2 * (c) Copyright 2011 by Tigris Elektronik GmbH
5 * Maximilian Schwerin <mvs@tigris.de>
7 * SPDX-License-Identifier: GPL-2.0+
13 #include <environment.h>
14 #include <linux/stddef.h>
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)
29 # if defined(CONFIG_CMD_SAVEENV)
36 DECLARE_GLOBAL_DATA_PTR;
39 static int env_fat_save(void)
42 struct blk_desc *dev_desc = NULL;
43 disk_partition_t info;
48 err = env_export(&env_new);
52 part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE,
53 CONFIG_ENV_FAT_DEVICE_AND_PART,
58 dev = dev_desc->devnum;
59 if (fat_set_blk_dev(dev_desc, &info) != 0) {
60 printf("\n** Unable to use %s %d:%d for saveenv **\n",
61 CONFIG_ENV_FAT_INTERFACE, dev, part);
65 err = file_fat_write(CONFIG_ENV_FAT_FILE, (void *)&env_new, 0, sizeof(env_t),
68 printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
69 CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part);
76 #endif /* CMD_SAVEENV */
79 static void env_fat_load(void)
81 ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
82 struct blk_desc *dev_desc = NULL;
83 disk_partition_t info;
87 part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE,
88 CONFIG_ENV_FAT_DEVICE_AND_PART,
91 goto err_env_relocate;
93 dev = dev_desc->devnum;
94 if (fat_set_blk_dev(dev_desc, &info) != 0) {
95 printf("\n** Unable to use %s %d:%d for loading the env **\n",
96 CONFIG_ENV_FAT_INTERFACE, dev, part);
97 goto err_env_relocate;
100 err = file_fat_read(CONFIG_ENV_FAT_FILE, buf, CONFIG_ENV_SIZE);
102 printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
103 CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part);
104 goto err_env_relocate;
111 set_default_env(NULL);
115 U_BOOT_ENV_LOCATION(fat) = {
116 .location = ENVL_FAT,
119 .load = env_fat_load,
122 .save = env_save_ptr(env_fat_save),