forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
140 lines
3.1 KiB
140 lines
3.1 KiB
// SPDX-License-Identifier: GPL-2.0+ |
|
/* |
|
* (c) Copyright 2011 by Tigris Elektronik GmbH |
|
* |
|
* Author: |
|
* Maximilian Schwerin <[email protected]> |
|
*/ |
|
|
|
#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> |
|
|
|
#ifdef CONFIG_SPL_BUILD |
|
/* TODO([email protected]): Figure out why this is needed */ |
|
# if !defined(CONFIG_TARGET_AM335X_EVM) || defined(CONFIG_SPL_OS_BOOT) |
|
# define LOADENV |
|
# endif |
|
#else |
|
# define LOADENV |
|
# if defined(CONFIG_CMD_SAVEENV) |
|
# define CMD_SAVEENV |
|
# endif |
|
#endif |
|
|
|
#ifdef CMD_SAVEENV |
|
static int env_fat_save(void) |
|
{ |
|
env_t __aligned(ARCH_DMA_MINALIGN) 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) { |
|
/* |
|
* This printf is embedded in the messages from env_save that |
|
* will calling it. The missing \n is intentional. |
|
*/ |
|
printf("Unable to use %s %d:%d... ", |
|
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) { |
|
/* |
|
* This printf is embedded in the messages from env_save that |
|
* will calling it. The missing \n is intentional. |
|
*/ |
|
printf("Unable to write \"%s\" from %s%d:%d... ", |
|
CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part); |
|
return 1; |
|
} |
|
|
|
return 0; |
|
} |
|
#endif /* CMD_SAVEENV */ |
|
|
|
#ifdef LOADENV |
|
static int env_fat_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; |
|
|
|
#ifdef CONFIG_MMC |
|
if (!strcmp(CONFIG_ENV_FAT_INTERFACE, "mmc")) |
|
mmc_initialize(NULL); |
|
#endif |
|
|
|
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) { |
|
/* |
|
* This printf is embedded in the messages from env_save that |
|
* will calling it. The missing \n is intentional. |
|
*/ |
|
printf("Unable to use %s %d:%d... ", |
|
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) { |
|
/* |
|
* This printf is embedded in the messages from env_save that |
|
* will calling it. The missing \n is intentional. |
|
*/ |
|
printf("Unable to read \"%s\" from %s%d:%d... ", |
|
CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part); |
|
goto err_env_relocate; |
|
} |
|
|
|
return env_import(buf, 1); |
|
|
|
err_env_relocate: |
|
set_default_env(NULL, 0); |
|
|
|
return -EIO; |
|
} |
|
#endif /* LOADENV */ |
|
|
|
U_BOOT_ENV_LOCATION(fat) = { |
|
.location = ENVL_FAT, |
|
ENV_NAME("FAT") |
|
#ifdef LOADENV |
|
.load = env_fat_load, |
|
#endif |
|
#ifdef CMD_SAVEENV |
|
.save = env_save_ptr(env_fat_save), |
|
#endif |
|
};
|
|
|