]>
git.ipfire.org Git - people/ms/u-boot.git/blob - common/env_fat.c
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>
21 char *env_name_spec
= "FAT";
25 DECLARE_GLOBAL_DATA_PTR
;
30 gd
->env_addr
= (ulong
)&default_environment
[0];
36 #ifdef CONFIG_CMD_SAVEENV
42 block_dev_desc_t
*dev_desc
= NULL
;
43 int dev
= FAT_ENV_DEVICE
;
44 int part
= FAT_ENV_PART
;
47 res
= (char *)&env_new
.data
;
48 len
= hexport_r(&env_htab
, '\0', 0, &res
, ENV_SIZE
, 0, NULL
);
50 error("Cannot export environment: errno = %d\n", errno
);
55 if (strcmp(FAT_ENV_INTERFACE
, "mmc") == 0) {
56 struct mmc
*mmc
= find_mmc_device(dev
);
59 printf("no mmc device at slot %x\n", dev
);
66 #endif /* CONFIG_MMC */
68 dev_desc
= get_dev(FAT_ENV_INTERFACE
, dev
);
69 if (dev_desc
== NULL
) {
70 printf("Failed to find %s%d\n",
71 FAT_ENV_INTERFACE
, dev
);
75 err
= fat_register_device(dev_desc
, part
);
77 printf("Failed to register %s%d:%d\n",
78 FAT_ENV_INTERFACE
, dev
, part
);
82 env_new
.crc
= crc32(0, env_new
.data
, ENV_SIZE
);
83 err
= file_fat_write(FAT_ENV_FILE
, (void *)&env_new
, sizeof(env_t
));
85 printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
86 FAT_ENV_FILE
, FAT_ENV_INTERFACE
, dev
, part
);
93 #endif /* CONFIG_CMD_SAVEENV */
95 void env_relocate_spec(void)
97 char buf
[CONFIG_ENV_SIZE
];
98 block_dev_desc_t
*dev_desc
= NULL
;
99 int dev
= FAT_ENV_DEVICE
;
100 int part
= FAT_ENV_PART
;
104 if (strcmp(FAT_ENV_INTERFACE
, "mmc") == 0) {
105 struct mmc
*mmc
= find_mmc_device(dev
);
108 printf("no mmc device at slot %x\n", dev
);
109 set_default_env(NULL
);
116 #endif /* CONFIG_MMC */
118 dev_desc
= get_dev(FAT_ENV_INTERFACE
, dev
);
119 if (dev_desc
== NULL
) {
120 printf("Failed to find %s%d\n",
121 FAT_ENV_INTERFACE
, dev
);
122 set_default_env(NULL
);
126 err
= fat_register_device(dev_desc
, part
);
128 printf("Failed to register %s%d:%d\n",
129 FAT_ENV_INTERFACE
, dev
, part
);
130 set_default_env(NULL
);
134 err
= file_fat_read(FAT_ENV_FILE
, (uchar
*)&buf
, CONFIG_ENV_SIZE
);
136 printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
137 FAT_ENV_FILE
, FAT_ENV_INTERFACE
, dev
, part
);
138 set_default_env(NULL
);