1 /* 2 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms and conditions of the GNU General Public License, 6 * version 2, as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11 * more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 #ifndef _FS_H 17 #define _FS_H 18 19 #include <common.h> 20 21 #define FS_TYPE_ANY 0 22 #define FS_TYPE_FAT 1 23 #define FS_TYPE_EXT 2 24 #define FS_TYPE_SANDBOX 3 25 26 /* 27 * Tell the fs layer which block device an partition to use for future 28 * commands. This also internally identifies the filesystem that is present 29 * within the partition. The identification process may be limited to a 30 * specific filesystem type by passing FS_* in the fstype parameter. 31 * 32 * Returns 0 on success. 33 * Returns non-zero if there is an error accessing the disk or partition, or 34 * no known filesystem type could be recognized on it. 35 */ 36 int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype); 37 38 /* 39 * Print the list of files on the partition previously set by fs_set_blk_dev(), 40 * in directory "dirname". 41 * 42 * Returns 0 on success. Returns non-zero on error. 43 */ 44 int fs_ls(const char *dirname); 45 46 /* 47 * Read file "filename" from the partition previously set by fs_set_blk_dev(), 48 * to address "addr", starting at byte offset "offset", and reading "len" 49 * bytes. "offset" may be 0 to read from the start of the file. "len" may be 50 * 0 to read the entire file. Note that not all filesystem types support 51 * either/both offset!=0 or len!=0. 52 * 53 * Returns number of bytes read on success. Returns <= 0 on error. 54 */ 55 int fs_read(const char *filename, ulong addr, int offset, int len); 56 57 /* 58 * Common implementation for various filesystem commands, optionally limited 59 * to a specific filesystem type via the fstype parameter. 60 */ 61 int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], 62 int fstype); 63 int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], 64 int fstype); 65 int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], 66 int fstype); 67 68 #endif /* _FS_H */ 69