git.sur5r.net Git - u-boot/blob - 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 /* shows the device tree recursively */
 268 void usb_show_tree_graph(struct usb_device *dev, char *pre)
 269 {
 270         int i, index;
 271         int has_child, last_child, port;
 272
 273         index = strlen(pre);
 274         printf(" %s", pre);
 275         /* check if the device has connected children */
 276         has_child = 0;
 277         for (i = 0; i < dev->maxchild; i++) {
 278                 if (dev->children[i] != NULL)
 279                         has_child = 1;
 280         }
 281         /* check if we are the last one */
 282         last_child = 1;
 283         if (dev->parent != NULL) {
 284                 for (i = 0; i < dev->parent->maxchild; i++) {
 285                         /* search for children */
 286                         if (dev->parent->children[i] == dev) {
 287                                 /* found our pointer, see if we have a
 288                                  * little sister
 289                                  */
 290                                 port = i;
 291                                 while (i++ < dev->parent->maxchild) {
 292                                         if (dev->parent->children[i] != NULL) {
 293                                                 /* found a sister */
 294                                                 last_child = 0;
 295                                                 break;
 296                                         } /* if */
 297                                 } /* while */
 298                         } /* device found */
 299                 } /* for all children of the parent */
 300                 printf("\b+-");
 301                 /* correct last child */
 302                 if (last_child)
 303                         pre[index-1] = ' ';
 304         } /* if not root hub */
 305         else
 306                 printf(" ");
 307         printf("%d ", dev->devnum);
 308         pre[index++] = ' ';
 309         pre[index++] = has_child ? '|' : ' ';
 310         pre[index] = 0;
 311         printf(" %s (%s, %dmA)\n", usb_get_class_desc(
 312                                         dev->config.if_desc[0].bInterfaceClass),
 313                                         dev->slow ? "1.5MBit/s" : "12MBit/s",
 314                                         dev->config.MaxPower * 2);
 315         if (strlen(dev->mf) || strlen(dev->prod) || strlen(dev->serial))
 316                 printf(" %s  %s %s %s\n", pre, dev->mf, dev->prod, dev->serial);
 317         printf(" %s\n", pre);
 318         if (dev->maxchild > 0) {
 319                 for (i = 0; i < dev->maxchild; i++) {
 320                         if (dev->children[i] != NULL) {
 321                                 usb_show_tree_graph(dev->children[i], pre);
 322                                 pre[index] = 0;
 323                         }
 324                 }
 325         }
 326 }
 327
 328 /* main routine for the tree command */
 329 void usb_show_tree(struct usb_device *dev)
 330 {
 331         char preamble[32];
 332
 333         memset(preamble, 0, 32);
 334         usb_show_tree_graph(dev, &preamble[0]);
 335 }
 336
 337
 338 /******************************************************************************
 339  * usb boot command intepreter. Derived from diskboot
 340  */
 341 #ifdef CONFIG_USB_STORAGE
 342 int do_usbboot(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 343 {
 344         char *boot_device = NULL;
 345         char *ep;
 346         int dev, part = 1, rcode;
 347         ulong addr, cnt;
 348         disk_partition_t info;
 349         image_header_t *hdr;
 350         block_dev_desc_t *stor_dev;
 351 #if defined(CONFIG_FIT)
 352         const void *fit_hdr = NULL;
 353 #endif
 354
 355         switch (argc) {
 356         case 1:
 357                 addr = CONFIG_SYS_LOAD_ADDR;
 358                 boot_device = getenv("bootdevice");
 359                 break;
 360         case 2:
 361                 addr = simple_strtoul(argv[1], NULL, 16);
 362                 boot_device = getenv("bootdevice");
 363                 break;
 364         case 3:
 365                 addr = simple_strtoul(argv[1], NULL, 16);
 366                 boot_device = argv[2];
 367                 break;
 368         default:
 369                 printf("Usage:\n%s\n", cmdtp->usage);
 370                 return 1;
 371         }
 372
 373         if (!boot_device) {
 374                 puts("\n** No boot device **\n");
 375                 return 1;
 376         }
 377
 378         dev = simple_strtoul(boot_device, &ep, 16);
 379         stor_dev = usb_stor_get_dev(dev);
 380         if (stor_dev->type == DEV_TYPE_UNKNOWN) {
 381                 printf("\n** Device %d not available\n", dev);
 382                 return 1;
 383         }
 384         if (stor_dev->block_read == NULL) {
 385                 printf("storage device not initialized. Use usb scan\n");
 386                 return 1;
 387         }
 388         if (*ep) {
 389                 if (*ep != ':') {
 390                         puts("\n** Invalid boot device, use `dev[:part]' **\n");
 391                         return 1;
 392                 }
 393                 part = simple_strtoul(++ep, NULL, 16);
 394         }
 395
 396         if (get_partition_info(stor_dev, part, &info)) {
 397                 /* try to boot raw .... */
 398                 strncpy((char *)&info.type[0], BOOT_PART_TYPE,
 399                         sizeof(BOOT_PART_TYPE));
 400                 strncpy((char *)&info.name[0], "Raw", 4);
 401                 info.start = 0;
 402                 info.blksz = 0x200;
 403                 info.size = 2880;
 404                 printf("error reading partinfo...try to boot raw\n");
 405         }
 406         if ((strncmp((char *)info.type, BOOT_PART_TYPE,
 407             sizeof(info.type)) != 0) &&
 408             (strncmp((char *)info.type, BOOT_PART_COMP,
 409             sizeof(info.type)) != 0)) {
 410                 printf("\n** Invalid partition type \"%.32s\""
 411                         " (expect \"" BOOT_PART_TYPE "\")\n",
 412                         info.type);
 413                 return 1;
 414         }
 415         printf("\nLoading from USB device %d, partition %d: "
 416                 "Name: %.32s  Type: %.32s\n",
 417                 dev, part, info.name, info.type);
 418
 419         debug("First Block: %ld,  # of blocks: %ld, Block Size: %ld\n",
 420                 info.start, info.size, info.blksz);
 421
 422         if (stor_dev->block_read(dev, info.start, 1, (ulong *)addr) != 1) {
 423                 printf("** Read error on %d:%d\n", dev, part);
 424                 return 1;
 425         }
 426
 427         switch (genimg_get_format((void *)addr)) {
 428         case IMAGE_FORMAT_LEGACY:
 429                 hdr = (image_header_t *)addr;
 430
 431                 if (!image_check_hcrc(hdr)) {
 432                         puts("\n** Bad Header Checksum **\n");
 433                         return 1;
 434                 }
 435
 436                 image_print_contents(hdr);
 437
 438                 cnt = image_get_image_size(hdr);
 439                 break;
 440 #if defined(CONFIG_FIT)
 441         case IMAGE_FORMAT_FIT:
 442                 fit_hdr = (const void *)addr;
 443                 puts("Fit image detected...\n");
 444
 445                 cnt = fit_get_size(fit_hdr);
 446                 break;
 447 #endif
 448         default:
 449                 puts("** Unknown image type\n");
 450                 return 1;
 451         }
 452
 453         cnt += info.blksz - 1;
 454         cnt /= info.blksz;
 455         cnt -= 1;
 456
 457         if (stor_dev->block_read(dev, info.start+1, cnt,
 458                       (ulong *)(addr+info.blksz)) != cnt) {
 459                 printf("\n** Read error on %d:%d\n", dev, part);
 460                 return 1;
 461         }
 462
 463 #if defined(CONFIG_FIT)
 464         /* This cannot be done earlier, we need complete FIT image in RAM
 465          * first
 466          */
 467         if (genimg_get_format((void *)addr) == IMAGE_FORMAT_FIT) {
 468                 if (!fit_check_format(fit_hdr)) {
 469                         puts("** Bad FIT image format\n");
 470                         return 1;
 471                 }
 472                 fit_print_contents(fit_hdr);
 473         }
 474 #endif
 475
 476         /* Loading ok, update default load address */
 477         load_addr = addr;
 478
 479         flush_cache(addr, (cnt+1)*info.blksz);
 480
 481         /* Check if we should attempt an auto-start */
 482         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
 483                 char *local_args[2];
 484                 extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
 485                 local_args[0] = argv[0];
 486                 local_args[1] = NULL;
 487                 printf("Automatic boot of image at addr 0x%08lX ...\n", addr);
 488                 rcode = do_bootm(cmdtp, 0, 1, local_args);
 489                 return rcode;
 490         }
 491         return 0;
 492 }
 493 #endif /* CONFIG_USB_STORAGE */
 494
 495
 496 /******************************************************************************
 497  * usb command intepreter
 498  */
 499 int do_usb(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 500 {
 501
 502         int i;
 503         struct usb_device *dev = NULL;
 504         extern char usb_started;
 505 #ifdef CONFIG_USB_STORAGE
 506         block_dev_desc_t *stor_dev;
 507 #endif
 508
 509         if ((strncmp(argv[1], "reset", 5) == 0) ||
 510                  (strncmp(argv[1], "start", 5) == 0)) {
 511                 usb_stop();
 512                 printf("(Re)start USB...\n");
 513                 i = usb_init();
 514 #ifdef CONFIG_USB_STORAGE
 515                 /* try to recognize storage devices immediately */
 516                 if (i >= 0)
 517                         usb_stor_curr_dev = usb_stor_scan(1);
 518 #endif
 519                 return 0;
 520         }
 521         if (strncmp(argv[1], "stop", 4) == 0) {
 522 #ifdef CONFIG_USB_KEYBOARD
 523                 if (argc == 2) {
 524                         if (usb_kbd_deregister() != 0) {
 525                                 printf("USB not stopped: usbkbd still"
 526                                         " using USB\n");
 527                                 return 1;
 528                         }
 529                 } else {
 530                         /* forced stop, switch console in to serial */
 531                         console_assign(stdin, "serial");
 532                         usb_kbd_deregister();
 533                 }
 534 #endif
 535                 printf("stopping USB..\n");
 536                 usb_stop();
 537                 return 0;
 538         }
 539         if (!usb_started) {
 540                 printf("USB is stopped. Please issue 'usb start' first.\n");
 541                 return 1;
 542         }
 543         if (strncmp(argv[1], "tree", 4) == 0) {
 544                 printf("\nDevice Tree:\n");
 545                 usb_show_tree(usb_get_dev_index(0));
 546                 return 0;
 547         }
 548         if (strncmp(argv[1], "inf", 3) == 0) {
 549                 int d;
 550                 if (argc == 2) {
 551                         for (d = 0; d < USB_MAX_DEVICE; d++) {
 552                                 dev = usb_get_dev_index(d);
 553                                 if (dev == NULL)
 554                                         break;
 555                                 usb_display_desc(dev);
 556                                 usb_display_config(dev);
 557                         }
 558                         return 0;
 559                 } else {
 560                         int d;
 561
 562                         i = simple_strtoul(argv[2], NULL, 16);
 563                         printf("config for device %d\n", i);
 564                         for (d = 0; d < USB_MAX_DEVICE; d++) {
 565                                 dev = usb_get_dev_index(d);
 566                                 if (dev == NULL)
 567                                         break;
 568                                 if (dev->devnum == i)
 569                                         break;
 570                         }
 571                         if (dev == NULL) {
 572                                 printf("*** NO Device avaiable ***\n");
 573                                 return 0;
 574                         } else {
 575                                 usb_display_desc(dev);
 576                                 usb_display_config(dev);
 577                         }
 578                 }
 579                 return 0;
 580         }
 581 #ifdef CONFIG_USB_STORAGE
 582         if (strncmp(argv[1], "stor", 4) == 0)
 583                 return usb_stor_info();
 584
 585         if (strncmp(argv[1], "part", 4) == 0) {
 586                 int devno, ok = 0;
 587                 if (argc == 2) {
 588                         for (devno = 0; devno < USB_MAX_STOR_DEV; ++devno) {
 589                                 stor_dev = usb_stor_get_dev(devno);
 590                                 if (stor_dev->type != DEV_TYPE_UNKNOWN) {
 591                                         ok++;
 592                                         if (devno)
 593                                                 printf("\n");
 594                                         printf("print_part of %x\n", devno);
 595                                         print_part(stor_dev);
 596                                 }
 597                         }
 598                 } else {
 599                         devno = simple_strtoul(argv[2], NULL, 16);
 600                         stor_dev = usb_stor_get_dev(devno);
 601                         if (stor_dev->type != DEV_TYPE_UNKNOWN) {
 602                                 ok++;
 603                                 printf("print_part of %x\n", devno);
 604                                 print_part(stor_dev);
 605                         }
 606                 }
 607                 if (!ok) {
 608                         printf("\nno USB devices available\n");
 609                         return 1;
 610                 }
 611                 return 0;
 612         }
 613         if (strcmp(argv[1], "read") == 0) {
 614                 if (usb_stor_curr_dev < 0) {
 615                         printf("no current device selected\n");
 616                         return 1;
 617                 }
 618                 if (argc == 5) {
 619                         unsigned long addr = simple_strtoul(argv[2], NULL, 16);
 620                         unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
 621                         unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
 622                         unsigned long n;
 623                         printf("\nUSB read: device %d block # %ld, count %ld"
 624                                 " ... ", usb_stor_curr_dev, blk, cnt);
 625                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
 626                         n = stor_dev->block_read(usb_stor_curr_dev, blk, cnt,
 627                                                  (ulong *)addr);
 628                         printf("%ld blocks read: %s\n", n,
 629                                 (n == cnt) ? "OK" : "ERROR");
 630                         if (n == cnt)
 631                                 return 0;
 632                         return 1;
 633                 }
 634         }
 635         if (strncmp(argv[1], "dev", 3) == 0) {
 636                 if (argc == 3) {
 637                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
 638                         printf("\nUSB device %d: ", dev);
 639                         if (dev >= USB_MAX_STOR_DEV) {
 640                                 printf("unknown device\n");
 641                                 return 1;
 642                         }
 643                         printf("\n    Device %d: ", dev);
 644                         stor_dev = usb_stor_get_dev(dev);
 645                         dev_print(stor_dev);
 646                         if (stor_dev->type == DEV_TYPE_UNKNOWN)
 647                                 return 1;
 648                         usb_stor_curr_dev = dev;
 649                         printf("... is now current device\n");
 650                         return 0;
 651                 } else {
 652                         printf("\nUSB device %d: ", usb_stor_curr_dev);
 653                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
 654                         dev_print(stor_dev);
 655                         if (stor_dev->type == DEV_TYPE_UNKNOWN)
 656                                 return 1;
 657                         return 0;
 658                 }
 659                 return 0;
 660         }
 661 #endif /* CONFIG_USB_STORAGE */
 662         printf("Usage:\n%s\n", cmdtp->usage);
 663         return 1;
 664 }
 665
 666 #ifdef CONFIG_USB_STORAGE
 667 U_BOOT_CMD(
 668         usb,    5,      1,      do_usb,
 669         "usb     - USB sub-system\n",
 670         "reset - reset (rescan) USB controller\n"
 671         "usb stop [f]  - stop USB [f]=force stop\n"
 672         "usb tree  - show USB device tree\n"
 673         "usb info [dev] - show available USB devices\n"
 674         "usb storage  - show details of USB storage devices\n"
 675         "usb dev [dev] - show or set current USB storage device\n"
 676         "usb part [dev] - print partition table of one or all USB storage"
 677         " devices\n"
 678         "usb read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
 679         "    to memory address `addr'\n"
 680 );
 681
 682
 683 U_BOOT_CMD(
 684         usbboot,        3,      1,      do_usbboot,
 685         "usbboot - boot from USB device\n",
 686         "loadAddr dev:part\n"
 687 );
 688
 689 #else
 690 U_BOOT_CMD(
 691         usb,    5,      1,      do_usb,
 692         "usb     - USB sub-system\n",
 693         "reset - reset (rescan) USB controller\n"
 694         "usb  tree  - show USB device tree\n"
 695         "usb  info [dev] - show available USB devices\n"
 696 );
 697 #endif