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132 lines
2.8 KiB
132 lines
2.8 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* (c) Copyright 2016 by VRT Technology |
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* |
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* Author: |
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* Stuart Longland <[email protected]> |
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* |
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* Based on FAT environment driver |
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* (c) Copyright 2011 by Tigris Elektronik GmbH |
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* |
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* Author: |
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* Maximilian Schwerin <[email protected]> |
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* |
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* and EXT4 filesystem implementation |
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* (C) Copyright 2011 - 2012 Samsung Electronics |
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* EXT4 filesystem implementation in Uboot by |
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* Uma Shankar <[email protected]> |
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* Manjunatha C Achar <[email protected]> |
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*/ |
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#include <common.h> |
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#include <command.h> |
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#include <environment.h> |
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#include <linux/stddef.h> |
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#include <malloc.h> |
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#include <memalign.h> |
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#include <search.h> |
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#include <errno.h> |
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#include <ext4fs.h> |
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#include <mmc.h> |
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#ifdef CONFIG_CMD_SAVEENV |
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static int env_ext4_save(void) |
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{ |
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env_t env_new; |
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struct blk_desc *dev_desc = NULL; |
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disk_partition_t info; |
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int dev, part; |
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int err; |
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err = env_export(&env_new); |
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if (err) |
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return err; |
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part = blk_get_device_part_str(CONFIG_ENV_EXT4_INTERFACE, |
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CONFIG_ENV_EXT4_DEVICE_AND_PART, |
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&dev_desc, &info, 1); |
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if (part < 0) |
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return 1; |
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dev = dev_desc->devnum; |
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ext4fs_set_blk_dev(dev_desc, &info); |
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if (!ext4fs_mount(info.size)) { |
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printf("\n** Unable to use %s %s for saveenv **\n", |
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CONFIG_ENV_EXT4_INTERFACE, |
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CONFIG_ENV_EXT4_DEVICE_AND_PART); |
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return 1; |
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} |
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err = ext4fs_write(CONFIG_ENV_EXT4_FILE, (void *)&env_new, |
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sizeof(env_t)); |
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ext4fs_close(); |
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if (err == -1) { |
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printf("\n** Unable to write \"%s\" from %s%d:%d **\n", |
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CONFIG_ENV_EXT4_FILE, CONFIG_ENV_EXT4_INTERFACE, dev, |
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part); |
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return 1; |
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} |
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puts("done\n"); |
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return 0; |
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} |
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#endif /* CONFIG_CMD_SAVEENV */ |
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static int env_ext4_load(void) |
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{ |
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ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE); |
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struct blk_desc *dev_desc = NULL; |
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disk_partition_t info; |
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int dev, part; |
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int err; |
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loff_t off; |
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#ifdef CONFIG_MMC |
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if (!strcmp(CONFIG_ENV_EXT4_INTERFACE, "mmc")) |
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mmc_initialize(NULL); |
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#endif |
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part = blk_get_device_part_str(CONFIG_ENV_EXT4_INTERFACE, |
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CONFIG_ENV_EXT4_DEVICE_AND_PART, |
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&dev_desc, &info, 1); |
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if (part < 0) |
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goto err_env_relocate; |
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dev = dev_desc->devnum; |
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ext4fs_set_blk_dev(dev_desc, &info); |
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if (!ext4fs_mount(info.size)) { |
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printf("\n** Unable to use %s %s for loading the env **\n", |
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CONFIG_ENV_EXT4_INTERFACE, |
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CONFIG_ENV_EXT4_DEVICE_AND_PART); |
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goto err_env_relocate; |
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} |
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err = ext4_read_file(CONFIG_ENV_EXT4_FILE, buf, 0, CONFIG_ENV_SIZE, |
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&off); |
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ext4fs_close(); |
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if (err == -1) { |
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printf("\n** Unable to read \"%s\" from %s%d:%d **\n", |
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CONFIG_ENV_EXT4_FILE, CONFIG_ENV_EXT4_INTERFACE, dev, |
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part); |
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goto err_env_relocate; |
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} |
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return env_import(buf, 1); |
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err_env_relocate: |
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set_default_env(NULL, 0); |
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return -EIO; |
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} |
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U_BOOT_ENV_LOCATION(ext4) = { |
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.location = ENVL_EXT4, |
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ENV_NAME("EXT4") |
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.load = env_ext4_load, |
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.save = env_save_ptr(env_ext4_save), |
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};
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