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  * See file CREDITS for list of people who contributed to this
  22  * project.
  23  *
  24  * This program is free software; you can redistribute it and/or
  25  * modify it under the terms of the GNU General Public License as
  26  * published by the Free Software Foundation; either version 2 of
  27  * the License, or (at your option) any later version.
  28  *
  29  * This program is distributed in the hope that it will be useful,
  30  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  31  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  32  * GNU General Public License for more details.
  33  *
  34  * You should have received a copy of the GNU General Public License
  35  * along with this program; if not, write to the Free Software
  36  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  37  * MA 02111-1307 USA
  38  */
  39
  40 /*
  41  * Three environment variables are used by the parsing routines:
  42  *
  43  * 'partition' - keeps current partition identifier
  44  *
  45  * partition  := <part-id>
  46  * <part-id>  := <dev-id>,part_num
  47  *
  48  *
  49  * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping
  50  *
  51  * mtdids=<idmap>[,<idmap>,...]
  52  *
  53  * <idmap>    := <dev-id>=<mtd-id>
  54  * <dev-id>   := 'nand'|'nor'|'onenand'<dev-num>
  55  * <dev-num>  := mtd device number, 0...
  56  * <mtd-id>   := unique device tag used by linux kernel to find mtd device (mtd->name)
  57  *
  58  *
  59  * 'mtdparts' - partition list
  60  *
  61  * mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]
  62  *
  63  * <mtd-def>  := <mtd-id>:<part-def>[,<part-def>...]
  64  * <mtd-id>   := unique device tag used by linux kernel to find mtd device (mtd->name)
  65  * <part-def> := <size>[@<offset>][<name>][<ro-flag>]
  66  * <size>     := standard linux memsize OR '-' to denote all remaining space
  67  * <offset>   := partition start offset within the device
  68  * <name>     := '(' NAME ')'
  69  * <ro-flag>  := when set to 'ro' makes partition read-only (not used, passed to kernel)
  70  *
  71  * Notes:
  72  * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping
  73  * - if the above variables are not set defaults for a given target are used
  74  *
  75  * Examples:
  76  *
  77  * 1 NOR Flash, with 1 single writable partition:
  78  * mtdids=nor0=edb7312-nor
  79  * mtdparts=mtdparts=edb7312-nor:-
  80  *
  81  * 1 NOR Flash with 2 partitions, 1 NAND with one
  82  * mtdids=nor0=edb7312-nor,nand0=edb7312-nand
  83  * mtdparts=mtdparts=edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
  84  *
  85  */
  86
  87 /*
  88  * JFFS2/CRAMFS support
  89  */
  90 #include <common.h>
  91 #include <command.h>
  92 #include <malloc.h>
  93 #include <jffs2/jffs2.h>
  94 #include <linux/list.h>
  95 #include <linux/ctype.h>
  96 #include <cramfs/cramfs_fs.h>
  97
  98 #if defined(CONFIG_CMD_NAND)
  99 #ifdef CONFIG_NAND_LEGACY
 100 #include <linux/mtd/nand_legacy.h>
 101 #else /* !CONFIG_NAND_LEGACY */
 102 #include <linux/mtd/nand.h>
 103 #include <nand.h>
 104 #endif /* !CONFIG_NAND_LEGACY */
 105 #endif
 106
 107 #if defined(CONFIG_CMD_ONENAND)
 108 #include <linux/mtd/mtd.h>
 109 #include <linux/mtd/onenand.h>
 110 #include <onenand_uboot.h>
 111 #endif
 112
 113 /* enable/disable debugging messages */
 114 #define DEBUG_JFFS
 115 #undef  DEBUG_JFFS
 116
 117 #ifdef  DEBUG_JFFS
 118 # define DEBUGF(fmt, args...)   printf(fmt ,##args)
 119 #else
 120 # define DEBUGF(fmt, args...)
 121 #endif
 122
 123 /* special size referring to all the remaining space in a partition */
 124 #define SIZE_REMAINING          0xFFFFFFFF
 125
 126 /* special offset value, it is used when not provided by user
 127  *
 128  * this value is used temporarily during parsing, later such offests
 129  * are recalculated */
 130 #define OFFSET_NOT_SPECIFIED    0xFFFFFFFF
 131
 132 /* minimum partition size */
 133 #define MIN_PART_SIZE           4096
 134
 135 /* this flag needs to be set in part_info struct mask_flags
 136  * field for read-only partitions */
 137 #define MTD_WRITEABLE_CMD               1
 138
 139 /* current active device and partition number */
 140 #ifdef CONFIG_CMD_MTDPARTS
 141 /* Use the ones declared in cmd_mtdparts.c */
 142 extern struct mtd_device *current_mtd_dev;
 143 extern u8 current_mtd_partnum;
 144 #else
 145 /* Use local ones */
 146 struct mtd_device *current_mtd_dev = NULL;
 147 u8 current_mtd_partnum = 0;
 148 #endif
 149
 150 #if defined(CONFIG_CMD_CRAMFS)
 151 extern int cramfs_check (struct part_info *info);
 152 extern int cramfs_load (char *loadoffset, struct part_info *info, char *filename);
 153 extern int cramfs_ls (struct part_info *info, char *filename);
 154 extern int cramfs_info (struct part_info *info);
 155 #else
 156 /* defining empty macros for function names is ugly but avoids ifdef clutter
 157  * all over the code */
 158 #define cramfs_check(x)         (0)
 159 #define cramfs_load(x,y,z)      (-1)
 160 #define cramfs_ls(x,y)          (0)
 161 #define cramfs_info(x)          (0)
 162 #endif
 163
 164 #ifndef CONFIG_CMD_MTDPARTS
 165 /**
 166  * Check device number to be within valid range for given device type.
 167  *
 168  * @param dev device to validate
 169  * @return 0 if device is valid, 1 otherwise
 170  */
 171 static int mtd_device_validate(u8 type, u8 num, u32 *size)
 172 {
 173         if (type == MTD_DEV_TYPE_NOR) {
 174 #if defined(CONFIG_CMD_FLASH)
 175                 if (num < CONFIG_SYS_MAX_FLASH_BANKS) {
 176                         extern flash_info_t flash_info[];
 177                         *size = flash_info[num].size;
 178
 179                         return 0;
 180                 }
 181
 182                 printf("no such FLASH device: %s%d (valid range 0 ... %d\n",
 183                                 MTD_DEV_TYPE(type), num, CONFIG_SYS_MAX_FLASH_BANKS - 1);
 184 #else
 185                 printf("support for FLASH devices not present\n");
 186 #endif
 187         } else if (type == MTD_DEV_TYPE_NAND) {
 188 #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
 189                 if (num < CONFIG_SYS_MAX_NAND_DEVICE) {
 190 #ifndef CONFIG_NAND_LEGACY
 191                         *size = nand_info[num].size;
 192 #else
 193                         extern struct nand_chip nand_dev_desc[CONFIG_SYS_MAX_NAND_DEVICE];
 194                         *size = nand_dev_desc[num].totlen;
 195 #endif
 196                         return 0;
 197                 }
 198
 199                 printf("no such NAND device: %s%d (valid range 0 ... %d)\n",
 200                                 MTD_DEV_TYPE(type), num, CONFIG_SYS_MAX_NAND_DEVICE - 1);
 201 #else
 202                 printf("support for NAND devices not present\n");
 203 #endif
 204         } else if (type == MTD_DEV_TYPE_ONENAND) {
 205 #if defined(CONFIG_CMD_ONENAND)
 206                 *size = onenand_mtd.size;
 207                 return 0;
 208 #else
 209                 printf("support for OneNAND devices not present\n");
 210 #endif
 211         } else
 212                 printf("Unknown defice type %d\n", type);
 213
 214         return 1;
 215 }
 216
 217 /**
 218  * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
 219  * return device type and number.
 220  *
 221  * @param id string describing device id
 222  * @param ret_id output pointer to next char after parse completes (output)
 223  * @param dev_type parsed device type (output)
 224  * @param dev_num parsed device number (output)
 225  * @return 0 on success, 1 otherwise
 226  */
 227 static int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num)
 228 {
 229         const char *p = id;
 230
 231         *dev_type = 0;
 232         if (strncmp(p, "nand", 4) == 0) {
 233                 *dev_type = MTD_DEV_TYPE_NAND;
 234                 p += 4;
 235         } else if (strncmp(p, "nor", 3) == 0) {
 236                 *dev_type = MTD_DEV_TYPE_NOR;
 237                 p += 3;
 238         } else if (strncmp(p, "onenand", 7) == 0) {
 239                 *dev_type = MTD_DEV_TYPE_ONENAND;
 240                 p += 7;
 241         } else {
 242                 printf("incorrect device type in %s\n", id);
 243                 return 1;
 244         }
 245
 246         if (!isdigit(*p)) {
 247                 printf("incorrect device number in %s\n", id);
 248                 return 1;
 249         }
 250
 251         *dev_num = simple_strtoul(p, (char **)&p, 0);
 252         if (ret_id)
 253                 *ret_id = p;
 254         return 0;
 255 }
 256
 257 /*
 258  * 'Static' version of command line mtdparts_init() routine. Single partition on
 259  * a single device configuration.
 260  */
 261
 262 /**
 263  * Calculate sector size.
 264  *
 265  * @return sector size
 266  */
 267 static inline u32 get_part_sector_size_nand(struct mtdids *id)
 268 {
 269 #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
 270 #if defined(CONFIG_NAND_LEGACY)
 271         extern struct nand_chip nand_dev_desc[CONFIG_SYS_MAX_NAND_DEVICE];
 272
 273         return nand_dev_desc[id->num].erasesize;
 274 #else
 275         nand_info_t *nand;
 276
 277         nand = &nand_info[id->num];
 278
 279         return nand->erasesize;
 280 #endif
 281 #else
 282         BUG();
 283         return 0;
 284 #endif
 285 }
 286
 287 static inline u32 get_part_sector_size_nor(struct mtdids *id, struct part_info *part)
 288 {
 289 #if defined(CONFIG_CMD_FLASH)
 290         extern flash_info_t flash_info[];
 291
 292         u32 end_phys, start_phys, sector_size = 0, size = 0;
 293         int i;
 294         flash_info_t *flash;
 295
 296         flash = &flash_info[id->num];
 297
 298         start_phys = flash->start[0] + part->offset;
 299         end_phys = start_phys + part->size;
 300
 301         for (i = 0; i < flash->sector_count; i++) {
 302                 if (flash->start[i] >= end_phys)
 303                         break;
 304
 305                 if (flash->start[i] >= start_phys) {
 306                         if (i == flash->sector_count - 1) {
 307                                 size = flash->start[0] + flash->size - flash->start[i];
 308                         } else {
 309                                 size = flash->start[i+1] - flash->start[i];
 310                         }
 311
 312                         if (sector_size < size)
 313                                 sector_size = size;
 314                 }
 315         }
 316
 317         return sector_size;
 318 #else
 319         BUG();
 320         return 0;
 321 #endif
 322 }
 323
 324 static inline u32 get_part_sector_size_onenand(void)
 325 {
 326 #if defined(CONFIG_CMD_ONENAND)
 327         struct mtd_info *mtd;
 328
 329         mtd = &onenand_mtd;
 330
 331         return mtd->erasesize;
 332 #else
 333         BUG();
 334         return 0;
 335 #endif
 336 }
 337
 338 static inline u32 get_part_sector_size(struct mtdids *id, struct part_info *part)
 339 {
 340         if (id->type == MTD_DEV_TYPE_NAND)
 341                 return get_part_sector_size_nand(id);
 342         else if (id->type == MTD_DEV_TYPE_NOR)
 343                 return get_part_sector_size_nor(id, part);
 344         else if (id->type == MTD_DEV_TYPE_ONENAND)
 345                 return get_part_sector_size_onenand();
 346         else
 347                 DEBUGF("Error: Unknown device type.\n");
 348
 349         return 0;
 350 }
 351
 352 /**
 353  * Parse and initialize global mtdids mapping and create global
 354  * device/partition list.
 355  *
 356  * 'Static' version of command line mtdparts_init() routine. Single partition on
 357  * a single device configuration.
 358  *
 359  * @return 0 on success, 1 otherwise
 360  */
 361 int mtdparts_init(void)
 362 {
 363         static int initialized = 0;
 364         u32 size;
 365         char *dev_name;
 366
 367         DEBUGF("\n---mtdparts_init---\n");
 368         if (!initialized) {
 369                 struct mtdids *id;
 370                 struct part_info *part;
 371
 372                 initialized = 1;
 373                 current_mtd_dev = (struct mtd_device *)
 374                         malloc(sizeof(struct mtd_device) +
 375                                         sizeof(struct part_info) +
 376                                         sizeof(struct mtdids));
 377                 if (!current_mtd_dev) {
 378                         printf("out of memory\n");
 379                         return 1;
 380                 }
 381                 memset(current_mtd_dev, 0, sizeof(struct mtd_device) +
 382                        sizeof(struct part_info) + sizeof(struct mtdids));
 383
 384                 id = (struct mtdids *)(current_mtd_dev + 1);
 385                 part = (struct part_info *)(id + 1);
 386
 387                 /* id */
 388                 id->mtd_id = "single part";
 389
 390 #if defined(CONFIG_JFFS2_DEV)
 391                 dev_name = CONFIG_JFFS2_DEV;
 392 #else
 393                 dev_name = "nor0";
 394 #endif
 395
 396                 if ((mtd_id_parse(dev_name, NULL, &id->type, &id->num) != 0) ||
 397                                 (mtd_device_validate(id->type, id->num, &size) != 0)) {
 398                         printf("incorrect device: %s%d\n", MTD_DEV_TYPE(id->type), id->num);
 399                         free(current_mtd_dev);
 400                         return 1;
 401                 }
 402                 id->size = size;
 403                 INIT_LIST_HEAD(&id->link);
 404
 405                 DEBUGF("dev id: type = %d, num = %d, size = 0x%08lx, mtd_id = %s\n",
 406                                 id->type, id->num, id->size, id->mtd_id);
 407
 408                 /* partition */
 409                 part->name = "static";
 410                 part->auto_name = 0;
 411
 412 #if defined(CONFIG_JFFS2_PART_SIZE)
 413                 part->size = CONFIG_JFFS2_PART_SIZE;
 414 #else
 415                 part->size = SIZE_REMAINING;
 416 #endif
 417
 418 #if defined(CONFIG_JFFS2_PART_OFFSET)
 419                 part->offset = CONFIG_JFFS2_PART_OFFSET;
 420 #else
 421                 part->offset = 0x00000000;
 422 #endif
 423
 424                 part->sector_size = get_part_sector_size(id, part);
 425
 426                 part->dev = current_mtd_dev;
 427                 INIT_LIST_HEAD(&part->link);
 428
 429                 /* recalculate size if needed */
 430                 if (part->size == SIZE_REMAINING)
 431                         part->size = id->size - part->offset;
 432
 433                 DEBUGF("part  : name = %s, size = 0x%08lx, offset = 0x%08lx\n",
 434                                 part->name, part->size, part->offset);
 435
 436                 /* device */
 437                 current_mtd_dev->id = id;
 438                 INIT_LIST_HEAD(&current_mtd_dev->link);
 439                 current_mtd_dev->num_parts = 1;
 440                 INIT_LIST_HEAD(&current_mtd_dev->parts);
 441                 list_add(&part->link, &current_mtd_dev->parts);
 442         }
 443
 444         return 0;
 445 }
 446 #endif /* #ifndef CONFIG_CMD_MTDPARTS */
 447
 448 /**
 449  * Return pointer to the partition of a requested number from a requested
 450  * device.
 451  *
 452  * @param dev device that is to be searched for a partition
 453  * @param part_num requested partition number
 454  * @return pointer to the part_info, NULL otherwise
 455  */
 456 static struct part_info* jffs2_part_info(struct mtd_device *dev, unsigned int part_num)
 457 {
 458         struct list_head *entry;
 459         struct part_info *part;
 460         int num;
 461
 462         if (!dev)
 463                 return NULL;
 464
 465         DEBUGF("\n--- jffs2_part_info: partition number %d for device %s%d (%s)\n",
 466                         part_num, MTD_DEV_TYPE(dev->id->type),
 467                         dev->id->num, dev->id->mtd_id);
 468
 469         if (part_num >= dev->num_parts) {
 470                 printf("invalid partition number %d for device %s%d (%s)\n",
 471                                 part_num, MTD_DEV_TYPE(dev->id->type),
 472                                 dev->id->num, dev->id->mtd_id);
 473                 return NULL;
 474         }
 475
 476         /* locate partition number, return it */
 477         num = 0;
 478         list_for_each(entry, &dev->parts) {
 479                 part = list_entry(entry, struct part_info, link);
 480
 481                 if (part_num == num++) {
 482                         return part;
 483                 }
 484         }
 485
 486         return NULL;
 487 }
 488
 489 /***************************************************/
 490 /* U-boot commands                                 */
 491 /***************************************************/
 492
 493 /**
 494  * Routine implementing fsload u-boot command. This routine tries to load
 495  * a requested file from jffs2/cramfs filesystem on a current partition.
 496  *
 497  * @param cmdtp command internal data
 498  * @param flag command flag
 499  * @param argc number of arguments supplied to the command
 500  * @param argv arguments list
 501  * @return 0 on success, 1 otherwise
 502  */
 503 int do_jffs2_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 504 {
 505         char *fsname;
 506         char *filename;
 507         int size;
 508         struct part_info *part;
 509         ulong offset = load_addr;
 510
 511         /* pre-set Boot file name */
 512         if ((filename = getenv("bootfile")) == NULL) {
 513                 filename = "uImage";
 514         }
 515
 516         if (argc == 2) {
 517                 filename = argv[1];
 518         }
 519         if (argc == 3) {
 520                 offset = simple_strtoul(argv[1], NULL, 16);
 521                 load_addr = offset;
 522                 filename = argv[2];
 523         }
 524
 525         /* make sure we are in sync with env variables */
 526         if (mtdparts_init() !=0)
 527                 return 1;
 528
 529         if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){
 530
 531                 /* check partition type for cramfs */
 532                 fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2");
 533                 printf("### %s loading '%s' to 0x%lx\n", fsname, filename, offset);
 534
 535                 if (cramfs_check(part)) {
 536                         size = cramfs_load ((char *) offset, part, filename);
 537                 } else {
 538                         /* if this is not cramfs assume jffs2 */
 539                         size = jffs2_1pass_load((char *)offset, part, filename);
 540                 }
 541
 542                 if (size > 0) {
 543                         char buf[10];
 544                         printf("### %s load complete: %d bytes loaded to 0x%lx\n",
 545                                 fsname, size, offset);
 546                         sprintf(buf, "%x", size);
 547                         setenv("filesize", buf);
 548                 } else {
 549                         printf("### %s LOAD ERROR<%x> for %s!\n", fsname, size, filename);
 550                 }
 551
 552                 return !(size > 0);
 553         }
 554         return 1;
 555 }
 556
 557 /**
 558  * Routine implementing u-boot ls command which lists content of a given
 559  * directory on a current partition.
 560  *
 561  * @param cmdtp command internal data
 562  * @param flag command flag
 563  * @param argc number of arguments supplied to the command
 564  * @param argv arguments list
 565  * @return 0 on success, 1 otherwise
 566  */
 567 int do_jffs2_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 568 {
 569         char *filename = "/";
 570         int ret;
 571         struct part_info *part;
 572
 573         if (argc == 2)
 574                 filename = argv[1];
 575
 576         /* make sure we are in sync with env variables */
 577         if (mtdparts_init() !=0)
 578                 return 1;
 579
 580         if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){
 581
 582                 /* check partition type for cramfs */
 583                 if (cramfs_check(part)) {
 584                         ret = cramfs_ls (part, filename);
 585                 } else {
 586                         /* if this is not cramfs assume jffs2 */
 587                         ret = jffs2_1pass_ls(part, filename);
 588                 }
 589
 590                 return ret ? 0 : 1;
 591         }
 592         return 1;
 593 }
 594
 595 /**
 596  * Routine implementing u-boot fsinfo command. This routine prints out
 597  * miscellaneous filesystem informations/statistics.
 598  *
 599  * @param cmdtp command internal data
 600  * @param flag command flag
 601  * @param argc number of arguments supplied to the command
 602  * @param argv arguments list
 603  * @return 0 on success, 1 otherwise
 604  */
 605 int do_jffs2_fsinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 606 {
 607         struct part_info *part;
 608         char *fsname;
 609         int ret;
 610
 611         /* make sure we are in sync with env variables */
 612         if (mtdparts_init() !=0)
 613                 return 1;
 614
 615         if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){
 616
 617                 /* check partition type for cramfs */
 618                 fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2");
 619                 printf("### filesystem type is %s\n", fsname);
 620
 621                 if (cramfs_check(part)) {
 622                         ret = cramfs_info (part);
 623                 } else {
 624                         /* if this is not cramfs assume jffs2 */
 625                         ret = jffs2_1pass_info(part);
 626                 }
 627
 628                 return ret ? 0 : 1;
 629         }
 630         return 1;
 631 }
 632
 633 /***************************************************/
 634 U_BOOT_CMD(
 635         fsload, 3,      0,      do_jffs2_fsload,
 636         "load binary file from a filesystem image",
 637         "[ off ] [ filename ]\n"
 638         "    - load binary file from flash bank\n"
 639         "      with offset 'off'\n"
 640 );
 641 U_BOOT_CMD(
 642         ls,     2,      1,      do_jffs2_ls,
 643         "list files in a directory (default /)",
 644         "[ directory ]\n"
 645         "    - list files in a directory.\n"
 646 );
 647
 648 U_BOOT_CMD(
 649         fsinfo, 1,      1,      do_jffs2_fsinfo,
 650         "print information about filesystems",
 651         "    - print information about filesystems\n"
 652 );
 653 /***************************************************/