mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-05 20:54:31 +00:00
57210c7cc3
The following must be defined: CONFIG_ENV_IS_IN_FAT Enable this saving environment to FAT. FAT_ENV_INTERFACE Interface the FAT resides on (e.g. mmc). FAT_ENV_DEVICE The interface device number (e.g. 0 for mmc0) FAT_ENV_PART The device part (e.g. 1 for mmc0:1) FAT_ENV_FILE The filename of the environment file. Author: Maximilian Schwerin <mvs@tigris.de> Removed dead DEBUG comment. Signed-off-by: Wolfgang Denk <wd@denx.de>
156 lines
3.5 KiB
C
156 lines
3.5 KiB
C
/*
|
|
* (c) Copyright 2011 by Tigris Elektronik GmbH
|
|
*
|
|
* Author:
|
|
* Maximilian Schwerin <mvs@tigris.de>
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
|
|
#include <command.h>
|
|
#include <environment.h>
|
|
#include <linux/stddef.h>
|
|
#include <malloc.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;
|
|
|
|
uchar env_get_char_spec(int index)
|
|
{
|
|
return *((uchar *)(gd->env_addr + index));
|
|
}
|
|
|
|
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 = FAT_ENV_DEVICE;
|
|
int part = FAT_ENV_PART;
|
|
|
|
res = (char *)&env_new.data;
|
|
len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
|
|
if (len < 0) {
|
|
error("Cannot export environment: errno = %d\n", errno);
|
|
return 1;
|
|
}
|
|
|
|
#ifdef CONFIG_MMC
|
|
if (strcmp (FAT_ENV_INTERFACE, "mmc") == 0) {
|
|
struct mmc *mmc = find_mmc_device(dev);
|
|
|
|
if (!mmc) {
|
|
printf("no mmc device at slot %x\n", dev);
|
|
return 1;
|
|
}
|
|
|
|
mmc->has_init = 0;
|
|
mmc_init(mmc);
|
|
}
|
|
#endif /* CONFIG_MMC */
|
|
|
|
dev_desc = get_dev(FAT_ENV_INTERFACE, dev);
|
|
if (dev_desc == NULL) {
|
|
printf("Failed to find %s%d\n",
|
|
FAT_ENV_INTERFACE, dev);
|
|
return 1;
|
|
}
|
|
if (fat_register_device(dev_desc, part) != 0) {
|
|
printf("Failed to register %s%d:%d\n",
|
|
FAT_ENV_INTERFACE, dev, part);
|
|
return 1;
|
|
}
|
|
|
|
env_new.crc = crc32(0, env_new.data, ENV_SIZE);
|
|
if (file_fat_write(FAT_ENV_FILE, (void *)&env_new, sizeof(env_t)) == -1) {
|
|
printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
|
|
FAT_ENV_FILE, FAT_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 = FAT_ENV_DEVICE;
|
|
int part = FAT_ENV_PART;
|
|
|
|
#ifdef CONFIG_MMC
|
|
if (strcmp (FAT_ENV_INTERFACE, "mmc") == 0) {
|
|
struct mmc *mmc = find_mmc_device(dev);
|
|
|
|
if (!mmc) {
|
|
printf("no mmc device at slot %x\n", dev);
|
|
set_default_env(NULL);
|
|
return;
|
|
}
|
|
|
|
mmc->has_init = 0;
|
|
mmc_init(mmc);
|
|
}
|
|
#endif /* CONFIG_MMC */
|
|
|
|
dev_desc = get_dev(FAT_ENV_INTERFACE, dev);
|
|
if (dev_desc == NULL) {
|
|
printf("Failed to find %s%d\n",
|
|
FAT_ENV_INTERFACE, dev);
|
|
set_default_env(NULL);
|
|
return;
|
|
}
|
|
if (fat_register_device(dev_desc, part) != 0) {
|
|
printf("Failed to register %s%d:%d\n",
|
|
FAT_ENV_INTERFACE, dev, part);
|
|
set_default_env(NULL);
|
|
return;
|
|
}
|
|
|
|
if (file_fat_read(FAT_ENV_FILE, (unsigned char *)&buf, CONFIG_ENV_SIZE) == -1) {
|
|
printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
|
|
FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
|
|
set_default_env(NULL);
|
|
return;
|
|
}
|
|
|
|
env_import(buf, 1);
|
|
}
|