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>
33 char *env_name_spec = "EXT4";
37 DECLARE_GLOBAL_DATA_PTR;
42 gd->env_addr = (ulong)&default_environment[0];
48 #ifdef CONFIG_CMD_SAVEENV
52 block_dev_desc_t *dev_desc = NULL;
53 disk_partition_t info;
57 err = env_export(&env_new);
61 part = get_device_and_partition(EXT4_ENV_INTERFACE,
62 EXT4_ENV_DEVICE_AND_PART,
68 ext4fs_set_blk_dev(dev_desc, &info);
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);
76 err = ext4fs_write(EXT4_ENV_FILE, (void *)&env_new, sizeof(env_t));
80 printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
81 EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
88 #endif /* CONFIG_CMD_SAVEENV */
90 void env_relocate_spec(void)
92 ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
93 block_dev_desc_t *dev_desc = NULL;
94 disk_partition_t info;
98 part = get_device_and_partition(EXT4_ENV_INTERFACE,
99 EXT4_ENV_DEVICE_AND_PART,
100 &dev_desc, &info, 1);
102 goto err_env_relocate;
105 ext4fs_set_blk_dev(dev_desc, &info);
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;
113 err = ext4_read_file(EXT4_ENV_FILE, buf, 0, CONFIG_ENV_SIZE);
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;
126 set_default_env(NULL);