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 <asm/unaligned.h>
  32 #include <part.h>
  33 #include <usb.h>
  34
  35 #ifdef CONFIG_USB_STORAGE
  36 static int usb_stor_curr_dev = -1; /* current device */
  37 #endif
  38 #ifdef CONFIG_USB_HOST_ETHER
  39 static int usb_ether_curr_dev = -1; /* current ethernet device */
  40 #endif
  41
  42 /* some display routines (info command) */
  43 static char *usb_get_class_desc(unsigned char dclass)
  44 {
  45         switch (dclass) {
  46         case USB_CLASS_PER_INTERFACE:
  47                 return "See Interface";
  48         case USB_CLASS_AUDIO:
  49                 return "Audio";
  50         case USB_CLASS_COMM:
  51                 return "Communication";
  52         case USB_CLASS_HID:
  53                 return "Human Interface";
  54         case USB_CLASS_PRINTER:
  55                 return "Printer";
  56         case USB_CLASS_MASS_STORAGE:
  57                 return "Mass Storage";
  58         case USB_CLASS_HUB:
  59                 return "Hub";
  60         case USB_CLASS_DATA:
  61                 return "CDC Data";
  62         case USB_CLASS_VENDOR_SPEC:
  63                 return "Vendor specific";
  64         default:
  65                 return "";
  66         }
  67 }
  68
  69 static void usb_display_class_sub(unsigned char dclass, unsigned char subclass,
  70                                   unsigned char proto)
  71 {
  72         switch (dclass) {
  73         case USB_CLASS_PER_INTERFACE:
  74                 printf("See Interface");
  75                 break;
  76         case USB_CLASS_HID:
  77                 printf("Human Interface, Subclass: ");
  78                 switch (subclass) {
  79                 case USB_SUB_HID_NONE:
  80                         printf("None");
  81                         break;
  82                 case USB_SUB_HID_BOOT:
  83                         printf("Boot ");
  84                         switch (proto) {
  85                         case USB_PROT_HID_NONE:
  86                                 printf("None");
  87                                 break;
  88                         case USB_PROT_HID_KEYBOARD:
  89                                 printf("Keyboard");
  90                                 break;
  91                         case USB_PROT_HID_MOUSE:
  92                                 printf("Mouse");
  93                                 break;
  94                         default:
  95                                 printf("reserved");
  96                                 break;
  97                         }
  98                         break;
  99                 default:
 100                         printf("reserved");
 101                         break;
 102                 }
 103                 break;
 104         case USB_CLASS_MASS_STORAGE:
 105                 printf("Mass Storage, ");
 106                 switch (subclass) {
 107                 case US_SC_RBC:
 108                         printf("RBC ");
 109                         break;
 110                 case US_SC_8020:
 111                         printf("SFF-8020i (ATAPI)");
 112                         break;
 113                 case US_SC_QIC:
 114                         printf("QIC-157 (Tape)");
 115                         break;
 116                 case US_SC_UFI:
 117                         printf("UFI");
 118                         break;
 119                 case US_SC_8070:
 120                         printf("SFF-8070");
 121                         break;
 122                 case US_SC_SCSI:
 123                         printf("Transp. SCSI");
 124                         break;
 125                 default:
 126                         printf("reserved");
 127                         break;
 128                 }
 129                 printf(", ");
 130                 switch (proto) {
 131                 case US_PR_CB:
 132                         printf("Command/Bulk");
 133                         break;
 134                 case US_PR_CBI:
 135                         printf("Command/Bulk/Int");
 136                         break;
 137                 case US_PR_BULK:
 138                         printf("Bulk only");
 139                         break;
 140                 default:
 141                         printf("reserved");
 142                         break;
 143                 }
 144                 break;
 145         default:
 146                 printf("%s", usb_get_class_desc(dclass));
 147                 break;
 148         }
 149 }
 150
 151 static void usb_display_string(struct usb_device *dev, int index)
 152 {
 153         ALLOC_CACHE_ALIGN_BUFFER(char, buffer, 256);
 154
 155         if (index != 0) {
 156                 if (usb_string(dev, index, &buffer[0], 256) > 0)
 157                         printf("String: \"%s\"", buffer);
 158         }
 159 }
 160
 161 static void usb_display_desc(struct usb_device *dev)
 162 {
 163         if (dev->descriptor.bDescriptorType == USB_DT_DEVICE) {
 164                 printf("%d: %s,  USB Revision %x.%x\n", dev->devnum,
 165                 usb_get_class_desc(dev->config.if_desc[0].desc.bInterfaceClass),
 166                                    (dev->descriptor.bcdUSB>>8) & 0xff,
 167                                    dev->descriptor.bcdUSB & 0xff);
 168
 169                 if (strlen(dev->mf) || strlen(dev->prod) ||
 170                     strlen(dev->serial))
 171                         printf(" - %s %s %s\n", dev->mf, dev->prod,
 172                                 dev->serial);
 173                 if (dev->descriptor.bDeviceClass) {
 174                         printf(" - Class: ");
 175                         usb_display_class_sub(dev->descriptor.bDeviceClass,
 176                                               dev->descriptor.bDeviceSubClass,
 177                                               dev->descriptor.bDeviceProtocol);
 178                         printf("\n");
 179                 } else {
 180                         printf(" - Class: (from Interface) %s\n",
 181                                usb_get_class_desc(
 182                                 dev->config.if_desc[0].desc.bInterfaceClass));
 183                 }
 184                 printf(" - PacketSize: %d  Configurations: %d\n",
 185                         dev->descriptor.bMaxPacketSize0,
 186                         dev->descriptor.bNumConfigurations);
 187                 printf(" - Vendor: 0x%04x  Product 0x%04x Version %d.%d\n",
 188                         dev->descriptor.idVendor, dev->descriptor.idProduct,
 189                         (dev->descriptor.bcdDevice>>8) & 0xff,
 190                         dev->descriptor.bcdDevice & 0xff);
 191         }
 192
 193 }
 194
 195 static void usb_display_conf_desc(struct usb_config_descriptor *config,
 196                                   struct usb_device *dev)
 197 {
 198         printf("   Configuration: %d\n", config->bConfigurationValue);
 199         printf("   - Interfaces: %d %s%s%dmA\n", config->bNumInterfaces,
 200                (config->bmAttributes & 0x40) ? "Self Powered " : "Bus Powered ",
 201                (config->bmAttributes & 0x20) ? "Remote Wakeup " : "",
 202                 config->bMaxPower*2);
 203         if (config->iConfiguration) {
 204                 printf("   - ");
 205                 usb_display_string(dev, config->iConfiguration);
 206                 printf("\n");
 207         }
 208 }
 209
 210 static void usb_display_if_desc(struct usb_interface_descriptor *ifdesc,
 211                                 struct usb_device *dev)
 212 {
 213         printf("     Interface: %d\n", ifdesc->bInterfaceNumber);
 214         printf("     - Alternate Setting %d, Endpoints: %d\n",
 215                 ifdesc->bAlternateSetting, ifdesc->bNumEndpoints);
 216         printf("     - Class ");
 217         usb_display_class_sub(ifdesc->bInterfaceClass,
 218                 ifdesc->bInterfaceSubClass, ifdesc->bInterfaceProtocol);
 219         printf("\n");
 220         if (ifdesc->iInterface) {
 221                 printf("     - ");
 222                 usb_display_string(dev, ifdesc->iInterface);
 223                 printf("\n");
 224         }
 225 }
 226
 227 static void usb_display_ep_desc(struct usb_endpoint_descriptor *epdesc)
 228 {
 229         printf("     - Endpoint %d %s ", epdesc->bEndpointAddress & 0xf,
 230                 (epdesc->bEndpointAddress & 0x80) ? "In" : "Out");
 231         switch ((epdesc->bmAttributes & 0x03)) {
 232         case 0:
 233                 printf("Control");
 234                 break;
 235         case 1:
 236                 printf("Isochronous");
 237                 break;
 238         case 2:
 239                 printf("Bulk");
 240                 break;
 241         case 3:
 242                 printf("Interrupt");
 243                 break;
 244         }
 245         printf(" MaxPacket %d", get_unaligned(&epdesc->wMaxPacketSize));
 246         if ((epdesc->bmAttributes & 0x03) == 0x3)
 247                 printf(" Interval %dms", epdesc->bInterval);
 248         printf("\n");
 249 }
 250
 251 /* main routine to diasplay the configs, interfaces and endpoints */
 252 static void usb_display_config(struct usb_device *dev)
 253 {
 254         struct usb_config *config;
 255         struct usb_interface *ifdesc;
 256         struct usb_endpoint_descriptor *epdesc;
 257         int i, ii;
 258
 259         config = &dev->config;
 260         usb_display_conf_desc(&config->desc, dev);
 261         for (i = 0; i < config->no_of_if; i++) {
 262                 ifdesc = &config->if_desc[i];
 263                 usb_display_if_desc(&ifdesc->desc, dev);
 264                 for (ii = 0; ii < ifdesc->no_of_ep; ii++) {
 265                         epdesc = &ifdesc->ep_desc[ii];
 266                         usb_display_ep_desc(epdesc);
 267                 }
 268         }
 269         printf("\n");
 270 }
 271
 272 static struct usb_device *usb_find_device(int devnum)
 273 {
 274         struct usb_device *dev;
 275         int d;
 276
 277         for (d = 0; d < USB_MAX_DEVICE; d++) {
 278                 dev = usb_get_dev_index(d);
 279                 if (dev == NULL)
 280                         return NULL;
 281                 if (dev->devnum == devnum)
 282                         return dev;
 283         }
 284
 285         return NULL;
 286 }
 287
 288 static inline char *portspeed(int speed)
 289 {
 290         char *speed_str;
 291
 292         switch (speed) {
 293         case USB_SPEED_SUPER:
 294                 speed_str = "5 Gb/s";
 295                 break;
 296         case USB_SPEED_HIGH:
 297                 speed_str = "480 Mb/s";
 298                 break;
 299         case USB_SPEED_LOW:
 300                 speed_str = "1.5 Mb/s";
 301                 break;
 302         default:
 303                 speed_str = "12 Mb/s";
 304                 break;
 305         }
 306
 307         return speed_str;
 308 }
 309
 310 /* shows the device tree recursively */
 311 static void usb_show_tree_graph(struct usb_device *dev, char *pre)
 312 {
 313         int i, index;
 314         int has_child, last_child;
 315
 316         index = strlen(pre);
 317         printf(" %s", pre);
 318         /* check if the device has connected children */
 319         has_child = 0;
 320         for (i = 0; i < dev->maxchild; i++) {
 321                 if (dev->children[i] != NULL)
 322                         has_child = 1;
 323         }
 324         /* check if we are the last one */
 325         last_child = 1;
 326         if (dev->parent != NULL) {
 327                 for (i = 0; i < dev->parent->maxchild; i++) {
 328                         /* search for children */
 329                         if (dev->parent->children[i] == dev) {
 330                                 /* found our pointer, see if we have a
 331                                  * little sister
 332                                  */
 333                                 while (i++ < dev->parent->maxchild) {
 334                                         if (dev->parent->children[i] != NULL) {
 335                                                 /* found a sister */
 336                                                 last_child = 0;
 337                                                 break;
 338                                         } /* if */
 339                                 } /* while */
 340                         } /* device found */
 341                 } /* for all children of the parent */
 342                 printf("\b+-");
 343                 /* correct last child */
 344                 if (last_child)
 345                         pre[index-1] = ' ';
 346         } /* if not root hub */
 347         else
 348                 printf(" ");
 349         printf("%d ", dev->devnum);
 350         pre[index++] = ' ';
 351         pre[index++] = has_child ? '|' : ' ';
 352         pre[index] = 0;
 353         printf(" %s (%s, %dmA)\n", usb_get_class_desc(
 354                                         dev->config.if_desc[0].desc.bInterfaceClass),
 355                                         portspeed(dev->speed),
 356                                         dev->config.desc.bMaxPower * 2);
 357         if (strlen(dev->mf) || strlen(dev->prod) || strlen(dev->serial))
 358                 printf(" %s  %s %s %s\n", pre, dev->mf, dev->prod, dev->serial);
 359         printf(" %s\n", pre);
 360         if (dev->maxchild > 0) {
 361                 for (i = 0; i < dev->maxchild; i++) {
 362                         if (dev->children[i] != NULL) {
 363                                 usb_show_tree_graph(dev->children[i], pre);
 364                                 pre[index] = 0;
 365                         }
 366                 }
 367         }
 368 }
 369
 370 /* main routine for the tree command */
 371 static void usb_show_tree(struct usb_device *dev)
 372 {
 373         char preamble[32];
 374
 375         memset(preamble, 0, 32);
 376         usb_show_tree_graph(dev, &preamble[0]);
 377 }
 378
 379 static int usb_test(struct usb_device *dev, int port, char* arg)
 380 {
 381         int mode;
 382
 383         if (port > dev->maxchild) {
 384                 printf("Device is no hub or does not have %d ports.\n", port);
 385                 return 1;
 386         }
 387
 388         switch (arg[0]) {
 389         case 'J':
 390         case 'j':
 391                 printf("Setting Test_J mode");
 392                 mode = USB_TEST_MODE_J;
 393                 break;
 394         case 'K':
 395         case 'k':
 396                 printf("Setting Test_K mode");
 397                 mode = USB_TEST_MODE_K;
 398                 break;
 399         case 'S':
 400         case 's':
 401                 printf("Setting Test_SE0_NAK mode");
 402                 mode = USB_TEST_MODE_SE0_NAK;
 403                 break;
 404         case 'P':
 405         case 'p':
 406                 printf("Setting Test_Packet mode");
 407                 mode = USB_TEST_MODE_PACKET;
 408                 break;
 409         case 'F':
 410         case 'f':
 411                 printf("Setting Test_Force_Enable mode");
 412                 mode = USB_TEST_MODE_FORCE_ENABLE;
 413                 break;
 414         default:
 415                 printf("Unrecognized test mode: %s\nAvailable modes: "
 416                        "J, K, S[E0_NAK], P[acket], F[orce_Enable]\n", arg);
 417                 return 1;
 418         }
 419
 420         if (port)
 421                 printf(" on downstream facing port %d...\n", port);
 422         else
 423                 printf(" on upstream facing port...\n");
 424
 425         if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_FEATURE,
 426                             port ? USB_RT_PORT : USB_RECIP_DEVICE,
 427                             port ? USB_PORT_FEAT_TEST : USB_FEAT_TEST,
 428                             (mode << 8) | port,
 429                             NULL, 0, USB_CNTL_TIMEOUT) == -1) {
 430                 printf("Error during SET_FEATURE.\n");
 431                 return 1;
 432         } else {
 433                 printf("Test mode successfully set. Use 'usb start' "
 434                        "to return to normal operation.\n");
 435                 return 0;
 436         }
 437 }
 438
 439
 440 /******************************************************************************
 441  * usb boot command intepreter. Derived from diskboot
 442  */
 443 #ifdef CONFIG_USB_STORAGE
 444 static int do_usbboot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 445 {
 446         return common_diskboot(cmdtp, "usb", argc, argv);
 447 }
 448 #endif /* CONFIG_USB_STORAGE */
 449
 450
 451 /******************************************************************************
 452  * usb command intepreter
 453  */
 454 static int do_usb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 455 {
 456
 457         int i;
 458         struct usb_device *dev = NULL;
 459         extern char usb_started;
 460 #ifdef CONFIG_USB_STORAGE
 461         block_dev_desc_t *stor_dev;
 462 #endif
 463
 464         if (argc < 2)
 465                 return CMD_RET_USAGE;
 466
 467         if ((strncmp(argv[1], "reset", 5) == 0) ||
 468                  (strncmp(argv[1], "start", 5) == 0)) {
 469                 bootstage_mark_name(BOOTSTAGE_ID_USB_START, "usb_start");
 470                 usb_stop();
 471                 printf("(Re)start USB...\n");
 472                 if (usb_init() >= 0) {
 473 #ifdef CONFIG_USB_STORAGE
 474                         /* try to recognize storage devices immediately */
 475                         usb_stor_curr_dev = usb_stor_scan(1);
 476 #endif
 477 #ifdef CONFIG_USB_HOST_ETHER
 478                         /* try to recognize ethernet devices immediately */
 479                         usb_ether_curr_dev = usb_host_eth_scan(1);
 480 #endif
 481 #ifdef CONFIG_USB_KEYBOARD
 482                         drv_usb_kbd_init();
 483 #endif
 484                 }
 485                 return 0;
 486         }
 487         if (strncmp(argv[1], "stop", 4) == 0) {
 488 #ifdef CONFIG_USB_KEYBOARD
 489                 if (argc == 2) {
 490                         if (usb_kbd_deregister() != 0) {
 491                                 printf("USB not stopped: usbkbd still"
 492                                         " using USB\n");
 493                                 return 1;
 494                         }
 495                 } else {
 496                         /* forced stop, switch console in to serial */
 497                         console_assign(stdin, "serial");
 498                         usb_kbd_deregister();
 499                 }
 500 #endif
 501                 printf("stopping USB..\n");
 502                 usb_stop();
 503                 return 0;
 504         }
 505         if (!usb_started) {
 506                 printf("USB is stopped. Please issue 'usb start' first.\n");
 507                 return 1;
 508         }
 509         if (strncmp(argv[1], "tree", 4) == 0) {
 510                 puts("USB device tree:\n");
 511                 for (i = 0; i < USB_MAX_DEVICE; i++) {
 512                         dev = usb_get_dev_index(i);
 513                         if (dev == NULL)
 514                                 break;
 515                         if (dev->parent == NULL)
 516                                 usb_show_tree(dev);
 517                 }
 518                 return 0;
 519         }
 520         if (strncmp(argv[1], "inf", 3) == 0) {
 521                 int d;
 522                 if (argc == 2) {
 523                         for (d = 0; d < USB_MAX_DEVICE; d++) {
 524                                 dev = usb_get_dev_index(d);
 525                                 if (dev == NULL)
 526                                         break;
 527                                 usb_display_desc(dev);
 528                                 usb_display_config(dev);
 529                         }
 530                         return 0;
 531                 } else {
 532                         i = simple_strtoul(argv[2], NULL, 10);
 533                         printf("config for device %d\n", i);
 534                         dev = usb_find_device(i);
 535                         if (dev == NULL) {
 536                                 printf("*** No device available ***\n");
 537                                 return 0;
 538                         } else {
 539                                 usb_display_desc(dev);
 540                                 usb_display_config(dev);
 541                         }
 542                 }
 543                 return 0;
 544         }
 545         if (strncmp(argv[1], "test", 4) == 0) {
 546                 if (argc < 5)
 547                         return CMD_RET_USAGE;
 548                 i = simple_strtoul(argv[2], NULL, 10);
 549                 dev = usb_find_device(i);
 550                 if (dev == NULL) {
 551                         printf("Device %d does not exist.\n", i);
 552                         return 1;
 553                 }
 554                 i = simple_strtoul(argv[3], NULL, 10);
 555                 return usb_test(dev, i, argv[4]);
 556         }
 557 #ifdef CONFIG_USB_STORAGE
 558         if (strncmp(argv[1], "stor", 4) == 0)
 559                 return usb_stor_info();
 560
 561         if (strncmp(argv[1], "part", 4) == 0) {
 562                 int devno, ok = 0;
 563                 if (argc == 2) {
 564                         for (devno = 0; ; ++devno) {
 565                                 stor_dev = usb_stor_get_dev(devno);
 566                                 if (stor_dev == NULL)
 567                                         break;
 568                                 if (stor_dev->type != DEV_TYPE_UNKNOWN) {
 569                                         ok++;
 570                                         if (devno)
 571                                                 printf("\n");
 572                                         debug("print_part of %x\n", devno);
 573                                         print_part(stor_dev);
 574                                 }
 575                         }
 576                 } else {
 577                         devno = simple_strtoul(argv[2], NULL, 16);
 578                         stor_dev = usb_stor_get_dev(devno);
 579                         if (stor_dev != NULL &&
 580                             stor_dev->type != DEV_TYPE_UNKNOWN) {
 581                                 ok++;
 582                                 debug("print_part of %x\n", devno);
 583                                 print_part(stor_dev);
 584                         }
 585                 }
 586                 if (!ok) {
 587                         printf("\nno USB devices available\n");
 588                         return 1;
 589                 }
 590                 return 0;
 591         }
 592         if (strcmp(argv[1], "read") == 0) {
 593                 if (usb_stor_curr_dev < 0) {
 594                         printf("no current device selected\n");
 595                         return 1;
 596                 }
 597                 if (argc == 5) {
 598                         unsigned long addr = simple_strtoul(argv[2], NULL, 16);
 599                         unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
 600                         unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
 601                         unsigned long n;
 602                         printf("\nUSB read: device %d block # %ld, count %ld"
 603                                 " ... ", usb_stor_curr_dev, blk, cnt);
 604                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
 605                         n = stor_dev->block_read(usb_stor_curr_dev, blk, cnt,
 606                                                  (ulong *)addr);
 607                         printf("%ld blocks read: %s\n", n,
 608                                 (n == cnt) ? "OK" : "ERROR");
 609                         if (n == cnt)
 610                                 return 0;
 611                         return 1;
 612                 }
 613         }
 614         if (strcmp(argv[1], "write") == 0) {
 615                 if (usb_stor_curr_dev < 0) {
 616                         printf("no current device selected\n");
 617                         return 1;
 618                 }
 619                 if (argc == 5) {
 620                         unsigned long addr = simple_strtoul(argv[2], NULL, 16);
 621                         unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
 622                         unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
 623                         unsigned long n;
 624                         printf("\nUSB write: device %d block # %ld, count %ld"
 625                                 " ... ", usb_stor_curr_dev, blk, cnt);
 626                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
 627                         n = stor_dev->block_write(usb_stor_curr_dev, blk, cnt,
 628                                                 (ulong *)addr);
 629                         printf("%ld blocks write: %s\n", n,
 630                                 (n == cnt) ? "OK" : "ERROR");
 631                         if (n == cnt)
 632                                 return 0;
 633                         return 1;
 634                 }
 635         }
 636         if (strncmp(argv[1], "dev", 3) == 0) {
 637                 if (argc == 3) {
 638                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
 639                         printf("\nUSB device %d: ", dev);
 640                         stor_dev = usb_stor_get_dev(dev);
 641                         if (stor_dev == NULL) {
 642                                 printf("unknown device\n");
 643                                 return 1;
 644                         }
 645                         printf("\n    Device %d: ", dev);
 646                         dev_print(stor_dev);
 647                         if (stor_dev->type == DEV_TYPE_UNKNOWN)
 648                                 return 1;
 649                         usb_stor_curr_dev = dev;
 650                         printf("... is now current device\n");
 651                         return 0;
 652                 } else {
 653                         printf("\nUSB device %d: ", usb_stor_curr_dev);
 654                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
 655                         dev_print(stor_dev);
 656                         if (stor_dev->type == DEV_TYPE_UNKNOWN)
 657                                 return 1;
 658                         return 0;
 659                 }
 660                 return 0;
 661         }
 662 #endif /* CONFIG_USB_STORAGE */
 663         return CMD_RET_USAGE;
 664 }
 665
 666 U_BOOT_CMD(
 667         usb,    5,      1,      do_usb,
 668         "USB sub-system",
 669         "start - start (scan) USB controller\n"
 670         "usb 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 test [dev] [port] [mode] - set USB 2.0 test mode\n"
 675         "    (specify port 0 to indicate the device's upstream port)\n"
 676         "    Available modes: J, K, S[E0_NAK], P[acket], F[orce_Enable]\n"
 677 #ifdef CONFIG_USB_STORAGE
 678         "usb storage - show details of USB storage devices\n"
 679         "usb dev [dev] - show or set current USB storage device\n"
 680         "usb part [dev] - print partition table of one or all USB storage"
 681         "    devices\n"
 682         "usb read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
 683         "    to memory address `addr'\n"
 684         "usb write addr blk# cnt - write `cnt' blocks starting at block `blk#'\n"
 685         "    from memory address `addr'"
 686 #endif /* CONFIG_USB_STORAGE */
 687 );
 688
 689
 690 #ifdef CONFIG_USB_STORAGE
 691 U_BOOT_CMD(
 692         usbboot,        3,      1,      do_usbboot,
 693         "boot from USB device",
 694         "loadAddr dev:part"
 695 );
 696 #endif /* CONFIG_USB_STORAGE */