[people/ms/u-boot.git] / include / ext_common.h

/*
 * (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.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#ifndef __EXT_COMMON__
#define __EXT_COMMON__
#include <command.h>
#define SECTOR_SIZE		0x200

/* 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 */

/* The size of an ext2 block in bytes.  */
#define EXT2_BLOCK_SIZE(data)	   (1 << LOG2_BLOCK_SIZE(data))

/* Log2 size of ext2 block in bytes.  */
#define LOG2_BLOCK_SIZE(data)	   (le32_to_cpu		   \
				    (data->sblock.log2_block_size) \
				    + EXT2_MIN_BLOCK_LOG_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 {
	__le32 total_inodes;
	__le32 total_blocks;
	__le32 reserved_blocks;
	__le32 free_blocks;
	__le32 free_inodes;
	__le32 first_data_block;
	__le32 log2_block_size;
	__le32 log2_fragment_size;
	__le32 blocks_per_group;
	__le32 fragments_per_group;
	__le32 inodes_per_group;
	__le32 mtime;
	__le32 utime;
	__le16 mnt_count;
	__le16 max_mnt_count;
	__le16 magic;
	__le16 fs_state;
	__le16 error_handling;
	__le16 minor_revision_level;
	__le32 lastcheck;
	__le32 checkinterval;
	__le32 creator_os;
	__le32 revision_level;
	__le16 uid_reserved;
	__le16 gid_reserved;
	__le32 first_inode;
	__le16 inode_size;
	__le16 block_group_number;
	__le32 feature_compatibility;
	__le32 feature_incompat;
	__le32 feature_ro_compat;
	__le32 unique_id[4];
	char volume_name[16];
	char last_mounted_on[64];
	__le32 compression_info;
};

struct ext2_block_group {
	__le32 block_id;	/* Blocks bitmap block */
	__le32 inode_id;	/* Inodes bitmap block */
	__le32 inode_table_id;	/* Inodes table block */
	__le16 free_blocks;	/* Free blocks count */
	__le16 free_inodes;	/* Free inodes count */
	__le16 used_dir_cnt;	/* Directories count */
	__le16 bg_flags;
	__le32 bg_reserved[2];
	__le16 bg_itable_unused; /* Unused inodes count */
	__le16 bg_checksum;	/* crc16(s_uuid+grouo_num+group_desc)*/
};

/* The ext2 inode. */
struct ext2_inode {
	__le16 mode;
	__le16 uid;
	__le32 size;
	__le32 atime;
	__le32 ctime;
	__le32 mtime;
	__le32 dtime;
	__le16 gid;
	__le16 nlinks;
	__le32 blockcnt;	/* Blocks of 512 bytes!! */
	__le32 flags;
	__le32 osd1;
	union {
		struct datablocks {
			__le32 dir_blocks[INDIRECT_BLOCKS];
			__le32 indir_block;
			__le32 double_indir_block;
			__le32 triple_indir_block;
		} blocks;
		char symlink[60];
	} b;
	__le32 version;
	__le32 acl;
	__le32 dir_acl;
	__le32 fragment_addr;
	__le32 osd2[3];
};

/* The header of an ext2 directory entry. */
struct ext2_dirent {
	__le32 inode;
	__le16 direntlen;
	__u8 namelen;
	__u8 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 lbaint_t 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
Commit	Line	Data
a1596438 US	1	/*
	2	* (C) Copyright 2011 - 2012 Samsung Electronics
	3	* EXT4 filesystem implementation in Uboot by
	4	* Uma Shankar <uma.shankar@samsung.com>
	5	* Manjunatha C Achar <a.manjunatha@samsung.com>
	6	*
	7	* Data structures and headers for ext4 support have been taken from
	8	* ext2 ls load support in Uboot
	9	*
	10	* (C) Copyright 2004
	11	* esd gmbh <www.esd-electronics.com>
	12	* Reinhard Arlt <reinhard.arlt@esd-electronics.com>
	13	*
	14	* based on code from grub2 fs/ext2.c and fs/fshelp.c by
	15	* GRUB -- GRand Unified Bootloader
	16	* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
	17	*
1a459660	18	* SPDX-License-Identifier: GPL-2.0+
a1596438 US	19	*/
	20
	21	#ifndef __EXT_COMMON__
	22	#define __EXT_COMMON__
	23	#include <command.h>
	24	#define SECTOR_SIZE 0x200
a1596438 US	25
	26	/* Magic value used to identify an ext2 filesystem. */
	27	#define EXT2_MAGIC 0xEF53
	28	/* Amount of indirect blocks in an inode. */
	29	#define INDIRECT_BLOCKS 12
	30	/* Maximum lenght of a pathname. */
	31	#define EXT2_PATH_MAX 4096
	32	/* Maximum nesting of symlinks, used to prevent a loop. */
	33	#define EXT2_MAX_SYMLINKCNT 8
	34
	35	/* Filetype used in directory entry. */
	36	#define FILETYPE_UNKNOWN 0
	37	#define FILETYPE_REG 1
	38	#define FILETYPE_DIRECTORY 2
	39	#define FILETYPE_SYMLINK 7
	40
	41	/* Filetype information as used in inodes. */
	42	#define FILETYPE_INO_MASK 0170000
	43	#define FILETYPE_INO_REG 0100000
	44	#define FILETYPE_INO_DIRECTORY 0040000
	45	#define FILETYPE_INO_SYMLINK 0120000
	46	#define EXT2_ROOT_INO 2 /* Root inode */
	47
a1596438 US	48	/* The size of an ext2 block in bytes. */
	49	#define EXT2_BLOCK_SIZE(data) (1 << LOG2_BLOCK_SIZE(data))
	50
a1596438	51	/* Log2 size of ext2 block in bytes. */
7f101be3	52	#define LOG2_BLOCK_SIZE(data) (le32_to_cpu \
50ce4c07 EE	53	(data->sblock.log2_block_size) \
50ce4c07 EE	54	+ EXT2_MIN_BLOCK_LOG_SIZE)
a1596438 US	55
	56	#define EXT2_FT_DIR 2
	57	#define SUCCESS 1
	58
	59	/* Macro-instructions used to manage several block sizes */
	60	#define EXT2_MIN_BLOCK_LOG_SIZE 10 /* 1024 */
	61	#define EXT2_MAX_BLOCK_LOG_SIZE 16 /* 65536 */
	62	#define EXT2_MIN_BLOCK_SIZE (1 << EXT2_MIN_BLOCK_LOG_SIZE)
	63	#define EXT2_MAX_BLOCK_SIZE (1 << EXT2_MAX_BLOCK_LOG_SIZE)
	64
	65	/* The ext2 superblock. */
	66	struct ext2_sblock {
2a0b7a97 MW	67	__le32 total_inodes;
	68	__le32 total_blocks;
	69	__le32 reserved_blocks;
	70	__le32 free_blocks;
	71	__le32 free_inodes;
	72	__le32 first_data_block;
	73	__le32 log2_block_size;
	74	__le32 log2_fragment_size;
	75	__le32 blocks_per_group;
	76	__le32 fragments_per_group;
	77	__le32 inodes_per_group;
	78	__le32 mtime;
	79	__le32 utime;
	80	__le16 mnt_count;
	81	__le16 max_mnt_count;
	82	__le16 magic;
	83	__le16 fs_state;
	84	__le16 error_handling;
	85	__le16 minor_revision_level;
	86	__le32 lastcheck;
	87	__le32 checkinterval;
	88	__le32 creator_os;
	89	__le32 revision_level;
	90	__le16 uid_reserved;
	91	__le16 gid_reserved;
	92	__le32 first_inode;
	93	__le16 inode_size;
	94	__le16 block_group_number;
	95	__le32 feature_compatibility;
	96	__le32 feature_incompat;
	97	__le32 feature_ro_compat;
	98	__le32 unique_id[4];
a1596438 US	99	char volume_name[16];
a1596438 US	100	char last_mounted_on[64];
2a0b7a97	101	__le32 compression_info;
a1596438 US	102	};
	103
	104	struct ext2_block_group {
2a0b7a97 MW	105	__le32 block_id; /* Blocks bitmap block */
	106	__le32 inode_id; /* Inodes bitmap block */
	107	__le32 inode_table_id; /* Inodes table block */
	108	__le16 free_blocks; /* Free blocks count */
	109	__le16 free_inodes; /* Free inodes count */
	110	__le16 used_dir_cnt; /* Directories count */
	111	__le16 bg_flags;
	112	__le32 bg_reserved[2];
	113	__le16 bg_itable_unused; /* Unused inodes count */
	114	__le16 bg_checksum; /* crc16(s_uuid+grouo_num+group_desc)*/
a1596438 US	115	};
	116
	117	/* The ext2 inode. */
	118	struct ext2_inode {
2a0b7a97 MW	119	__le16 mode;
	120	__le16 uid;
	121	__le32 size;
	122	__le32 atime;
	123	__le32 ctime;
	124	__le32 mtime;
	125	__le32 dtime;
	126	__le16 gid;
	127	__le16 nlinks;
	128	__le32 blockcnt; /* Blocks of 512 bytes!! */
	129	__le32 flags;
	130	__le32 osd1;
a1596438 US	131	union {
a1596438 US	132	struct datablocks {
2a0b7a97 MW	133	__le32 dir_blocks[INDIRECT_BLOCKS];
	134	__le32 indir_block;
	135	__le32 double_indir_block;
	136	__le32 triple_indir_block;
a1596438 US	137	} blocks;
	138	char symlink[60];
	139	} b;
2a0b7a97 MW	140	__le32 version;
	141	__le32 acl;
	142	__le32 dir_acl;
	143	__le32 fragment_addr;
	144	__le32 osd2[3];
a1596438 US	145	};
	146
	147	/* The header of an ext2 directory entry. */
	148	struct ext2_dirent {
2a0b7a97 MW	149	__le32 inode;
	150	__le16 direntlen;
	151	__u8 namelen;
	152	__u8 filetype;
a1596438 US	153	};
	154
	155	struct ext2fs_node {
	156	struct ext2_data *data;
	157	struct ext2_inode inode;
	158	int ino;
	159	int inode_read;
	160	};
	161
	162	/* Information about a "mounted" ext2 filesystem. */
	163	struct ext2_data {
	164	struct ext2_sblock sblock;
	165	struct ext2_inode *inode;
	166	struct ext2fs_node diropen;
	167	};
	168
04735e9c	169	extern lbaint_t part_offset;
81180819	170
a1596438 US	171	int do_ext2ls(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
	172	int do_ext2load(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
	173	int do_ext4_load(cmd_tbl_t *cmdtp, int flag, int argc,
	174	char *const argv[]);
	175	int do_ext4_ls(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
ed34f34d US	176	int do_ext4_write(cmd_tbl_t *cmdtp, int flag, int argc,
ed34f34d US	177	char *const argv[]);
a1596438	178	#endif