mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 07:34:31 +00:00
c595199194
The load() methods have inconsistent behaviour on error. Some of them load an empty default environment. Some load an environment containing an error message. Others do nothing. As a step in the right direction, have the method return an error code. Then the caller could handle this itself in a consistent way. Signed-off-by: Simon Glass <sjg@chromium.org>
125 lines
2.6 KiB
C
125 lines
2.6 KiB
C
/*
|
|
* (c) Copyright 2016 by VRT Technology
|
|
*
|
|
* Author:
|
|
* Stuart Longland <stuartl@vrt.com.au>
|
|
*
|
|
* Based on FAT environment driver
|
|
* (c) Copyright 2011 by Tigris Elektronik GmbH
|
|
*
|
|
* Author:
|
|
* Maximilian Schwerin <mvs@tigris.de>
|
|
*
|
|
* and EXT4 filesystem implementation
|
|
* (C) Copyright 2011 - 2012 Samsung Electronics
|
|
* EXT4 filesystem implementation in Uboot by
|
|
* Uma Shankar <uma.shankar@samsung.com>
|
|
* Manjunatha C Achar <a.manjunatha@samsung.com>
|
|
*
|
|
* 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 <ext4fs.h>
|
|
#include <mmc.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
#ifdef CONFIG_CMD_SAVEENV
|
|
static int env_ext4_save(void)
|
|
{
|
|
env_t env_new;
|
|
struct blk_desc *dev_desc = NULL;
|
|
disk_partition_t info;
|
|
int dev, part;
|
|
int err;
|
|
|
|
err = env_export(&env_new);
|
|
if (err)
|
|
return err;
|
|
|
|
part = blk_get_device_part_str(EXT4_ENV_INTERFACE,
|
|
EXT4_ENV_DEVICE_AND_PART,
|
|
&dev_desc, &info, 1);
|
|
if (part < 0)
|
|
return 1;
|
|
|
|
dev = dev_desc->devnum;
|
|
ext4fs_set_blk_dev(dev_desc, &info);
|
|
|
|
if (!ext4fs_mount(info.size)) {
|
|
printf("\n** Unable to use %s %s for saveenv **\n",
|
|
EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
|
|
return 1;
|
|
}
|
|
|
|
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 */
|
|
|
|
static int env_ext4_load(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;
|
|
loff_t off;
|
|
|
|
part = blk_get_device_part_str(EXT4_ENV_INTERFACE,
|
|
EXT4_ENV_DEVICE_AND_PART,
|
|
&dev_desc, &info, 1);
|
|
if (part < 0)
|
|
goto err_env_relocate;
|
|
|
|
dev = dev_desc->devnum;
|
|
ext4fs_set_blk_dev(dev_desc, &info);
|
|
|
|
if (!ext4fs_mount(info.size)) {
|
|
printf("\n** Unable to use %s %s for loading the env **\n",
|
|
EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
|
|
goto err_env_relocate;
|
|
}
|
|
|
|
err = ext4_read_file(EXT4_ENV_FILE, buf, 0, CONFIG_ENV_SIZE, &off);
|
|
ext4fs_close();
|
|
|
|
if (err == -1) {
|
|
printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
|
|
EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
|
|
goto err_env_relocate;
|
|
}
|
|
|
|
env_import(buf, 1);
|
|
return 0;
|
|
|
|
err_env_relocate:
|
|
set_default_env(NULL);
|
|
|
|
return -EIO;
|
|
}
|
|
|
|
U_BOOT_ENV_LOCATION(ext4) = {
|
|
.location = ENVL_EXT4,
|
|
ENV_NAME("EXT4")
|
|
.load = env_ext4_load,
|
|
.save = env_save_ptr(env_ext4_save),
|
|
};
|