1a1596438SUma Shankar /* 2a1596438SUma Shankar * (C) Copyright 2011 - 2012 Samsung Electronics 3a1596438SUma Shankar * EXT4 filesystem implementation in Uboot by 4a1596438SUma Shankar * Uma Shankar <uma.shankar@samsung.com> 5a1596438SUma Shankar * Manjunatha C Achar <a.manjunatha@samsung.com> 6a1596438SUma Shankar * 7a1596438SUma Shankar * ext4ls and ext4load : based on ext2 ls load support in Uboot. 8a1596438SUma Shankar * 9a1596438SUma Shankar * (C) Copyright 2004 10a1596438SUma Shankar * esd gmbh <www.esd-electronics.com> 11a1596438SUma Shankar * Reinhard Arlt <reinhard.arlt@esd-electronics.com> 12a1596438SUma Shankar * 13a1596438SUma Shankar * based on code from grub2 fs/ext2.c and fs/fshelp.c by 14a1596438SUma Shankar * GRUB -- GRand Unified Bootloader 15a1596438SUma Shankar * Copyright (C) 2003, 2004 Free Software Foundation, Inc. 16a1596438SUma Shankar * 17ed34f34dSUma Shankar * ext4write : Based on generic ext4 protocol. 18ed34f34dSUma Shankar * 191a459660SWolfgang Denk * SPDX-License-Identifier: GPL-2.0+ 20a1596438SUma Shankar */ 21a1596438SUma Shankar 22a1596438SUma Shankar #ifndef __EXT4_COMMON__ 23a1596438SUma Shankar #define __EXT4_COMMON__ 24a1596438SUma Shankar #include <ext_common.h> 25a1596438SUma Shankar #include <ext4fs.h> 26a1596438SUma Shankar #include <malloc.h> 27a1596438SUma Shankar #include <asm/errno.h> 2803e2ecf6SStephen Warren #if defined(CONFIG_EXT4_WRITE) 29ed34f34dSUma Shankar #include "ext4_journal.h" 30ed34f34dSUma Shankar #include "crc16.h" 31ed34f34dSUma Shankar #endif 32a1596438SUma Shankar 33a1596438SUma Shankar #define YES 1 34a1596438SUma Shankar #define NO 0 35a1596438SUma Shankar #define RECOVER 1 36a1596438SUma Shankar #define SCAN 0 37a1596438SUma Shankar 38a1596438SUma Shankar #define S_IFLNK 0120000 /* symbolic link */ 39a1596438SUma Shankar #define BLOCK_NO_ONE 1 4050ce4c07SEgbert Eich #define SUPERBLOCK_START (2 * 512) 41a1596438SUma Shankar #define SUPERBLOCK_SIZE 1024 42a1596438SUma Shankar #define F_FILE 1 43a1596438SUma Shankar 4455b523b7SStephen Warren static inline void *zalloc(size_t size) 4555b523b7SStephen Warren { 4655b523b7SStephen Warren void *p = memalign(ARCH_DMA_MINALIGN, size); 4755b523b7SStephen Warren memset(p, 0, size); 4855b523b7SStephen Warren return p; 4955b523b7SStephen Warren } 50a1596438SUma Shankar 51a1596438SUma Shankar int ext4fs_read_inode(struct ext2_data *data, int ino, 52a1596438SUma Shankar struct ext2_inode *inode); 539f12cd0eSSuriyan Ramasami int ext4fs_read_file(struct ext2fs_node *node, loff_t pos, loff_t len, 549f12cd0eSSuriyan Ramasami char *buf, loff_t *actread); 55a1596438SUma Shankar int ext4fs_find_file(const char *path, struct ext2fs_node *rootnode, 56a1596438SUma Shankar struct ext2fs_node **foundnode, int expecttype); 57a1596438SUma Shankar int ext4fs_iterate_dir(struct ext2fs_node *dir, char *name, 58a1596438SUma Shankar struct ext2fs_node **fnode, int *ftype); 59ed34f34dSUma Shankar 6003e2ecf6SStephen Warren #if defined(CONFIG_EXT4_WRITE) 61ed34f34dSUma Shankar uint32_t ext4fs_div_roundup(uint32_t size, uint32_t n); 6258a9ecbaSMichael Walle uint16_t ext4fs_checksum_update(unsigned int i); 63ed34f34dSUma Shankar int ext4fs_get_parent_inode_num(const char *dirname, char *dname, int flags); 64*a0d767e2SStefan Brüns int ext4fs_update_parent_dentry(char *filename, int file_type); 6558a9ecbaSMichael Walle uint32_t ext4fs_get_new_blk_no(void); 66ed34f34dSUma Shankar int ext4fs_get_new_inode_no(void); 67ed34f34dSUma Shankar void ext4fs_reset_block_bmap(long int blockno, unsigned char *buffer, 68ed34f34dSUma Shankar int index); 69ed34f34dSUma Shankar int ext4fs_set_block_bmap(long int blockno, unsigned char *buffer, int index); 70ed34f34dSUma Shankar int ext4fs_set_inode_bmap(int inode_no, unsigned char *buffer, int index); 71ed34f34dSUma Shankar void ext4fs_reset_inode_bmap(int inode_no, unsigned char *buffer, int index); 72ed34f34dSUma Shankar int ext4fs_iget(int inode_no, struct ext2_inode *inode); 73ed34f34dSUma Shankar void ext4fs_allocate_blocks(struct ext2_inode *file_inode, 74ed34f34dSUma Shankar unsigned int total_remaining_blocks, 75ed34f34dSUma Shankar unsigned int *total_no_of_block); 76ed34f34dSUma Shankar void put_ext4(uint64_t off, void *buf, uint32_t size); 77ed34f34dSUma Shankar #endif 78a1596438SUma Shankar #endif 79