\n",
62 EXT4_ENV_INTERFACE
, EXT4_ENV_DEVICE_AND_PART
);
66 err
= ext4fs_write(EXT4_ENV_FILE
, (void *)&env_new
, sizeof(env_t
));
70 printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
71 EXT4_ENV_FILE
, EXT4_ENV_INTERFACE
, dev
, part
);
78 #endif /* CONFIG_CMD_SAVEENV */
80 static void env_ext4_load(void)
82 ALLOC_CACHE_ALIGN_BUFFER(char, buf
, CONFIG_ENV_SIZE
);
83 struct blk_desc
*dev_desc
= NULL
;
84 disk_partition_t info
;
89 part
= blk_get_device_part_str(EXT4_ENV_INTERFACE
,
90 EXT4_ENV_DEVICE_AND_PART
,
93 goto err_env_relocate
;
95 dev
= dev_desc
->devnum
;
96 ext4fs_set_blk_dev(dev_desc
, &info
);
98 if (!ext4fs_mount(info
.size
)) {
99 printf("\n** Unable to use %s %s for loading the env **\n",
100 EXT4_ENV_INTERFACE
, EXT4_ENV_DEVICE_AND_PART
);
101 goto err_env_relocate
;
104 err
= ext4_read_file(EXT4_ENV_FILE
, buf
, 0, CONFIG_ENV_SIZE
, &off
);
108 printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
109 EXT4_ENV_FILE
, EXT4_ENV_INTERFACE
, dev
, part
);
110 goto err_env_relocate
;
117 set_default_env(NULL
);
120 U_BOOT_ENV_LOCATION(ext4
) = {
121 .location
= ENVL_EXT4
,
123 .load
= env_ext4_load
,
124 .save
= env_save_ptr(env_ext4_save
),