common/cmd_usbd.c

   1 /*
   2  * USB Downloader for SAMSUNG Platform
   3  *
   4  * Copyright (C) 2007-2008 Samsung Electronics
   5  * Minkyu Kang <mk7.kang@samsung.com>
   6  *
   7  */
   8
   9 #include <common.h>
  10 #include <usbd.h>
  11 #include <asm/errno.h>
  12 #include <malloc.h>
  13
  14 /* version of USB Downloader Application */
  15 #define APP_VERSION     "1.6.0"
  16
  17 #define OPS_READ        0
  18 #define OPS_WRITE       1
  19
  20 #ifdef CONFIG_CMD_MTDPARTS
  21 #include <jffs2/load_kernel.h>
  22 static struct part_info *parts[16];
  23 #endif
  24
  25 #ifdef CONFIG_UBIFS_MK
  26 #include <mkfs.ubifs.h>
  27 #endif
  28
  29 #ifdef CONFIG_UBINIZE
  30 #include <ubinize.h>
  31 #endif
  32
  33 #include <mbr.h>
  34
  35 static const char pszMe[] = "usbd: ";
  36
  37 static struct usbd_ops usbd_ops;
  38
  39 static unsigned int part_id;
  40 static unsigned int write_part = 0;
  41 static unsigned int fs_offset = 0x0;
  42
  43 #ifdef CONFIG_USE_YAFFS
  44 static unsigned int yaffs_len = 0;
  45 static unsigned char yaffs_data[2112];
  46 #define YAFFS_PAGE 2112
  47 #endif
  48
  49 #define NAND_PAGE_SIZE 2048
  50
  51 static unsigned long down_ram_addr;
  52
  53 static int down_mode;
  54
  55 /* cpu/${CPU} dependent */
  56 extern void do_reset(void);
  57
  58 /* common commands */
  59 extern int do_bootm(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
  60 extern int do_run(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]);
  61
  62 int mtdparts_init(void);
  63 int find_dev_and_part(const char*, struct mtd_device**, u8*, struct part_info**);
  64
  65 /* common/cmd_jffs2.c */
  66 extern struct list_head devices;
  67
  68 static u8 count_mtdparts(void)
  69 {
  70         struct list_head *dentry, *pentry;
  71         struct mtd_device *dev;
  72         u8 part_num = 0;
  73
  74         list_for_each(dentry, &devices) {
  75                 dev = list_entry(dentry, struct mtd_device, link);
  76
  77                 /* list partitions for given device */
  78                 list_for_each(pentry, &dev->parts)
  79                         part_num++;
  80         }
  81
  82         return part_num;
  83 }
  84
  85 #ifdef CONFIG_CMD_UBI
  86 static int check_ubi_mode(void)
  87 {
  88         char *env_ubifs;
  89         int ubi_mode;
  90
  91         env_ubifs = getenv("ubi");
  92         ubi_mode = !strcmp(env_ubifs, "enabled");
  93
  94         return ubi_mode;
  95 }
  96 #else
  97 #define check_ubi_mode()                0
  98 #endif
  99
 100 #ifdef CONFIG_MTD_PARTITIONS
 101 static int get_part_info(void)
 102 {
 103         struct mtd_device *dev;
 104         u8 out_partnum;
 105         char part_name[12];
 106         char nand_name[12];
 107         int i;
 108         int part_num;
 109         int ubi_mode = 0;
 110
 111 #if defined(CONFIG_CMD_NAND)
 112         sprintf(nand_name, "nand0");
 113 #elif defined(CONFIG_CMD_ONENAND)
 114         sprintf(nand_name, "onenand0");
 115 #else
 116         printf("Configure your NAND sub-system\n");
 117         return 0;
 118 #endif
 119
 120         if (mtdparts_init())
 121                 return 0;
 122
 123         ubi_mode = check_ubi_mode();
 124
 125         part_num = count_mtdparts();
 126         for (i = 0; i < part_num; i++) {
 127                 sprintf(part_name, "%s,%d", nand_name, i);
 128
 129                 if (find_dev_and_part(part_name, &dev, &out_partnum, &parts[i]))
 130                         return -EINVAL;
 131         }
 132
 133         return 0;
 134 }
 135
 136 static int get_part_id(char *name)
 137 {
 138         int nparts = count_mtdparts();
 139         int i;
 140
 141         for (i = 0; i < nparts; i++) {
 142                 if (strcmp(parts[i]->name, name) == 0)
 143                         return i;
 144         }
 145
 146         printf("Error: Unknown partition -> %s\n", name);
 147         return -1;
 148 }
 149 #else
 150 static int get_part_info(void)
 151 {
 152         printf("Error: Can't get patition information\n");
 153         return -EINVAL;
 154 }
 155
 156 static int get_part_id(char *name)
 157 {
 158         return 0;
 159 }
 160 #endif
 161
 162 static void boot_cmd(char *addr)
 163 {
 164         char *argv[] = { "bootm", addr };
 165         do_bootm(NULL, 0, 2, argv);
 166 }
 167
 168 #if defined(CONFIG_CMD_NAND)
 169 extern int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
 170 #elif defined(CONFIG_CMD_ONENAND)
 171 extern int do_onenand(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
 172 #endif
 173
 174 /* NAND erase and write using nand command */
 175 static int nand_cmd(int type, char *p1, char *p2, char *p3)
 176 {
 177         int ret = 1;
 178         char nand_name[12];
 179         int (*nand_func) (cmd_tbl_t *, int, int, char **);
 180
 181 #if defined(CONFIG_CMD_NAND)
 182         sprintf(nand_name, "nand");
 183         nand_func = do_nand;
 184 #elif defined(CONFIG_CMD_ONENAND)
 185         sprintf(nand_name, "onenand");
 186         nand_func = do_onenand;
 187 #else
 188         printf("Configure your NAND sub-system\n");
 189         return 0;
 190 #endif
 191
 192         if (type == 0) {
 193                 char *argv[] = {nand_name, "erase", p1, p2};
 194                 printf("%s %s %s %s\n", argv[0], argv[1], argv[2], argv[3]);
 195                 ret = nand_func(NULL, 0, 4, argv);
 196         } else if (type == 1) {
 197                 char *argv[] = {nand_name, "write", p1, p2, p3};
 198                 printf("%s %s %s %s %s\n", argv[0], argv[1], argv[2],
 199                                 argv[3], argv[4]);
 200                 ret = nand_func(NULL, 0, 5, argv);
 201         } else if (type == 2) {
 202                 char *argv[] = {nand_name, "write.yaffs", p1, p2, p3};
 203                 printf("%s %s %s %s %s\n", argv[0], argv[1], argv[2],
 204                                 argv[3], argv[4]);
 205                 ret = nand_func(NULL, 0, 5, argv);
 206         } else if (type == 3) {
 207                 char *argv[] = {nand_name, "lock", p1, p2};
 208                 printf("%s %s %s %s\n", argv[0], argv[1], argv[2], argv[3]);
 209                 ret = nand_func(NULL, 0, 4, argv);
 210         }
 211
 212         if (ret)
 213                 printf("Error: NAND Command\n");
 214
 215         return ret;
 216 }
 217
 218 #ifdef CONFIG_CMD_UBI
 219 int do_ubi(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
 220
 221 int ubi_cmd(int part, char *p1, char *p2, char *p3)
 222 {
 223         int ret = 1;
 224
 225         if (part == RAMDISK_PART_ID) {
 226                 char *argv[] = {"ubi", "write", p1, "rootfs.cramfs", p2, p3};
 227                 printf("%s %s %s %s %s %s\n", argv[0], argv[1], argv[2],
 228                                 argv[3], argv[4], argv[5]);
 229                 ret = do_ubi(NULL, 0, 6, argv);
 230         } else if (part == FILESYSTEM_PART_ID) {
 231                 char *argv[] = {"ubi", "write", p1, "factoryfs.cramfs", p2, p3};
 232                 printf("%s %s %s %s %s %s\n", argv[0], argv[1], argv[2],
 233                                 argv[3], argv[4], argv[5]);
 234                 ret = do_ubi(NULL, 0, 6, argv);
 235         } else if (part == FILESYSTEM2_PART_ID) {
 236                 char *argv[] = {"ubi", "write", p1, "datafs.ubifs", p2, p3};
 237                 printf("%s %s %s %s %s %s\n", argv[0], argv[1], argv[2],
 238                                 argv[3], argv[4], argv[5]);
 239                 ret = do_ubi(NULL, 0, 6, argv);
 240         }
 241
 242         return ret;
 243 }
 244 #endif
 245
 246 #ifdef CONFIG_CMD_MMC
 247 #include <mmc.h>
 248 #include <fat.h>
 249
 250 static struct mmc *mmc;
 251
 252 static int mmc_cmd(int ops, int dev_num, ulong start, lbaint_t cnt, void *addr)
 253 {
 254         int ret;
 255
 256         if (ops) {
 257                 printf("mmc write 0x%x 0x%x\n", start, cnt);
 258                 ret = mmc->block_dev.block_write(dev_num, start, cnt, addr);
 259         } else {
 260                 printf("mmc read 0x%x 0x%x\n", start, cnt);
 261                 ret = mmc->block_dev.block_read(dev_num, start, cnt, addr);
 262         }
 263
 264         if (ret > 0)
 265                 ret = 0;
 266         else
 267                 ret = 1;
 268
 269         return ret;
 270 }
 271
 272 #define NORMAL_PARTITION        0
 273 #define EXTEND_PARTITION        1
 274
 275 #define EXTEND_PART_TYPE        5
 276
 277 #define EXTEND_MAX_PART         32
 278
 279 static unsigned int cur_blk_offset;
 280 static unsigned int cur_part_size;
 281 static unsigned int cur_part;
 282
 283 static unsigned int mmc_parts;
 284 static unsigned int mmc_part_write;
 285
 286 static u8 part_mode = 0;
 287
 288 struct partition_info {
 289         u32 size;
 290         u32 checksum;
 291         u32 res;
 292 } __attribute__((packed));
 293
 294 struct partition_header {
 295         u8                      fat32head[16];  /* RFSHEAD identifier */
 296         struct partition_info   partition[EXTEND_MAX_PART];
 297         u8                      res[112];       /* only data (without MBR) */
 298 } __attribute__((packed));
 299
 300 struct mul_partition_info {
 301         u32 lba_begin;          /* absolute address from 0 block */
 302         u32 num_sectors;
 303 } __attribute__((packed));
 304
 305 #define MBR_OFFSET      0x10
 306
 307 struct partition_header part_info;
 308 struct mbr mbr_info;
 309 struct mul_partition_info mul_info[EXTEND_MAX_PART];
 310
 311 static int write_mmc_partition(struct usbd_ops *usbd, u32 *ram_addr, u32 len)
 312 {
 313         unsigned int blocks;
 314         int i;
 315         int loop;
 316         u32 cnt;
 317         int ret;
 318
 319         if (cur_part_size > len) {
 320                 blocks = len / usbd->mmc_blk;
 321                 ret = -1;
 322         } else {
 323                 blocks = cur_part_size / usbd->mmc_blk;
 324                 ret = len - cur_part_size;
 325         }
 326
 327         if (len % usbd->mmc_blk)
 328                 blocks++;
 329
 330         loop = blocks / usbd->mmc_max;
 331         if (blocks % usbd->mmc_max)
 332                 loop++;
 333
 334         for (i = 0; i < loop; i++) {
 335                 if (i == 0) {
 336                         cnt = blocks % usbd->mmc_max;
 337                         if (cnt == 0)
 338                                 cnt = usbd->mmc_max;
 339                 } else {
 340                         cnt = usbd->mmc_max;
 341                 }
 342
 343                 mmc_cmd(OPS_WRITE, usbd->mmc_dev, cur_blk_offset,
 344                                 cnt, (void *)*ram_addr);
 345
 346                 cur_blk_offset += cnt;
 347
 348                 *ram_addr += (cnt * usbd->mmc_blk);
 349         }
 350
 351         return ret;
 352 }
 353
 354 static int write_file_mmc(struct usbd_ops *usbd, u32 len)
 355 {
 356         u32 ram_addr;
 357         int i;
 358         int ret;
 359         struct mbr *mbr;
 360
 361         if (!usbd->mmc_total) {
 362                 printf("MMC is not supported!\n");
 363                 return 0;
 364         }
 365
 366         ram_addr = (u32)down_ram_addr;
 367
 368         if (cur_blk_offset == 0) {
 369                 boot_sector *bs;
 370                 u32 mbr_blk_size;
 371
 372                 memcpy(&part_info, (void *)ram_addr,
 373                                 sizeof(struct partition_header));
 374
 375                 ram_addr += sizeof(struct partition_header);
 376                 len -= sizeof(struct partition_header);
 377                 mbr = (struct mbr *)ram_addr;
 378                 mbr_blk_size = mbr->parts[0].lba;
 379
 380                 if (mbr->parts[0].partition_type != EXTEND_PART_TYPE) {
 381                         part_mode = NORMAL_PARTITION;
 382
 383                         /* modify sectors of p1 */
 384                         mbr->parts[0].nsectors = usbd->mmc_total -
 385                                         (mbr_blk_size +
 386                                         mbr->parts[1].nsectors +
 387                                         mbr->parts[2].nsectors +
 388                                         mbr->parts[3].nsectors);
 389
 390                         mmc_parts++;
 391
 392                         /* modify lba_begin of p2 and p3 and p4 */
 393                         for (i = 1; i < 4; i++) {
 394                                 if (part_info.partition[i].size == 0)
 395                                         break;
 396
 397                                 mmc_parts++;
 398                                 mbr->parts[i].lba =
 399                                         mbr->parts[i - 1].lba +
 400                                         mbr->parts[i - 1].nsectors;
 401                         }
 402
 403                         /* copy MBR */
 404                         memcpy(&mbr_info, mbr, sizeof(struct mbr));
 405
 406                         printf("Total Size: 0x%08x #parts %d\n",
 407                                         (unsigned int)usbd->mmc_total,
 408                                         mmc_parts);
 409                         for (i = 0; i < mmc_parts; i++) {
 410                                 printf("p%d\t0x%08x\t0x%08x\n", i + 1,
 411                                         mbr_info.parts[i].lba,
 412                                         mbr_info.parts[i].nsectors);
 413                         }
 414
 415                         /* write MBR */
 416                         mmc_cmd(OPS_WRITE, usbd->mmc_dev, 0,
 417                                         mbr_blk_size, (void *)ram_addr);
 418
 419                         ram_addr += mbr_blk_size * usbd->mmc_blk;
 420                         len -= mbr_blk_size * usbd->mmc_blk;
 421
 422                         cur_blk_offset = mbr_blk_size;
 423                         cur_part = 0;
 424                         cur_part_size = part_info.partition[0].size;
 425
 426                         /* modify p1's total sector */
 427                         bs = (boot_sector *)ram_addr;
 428                         bs->total_sect = mbr_info.parts[0].nsectors;
 429
 430                         printf("\nWrite Partition %d.. %d blocks\n",
 431                                 cur_part + 1,
 432                                 part_info.partition[cur_part].size /
 433                                 (int)usbd->mmc_blk);
 434                 } else {
 435                         part_mode = EXTEND_PARTITION;
 436
 437                         for (i = 0; i < EXTEND_MAX_PART; i++) {
 438                                 if (part_info.partition[i].size == 0)
 439                                         break;
 440                                 mmc_parts++;
 441                         }
 442
 443                         if (mmc_parts == 0)
 444                                 return -1;
 445                         else
 446                                 printf("found %d partitions\n", mmc_parts);
 447
 448                         /* build partition table */
 449
 450                         mul_info[0].num_sectors =
 451                                 usbd->mmc_total - mbr_blk_size;
 452                         for (i = 1; i < mmc_parts; i++) {
 453                                 mul_info[i].num_sectors =
 454                                         part_info.partition[i].res +
 455                                         mbr_blk_size; /* add MBR */
 456                         }
 457
 458                         for (i = 1; i < mmc_parts; i++) {
 459                                 mul_info[0].num_sectors -=
 460                                         mul_info[i].num_sectors;
 461                         }
 462
 463                         mul_info[0].lba_begin = mbr_blk_size;
 464                         for (i = 1; i < mmc_parts; i++) {
 465                                 mul_info[i].lba_begin =
 466                                         mul_info[i-1].lba_begin +
 467                                         mul_info[i-1].num_sectors;
 468                         }
 469
 470                         /* modify MBR of extended partition: p1 */
 471                         mbr->parts[0].nsectors =
 472                                 usbd->mmc_total - mbr_blk_size;
 473
 474                         /* modify MBR of first logical partition: p5 */
 475                         mbr = (struct mbr *)
 476                                 (ram_addr + mbr_blk_size * usbd->mmc_blk);
 477
 478                         mbr->parts[0].nsectors =
 479                                 mul_info[0].num_sectors - mbr_blk_size;
 480                         mbr->parts[1].lba=
 481                                 mul_info[1].lba_begin - mbr_blk_size;
 482
 483                         /* modify BPB data of p5 */
 484                         bs = (boot_sector *)
 485                                 ((u32)mbr + mbr_blk_size * usbd->mmc_blk);
 486                         memset(&bs->sectors, 0, 2);
 487                         bs->total_sect = mbr->parts[0].nsectors;
 488
 489                         printf("Total Size: 0x%08x #parts %d\n",
 490                                         (unsigned int)usbd->mmc_total,
 491                                         mmc_parts);
 492                         for (i = 0; i < mmc_parts; i++) {
 493                                 printf("p%d\t0x%08x\t0x%08x\n", i + 1,
 494                                         mul_info[i].lba_begin,
 495                                         mul_info[i].num_sectors);
 496                         }
 497
 498                         cur_blk_offset = 0;
 499                         cur_part = 0;
 500                         cur_part_size = part_info.partition[0].size;
 501
 502                         printf("\nWrite Partition %d.. %d blocks\n",
 503                                 cur_part + 1,
 504                                 part_info.partition[cur_part].size /
 505                                 (int)usbd->mmc_blk);
 506                 }
 507         }
 508
 509         for (i = cur_part; i < mmc_parts; i++) {
 510                 ret = write_mmc_partition(usbd, &ram_addr, len);
 511
 512                 if (ret < 0) {
 513                         cur_part_size -= len;
 514                         break;
 515                 } else {
 516                         cur_part++;
 517                         cur_part_size =
 518                                 part_info.partition[cur_part].size;
 519
 520                         if (part_mode == NORMAL_PARTITION) {
 521                                 cur_blk_offset =
 522                                         mbr_info.parts[cur_part].lba;
 523                         } else {
 524                                 cur_blk_offset =
 525                                         mul_info[cur_part].lba_begin;
 526                                 /* modify MBR */
 527                                 if (cur_part < mmc_parts) {
 528                                         mbr = (struct mbr *)ram_addr;
 529                                         mbr->parts[1].lba=
 530                                                 mul_info[cur_part+1].lba_begin -
 531                                                 mbr->parts[0].lba;
 532                                 }
 533                         }
 534
 535                         if (ret == 0)
 536                                 break;
 537                         else
 538                                 len = ret;
 539
 540                         printf("\nWrite Partition %d.. %d blocks\n",
 541                                 cur_part + 1,
 542                                 part_info.partition[cur_part].size /
 543                                 (int)usbd->mmc_blk);
 544                 }
 545         }
 546
 547         return 0;
 548 }
 549
 550 static int write_file_mmc_part(struct usbd_ops *usbd, u32 len)
 551 {
 552         u32 ram_addr;
 553         u32 ofs;
 554         int i;
 555         struct mbr *mbr;
 556         u32 mbr_blk_size;
 557
 558         ram_addr = (u32)down_ram_addr;
 559         mbr = &mbr_info;
 560
 561         if (cur_blk_offset == 0) {
 562                 /* read MBR */
 563                 mmc_cmd(OPS_READ, usbd->mmc_dev, 0,
 564                         sizeof(struct mbr)/usbd->mmc_blk, (void *)mbr);
 565
 566                 mbr_blk_size = mbr->parts[0].lba;
 567
 568                 if (mbr->parts[0].partition_type != EXTEND_PART_TYPE) {
 569                         part_mode = NORMAL_PARTITION;
 570
 571                         for (i = 0; i < 4; i++) {
 572                                 printf("p%d\t0x%08x\t0x%08x\n", i + 1,
 573                                         mbr_info.parts[i].lba,
 574                                         mbr_info.parts[i].nsectors);
 575                         }
 576
 577                         cur_blk_offset =
 578                                 mbr->parts[mmc_part_write - 1].lba;
 579                         cur_part = mmc_part_write - 1;
 580                         cur_part_size =
 581                                 usbd->mmc_blk *
 582                                 mbr->parts[mmc_part_write - 1].nsectors;
 583
 584                         if (mmc_part_write == 1) {
 585                                 ram_addr += sizeof(struct mbr);
 586                                 cur_blk_offset += sizeof(struct mbr) /
 587                                         usbd->mmc_blk;
 588                                 len -= sizeof(struct mbr);
 589                         }
 590                 } else {
 591                         part_mode = EXTEND_PARTITION;
 592
 593                         for (i = 1; i < mmc_part_write; i++) {
 594                                 ofs = mbr->parts[0].lba + mbr->parts[1].lba;
 595                                 printf("P%d start blk: 0x%x, size: 0x%x\n", i,
 596                                         ofs, mbr->parts[1].nsectors);
 597                                 mmc_cmd(OPS_READ, usbd->mmc_dev, ofs,
 598                                         (sizeof(struct mbr) / usbd->mmc_blk),
 599                                         (void *)mbr);
 600                         }
 601
 602                         ofs = mbr->parts[0].lba + mbr->parts[1].lba;
 603                         printf("P%d start blk: 0x%x, size: 0x%x\n", i,
 604                                 ofs, mbr->parts[1].nsectors);
 605
 606                         ofs += mbr_blk_size; /* skip MBR */
 607                         cur_blk_offset = ofs;
 608                         cur_part = mmc_part_write - 1;
 609                         cur_part_size =
 610                                 usbd->mmc_blk *
 611                                 mbr->parts[1].nsectors;
 612
 613                         if (mmc_part_write == 1) {
 614                                 boot_sector *bs;
 615                                 u32 total_sect;
 616                                 /* modify BPB data of p1 */
 617                                 mmc_cmd(OPS_READ, usbd->mmc_dev, cur_blk_offset,
 618                                         (sizeof(struct mbr) / usbd->mmc_blk),
 619                                         mbr);
 620
 621                                 bs = (boot_sector *)mbr;
 622                                 total_sect = bs->total_sect;
 623
 624                                 bs = (boot_sector *)ram_addr;
 625                                 memset(&bs->sectors, 0, 2);
 626                                 bs->total_sect = total_sect;
 627                         }
 628                 }
 629         }
 630
 631         printf("\nWrite Partition %d.. %d blocks\n",
 632                 cur_part + 1,
 633                 len / (int)usbd->mmc_blk);
 634
 635         write_mmc_partition(usbd, &ram_addr, len);
 636
 637         return 0;
 638 }
 639 #endif
 640
 641 static unsigned int mbr_offset[16];
 642 static int mbr_parts = 0;
 643
 644 static unsigned long memsize_parse (const char *const ptr, const char **retptr)
 645 {
 646         unsigned long ret = simple_strtoul(ptr, (char **)retptr, 0);
 647
 648         switch (**retptr) {
 649                 case 'G':
 650                 case 'g':
 651                         ret <<= 10;
 652                 case 'M':
 653                 case 'm':
 654                         ret <<= 10;
 655                 case 'K':
 656                 case 'k':
 657                         ret <<= 10;
 658                         (*retptr)++;
 659                 default:
 660                         break;
 661         }
 662
 663         return ret;
 664 }
 665
 666 static void set_mbr_info(struct usbd_ops *usbd, char *ramaddr, u32 len)
 667 {
 668         char mbr_str[256];
 669         char save[16][16];
 670         char *p;
 671         char *tok;
 672         unsigned int size[16];
 673         int i = 0;
 674
 675         strncpy(mbr_str, ramaddr, len);
 676         p = mbr_str;
 677
 678         for (i = 0; ; i++, p = NULL) {
 679                 tok = strtok(p, ",");
 680                 if (tok == NULL)
 681                         break;
 682                 strcpy(save[i], tok);
 683                 printf("part%d: %s\n", i, save[i]);
 684         }
 685
 686         mbr_parts = i;
 687         printf("find %d partitions\n", mbr_parts);
 688
 689         for (i = 0; i < mbr_parts; i++) {
 690                 p = save[i];
 691                 size[i] = memsize_parse(p, (const char **)&p) / 512;
 692         }
 693
 694         puts("save the MBR Table...\n");
 695         set_mbr_table(0x800, mbr_parts, size, mbr_offset);
 696 }
 697
 698 static int write_mmc_image(struct usbd_ops *usbd, unsigned int len, int part_num)
 699 {
 700         int ret = 0;
 701
 702         if (mbr_parts <= part_num) {
 703                 printf("Error: MBR table have %d partitions (request %d)\n",
 704                                 mbr_parts, part_num);
 705                 return 1;
 706         }
 707
 708 #if 0
 709         /* modify size of UMS partition */
 710         if (part_num == 4 && fs_offset == 0) {
 711                 boot_sector *bs;
 712                 bs = (boot_sector *)down_ram_addr;
 713                 memset(&bs->sectors, 0, 2);
 714                 bs->total_sect = usbd->mmc_total - mbr_offset[part_num];
 715         }
 716 #endif
 717         ret = mmc_cmd(OPS_WRITE, usbd->mmc_dev,
 718                         mbr_offset[part_num] + fs_offset,
 719                         len / usbd->mmc_blk,
 720                         (void *)down_ram_addr);
 721
 722         fs_offset += (len / usbd->mmc_blk);
 723
 724         return ret;
 725 }
 726
 727 static int write_fat_file(struct usbd_ops *usbd, char *file_name,
 728                         int part_id, int len)
 729 {
 730 #ifdef CONFIG_FAT_WRITE
 731         int ret;
 732
 733         ret = fat_register_device(&mmc->block_dev, part_id);
 734         if (ret < 0) {
 735                 printf("error : fat_register_divce\n");
 736                 return 0;
 737         }
 738
 739         ret = file_fat_write(file_name, (void *)down_ram_addr, len);
 740         if (ret < 0) {
 741                 printf("error : writing uImage\n");
 742                 return 0;
 743         }
 744 #else
 745         printf("error: doesn't support fat_write\n");
 746 #endif
 747         return 0;
 748 }
 749
 750 static int write_file_system(char *ramaddr, ulong len, char *offset,
 751                 char *length, int part_num, int ubi_update)
 752 {
 753 #ifdef CONFIG_USE_YAFFS
 754         int actual_len = 0;
 755         int yaffs_write = 0;
 756 #endif
 757         int ret = 0;
 758
 759 #ifdef CONFIG_CMD_UBI
 760         /* UBI Update */
 761         if (ubi_update) {
 762                 sprintf(length, "0x%x", (uint)len);
 763                 ret = ubi_cmd(part_id, ramaddr, length, "cont");
 764                 return ret;
 765         }
 766 #endif
 767
 768         /* Erase entire partition at the first writing */
 769         if (write_part == 0 && ubi_update == 0) {
 770                 sprintf(offset, "0x%x", (uint)parts[part_num]->offset);
 771                 sprintf(length, "0x%x", (uint)parts[part_num]->size);
 772                 nand_cmd(0, offset, length, NULL);
 773         }
 774
 775 #ifdef CONFIG_USE_YAFFS
 776         /* if using yaffs, wirte size must be 2112*X
 777          * so, must have to realloc, and writing */
 778         if (!strcmp("yaffs", getenv(parts[part_num]->name))) {
 779                 yaffs_write = 1;
 780
 781                 memcpy((void *)down_ram_addr, yaffs_data, yaffs_len);
 782
 783                 actual_len = len + yaffs_len;
 784                 yaffs_len = actual_len % YAFFS_PAGE;
 785                 len = actual_len - yaffs_len;
 786
 787                 memset(yaffs_data, 0x00, YAFFS_PAGE);
 788                 memcpy(yaffs_data, (char *)down_ram_addr + len, yaffs_len);
 789         }
 790 #endif
 791
 792         sprintf(offset, "0x%x", (uint)(parts[part_num]->offset + fs_offset));
 793         sprintf(length, "0x%x", (uint)len);
 794
 795 #ifdef CONFIG_USE_YAFFS
 796         if (yaffs_write)
 797                 ret = nand_cmd(2, ramaddr, offset, length);
 798         else
 799                 ret = nand_cmd(1, ramaddr, offset, length);
 800
 801         if (!strcmp("yaffs", getenv(parts[part_num]->name)))
 802                 fs_offset += len / YAFFS_PAGE * NAND_PAGE_SIZE;
 803         else
 804                 fs_offset += len;
 805
 806 #else
 807         fs_offset += len;
 808         ret = nand_cmd(1, ramaddr, offset, length);
 809 #endif
 810
 811         return ret;
 812 }
 813
 814 static int qboot_erase = 0;
 815
 816 /* Erase the qboot */
 817 static void erase_qboot_area(void)
 818 {
 819         char offset[12], length[12];
 820         int qboot_id;
 821
 822         if (qboot_erase)
 823                 return;
 824
 825         qboot_id = get_part_id("qboot");
 826
 827         if (qboot_id != -1) {
 828                 printf("\nCOMMAND_ERASE_QBOOT\n");
 829                 sprintf(offset, "%x", parts[qboot_id]->offset);
 830                 sprintf(length, "%x", parts[qboot_id]->size);
 831                 nand_cmd(0, offset, length, NULL);
 832                 qboot_erase = 1;
 833         }
 834 }
 835
 836 /* Parsing received data packet and Process data */
 837 static int process_data(struct usbd_ops *usbd)
 838 {
 839         unsigned int cmd = 0, arg = 0, ofs = 0, len = 0, flag = 0;
 840         char offset[12], length[12], ramaddr[12];
 841         int recvlen = 0;
 842         unsigned int blocks = 0;
 843         int ret = 0;
 844         int ubi_update = 0;
 845         int ubi_mode = 0;
 846         int img_type;
 847
 848         sprintf(ramaddr, "0x%x", (uint) down_ram_addr);
 849
 850         /* Parse command */
 851         cmd  = *((ulong *) usbd->rx_data + 0);
 852         arg  = *((ulong *) usbd->rx_data + 1);
 853         len  = *((ulong *) usbd->rx_data + 2);
 854         flag = *((ulong *) usbd->rx_data + 3);
 855
 856         /* Reset tx buffer */
 857         memset(usbd->tx_data, 0, sizeof(usbd->tx_data));
 858
 859         ubi_mode = check_ubi_mode();
 860
 861         switch (cmd) {
 862         case COMMAND_DOWNLOAD_IMAGE:
 863                 printf("\nCOMMAND_DOWNLOAD_IMAGE\n");
 864
 865 #ifdef CONFIG_USE_YAFFS
 866                 usbd->recv_setup((char *)down_ram_addr + yaffs_len, (int)len);
 867                 printf("Download to 0x%08x, %d bytes\n",
 868                                 (uint)down_ram_addr + yaffs_len, (int)len);
 869 #else
 870                 if (arg)
 871                         down_ram_addr = usbd->ram_addr + 0x1000000;
 872                 else
 873                         down_ram_addr = usbd->ram_addr;
 874
 875                 usbd->recv_setup((char *)down_ram_addr, (int)len);
 876                 printf("Download to 0x%08x, %d bytes\n",
 877                                 (uint)down_ram_addr, (int)len);
 878 #endif
 879                 /* response */
 880                 usbd->send_data(usbd->tx_data, usbd->tx_len);
 881
 882                 /* Receive image by using dma */
 883                 recvlen = usbd->recv_data();
 884                 if (recvlen < len) {
 885                         printf("Error: wrong image size -> %d/%d\n",
 886                                         (int)recvlen, (int)len);
 887
 888                         /* Retry this commad */
 889                         *((ulong *) usbd->tx_data) = STATUS_RETRY;
 890                 } else
 891                         *((ulong *) usbd->tx_data) = STATUS_DONE;
 892
 893                 usbd->send_data(usbd->tx_data, usbd->tx_len);
 894                 return 1;
 895
 896         /* Report partition info */
 897         case COMMAND_PARTITION_SYNC:
 898                 part_id = arg;
 899
 900 #ifdef CONFIG_CMD_UBI
 901                 if (ubi_mode) {
 902                         if (part_id == RAMDISK_PART_ID ||
 903                             part_id == FILESYSTEM_PART_ID ||
 904                             part_id == FILESYSTEM2_PART_ID) {
 905                                 /* change to yaffs style */
 906                                 get_part_info();
 907                         }
 908                 } else {
 909                         if (part_id == FILESYSTEM3_PART_ID) {
 910                                 /* change ubi style */
 911                                 get_part_info();
 912                         }
 913                 }
 914 #endif
 915
 916                 if (part_id == FILESYSTEM3_PART_ID)
 917                         part_id = get_part_id("UBI");
 918                 else if (part_id == MODEM_PART_ID)
 919                         part_id = get_part_id("modem");
 920                 else if (part_id == KERNEL_PART_ID)
 921                         part_id = get_part_id("kernel");
 922                 else if (part_id == BOOT_PART_ID)
 923                         part_id = get_part_id("bootloader");
 924 #ifdef CONFIG_MIRAGE
 925                 if (part_id)
 926                         part_id--;
 927 #endif
 928                 printf("COMMAND_PARTITION_SYNC - Part%d\n", part_id);
 929
 930                 blocks = parts[part_id]->size / 1024 / 128;
 931                 printf("COMMAND_PARTITION_SYNC - Part%d, %d blocks\n",
 932                                 part_id, blocks);
 933
 934                 *((ulong *) usbd->tx_data) = blocks;
 935                 usbd->send_data(usbd->tx_data, usbd->tx_len);
 936                 return 1;
 937
 938         case COMMAND_WRITE_PART_0:
 939                 /* Do nothing */
 940                 printf("COMMAND_WRITE_PART_0\n");
 941                 return 1;
 942
 943         case COMMAND_WRITE_PART_1:
 944                 printf("COMMAND_WRITE_PART_BOOT\n");
 945                 part_id = get_part_id("bootloader");
 946                 img_type = IMG_BOOT;
 947                 break;
 948
 949         case COMMAND_WRITE_PART_2:
 950         case COMMAND_ERASE_PARAMETER:
 951                 printf("COMMAND_PARAMETER - not support!\n");
 952                 break;
 953
 954         case COMMAND_WRITE_PART_3:
 955                 printf("COMMAND_WRITE_KERNEL\n");
 956                 part_id = get_part_id("kernel");
 957                 img_type = IMG_KERNEL;
 958                 break;
 959
 960         case COMMAND_WRITE_PART_4:
 961                 printf("COMMAND_WRITE_ROOTFS\n");
 962                 part_id = get_part_id("Root");
 963                 img_type = IMG_FILESYSTEM;
 964                 ubi_update = arg;
 965                 break;
 966
 967         case COMMAND_WRITE_PART_5:
 968                 printf("COMMAND_WRITE_FACTORYFS\n");
 969                 part_id = get_part_id("Fact");
 970                 img_type = IMG_FILESYSTEM;
 971                 ubi_update = arg;
 972                 break;
 973
 974         case COMMAND_WRITE_PART_6:
 975                 printf("COMMAND_WRITE_DATAFS\n");
 976                 part_id = get_part_id("Data");
 977                 img_type = IMG_FILESYSTEM;
 978                 ubi_update = arg;
 979                 break;
 980
 981         case COMMAND_WRITE_PART_7:
 982                 printf("COMMAND_WRITE_UBI\n");
 983                 part_id = get_part_id("UBI");
 984                 img_type = IMG_FILESYSTEM;
 985                 ubi_update = 0;
 986                 /* someday, it will be deleted */
 987                 get_part_info();
 988                 break;
 989
 990         case COMMAND_WRITE_PART_8:
 991                 printf("COMMAND_WRITE_MODEM\n");
 992                 part_id = get_part_id("modem");
 993                 img_type = IMG_MODEM;
 994                 break;
 995
 996 #ifdef CONFIG_CMD_MMC
 997         case COMMAND_WRITE_PART_9:
 998                 printf("COMMAND_WRITE_MMC\n");
 999                 img_type = IMG_MMC;
1000                 mmc_part_write = arg;
1001                 break;
1002 #endif
1003
1004         case COMMAND_WRITE_IMG_0:
1005                 printf("COMMAND_WRITE_MBR\n");
1006                 img_type = IMG_MBR;
1007                 break;
1008
1009         case COMMAND_WRITE_IMG_1:
1010                 printf("COMMAND_WRITE_BOOTLOADER\n");
1011                 img_type = IMG_BOOTLOADER;
1012                 break;
1013
1014         case COMMAND_WRITE_IMG_2:
1015                 printf("COMMAND_WRITE_KERNEL\n");
1016                 img_type = IMG_KERNEL_V2;
1017                 part_id = 2;
1018                 break;
1019
1020         case COMMAND_WRITE_IMG_3:
1021                 printf("COMMAND_WRITE_MODEM\n");
1022                 img_type = IMG_MODEM_V2;
1023                 part_id = 2;
1024                 break;
1025
1026         case COMMAND_WRITE_IMG_4:
1027                 printf("COMMAND_WRITE_BOOT_PART\n");
1028                 part_id = 1;
1029                 img_type = IMG_V2;
1030                 break;
1031
1032         case COMMAND_WRITE_IMG_5:
1033                 printf("COMMAND_WRITE_SYSTEM_PART\n");
1034                 part_id = 2;
1035                 img_type = IMG_V2;
1036                 break;
1037
1038         case COMMAND_WRITE_IMG_6:
1039                 printf("COMMAND_WRITE_UMS_PART\n");
1040                 part_id = 4;
1041                 img_type = IMG_V2;
1042                 break;
1043
1044         case COMMAND_WRITE_UBI_INFO:
1045                 printf("COMMAND_WRITE_UBI_INFO\n");
1046
1047                 if (ubi_mode) {
1048 #ifdef CONFIG_CMD_UBI
1049                         part_id = arg-1;
1050                         sprintf(length, "0x%x", (uint)len);
1051                         ret = ubi_cmd(part_id, ramaddr, length, "begin");
1052                 } else {
1053 #endif
1054                         printf("Error: Not UBI mode\n");
1055                         ret = 1;
1056                 }
1057
1058                 *((ulong *) usbd->tx_data) = ret;
1059                 /* Write image success -> Report status */
1060                 usbd->send_data(usbd->tx_data, usbd->tx_len);
1061
1062                 return !ret;
1063         /* Download complete -> reset */
1064         case COMMAND_RESET_PDA:
1065                 printf("\nDownload finished and Auto reset!\nWait........\n");
1066
1067                 /* Stop USB */
1068                 usbd->usb_stop();
1069
1070                 if (usbd->cpu_reset)
1071                         usbd->cpu_reset();
1072                 else
1073                         do_reset();
1074
1075                 return 0;
1076
1077         /* Error */
1078         case COMMAND_RESET_USB:
1079                 printf("\nError is occured!(maybe previous step)->\
1080                                 Turn off and restart!\n");
1081
1082                 /* Stop USB */
1083                 usbd->usb_stop();
1084                 return 0;
1085
1086         case COMMAND_RAM_BOOT:
1087                 usbd->usb_stop();
1088                 boot_cmd(ramaddr);
1089                 return 0;
1090
1091         case COMMAND_RAMDISK_MODE:
1092                 printf("COMMAND_RAMDISK_MODE\n");
1093 #ifdef CONFIG_RAMDISK_ADDR
1094                 if (arg) {
1095                         down_ram_addr = usbd->ram_addr;
1096                 } else {
1097                         down_ram_addr = CONFIG_RAMDISK_ADDR;
1098                         run_command("run ramboot", 0);
1099                 }
1100 #endif
1101                 return 1;
1102
1103 #ifdef CONFIG_DOWN_PHONE
1104         case COMMAND_DOWN_PHONE:
1105                 printf("COMMAND_RESET_PHONE\n");
1106
1107                 usbd_phone_down();
1108
1109                 *((ulong *) usbd->tx_data) = STATUS_DONE;
1110                 usbd->send_data(usbd->tx_data, usbd->tx_len);
1111                 return 1;
1112
1113         case COMMAND_CHANGE_USB:
1114                 printf("COMMAND_CHANGE_USB\n");
1115
1116                 /* Stop USB */
1117                 usbd->usb_stop();
1118
1119                 usbd_path_change();
1120
1121                 do_reset();
1122                 return 0;
1123 #endif
1124         case COMMAND_CSA_CLEAR:
1125                 printf("COMMAND_CSA_CLEAR\n");
1126                 part_id = get_part_id("csa");
1127                 img_type = IMG_MODEM;
1128                 break;
1129
1130         case COMMAND_PROGRESS:
1131                 if (usbd->set_progress)
1132                         usbd->set_progress(arg);
1133                 return 1;
1134
1135         default:
1136                 printf("Error: Unknown command -> (%d)\n", (int)cmd);
1137                 return 1;
1138         }
1139
1140         /* Erase and Write to NAND */
1141         switch (img_type) {
1142         case IMG_BOOT:
1143                 ofs = parts[part_id]->offset;
1144 #ifdef CONFIG_S5PC1XX
1145                 /* Workaround: for prevent revision mismatch */
1146                 if (cpu_is_s5pc110() && (down_mode != MODE_FORCE)) {
1147                         int img_rev = 1;
1148                         long *img_header = (long *)down_ram_addr;
1149
1150                         if (*img_header == 0xea000012)
1151                                 img_rev = 0;
1152                         else if (*(img_header + 0x400) == 0xea000012)
1153                                 img_rev = 2;
1154
1155                         if (img_rev != s5p_get_cpu_rev()) {
1156                                 printf("CPU revision mismatch!\n"
1157                                         "bootloader is %s%s\n"
1158                                         "download image is %s%s\n",
1159                                         s5p_get_cpu_rev() ? "EVT1" : "EVT0",
1160                                         s5p_get_cpu_rev() == 2 ? "-Fused" : "",
1161                                         img_rev ? "EVT1" : "EVT0",
1162                                         img_rev == 2 ? "-Fused" : "");
1163                                 *((ulong *) usbd->tx_data) = STATUS_ERROR;
1164                                 usbd->send_data(usbd->tx_data, usbd->tx_len);
1165                                 return 0;
1166                         }
1167                 }
1168 #endif
1169 #ifdef CONFIG_SBOOT
1170                 /* Only u-boot.bin is allowed */
1171                 {
1172                         long *img_header = (long *)down_ram_addr;
1173
1174                         if (*img_header != 0xea000018) {
1175                                 printf("\n!!! ERROR !!!\n"
1176                                         "Please download the u-boot.bin.\n"
1177                                         "Other images are not allowed.\n\n");
1178                                 *((ulong *) usbd->tx_data) = STATUS_ERROR;
1179                                 usbd->send_data(usbd->tx_data, usbd->tx_len);
1180                                 return 0;
1181                         }
1182                 }
1183 #endif
1184 #if defined(CONFIG_ENV_IS_IN_NAND) || defined(CONFIG_ENV_IS_IN_ONENAND)
1185                 /* Erase the environment also when write bootloader */
1186                 {
1187                         int param_id;
1188                         param_id = get_part_id("params");
1189
1190                         if (param_id == -1) {
1191                                 sprintf(offset, "%x", CONFIG_ENV_ADDR);
1192                                 sprintf(length, "%x", CONFIG_ENV_SIZE);
1193                         } else {
1194                                 sprintf(offset, "%x", parts[param_id]->offset);
1195                                 sprintf(length, "%x", parts[param_id]->size);
1196                         }
1197                         nand_cmd(0, offset, length, NULL);
1198                 }
1199 #endif
1200                 sprintf(offset, "%x", (uint)ofs);
1201                 if (ofs != 0)
1202                         sprintf(length, "%x", parts[part_id]->size - (uint)ofs);
1203                 else
1204                         sprintf(length, "%x", parts[part_id]->size);
1205
1206                 /* Erase */
1207                 nand_cmd(0, offset, length, NULL);
1208                 /* Write */
1209                 sprintf(length, "%x", (unsigned int) len);
1210                 ret = nand_cmd(1, ramaddr, offset, length);
1211                 break;
1212
1213         case IMG_KERNEL:
1214                 sprintf(offset, "%x", parts[part_id]->offset);
1215                 sprintf(length, "%x", parts[part_id]->size);
1216
1217                 /* Erase */
1218                 nand_cmd(0, offset, length, NULL);
1219                 /* Write */
1220                 sprintf(length, "%x", (unsigned int) len);
1221                 ret = nand_cmd(1, ramaddr, offset, length);
1222
1223                 erase_qboot_area();
1224                 break;
1225
1226         /* File Systems */
1227         case IMG_FILESYSTEM:
1228                 ret = write_file_system(ramaddr, len, offset, length,
1229                                 part_id, ubi_update);
1230
1231                 erase_qboot_area();
1232                 break;
1233
1234         case IMG_MODEM:
1235                 sprintf(offset, "%x", parts[part_id]->offset);
1236                 sprintf(length, "%x", parts[part_id]->size);
1237
1238                 /* Erase */
1239                 if (!arg)
1240                         nand_cmd(0, offset, length, NULL);
1241                 else
1242                         printf("CSA Clear will be skipped temporary\n");
1243
1244                 /* Check ubi image, 0x23494255 is UBI# */
1245                 {
1246                         long *img_header = (long *)down_ram_addr;
1247
1248                         if (*img_header == 0x23494255)
1249                                 goto ubi_img;
1250                 }
1251
1252 #ifdef CONFIG_UBIFS_MK
1253                 void *dest_addr = (void *) down_ram_addr + 0xc00000;
1254                 void *src_addr = (void *) down_ram_addr;
1255                 int leb_size, max_leb_cnt, mkfs_min_io_size;
1256                 unsigned long ubifs_dest_size, ubi_dest_size;
1257 #ifdef CONFIG_S5PC110
1258                 mkfs_min_io_size = 4096;
1259                 leb_size = 248 * 1024;
1260                 max_leb_cnt = 4096;
1261 #elif CONFIG_S5PC210
1262                 mkfs_min_io_size = 2048;
1263                 leb_size = 126 * 1024;
1264                 max_leb_cnt = 4096;
1265 #endif
1266                 printf("Start making ubifs\n");
1267                 ret = mkfs(src_addr, len, dest_addr, &ubifs_dest_size,
1268                            mkfs_min_io_size, leb_size, max_leb_cnt);
1269                 if (ret) {
1270                         printf("Error : making ubifs failed\n");
1271                         goto out;
1272                 }
1273                 printf("Complete making ubifs\n");
1274 #endif
1275
1276 #ifdef CONFIG_UBINIZE
1277                 int peb_size, ubi_min_io_size, subpage_size, vid_hdr_offs;
1278 #ifdef CONFIG_S5PC110
1279                 ubi_min_io_size = 4096;
1280                 peb_size = 256 * 1024;
1281                 subpage_size = 4096;
1282                 vid_hdr_offs = 0;
1283 #elif CONFIG_S5PC210
1284                 ubi_min_io_size = 2048;
1285                 peb_size = 128 * 1024;
1286                 subpage_size = 512;
1287                 vid_hdr_offs = 512;
1288 #endif
1289                 printf("Start ubinizing\n");
1290                 ret = ubinize(dest_addr, ubifs_dest_size,
1291                               src_addr, &ubi_dest_size,
1292                               peb_size, ubi_min_io_size,
1293                               subpage_size, vid_hdr_offs);
1294                 if (ret) {
1295                         printf("Error : ubinizing failed\n");
1296                         goto out;
1297                 }
1298                 printf("Complete ubinizing\n");
1299
1300                 len = (unsigned int) ubi_dest_size;
1301 #endif
1302
1303 ubi_img:
1304                 /* Write : arg (0 Modem) / (1 CSA) */
1305                 if (!arg) {
1306                         sprintf(length, "%x", (unsigned int) len);
1307                         ret = nand_cmd(1, ramaddr, offset, length);
1308                 }
1309 out:
1310                 break;
1311
1312 #ifdef CONFIG_CMD_MMC
1313         case IMG_MMC:
1314
1315                 if (mmc_part_write)
1316                         ret = write_file_mmc_part(usbd, len);
1317                 else
1318                         ret = write_file_mmc(usbd, len);
1319
1320                 erase_qboot_area();
1321                 break;
1322 #endif
1323         case IMG_V2:
1324                 ret = write_mmc_image(usbd, len, part_id);
1325                 break;
1326
1327         case IMG_MBR:
1328 #ifdef CONFIG_CMD_MBR
1329                 set_mbr_info(usbd, (char *)down_ram_addr, len);
1330 #endif
1331                 break;
1332
1333         case IMG_BOOTLOADER:
1334 #ifdef CONFIG_BOOTLADER_SECTOR
1335                 ret = mmc_cmd(OPS_WRITE, usbd->mmc_dev,
1336                                 CONFIG_BOOTLOADER_SECTOR,
1337                                 len / usbd->mmc_blk + 1,
1338                                 (void *)down_ram_addr);
1339 #endif
1340                 break;
1341
1342         case IMG_KERNEL_V2:
1343                 ret = write_fat_file(usbd, "uImage", part_id, len);
1344                 break;
1345
1346         case IMG_MODEM_V2:
1347                 ret = write_fat_file(usbd, "modem.bin", part_id, len);
1348                 break;
1349
1350         default:
1351                 /* Retry? */
1352                 write_part--;
1353         }
1354
1355         if (ret) {
1356                 /* Retry this commad */
1357                 *((ulong *) usbd->tx_data) = STATUS_RETRY;
1358                 usbd->send_data(usbd->tx_data, usbd->tx_len);
1359                 return 1;
1360         } else
1361                 *((ulong *) usbd->tx_data) = STATUS_DONE;
1362
1363         /* Write image success -> Report status */
1364         usbd->send_data(usbd->tx_data, usbd->tx_len);
1365
1366         write_part++;
1367
1368         /* Reset write count for another image */
1369         if (flag) {
1370                 write_part = 0;
1371                 fs_offset = 0;
1372 #ifdef CONFIG_USE_YAFFS
1373                 yaffs_len = 0;
1374 #endif
1375         }
1376
1377         return 1;
1378 }
1379
1380 static const char *recv_key = "SAMSUNG";
1381 static const char *tx_key = "MPL";
1382
1383 int do_usbd_down(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1384 {
1385         struct usbd_ops *usbd;
1386         int err;
1387
1388         if (argc > 1)
1389                 down_mode = simple_strtoul(argv[1], NULL, 10);
1390         else
1391                 down_mode = MODE_NORMAL;
1392
1393         printf("USB Downloader v%s\n", APP_VERSION);
1394
1395         /* get partition info */
1396         err = get_part_info();
1397         if (err)
1398                 return err;
1399
1400         /* interface setting */
1401         usbd = usbd_set_interface(&usbd_ops);
1402         down_ram_addr = usbd->ram_addr;
1403
1404 #ifdef CONFIG_CMD_MBR
1405         /* get mbr info */
1406         mbr_parts = get_mbr_table(mbr_offset);
1407         if (!mbr_parts) {
1408                 char *mbrparts;
1409
1410                 puts("using default MBR\n");
1411
1412                 mbrparts = getenv("mbrparts");
1413                 set_mbr_info(usbd, mbrparts, strlen(mbrparts));
1414         }
1415 #endif
1416
1417         /* init the usb controller */
1418         if (!usbd->usb_init()) {
1419                 usbd->down_cancel();
1420                 return 0;
1421         }
1422         mmc = find_mmc_device(usbd->mmc_dev);
1423         mmc_init(mmc);
1424
1425         /* receive setting */
1426         usbd->recv_setup(usbd->rx_data, usbd->rx_len);
1427
1428         /* detect the download request from Host PC */
1429         if (usbd->recv_data()) {
1430                 if (strncmp(usbd->rx_data, recv_key, strlen(recv_key)) == 0) {
1431                         printf("Download request from the Host PC\n");
1432                         msleep(30);
1433
1434                         strcpy(usbd->tx_data, tx_key);
1435                         usbd->send_data(usbd->tx_data, usbd->tx_len);
1436                 } else {
1437                         printf("No download request from the Host PC!! 1\n");
1438                         return 0;
1439                 }
1440         } else {
1441                 usbd->down_cancel();
1442                 return 0;
1443         }
1444
1445         usbd->down_start();
1446         printf("Receive the packet\n");
1447
1448         /* receive the data from Host PC */
1449         while (1) {
1450                 usbd->recv_setup(usbd->rx_data, usbd->rx_len);
1451
1452                 if (usbd->recv_data()) {
1453                         if (process_data(usbd) == 0)
1454                                 return 0;
1455                 }
1456         }
1457
1458         return 0;
1459 }
1460
1461 U_BOOT_CMD(usbdown, CONFIG_SYS_MAXARGS, 1, do_usbd_down,
1462         "Initialize USB device and Run USB Downloader (specific)",
1463         "- normal mode\n"
1464         "usbdown mode - specific mode (0: NORAML, 1: FORCE)"
1465 );