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 #define NAND_PAGE_SIZE 2048
  44
  45 static unsigned long down_ram_addr;
  46
  47 static int down_mode;
  48
  49 /* cpu/${CPU} dependent */
  50 extern void do_reset(void);
  51
  52 /* common commands */
  53 extern int do_bootm(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
  54 extern int do_run(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]);
  55
  56 int mtdparts_init(void);
  57 int find_dev_and_part(const char*, struct mtd_device**, u8*, struct part_info**);
  58
  59 /* common/cmd_jffs2.c */
  60 extern struct list_head devices;
  61
  62 static u8 count_mtdparts(void)
  63 {
  64         struct list_head *dentry, *pentry;
  65         struct mtd_device *dev;
  66         u8 part_num = 0;
  67
  68         list_for_each(dentry, &devices) {
  69                 dev = list_entry(dentry, struct mtd_device, link);
  70
  71                 /* list partitions for given device */
  72                 list_for_each(pentry, &dev->parts)
  73                         part_num++;
  74         }
  75
  76         return part_num;
  77 }
  78
  79 #ifdef CONFIG_CMD_UBI
  80 static int check_ubi_mode(void)
  81 {
  82         char *env_ubifs;
  83         int ubi_mode;
  84
  85         env_ubifs = getenv("ubi");
  86         ubi_mode = !strcmp(env_ubifs, "enabled");
  87
  88         return ubi_mode;
  89 }
  90 #else
  91 #define check_ubi_mode()                0
  92 #endif
  93
  94 #ifdef CONFIG_MTD_PARTITIONS
  95 static int get_part_info(void)
  96 {
  97         struct mtd_device *dev;
  98         u8 out_partnum;
  99         char part_name[12];
 100         char nand_name[12];
 101         int i;
 102         int part_num;
 103         int ubi_mode = 0;
 104
 105 #if defined(CONFIG_CMD_NAND)
 106         sprintf(nand_name, "nand0");
 107 #elif defined(CONFIG_CMD_ONENAND)
 108         sprintf(nand_name, "onenand0");
 109 #else
 110         printf("Configure your NAND sub-system\n");
 111         return 0;
 112 #endif
 113
 114         if (mtdparts_init())
 115                 return 0;
 116
 117         ubi_mode = check_ubi_mode();
 118
 119         part_num = count_mtdparts();
 120         for (i = 0; i < part_num; i++) {
 121                 sprintf(part_name, "%s,%d", nand_name, i);
 122
 123                 if (find_dev_and_part(part_name, &dev, &out_partnum, &parts[i]))
 124                         return -EINVAL;
 125         }
 126
 127         return 0;
 128 }
 129
 130 static int get_part_id(char *name)
 131 {
 132         int nparts = count_mtdparts();
 133         int i;
 134
 135         for (i = 0; i < nparts; i++) {
 136                 if (strcmp(parts[i]->name, name) == 0)
 137                         return i;
 138         }
 139
 140         printf("Error: Unknown partition -> %s\n", name);
 141         return -1;
 142 }
 143 #else
 144 static int get_part_info(void)
 145 {
 146         printf("Error: Can't get patition information\n");
 147         return -EINVAL;
 148 }
 149
 150 static int get_part_id(char *name)
 151 {
 152         return 0;
 153 }
 154 #endif
 155
 156 static void boot_cmd(char *addr)
 157 {
 158         char *argv[] = { "bootm", addr };
 159         do_bootm(NULL, 0, 2, argv);
 160 }
 161
 162 #if defined(CONFIG_CMD_NAND)
 163 extern int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
 164 #elif defined(CONFIG_CMD_ONENAND)
 165 extern int do_onenand(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
 166 #endif
 167
 168 /* NAND erase and write using nand command */
 169 static int nand_cmd(int type, char *p1, char *p2, char *p3)
 170 {
 171         int ret = 1;
 172         char nand_name[12];
 173         int (*nand_func) (cmd_tbl_t *, int, int, char **);
 174
 175 #if defined(CONFIG_CMD_NAND)
 176         sprintf(nand_name, "nand");
 177         nand_func = do_nand;
 178 #elif defined(CONFIG_CMD_ONENAND)
 179         sprintf(nand_name, "onenand");
 180         nand_func = do_onenand;
 181 #else
 182         printf("Configure your NAND sub-system\n");
 183         return 0;
 184 #endif
 185
 186         if (type == 0) {
 187                 char *argv[] = {nand_name, "erase", p1, p2};
 188                 printf("%s %s %s %s\n", argv[0], argv[1], argv[2], argv[3]);
 189                 ret = nand_func(NULL, 0, 4, argv);
 190         } else if (type == 1) {
 191                 char *argv[] = {nand_name, "write", p1, p2, p3};
 192                 printf("%s %s %s %s %s\n", argv[0], argv[1], argv[2],
 193                                 argv[3], argv[4]);
 194                 ret = nand_func(NULL, 0, 5, argv);
 195         } else if (type == 2) {
 196                 char *argv[] = {nand_name, "write.yaffs", p1, p2, p3};
 197                 printf("%s %s %s %s %s\n", argv[0], argv[1], argv[2],
 198                                 argv[3], argv[4]);
 199                 ret = nand_func(NULL, 0, 5, argv);
 200         } else if (type == 3) {
 201                 char *argv[] = {nand_name, "lock", p1, p2};
 202                 printf("%s %s %s %s\n", argv[0], argv[1], argv[2], argv[3]);
 203                 ret = nand_func(NULL, 0, 4, argv);
 204         }
 205
 206         if (ret)
 207                 printf("Error: NAND Command\n");
 208
 209         return ret;
 210 }
 211
 212 #ifdef CONFIG_CMD_UBI
 213 int do_ubi(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
 214
 215 int ubi_cmd(int part, char *p1, char *p2, char *p3)
 216 {
 217         int ret = 1;
 218
 219         if (part == RAMDISK_PART_ID) {
 220                 char *argv[] = {"ubi", "write", p1, "rootfs.cramfs", p2, p3};
 221                 printf("%s %s %s %s %s %s\n", argv[0], argv[1], argv[2],
 222                                 argv[3], argv[4], argv[5]);
 223                 ret = do_ubi(NULL, 0, 6, argv);
 224         } else if (part == FILESYSTEM_PART_ID) {
 225                 char *argv[] = {"ubi", "write", p1, "factoryfs.cramfs", p2, p3};
 226                 printf("%s %s %s %s %s %s\n", argv[0], argv[1], argv[2],
 227                                 argv[3], argv[4], argv[5]);
 228                 ret = do_ubi(NULL, 0, 6, argv);
 229         } else if (part == FILESYSTEM2_PART_ID) {
 230                 char *argv[] = {"ubi", "write", p1, "datafs.ubifs", p2, p3};
 231                 printf("%s %s %s %s %s %s\n", argv[0], argv[1], argv[2],
 232                                 argv[3], argv[4], argv[5]);
 233                 ret = do_ubi(NULL, 0, 6, argv);
 234         }
 235
 236         return ret;
 237 }
 238 #endif
 239
 240 #ifdef CONFIG_CMD_MMC
 241 #include <mmc.h>
 242 #include <fat.h>
 243
 244 static struct mmc *mmc;
 245
 246 static int mmc_cmd(int ops, int dev_num, ulong start, lbaint_t cnt, void *addr)
 247 {
 248         int ret;
 249
 250         if (ops) {
 251                 printf("mmc write 0x%x 0x%x\n", start, cnt);
 252                 ret = mmc->block_dev.block_write(dev_num, start, cnt, addr);
 253         } else {
 254                 printf("mmc read 0x%x 0x%x\n", start, cnt);
 255                 ret = mmc->block_dev.block_read(dev_num, start, cnt, addr);
 256         }
 257
 258         if (ret > 0)
 259                 ret = 0;
 260         else
 261                 ret = 1;
 262
 263         return ret;
 264 }
 265
 266 #define NORMAL_PARTITION        0
 267 #define EXTEND_PARTITION        1
 268
 269 #define EXTEND_PART_TYPE        5
 270
 271 #define EXTEND_MAX_PART         32
 272
 273 static unsigned int cur_blk_offset;
 274 static unsigned int cur_part_size;
 275 static unsigned int cur_part;
 276
 277 static unsigned int mmc_parts;
 278 static unsigned int mmc_part_write;
 279
 280 static u8 part_mode = 0;
 281
 282 struct partition_info {
 283         u32 size;
 284         u32 checksum;
 285         u32 res;
 286 } __attribute__((packed));
 287
 288 struct partition_header {
 289         u8                      fat32head[16];  /* RFSHEAD identifier */
 290         struct partition_info   partition[EXTEND_MAX_PART];
 291         u8                      res[112];       /* only data (without MBR) */
 292 } __attribute__((packed));
 293
 294 struct mul_partition_info {
 295         u32 lba_begin;          /* absolute address from 0 block */
 296         u32 num_sectors;
 297 } __attribute__((packed));
 298
 299 #define MBR_OFFSET      0x10
 300
 301 struct partition_header part_info;
 302 struct mbr mbr_info;
 303 struct mul_partition_info mul_info[EXTEND_MAX_PART];
 304
 305 static int write_mmc_partition(struct usbd_ops *usbd, u32 *ram_addr, u32 len)
 306 {
 307         unsigned int blocks;
 308         int i;
 309         int loop;
 310         u32 cnt;
 311         int ret;
 312
 313         if (cur_part_size > len) {
 314                 blocks = len / usbd->mmc_blk;
 315                 ret = -1;
 316         } else {
 317                 blocks = cur_part_size / usbd->mmc_blk;
 318                 ret = len - cur_part_size;
 319         }
 320
 321         if (len % usbd->mmc_blk)
 322                 blocks++;
 323
 324         loop = blocks / usbd->mmc_max;
 325         if (blocks % usbd->mmc_max)
 326                 loop++;
 327
 328         for (i = 0; i < loop; i++) {
 329                 if (i == 0) {
 330                         cnt = blocks % usbd->mmc_max;
 331                         if (cnt == 0)
 332                                 cnt = usbd->mmc_max;
 333                 } else {
 334                         cnt = usbd->mmc_max;
 335                 }
 336
 337                 mmc_cmd(OPS_WRITE, usbd->mmc_dev, cur_blk_offset,
 338                                 cnt, (void *)*ram_addr);
 339
 340                 cur_blk_offset += cnt;
 341
 342                 *ram_addr += (cnt * usbd->mmc_blk);
 343         }
 344
 345         return ret;
 346 }
 347
 348 static int write_file_mmc(struct usbd_ops *usbd, u32 len)
 349 {
 350         u32 ram_addr;
 351         int i;
 352         int ret;
 353         struct mbr *mbr;
 354
 355         if (!usbd->mmc_total) {
 356                 printf("MMC is not supported!\n");
 357                 return 0;
 358         }
 359
 360         ram_addr = (u32)down_ram_addr;
 361
 362         if (cur_blk_offset == 0) {
 363                 boot_sector *bs;
 364                 u32 mbr_blk_size;
 365
 366                 memcpy(&part_info, (void *)ram_addr,
 367                                 sizeof(struct partition_header));
 368
 369                 ram_addr += sizeof(struct partition_header);
 370                 len -= sizeof(struct partition_header);
 371                 mbr = (struct mbr *)ram_addr;
 372                 mbr_blk_size = mbr->parts[0].lba;
 373
 374                 if (mbr->parts[0].partition_type != EXTEND_PART_TYPE) {
 375                         part_mode = NORMAL_PARTITION;
 376
 377                         /* modify sectors of p1 */
 378                         mbr->parts[0].nsectors = usbd->mmc_total -
 379                                         (mbr_blk_size +
 380                                         mbr->parts[1].nsectors +
 381                                         mbr->parts[2].nsectors +
 382                                         mbr->parts[3].nsectors);
 383
 384                         mmc_parts++;
 385
 386                         /* modify lba_begin of p2 and p3 and p4 */
 387                         for (i = 1; i < 4; i++) {
 388                                 if (part_info.partition[i].size == 0)
 389                                         break;
 390
 391                                 mmc_parts++;
 392                                 mbr->parts[i].lba =
 393                                         mbr->parts[i - 1].lba +
 394                                         mbr->parts[i - 1].nsectors;
 395                         }
 396
 397                         /* copy MBR */
 398                         memcpy(&mbr_info, mbr, sizeof(struct mbr));
 399
 400                         printf("Total Size: 0x%08x #parts %d\n",
 401                                         (unsigned int)usbd->mmc_total,
 402                                         mmc_parts);
 403                         for (i = 0; i < mmc_parts; i++) {
 404                                 printf("p%d\t0x%08x\t0x%08x\n", i + 1,
 405                                         mbr_info.parts[i].lba,
 406                                         mbr_info.parts[i].nsectors);
 407                         }
 408
 409                         /* write MBR */
 410                         mmc_cmd(OPS_WRITE, usbd->mmc_dev, 0,
 411                                         mbr_blk_size, (void *)ram_addr);
 412
 413                         ram_addr += mbr_blk_size * usbd->mmc_blk;
 414                         len -= mbr_blk_size * usbd->mmc_blk;
 415
 416                         cur_blk_offset = mbr_blk_size;
 417                         cur_part = 0;
 418                         cur_part_size = part_info.partition[0].size;
 419
 420                         /* modify p1's total sector */
 421                         bs = (boot_sector *)ram_addr;
 422                         bs->total_sect = mbr_info.parts[0].nsectors;
 423
 424                         printf("\nWrite Partition %d.. %d blocks\n",
 425                                 cur_part + 1,
 426                                 part_info.partition[cur_part].size /
 427                                 (int)usbd->mmc_blk);
 428                 } else {
 429                         part_mode = EXTEND_PARTITION;
 430
 431                         for (i = 0; i < EXTEND_MAX_PART; i++) {
 432                                 if (part_info.partition[i].size == 0)
 433                                         break;
 434                                 mmc_parts++;
 435                         }
 436
 437                         if (mmc_parts == 0)
 438                                 return -1;
 439                         else
 440                                 printf("found %d partitions\n", mmc_parts);
 441
 442                         /* build partition table */
 443
 444                         mul_info[0].num_sectors =
 445                                 usbd->mmc_total - mbr_blk_size;
 446                         for (i = 1; i < mmc_parts; i++) {
 447                                 mul_info[i].num_sectors =
 448                                         part_info.partition[i].res +
 449                                         mbr_blk_size; /* add MBR */
 450                         }
 451
 452                         for (i = 1; i < mmc_parts; i++) {
 453                                 mul_info[0].num_sectors -=
 454                                         mul_info[i].num_sectors;
 455                         }
 456
 457                         mul_info[0].lba_begin = mbr_blk_size;
 458                         for (i = 1; i < mmc_parts; i++) {
 459                                 mul_info[i].lba_begin =
 460                                         mul_info[i-1].lba_begin +
 461                                         mul_info[i-1].num_sectors;
 462                         }
 463
 464                         /* modify MBR of extended partition: p1 */
 465                         mbr->parts[0].nsectors =
 466                                 usbd->mmc_total - mbr_blk_size;
 467
 468                         /* modify MBR of first logical partition: p5 */
 469                         mbr = (struct mbr *)
 470                                 (ram_addr + mbr_blk_size * usbd->mmc_blk);
 471
 472                         mbr->parts[0].nsectors =
 473                                 mul_info[0].num_sectors - mbr_blk_size;
 474                         mbr->parts[1].lba=
 475                                 mul_info[1].lba_begin - mbr_blk_size;
 476
 477                         /* modify BPB data of p5 */
 478                         bs = (boot_sector *)
 479                                 ((u32)mbr + mbr_blk_size * usbd->mmc_blk);
 480                         memset(&bs->sectors, 0, 2);
 481                         bs->total_sect = mbr->parts[0].nsectors;
 482
 483                         printf("Total Size: 0x%08x #parts %d\n",
 484                                         (unsigned int)usbd->mmc_total,
 485                                         mmc_parts);
 486                         for (i = 0; i < mmc_parts; i++) {
 487                                 printf("p%d\t0x%08x\t0x%08x\n", i + 1,
 488                                         mul_info[i].lba_begin,
 489                                         mul_info[i].num_sectors);
 490                         }
 491
 492                         cur_blk_offset = 0;
 493                         cur_part = 0;
 494                         cur_part_size = part_info.partition[0].size;
 495
 496                         printf("\nWrite Partition %d.. %d blocks\n",
 497                                 cur_part + 1,
 498                                 part_info.partition[cur_part].size /
 499                                 (int)usbd->mmc_blk);
 500                 }
 501         }
 502
 503         for (i = cur_part; i < mmc_parts; i++) {
 504                 ret = write_mmc_partition(usbd, &ram_addr, len);
 505
 506                 if (ret < 0) {
 507                         cur_part_size -= len;
 508                         break;
 509                 } else {
 510                         cur_part++;
 511                         cur_part_size =
 512                                 part_info.partition[cur_part].size;
 513
 514                         if (part_mode == NORMAL_PARTITION) {
 515                                 cur_blk_offset =
 516                                         mbr_info.parts[cur_part].lba;
 517                         } else {
 518                                 cur_blk_offset =
 519                                         mul_info[cur_part].lba_begin;
 520                                 /* modify MBR */
 521                                 if (cur_part < mmc_parts) {
 522                                         mbr = (struct mbr *)ram_addr;
 523                                         mbr->parts[1].lba=
 524                                                 mul_info[cur_part+1].lba_begin -
 525                                                 mbr->parts[0].lba;
 526                                 }
 527                         }
 528
 529                         if (ret == 0)
 530                                 break;
 531                         else
 532                                 len = ret;
 533
 534                         printf("\nWrite Partition %d.. %d blocks\n",
 535                                 cur_part + 1,
 536                                 part_info.partition[cur_part].size /
 537                                 (int)usbd->mmc_blk);
 538                 }
 539         }
 540
 541         return 0;
 542 }
 543
 544 static int write_file_mmc_part(struct usbd_ops *usbd, u32 len)
 545 {
 546         u32 ram_addr;
 547         u32 ofs;
 548         int i;
 549         struct mbr *mbr;
 550         u32 mbr_blk_size;
 551
 552         ram_addr = (u32)down_ram_addr;
 553         mbr = &mbr_info;
 554
 555         if (cur_blk_offset == 0) {
 556                 /* read MBR */
 557                 mmc_cmd(OPS_READ, usbd->mmc_dev, 0,
 558                         sizeof(struct mbr)/usbd->mmc_blk, (void *)mbr);
 559
 560                 mbr_blk_size = mbr->parts[0].lba;
 561
 562                 if (mbr->parts[0].partition_type != EXTEND_PART_TYPE) {
 563                         part_mode = NORMAL_PARTITION;
 564
 565                         for (i = 0; i < 4; i++) {
 566                                 printf("p%d\t0x%08x\t0x%08x\n", i + 1,
 567                                         mbr_info.parts[i].lba,
 568                                         mbr_info.parts[i].nsectors);
 569                         }
 570
 571                         cur_blk_offset =
 572                                 mbr->parts[mmc_part_write - 1].lba;
 573                         cur_part = mmc_part_write - 1;
 574                         cur_part_size =
 575                                 usbd->mmc_blk *
 576                                 mbr->parts[mmc_part_write - 1].nsectors;
 577
 578                         if (mmc_part_write == 1) {
 579                                 ram_addr += sizeof(struct mbr);
 580                                 cur_blk_offset += sizeof(struct mbr) /
 581                                         usbd->mmc_blk;
 582                                 len -= sizeof(struct mbr);
 583                         }
 584                 } else {
 585                         part_mode = EXTEND_PARTITION;
 586
 587                         for (i = 1; i < mmc_part_write; i++) {
 588                                 ofs = mbr->parts[0].lba + mbr->parts[1].lba;
 589                                 printf("P%d start blk: 0x%x, size: 0x%x\n", i,
 590                                         ofs, mbr->parts[1].nsectors);
 591                                 mmc_cmd(OPS_READ, usbd->mmc_dev, ofs,
 592                                         (sizeof(struct mbr) / usbd->mmc_blk),
 593                                         (void *)mbr);
 594                         }
 595
 596                         ofs = mbr->parts[0].lba + mbr->parts[1].lba;
 597                         printf("P%d start blk: 0x%x, size: 0x%x\n", i,
 598                                 ofs, mbr->parts[1].nsectors);
 599
 600                         ofs += mbr_blk_size; /* skip MBR */
 601                         cur_blk_offset = ofs;
 602                         cur_part = mmc_part_write - 1;
 603                         cur_part_size =
 604                                 usbd->mmc_blk *
 605                                 mbr->parts[1].nsectors;
 606
 607                         if (mmc_part_write == 1) {
 608                                 boot_sector *bs;
 609                                 u32 total_sect;
 610                                 /* modify BPB data of p1 */
 611                                 mmc_cmd(OPS_READ, usbd->mmc_dev, cur_blk_offset,
 612                                         (sizeof(struct mbr) / usbd->mmc_blk),
 613                                         mbr);
 614
 615                                 bs = (boot_sector *)mbr;
 616                                 total_sect = bs->total_sect;
 617
 618                                 bs = (boot_sector *)ram_addr;
 619                                 memset(&bs->sectors, 0, 2);
 620                                 bs->total_sect = total_sect;
 621                         }
 622                 }
 623         }
 624
 625         printf("\nWrite Partition %d.. %d blocks\n",
 626                 cur_part + 1,
 627                 len / (int)usbd->mmc_blk);
 628
 629         write_mmc_partition(usbd, &ram_addr, len);
 630
 631         return 0;
 632 }
 633 #endif
 634
 635 static unsigned int mbr_offset[16];
 636 static int mbr_parts = 0;
 637
 638 static unsigned long memsize_parse (const char *const ptr, const char **retptr)
 639 {
 640         unsigned long ret = simple_strtoul(ptr, (char **)retptr, 0);
 641
 642         switch (**retptr) {
 643                 case 'G':
 644                 case 'g':
 645                         ret <<= 10;
 646                 case 'M':
 647                 case 'm':
 648                         ret <<= 10;
 649                 case 'K':
 650                 case 'k':
 651                         ret <<= 10;
 652                         (*retptr)++;
 653                 default:
 654                         break;
 655         }
 656
 657         return ret;
 658 }
 659
 660 static void set_mbr_info(struct usbd_ops *usbd, char *ramaddr, u32 len)
 661 {
 662         char mbr_str[256];
 663         char save[16][16];
 664         char *p;
 665         char *tok;
 666         unsigned int size[16];
 667         int i = 0;
 668
 669         strncpy(mbr_str, ramaddr, len);
 670         p = mbr_str;
 671
 672         for (i = 0; ; i++, p = NULL) {
 673                 tok = strtok(p, ",");
 674                 if (tok == NULL)
 675                         break;
 676                 strcpy(save[i], tok);
 677                 printf("part%d: %s\n", i, save[i]);
 678         }
 679
 680         mbr_parts = i;
 681         printf("find %d partitions\n", mbr_parts);
 682
 683         for (i = 0; i < mbr_parts; i++) {
 684                 p = save[i];
 685                 size[i] = memsize_parse(p, (const char **)&p) / 512;
 686         }
 687
 688         puts("save the MBR Table...\n");
 689         set_mbr_table(0x800, mbr_parts, size, mbr_offset);
 690 }
 691
 692 static int write_mmc_image(struct usbd_ops *usbd, unsigned int len, int part_num)
 693 {
 694         int ret = 0;
 695
 696         if (mbr_parts <= part_num) {
 697                 printf("Error: MBR table have %d partitions (request %d)\n",
 698                                 mbr_parts, part_num);
 699                 return 1;
 700         }
 701
 702 #if 0
 703         /* modify size of UMS partition */
 704         if (part_num == 4 && fs_offset == 0) {
 705                 boot_sector *bs;
 706                 bs = (boot_sector *)down_ram_addr;
 707                 memset(&bs->sectors, 0, 2);
 708                 bs->total_sect = usbd->mmc_total - mbr_offset[part_num];
 709         }
 710 #endif
 711         ret = mmc_cmd(OPS_WRITE, usbd->mmc_dev,
 712                         mbr_offset[part_num] + fs_offset,
 713                         len / usbd->mmc_blk,
 714                         (void *)down_ram_addr);
 715
 716         fs_offset += (len / usbd->mmc_blk);
 717
 718         return ret;
 719 }
 720
 721 static int write_fat_file(struct usbd_ops *usbd, char *file_name,
 722                         int part_id, int len)
 723 {
 724 #ifdef CONFIG_FAT_WRITE
 725         int ret;
 726
 727         ret = fat_register_device(&mmc->block_dev, part_id);
 728         if (ret < 0) {
 729                 printf("error : fat_register_divce\n");
 730                 return 0;
 731         }
 732
 733         ret = file_fat_write(file_name, (void *)down_ram_addr, len);
 734         if (ret < 0) {
 735                 printf("error : writing uImage\n");
 736                 return 0;
 737         }
 738 #else
 739         printf("error: doesn't support fat_write\n");
 740 #endif
 741         return 0;
 742 }
 743
 744
 745 static int ubi_update = 0;
 746
 747 static int write_file_system(char *ramaddr, ulong len, char *offset,
 748                 char *length, int part_num)
 749 {
 750         int ret = 0;
 751
 752 #ifdef CONFIG_CMD_UBI
 753         /* UBI Update */
 754         if (ubi_update) {
 755                 sprintf(length, "0x%x", (uint)len);
 756                 ret = ubi_cmd(part_id, ramaddr, length, "cont");
 757                 return ret;
 758         }
 759 #endif
 760
 761         /* Erase entire partition at the first writing */
 762         if (write_part == 0 && ubi_update == 0) {
 763                 sprintf(offset, "0x%x", (uint)parts[part_num]->offset);
 764                 sprintf(length, "0x%x", (uint)parts[part_num]->size);
 765                 nand_cmd(0, offset, length, NULL);
 766         }
 767
 768         sprintf(offset, "0x%x", (uint)(parts[part_num]->offset + fs_offset));
 769         sprintf(length, "0x%x", (uint)len);
 770
 771         fs_offset += len;
 772         ret = nand_cmd(1, ramaddr, offset, length);
 773
 774         return ret;
 775 }
 776
 777 static int qboot_erase = 0;
 778
 779 /* Erase the qboot */
 780 static void erase_qboot_area(void)
 781 {
 782         char offset[12], length[12];
 783         int qboot_id;
 784
 785         if (qboot_erase)
 786                 return;
 787
 788         qboot_id = get_part_id("qboot");
 789
 790         if (qboot_id != -1) {
 791                 printf("\nCOMMAND_ERASE_QBOOT\n");
 792                 sprintf(offset, "%x", parts[qboot_id]->offset);
 793                 sprintf(length, "%x", parts[qboot_id]->size);
 794                 nand_cmd(0, offset, length, NULL);
 795                 qboot_erase = 1;
 796         }
 797 }
 798
 799 /* Erase the environment */
 800 static void erase_env_area(struct usbd_ops *usbd)
 801 {
 802 #if defined(CONFIG_ENV_IS_IN_NAND) || defined(CONFIG_ENV_IS_IN_ONENAND)
 803         int param_id;
 804         char offset[12], length[12];
 805
 806         param_id = get_part_id("params");
 807
 808         if (param_id == -1) {
 809                 sprintf(offset, "%x", CONFIG_ENV_ADDR);
 810                 sprintf(length, "%x", CONFIG_ENV_SIZE);
 811         } else {
 812                 sprintf(offset, "%x", parts[param_id]->offset);
 813                 sprintf(length, "%x", parts[param_id]->size);
 814         }
 815         nand_cmd(0, offset, length, NULL);
 816 #elif defined(CONFIG_ENV_IS_IN_MMC)
 817         char buf[usbd->mmc_blk];
 818
 819         memset(buf, 0x0, usbd->mmc_blk);
 820         mmc_cmd(OPS_WRITE, CONFIG_SYS_MMC_ENV_DEV,
 821                         CONFIG_ENV_OFFSET / usbd->mmc_blk,
 822                         1, (void *)buf);
 823 #endif
 824 }
 825
 826 static inline void send_ack(struct usbd_ops *usbd, int data)
 827 {
 828         *((ulong *) usbd->tx_data) = data;
 829         usbd->send_data(usbd->tx_data, usbd->tx_len);
 830 }
 831
 832 static inline int check_mmc_device(struct usbd_ops *usbd)
 833 {
 834         if (usbd->mmc_total)
 835                 return 0;
 836
 837         printf("\nError: Couldn't find the MMC device\n");
 838         return 1;
 839 }
 840
 841 static int write_mtd_image(struct usbd_ops *usbd, int img_type,
 842                 unsigned int len, unsigned int arg)
 843 {
 844         unsigned int ofs = 0;
 845         char offset[12], length[12], ramaddr[12];
 846         int ret;
 847
 848         sprintf(ramaddr, "0x%x", (uint) down_ram_addr);
 849
 850         /* Erase and Write to NAND */
 851         switch (img_type) {
 852         case IMG_BOOT:
 853                 ofs = parts[part_id]->offset;
 854 #ifdef CONFIG_S5PC1XX
 855                 /* Workaround: for prevent revision mismatch */
 856                 if (cpu_is_s5pc110() && (down_mode != MODE_FORCE)) {
 857                         int img_rev = 1;
 858                         long *img_header = (long *)down_ram_addr;
 859
 860                         if (*img_header == 0xea000012)
 861                                 img_rev = 0;
 862                         else if (*(img_header + 0x400) == 0xea000012)
 863                                 img_rev = 2;
 864
 865                         if (img_rev != s5p_get_cpu_rev()) {
 866                                 printf("CPU revision mismatch!\n"
 867                                         "bootloader is %s%s\n"
 868                                         "download image is %s%s\n",
 869                                         s5p_get_cpu_rev() ? "EVT1" : "EVT0",
 870                                         s5p_get_cpu_rev() == 2 ? "-Fused" : "",
 871                                         img_rev ? "EVT1" : "EVT0",
 872                                         img_rev == 2 ? "-Fused" : "");
 873                                 return -1;
 874                         }
 875                 }
 876 #endif
 877 #ifdef CONFIG_SBOOT
 878                 /* Only u-boot.bin is allowed */
 879                 {
 880                         long *img_header = (long *)down_ram_addr;
 881
 882                         if (*img_header != 0xea000018) {
 883                                 printf("\n!!! ERROR !!!\n"
 884                                         "Please download the u-boot.bin.\n"
 885                                         "Other images are not allowed.\n\n");
 886                                 return -1;
 887                         }
 888                 }
 889 #endif
 890
 891                 erase_env_area(usbd);
 892
 893                 sprintf(offset, "%x", (uint)ofs);
 894                 if (ofs != 0)
 895                         sprintf(length, "%x", parts[part_id]->size - (uint)ofs);
 896                 else
 897                         sprintf(length, "%x", parts[part_id]->size);
 898
 899                 /* Erase */
 900                 nand_cmd(0, offset, length, NULL);
 901                 /* Write */
 902                 sprintf(length, "%x", (unsigned int) len);
 903                 ret = nand_cmd(1, ramaddr, offset, length);
 904                 break;
 905
 906         case IMG_KERNEL:
 907                 sprintf(offset, "%x", parts[part_id]->offset);
 908                 sprintf(length, "%x", parts[part_id]->size);
 909
 910                 /* Erase */
 911                 nand_cmd(0, offset, length, NULL);
 912                 /* Write */
 913                 sprintf(length, "%x", (unsigned int) len);
 914                 ret = nand_cmd(1, ramaddr, offset, length);
 915
 916                 erase_qboot_area();
 917                 break;
 918
 919         /* File Systems */
 920         case IMG_FILESYSTEM:
 921                 ret = write_file_system(ramaddr, len, offset, length, part_id);
 922
 923                 erase_qboot_area();
 924                 break;
 925
 926         case IMG_MODEM:
 927                 sprintf(offset, "%x", parts[part_id]->offset);
 928                 sprintf(length, "%x", parts[part_id]->size);
 929
 930                 /* Erase */
 931                 if (!arg)
 932                         nand_cmd(0, offset, length, NULL);
 933                 else
 934                         printf("CSA Clear will be skipped temporary\n");
 935
 936                 /* Check ubi image, 0x23494255 is UBI# */
 937                 {
 938                         long *img_header = (long *)down_ram_addr;
 939
 940                         if (*img_header == 0x23494255)
 941                                 goto ubi_img;
 942                 }
 943
 944 #ifdef CONFIG_UBIFS_MK
 945                 void *dest_addr = (void *) down_ram_addr + 0xc00000;
 946                 void *src_addr = (void *) down_ram_addr;
 947                 int leb_size, max_leb_cnt, mkfs_min_io_size;
 948                 unsigned long ubifs_dest_size, ubi_dest_size;
 949 #ifdef CONFIG_S5PC110
 950                 mkfs_min_io_size = 4096;
 951                 leb_size = 248 * 1024;
 952                 max_leb_cnt = 4096;
 953 #elif CONFIG_S5PC210
 954                 mkfs_min_io_size = 2048;
 955                 leb_size = 126 * 1024;
 956                 max_leb_cnt = 4096;
 957 #endif
 958                 printf("Start making ubifs\n");
 959                 ret = mkfs(src_addr, len, dest_addr, &ubifs_dest_size,
 960                            mkfs_min_io_size, leb_size, max_leb_cnt);
 961                 if (ret) {
 962                         printf("Error : making ubifs failed\n");
 963                         goto out;
 964                 }
 965                 printf("Complete making ubifs\n");
 966 #endif
 967
 968 #ifdef CONFIG_UBINIZE
 969                 int peb_size, ubi_min_io_size, subpage_size, vid_hdr_offs;
 970 #ifdef CONFIG_S5PC110
 971                 ubi_min_io_size = 4096;
 972                 peb_size = 256 * 1024;
 973                 subpage_size = 4096;
 974                 vid_hdr_offs = 0;
 975 #elif CONFIG_S5PC210
 976                 ubi_min_io_size = 2048;
 977                 peb_size = 128 * 1024;
 978                 subpage_size = 512;
 979                 vid_hdr_offs = 512;
 980 #endif
 981                 printf("Start ubinizing\n");
 982                 ret = ubinize(dest_addr, ubifs_dest_size,
 983                               src_addr, &ubi_dest_size,
 984                               peb_size, ubi_min_io_size,
 985                               subpage_size, vid_hdr_offs);
 986                 if (ret) {
 987                         printf("Error : ubinizing failed\n");
 988                         goto out;
 989                 }
 990                 printf("Complete ubinizing\n");
 991
 992                 len = (unsigned int) ubi_dest_size;
 993 #endif
 994
 995 ubi_img:
 996                 /* Write : arg (0 Modem) / (1 CSA) */
 997                 if (!arg) {
 998                         sprintf(length, "%x", (unsigned int) len);
 999                         ret = nand_cmd(1, ramaddr, offset, length);
1000                 }
1001 out:
1002                 break;
1003
1004 #ifdef CONFIG_CMD_MMC
1005         case IMG_MMC:
1006                 if (check_mmc_device(usbd))
1007                         return -1;
1008
1009                 if (mmc_part_write)
1010                         ret = write_file_mmc_part(usbd, len);
1011                 else
1012                         ret = write_file_mmc(usbd, len);
1013
1014                 erase_qboot_area();
1015                 break;
1016 #endif
1017         default:
1018                 /* Retry? */
1019                 write_part--;
1020         }
1021
1022         return ret;
1023 }
1024
1025 static int write_v2_image(struct usbd_ops *usbd, int img_type,
1026                 unsigned int len, unsigned int arg)
1027 {
1028         int ret;
1029
1030         if (check_mmc_device(usbd))
1031                 return -1;
1032
1033         switch (img_type) {
1034         case IMG_V2:
1035                 ret = write_mmc_image(usbd, len, part_id);
1036                 break;
1037
1038         case IMG_MBR:
1039 #ifdef CONFIG_CMD_MBR
1040                 set_mbr_info(usbd, (char *)down_ram_addr, len);
1041 #endif
1042                 break;
1043
1044         case IMG_BOOTLOADER:
1045 #ifdef CONFIG_BOOTLOADER_SECTOR
1046                 erase_env_area(usbd);
1047
1048                 ret = mmc_cmd(OPS_WRITE, usbd->mmc_dev,
1049                                 CONFIG_BOOTLOADER_SECTOR,
1050                                 len / usbd->mmc_blk + 1,
1051                                 (void *)down_ram_addr);
1052 #endif
1053                 break;
1054
1055         case IMG_KERNEL_V2:
1056                 ret = write_fat_file(usbd, "uImage", part_id, len);
1057                 break;
1058
1059         case IMG_MODEM_V2:
1060                 ret = write_fat_file(usbd, "modem.bin", part_id, len);
1061                 break;
1062
1063         default:
1064                 /* Retry? */
1065                 write_part--;
1066         }
1067
1068         return ret;
1069 }
1070
1071 /* Parsing received data packet and Process data */
1072 static int process_data(struct usbd_ops *usbd)
1073 {
1074         unsigned int cmd = 0, arg = 0, len = 0, flag = 0;
1075         char ramaddr[12];
1076         int recvlen = 0;
1077         unsigned int blocks = 0;
1078         int ret = 0;
1079         int ubi_mode = 0;
1080         int img_type = -1;
1081
1082         sprintf(ramaddr, "0x%x", (uint) down_ram_addr);
1083
1084         /* Parse command */
1085         cmd  = *((ulong *) usbd->rx_data + 0);
1086         arg  = *((ulong *) usbd->rx_data + 1);
1087         len  = *((ulong *) usbd->rx_data + 2);
1088         flag = *((ulong *) usbd->rx_data + 3);
1089
1090         /* Reset tx buffer */
1091         memset(usbd->tx_data, 0, sizeof(usbd->tx_data));
1092
1093         ubi_mode = check_ubi_mode();
1094
1095         switch (cmd) {
1096         case COMMAND_DOWNLOAD_IMAGE:
1097                 printf("\nCOMMAND_DOWNLOAD_IMAGE\n");
1098
1099                 if (arg)
1100                         down_ram_addr = usbd->ram_addr + 0x1000000;
1101                 else
1102                         down_ram_addr = usbd->ram_addr;
1103
1104                 usbd->recv_setup((char *)down_ram_addr, (int)len);
1105                 printf("Download to 0x%08x, %d bytes\n",
1106                                 (uint)down_ram_addr, (int)len);
1107
1108                 /* response */
1109                 send_ack(usbd, STATUS_DONE);
1110
1111                 /* Receive image by using dma */
1112                 recvlen = usbd->recv_data();
1113                 if (recvlen < 0) {
1114                         send_ack(usbd, STATUS_ERROR);
1115                         return 0;
1116                 } else if (recvlen < len) {
1117                         printf("Error: wrong image size -> %d/%d\n",
1118                                         (int)recvlen, (int)len);
1119
1120                         /* Retry this commad */
1121                         send_ack(usbd, STATUS_RETRY);
1122                 } else
1123                         send_ack(usbd, STATUS_DONE);
1124
1125                 return 1;
1126
1127         case COMMAND_DOWNLOAD_SPMODE:
1128                 printf("\nCOMMAND_DOWNLOAD_SPMODE\n");
1129
1130                 down_ram_addr = usbd->ram_addr + 0x2008000;
1131
1132                 usbd->recv_setup((char *)down_ram_addr, (int)len);
1133                 printf("Download to 0x%08x, %d bytes\n",
1134                                 (uint)down_ram_addr, (int)len);
1135
1136                 /* response */
1137                 send_ack(usbd, STATUS_DONE);
1138
1139                 /* Receive image by using dma */
1140                 recvlen = usbd->recv_data();
1141                 send_ack(usbd, STATUS_DONE);
1142
1143                 return 0;
1144
1145         /* Report partition info */
1146         case COMMAND_PARTITION_SYNC:
1147                 part_id = arg;
1148
1149 #ifdef CONFIG_CMD_UBI
1150                 if (ubi_mode) {
1151                         if (part_id == RAMDISK_PART_ID ||
1152                             part_id == FILESYSTEM_PART_ID ||
1153                             part_id == FILESYSTEM2_PART_ID) {
1154                                 /* change to yaffs style */
1155                                 get_part_info();
1156                         }
1157                 } else {
1158                         if (part_id == FILESYSTEM3_PART_ID) {
1159                                 /* change ubi style */
1160                                 get_part_info();
1161                         }
1162                 }
1163 #endif
1164
1165                 if (part_id == FILESYSTEM3_PART_ID)
1166                         part_id = get_part_id("UBI");
1167                 else if (part_id == MODEM_PART_ID)
1168                         part_id = get_part_id("modem");
1169                 else if (part_id == KERNEL_PART_ID)
1170                         part_id = get_part_id("kernel");
1171                 else if (part_id == BOOT_PART_ID)
1172                         part_id = get_part_id("bootloader");
1173 #ifdef CONFIG_MIRAGE
1174                 if (part_id)
1175                         part_id--;
1176 #endif
1177                 printf("COMMAND_PARTITION_SYNC - Part%d\n", part_id);
1178
1179                 blocks = parts[part_id]->size / 1024 / 128;
1180                 printf("COMMAND_PARTITION_SYNC - Part%d, %d blocks\n",
1181                                 part_id, blocks);
1182
1183                 send_ack(usbd, blocks);
1184                 return 1;
1185
1186         case COMMAND_WRITE_PART_0:
1187                 /* Do nothing */
1188                 printf("COMMAND_WRITE_PART_0\n");
1189                 return 1;
1190
1191         case COMMAND_WRITE_PART_1:
1192                 printf("COMMAND_WRITE_PART_BOOT\n");
1193                 part_id = get_part_id("bootloader");
1194                 img_type = IMG_BOOT;
1195                 break;
1196
1197         case COMMAND_WRITE_PART_2:
1198         case COMMAND_ERASE_PARAMETER:
1199                 printf("COMMAND_PARAMETER - not support!\n");
1200                 break;
1201
1202         case COMMAND_WRITE_PART_3:
1203                 printf("COMMAND_WRITE_KERNEL\n");
1204                 part_id = get_part_id("kernel");
1205                 img_type = IMG_KERNEL;
1206                 break;
1207
1208         case COMMAND_WRITE_PART_4:
1209                 printf("COMMAND_WRITE_ROOTFS\n");
1210                 part_id = get_part_id("Root");
1211                 img_type = IMG_FILESYSTEM;
1212                 ubi_update = arg;
1213                 break;
1214
1215         case COMMAND_WRITE_PART_5:
1216                 printf("COMMAND_WRITE_FACTORYFS\n");
1217                 part_id = get_part_id("Fact");
1218                 img_type = IMG_FILESYSTEM;
1219                 ubi_update = arg;
1220                 break;
1221
1222         case COMMAND_WRITE_PART_6:
1223                 printf("COMMAND_WRITE_DATAFS\n");
1224                 part_id = get_part_id("Data");
1225                 img_type = IMG_FILESYSTEM;
1226                 ubi_update = arg;
1227                 break;
1228
1229         case COMMAND_WRITE_PART_7:
1230                 printf("COMMAND_WRITE_UBI\n");
1231                 part_id = get_part_id("UBI");
1232                 img_type = IMG_FILESYSTEM;
1233                 ubi_update = 0;
1234                 /* someday, it will be deleted */
1235                 get_part_info();
1236                 break;
1237
1238         case COMMAND_WRITE_PART_8:
1239                 printf("COMMAND_WRITE_MODEM\n");
1240                 part_id = get_part_id("modem");
1241                 img_type = IMG_MODEM;
1242                 break;
1243
1244 #ifdef CONFIG_CMD_MMC
1245         case COMMAND_WRITE_PART_9:
1246                 printf("COMMAND_WRITE_MMC\n");
1247                 img_type = IMG_MMC;
1248                 mmc_part_write = arg;
1249                 break;
1250 #endif
1251
1252         case COMMAND_WRITE_IMG_0:
1253                 printf("COMMAND_WRITE_MBR\n");
1254                 img_type = IMG_MBR;
1255                 break;
1256
1257         case COMMAND_WRITE_IMG_1:
1258                 printf("COMMAND_WRITE_BOOTLOADER\n");
1259                 img_type = IMG_BOOTLOADER;
1260                 break;
1261
1262         case COMMAND_WRITE_IMG_2:
1263                 printf("COMMAND_WRITE_KERNEL\n");
1264                 img_type = IMG_KERNEL_V2;
1265                 part_id = 2;
1266                 break;
1267
1268         case COMMAND_WRITE_IMG_3:
1269                 printf("COMMAND_WRITE_MODEM\n");
1270                 img_type = IMG_MODEM_V2;
1271                 part_id = 2;
1272                 break;
1273
1274         case COMMAND_WRITE_IMG_4:
1275                 printf("COMMAND_WRITE_BOOT_PART\n");
1276                 part_id = 1;
1277                 img_type = IMG_V2;
1278                 break;
1279
1280         case COMMAND_WRITE_IMG_5:
1281                 printf("COMMAND_WRITE_SYSTEM_PART\n");
1282                 part_id = 2;
1283                 img_type = IMG_V2;
1284                 break;
1285
1286         case COMMAND_WRITE_IMG_6:
1287                 printf("COMMAND_WRITE_UMS_PART\n");
1288                 part_id = 4;
1289                 img_type = IMG_V2;
1290                 break;
1291
1292         case COMMAND_WRITE_UBI_INFO:
1293                 printf("COMMAND_WRITE_UBI_INFO\n");
1294
1295                 if (ubi_mode) {
1296 #ifdef CONFIG_CMD_UBI
1297                         part_id = arg-1;
1298                         sprintf(length, "0x%x", (uint)len);
1299                         ret = ubi_cmd(part_id, ramaddr, length, "begin");
1300                 } else {
1301 #endif
1302                         printf("Error: Not UBI mode\n");
1303                         ret = 1;
1304                 }
1305
1306                 /* Write image success -> Report status */
1307                 send_ack(usbd, ret);
1308
1309                 return !ret;
1310         /* Download complete -> reset */
1311         case COMMAND_RESET_PDA:
1312                 printf("\nDownload finished and Auto reset!\nWait........\n");
1313
1314                 /* Stop USB */
1315                 usbd->usb_stop();
1316
1317                 if (usbd->cpu_reset)
1318                         usbd->cpu_reset();
1319                 else
1320                         do_reset();
1321
1322                 return 0;
1323
1324         /* Error */
1325         case COMMAND_RESET_USB:
1326                 printf("\nError is occured!(maybe previous step)->\
1327                                 Turn off and restart!\n");
1328
1329                 /* Stop USB */
1330                 usbd->usb_stop();
1331                 return 0;
1332
1333         case COMMAND_RAM_BOOT:
1334                 usbd->usb_stop();
1335                 boot_cmd(ramaddr);
1336                 return 0;
1337
1338         case COMMAND_RAMDISK_MODE:
1339                 printf("COMMAND_RAMDISK_MODE\n");
1340 #ifdef CONFIG_RAMDISK_ADDR
1341                 if (arg) {
1342                         down_ram_addr = usbd->ram_addr;
1343                 } else {
1344                         down_ram_addr = CONFIG_RAMDISK_ADDR;
1345                         run_command("run ramboot", 0);
1346                 }
1347 #endif
1348                 return 1;
1349
1350 #ifdef CONFIG_DOWN_PHONE
1351         case COMMAND_DOWN_PHONE:
1352                 printf("COMMAND_RESET_PHONE\n");
1353
1354                 usbd_phone_down();
1355
1356                 send_ack(usbd, STATUS_DONE);
1357                 return 1;
1358
1359         case COMMAND_CHANGE_USB:
1360                 printf("COMMAND_CHANGE_USB\n");
1361
1362                 /* Stop USB */
1363                 usbd->usb_stop();
1364
1365                 usbd_path_change();
1366
1367                 do_reset();
1368                 return 0;
1369 #endif
1370         case COMMAND_CSA_CLEAR:
1371                 printf("COMMAND_CSA_CLEAR\n");
1372                 part_id = get_part_id("csa");
1373                 img_type = IMG_MODEM;
1374                 break;
1375
1376         case COMMAND_PROGRESS:
1377                 if (usbd->set_progress)
1378                         usbd->set_progress(arg);
1379                 return 1;
1380
1381         default:
1382                 printf("Error: Unknown command -> (%d)\n", (int)cmd);
1383                 return 1;
1384         }
1385
1386         if (img_type < IMG_V2)
1387                 ret = write_mtd_image(usbd, img_type, len, arg);
1388         else
1389                 ret = write_v2_image(usbd, img_type, len, arg);
1390
1391         if (ret < 0) {
1392                 send_ack(usbd, STATUS_ERROR);
1393                 return 0;
1394         } else if (ret) {
1395                 /* Retry this commad */
1396                 send_ack(usbd, STATUS_RETRY);
1397                 return 1;
1398         } else
1399                 send_ack(usbd, STATUS_DONE);
1400
1401         write_part++;
1402
1403         /* Reset write count for another image */
1404         if (flag) {
1405                 write_part = 0;
1406                 fs_offset = 0;
1407         }
1408
1409         return 1;
1410 }
1411
1412 static const char *recv_key = "SAMSUNG";
1413 static const char *tx_key = "MPL";
1414
1415 int do_usbd_down(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1416 {
1417         struct usbd_ops *usbd;
1418         int err;
1419         int ret;
1420
1421         if (argc > 1)
1422                 down_mode = simple_strtoul(argv[1], NULL, 10);
1423         else
1424                 down_mode = MODE_NORMAL;
1425
1426         printf("USB Downloader v%s\n", APP_VERSION);
1427
1428         /* get partition info */
1429         err = get_part_info();
1430         if (err)
1431                 return err;
1432
1433         /* interface setting */
1434         usbd = usbd_set_interface(&usbd_ops);
1435         down_ram_addr = usbd->ram_addr;
1436
1437 #ifdef CONFIG_CMD_MBR
1438         /* get mbr info */
1439         mbr_parts = get_mbr_table(mbr_offset);
1440         if (!mbr_parts) {
1441                 char *mbrparts;
1442
1443                 puts("using default MBR\n");
1444
1445                 mbrparts = getenv("mbrparts");
1446                 set_mbr_info(usbd, mbrparts, strlen(mbrparts));
1447         }
1448 #endif
1449
1450         /* init the usb controller */
1451         if (!usbd->usb_init()) {
1452                 usbd->down_cancel(0);
1453                 return 0;
1454         }
1455         mmc = find_mmc_device(usbd->mmc_dev);
1456         mmc_init(mmc);
1457
1458         /* receive setting */
1459         usbd->recv_setup(usbd->rx_data, usbd->rx_len);
1460
1461         /* detect the download request from Host PC */
1462         ret = usbd->recv_data();
1463         if (ret > 0) {
1464                 if (strncmp(usbd->rx_data, recv_key, strlen(recv_key)) == 0) {
1465                         printf("Download request from the Host PC\n");
1466                         msleep(30);
1467
1468                         strcpy(usbd->tx_data, tx_key);
1469                         usbd->send_data(usbd->tx_data, usbd->tx_len);
1470                 } else {
1471                         printf("No download request from the Host PC!! 1\n");
1472                         return 0;
1473                 }
1474         } else if (ret < 0) {
1475                 usbd->down_cancel(1);
1476                 return 0;
1477         } else {
1478                 usbd->down_cancel(0);
1479                 return 0;
1480         }
1481
1482         usbd->down_start();
1483         printf("Receive the packet\n");
1484
1485         /* receive the data from Host PC */
1486         while (1) {
1487                 usbd->recv_setup(usbd->rx_data, usbd->rx_len);
1488
1489                 ret = usbd->recv_data();
1490                 if (ret > 0) {
1491                         if (process_data(usbd) == 0) {
1492                                 usbd->down_cancel(1);
1493                                 return 0;
1494                         }
1495                 } else if (ret < 0) {
1496                         usbd->down_cancel(1);
1497                         return 0;
1498                 } else {
1499                         usbd->down_cancel(0);
1500                         return 0;
1501                 }
1502         }
1503
1504         return 0;
1505 }
1506
1507 U_BOOT_CMD(usbdown, CONFIG_SYS_MAXARGS, 1, do_usbd_down,
1508         "Initialize USB device and Run USB Downloader (specific)",
1509         "- normal mode\n"
1510         "usbdown mode - specific mode (0: NORAML, 1: FORCE)"
1511 );