mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-05 20:54:31 +00:00
045fa1e114
Implement "ls" and "fsload" commands that act like {fat,ext2}{ls,load},
and transparently handle either file-system. This scheme could easily be
extended to other filesystem types; I only didn't do it for zfs because
I don't have any filesystems of that type to test with.
Replace the implementation of {fat,ext[24]}{ls,load} with this new code
too.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
198 lines
5.6 KiB
C
198 lines
5.6 KiB
C
/*
|
|
* (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>
|
|
*
|
|
* Data structures and headers for ext4 support have been taken from
|
|
* ext2 ls load support in Uboot
|
|
*
|
|
* (C) Copyright 2004
|
|
* esd gmbh <www.esd-electronics.com>
|
|
* Reinhard Arlt <reinhard.arlt@esd-electronics.com>
|
|
*
|
|
* based on code from grub2 fs/ext2.c and fs/fshelp.c by
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
|
|
*
|
|
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#ifndef __EXT_COMMON__
|
|
#define __EXT_COMMON__
|
|
#include <command.h>
|
|
#define SECTOR_SIZE 0x200
|
|
#define SECTOR_BITS 9
|
|
|
|
/* Magic value used to identify an ext2 filesystem. */
|
|
#define EXT2_MAGIC 0xEF53
|
|
/* Amount of indirect blocks in an inode. */
|
|
#define INDIRECT_BLOCKS 12
|
|
/* Maximum lenght of a pathname. */
|
|
#define EXT2_PATH_MAX 4096
|
|
/* Maximum nesting of symlinks, used to prevent a loop. */
|
|
#define EXT2_MAX_SYMLINKCNT 8
|
|
|
|
/* Filetype used in directory entry. */
|
|
#define FILETYPE_UNKNOWN 0
|
|
#define FILETYPE_REG 1
|
|
#define FILETYPE_DIRECTORY 2
|
|
#define FILETYPE_SYMLINK 7
|
|
|
|
/* Filetype information as used in inodes. */
|
|
#define FILETYPE_INO_MASK 0170000
|
|
#define FILETYPE_INO_REG 0100000
|
|
#define FILETYPE_INO_DIRECTORY 0040000
|
|
#define FILETYPE_INO_SYMLINK 0120000
|
|
#define EXT2_ROOT_INO 2 /* Root inode */
|
|
|
|
/* Bits used as offset in sector */
|
|
#define DISK_SECTOR_BITS 9
|
|
/* The size of an ext2 block in bytes. */
|
|
#define EXT2_BLOCK_SIZE(data) (1 << LOG2_BLOCK_SIZE(data))
|
|
|
|
/* Log2 size of ext2 block in 512 blocks. */
|
|
#define LOG2_EXT2_BLOCK_SIZE(data) (__le32_to_cpu \
|
|
(data->sblock.log2_block_size) + 1)
|
|
|
|
/* Log2 size of ext2 block in bytes. */
|
|
#define LOG2_BLOCK_SIZE(data) (__le32_to_cpu \
|
|
(data->sblock.log2_block_size) + 10)
|
|
#define INODE_SIZE_FILESYSTEM(data) (__le32_to_cpu \
|
|
(data->sblock.inode_size))
|
|
|
|
#define EXT2_FT_DIR 2
|
|
#define SUCCESS 1
|
|
|
|
/* Macro-instructions used to manage several block sizes */
|
|
#define EXT2_MIN_BLOCK_LOG_SIZE 10 /* 1024 */
|
|
#define EXT2_MAX_BLOCK_LOG_SIZE 16 /* 65536 */
|
|
#define EXT2_MIN_BLOCK_SIZE (1 << EXT2_MIN_BLOCK_LOG_SIZE)
|
|
#define EXT2_MAX_BLOCK_SIZE (1 << EXT2_MAX_BLOCK_LOG_SIZE)
|
|
|
|
/* The ext2 superblock. */
|
|
struct ext2_sblock {
|
|
uint32_t total_inodes;
|
|
uint32_t total_blocks;
|
|
uint32_t reserved_blocks;
|
|
uint32_t free_blocks;
|
|
uint32_t free_inodes;
|
|
uint32_t first_data_block;
|
|
uint32_t log2_block_size;
|
|
uint32_t log2_fragment_size;
|
|
uint32_t blocks_per_group;
|
|
uint32_t fragments_per_group;
|
|
uint32_t inodes_per_group;
|
|
uint32_t mtime;
|
|
uint32_t utime;
|
|
uint16_t mnt_count;
|
|
uint16_t max_mnt_count;
|
|
uint16_t magic;
|
|
uint16_t fs_state;
|
|
uint16_t error_handling;
|
|
uint16_t minor_revision_level;
|
|
uint32_t lastcheck;
|
|
uint32_t checkinterval;
|
|
uint32_t creator_os;
|
|
uint32_t revision_level;
|
|
uint16_t uid_reserved;
|
|
uint16_t gid_reserved;
|
|
uint32_t first_inode;
|
|
uint16_t inode_size;
|
|
uint16_t block_group_number;
|
|
uint32_t feature_compatibility;
|
|
uint32_t feature_incompat;
|
|
uint32_t feature_ro_compat;
|
|
uint32_t unique_id[4];
|
|
char volume_name[16];
|
|
char last_mounted_on[64];
|
|
uint32_t compression_info;
|
|
};
|
|
|
|
struct ext2_block_group {
|
|
__u32 block_id; /* Blocks bitmap block */
|
|
__u32 inode_id; /* Inodes bitmap block */
|
|
__u32 inode_table_id; /* Inodes table block */
|
|
__u16 free_blocks; /* Free blocks count */
|
|
__u16 free_inodes; /* Free inodes count */
|
|
__u16 used_dir_cnt; /* Directories count */
|
|
__u16 bg_flags;
|
|
__u32 bg_reserved[2];
|
|
__u16 bg_itable_unused; /* Unused inodes count */
|
|
__u16 bg_checksum; /* crc16(s_uuid+grouo_num+group_desc)*/
|
|
};
|
|
|
|
/* The ext2 inode. */
|
|
struct ext2_inode {
|
|
uint16_t mode;
|
|
uint16_t uid;
|
|
uint32_t size;
|
|
uint32_t atime;
|
|
uint32_t ctime;
|
|
uint32_t mtime;
|
|
uint32_t dtime;
|
|
uint16_t gid;
|
|
uint16_t nlinks;
|
|
uint32_t blockcnt; /* Blocks of 512 bytes!! */
|
|
uint32_t flags;
|
|
uint32_t osd1;
|
|
union {
|
|
struct datablocks {
|
|
uint32_t dir_blocks[INDIRECT_BLOCKS];
|
|
uint32_t indir_block;
|
|
uint32_t double_indir_block;
|
|
uint32_t triple_indir_block;
|
|
} blocks;
|
|
char symlink[60];
|
|
} b;
|
|
uint32_t version;
|
|
uint32_t acl;
|
|
uint32_t dir_acl;
|
|
uint32_t fragment_addr;
|
|
uint32_t osd2[3];
|
|
};
|
|
|
|
/* The header of an ext2 directory entry. */
|
|
struct ext2_dirent {
|
|
uint32_t inode;
|
|
uint16_t direntlen;
|
|
uint8_t namelen;
|
|
uint8_t filetype;
|
|
};
|
|
|
|
struct ext2fs_node {
|
|
struct ext2_data *data;
|
|
struct ext2_inode inode;
|
|
int ino;
|
|
int inode_read;
|
|
};
|
|
|
|
/* Information about a "mounted" ext2 filesystem. */
|
|
struct ext2_data {
|
|
struct ext2_sblock sblock;
|
|
struct ext2_inode *inode;
|
|
struct ext2fs_node diropen;
|
|
};
|
|
|
|
extern unsigned long part_offset;
|
|
|
|
int do_ext2ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
|
|
int do_ext2load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
|
|
int do_ext4_load(cmd_tbl_t *cmdtp, int flag, int argc,
|
|
char *const argv[]);
|
|
int do_ext4_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]);
|
|
int do_ext4_write(cmd_tbl_t *cmdtp, int flag, int argc,
|
|
char *const argv[]);
|
|
#endif
|