include/ext_common.h - u-boot - Git at Google

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

 #ifndef __EXT_COMMON__
 #define __EXT_COMMON__

 #include <compiler.h>

 struct cmd_tbl;

 #define SECTOR_SIZE		0x200
 #define LOG2_SECTOR_SIZE	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
 /* Maximum file name length */
 #define EXT2_NAME_LEN 255

 /*
  * Revision levels
  */
 #define EXT2_GOOD_OLD_REV	0	/* The good old (original) format */
 #define EXT2_DYNAMIC_REV	1	/* V2 format w/ dynamic inode sizes */

 #define EXT2_GOOD_OLD_INODE_SIZE 128

 /* 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 */
 #define EXT2_BOOT_LOADER_INO		5 /* Boot loader inode */

 /* First non-reserved inode for old ext2 filesystems */
 #define EXT2_GOOD_OLD_FIRST_INO	11

 /* 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;
 	uint8_t prealloc_blocks;
 	uint8_t prealloc_dir_blocks;
 	__le16 reserved_gdt_blocks;
 	uint8_t journal_uuid[16];
 	__le32 journal_inode;
 	__le32 journal_dev;
 	__le32 last_orphan;
 	__le32 hash_seed[4];
 	uint8_t default_hash_version;
 	uint8_t journal_backup_type;
 	__le16 descriptor_size;
 	__le32 default_mount_options;
 	__le32 first_meta_block_group;
 	__le32 mkfs_time;
 	__le32 journal_blocks[17];
 	__le32 total_blocks_high;
 	__le32 reserved_blocks_high;
 	__le32 free_blocks_high;
 	__le16 min_extra_inode_size;
 	__le16 want_extra_inode_size;
 	__le32 flags;
 	__le16 raid_stride;
 	__le16 mmp_interval;
 	__le64 mmp_block;
 	__le32 raid_stripe_width;
 	uint8_t log2_groups_per_flex;
 	uint8_t checksum_type;
 };

 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_exclude_bitmap;
 	__le16 bg_block_id_csum;
 	__le16 bg_inode_id_csum;
 	__le16 bg_itable_unused; /* Unused inodes count */
 	__le16 bg_checksum;	/* crc16(s_uuid+group_num+group_desc)*/
 	/* following fields only exist if descriptor size is 64 */
 	__le32 block_id_high;
 	__le32 inode_id_high;
 	__le32 inode_table_id_high;
 	__le16 free_blocks_high;
 	__le16 free_inodes_high;
 	__le16 used_dir_cnt_high;
 	__le16 bg_itable_unused_high;
 	__le32 bg_exclude_bitmap_high;
 	__le16 bg_block_id_csum_high;
 	__le16 bg_inode_id_csum_high;
 	__le32 bg_reserved;
 };

 /* 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 either 512 or block_size 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];
 		char inline_data[60];
 	} b;
 	__le32 version;
 	__le32 acl;
 	__le32 size_high;	/* previously dir_acl, but never used */
 	__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(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
 int do_ext2load(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
 int do_ext4_load(struct cmd_tbl *cmdtp, int flag, int argc,
 		 char *const argv[]);
 int do_ext4_ls(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
 int do_ext4_write(struct cmd_tbl *cmdtp, int flag, int argc,
 		  char *const argv[]);
 #endif
	/* SPDX-License-Identifier: GPL-2.0+ */
	/*
	* (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.
	*/

	#ifndef __EXT_COMMON__
	#define __EXT_COMMON__

	#include <compiler.h>

	struct cmd_tbl;

	#define SECTOR_SIZE 0x200
	#define LOG2_SECTOR_SIZE 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
	/* Maximum file name length */
	#define EXT2_NAME_LEN 255

	/*
	* Revision levels
	*/
	#define EXT2_GOOD_OLD_REV 0 /* The good old (original) format */
	#define EXT2_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */

	#define EXT2_GOOD_OLD_INODE_SIZE 128

	/* 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 */
	#define EXT2_BOOT_LOADER_INO 5 /* Boot loader inode */

	/* First non-reserved inode for old ext2 filesystems */
	#define EXT2_GOOD_OLD_FIRST_INO 11

	/* 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;
	uint8_t prealloc_blocks;
	uint8_t prealloc_dir_blocks;
	__le16 reserved_gdt_blocks;
	uint8_t journal_uuid[16];
	__le32 journal_inode;
	__le32 journal_dev;
	__le32 last_orphan;
	__le32 hash_seed[4];
	uint8_t default_hash_version;
	uint8_t journal_backup_type;
	__le16 descriptor_size;
	__le32 default_mount_options;
	__le32 first_meta_block_group;
	__le32 mkfs_time;
	__le32 journal_blocks[17];
	__le32 total_blocks_high;
	__le32 reserved_blocks_high;
	__le32 free_blocks_high;
	__le16 min_extra_inode_size;
	__le16 want_extra_inode_size;
	__le32 flags;
	__le16 raid_stride;
	__le16 mmp_interval;
	__le64 mmp_block;
	__le32 raid_stripe_width;
	uint8_t log2_groups_per_flex;
	uint8_t checksum_type;
	};

	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_exclude_bitmap;
	__le16 bg_block_id_csum;
	__le16 bg_inode_id_csum;
	__le16 bg_itable_unused; /* Unused inodes count */
	__le16 bg_checksum; /* crc16(s_uuid+group_num+group_desc)*/
	/* following fields only exist if descriptor size is 64 */
	__le32 block_id_high;
	__le32 inode_id_high;
	__le32 inode_table_id_high;
	__le16 free_blocks_high;
	__le16 free_inodes_high;
	__le16 used_dir_cnt_high;
	__le16 bg_itable_unused_high;
	__le32 bg_exclude_bitmap_high;
	__le16 bg_block_id_csum_high;
	__le16 bg_inode_id_csum_high;
	__le32 bg_reserved;
	};

	/* 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 either 512 or block_size 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];
	char inline_data[60];
	} b;
	__le32 version;
	__le32 acl;
	__le32 size_high; /* previously dir_acl, but never used */
	__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(struct cmd_tbl cmdtp, int flag, int argc, char const argv[]);
	int do_ext2load(struct cmd_tbl cmdtp, int flag, int argc, char const argv[]);
	int do_ext4_load(struct cmd_tbl *cmdtp, int flag, int argc,
	char *const argv[]);
	int do_ext4_ls(struct cmd_tbl cmdtp, int flag, int argc, char const argv[]);
	int do_ext4_write(struct cmd_tbl *cmdtp, int flag, int argc,
	char *const argv[]);
	#endif