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
  31 #if (CONFIG_COMMANDS & CFG_CMD_USB)
  32
  33 #include <usb.h>
  34
  35 #ifdef CONFIG_USB_STORAGE
  36 static int usb_stor_curr_dev=-1; /* current device */
  37 #endif
  38
  39 /* some display routines (info command) */
  40 char * usb_get_class_desc(unsigned char dclass)
  41 {
  42         switch(dclass) {
  43                 case USB_CLASS_PER_INTERFACE:
  44                         return("See Interface");
  45                 case USB_CLASS_AUDIO:
  46                         return("Audio");
  47                 case USB_CLASS_COMM:
  48                         return("Communication");
  49                 case USB_CLASS_HID:
  50                         return("Human Interface");
  51                 case USB_CLASS_PRINTER:
  52                         return("Printer");
  53                 case USB_CLASS_MASS_STORAGE:
  54                         return("Mass Storage");
  55                 case USB_CLASS_HUB:
  56                         return("Hub");
  57                 case USB_CLASS_DATA:
  58                         return("CDC Data");
  59                 case USB_CLASS_VENDOR_SPEC:
  60                         return("Vendor specific");
  61                 default :
  62                         return("");
  63         }
  64 }
  65
  66 void usb_display_class_sub(unsigned char dclass,unsigned char subclass,unsigned char proto)
  67 {
  68         switch(dclass) {
  69                 case USB_CLASS_PER_INTERFACE:
  70                         printf("See Interface");
  71                         break;
  72                 case USB_CLASS_HID:
  73                         printf("Human Interface, Subclass: ");
  74                         switch(subclass) {
  75                                 case USB_SUB_HID_NONE:
  76                                         printf("None");
  77                                         break;
  78                                 case USB_SUB_HID_BOOT:
  79                                         printf("Boot ");
  80                                         switch(proto) {
  81                                                 case USB_PROT_HID_NONE:
  82                                                         printf("None");
  83                                                         break;
  84                                                 case USB_PROT_HID_KEYBOARD:
  85                                                         printf("Keyboard");
  86                                                         break;
  87                                                 case USB_PROT_HID_MOUSE:
  88                                                         printf("Mouse");
  89                                                         break;
  90                                                 default:
  91                                                         printf("reserved");
  92                                         }
  93                                         break;
  94                                 default:
  95                                         printf("reserved");
  96                         }
  97                         break;
  98                 case USB_CLASS_MASS_STORAGE:
  99                         printf("Mass Storage, ");
 100                         switch(subclass) {
 101                                 case US_SC_RBC:
 102                                         printf("RBC ");
 103                                         break;
 104                                 case US_SC_8020:
 105                                         printf("SFF-8020i (ATAPI)");
 106                                         break;
 107                                 case US_SC_QIC:
 108                                         printf("QIC-157 (Tape)");
 109                                         break;
 110                                 case US_SC_UFI:
 111                                         printf("UFI");
 112                                         break;
 113                                 case US_SC_8070:
 114                                         printf("SFF-8070");
 115                                         break;
 116                                 case US_SC_SCSI:
 117                                         printf("Transp. SCSI");
 118                                         break;
 119                                 default:
 120                                         printf("reserved");
 121                                         break;
 122                         }
 123                         printf(", ");
 124                         switch(proto) {
 125                                 case US_PR_CB:
 126                                         printf("Command/Bulk");
 127                                         break;
 128                                 case US_PR_CBI:
 129                                         printf("Command/Bulk/Int");
 130                                         break;
 131                                 case US_PR_BULK:
 132                                         printf("Bulk only");
 133                                         break;
 134                                 default:
 135                                         printf("reserved");
 136                         }
 137                         break;
 138                 default:
 139                         printf("%s",usb_get_class_desc(dclass));
 140         }
 141 }
 142
 143 void usb_display_string(struct usb_device *dev,int index)
 144 {
 145         char buffer[256];
 146         if (index!=0) {
 147                 if (usb_string(dev,index,&buffer[0],256)>0);
 148                         printf("String: \"%s\"",buffer);
 149         }
 150 }
 151
 152 void usb_display_desc(struct usb_device *dev)
 153 {
 154         if (dev->descriptor.bDescriptorType==USB_DT_DEVICE) {
 155                 printf("%d: %s,  USB Revision %x.%x\n",dev->devnum,usb_get_class_desc(dev->config.if_desc[0].bInterfaceClass),
 156                         (dev->descriptor.bcdUSB>>8) & 0xff,dev->descriptor.bcdUSB & 0xff);
 157                 if (strlen(dev->mf) || strlen(dev->prod) || strlen(dev->serial))
 158                         printf(" - %s %s %s\n",dev->mf,dev->prod,dev->serial);
 159                 if (dev->descriptor.bDeviceClass) {
 160                         printf(" - Class: ");
 161                         usb_display_class_sub(dev->descriptor.bDeviceClass,dev->descriptor.bDeviceSubClass,dev->descriptor.bDeviceProtocol);
 162                         printf("\n");
 163                 }
 164                 else {
 165                         printf(" - Class: (from Interface) %s\n",usb_get_class_desc(dev->config.if_desc[0].bInterfaceClass));
 166                 }
 167                 printf(" - PacketSize: %d  Configurations: %d\n",dev->descriptor.bMaxPacketSize0,dev->descriptor.bNumConfigurations);
 168                 printf(" - Vendor: 0x%04x  Product 0x%04x Version %d.%d\n",dev->descriptor.idVendor,dev->descriptor.idProduct,(dev->descriptor.bcdDevice>>8) & 0xff,dev->descriptor.bcdDevice & 0xff);
 169         }
 170
 171 }
 172
 173 void usb_display_conf_desc(struct usb_config_descriptor *config,struct usb_device *dev)
 174 {
 175         printf("   Configuration: %d\n",config->bConfigurationValue);
 176         printf("   - Interfaces: %d %s%s%dmA\n",config->bNumInterfaces,(config->bmAttributes & 0x40) ? "Self Powered " : "Bus Powered ",
 177         (config->bmAttributes & 0x20) ? "Remote Wakeup " : "",config->MaxPower*2);
 178         if (config->iConfiguration) {
 179                 printf("   - ");
 180                 usb_display_string(dev,config->iConfiguration);
 181                 printf("\n");
 182         }
 183 }
 184
 185 void usb_display_if_desc(struct usb_interface_descriptor *ifdesc,struct usb_device *dev)
 186 {
 187         printf("     Interface: %d\n",ifdesc->bInterfaceNumber);
 188         printf("     - Alternate Settings %d, Endpoints: %d\n",ifdesc->bAlternateSetting,ifdesc->bNumEndpoints);
 189         printf("     - Class ");
 190         usb_display_class_sub(ifdesc->bInterfaceClass,ifdesc->bInterfaceSubClass,ifdesc->bInterfaceProtocol);
 191         printf("\n");
 192         if (ifdesc->iInterface) {
 193                 printf("     - ");
 194                 usb_display_string(dev,ifdesc->iInterface);
 195                 printf("\n");
 196         }
 197 }
 198
 199 void usb_display_ep_desc(struct usb_endpoint_descriptor *epdesc)
 200 {
 201         printf("     - Endpoint %d %s ",epdesc->bEndpointAddress & 0xf,(epdesc->bEndpointAddress & 0x80) ? "In" : "Out");
 202         switch((epdesc->bmAttributes & 0x03))
 203         {
 204                 case 0: printf("Control"); break;
 205                 case 1: printf("Isochronous"); break;
 206                 case 2: printf("Bulk"); break;
 207                 case 3: printf("Interrupt"); break;
 208         }
 209         printf(" MaxPacket %d",epdesc->wMaxPacketSize);
 210         if ((epdesc->bmAttributes & 0x03)==0x3)
 211                 printf(" Interval %dms",epdesc->bInterval);
 212         printf("\n");
 213 }
 214
 215 /* main routine to diasplay the configs, interfaces and endpoints */
 216 void usb_display_config(struct usb_device *dev)
 217 {
 218         struct usb_config_descriptor *config;
 219         struct usb_interface_descriptor *ifdesc;
 220         struct usb_endpoint_descriptor *epdesc;
 221         int i,ii;
 222
 223         config= &dev->config;
 224         usb_display_conf_desc(config,dev);
 225         for(i=0;i<config->no_of_if;i++) {
 226                 ifdesc= &config->if_desc[i];
 227                 usb_display_if_desc(ifdesc,dev);
 228                 for(ii=0;ii<ifdesc->no_of_ep;ii++) {
 229                         epdesc= &ifdesc->ep_desc[ii];
 230                         usb_display_ep_desc(epdesc);
 231                 }
 232         }
 233         printf("\n");
 234 }
 235
 236 /* shows the device tree recursively */
 237 void usb_show_tree_graph(struct usb_device *dev,char *pre)
 238 {
 239         int i,index;
 240         int has_child,last_child,port;
 241
 242         index=strlen(pre);
 243         printf(" %s",pre);
 244         /* check if the device has connected children */
 245         has_child=0;
 246         for(i=0;i<dev->maxchild;i++) {
 247                 if (dev->children[i]!=NULL)
 248                         has_child=1;
 249         }
 250         /* check if we are the last one */
 251         last_child=1;
 252         if (dev->parent!=NULL) {
 253                 for(i=0;i<dev->parent->maxchild;i++) {
 254                         /* search for children */
 255                         if (dev->parent->children[i]==dev) {
 256                                 /* found our pointer, see if we have a little sister */
 257                                 port=i;
 258                                 while(i++<dev->parent->maxchild) {
 259                                         if (dev->parent->children[i]!=NULL) {
 260                                                 /* found a sister */
 261                                                 last_child=0;
 262                                                 break;
 263                                         } /* if */
 264                                 } /* while */
 265                         } /* device found */
 266                 } /* for all children of the parent */
 267                 printf("\b+-");
 268                 /* correct last child */
 269                 if (last_child) {
 270                         pre[index-1]=' ';
 271                 }
 272         } /* if not root hub */
 273         else
 274                 printf(" ");
 275         printf("%d ",dev->devnum);
 276         pre[index++]=' ';
 277         pre[index++]= has_child ? '|' : ' ';
 278         pre[index]=0;
 279         printf(" %s (%s, %dmA)\n",usb_get_class_desc(dev->config.if_desc[0].bInterfaceClass),
 280                 dev->slow ? "1.5MBit/s" : "12MBit/s",dev->config.MaxPower * 2);
 281         if (strlen(dev->mf) ||
 282            strlen(dev->prod) ||
 283            strlen(dev->serial))
 284                 printf(" %s  %s %s %s\n",pre,dev->mf,dev->prod,dev->serial);
 285         printf(" %s\n",pre);
 286         if (dev->maxchild>0) {
 287                 for(i=0;i<dev->maxchild;i++) {
 288                         if (dev->children[i]!=NULL) {
 289                                 usb_show_tree_graph(dev->children[i],pre);
 290                                 pre[index]=0;
 291                         }
 292                 }
 293         }
 294 }
 295
 296 /* main routine for the tree command */
 297 void usb_show_tree(struct usb_device *dev)
 298 {
 299         char preamble[32];
 300
 301         memset(preamble,0,32);
 302         usb_show_tree_graph(dev,&preamble[0]);
 303 }
 304
 305
 306 /******************************************************************************
 307  * usb boot command intepreter. Derived from diskboot
 308  */
 309 #ifdef CONFIG_USB_STORAGE
 310 int do_usbboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 311 {
 312         char *boot_device = NULL;
 313         char *ep;
 314         int dev, part=1, rcode;
 315         ulong addr, cnt, checksum;
 316         disk_partition_t info;
 317         image_header_t *hdr;
 318         block_dev_desc_t *stor_dev;
 319
 320
 321         switch (argc) {
 322         case 1:
 323                 addr = CFG_LOAD_ADDR;
 324                 boot_device = getenv ("bootdevice");
 325                 break;
 326         case 2:
 327                 addr = simple_strtoul(argv[1], NULL, 16);
 328                 boot_device = getenv ("bootdevice");
 329                 break;
 330         case 3:
 331                 addr = simple_strtoul(argv[1], NULL, 16);
 332                 boot_device = argv[2];
 333                 break;
 334         default:
 335                 printf ("Usage:\n%s\n", cmdtp->usage);
 336                 return 1;
 337         }
 338
 339         if (!boot_device) {
 340                 puts ("\n** No boot device **\n");
 341                 return 1;
 342         }
 343
 344         dev = simple_strtoul(boot_device, &ep, 16);
 345         stor_dev=usb_stor_get_dev(dev);
 346         if (stor_dev->type == DEV_TYPE_UNKNOWN) {
 347                 printf ("\n** Device %d not available\n", dev);
 348                 return 1;
 349         }
 350         if (stor_dev->block_read==NULL) {
 351                 printf("storage device not initialized. Use usb scan\n");
 352                 return 1;
 353         }
 354         if (*ep) {
 355                 if (*ep != ':') {
 356                         puts ("\n** Invalid boot device, use `dev[:part]' **\n");
 357                         return 1;
 358                 }
 359                 part = simple_strtoul(++ep, NULL, 16);
 360         }
 361
 362         if (get_partition_info (stor_dev, part, &info)) {
 363                 /* try to boot raw .... */
 364                 strncpy(&info.type[0], BOOT_PART_TYPE, sizeof(BOOT_PART_TYPE));
 365                 strncpy(&info.name[0], "Raw", 4);
 366                 info.start=0;
 367                 info.blksz=0x200;
 368                 info.size=2880;
 369                 printf("error reading partinfo...try to boot raw\n");
 370         }
 371         if ((strncmp(info.type, BOOT_PART_TYPE, sizeof(info.type)) != 0) &&
 372             (strncmp(info.type, BOOT_PART_COMP, sizeof(info.type)) != 0)) {
 373                 printf ("\n** Invalid partition type \"%.32s\""
 374                         " (expect \"" BOOT_PART_TYPE "\")\n",
 375                         info.type);
 376                 return 1;
 377         }
 378         printf ("\nLoading from USB device %d, partition %d: "
 379                 "Name: %.32s  Type: %.32s\n",
 380                 dev, part, info.name, info.type);
 381
 382         debug ("First Block: %ld,  # of blocks: %ld, Block Size: %ld\n",
 383                 info.start, info.size, info.blksz);
 384
 385         if (stor_dev->block_read(dev, info.start, 1, (ulong *)addr) != 1) {
 386                 printf ("** Read error on %d:%d\n", dev, part);
 387                 return 1;
 388         }
 389
 390         hdr = (image_header_t *)addr;
 391
 392         if (ntohl(hdr->ih_magic) != IH_MAGIC) {
 393                 printf("\n** Bad Magic Number **\n");
 394                 return 1;
 395         }
 396
 397         checksum = ntohl(hdr->ih_hcrc);
 398         hdr->ih_hcrc = 0;
 399
 400         if (crc32 (0, (char *)hdr, sizeof(image_header_t)) != checksum) {
 401                 puts ("\n** Bad Header Checksum **\n");
 402                 return 1;
 403         }
 404         hdr->ih_hcrc = htonl(checksum); /* restore checksum for later use */
 405
 406         print_image_hdr (hdr);
 407
 408         cnt = (ntohl(hdr->ih_size) + sizeof(image_header_t));
 409         cnt += info.blksz - 1;
 410         cnt /= info.blksz;
 411         cnt -= 1;
 412
 413         if (stor_dev->block_read (dev, info.start+1, cnt,
 414                       (ulong *)(addr+info.blksz)) != cnt) {
 415                 printf ("\n** Read error on %d:%d\n", dev, part);
 416                 return 1;
 417         }
 418         /* Loading ok, update default load address */
 419         load_addr = addr;
 420
 421         flush_cache (addr, (cnt+1)*info.blksz);
 422
 423         /* Check if we should attempt an auto-start */
 424         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
 425                 char *local_args[2];
 426                 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
 427                 local_args[0] = argv[0];
 428                 local_args[1] = NULL;
 429                 printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
 430                 rcode=do_bootm (cmdtp, 0, 1, local_args);
 431                 return rcode;
 432         }
 433         return 0;
 434 }
 435 #endif /* CONFIG_USB_STORAGE */
 436
 437
 438 /*********************************************************************************
 439  * usb command intepreter
 440  */
 441 int do_usb (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 442 {
 443
 444         int i;
 445         struct usb_device *dev = NULL;
 446 #ifdef CONFIG_USB_STORAGE
 447         block_dev_desc_t *stor_dev;
 448 #endif
 449
 450         if ((strncmp(argv[1],"reset",5) == 0) ||
 451                  (strncmp(argv[1],"start",5) == 0)){
 452                 usb_stop();
 453                 printf("(Re)start USB...\n");
 454                 usb_init();
 455                 return 0;
 456         }
 457         if (strncmp(argv[1],"stop",4) == 0) {
 458 #ifdef CONFIG_USB_KEYBOARD
 459                 if (argc==2) {
 460                         if (usb_kbd_deregister()!=0) {
 461                                 printf("USB not stopped: usbkbd still using USB\n");
 462                                 return 1;
 463                         }
 464                 }
 465                 else { /* forced stop, switch console in to serial */
 466                         console_assign(stdin,"serial");
 467                         usb_kbd_deregister();
 468                 }
 469 #endif
 470                 printf("stopping USB..\n");
 471                 usb_stop();
 472                 return 0;
 473         }
 474         if (strncmp(argv[1],"tree",4) == 0) {
 475                 printf("\nDevice Tree:\n");
 476                 usb_show_tree(usb_get_dev_index(0));
 477                 return 0;
 478         }
 479         if (strncmp(argv[1],"inf",3) == 0) {
 480                 int d;
 481                 if (argc==2) {
 482                         for(d=0;d<USB_MAX_DEVICE;d++) {
 483                                 dev=usb_get_dev_index(d);
 484                                 if (dev==NULL)
 485                                         break;
 486                                 usb_display_desc(dev);
 487                                 usb_display_config(dev);
 488                         }
 489                         return 0;
 490                 }
 491                 else {
 492                         int d;
 493
 494                         i=simple_strtoul(argv[2], NULL, 16);
 495                         printf("config for device %d\n",i);
 496                         for(d=0;d<USB_MAX_DEVICE;d++) {
 497                                 dev=usb_get_dev_index(d);
 498                                 if (dev==NULL)
 499                                         break;
 500                                 if (dev->devnum==i)
 501                                         break;
 502                         }
 503                         if (dev==NULL) {
 504                                 printf("*** NO Device avaiable ***\n");
 505                                 return 0;
 506                         }
 507                         else {
 508                                 usb_display_desc(dev);
 509                                 usb_display_config(dev);
 510                         }
 511                 }
 512                 return 0;
 513         }
 514 #ifdef CONFIG_USB_STORAGE
 515         if (strncmp(argv[1],"scan",4) == 0) {
 516                 printf("Scan for storage device:\n");
 517                 usb_stor_curr_dev=usb_stor_scan(1);
 518                 if (usb_stor_curr_dev==-1) {
 519                         printf("No device found. Not initialized?\n");
 520                         return 1;
 521                 }
 522                 return 0;
 523         }
 524         if (strncmp(argv[1],"part",4) == 0) {
 525                 int devno, ok;
 526                 for (ok=0, devno=0; devno<USB_MAX_STOR_DEV; ++devno) {
 527                         stor_dev=usb_stor_get_dev(devno);
 528                         if (stor_dev->type!=DEV_TYPE_UNKNOWN) {
 529                                 ok++;
 530                                 if (devno)
 531                                         printf("\n");
 532                                 printf("print_part of %x\n",devno);
 533                                 print_part(stor_dev);
 534                         }
 535                 }
 536                 if (!ok) {
 537                         printf("\nno USB devices available\n");
 538                         return 1;
 539                 }
 540                 return 0;
 541         }
 542         if (strcmp(argv[1],"read") == 0) {
 543                 if (usb_stor_curr_dev<0) {
 544                         printf("no current device selected\n");
 545                         return 1;
 546                 }
 547                 if (argc==5) {
 548                         unsigned long addr = simple_strtoul(argv[2], NULL, 16);
 549                         unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
 550                         unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
 551                         unsigned long n;
 552                         printf ("\nUSB read: device %d block # %ld, count %ld ... ",
 553                                         usb_stor_curr_dev, blk, cnt);
 554                         stor_dev=usb_stor_get_dev(usb_stor_curr_dev);
 555                         n = stor_dev->block_read(usb_stor_curr_dev, blk, cnt, (ulong *)addr);
 556                         printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
 557                         if (n==cnt)
 558                                 return 0;
 559                         return 1;
 560                 }
 561         }
 562         if (strcmp(argv[1],"dev") == 0) {
 563                 if (argc==3) {
 564                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
 565                         printf ("\nUSB device %d: ", dev);
 566                         if (dev >= USB_MAX_STOR_DEV) {
 567                                 printf("unknown device\n");
 568                                 return 1;
 569                         }
 570                         printf ("\n    Device %d: ", dev);
 571                         stor_dev=usb_stor_get_dev(dev);
 572                         dev_print(stor_dev);
 573                         if (stor_dev->type == DEV_TYPE_UNKNOWN) {
 574                                 return 1;
 575                         }
 576                         usb_stor_curr_dev = dev;
 577                         printf("... is now current device\n");
 578                         return 0;
 579                 }
 580                 else {
 581                         printf ("\nUSB device %d: ", usb_stor_curr_dev);
 582                         stor_dev=usb_stor_get_dev(usb_stor_curr_dev);
 583                         dev_print(stor_dev);
 584                         if (stor_dev->type == DEV_TYPE_UNKNOWN) {
 585                                 return 1;
 586                         }
 587                         return 0;
 588                 }
 589                 return 0;
 590         }
 591 #endif /* CONFIG_USB_STORAGE */
 592         printf ("Usage:\n%s\n", cmdtp->usage);
 593         return 1;
 594 }
 595
 596
 597 #endif /* (CONFIG_COMMANDS & CFG_CMD_USB) */
 598
 599
 600 #if (CONFIG_COMMANDS & CFG_CMD_USB)
 601
 602 #ifdef CONFIG_USB_STORAGE
 603 U_BOOT_CMD(
 604         usb,    5,      1,      do_usb,
 605         "usb     - USB sub-system\n",
 606         "reset - reset (rescan) USB controller\n"
 607         "usb stop [f]  - stop USB [f]=force stop\n"
 608         "usb tree  - show USB device tree\n"
 609         "usb info [dev] - show available USB devices\n"
 610         "usb scan  - (re-)scan USB bus for storage devices\n"
 611         "usb device [dev] - show or set current USB storage device\n"
 612         "usb part [dev] - print partition table of one or all USB storage devices\n"
 613         "usb read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
 614         "    to memory address `addr'\n"
 615 );
 616
 617
 618 U_BOOT_CMD(
 619         usbboot,        3,      1,      do_usbboot,
 620         "usbboot - boot from USB device\n",
 621         "loadAddr dev:part\n"
 622 );
 623
 624 #else
 625 U_BOOT_CMD(
 626         usb,    5,      1,      do_usb,
 627         "usb     - USB sub-system\n",
 628         "reset - reset (rescan) USB controller\n"
 629         "usb  tree  - show USB device tree\n"
 630         "usb  info [dev] - show available USB devices\n"
 631 );
 632 #endif
 633 #endif