common/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                 if (num < CONFIG_SYS_MAX_NAND_DEVICE) {
 170                         *size = nand_info[num].size;
 171                         return 0;
 172                 }
 173
 174                 printf("no such NAND device: %s%d (valid range 0 ... %d)\n",
 175                                 MTD_DEV_TYPE(type), num, CONFIG_SYS_MAX_NAND_DEVICE - 1);
 176 #else
 177                 printf("support for NAND devices not present\n");
 178 #endif
 179         } else if (type == MTD_DEV_TYPE_ONENAND) {
 180 #if defined(CONFIG_CMD_ONENAND)
 181                 *size = onenand_mtd.size;
 182                 return 0;
 183 #else
 184                 printf("support for OneNAND devices not present\n");
 185 #endif
 186         } else
 187                 printf("Unknown defice type %d\n", type);
 188
 189         return 1;
 190 }
 191
 192 /**
 193  * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
 194  * return device type and number.
 195  *
 196  * @param id string describing device id
 197  * @param ret_id output pointer to next char after parse completes (output)
 198  * @param dev_type parsed device type (output)
 199  * @param dev_num parsed device number (output)
 200  * @return 0 on success, 1 otherwise
 201  */
 202 static int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num)
 203 {
 204         const char *p = id;
 205
 206         *dev_type = 0;
 207         if (strncmp(p, "nand", 4) == 0) {
 208                 *dev_type = MTD_DEV_TYPE_NAND;
 209                 p += 4;
 210         } else if (strncmp(p, "nor", 3) == 0) {
 211                 *dev_type = MTD_DEV_TYPE_NOR;
 212                 p += 3;
 213         } else if (strncmp(p, "onenand", 7) == 0) {
 214                 *dev_type = MTD_DEV_TYPE_ONENAND;
 215                 p += 7;
 216         } else {
 217                 printf("incorrect device type in %s\n", id);
 218                 return 1;
 219         }
 220
 221         if (!isdigit(*p)) {
 222                 printf("incorrect device number in %s\n", id);
 223                 return 1;
 224         }
 225
 226         *dev_num = simple_strtoul(p, (char **)&p, 0);
 227         if (ret_id)
 228                 *ret_id = p;
 229         return 0;
 230 }
 231
 232 /*
 233  * 'Static' version of command line mtdparts_init() routine. Single partition on
 234  * a single device configuration.
 235  */
 236
 237 /**
 238  * Calculate sector size.
 239  *
 240  * @return sector size
 241  */
 242 static inline u32 get_part_sector_size_nand(struct mtdids *id)
 243 {
 244 #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
 245         nand_info_t *nand;
 246
 247         nand = &nand_info[id->num];
 248
 249         return nand->erasesize;
 250 #else
 251         BUG();
 252         return 0;
 253 #endif
 254 }
 255
 256 static inline u32 get_part_sector_size_nor(struct mtdids *id, struct part_info *part)
 257 {
 258 #if defined(CONFIG_CMD_FLASH)
 259         extern flash_info_t flash_info[];
 260
 261         u32 end_phys, start_phys, sector_size = 0, size = 0;
 262         int i;
 263         flash_info_t *flash;
 264
 265         flash = &flash_info[id->num];
 266
 267         start_phys = flash->start[0] + part->offset;
 268         end_phys = start_phys + part->size - 1;
 269
 270         for (i = 0; i < flash->sector_count; i++) {
 271                 if (flash->start[i] >= end_phys)
 272                         break;
 273
 274                 if (flash->start[i] >= start_phys) {
 275                         if (i == flash->sector_count - 1) {
 276                                 size = flash->start[0] + flash->size - flash->start[i];
 277                         } else {
 278                                 size = flash->start[i+1] - flash->start[i];
 279                         }
 280
 281                         if (sector_size < size)
 282                                 sector_size = size;
 283                 }
 284         }
 285
 286         return sector_size;
 287 #else
 288         BUG();
 289         return 0;
 290 #endif
 291 }
 292
 293 static inline u32 get_part_sector_size_onenand(void)
 294 {
 295 #if defined(CONFIG_CMD_ONENAND)
 296         struct mtd_info *mtd;
 297
 298         mtd = &onenand_mtd;
 299
 300         return mtd->erasesize;
 301 #else
 302         BUG();
 303         return 0;
 304 #endif
 305 }
 306
 307 static inline u32 get_part_sector_size(struct mtdids *id, struct part_info *part)
 308 {
 309         if (id->type == MTD_DEV_TYPE_NAND)
 310                 return get_part_sector_size_nand(id);
 311         else if (id->type == MTD_DEV_TYPE_NOR)
 312                 return get_part_sector_size_nor(id, part);
 313         else if (id->type == MTD_DEV_TYPE_ONENAND)
 314                 return get_part_sector_size_onenand();
 315         else
 316                 DEBUGF("Error: Unknown device type.\n");
 317
 318         return 0;
 319 }
 320
 321 /**
 322  * Parse and initialize global mtdids mapping and create global
 323  * device/partition list.
 324  *
 325  * 'Static' version of command line mtdparts_init() routine. Single partition on
 326  * a single device configuration.
 327  *
 328  * @return 0 on success, 1 otherwise
 329  */
 330 int mtdparts_init(void)
 331 {
 332         static int initialized = 0;
 333         u32 size;
 334         char *dev_name;
 335
 336         DEBUGF("\n---mtdparts_init---\n");
 337         if (!initialized) {
 338                 struct mtdids *id;
 339                 struct part_info *part;
 340
 341                 initialized = 1;
 342                 current_mtd_dev = (struct mtd_device *)
 343                         malloc(sizeof(struct mtd_device) +
 344                                         sizeof(struct part_info) +
 345                                         sizeof(struct mtdids));
 346                 if (!current_mtd_dev) {
 347                         printf("out of memory\n");
 348                         return 1;
 349                 }
 350                 memset(current_mtd_dev, 0, sizeof(struct mtd_device) +
 351                        sizeof(struct part_info) + sizeof(struct mtdids));
 352
 353                 id = (struct mtdids *)(current_mtd_dev + 1);
 354                 part = (struct part_info *)(id + 1);
 355
 356                 /* id */
 357                 id->mtd_id = "single part";
 358
 359 #if defined(CONFIG_JFFS2_DEV)
 360                 dev_name = CONFIG_JFFS2_DEV;
 361 #else
 362                 dev_name = "nor0";
 363 #endif
 364
 365                 if ((mtd_id_parse(dev_name, NULL, &id->type, &id->num) != 0) ||
 366                                 (mtd_device_validate(id->type, id->num, &size) != 0)) {
 367                         printf("incorrect device: %s%d\n", MTD_DEV_TYPE(id->type), id->num);
 368                         free(current_mtd_dev);
 369                         return 1;
 370                 }
 371                 id->size = size;
 372                 INIT_LIST_HEAD(&id->link);
 373
 374                 DEBUGF("dev id: type = %d, num = %d, size = 0x%08lx, mtd_id = %s\n",
 375                                 id->type, id->num, id->size, id->mtd_id);
 376
 377                 /* partition */
 378                 part->name = "static";
 379                 part->auto_name = 0;
 380
 381 #if defined(CONFIG_JFFS2_PART_SIZE)
 382                 part->size = CONFIG_JFFS2_PART_SIZE;
 383 #else
 384                 part->size = SIZE_REMAINING;
 385 #endif
 386
 387 #if defined(CONFIG_JFFS2_PART_OFFSET)
 388                 part->offset = CONFIG_JFFS2_PART_OFFSET;
 389 #else
 390                 part->offset = 0x00000000;
 391 #endif
 392
 393                 part->dev = current_mtd_dev;
 394                 INIT_LIST_HEAD(&part->link);
 395
 396                 /* recalculate size if needed */
 397                 if (part->size == SIZE_REMAINING)
 398                         part->size = id->size - part->offset;
 399
 400                 part->sector_size = get_part_sector_size(id, part);
 401
 402                 DEBUGF("part  : name = %s, size = 0x%08lx, offset = 0x%08lx\n",
 403                                 part->name, part->size, part->offset);
 404
 405                 /* device */
 406                 current_mtd_dev->id = id;
 407                 INIT_LIST_HEAD(&current_mtd_dev->link);
 408                 current_mtd_dev->num_parts = 1;
 409                 INIT_LIST_HEAD(&current_mtd_dev->parts);
 410                 list_add(&part->link, &current_mtd_dev->parts);
 411         }
 412
 413         return 0;
 414 }
 415 #endif /* #ifndef CONFIG_CMD_MTDPARTS */
 416
 417 /**
 418  * Return pointer to the partition of a requested number from a requested
 419  * device.
 420  *
 421  * @param dev device that is to be searched for a partition
 422  * @param part_num requested partition number
 423  * @return pointer to the part_info, NULL otherwise
 424  */
 425 static struct part_info* jffs2_part_info(struct mtd_device *dev, unsigned int part_num)
 426 {
 427         struct list_head *entry;
 428         struct part_info *part;
 429         int num;
 430
 431         if (!dev)
 432                 return NULL;
 433
 434         DEBUGF("\n--- jffs2_part_info: partition number %d for device %s%d (%s)\n",
 435                         part_num, MTD_DEV_TYPE(dev->id->type),
 436                         dev->id->num, dev->id->mtd_id);
 437
 438         if (part_num >= dev->num_parts) {
 439                 printf("invalid partition number %d for device %s%d (%s)\n",
 440                                 part_num, MTD_DEV_TYPE(dev->id->type),
 441                                 dev->id->num, dev->id->mtd_id);
 442                 return NULL;
 443         }
 444
 445         /* locate partition number, return it */
 446         num = 0;
 447         list_for_each(entry, &dev->parts) {
 448                 part = list_entry(entry, struct part_info, link);
 449
 450                 if (part_num == num++) {
 451                         return part;
 452                 }
 453         }
 454
 455         return NULL;
 456 }
 457
 458 /***************************************************/
 459 /* U-boot commands                                 */
 460 /***************************************************/
 461
 462 /**
 463  * Routine implementing fsload u-boot command. This routine tries to load
 464  * a requested file from jffs2/cramfs filesystem on a current partition.
 465  *
 466  * @param cmdtp command internal data
 467  * @param flag command flag
 468  * @param argc number of arguments supplied to the command
 469  * @param argv arguments list
 470  * @return 0 on success, 1 otherwise
 471  */
 472 int do_jffs2_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 473 {
 474         char *fsname;
 475         char *filename;
 476         int size;
 477         struct part_info *part;
 478         ulong offset = load_addr;
 479
 480         /* pre-set Boot file name */
 481         if ((filename = getenv("bootfile")) == NULL) {
 482                 filename = "uImage";
 483         }
 484
 485         if (argc == 2) {
 486                 filename = argv[1];
 487         }
 488         if (argc == 3) {
 489                 offset = simple_strtoul(argv[1], NULL, 16);
 490                 load_addr = offset;
 491                 filename = argv[2];
 492         }
 493
 494         /* make sure we are in sync with env variables */
 495         if (mtdparts_init() !=0)
 496                 return 1;
 497
 498         if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){
 499
 500                 /* check partition type for cramfs */
 501                 fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2");
 502                 printf("### %s loading '%s' to 0x%lx\n", fsname, filename, offset);
 503
 504                 if (cramfs_check(part)) {
 505                         size = cramfs_load ((char *) offset, part, filename);
 506                 } else {
 507                         /* if this is not cramfs assume jffs2 */
 508                         size = jffs2_1pass_load((char *)offset, part, filename);
 509                 }
 510
 511                 if (size > 0) {
 512                         printf("### %s load complete: %d bytes loaded to 0x%lx\n",
 513                                 fsname, size, offset);
 514                         setenv_hex("filesize", size);
 515                 } else {
 516                         printf("### %s LOAD ERROR<%x> for %s!\n", fsname, size, filename);
 517                 }
 518
 519                 return !(size > 0);
 520         }
 521         return 1;
 522 }
 523
 524 /**
 525  * Routine implementing u-boot ls command which lists content of a given
 526  * directory on a current partition.
 527  *
 528  * @param cmdtp command internal data
 529  * @param flag command flag
 530  * @param argc number of arguments supplied to the command
 531  * @param argv arguments list
 532  * @return 0 on success, 1 otherwise
 533  */
 534 int do_jffs2_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 535 {
 536         char *filename = "/";
 537         int ret;
 538         struct part_info *part;
 539
 540         if (argc == 2)
 541                 filename = argv[1];
 542
 543         /* make sure we are in sync with env variables */
 544         if (mtdparts_init() !=0)
 545                 return 1;
 546
 547         if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){
 548
 549                 /* check partition type for cramfs */
 550                 if (cramfs_check(part)) {
 551                         ret = cramfs_ls (part, filename);
 552                 } else {
 553                         /* if this is not cramfs assume jffs2 */
 554                         ret = jffs2_1pass_ls(part, filename);
 555                 }
 556
 557                 return ret ? 0 : 1;
 558         }
 559         return 1;
 560 }
 561
 562 /**
 563  * Routine implementing u-boot fsinfo command. This routine prints out
 564  * miscellaneous filesystem informations/statistics.
 565  *
 566  * @param cmdtp command internal data
 567  * @param flag command flag
 568  * @param argc number of arguments supplied to the command
 569  * @param argv arguments list
 570  * @return 0 on success, 1 otherwise
 571  */
 572 int do_jffs2_fsinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 573 {
 574         struct part_info *part;
 575         char *fsname;
 576         int ret;
 577
 578         /* make sure we are in sync with env variables */
 579         if (mtdparts_init() !=0)
 580                 return 1;
 581
 582         if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){
 583
 584                 /* check partition type for cramfs */
 585                 fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2");
 586                 printf("### filesystem type is %s\n", fsname);
 587
 588                 if (cramfs_check(part)) {
 589                         ret = cramfs_info (part);
 590                 } else {
 591                         /* if this is not cramfs assume jffs2 */
 592                         ret = jffs2_1pass_info(part);
 593                 }
 594
 595                 return ret ? 0 : 1;
 596         }
 597         return 1;
 598 }
 599
 600 /***************************************************/
 601 U_BOOT_CMD(
 602         fsload, 3,      0,      do_jffs2_fsload,
 603         "load binary file from a filesystem image",
 604         "[ off ] [ filename ]\n"
 605         "    - load binary file from flash bank\n"
 606         "      with offset 'off'"
 607 );
 608 U_BOOT_CMD(
 609         ls,     2,      1,      do_jffs2_ls,
 610         "list files in a directory (default /)",
 611         "[ directory ]"
 612 );
 613
 614 U_BOOT_CMD(
 615         fsinfo, 1,      1,      do_jffs2_fsinfo,
 616         "print information about filesystems",
 617         ""
 618 );
 619 /***************************************************/