cmd/usb.c

   1 /*
   2  * (C) Copyright 2001
   3  * Denis Peter, MPL AG Switzerland
   4  *
   5  * Adapted for U-Boot driver model
   6  * (C) Copyright 2015 Google, Inc
   7  *
   8  * Most of this source has been derived from the Linux USB
   9  * project.
  10  *
  11  * SPDX-License-Identifier:     GPL-2.0+
  12  */
  13
  14 #include <common.h>
  15 #include <command.h>
  16 #include <console.h>
  17 #include <dm.h>
  18 #include <dm/uclass-internal.h>
  19 #include <memalign.h>
  20 #include <asm/byteorder.h>
  21 #include <asm/unaligned.h>
  22 #include <part.h>
  23 #include <usb.h>
  24
  25 #ifdef CONFIG_USB_STORAGE
  26 static int usb_stor_curr_dev = -1; /* current device */
  27 #endif
  28 #if defined(CONFIG_USB_HOST_ETHER) && !defined(CONFIG_DM_ETH)
  29 static int __maybe_unused usb_ether_curr_dev = -1; /* current ethernet device */
  30 #endif
  31
  32 /* some display routines (info command) */
  33 static char *usb_get_class_desc(unsigned char dclass)
  34 {
  35         switch (dclass) {
  36         case USB_CLASS_PER_INTERFACE:
  37                 return "See Interface";
  38         case USB_CLASS_AUDIO:
  39                 return "Audio";
  40         case USB_CLASS_COMM:
  41                 return "Communication";
  42         case USB_CLASS_HID:
  43                 return "Human Interface";
  44         case USB_CLASS_PRINTER:
  45                 return "Printer";
  46         case USB_CLASS_MASS_STORAGE:
  47                 return "Mass Storage";
  48         case USB_CLASS_HUB:
  49                 return "Hub";
  50         case USB_CLASS_DATA:
  51                 return "CDC Data";
  52         case USB_CLASS_VENDOR_SPEC:
  53                 return "Vendor specific";
  54         default:
  55                 return "";
  56         }
  57 }
  58
  59 static void usb_display_class_sub(unsigned char dclass, unsigned char subclass,
  60                                   unsigned char proto)
  61 {
  62         switch (dclass) {
  63         case USB_CLASS_PER_INTERFACE:
  64                 printf("See Interface");
  65                 break;
  66         case USB_CLASS_HID:
  67                 printf("Human Interface, Subclass: ");
  68                 switch (subclass) {
  69                 case USB_SUB_HID_NONE:
  70                         printf("None");
  71                         break;
  72                 case USB_SUB_HID_BOOT:
  73                         printf("Boot ");
  74                         switch (proto) {
  75                         case USB_PROT_HID_NONE:
  76                                 printf("None");
  77                                 break;
  78                         case USB_PROT_HID_KEYBOARD:
  79                                 printf("Keyboard");
  80                                 break;
  81                         case USB_PROT_HID_MOUSE:
  82                                 printf("Mouse");
  83                                 break;
  84                         default:
  85                                 printf("reserved");
  86                                 break;
  87                         }
  88                         break;
  89                 default:
  90                         printf("reserved");
  91                         break;
  92                 }
  93                 break;
  94         case USB_CLASS_MASS_STORAGE:
  95                 printf("Mass Storage, ");
  96                 switch (subclass) {
  97                 case US_SC_RBC:
  98                         printf("RBC ");
  99                         break;
 100                 case US_SC_8020:
 101                         printf("SFF-8020i (ATAPI)");
 102                         break;
 103                 case US_SC_QIC:
 104                         printf("QIC-157 (Tape)");
 105                         break;
 106                 case US_SC_UFI:
 107                         printf("UFI");
 108                         break;
 109                 case US_SC_8070:
 110                         printf("SFF-8070");
 111                         break;
 112                 case US_SC_SCSI:
 113                         printf("Transp. SCSI");
 114                         break;
 115                 default:
 116                         printf("reserved");
 117                         break;
 118                 }
 119                 printf(", ");
 120                 switch (proto) {
 121                 case US_PR_CB:
 122                         printf("Command/Bulk");
 123                         break;
 124                 case US_PR_CBI:
 125                         printf("Command/Bulk/Int");
 126                         break;
 127                 case US_PR_BULK:
 128                         printf("Bulk only");
 129                         break;
 130                 default:
 131                         printf("reserved");
 132                         break;
 133                 }
 134                 break;
 135         default:
 136                 printf("%s", usb_get_class_desc(dclass));
 137                 break;
 138         }
 139 }
 140
 141 static void usb_display_string(struct usb_device *dev, int index)
 142 {
 143         ALLOC_CACHE_ALIGN_BUFFER(char, buffer, 256);
 144
 145         if (index != 0) {
 146                 if (usb_string(dev, index, &buffer[0], 256) > 0)
 147                         printf("String: \"%s\"", buffer);
 148         }
 149 }
 150
 151 static void usb_display_desc(struct usb_device *dev)
 152 {
 153         if (dev->descriptor.bDescriptorType == USB_DT_DEVICE) {
 154                 printf("%d: %s,  USB Revision %x.%x\n", dev->devnum,
 155                 usb_get_class_desc(dev->config.if_desc[0].desc.bInterfaceClass),
 156                                    (dev->descriptor.bcdUSB>>8) & 0xff,
 157                                    dev->descriptor.bcdUSB & 0xff);
 158
 159                 if (strlen(dev->mf) || strlen(dev->prod) ||
 160                     strlen(dev->serial))
 161                         printf(" - %s %s %s\n", dev->mf, dev->prod,
 162                                 dev->serial);
 163                 if (dev->descriptor.bDeviceClass) {
 164                         printf(" - Class: ");
 165                         usb_display_class_sub(dev->descriptor.bDeviceClass,
 166                                               dev->descriptor.bDeviceSubClass,
 167                                               dev->descriptor.bDeviceProtocol);
 168                         printf("\n");
 169                 } else {
 170                         printf(" - Class: (from Interface) %s\n",
 171                                usb_get_class_desc(
 172                                 dev->config.if_desc[0].desc.bInterfaceClass));
 173                 }
 174                 printf(" - PacketSize: %d  Configurations: %d\n",
 175                         dev->descriptor.bMaxPacketSize0,
 176                         dev->descriptor.bNumConfigurations);
 177                 printf(" - Vendor: 0x%04x  Product 0x%04x Version %d.%d\n",
 178                         dev->descriptor.idVendor, dev->descriptor.idProduct,
 179                         (dev->descriptor.bcdDevice>>8) & 0xff,
 180                         dev->descriptor.bcdDevice & 0xff);
 181         }
 182
 183 }
 184
 185 static void usb_display_conf_desc(struct usb_config_descriptor *config,
 186                                   struct usb_device *dev)
 187 {
 188         printf("   Configuration: %d\n", config->bConfigurationValue);
 189         printf("   - Interfaces: %d %s%s%dmA\n", config->bNumInterfaces,
 190                (config->bmAttributes & 0x40) ? "Self Powered " : "Bus Powered ",
 191                (config->bmAttributes & 0x20) ? "Remote Wakeup " : "",
 192                 config->bMaxPower*2);
 193         if (config->iConfiguration) {
 194                 printf("   - ");
 195                 usb_display_string(dev, config->iConfiguration);
 196                 printf("\n");
 197         }
 198 }
 199
 200 static void usb_display_if_desc(struct usb_interface_descriptor *ifdesc,
 201                                 struct usb_device *dev)
 202 {
 203         printf("     Interface: %d\n", ifdesc->bInterfaceNumber);
 204         printf("     - Alternate Setting %d, Endpoints: %d\n",
 205                 ifdesc->bAlternateSetting, ifdesc->bNumEndpoints);
 206         printf("     - Class ");
 207         usb_display_class_sub(ifdesc->bInterfaceClass,
 208                 ifdesc->bInterfaceSubClass, ifdesc->bInterfaceProtocol);
 209         printf("\n");
 210         if (ifdesc->iInterface) {
 211                 printf("     - ");
 212                 usb_display_string(dev, ifdesc->iInterface);
 213                 printf("\n");
 214         }
 215 }
 216
 217 static void usb_display_ep_desc(struct usb_endpoint_descriptor *epdesc)
 218 {
 219         printf("     - Endpoint %d %s ", epdesc->bEndpointAddress & 0xf,
 220                 (epdesc->bEndpointAddress & 0x80) ? "In" : "Out");
 221         switch ((epdesc->bmAttributes & 0x03)) {
 222         case 0:
 223                 printf("Control");
 224                 break;
 225         case 1:
 226                 printf("Isochronous");
 227                 break;
 228         case 2:
 229                 printf("Bulk");
 230                 break;
 231         case 3:
 232                 printf("Interrupt");
 233                 break;
 234         }
 235         printf(" MaxPacket %d", get_unaligned(&epdesc->wMaxPacketSize));
 236         if ((epdesc->bmAttributes & 0x03) == 0x3)
 237                 printf(" Interval %dms", epdesc->bInterval);
 238         printf("\n");
 239 }
 240
 241 /* main routine to diasplay the configs, interfaces and endpoints */
 242 static void usb_display_config(struct usb_device *dev)
 243 {
 244         struct usb_config *config;
 245         struct usb_interface *ifdesc;
 246         struct usb_endpoint_descriptor *epdesc;
 247         int i, ii;
 248
 249         config = &dev->config;
 250         usb_display_conf_desc(&config->desc, dev);
 251         for (i = 0; i < config->no_of_if; i++) {
 252                 ifdesc = &config->if_desc[i];
 253                 usb_display_if_desc(&ifdesc->desc, dev);
 254                 for (ii = 0; ii < ifdesc->no_of_ep; ii++) {
 255                         epdesc = &ifdesc->ep_desc[ii];
 256                         usb_display_ep_desc(epdesc);
 257                 }
 258         }
 259         printf("\n");
 260 }
 261
 262 /*
 263  * With driver model this isn't right since we can have multiple controllers
 264  * and the device numbering starts at 1 on each bus.
 265  * TODO(sjg@chromium.org): Add a way to specify the controller/bus.
 266  */
 267 static struct usb_device *usb_find_device(int devnum)
 268 {
 269 #ifdef CONFIG_DM_USB
 270         struct usb_device *udev;
 271         struct udevice *hub;
 272         struct uclass *uc;
 273         int ret;
 274
 275         /* Device addresses start at 1 */
 276         devnum++;
 277         ret = uclass_get(UCLASS_USB_HUB, &uc);
 278         if (ret)
 279                 return NULL;
 280
 281         uclass_foreach_dev(hub, uc) {
 282                 struct udevice *dev;
 283
 284                 if (!device_active(hub))
 285                         continue;
 286                 udev = dev_get_parent_priv(hub);
 287                 if (udev->devnum == devnum)
 288                         return udev;
 289
 290                 for (device_find_first_child(hub, &dev);
 291                      dev;
 292                      device_find_next_child(&dev)) {
 293                         if (!device_active(hub))
 294                                 continue;
 295
 296                         udev = dev_get_parent_priv(dev);
 297                         if (udev->devnum == devnum)
 298                                 return udev;
 299                 }
 300         }
 301 #else
 302         struct usb_device *udev;
 303         int d;
 304
 305         for (d = 0; d < USB_MAX_DEVICE; d++) {
 306                 udev = usb_get_dev_index(d);
 307                 if (udev == NULL)
 308                         return NULL;
 309                 if (udev->devnum == devnum)
 310                         return udev;
 311         }
 312 #endif
 313
 314         return NULL;
 315 }
 316
 317 static inline char *portspeed(int speed)
 318 {
 319         char *speed_str;
 320
 321         switch (speed) {
 322         case USB_SPEED_SUPER:
 323                 speed_str = "5 Gb/s";
 324                 break;
 325         case USB_SPEED_HIGH:
 326                 speed_str = "480 Mb/s";
 327                 break;
 328         case USB_SPEED_LOW:
 329                 speed_str = "1.5 Mb/s";
 330                 break;
 331         default:
 332                 speed_str = "12 Mb/s";
 333                 break;
 334         }
 335
 336         return speed_str;
 337 }
 338
 339 /* shows the device tree recursively */
 340 static void usb_show_tree_graph(struct usb_device *dev, char *pre)
 341 {
 342         int index;
 343         int has_child, last_child;
 344
 345         index = strlen(pre);
 346         printf(" %s", pre);
 347 #ifdef CONFIG_DM_USB
 348         has_child = device_has_active_children(dev->dev);
 349 #else
 350         /* check if the device has connected children */
 351         int i;
 352
 353         has_child = 0;
 354         for (i = 0; i < dev->maxchild; i++) {
 355                 if (dev->children[i] != NULL)
 356                         has_child = 1;
 357         }
 358 #endif
 359         /* check if we are the last one */
 360 #ifdef CONFIG_DM_USB
 361         /* Not the root of the usb tree? */
 362         if (device_get_uclass_id(dev->dev->parent) != UCLASS_USB) {
 363                 last_child = device_is_last_sibling(dev->dev);
 364 #else
 365         if (dev->parent != NULL) { /* not root? */
 366                 last_child = 1;
 367                 for (i = 0; i < dev->parent->maxchild; i++) {
 368                         /* search for children */
 369                         if (dev->parent->children[i] == dev) {
 370                                 /* found our pointer, see if we have a
 371                                  * little sister
 372                                  */
 373                                 while (i++ < dev->parent->maxchild) {
 374                                         if (dev->parent->children[i] != NULL) {
 375                                                 /* found a sister */
 376                                                 last_child = 0;
 377                                                 break;
 378                                         } /* if */
 379                                 } /* while */
 380                         } /* device found */
 381                 } /* for all children of the parent */
 382 #endif
 383                 printf("\b+-");
 384                 /* correct last child */
 385                 if (last_child && index)
 386                         pre[index-1] = ' ';
 387         } /* if not root hub */
 388         else
 389                 printf(" ");
 390         printf("%d ", dev->devnum);
 391         pre[index++] = ' ';
 392         pre[index++] = has_child ? '|' : ' ';
 393         pre[index] = 0;
 394         printf(" %s (%s, %dmA)\n", usb_get_class_desc(
 395                                         dev->config.if_desc[0].desc.bInterfaceClass),
 396                                         portspeed(dev->speed),
 397                                         dev->config.desc.bMaxPower * 2);
 398         if (strlen(dev->mf) || strlen(dev->prod) || strlen(dev->serial))
 399                 printf(" %s  %s %s %s\n", pre, dev->mf, dev->prod, dev->serial);
 400         printf(" %s\n", pre);
 401 #ifdef CONFIG_DM_USB
 402         struct udevice *child;
 403
 404         for (device_find_first_child(dev->dev, &child);
 405              child;
 406              device_find_next_child(&child)) {
 407                 struct usb_device *udev;
 408
 409                 if (!device_active(child))
 410                         continue;
 411
 412                 udev = dev_get_parent_priv(child);
 413
 414                 /* Ignore emulators, we only want real devices */
 415                 if (device_get_uclass_id(child) != UCLASS_USB_EMUL) {
 416                         usb_show_tree_graph(udev, pre);
 417                         pre[index] = 0;
 418                 }
 419         }
 420 #else
 421         if (dev->maxchild > 0) {
 422                 for (i = 0; i < dev->maxchild; i++) {
 423                         if (dev->children[i] != NULL) {
 424                                 usb_show_tree_graph(dev->children[i], pre);
 425                                 pre[index] = 0;
 426                         }
 427                 }
 428         }
 429 #endif
 430 }
 431
 432 /* main routine for the tree command */
 433 static void usb_show_subtree(struct usb_device *dev)
 434 {
 435         char preamble[32];
 436
 437         memset(preamble, '\0', sizeof(preamble));
 438         usb_show_tree_graph(dev, &preamble[0]);
 439 }
 440
 441 void usb_show_tree(void)
 442 {
 443 #ifdef CONFIG_DM_USB
 444         struct udevice *bus;
 445
 446         for (uclass_find_first_device(UCLASS_USB, &bus);
 447                 bus;
 448                 uclass_find_next_device(&bus)) {
 449                 struct usb_device *udev;
 450                 struct udevice *dev;
 451
 452                 if (!device_active(bus))
 453                         continue;
 454
 455                 device_find_first_child(bus, &dev);
 456                 if (dev && device_active(dev)) {
 457                         udev = dev_get_parent_priv(dev);
 458                         usb_show_subtree(udev);
 459                 }
 460         }
 461 #else
 462         struct usb_device *udev;
 463         int i;
 464
 465         for (i = 0; i < USB_MAX_DEVICE; i++) {
 466                 udev = usb_get_dev_index(i);
 467                 if (udev == NULL)
 468                         break;
 469                 if (udev->parent == NULL)
 470                         usb_show_subtree(udev);
 471         }
 472 #endif
 473 }
 474
 475 static int usb_test(struct usb_device *dev, int port, char* arg)
 476 {
 477         int mode;
 478
 479         if (port > dev->maxchild) {
 480                 printf("Device is no hub or does not have %d ports.\n", port);
 481                 return 1;
 482         }
 483
 484         switch (arg[0]) {
 485         case 'J':
 486         case 'j':
 487                 printf("Setting Test_J mode");
 488                 mode = USB_TEST_MODE_J;
 489                 break;
 490         case 'K':
 491         case 'k':
 492                 printf("Setting Test_K mode");
 493                 mode = USB_TEST_MODE_K;
 494                 break;
 495         case 'S':
 496         case 's':
 497                 printf("Setting Test_SE0_NAK mode");
 498                 mode = USB_TEST_MODE_SE0_NAK;
 499                 break;
 500         case 'P':
 501         case 'p':
 502                 printf("Setting Test_Packet mode");
 503                 mode = USB_TEST_MODE_PACKET;
 504                 break;
 505         case 'F':
 506         case 'f':
 507                 printf("Setting Test_Force_Enable mode");
 508                 mode = USB_TEST_MODE_FORCE_ENABLE;
 509                 break;
 510         default:
 511                 printf("Unrecognized test mode: %s\nAvailable modes: "
 512                        "J, K, S[E0_NAK], P[acket], F[orce_Enable]\n", arg);
 513                 return 1;
 514         }
 515
 516         if (port)
 517                 printf(" on downstream facing port %d...\n", port);
 518         else
 519                 printf(" on upstream facing port...\n");
 520
 521         if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_FEATURE,
 522                             port ? USB_RT_PORT : USB_RECIP_DEVICE,
 523                             port ? USB_PORT_FEAT_TEST : USB_FEAT_TEST,
 524                             (mode << 8) | port,
 525                             NULL, 0, USB_CNTL_TIMEOUT) == -1) {
 526                 printf("Error during SET_FEATURE.\n");
 527                 return 1;
 528         } else {
 529                 printf("Test mode successfully set. Use 'usb start' "
 530                        "to return to normal operation.\n");
 531                 return 0;
 532         }
 533 }
 534
 535
 536 /******************************************************************************
 537  * usb boot command intepreter. Derived from diskboot
 538  */
 539 #ifdef CONFIG_USB_STORAGE
 540 static int do_usbboot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 541 {
 542         return common_diskboot(cmdtp, "usb", argc, argv);
 543 }
 544 #endif /* CONFIG_USB_STORAGE */
 545
 546 static int do_usb_stop_keyboard(int force)
 547 {
 548 #if !defined CONFIG_DM_USB && defined CONFIG_USB_KEYBOARD
 549         if (usb_kbd_deregister(force) != 0) {
 550                 printf("USB not stopped: usbkbd still using USB\n");
 551                 return 1;
 552         }
 553 #endif
 554         return 0;
 555 }
 556
 557 static void do_usb_start(void)
 558 {
 559         bootstage_mark_name(BOOTSTAGE_ID_USB_START, "usb_start");
 560
 561         if (usb_init() < 0)
 562                 return;
 563
 564         /* Driver model will probe the devices as they are found */
 565 #ifndef CONFIG_DM_USB
 566 # ifdef CONFIG_USB_STORAGE
 567         /* try to recognize storage devices immediately */
 568         usb_stor_curr_dev = usb_stor_scan(1);
 569 # endif
 570 # ifdef CONFIG_USB_KEYBOARD
 571         drv_usb_kbd_init();
 572 # endif
 573 #endif /* !CONFIG_DM_USB */
 574 #ifdef CONFIG_USB_HOST_ETHER
 575 # ifdef CONFIG_DM_ETH
 576 #  ifndef CONFIG_DM_USB
 577 #   error "You must use CONFIG_DM_USB if you want to use CONFIG_USB_HOST_ETHER with CONFIG_DM_ETH"
 578 #  endif
 579 # else
 580         /* try to recognize ethernet devices immediately */
 581         usb_ether_curr_dev = usb_host_eth_scan(1);
 582 # endif
 583 #endif
 584 }
 585
 586 #ifdef CONFIG_DM_USB
 587 static void show_info(struct udevice *dev)
 588 {
 589         struct udevice *child;
 590         struct usb_device *udev;
 591
 592         udev = dev_get_parent_priv(dev);
 593         usb_display_desc(udev);
 594         usb_display_config(udev);
 595         for (device_find_first_child(dev, &child);
 596              child;
 597              device_find_next_child(&child)) {
 598                 if (device_active(child))
 599                         show_info(child);
 600         }
 601 }
 602
 603 static int usb_device_info(void)
 604 {
 605         struct udevice *bus;
 606
 607         for (uclass_first_device(UCLASS_USB, &bus);
 608              bus;
 609              uclass_next_device(&bus)) {
 610                 struct udevice *hub;
 611
 612                 device_find_first_child(bus, &hub);
 613                 if (device_get_uclass_id(hub) == UCLASS_USB_HUB &&
 614                     device_active(hub)) {
 615                         show_info(hub);
 616                 }
 617         }
 618
 619         return 0;
 620 }
 621 #endif
 622
 623 /******************************************************************************
 624  * usb command intepreter
 625  */
 626 static int do_usb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 627 {
 628         struct usb_device *udev = NULL;
 629         int i;
 630         extern char usb_started;
 631 #ifdef CONFIG_USB_STORAGE
 632         struct blk_desc *stor_dev;
 633 #endif
 634
 635         if (argc < 2)
 636                 return CMD_RET_USAGE;
 637
 638         if (strncmp(argv[1], "start", 5) == 0) {
 639                 if (usb_started)
 640                         return 0; /* Already started */
 641                 printf("starting USB...\n");
 642                 do_usb_start();
 643                 return 0;
 644         }
 645
 646         if (strncmp(argv[1], "reset", 5) == 0) {
 647                 printf("resetting USB...\n");
 648                 if (do_usb_stop_keyboard(1) != 0)
 649                         return 1;
 650                 usb_stop();
 651                 do_usb_start();
 652                 return 0;
 653         }
 654         if (strncmp(argv[1], "stop", 4) == 0) {
 655                 if (argc != 2)
 656                         console_assign(stdin, "serial");
 657                 if (do_usb_stop_keyboard(0) != 0)
 658                         return 1;
 659                 printf("stopping USB..\n");
 660                 usb_stop();
 661                 return 0;
 662         }
 663         if (!usb_started) {
 664                 printf("USB is stopped. Please issue 'usb start' first.\n");
 665                 return 1;
 666         }
 667         if (strncmp(argv[1], "tree", 4) == 0) {
 668                 puts("USB device tree:\n");
 669                 usb_show_tree();
 670                 return 0;
 671         }
 672         if (strncmp(argv[1], "inf", 3) == 0) {
 673                 if (argc == 2) {
 674 #ifdef CONFIG_DM_USB
 675                         usb_device_info();
 676 #else
 677                         int d;
 678                         for (d = 0; d < USB_MAX_DEVICE; d++) {
 679                                 udev = usb_get_dev_index(d);
 680                                 if (udev == NULL)
 681                                         break;
 682                                 usb_display_desc(udev);
 683                                 usb_display_config(udev);
 684                         }
 685 #endif
 686                         return 0;
 687                 } else {
 688                         /*
 689                          * With driver model this isn't right since we can
 690                          * have multiple controllers and the device numbering
 691                          * starts at 1 on each bus.
 692                          */
 693                         i = simple_strtoul(argv[2], NULL, 10);
 694                         printf("config for device %d\n", i);
 695                         udev = usb_find_device(i);
 696                         if (udev == NULL) {
 697                                 printf("*** No device available ***\n");
 698                                 return 0;
 699                         } else {
 700                                 usb_display_desc(udev);
 701                                 usb_display_config(udev);
 702                         }
 703                 }
 704                 return 0;
 705         }
 706         if (strncmp(argv[1], "test", 4) == 0) {
 707                 if (argc < 5)
 708                         return CMD_RET_USAGE;
 709                 i = simple_strtoul(argv[2], NULL, 10);
 710                 udev = usb_find_device(i);
 711                 if (udev == NULL) {
 712                         printf("Device %d does not exist.\n", i);
 713                         return 1;
 714                 }
 715                 i = simple_strtoul(argv[3], NULL, 10);
 716                 return usb_test(udev, i, argv[4]);
 717         }
 718 #ifdef CONFIG_USB_STORAGE
 719         if (strncmp(argv[1], "stor", 4) == 0)
 720                 return usb_stor_info();
 721
 722         if (strncmp(argv[1], "part", 4) == 0) {
 723                 int devno, ok = 0;
 724                 if (argc == 2) {
 725                         for (devno = 0; ; ++devno) {
 726                                 stor_dev = usb_stor_get_dev(devno);
 727                                 if (stor_dev == NULL)
 728                                         break;
 729                                 if (stor_dev->type != DEV_TYPE_UNKNOWN) {
 730                                         ok++;
 731                                         if (devno)
 732                                                 printf("\n");
 733                                         debug("print_part of %x\n", devno);
 734                                         part_print(stor_dev);
 735                                 }
 736                         }
 737                 } else {
 738                         devno = simple_strtoul(argv[2], NULL, 16);
 739                         stor_dev = usb_stor_get_dev(devno);
 740                         if (stor_dev != NULL &&
 741                             stor_dev->type != DEV_TYPE_UNKNOWN) {
 742                                 ok++;
 743                                 debug("print_part of %x\n", devno);
 744                                 part_print(stor_dev);
 745                         }
 746                 }
 747                 if (!ok) {
 748                         printf("\nno USB devices available\n");
 749                         return 1;
 750                 }
 751                 return 0;
 752         }
 753         if (strcmp(argv[1], "read") == 0) {
 754                 if (usb_stor_curr_dev < 0) {
 755                         printf("no current device selected\n");
 756                         return 1;
 757                 }
 758                 if (argc == 5) {
 759                         unsigned long addr = simple_strtoul(argv[2], NULL, 16);
 760                         unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
 761                         unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
 762                         unsigned long n;
 763                         printf("\nUSB read: device %d block # %ld, count %ld"
 764                                 " ... ", usb_stor_curr_dev, blk, cnt);
 765                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
 766                         n = blk_dread(stor_dev, blk, cnt, (ulong *)addr);
 767                         printf("%ld blocks read: %s\n", n,
 768                                 (n == cnt) ? "OK" : "ERROR");
 769                         if (n == cnt)
 770                                 return 0;
 771                         return 1;
 772                 }
 773         }
 774         if (strcmp(argv[1], "write") == 0) {
 775                 if (usb_stor_curr_dev < 0) {
 776                         printf("no current device selected\n");
 777                         return 1;
 778                 }
 779                 if (argc == 5) {
 780                         unsigned long addr = simple_strtoul(argv[2], NULL, 16);
 781                         unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
 782                         unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
 783                         unsigned long n;
 784                         printf("\nUSB write: device %d block # %ld, count %ld"
 785                                 " ... ", usb_stor_curr_dev, blk, cnt);
 786                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
 787                         n = blk_dwrite(stor_dev, blk, cnt, (ulong *)addr);
 788                         printf("%ld blocks write: %s\n", n,
 789                                 (n == cnt) ? "OK" : "ERROR");
 790                         if (n == cnt)
 791                                 return 0;
 792                         return 1;
 793                 }
 794         }
 795         if (strncmp(argv[1], "dev", 3) == 0) {
 796                 if (argc == 3) {
 797                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
 798                         printf("\nUSB device %d: ", dev);
 799                         stor_dev = usb_stor_get_dev(dev);
 800                         if (stor_dev == NULL) {
 801                                 printf("unknown device\n");
 802                                 return 1;
 803                         }
 804                         printf("\n    Device %d: ", dev);
 805                         dev_print(stor_dev);
 806                         if (stor_dev->type == DEV_TYPE_UNKNOWN)
 807                                 return 1;
 808                         usb_stor_curr_dev = dev;
 809                         printf("... is now current device\n");
 810                         return 0;
 811                 } else {
 812                         printf("\nUSB device %d: ", usb_stor_curr_dev);
 813                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
 814                         dev_print(stor_dev);
 815                         if (stor_dev->type == DEV_TYPE_UNKNOWN)
 816                                 return 1;
 817                         return 0;
 818                 }
 819                 return 0;
 820         }
 821 #endif /* CONFIG_USB_STORAGE */
 822         return CMD_RET_USAGE;
 823 }
 824
 825 U_BOOT_CMD(
 826         usb,    5,      1,      do_usb,
 827         "USB sub-system",
 828         "start - start (scan) USB controller\n"
 829         "usb reset - reset (rescan) USB controller\n"
 830         "usb stop [f] - stop USB [f]=force stop\n"
 831         "usb tree - show USB device tree\n"
 832         "usb info [dev] - show available USB devices\n"
 833         "usb test [dev] [port] [mode] - set USB 2.0 test mode\n"
 834         "    (specify port 0 to indicate the device's upstream port)\n"
 835         "    Available modes: J, K, S[E0_NAK], P[acket], F[orce_Enable]\n"
 836 #ifdef CONFIG_USB_STORAGE
 837         "usb storage - show details of USB storage devices\n"
 838         "usb dev [dev] - show or set current USB storage device\n"
 839         "usb part [dev] - print partition table of one or all USB storage"
 840         "    devices\n"
 841         "usb read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
 842         "    to memory address `addr'\n"
 843         "usb write addr blk# cnt - write `cnt' blocks starting at block `blk#'\n"
 844         "    from memory address `addr'"
 845 #endif /* CONFIG_USB_STORAGE */
 846 );
 847
 848
 849 #ifdef CONFIG_USB_STORAGE
 850 U_BOOT_CMD(
 851         usbboot,        3,      1,      do_usbboot,
 852         "boot from USB device",
 853         "loadAddr dev:part"
 854 );
 855 #endif /* CONFIG_USB_STORAGE */