common/cmd_usb.c

   1 /*
   2  * (C) Copyright 2001
   3  * Denis Peter, MPL AG Switzerland
   4  *
   5  * Most of this source has been derived from the Linux USB
   6  * project.
   7  *
   8  * See file CREDITS for list of people who contributed to this
   9  * project.
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24  * MA 02111-1307 USA
  25  *
  26  */
  27
  28 #include <common.h>
  29 #include <command.h>
  30 #include <asm/byteorder.h>
  31 #include <part.h>
  32 #include <usb.h>
  33
  34 #ifdef CONFIG_USB_STORAGE
  35 static int usb_stor_curr_dev = -1; /* current device */
  36 #endif
  37
  38 /* some display routines (info command) */
  39 char *usb_get_class_desc(unsigned char dclass)
  40 {
  41         switch (dclass) {
  42         case USB_CLASS_PER_INTERFACE:
  43                 return "See Interface";
  44         case USB_CLASS_AUDIO:
  45                 return "Audio";
  46         case USB_CLASS_COMM:
  47                 return "Communication";
  48         case USB_CLASS_HID:
  49                 return "Human Interface";
  50         case USB_CLASS_PRINTER:
  51                 return "Printer";
  52         case USB_CLASS_MASS_STORAGE:
  53                 return "Mass Storage";
  54         case USB_CLASS_HUB:
  55                 return "Hub";
  56         case USB_CLASS_DATA:
  57                 return "CDC Data";
  58         case USB_CLASS_VENDOR_SPEC:
  59                 return "Vendor specific";
  60         default:
  61                 return "";
  62         }
  63 }
  64
  65 void usb_display_class_sub(unsigned char dclass, unsigned char subclass,
  66                            unsigned char proto)
  67 {
  68         switch (dclass) {
  69         case USB_CLASS_PER_INTERFACE:
  70                 printf("See Interface");
  71                 break;
  72         case USB_CLASS_HID:
  73                 printf("Human Interface, Subclass: ");
  74                 switch (subclass) {
  75                 case USB_SUB_HID_NONE:
  76                         printf("None");
  77                         break;
  78                 case USB_SUB_HID_BOOT:
  79                         printf("Boot ");
  80                         switch (proto) {
  81                         case USB_PROT_HID_NONE:
  82                                 printf("None");
  83                                 break;
  84                         case USB_PROT_HID_KEYBOARD:
  85                                 printf("Keyboard");
  86                                 break;
  87                         case USB_PROT_HID_MOUSE:
  88                                 printf("Mouse");
  89                                 break;
  90                         default:
  91                                 printf("reserved");
  92                                 break;
  93                         }
  94                         break;
  95                 default:
  96                         printf("reserved");
  97                         break;
  98                 }
  99                 break;
 100         case USB_CLASS_MASS_STORAGE:
 101                 printf("Mass Storage, ");
 102                 switch (subclass) {
 103                 case US_SC_RBC:
 104                         printf("RBC ");
 105                         break;
 106                 case US_SC_8020:
 107                         printf("SFF-8020i (ATAPI)");
 108                         break;
 109                 case US_SC_QIC:
 110                         printf("QIC-157 (Tape)");
 111                         break;
 112                 case US_SC_UFI:
 113                         printf("UFI");
 114                         break;
 115                 case US_SC_8070:
 116                         printf("SFF-8070");
 117                         break;
 118                 case US_SC_SCSI:
 119                         printf("Transp. SCSI");
 120                         break;
 121                 default:
 122                         printf("reserved");
 123                         break;
 124                 }
 125                 printf(", ");
 126                 switch (proto) {
 127                 case US_PR_CB:
 128                         printf("Command/Bulk");
 129                         break;
 130                 case US_PR_CBI:
 131                         printf("Command/Bulk/Int");
 132                         break;
 133                 case US_PR_BULK:
 134                         printf("Bulk only");
 135                         break;
 136                 default:
 137                         printf("reserved");
 138                         break;
 139                 }
 140                 break;
 141         default:
 142                 printf("%s", usb_get_class_desc(dclass));
 143                 break;
 144         }
 145 }
 146
 147 void usb_display_string(struct usb_device *dev, int index)
 148 {
 149         char buffer[256];
 150         if (index != 0) {
 151                 if (usb_string(dev, index, &buffer[0], 256) > 0)
 152                         printf("String: \"%s\"", buffer);
 153         }
 154 }
 155
 156 void usb_display_desc(struct usb_device *dev)
 157 {
 158         if (dev->descriptor.bDescriptorType == USB_DT_DEVICE) {
 159                 printf("%d: %s,  USB Revision %x.%x\n", dev->devnum,
 160                 usb_get_class_desc(dev->config.if_desc[0].bInterfaceClass),
 161                                    (dev->descriptor.bcdUSB>>8) & 0xff,
 162                                    dev->descriptor.bcdUSB & 0xff);
 163
 164                 if (strlen(dev->mf) || strlen(dev->prod) ||
 165                     strlen(dev->serial))
 166                         printf(" - %s %s %s\n", dev->mf, dev->prod,
 167                                 dev->serial);
 168                 if (dev->descriptor.bDeviceClass) {
 169                         printf(" - Class: ");
 170                         usb_display_class_sub(dev->descriptor.bDeviceClass,
 171                                               dev->descriptor.bDeviceSubClass,
 172                                               dev->descriptor.bDeviceProtocol);
 173                         printf("\n");
 174                 } else {
 175                         printf(" - Class: (from Interface) %s\n",
 176                                usb_get_class_desc(
 177                                 dev->config.if_desc[0].bInterfaceClass));
 178                 }
 179                 printf(" - PacketSize: %d  Configurations: %d\n",
 180                         dev->descriptor.bMaxPacketSize0,
 181                         dev->descriptor.bNumConfigurations);
 182                 printf(" - Vendor: 0x%04x  Product 0x%04x Version %d.%d\n",
 183                         dev->descriptor.idVendor, dev->descriptor.idProduct,
 184                         (dev->descriptor.bcdDevice>>8) & 0xff,
 185                         dev->descriptor.bcdDevice & 0xff);
 186         }
 187
 188 }
 189
 190 void usb_display_conf_desc(struct usb_config_descriptor *config,
 191                            struct usb_device *dev)
 192 {
 193         printf("   Configuration: %d\n", config->bConfigurationValue);
 194         printf("   - Interfaces: %d %s%s%dmA\n", config->bNumInterfaces,
 195                (config->bmAttributes & 0x40) ? "Self Powered " : "Bus Powered ",
 196                (config->bmAttributes & 0x20) ? "Remote Wakeup " : "",
 197                 config->MaxPower*2);
 198         if (config->iConfiguration) {
 199                 printf("   - ");
 200                 usb_display_string(dev, config->iConfiguration);
 201                 printf("\n");
 202         }
 203 }
 204
 205 void usb_display_if_desc(struct usb_interface_descriptor *ifdesc,
 206                          struct usb_device *dev)
 207 {
 208         printf("     Interface: %d\n", ifdesc->bInterfaceNumber);
 209         printf("     - Alternate Setting %d, Endpoints: %d\n",
 210                 ifdesc->bAlternateSetting, ifdesc->bNumEndpoints);
 211         printf("     - Class ");
 212         usb_display_class_sub(ifdesc->bInterfaceClass,
 213                 ifdesc->bInterfaceSubClass, ifdesc->bInterfaceProtocol);
 214         printf("\n");
 215         if (ifdesc->iInterface) {
 216                 printf("     - ");
 217                 usb_display_string(dev, ifdesc->iInterface);
 218                 printf("\n");
 219         }
 220 }
 221
 222 void usb_display_ep_desc(struct usb_endpoint_descriptor *epdesc)
 223 {
 224         printf("     - Endpoint %d %s ", epdesc->bEndpointAddress & 0xf,
 225                 (epdesc->bEndpointAddress & 0x80) ? "In" : "Out");
 226         switch ((epdesc->bmAttributes & 0x03)) {
 227         case 0:
 228                 printf("Control");
 229                 break;
 230         case 1:
 231                 printf("Isochronous");
 232                 break;
 233         case 2:
 234                 printf("Bulk");
 235                 break;
 236         case 3:
 237                 printf("Interrupt");
 238                 break;
 239         }
 240         printf(" MaxPacket %d", epdesc->wMaxPacketSize);
 241         if ((epdesc->bmAttributes & 0x03) == 0x3)
 242                 printf(" Interval %dms", epdesc->bInterval);
 243         printf("\n");
 244 }
 245
 246 /* main routine to diasplay the configs, interfaces and endpoints */
 247 void usb_display_config(struct usb_device *dev)
 248 {
 249         struct usb_config_descriptor *config;
 250         struct usb_interface_descriptor *ifdesc;
 251         struct usb_endpoint_descriptor *epdesc;
 252         int i, ii;
 253
 254         config = &dev->config;
 255         usb_display_conf_desc(config, dev);
 256         for (i = 0; i < config->no_of_if; i++) {
 257                 ifdesc = &config->if_desc[i];
 258                 usb_display_if_desc(ifdesc, dev);
 259                 for (ii = 0; ii < ifdesc->no_of_ep; ii++) {
 260                         epdesc = &ifdesc->ep_desc[ii];
 261                         usb_display_ep_desc(epdesc);
 262                 }
 263         }
 264         printf("\n");
 265 }
 266
 267 static inline char *portspeed(int speed)
 268 {
 269         if (speed == USB_SPEED_HIGH)
 270                 return "480 Mb/s";
 271         else if (speed == USB_SPEED_LOW)
 272                 return "1.5 Mb/s";
 273         else
 274                 return "12 Mb/s";
 275 }
 276
 277 /* shows the device tree recursively */
 278 void usb_show_tree_graph(struct usb_device *dev, char *pre)
 279 {
 280         int i, index;
 281         int has_child, last_child, port;
 282
 283         index = strlen(pre);
 284         printf(" %s", pre);
 285         /* check if the device has connected children */
 286         has_child = 0;
 287         for (i = 0; i < dev->maxchild; i++) {
 288                 if (dev->children[i] != NULL)
 289                         has_child = 1;
 290         }
 291         /* check if we are the last one */
 292         last_child = 1;
 293         if (dev->parent != NULL) {
 294                 for (i = 0; i < dev->parent->maxchild; i++) {
 295                         /* search for children */
 296                         if (dev->parent->children[i] == dev) {
 297                                 /* found our pointer, see if we have a
 298                                  * little sister
 299                                  */
 300                                 port = i;
 301                                 while (i++ < dev->parent->maxchild) {
 302                                         if (dev->parent->children[i] != NULL) {
 303                                                 /* found a sister */
 304                                                 last_child = 0;
 305                                                 break;
 306                                         } /* if */
 307                                 } /* while */
 308                         } /* device found */
 309                 } /* for all children of the parent */
 310                 printf("\b+-");
 311                 /* correct last child */
 312                 if (last_child)
 313                         pre[index-1] = ' ';
 314         } /* if not root hub */
 315         else
 316                 printf(" ");
 317         printf("%d ", dev->devnum);
 318         pre[index++] = ' ';
 319         pre[index++] = has_child ? '|' : ' ';
 320         pre[index] = 0;
 321         printf(" %s (%s, %dmA)\n", usb_get_class_desc(
 322                                         dev->config.if_desc[0].bInterfaceClass),
 323                                         portspeed(dev->speed),
 324                                         dev->config.MaxPower * 2);
 325         if (strlen(dev->mf) || strlen(dev->prod) || strlen(dev->serial))
 326                 printf(" %s  %s %s %s\n", pre, dev->mf, dev->prod, dev->serial);
 327         printf(" %s\n", pre);
 328         if (dev->maxchild > 0) {
 329                 for (i = 0; i < dev->maxchild; i++) {
 330                         if (dev->children[i] != NULL) {
 331                                 usb_show_tree_graph(dev->children[i], pre);
 332                                 pre[index] = 0;
 333                         }
 334                 }
 335         }
 336 }
 337
 338 /* main routine for the tree command */
 339 void usb_show_tree(struct usb_device *dev)
 340 {
 341         char preamble[32];
 342
 343         memset(preamble, 0, 32);
 344         usb_show_tree_graph(dev, &preamble[0]);
 345 }
 346
 347
 348 /******************************************************************************
 349  * usb boot command intepreter. Derived from diskboot
 350  */
 351 #ifdef CONFIG_USB_STORAGE
 352 int do_usbboot(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 353 {
 354         char *boot_device = NULL;
 355         char *ep;
 356         int dev, part = 1, rcode;
 357         ulong addr, cnt;
 358         disk_partition_t info;
 359         image_header_t *hdr;
 360         block_dev_desc_t *stor_dev;
 361 #if defined(CONFIG_FIT)
 362         const void *fit_hdr = NULL;
 363 #endif
 364
 365         switch (argc) {
 366         case 1:
 367                 addr = CONFIG_SYS_LOAD_ADDR;
 368                 boot_device = getenv("bootdevice");
 369                 break;
 370         case 2:
 371                 addr = simple_strtoul(argv[1], NULL, 16);
 372                 boot_device = getenv("bootdevice");
 373                 break;
 374         case 3:
 375                 addr = simple_strtoul(argv[1], NULL, 16);
 376                 boot_device = argv[2];
 377                 break;
 378         default:
 379                 cmd_usage(cmdtp);
 380                 return 1;
 381         }
 382
 383         if (!boot_device) {
 384                 puts("\n** No boot device **\n");
 385                 return 1;
 386         }
 387
 388         dev = simple_strtoul(boot_device, &ep, 16);
 389         stor_dev = usb_stor_get_dev(dev);
 390         if (stor_dev->type == DEV_TYPE_UNKNOWN) {
 391                 printf("\n** Device %d not available\n", dev);
 392                 return 1;
 393         }
 394         if (stor_dev->block_read == NULL) {
 395                 printf("storage device not initialized. Use usb scan\n");
 396                 return 1;
 397         }
 398         if (*ep) {
 399                 if (*ep != ':') {
 400                         puts("\n** Invalid boot device, use `dev[:part]' **\n");
 401                         return 1;
 402                 }
 403                 part = simple_strtoul(++ep, NULL, 16);
 404         }
 405
 406         if (get_partition_info(stor_dev, part, &info)) {
 407                 /* try to boot raw .... */
 408                 strncpy((char *)&info.type[0], BOOT_PART_TYPE,
 409                         sizeof(BOOT_PART_TYPE));
 410                 strncpy((char *)&info.name[0], "Raw", 4);
 411                 info.start = 0;
 412                 info.blksz = 0x200;
 413                 info.size = 2880;
 414                 printf("error reading partinfo...try to boot raw\n");
 415         }
 416         if ((strncmp((char *)info.type, BOOT_PART_TYPE,
 417             sizeof(info.type)) != 0) &&
 418             (strncmp((char *)info.type, BOOT_PART_COMP,
 419             sizeof(info.type)) != 0)) {
 420                 printf("\n** Invalid partition type \"%.32s\""
 421                         " (expect \"" BOOT_PART_TYPE "\")\n",
 422                         info.type);
 423                 return 1;
 424         }
 425         printf("\nLoading from USB device %d, partition %d: "
 426                 "Name: %.32s  Type: %.32s\n",
 427                 dev, part, info.name, info.type);
 428
 429         debug("First Block: %ld,  # of blocks: %ld, Block Size: %ld\n",
 430                 info.start, info.size, info.blksz);
 431
 432         if (stor_dev->block_read(dev, info.start, 1, (ulong *)addr) != 1) {
 433                 printf("** Read error on %d:%d\n", dev, part);
 434                 return 1;
 435         }
 436
 437         switch (genimg_get_format((void *)addr)) {
 438         case IMAGE_FORMAT_LEGACY:
 439                 hdr = (image_header_t *)addr;
 440
 441                 if (!image_check_hcrc(hdr)) {
 442                         puts("\n** Bad Header Checksum **\n");
 443                         return 1;
 444                 }
 445
 446                 image_print_contents(hdr);
 447
 448                 cnt = image_get_image_size(hdr);
 449                 break;
 450 #if defined(CONFIG_FIT)
 451         case IMAGE_FORMAT_FIT:
 452                 fit_hdr = (const void *)addr;
 453                 puts("Fit image detected...\n");
 454
 455                 cnt = fit_get_size(fit_hdr);
 456                 break;
 457 #endif
 458         default:
 459                 puts("** Unknown image type\n");
 460                 return 1;
 461         }
 462
 463         cnt += info.blksz - 1;
 464         cnt /= info.blksz;
 465         cnt -= 1;
 466
 467         if (stor_dev->block_read(dev, info.start+1, cnt,
 468                       (ulong *)(addr+info.blksz)) != cnt) {
 469                 printf("\n** Read error on %d:%d\n", dev, part);
 470                 return 1;
 471         }
 472
 473 #if defined(CONFIG_FIT)
 474         /* This cannot be done earlier, we need complete FIT image in RAM
 475          * first
 476          */
 477         if (genimg_get_format((void *)addr) == IMAGE_FORMAT_FIT) {
 478                 if (!fit_check_format(fit_hdr)) {
 479                         puts("** Bad FIT image format\n");
 480                         return 1;
 481                 }
 482                 fit_print_contents(fit_hdr);
 483         }
 484 #endif
 485
 486         /* Loading ok, update default load address */
 487         load_addr = addr;
 488
 489         flush_cache(addr, (cnt+1)*info.blksz);
 490
 491         /* Check if we should attempt an auto-start */
 492         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
 493                 char *local_args[2];
 494                 extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
 495                 local_args[0] = argv[0];
 496                 local_args[1] = NULL;
 497                 printf("Automatic boot of image at addr 0x%08lX ...\n", addr);
 498                 rcode = do_bootm(cmdtp, 0, 1, local_args);
 499                 return rcode;
 500         }
 501         return 0;
 502 }
 503 #endif /* CONFIG_USB_STORAGE */
 504
 505
 506 /******************************************************************************
 507  * usb command intepreter
 508  */
 509 int do_usb(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 510 {
 511
 512         int i;
 513         struct usb_device *dev = NULL;
 514         extern char usb_started;
 515 #ifdef CONFIG_USB_STORAGE
 516         block_dev_desc_t *stor_dev;
 517 #endif
 518
 519         if ((strncmp(argv[1], "reset", 5) == 0) ||
 520                  (strncmp(argv[1], "start", 5) == 0)) {
 521                 usb_stop();
 522                 printf("(Re)start USB...\n");
 523                 i = usb_init();
 524 #ifdef CONFIG_USB_STORAGE
 525                 /* try to recognize storage devices immediately */
 526                 if (i >= 0)
 527                         usb_stor_curr_dev = usb_stor_scan(1);
 528 #endif
 529                 return 0;
 530         }
 531         if (strncmp(argv[1], "stop", 4) == 0) {
 532 #ifdef CONFIG_USB_KEYBOARD
 533                 if (argc == 2) {
 534                         if (usb_kbd_deregister() != 0) {
 535                                 printf("USB not stopped: usbkbd still"
 536                                         " using USB\n");
 537                                 return 1;
 538                         }
 539                 } else {
 540                         /* forced stop, switch console in to serial */
 541                         console_assign(stdin, "serial");
 542                         usb_kbd_deregister();
 543                 }
 544 #endif
 545                 printf("stopping USB..\n");
 546                 usb_stop();
 547                 return 0;
 548         }
 549         if (!usb_started) {
 550                 printf("USB is stopped. Please issue 'usb start' first.\n");
 551                 return 1;
 552         }
 553         if (strncmp(argv[1], "tree", 4) == 0) {
 554                 printf("\nDevice Tree:\n");
 555                 usb_show_tree(usb_get_dev_index(0));
 556                 return 0;
 557         }
 558         if (strncmp(argv[1], "inf", 3) == 0) {
 559                 int d;
 560                 if (argc == 2) {
 561                         for (d = 0; d < USB_MAX_DEVICE; d++) {
 562                                 dev = usb_get_dev_index(d);
 563                                 if (dev == NULL)
 564                                         break;
 565                                 usb_display_desc(dev);
 566                                 usb_display_config(dev);
 567                         }
 568                         return 0;
 569                 } else {
 570                         int d;
 571
 572                         i = simple_strtoul(argv[2], NULL, 16);
 573                         printf("config for device %d\n", i);
 574                         for (d = 0; d < USB_MAX_DEVICE; d++) {
 575                                 dev = usb_get_dev_index(d);
 576                                 if (dev == NULL)
 577                                         break;
 578                                 if (dev->devnum == i)
 579                                         break;
 580                         }
 581                         if (dev == NULL) {
 582                                 printf("*** NO Device avaiable ***\n");
 583                                 return 0;
 584                         } else {
 585                                 usb_display_desc(dev);
 586                                 usb_display_config(dev);
 587                         }
 588                 }
 589                 return 0;
 590         }
 591 #ifdef CONFIG_USB_STORAGE
 592         if (strncmp(argv[1], "stor", 4) == 0)
 593                 return usb_stor_info();
 594
 595         if (strncmp(argv[1], "part", 4) == 0) {
 596                 int devno, ok = 0;
 597                 if (argc == 2) {
 598                         for (devno = 0; devno < USB_MAX_STOR_DEV; ++devno) {
 599                                 stor_dev = usb_stor_get_dev(devno);
 600                                 if (stor_dev->type != DEV_TYPE_UNKNOWN) {
 601                                         ok++;
 602                                         if (devno)
 603                                                 printf("\n");
 604                                         printf("print_part of %x\n", devno);
 605                                         print_part(stor_dev);
 606                                 }
 607                         }
 608                 } else {
 609                         devno = simple_strtoul(argv[2], NULL, 16);
 610                         stor_dev = usb_stor_get_dev(devno);
 611                         if (stor_dev->type != DEV_TYPE_UNKNOWN) {
 612                                 ok++;
 613                                 printf("print_part of %x\n", devno);
 614                                 print_part(stor_dev);
 615                         }
 616                 }
 617                 if (!ok) {
 618                         printf("\nno USB devices available\n");
 619                         return 1;
 620                 }
 621                 return 0;
 622         }
 623         if (strcmp(argv[1], "read") == 0) {
 624                 if (usb_stor_curr_dev < 0) {
 625                         printf("no current device selected\n");
 626                         return 1;
 627                 }
 628                 if (argc == 5) {
 629                         unsigned long addr = simple_strtoul(argv[2], NULL, 16);
 630                         unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
 631                         unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
 632                         unsigned long n;
 633                         printf("\nUSB read: device %d block # %ld, count %ld"
 634                                 " ... ", usb_stor_curr_dev, blk, cnt);
 635                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
 636                         n = stor_dev->block_read(usb_stor_curr_dev, blk, cnt,
 637                                                  (ulong *)addr);
 638                         printf("%ld blocks read: %s\n", n,
 639                                 (n == cnt) ? "OK" : "ERROR");
 640                         if (n == cnt)
 641                                 return 0;
 642                         return 1;
 643                 }
 644         }
 645         if (strncmp(argv[1], "dev", 3) == 0) {
 646                 if (argc == 3) {
 647                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
 648                         printf("\nUSB device %d: ", dev);
 649                         if (dev >= USB_MAX_STOR_DEV) {
 650                                 printf("unknown device\n");
 651                                 return 1;
 652                         }
 653                         printf("\n    Device %d: ", dev);
 654                         stor_dev = usb_stor_get_dev(dev);
 655                         dev_print(stor_dev);
 656                         if (stor_dev->type == DEV_TYPE_UNKNOWN)
 657                                 return 1;
 658                         usb_stor_curr_dev = dev;
 659                         printf("... is now current device\n");
 660                         return 0;
 661                 } else {
 662                         printf("\nUSB device %d: ", usb_stor_curr_dev);
 663                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
 664                         dev_print(stor_dev);
 665                         if (stor_dev->type == DEV_TYPE_UNKNOWN)
 666                                 return 1;
 667                         return 0;
 668                 }
 669                 return 0;
 670         }
 671 #endif /* CONFIG_USB_STORAGE */
 672         cmd_usage(cmdtp);
 673         return 1;
 674 }
 675
 676 #ifdef CONFIG_USB_STORAGE
 677 U_BOOT_CMD(
 678         usb,    5,      1,      do_usb,
 679         "USB sub-system",
 680         "reset - reset (rescan) USB controller\n"
 681         "usb stop [f]  - stop USB [f]=force stop\n"
 682         "usb tree  - show USB device tree\n"
 683         "usb info [dev] - show available USB devices\n"
 684         "usb storage  - show details of USB storage devices\n"
 685         "usb dev [dev] - show or set current USB storage device\n"
 686         "usb part [dev] - print partition table of one or all USB storage"
 687         " devices\n"
 688         "usb read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
 689         "    to memory address `addr'\n"
 690 );
 691
 692
 693 U_BOOT_CMD(
 694         usbboot,        3,      1,      do_usbboot,
 695         "boot from USB device",
 696         "loadAddr dev:part\n"
 697 );
 698
 699 #else
 700 U_BOOT_CMD(
 701         usb,    5,      1,      do_usb,
 702         "USB sub-system",
 703         "reset - reset (rescan) USB controller\n"
 704         "usb  tree  - show USB device tree\n"
 705         "usb  info [dev] - show available USB devices\n"
 706 );
 707 #endif