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 25 /* 26 * Tell the fs layer which block device an partition to use for future 27 * commands. This also internally identifies the filesystem that is present 28 * within the partition. The identification process may be limited to a 29 * specific filesystem type by passing FS_* in the fstype parameter. 30 * 31 * Returns 0 on success. 32 * Returns non-zero if there is an error accessing the disk or partition, or 33 * no known filesystem type could be recognized on it. 34 */ 35 int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype); 36 37 /* 38 * Print the list of files on the partition previously set by fs_set_blk_dev(), 39 * in directory "dirname". 40 * 41 * Returns 0 on success. Returns non-zero on error. 42 */ 43 int fs_ls(const char *dirname); 44 45 /* 46 * Read file "filename" from the partition previously set by fs_set_blk_dev(), 47 * to address "addr", starting at byte offset "offset", and reading "len" 48 * bytes. "offset" may be 0 to read from the start of the file. "len" may be 49 * 0 to read the entire file. Note that not all filesystem types support 50 * either/both offset!=0 or len!=0. 51 * 52 * Returns number of bytes read on success. Returns <= 0 on error. 53 */ 54 int fs_read(const char *filename, ulong addr, int offset, int len); 55 56 /* 57 * Common implementation for various filesystem commands, optionally limited 58 * to a specific filesystem type via the fstype parameter. 59 */ 60 int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], 61 int fstype, int cmdline_base); 62 int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], 63 int fstype); 64 65 #endif /* _FS_H */ 66