cmd/jffs2.c

   1 /*
   2  * (C) Copyright 2002
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * (C) Copyright 2002
   6  * Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.de>
   7  *
   8  * (C) Copyright 2003
   9  * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de>
  10  *
  11  * (C) Copyright 2005
  12  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  13  *
  14  *   Added support for reading flash partition table from environment.
  15  *   Parsing routines are based on driver/mtd/cmdline.c from the linux 2.4
  16  *   kernel tree.
  17  *
  18  *   $Id: cmdlinepart.c,v 1.17 2004/11/26 11:18:47 lavinen Exp $
  19  *   Copyright 2002 SYSGO Real-Time Solutions GmbH
  20  *
  21  * SPDX-License-Identifier:     GPL-2.0+
  22  */
  23
  24 /*
  25  * Three environment variables are used by the parsing routines:
  26  *
  27  * 'partition' - keeps current partition identifier
  28  *
  29  * partition  := <part-id>
  30  * <part-id>  := <dev-id>,part_num
  31  *
  32  *
  33  * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping
  34  *
  35  * mtdids=<idmap>[,<idmap>,...]
  36  *
  37  * <idmap>    := <dev-id>=<mtd-id>
  38  * <dev-id>   := 'nand'|'nor'|'onenand'<dev-num>
  39  * <dev-num>  := mtd device number, 0...
  40  * <mtd-id>   := unique device tag used by linux kernel to find mtd device (mtd->name)
  41  *
  42  *
  43  * 'mtdparts' - partition list
  44  *
  45  * mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]
  46  *
  47  * <mtd-def>  := <mtd-id>:<part-def>[,<part-def>...]
  48  * <mtd-id>   := unique device tag used by linux kernel to find mtd device (mtd->name)
  49  * <part-def> := <size>[@<offset>][<name>][<ro-flag>]
  50  * <size>     := standard linux memsize OR '-' to denote all remaining space
  51  * <offset>   := partition start offset within the device
  52  * <name>     := '(' NAME ')'
  53  * <ro-flag>  := when set to 'ro' makes partition read-only (not used, passed to kernel)
  54  *
  55  * Notes:
  56  * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping
  57  * - if the above variables are not set defaults for a given target are used
  58  *
  59  * Examples:
  60  *
  61  * 1 NOR Flash, with 1 single writable partition:
  62  * mtdids=nor0=edb7312-nor
  63  * mtdparts=mtdparts=edb7312-nor:-
  64  *
  65  * 1 NOR Flash with 2 partitions, 1 NAND with one
  66  * mtdids=nor0=edb7312-nor,nand0=edb7312-nand
  67  * mtdparts=mtdparts=edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
  68  *
  69  */
  70
  71 /*
  72  * JFFS2/CRAMFS support
  73  */
  74 #include <common.h>
  75 #include <command.h>
  76 #include <malloc.h>
  77 #include <jffs2/jffs2.h>
  78 #include <linux/list.h>
  79 #include <linux/ctype.h>
  80 #include <cramfs/cramfs_fs.h>
  81
  82 #if defined(CONFIG_CMD_NAND)
  83 #include <linux/mtd/nand.h>
  84 #include <nand.h>
  85 #endif
  86
  87 #if defined(CONFIG_CMD_ONENAND)
  88 #include <linux/mtd/mtd.h>
  89 #include <linux/mtd/onenand.h>
  90 #include <onenand_uboot.h>
  91 #endif
  92
  93 /* enable/disable debugging messages */
  94 #define DEBUG_JFFS
  95 #undef  DEBUG_JFFS
  96
  97 #ifdef  DEBUG_JFFS
  98 # define DEBUGF(fmt, args...)   printf(fmt ,##args)
  99 #else
 100 # define DEBUGF(fmt, args...)
 101 #endif
 102
 103 /* special size referring to all the remaining space in a partition */
 104 #define SIZE_REMAINING          0xFFFFFFFF
 105
 106 /* special offset value, it is used when not provided by user
 107  *
 108  * this value is used temporarily during parsing, later such offests
 109  * are recalculated */
 110 #define OFFSET_NOT_SPECIFIED    0xFFFFFFFF
 111
 112 /* minimum partition size */
 113 #define MIN_PART_SIZE           4096
 114
 115 /* this flag needs to be set in part_info struct mask_flags
 116  * field for read-only partitions */
 117 #define MTD_WRITEABLE_CMD               1
 118
 119 /* current active device and partition number */
 120 #ifdef CONFIG_CMD_MTDPARTS
 121 /* Use the ones declared in cmd_mtdparts.c */
 122 extern struct mtd_device *current_mtd_dev;
 123 extern u8 current_mtd_partnum;
 124 #else
 125 /* Use local ones */
 126 struct mtd_device *current_mtd_dev = NULL;
 127 u8 current_mtd_partnum = 0;
 128 #endif
 129
 130 #if defined(CONFIG_CMD_CRAMFS)
 131 extern int cramfs_check (struct part_info *info);
 132 extern int cramfs_load (char *loadoffset, struct part_info *info, char *filename);
 133 extern int cramfs_ls (struct part_info *info, char *filename);
 134 extern int cramfs_info (struct part_info *info);
 135 #else
 136 /* defining empty macros for function names is ugly but avoids ifdef clutter
 137  * all over the code */
 138 #define cramfs_check(x)         (0)
 139 #define cramfs_load(x,y,z)      (-1)
 140 #define cramfs_ls(x,y)          (0)
 141 #define cramfs_info(x)          (0)
 142 #endif
 143
 144 #ifndef CONFIG_CMD_MTDPARTS
 145 /**
 146  * Check device number to be within valid range for given device type.
 147  *
 148  * @param dev device to validate
 149  * @return 0 if device is valid, 1 otherwise
 150  */
 151 static int mtd_device_validate(u8 type, u8 num, u32 *size)
 152 {
 153         if (type == MTD_DEV_TYPE_NOR) {
 154 #if defined(CONFIG_CMD_FLASH)
 155                 if (num < CONFIG_SYS_MAX_FLASH_BANKS) {
 156                         extern flash_info_t flash_info[];
 157                         *size = flash_info[num].size;
 158
 159                         return 0;
 160                 }
 161
 162                 printf("no such FLASH device: %s%d (valid range 0 ... %d\n",
 163                                 MTD_DEV_TYPE(type), num, CONFIG_SYS_MAX_FLASH_BANKS - 1);
 164 #else
 165                 printf("support for FLASH devices not present\n");
 166 #endif
 167         } else if (type == MTD_DEV_TYPE_NAND) {
 168 #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
 169                 struct mtd_info *mtd = get_nand_dev_by_index(num);
 170                 if (mtd) {
 171                         *size = mtd->size;
 172                         return 0;
 173                 }
 174
 175                 printf("no such NAND device: %s%d (valid range 0 ... %d)\n",
 176                                 MTD_DEV_TYPE(type), num, CONFIG_SYS_MAX_NAND_DEVICE - 1);
 177 #else
 178                 printf("support for NAND devices not present\n");
 179 #endif
 180         } else if (type == MTD_DEV_TYPE_ONENAND) {
 181 #if defined(CONFIG_CMD_ONENAND)
 182                 *size = onenand_mtd.size;
 183                 return 0;
 184 #else
 185                 printf("support for OneNAND devices not present\n");
 186 #endif
 187         } else
 188                 printf("Unknown defice type %d\n", type);
 189
 190         return 1;
 191 }
 192
 193 /**
 194  * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
 195  * return device type and number.
 196  *
 197  * @param id string describing device id
 198  * @param ret_id output pointer to next char after parse completes (output)
 199  * @param dev_type parsed device type (output)
 200  * @param dev_num parsed device number (output)
 201  * @return 0 on success, 1 otherwise
 202  */
 203 static int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num)
 204 {
 205         const char *p = id;
 206
 207         *dev_type = 0;
 208         if (strncmp(p, "nand", 4) == 0) {
 209                 *dev_type = MTD_DEV_TYPE_NAND;
 210                 p += 4;
 211         } else if (strncmp(p, "nor", 3) == 0) {
 212                 *dev_type = MTD_DEV_TYPE_NOR;
 213                 p += 3;
 214         } else if (strncmp(p, "onenand", 7) == 0) {
 215                 *dev_type = MTD_DEV_TYPE_ONENAND;
 216                 p += 7;
 217         } else {
 218                 printf("incorrect device type in %s\n", id);
 219                 return 1;
 220         }
 221
 222         if (!isdigit(*p)) {
 223                 printf("incorrect device number in %s\n", id);
 224                 return 1;
 225         }
 226
 227         *dev_num = simple_strtoul(p, (char **)&p, 0);
 228         if (ret_id)
 229                 *ret_id = p;
 230         return 0;
 231 }
 232
 233 /*
 234  * 'Static' version of command line mtdparts_init() routine. Single partition on
 235  * a single device configuration.
 236  */
 237
 238 /**
 239  * Calculate sector size.
 240  *
 241  * @return sector size
 242  */
 243 static inline u32 get_part_sector_size_nand(struct mtdids *id)
 244 {
 245 #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
 246         struct mtd_info *mtd;
 247
 248         mtd = get_nand_dev_by_index(id->num);
 249
 250         return mtd->erasesize;
 251 #else
 252         BUG();
 253         return 0;
 254 #endif
 255 }
 256
 257 static inline u32 get_part_sector_size_nor(struct mtdids *id, struct part_info *part)
 258 {
 259 #if defined(CONFIG_CMD_FLASH)
 260         extern flash_info_t flash_info[];
 261
 262         u32 end_phys, start_phys, sector_size = 0, size = 0;
 263         int i;
 264         flash_info_t *flash;
 265
 266         flash = &flash_info[id->num];
 267
 268         start_phys = flash->start[0] + part->offset;
 269         end_phys = start_phys + part->size - 1;
 270
 271         for (i = 0; i < flash->sector_count; i++) {
 272                 if (flash->start[i] >= end_phys)
 273                         break;
 274
 275                 if (flash->start[i] >= start_phys) {
 276                         if (i == flash->sector_count - 1) {
 277                                 size = flash->start[0] + flash->size - flash->start[i];
 278                         } else {
 279                                 size = flash->start[i+1] - flash->start[i];
 280                         }
 281
 282                         if (sector_size < size)
 283                                 sector_size = size;
 284                 }
 285         }
 286
 287         return sector_size;
 288 #else
 289         BUG();
 290         return 0;
 291 #endif
 292 }
 293
 294 static inline u32 get_part_sector_size_onenand(void)
 295 {
 296 #if defined(CONFIG_CMD_ONENAND)
 297         struct mtd_info *mtd;
 298
 299         mtd = &onenand_mtd;
 300
 301         return mtd->erasesize;
 302 #else
 303         BUG();
 304         return 0;
 305 #endif
 306 }
 307
 308 static inline u32 get_part_sector_size(struct mtdids *id, struct part_info *part)
 309 {
 310         if (id->type == MTD_DEV_TYPE_NAND)
 311                 return get_part_sector_size_nand(id);
 312         else if (id->type == MTD_DEV_TYPE_NOR)
 313                 return get_part_sector_size_nor(id, part);
 314         else if (id->type == MTD_DEV_TYPE_ONENAND)
 315                 return get_part_sector_size_onenand();
 316         else
 317                 DEBUGF("Error: Unknown device type.\n");
 318
 319         return 0;
 320 }
 321
 322 /**
 323  * Parse and initialize global mtdids mapping and create global
 324  * device/partition list.
 325  *
 326  * 'Static' version of command line mtdparts_init() routine. Single partition on
 327  * a single device configuration.
 328  *
 329  * @return 0 on success, 1 otherwise
 330  */
 331 int mtdparts_init(void)
 332 {
 333         static int initialized = 0;
 334         u32 size;
 335         char *dev_name;
 336
 337         DEBUGF("\n---mtdparts_init---\n");
 338         if (!initialized) {
 339                 struct mtdids *id;
 340                 struct part_info *part;
 341
 342                 initialized = 1;
 343                 current_mtd_dev = (struct mtd_device *)
 344                         malloc(sizeof(struct mtd_device) +
 345                                         sizeof(struct part_info) +
 346                                         sizeof(struct mtdids));
 347                 if (!current_mtd_dev) {
 348                         printf("out of memory\n");
 349                         return 1;
 350                 }
 351                 memset(current_mtd_dev, 0, sizeof(struct mtd_device) +
 352                        sizeof(struct part_info) + sizeof(struct mtdids));
 353
 354                 id = (struct mtdids *)(current_mtd_dev + 1);
 355                 part = (struct part_info *)(id + 1);
 356
 357                 /* id */
 358                 id->mtd_id = "single part";
 359
 360 #if defined(CONFIG_JFFS2_DEV)
 361                 dev_name = CONFIG_JFFS2_DEV;
 362 #else
 363                 dev_name = "nor0";
 364 #endif
 365
 366                 if ((mtd_id_parse(dev_name, NULL, &id->type, &id->num) != 0) ||
 367                                 (mtd_device_validate(id->type, id->num, &size) != 0)) {
 368                         printf("incorrect device: %s%d\n", MTD_DEV_TYPE(id->type), id->num);
 369                         free(current_mtd_dev);
 370                         return 1;
 371                 }
 372                 id->size = size;
 373                 INIT_LIST_HEAD(&id->link);
 374
 375                 DEBUGF("dev id: type = %d, num = %d, size = 0x%08lx, mtd_id = %s\n",
 376                                 id->type, id->num, id->size, id->mtd_id);
 377
 378                 /* partition */
 379                 part->name = "static";
 380                 part->auto_name = 0;
 381
 382 #if defined(CONFIG_JFFS2_PART_SIZE)
 383                 part->size = CONFIG_JFFS2_PART_SIZE;
 384 #else
 385                 part->size = SIZE_REMAINING;
 386 #endif
 387
 388 #if defined(CONFIG_JFFS2_PART_OFFSET)
 389                 part->offset = CONFIG_JFFS2_PART_OFFSET;
 390 #else
 391                 part->offset = 0x00000000;
 392 #endif
 393
 394                 part->dev = current_mtd_dev;
 395                 INIT_LIST_HEAD(&part->link);
 396
 397                 /* recalculate size if needed */
 398                 if (part->size == SIZE_REMAINING)
 399                         part->size = id->size - part->offset;
 400
 401                 part->sector_size = get_part_sector_size(id, part);
 402
 403                 DEBUGF("part  : name = %s, size = 0x%08lx, offset = 0x%08lx\n",
 404                                 part->name, part->size, part->offset);
 405
 406                 /* device */
 407                 current_mtd_dev->id = id;
 408                 INIT_LIST_HEAD(&current_mtd_dev->link);
 409                 current_mtd_dev->num_parts = 1;
 410                 INIT_LIST_HEAD(&current_mtd_dev->parts);
 411                 list_add(&part->link, &current_mtd_dev->parts);
 412         }
 413
 414         return 0;
 415 }
 416 #endif /* #ifndef CONFIG_CMD_MTDPARTS */
 417
 418 /**
 419  * Return pointer to the partition of a requested number from a requested
 420  * device.
 421  *
 422  * @param dev device that is to be searched for a partition
 423  * @param part_num requested partition number
 424  * @return pointer to the part_info, NULL otherwise
 425  */
 426 static struct part_info* jffs2_part_info(struct mtd_device *dev, unsigned int part_num)
 427 {
 428         struct list_head *entry;
 429         struct part_info *part;
 430         int num;
 431
 432         if (!dev)
 433                 return NULL;
 434
 435         DEBUGF("\n--- jffs2_part_info: partition number %d for device %s%d (%s)\n",
 436                         part_num, MTD_DEV_TYPE(dev->id->type),
 437                         dev->id->num, dev->id->mtd_id);
 438
 439         if (part_num >= dev->num_parts) {
 440                 printf("invalid partition number %d for device %s%d (%s)\n",
 441                                 part_num, MTD_DEV_TYPE(dev->id->type),
 442                                 dev->id->num, dev->id->mtd_id);
 443                 return NULL;
 444         }
 445
 446         /* locate partition number, return it */
 447         num = 0;
 448         list_for_each(entry, &dev->parts) {
 449                 part = list_entry(entry, struct part_info, link);
 450
 451                 if (part_num == num++) {
 452                         return part;
 453                 }
 454         }
 455
 456         return NULL;
 457 }
 458
 459 /***************************************************/
 460 /* U-Boot commands                                 */
 461 /***************************************************/
 462
 463 /**
 464  * Routine implementing fsload u-boot command. This routine tries to load
 465  * a requested file from jffs2/cramfs filesystem on a current partition.
 466  *
 467  * @param cmdtp command internal data
 468  * @param flag command flag
 469  * @param argc number of arguments supplied to the command
 470  * @param argv arguments list
 471  * @return 0 on success, 1 otherwise
 472  */
 473 int do_jffs2_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 474 {
 475         char *fsname;
 476         char *filename;
 477         int size;
 478         struct part_info *part;
 479         ulong offset = load_addr;
 480
 481         /* pre-set Boot file name */
 482         if ((filename = getenv("bootfile")) == NULL) {
 483                 filename = "uImage";
 484         }
 485
 486         if (argc == 2) {
 487                 filename = argv[1];
 488         }
 489         if (argc == 3) {
 490                 offset = simple_strtoul(argv[1], NULL, 16);
 491                 load_addr = offset;
 492                 filename = argv[2];
 493         }
 494
 495         /* make sure we are in sync with env variables */
 496         if (mtdparts_init() !=0)
 497                 return 1;
 498
 499         if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){
 500
 501                 /* check partition type for cramfs */
 502                 fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2");
 503                 printf("### %s loading '%s' to 0x%lx\n", fsname, filename, offset);
 504
 505                 if (cramfs_check(part)) {
 506                         size = cramfs_load ((char *) offset, part, filename);
 507                 } else {
 508                         /* if this is not cramfs assume jffs2 */
 509                         size = jffs2_1pass_load((char *)offset, part, filename);
 510                 }
 511
 512                 if (size > 0) {
 513                         printf("### %s load complete: %d bytes loaded to 0x%lx\n",
 514                                 fsname, size, offset);
 515                         env_set_hex("filesize", size);
 516                 } else {
 517                         printf("### %s LOAD ERROR<%x> for %s!\n", fsname, size, filename);
 518                 }
 519
 520                 return !(size > 0);
 521         }
 522         return 1;
 523 }
 524
 525 /**
 526  * Routine implementing u-boot ls command which lists content of a given
 527  * directory on a current partition.
 528  *
 529  * @param cmdtp command internal data
 530  * @param flag command flag
 531  * @param argc number of arguments supplied to the command
 532  * @param argv arguments list
 533  * @return 0 on success, 1 otherwise
 534  */
 535 int do_jffs2_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 536 {
 537         char *filename = "/";
 538         int ret;
 539         struct part_info *part;
 540
 541         if (argc == 2)
 542                 filename = argv[1];
 543
 544         /* make sure we are in sync with env variables */
 545         if (mtdparts_init() !=0)
 546                 return 1;
 547
 548         if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){
 549
 550                 /* check partition type for cramfs */
 551                 if (cramfs_check(part)) {
 552                         ret = cramfs_ls (part, filename);
 553                 } else {
 554                         /* if this is not cramfs assume jffs2 */
 555                         ret = jffs2_1pass_ls(part, filename);
 556                 }
 557
 558                 return ret ? 0 : 1;
 559         }
 560         return 1;
 561 }
 562
 563 /**
 564  * Routine implementing u-boot fsinfo command. This routine prints out
 565  * miscellaneous filesystem informations/statistics.
 566  *
 567  * @param cmdtp command internal data
 568  * @param flag command flag
 569  * @param argc number of arguments supplied to the command
 570  * @param argv arguments list
 571  * @return 0 on success, 1 otherwise
 572  */
 573 int do_jffs2_fsinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 574 {
 575         struct part_info *part;
 576         char *fsname;
 577         int ret;
 578
 579         /* make sure we are in sync with env variables */
 580         if (mtdparts_init() !=0)
 581                 return 1;
 582
 583         if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){
 584
 585                 /* check partition type for cramfs */
 586                 fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2");
 587                 printf("### filesystem type is %s\n", fsname);
 588
 589                 if (cramfs_check(part)) {
 590                         ret = cramfs_info (part);
 591                 } else {
 592                         /* if this is not cramfs assume jffs2 */
 593                         ret = jffs2_1pass_info(part);
 594                 }
 595
 596                 return ret ? 0 : 1;
 597         }
 598         return 1;
 599 }
 600
 601 /***************************************************/
 602 U_BOOT_CMD(
 603         fsload, 3,      0,      do_jffs2_fsload,
 604         "load binary file from a filesystem image",
 605         "[ off ] [ filename ]\n"
 606         "    - load binary file from flash bank\n"
 607         "      with offset 'off'"
 608 );
 609 U_BOOT_CMD(
 610         fsls,   2,      1,      do_jffs2_ls,
 611         "list files in a directory (default /)",
 612         "[ directory ]"
 613 );
 614
 615 U_BOOT_CMD(
 616         fsinfo, 1,      1,      do_jffs2_fsinfo,
 617         "print information about filesystems",
 618         ""
 619 );
 620 /***************************************************/