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/*
* (c) Copyright 2011 by Tigris Elektronik GmbH
*
* Author:
* Maximilian Schwerin <mvs@tigris.de>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <command.h>
#include <environment.h>
#include <linux/stddef.h>
#include <malloc.h>
#include <memalign.h>
#include <search.h>
#include <errno.h>
#include <fat.h>
#include <mmc.h>
char *env_name_spec = "FAT";
env_t *env_ptr;
DECLARE_GLOBAL_DATA_PTR;
int env_init(void)
{
/* use default */
gd->env_addr = (ulong)&default_environment[0];
gd->env_valid = ENV_VALID;
return 0;
}
#ifdef CONFIG_CMD_SAVEENV
int saveenv(void)
{
env_t env_new;
struct blk_desc *dev_desc = NULL;
disk_partition_t info;
int dev, part;
int err;
loff_t size;
err = env_export(&env_new);
if (err)
return err;
part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE,
CONFIG_ENV_FAT_DEVICE_AND_PART,
&dev_desc, &info, 1);
if (part < 0)
return 1;
dev = dev_desc->devnum;
if (fat_set_blk_dev(dev_desc, &info) != 0) {
printf("\n** Unable to use %s %d:%d for saveenv **\n",
CONFIG_ENV_FAT_INTERFACE, dev, part);
return 1;
}
err = file_fat_write(CONFIG_ENV_FAT_FILE, (void *)&env_new, 0, sizeof(env_t),
&size);
if (err == -1) {
printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part);
return 1;
}
puts("done\n");
return 0;
}
#endif /* CONFIG_CMD_SAVEENV */
void env_relocate_spec(void)
{
ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
struct blk_desc *dev_desc = NULL;
disk_partition_t info;
int dev, part;
int err;
part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE,
CONFIG_ENV_FAT_DEVICE_AND_PART,
&dev_desc, &info, 1);
if (part < 0)
goto err_env_relocate;
dev = dev_desc->devnum;
if (fat_set_blk_dev(dev_desc, &info) != 0) {
printf("\n** Unable to use %s %d:%d for loading the env **\n",
CONFIG_ENV_FAT_INTERFACE, dev, part);
goto err_env_relocate;
}
err = file_fat_read(CONFIG_ENV_FAT_FILE, buf, CONFIG_ENV_SIZE);
if (err == -1) {
printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part);
goto err_env_relocate;
}
env_import(buf, 1);
return;
err_env_relocate:
set_default_env(NULL);
}
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