[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.
 *
 * 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;
};

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_ext_load(cmd_tbl_t *cmdtp, int flag, int argc,
					char *const argv[]);
int do_ext_ls(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	*
	18	* This program is free software; you can redistribute it and/or modify
	19	* it under the terms of the GNU General Public License as published by
	20	* the Free Software Foundation; either version 2 of the License, or
	21	* (at your option) any later version.
	22	*
	23	* This program is distributed in the hope that it will be useful,
	24	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	25	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	26	* GNU General Public License for more details.
	27	*
	28	* You should have received a copy of the GNU General Public License
	29	* along with this program; if not, write to the Free Software
	30	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	31	*/
	32
	33	#ifndef __EXT_COMMON__
	34	#define __EXT_COMMON__
	35	#include <command.h>
	36	#define SECTOR_SIZE 0x200
	37	#define SECTOR_BITS 9
	38
	39	/* Magic value used to identify an ext2 filesystem. */
	40	#define EXT2_MAGIC 0xEF53
	41	/* Amount of indirect blocks in an inode. */
	42	#define INDIRECT_BLOCKS 12
	43	/* Maximum lenght of a pathname. */
	44	#define EXT2_PATH_MAX 4096
	45	/* Maximum nesting of symlinks, used to prevent a loop. */
	46	#define EXT2_MAX_SYMLINKCNT 8
	47
	48	/* Filetype used in directory entry. */
	49	#define FILETYPE_UNKNOWN 0
	50	#define FILETYPE_REG 1
	51	#define FILETYPE_DIRECTORY 2
	52	#define FILETYPE_SYMLINK 7
	53
	54	/* Filetype information as used in inodes. */
	55	#define FILETYPE_INO_MASK 0170000
	56	#define FILETYPE_INO_REG 0100000
	57	#define FILETYPE_INO_DIRECTORY 0040000
	58	#define FILETYPE_INO_SYMLINK 0120000
	59	#define EXT2_ROOT_INO 2 /* Root inode */
	60
	61	/* Bits used as offset in sector */
	62	#define DISK_SECTOR_BITS 9
	63	/* The size of an ext2 block in bytes. */
	64	#define EXT2_BLOCK_SIZE(data) (1 << LOG2_BLOCK_SIZE(data))
65
66	/* Log2 size of ext2 block in 512 blocks. */
67	#define LOG2_EXT2_BLOCK_SIZE(data) (__le32_to_cpu \
68	(data->sblock.log2_block_size) + 1)
69
70	/* Log2 size of ext2 block in bytes. */
71	#define LOG2_BLOCK_SIZE(data) (__le32_to_cpu \
72	(data->sblock.log2_block_size) + 10)
73	#define INODE_SIZE_FILESYSTEM(data) (__le32_to_cpu \
74	(data->sblock.inode_size))
75
76	#define EXT2_FT_DIR 2
77	#define SUCCESS 1
78
79	/* Macro-instructions used to manage several block sizes */
80	#define EXT2_MIN_BLOCK_LOG_SIZE 10 /* 1024 */
81	#define EXT2_MAX_BLOCK_LOG_SIZE 16 /* 65536 */
82	#define EXT2_MIN_BLOCK_SIZE (1 << EXT2_MIN_BLOCK_LOG_SIZE)
83	#define EXT2_MAX_BLOCK_SIZE (1 << EXT2_MAX_BLOCK_LOG_SIZE)
84
85	/* The ext2 superblock. */
86	struct ext2_sblock {
87	uint32_t total_inodes;
88	uint32_t total_blocks;
89	uint32_t reserved_blocks;
90	uint32_t free_blocks;
91	uint32_t free_inodes;
92	uint32_t first_data_block;
93	uint32_t log2_block_size;
94	uint32_t log2_fragment_size;
95	uint32_t blocks_per_group;
96	uint32_t fragments_per_group;
97	uint32_t inodes_per_group;
98	uint32_t mtime;
99	uint32_t utime;
100	uint16_t mnt_count;
101	uint16_t max_mnt_count;
102	uint16_t magic;
103	uint16_t fs_state;
104	uint16_t error_handling;
105	uint16_t minor_revision_level;
106	uint32_t lastcheck;
107	uint32_t checkinterval;
108	uint32_t creator_os;
109	uint32_t revision_level;
110	uint16_t uid_reserved;
111	uint16_t gid_reserved;
112	uint32_t first_inode;
113	uint16_t inode_size;
114	uint16_t block_group_number;
115	uint32_t feature_compatibility;
116	uint32_t feature_incompat;
117	uint32_t feature_ro_compat;
118	uint32_t unique_id[4];
119	char volume_name[16];
120	char last_mounted_on[64];
121	uint32_t compression_info;
122	};
123
124	struct ext2_block_group {
125	__u32 block_id; /* Blocks bitmap block */
126	__u32 inode_id; /* Inodes bitmap block */
127	__u32 inode_table_id; /* Inodes table block */
128	__u16 free_blocks; /* Free blocks count */
129	__u16 free_inodes; /* Free inodes count */
130	__u16 used_dir_cnt; /* Directories count */
131	__u16 bg_flags;
132	__u32 bg_reserved[2];
133	__u16 bg_itable_unused; /* Unused inodes count */
134	__u16 bg_checksum; /* crc16(s_uuid+grouo_num+group_desc)*/
135	};
136
137	/* The ext2 inode. */
138	struct ext2_inode {
139	uint16_t mode;
140	uint16_t uid;
141	uint32_t size;
142	uint32_t atime;
143	uint32_t ctime;
144	uint32_t mtime;
145	uint32_t dtime;
146	uint16_t gid;
147	uint16_t nlinks;
148	uint32_t blockcnt; /* Blocks of 512 bytes!! */
149	uint32_t flags;
150	uint32_t osd1;
151	union {
152	struct datablocks {
153	uint32_t dir_blocks[INDIRECT_BLOCKS];
154	uint32_t indir_block;
155	uint32_t double_indir_block;
156	uint32_t triple_indir_block;
157	} blocks;
158	char symlink[60];
159	} b;
160	uint32_t version;
161	uint32_t acl;
162	uint32_t dir_acl;
163	uint32_t fragment_addr;
164	uint32_t osd2[3];
165	};
166
167	/* The header of an ext2 directory entry. */
168	struct ext2_dirent {
169	uint32_t inode;
170	uint16_t direntlen;
171	uint8_t namelen;
172	uint8_t filetype;
173	};
174
175	struct ext2fs_node {
176	struct ext2_data *data;
177	struct ext2_inode inode;
178	int ino;
179	int inode_read;
180	};
181
182	/* Information about a "mounted" ext2 filesystem. */
183	struct ext2_data {
184	struct ext2_sblock sblock;
185	struct ext2_inode *inode;
186	struct ext2fs_node diropen;
187	};
188
189	int do_ext2ls(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
190	int do_ext2load(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
191	int do_ext4_load(cmd_tbl_t *cmdtp, int flag, int argc,
192	char *const argv[]);
193	int do_ext4_ls(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
194	int do_ext_load(cmd_tbl_t *cmdtp, int flag, int argc,
195	char *const argv[]);
196	int do_ext_ls(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
197	#endif