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