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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 <search.h>
#include <errno.h>
#include <ext4fs.h>
char *env_name_spec = "EXT4";
env_t *env_ptr;
DECLARE_GLOBAL_DATA_PTR;
int env_init(void)
{
/* use default */
gd->env_addr = (ulong)&default_environment[0];
gd->env_valid = 1;
return 0;
}
#ifdef CONFIG_CMD_SAVEENV
int saveenv(void)
{
env_t env_new;
ssize_t len;
char *res;
block_dev_desc_t *dev_desc = NULL;
int dev = EXT4_ENV_DEVICE;
int part = EXT4_ENV_PART;
int err;
res = (char *)&env_new.data;
len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
return 1;
}
dev_desc = get_dev(EXT4_ENV_INTERFACE, dev);
if (dev_desc == NULL) {
printf("Failed to find %s%d\n",
EXT4_ENV_INTERFACE, dev);
return 1;
}
err = ext4_register_device(dev_desc, part);
if (err) {
printf("Failed to register %s%d:%d\n",
EXT4_ENV_INTERFACE, dev, part);
return 1;
}
env_new.crc = crc32(0, env_new.data, ENV_SIZE);
err = ext4fs_write(EXT4_ENV_FILE, (void *)&env_new, sizeof(env_t));
ext4fs_close();
if (err == -1) {
printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
return 1;
}
puts("done\n");
return 0;
}
#endif /* CONFIG_CMD_SAVEENV */
void env_relocate_spec(void)
{
char buf[CONFIG_ENV_SIZE];
block_dev_desc_t *dev_desc = NULL;
int dev = EXT4_ENV_DEVICE;
int part = EXT4_ENV_PART;
int err;
dev_desc = get_dev(EXT4_ENV_INTERFACE, dev);
if (dev_desc == NULL) {
printf("Failed to find %s%d\n",
EXT4_ENV_INTERFACE, dev);
set_default_env(NULL);
return;
}
err = ext4_register_device(dev_desc, part);
if (err) {
printf("Failed to register %s%d:%d\n",
EXT4_ENV_INTERFACE, dev, part);
set_default_env(NULL);
return;
}
err = ext4_read_file(EXT4_ENV_FILE, (uchar *)&buf, 0, CONFIG_ENV_SIZE);
ext4fs_close();
if (err == -1) {
printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
set_default_env(NULL);
return;
}
env_import(buf, 1);
}
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