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