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 17 #include <config.h> 18 #include <common.h> 19 #include <part.h> 20 #include <ext4fs.h> 21 #include <fat.h> 22 #include <fs.h> 23 #include <sandboxfs.h> 24 #include <asm/io.h> 25 26 DECLARE_GLOBAL_DATA_PTR; 27 28 static block_dev_desc_t *fs_dev_desc; 29 static disk_partition_t fs_partition; 30 static int fs_type = FS_TYPE_ANY; 31 32 static inline int fs_probe_unsupported(block_dev_desc_t *fs_dev_desc, 33 disk_partition_t *fs_partition) 34 { 35 printf("** Unrecognized filesystem type **\n"); 36 return -1; 37 } 38 39 static inline int fs_ls_unsupported(const char *dirname) 40 { 41 return -1; 42 } 43 44 static inline int fs_read_unsupported(const char *filename, void *buf, 45 int offset, int len) 46 { 47 return -1; 48 } 49 50 static inline int fs_write_unsupported(const char *filename, void *buf, 51 int offset, int len) 52 { 53 return -1; 54 } 55 56 static inline void fs_close_unsupported(void) 57 { 58 } 59 60 struct fstype_info { 61 int fstype; 62 int (*probe)(block_dev_desc_t *fs_dev_desc, 63 disk_partition_t *fs_partition); 64 int (*ls)(const char *dirname); 65 int (*read)(const char *filename, void *buf, int offset, int len); 66 int (*write)(const char *filename, void *buf, int offset, int len); 67 void (*close)(void); 68 }; 69 70 static struct fstype_info fstypes[] = { 71 #ifdef CONFIG_FS_FAT 72 { 73 .fstype = FS_TYPE_FAT, 74 .probe = fat_set_blk_dev, 75 .close = fat_close, 76 .ls = file_fat_ls, 77 .read = fat_read_file, 78 }, 79 #endif 80 #ifdef CONFIG_FS_EXT4 81 { 82 .fstype = FS_TYPE_EXT, 83 .probe = ext4fs_probe, 84 .close = ext4fs_close, 85 .ls = ext4fs_ls, 86 .read = ext4_read_file, 87 }, 88 #endif 89 #ifdef CONFIG_SANDBOX 90 { 91 .fstype = FS_TYPE_SANDBOX, 92 .probe = sandbox_fs_set_blk_dev, 93 .close = sandbox_fs_close, 94 .ls = sandbox_fs_ls, 95 .read = fs_read_sandbox, 96 .write = fs_write_sandbox, 97 }, 98 #endif 99 { 100 .fstype = FS_TYPE_ANY, 101 .probe = fs_probe_unsupported, 102 .close = fs_close_unsupported, 103 .ls = fs_ls_unsupported, 104 .read = fs_read_unsupported, 105 .write = fs_write_unsupported, 106 }, 107 }; 108 109 static struct fstype_info *fs_get_info(int fstype) 110 { 111 struct fstype_info *info; 112 int i; 113 114 for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes) - 1; i++, info++) { 115 if (fstype == info->fstype) 116 return info; 117 } 118 119 /* Return the 'unsupported' sentinel */ 120 return info; 121 } 122 123 int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype) 124 { 125 struct fstype_info *info; 126 int part, i; 127 #ifdef CONFIG_NEEDS_MANUAL_RELOC 128 static int relocated; 129 130 if (!relocated) { 131 for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); 132 i++, info++) { 133 info->probe += gd->reloc_off; 134 info->close += gd->reloc_off; 135 info->ls += gd->reloc_off; 136 info->read += gd->reloc_off; 137 info->write += gd->reloc_off; 138 } 139 relocated = 1; 140 } 141 #endif 142 143 part = get_device_and_partition(ifname, dev_part_str, &fs_dev_desc, 144 &fs_partition, 1); 145 if (part < 0) 146 return -1; 147 148 for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) { 149 if (fstype != FS_TYPE_ANY && info->fstype != FS_TYPE_ANY && 150 fstype != info->fstype) 151 continue; 152 153 if (!info->probe(fs_dev_desc, &fs_partition)) { 154 fs_type = info->fstype; 155 return 0; 156 } 157 } 158 159 return -1; 160 } 161 162 static void fs_close(void) 163 { 164 struct fstype_info *info = fs_get_info(fs_type); 165 166 info->close(); 167 168 fs_type = FS_TYPE_ANY; 169 } 170 171 int fs_ls(const char *dirname) 172 { 173 int ret; 174 175 struct fstype_info *info = fs_get_info(fs_type); 176 177 ret = info->ls(dirname); 178 179 fs_type = FS_TYPE_ANY; 180 fs_close(); 181 182 return ret; 183 } 184 185 int fs_read(const char *filename, ulong addr, int offset, int len) 186 { 187 struct fstype_info *info = fs_get_info(fs_type); 188 void *buf; 189 int ret; 190 191 /* 192 * We don't actually know how many bytes are being read, since len==0 193 * means read the whole file. 194 */ 195 buf = map_sysmem(addr, len); 196 ret = info->read(filename, buf, offset, len); 197 unmap_sysmem(buf); 198 199 /* If we requested a specific number of bytes, check we got it */ 200 if (ret >= 0 && len && ret != len) { 201 printf("** Unable to read file %s **\n", filename); 202 ret = -1; 203 } 204 fs_close(); 205 206 return ret; 207 } 208 209 int fs_write(const char *filename, ulong addr, int offset, int len) 210 { 211 struct fstype_info *info = fs_get_info(fs_type); 212 void *buf; 213 int ret; 214 215 /* 216 * We don't actually know how many bytes are being read, since len==0 217 * means read the whole file. 218 */ 219 buf = map_sysmem(addr, len); 220 ret = info->write(filename, buf, offset, len); 221 unmap_sysmem(buf); 222 223 /* If we requested a specific number of bytes, check we got it */ 224 if (ret >= 0 && len && ret != len) { 225 printf("** Unable to write file %s **\n", filename); 226 ret = -1; 227 } 228 fs_close(); 229 230 return ret; 231 } 232 233 int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], 234 int fstype) 235 { 236 unsigned long addr; 237 const char *addr_str; 238 const char *filename; 239 unsigned long bytes; 240 unsigned long pos; 241 int len_read; 242 unsigned long time; 243 244 if (argc < 2) 245 return CMD_RET_USAGE; 246 if (argc > 7) 247 return CMD_RET_USAGE; 248 249 if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype)) 250 return 1; 251 252 if (argc >= 4) { 253 addr = simple_strtoul(argv[3], NULL, 16); 254 } else { 255 addr_str = getenv("loadaddr"); 256 if (addr_str != NULL) 257 addr = simple_strtoul(addr_str, NULL, 16); 258 else 259 addr = CONFIG_SYS_LOAD_ADDR; 260 } 261 if (argc >= 5) { 262 filename = argv[4]; 263 } else { 264 filename = getenv("bootfile"); 265 if (!filename) { 266 puts("** No boot file defined **\n"); 267 return 1; 268 } 269 } 270 if (argc >= 6) 271 bytes = simple_strtoul(argv[5], NULL, 16); 272 else 273 bytes = 0; 274 if (argc >= 7) 275 pos = simple_strtoul(argv[6], NULL, 16); 276 else 277 pos = 0; 278 279 time = get_timer(0); 280 len_read = fs_read(filename, addr, pos, bytes); 281 time = get_timer(time); 282 if (len_read <= 0) 283 return 1; 284 285 printf("%d bytes read in %lu ms", len_read, time); 286 if (time > 0) { 287 puts(" ("); 288 print_size(len_read / time * 1000, "/s"); 289 puts(")"); 290 } 291 puts("\n"); 292 293 setenv_hex("filesize", len_read); 294 295 return 0; 296 } 297 298 int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], 299 int fstype) 300 { 301 if (argc < 2) 302 return CMD_RET_USAGE; 303 if (argc > 4) 304 return CMD_RET_USAGE; 305 306 if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype)) 307 return 1; 308 309 if (fs_ls(argc >= 4 ? argv[3] : "/")) 310 return 1; 311 312 return 0; 313 } 314 315 int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], 316 int fstype) 317 { 318 unsigned long addr; 319 const char *filename; 320 unsigned long bytes; 321 unsigned long pos; 322 int len; 323 unsigned long time; 324 325 if (argc < 6 || argc > 7) 326 return CMD_RET_USAGE; 327 328 if (fs_set_blk_dev(argv[1], argv[2], fstype)) 329 return 1; 330 331 filename = argv[3]; 332 addr = simple_strtoul(argv[4], NULL, 16); 333 bytes = simple_strtoul(argv[5], NULL, 16); 334 if (argc >= 7) 335 pos = simple_strtoul(argv[6], NULL, 16); 336 else 337 pos = 0; 338 339 time = get_timer(0); 340 len = fs_write(filename, addr, pos, bytes); 341 time = get_timer(time); 342 if (len <= 0) 343 return 1; 344 345 printf("%d bytes written in %lu ms", len, time); 346 if (time > 0) { 347 puts(" ("); 348 print_size(len / time * 1000, "/s"); 349 puts(")"); 350 } 351 puts("\n"); 352 353 return 0; 354 } 355