2 * (c) Copyright 2011 by Tigris Elektronik GmbH
5 * Maximilian Schwerin <mvs@tigris.de>
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 #include <environment.h>
30 #include <linux/stddef.h>
37 char *env_name_spec = "FAT";
40 static char env_buf[CONFIG_ENV_SIZE];
42 DECLARE_GLOBAL_DATA_PTR;
47 gd->env_addr = (ulong)&default_environment[0];
53 #ifdef CONFIG_CMD_SAVEENV
56 env_t *env_new = env_buf;
59 block_dev_desc_t *dev_desc = NULL;
60 int dev = FAT_ENV_DEVICE;
61 int part = FAT_ENV_PART;
64 res = (char *)env_new->data;
65 len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
67 error("Cannot export environment: errno = %d\n", errno);
72 if (strcmp(FAT_ENV_INTERFACE, "mmc") == 0) {
73 struct mmc *mmc = find_mmc_device(dev);
76 printf("no mmc device at slot %x\n", dev);
83 #endif /* CONFIG_MMC */
85 dev_desc = get_dev(FAT_ENV_INTERFACE, dev);
86 if (dev_desc == NULL) {
87 printf("Failed to find %s%d\n",
88 FAT_ENV_INTERFACE, dev);
92 err = fat_register_device(dev_desc, part);
94 printf("Failed to register %s%d:%d\n",
95 FAT_ENV_INTERFACE, dev, part);
99 env_new->crc = crc32(0, env_new->data, ENV_SIZE);
100 err = file_fat_write(FAT_ENV_FILE, (void *)env_new, sizeof(env_t));
102 printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
103 FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
110 #endif /* CONFIG_CMD_SAVEENV */
112 void env_relocate_spec(void)
115 block_dev_desc_t *dev_desc = NULL;
116 int dev = FAT_ENV_DEVICE;
117 int part = FAT_ENV_PART;
121 if (strcmp(FAT_ENV_INTERFACE, "mmc") == 0) {
122 struct mmc *mmc = find_mmc_device(dev);
125 printf("no mmc device at slot %x\n", dev);
126 set_default_env(NULL);
133 #endif /* CONFIG_MMC */
135 dev_desc = get_dev(FAT_ENV_INTERFACE, dev);
136 if (dev_desc == NULL) {
137 printf("Failed to find %s%d\n",
138 FAT_ENV_INTERFACE, dev);
139 set_default_env(NULL);
143 err = fat_register_device(dev_desc, part);
145 printf("Failed to register %s%d:%d\n",
146 FAT_ENV_INTERFACE, dev, part);
147 set_default_env(NULL);
151 err = file_fat_read(FAT_ENV_FILE, (uchar *)&buf, CONFIG_ENV_SIZE);
153 printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
154 FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
155 set_default_env(NULL);