USB: Use (get|put)_unaligned for accessing wMaxPacketSize
[platform/kernel/u-boot.git] / common / cmd_usb.c
1 /*
2  * (C) Copyright 2001
3  * Denis Peter, MPL AG Switzerland
4  *
5  * Most of this source has been derived from the Linux USB
6  * project.
7  *
8  * See file CREDITS for list of people who contributed to this
9  * project.
10  *
11  * This program is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU General Public License as
13  * published by the Free Software Foundation; either version 2 of
14  * the License, or (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19  * GNU General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program; if not, write to the Free Software
23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24  * MA 02111-1307 USA
25  *
26  */
27
28 #include <common.h>
29 #include <command.h>
30 #include <asm/byteorder.h>
31 #include <asm/unaligned.h>
32 #include <part.h>
33 #include <usb.h>
34
35 #ifdef CONFIG_USB_STORAGE
36 static int usb_stor_curr_dev = -1; /* current device */
37 #endif
38 #ifdef CONFIG_USB_HOST_ETHER
39 static int usb_ether_curr_dev = -1; /* current ethernet device */
40 #endif
41
42 /* some display routines (info command) */
43 char *usb_get_class_desc(unsigned char dclass)
44 {
45         switch (dclass) {
46         case USB_CLASS_PER_INTERFACE:
47                 return "See Interface";
48         case USB_CLASS_AUDIO:
49                 return "Audio";
50         case USB_CLASS_COMM:
51                 return "Communication";
52         case USB_CLASS_HID:
53                 return "Human Interface";
54         case USB_CLASS_PRINTER:
55                 return "Printer";
56         case USB_CLASS_MASS_STORAGE:
57                 return "Mass Storage";
58         case USB_CLASS_HUB:
59                 return "Hub";
60         case USB_CLASS_DATA:
61                 return "CDC Data";
62         case USB_CLASS_VENDOR_SPEC:
63                 return "Vendor specific";
64         default:
65                 return "";
66         }
67 }
68
69 void usb_display_class_sub(unsigned char dclass, unsigned char subclass,
70                            unsigned char proto)
71 {
72         switch (dclass) {
73         case USB_CLASS_PER_INTERFACE:
74                 printf("See Interface");
75                 break;
76         case USB_CLASS_HID:
77                 printf("Human Interface, Subclass: ");
78                 switch (subclass) {
79                 case USB_SUB_HID_NONE:
80                         printf("None");
81                         break;
82                 case USB_SUB_HID_BOOT:
83                         printf("Boot ");
84                         switch (proto) {
85                         case USB_PROT_HID_NONE:
86                                 printf("None");
87                                 break;
88                         case USB_PROT_HID_KEYBOARD:
89                                 printf("Keyboard");
90                                 break;
91                         case USB_PROT_HID_MOUSE:
92                                 printf("Mouse");
93                                 break;
94                         default:
95                                 printf("reserved");
96                                 break;
97                         }
98                         break;
99                 default:
100                         printf("reserved");
101                         break;
102                 }
103                 break;
104         case USB_CLASS_MASS_STORAGE:
105                 printf("Mass Storage, ");
106                 switch (subclass) {
107                 case US_SC_RBC:
108                         printf("RBC ");
109                         break;
110                 case US_SC_8020:
111                         printf("SFF-8020i (ATAPI)");
112                         break;
113                 case US_SC_QIC:
114                         printf("QIC-157 (Tape)");
115                         break;
116                 case US_SC_UFI:
117                         printf("UFI");
118                         break;
119                 case US_SC_8070:
120                         printf("SFF-8070");
121                         break;
122                 case US_SC_SCSI:
123                         printf("Transp. SCSI");
124                         break;
125                 default:
126                         printf("reserved");
127                         break;
128                 }
129                 printf(", ");
130                 switch (proto) {
131                 case US_PR_CB:
132                         printf("Command/Bulk");
133                         break;
134                 case US_PR_CBI:
135                         printf("Command/Bulk/Int");
136                         break;
137                 case US_PR_BULK:
138                         printf("Bulk only");
139                         break;
140                 default:
141                         printf("reserved");
142                         break;
143                 }
144                 break;
145         default:
146                 printf("%s", usb_get_class_desc(dclass));
147                 break;
148         }
149 }
150
151 void usb_display_string(struct usb_device *dev, int index)
152 {
153         char buffer[256];
154         if (index != 0) {
155                 if (usb_string(dev, index, &buffer[0], 256) > 0)
156                         printf("String: \"%s\"", buffer);
157         }
158 }
159
160 void usb_display_desc(struct usb_device *dev)
161 {
162         if (dev->descriptor.bDescriptorType == USB_DT_DEVICE) {
163                 printf("%d: %s,  USB Revision %x.%x\n", dev->devnum,
164                 usb_get_class_desc(dev->config.if_desc[0].desc.bInterfaceClass),
165                                    (dev->descriptor.bcdUSB>>8) & 0xff,
166                                    dev->descriptor.bcdUSB & 0xff);
167
168                 if (strlen(dev->mf) || strlen(dev->prod) ||
169                     strlen(dev->serial))
170                         printf(" - %s %s %s\n", dev->mf, dev->prod,
171                                 dev->serial);
172                 if (dev->descriptor.bDeviceClass) {
173                         printf(" - Class: ");
174                         usb_display_class_sub(dev->descriptor.bDeviceClass,
175                                               dev->descriptor.bDeviceSubClass,
176                                               dev->descriptor.bDeviceProtocol);
177                         printf("\n");
178                 } else {
179                         printf(" - Class: (from Interface) %s\n",
180                                usb_get_class_desc(
181                                 dev->config.if_desc[0].desc.bInterfaceClass));
182                 }
183                 printf(" - PacketSize: %d  Configurations: %d\n",
184                         dev->descriptor.bMaxPacketSize0,
185                         dev->descriptor.bNumConfigurations);
186                 printf(" - Vendor: 0x%04x  Product 0x%04x Version %d.%d\n",
187                         dev->descriptor.idVendor, dev->descriptor.idProduct,
188                         (dev->descriptor.bcdDevice>>8) & 0xff,
189                         dev->descriptor.bcdDevice & 0xff);
190         }
191
192 }
193
194 void usb_display_conf_desc(struct usb_configuration_descriptor *config,
195                            struct usb_device *dev)
196 {
197         printf("   Configuration: %d\n", config->bConfigurationValue);
198         printf("   - Interfaces: %d %s%s%dmA\n", config->bNumInterfaces,
199                (config->bmAttributes & 0x40) ? "Self Powered " : "Bus Powered ",
200                (config->bmAttributes & 0x20) ? "Remote Wakeup " : "",
201                 config->bMaxPower*2);
202         if (config->iConfiguration) {
203                 printf("   - ");
204                 usb_display_string(dev, config->iConfiguration);
205                 printf("\n");
206         }
207 }
208
209 void usb_display_if_desc(struct usb_interface_descriptor *ifdesc,
210                          struct usb_device *dev)
211 {
212         printf("     Interface: %d\n", ifdesc->bInterfaceNumber);
213         printf("     - Alternate Setting %d, Endpoints: %d\n",
214                 ifdesc->bAlternateSetting, ifdesc->bNumEndpoints);
215         printf("     - Class ");
216         usb_display_class_sub(ifdesc->bInterfaceClass,
217                 ifdesc->bInterfaceSubClass, ifdesc->bInterfaceProtocol);
218         printf("\n");
219         if (ifdesc->iInterface) {
220                 printf("     - ");
221                 usb_display_string(dev, ifdesc->iInterface);
222                 printf("\n");
223         }
224 }
225
226 void usb_display_ep_desc(struct usb_endpoint_descriptor *epdesc)
227 {
228         printf("     - Endpoint %d %s ", epdesc->bEndpointAddress & 0xf,
229                 (epdesc->bEndpointAddress & 0x80) ? "In" : "Out");
230         switch ((epdesc->bmAttributes & 0x03)) {
231         case 0:
232                 printf("Control");
233                 break;
234         case 1:
235                 printf("Isochronous");
236                 break;
237         case 2:
238                 printf("Bulk");
239                 break;
240         case 3:
241                 printf("Interrupt");
242                 break;
243         }
244         printf(" MaxPacket %d", get_unaligned(&epdesc->wMaxPacketSize));
245         if ((epdesc->bmAttributes & 0x03) == 0x3)
246                 printf(" Interval %dms", epdesc->bInterval);
247         printf("\n");
248 }
249
250 /* main routine to diasplay the configs, interfaces and endpoints */
251 void usb_display_config(struct usb_device *dev)
252 {
253         struct usb_config *config;
254         struct usb_interface *ifdesc;
255         struct usb_endpoint_descriptor *epdesc;
256         int i, ii;
257
258         config = &dev->config;
259         usb_display_conf_desc(&config->desc, dev);
260         for (i = 0; i < config->no_of_if; i++) {
261                 ifdesc = &config->if_desc[i];
262                 usb_display_if_desc(&ifdesc->desc, dev);
263                 for (ii = 0; ii < ifdesc->no_of_ep; ii++) {
264                         epdesc = &ifdesc->ep_desc[ii];
265                         usb_display_ep_desc(epdesc);
266                 }
267         }
268         printf("\n");
269 }
270
271 static inline char *portspeed(int speed)
272 {
273         if (speed == USB_SPEED_HIGH)
274                 return "480 Mb/s";
275         else if (speed == USB_SPEED_LOW)
276                 return "1.5 Mb/s";
277         else
278                 return "12 Mb/s";
279 }
280
281 /* shows the device tree recursively */
282 void usb_show_tree_graph(struct usb_device *dev, char *pre)
283 {
284         int i, index;
285         int has_child, last_child;
286
287         index = strlen(pre);
288         printf(" %s", pre);
289         /* check if the device has connected children */
290         has_child = 0;
291         for (i = 0; i < dev->maxchild; i++) {
292                 if (dev->children[i] != NULL)
293                         has_child = 1;
294         }
295         /* check if we are the last one */
296         last_child = 1;
297         if (dev->parent != NULL) {
298                 for (i = 0; i < dev->parent->maxchild; i++) {
299                         /* search for children */
300                         if (dev->parent->children[i] == dev) {
301                                 /* found our pointer, see if we have a
302                                  * little sister
303                                  */
304                                 while (i++ < dev->parent->maxchild) {
305                                         if (dev->parent->children[i] != NULL) {
306                                                 /* found a sister */
307                                                 last_child = 0;
308                                                 break;
309                                         } /* if */
310                                 } /* while */
311                         } /* device found */
312                 } /* for all children of the parent */
313                 printf("\b+-");
314                 /* correct last child */
315                 if (last_child)
316                         pre[index-1] = ' ';
317         } /* if not root hub */
318         else
319                 printf(" ");
320         printf("%d ", dev->devnum);
321         pre[index++] = ' ';
322         pre[index++] = has_child ? '|' : ' ';
323         pre[index] = 0;
324         printf(" %s (%s, %dmA)\n", usb_get_class_desc(
325                                         dev->config.if_desc[0].desc.bInterfaceClass),
326                                         portspeed(dev->speed),
327                                         dev->config.desc.bMaxPower * 2);
328         if (strlen(dev->mf) || strlen(dev->prod) || strlen(dev->serial))
329                 printf(" %s  %s %s %s\n", pre, dev->mf, dev->prod, dev->serial);
330         printf(" %s\n", pre);
331         if (dev->maxchild > 0) {
332                 for (i = 0; i < dev->maxchild; i++) {
333                         if (dev->children[i] != NULL) {
334                                 usb_show_tree_graph(dev->children[i], pre);
335                                 pre[index] = 0;
336                         }
337                 }
338         }
339 }
340
341 /* main routine for the tree command */
342 void usb_show_tree(struct usb_device *dev)
343 {
344         char preamble[32];
345
346         memset(preamble, 0, 32);
347         usb_show_tree_graph(dev, &preamble[0]);
348 }
349
350
351 /******************************************************************************
352  * usb boot command intepreter. Derived from diskboot
353  */
354 #ifdef CONFIG_USB_STORAGE
355 int do_usbboot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
356 {
357         char *boot_device = NULL;
358         char *ep;
359         int dev, part = 1;
360         ulong addr, cnt;
361         disk_partition_t info;
362         image_header_t *hdr;
363         block_dev_desc_t *stor_dev;
364 #if defined(CONFIG_FIT)
365         const void *fit_hdr = NULL;
366 #endif
367
368         switch (argc) {
369         case 1:
370                 addr = CONFIG_SYS_LOAD_ADDR;
371                 boot_device = getenv("bootdevice");
372                 break;
373         case 2:
374                 addr = simple_strtoul(argv[1], NULL, 16);
375                 boot_device = getenv("bootdevice");
376                 break;
377         case 3:
378                 addr = simple_strtoul(argv[1], NULL, 16);
379                 boot_device = argv[2];
380                 break;
381         default:
382                 return cmd_usage(cmdtp);
383         }
384
385         if (!boot_device) {
386                 puts("\n** No boot device **\n");
387                 return 1;
388         }
389
390         dev = simple_strtoul(boot_device, &ep, 16);
391         stor_dev = usb_stor_get_dev(dev);
392         if (stor_dev == NULL || stor_dev->type == DEV_TYPE_UNKNOWN) {
393                 printf("\n** Device %d not available\n", dev);
394                 return 1;
395         }
396         if (stor_dev->block_read == NULL) {
397                 printf("storage device not initialized. Use usb scan\n");
398                 return 1;
399         }
400         if (*ep) {
401                 if (*ep != ':') {
402                         puts("\n** Invalid boot device, use `dev[:part]' **\n");
403                         return 1;
404                 }
405                 part = simple_strtoul(++ep, NULL, 16);
406         }
407
408         if (get_partition_info(stor_dev, part, &info)) {
409                 /* try to boot raw .... */
410                 strncpy((char *)&info.type[0], BOOT_PART_TYPE,
411                         sizeof(BOOT_PART_TYPE));
412                 strncpy((char *)&info.name[0], "Raw", 4);
413                 info.start = 0;
414                 info.blksz = 0x200;
415                 info.size = 2880;
416                 printf("error reading partinfo...try to boot raw\n");
417         }
418         if ((strncmp((char *)info.type, BOOT_PART_TYPE,
419             sizeof(info.type)) != 0) &&
420             (strncmp((char *)info.type, BOOT_PART_COMP,
421             sizeof(info.type)) != 0)) {
422                 printf("\n** Invalid partition type \"%.32s\""
423                         " (expect \"" BOOT_PART_TYPE "\")\n",
424                         info.type);
425                 return 1;
426         }
427         printf("\nLoading from USB device %d, partition %d: "
428                 "Name: %.32s  Type: %.32s\n",
429                 dev, part, info.name, info.type);
430
431         debug("First Block: %ld,  # of blocks: %ld, Block Size: %ld\n",
432                 info.start, info.size, info.blksz);
433
434         if (stor_dev->block_read(dev, info.start, 1, (ulong *)addr) != 1) {
435                 printf("** Read error on %d:%d\n", dev, part);
436                 return 1;
437         }
438
439         switch (genimg_get_format((void *)addr)) {
440         case IMAGE_FORMAT_LEGACY:
441                 hdr = (image_header_t *)addr;
442
443                 if (!image_check_hcrc(hdr)) {
444                         puts("\n** Bad Header Checksum **\n");
445                         return 1;
446                 }
447
448                 image_print_contents(hdr);
449
450                 cnt = image_get_image_size(hdr);
451                 break;
452 #if defined(CONFIG_FIT)
453         case IMAGE_FORMAT_FIT:
454                 fit_hdr = (const void *)addr;
455                 puts("Fit image detected...\n");
456
457                 cnt = fit_get_size(fit_hdr);
458                 break;
459 #endif
460         default:
461                 puts("** Unknown image type\n");
462                 return 1;
463         }
464
465         cnt += info.blksz - 1;
466         cnt /= info.blksz;
467         cnt -= 1;
468
469         if (stor_dev->block_read(dev, info.start+1, cnt,
470                       (ulong *)(addr+info.blksz)) != cnt) {
471                 printf("\n** Read error on %d:%d\n", dev, part);
472                 return 1;
473         }
474
475 #if defined(CONFIG_FIT)
476         /* This cannot be done earlier, we need complete FIT image in RAM
477          * first
478          */
479         if (genimg_get_format((void *)addr) == IMAGE_FORMAT_FIT) {
480                 if (!fit_check_format(fit_hdr)) {
481                         puts("** Bad FIT image format\n");
482                         return 1;
483                 }
484                 fit_print_contents(fit_hdr);
485         }
486 #endif
487
488         /* Loading ok, update default load address */
489         load_addr = addr;
490
491         flush_cache(addr, (cnt+1)*info.blksz);
492
493         return bootm_maybe_autostart(cmdtp, argv[0]);
494 }
495 #endif /* CONFIG_USB_STORAGE */
496
497
498 /******************************************************************************
499  * usb command intepreter
500  */
501 int do_usb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
502 {
503
504         int i;
505         struct usb_device *dev = NULL;
506         extern char usb_started;
507 #ifdef CONFIG_USB_STORAGE
508         block_dev_desc_t *stor_dev;
509 #endif
510
511         if (argc < 2)
512                 return cmd_usage(cmdtp);
513
514         if ((strncmp(argv[1], "reset", 5) == 0) ||
515                  (strncmp(argv[1], "start", 5) == 0)) {
516                 usb_stop();
517                 printf("(Re)start USB...\n");
518                 i = usb_init();
519                 if (i >= 0) {
520 #ifdef CONFIG_USB_STORAGE
521                         /* try to recognize storage devices immediately */
522                         usb_stor_curr_dev = usb_stor_scan(1);
523 #endif
524 #ifdef CONFIG_USB_HOST_ETHER
525                         /* try to recognize ethernet devices immediately */
526                         usb_ether_curr_dev = usb_host_eth_scan(1);
527 #endif
528                 }
529                 return 0;
530         }
531         if (strncmp(argv[1], "stop", 4) == 0) {
532 #ifdef CONFIG_USB_KEYBOARD
533                 if (argc == 2) {
534                         if (usb_kbd_deregister() != 0) {
535                                 printf("USB not stopped: usbkbd still"
536                                         " using USB\n");
537                                 return 1;
538                         }
539                 } else {
540                         /* forced stop, switch console in to serial */
541                         console_assign(stdin, "serial");
542                         usb_kbd_deregister();
543                 }
544 #endif
545                 printf("stopping USB..\n");
546                 usb_stop();
547                 return 0;
548         }
549         if (!usb_started) {
550                 printf("USB is stopped. Please issue 'usb start' first.\n");
551                 return 1;
552         }
553         if (strncmp(argv[1], "tree", 4) == 0) {
554                 printf("\nDevice Tree:\n");
555                 usb_show_tree(usb_get_dev_index(0));
556                 return 0;
557         }
558         if (strncmp(argv[1], "inf", 3) == 0) {
559                 int d;
560                 if (argc == 2) {
561                         for (d = 0; d < USB_MAX_DEVICE; d++) {
562                                 dev = usb_get_dev_index(d);
563                                 if (dev == NULL)
564                                         break;
565                                 usb_display_desc(dev);
566                                 usb_display_config(dev);
567                         }
568                         return 0;
569                 } else {
570                         int d;
571
572                         i = simple_strtoul(argv[2], NULL, 16);
573                         printf("config for device %d\n", i);
574                         for (d = 0; d < USB_MAX_DEVICE; d++) {
575                                 dev = usb_get_dev_index(d);
576                                 if (dev == NULL)
577                                         break;
578                                 if (dev->devnum == i)
579                                         break;
580                         }
581                         if (dev == NULL) {
582                                 printf("*** No device available ***\n");
583                                 return 0;
584                         } else {
585                                 usb_display_desc(dev);
586                                 usb_display_config(dev);
587                         }
588                 }
589                 return 0;
590         }
591 #ifdef CONFIG_USB_STORAGE
592         if (strncmp(argv[1], "stor", 4) == 0)
593                 return usb_stor_info();
594
595         if (strncmp(argv[1], "part", 4) == 0) {
596                 int devno, ok = 0;
597                 if (argc == 2) {
598                         for (devno = 0; ; ++devno) {
599                                 stor_dev = usb_stor_get_dev(devno);
600                                 if (stor_dev == NULL)
601                                         break;
602                                 if (stor_dev->type != DEV_TYPE_UNKNOWN) {
603                                         ok++;
604                                         if (devno)
605                                                 printf("\n");
606                                         debug("print_part of %x\n", devno);
607                                         print_part(stor_dev);
608                                 }
609                         }
610                 } else {
611                         devno = simple_strtoul(argv[2], NULL, 16);
612                         stor_dev = usb_stor_get_dev(devno);
613                         if (stor_dev != NULL &&
614                             stor_dev->type != DEV_TYPE_UNKNOWN) {
615                                 ok++;
616                                 debug("print_part of %x\n", devno);
617                                 print_part(stor_dev);
618                         }
619                 }
620                 if (!ok) {
621                         printf("\nno USB devices available\n");
622                         return 1;
623                 }
624                 return 0;
625         }
626         if (strcmp(argv[1], "read") == 0) {
627                 if (usb_stor_curr_dev < 0) {
628                         printf("no current device selected\n");
629                         return 1;
630                 }
631                 if (argc == 5) {
632                         unsigned long addr = simple_strtoul(argv[2], NULL, 16);
633                         unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
634                         unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
635                         unsigned long n;
636                         printf("\nUSB read: device %d block # %ld, count %ld"
637                                 " ... ", usb_stor_curr_dev, blk, cnt);
638                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
639                         n = stor_dev->block_read(usb_stor_curr_dev, blk, cnt,
640                                                  (ulong *)addr);
641                         printf("%ld blocks read: %s\n", n,
642                                 (n == cnt) ? "OK" : "ERROR");
643                         if (n == cnt)
644                                 return 0;
645                         return 1;
646                 }
647         }
648         if (strcmp(argv[1], "write") == 0) {
649                 if (usb_stor_curr_dev < 0) {
650                         printf("no current device selected\n");
651                         return 1;
652                 }
653                 if (argc == 5) {
654                         unsigned long addr = simple_strtoul(argv[2], NULL, 16);
655                         unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
656                         unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
657                         unsigned long n;
658                         printf("\nUSB write: device %d block # %ld, count %ld"
659                                 " ... ", usb_stor_curr_dev, blk, cnt);
660                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
661                         n = stor_dev->block_write(usb_stor_curr_dev, blk, cnt,
662                                                 (ulong *)addr);
663                         printf("%ld blocks write: %s\n", n,
664                                 (n == cnt) ? "OK" : "ERROR");
665                         if (n == cnt)
666                                 return 0;
667                         return 1;
668                 }
669         }
670         if (strncmp(argv[1], "dev", 3) == 0) {
671                 if (argc == 3) {
672                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
673                         printf("\nUSB device %d: ", dev);
674                         stor_dev = usb_stor_get_dev(dev);
675                         if (stor_dev == NULL) {
676                                 printf("unknown device\n");
677                                 return 1;
678                         }
679                         printf("\n    Device %d: ", dev);
680                         dev_print(stor_dev);
681                         if (stor_dev->type == DEV_TYPE_UNKNOWN)
682                                 return 1;
683                         usb_stor_curr_dev = dev;
684                         printf("... is now current device\n");
685                         return 0;
686                 } else {
687                         printf("\nUSB device %d: ", usb_stor_curr_dev);
688                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
689                         dev_print(stor_dev);
690                         if (stor_dev->type == DEV_TYPE_UNKNOWN)
691                                 return 1;
692                         return 0;
693                 }
694                 return 0;
695         }
696 #endif /* CONFIG_USB_STORAGE */
697         return cmd_usage(cmdtp);
698 }
699
700 #ifdef CONFIG_USB_STORAGE
701 U_BOOT_CMD(
702         usb,    5,      1,      do_usb,
703         "USB sub-system",
704         "start - start (scan) USB controller\n"
705         "usb reset - reset (rescan) USB controller\n"
706         "usb stop [f] - stop USB [f]=force stop\n"
707         "usb tree - show USB device tree\n"
708         "usb info [dev] - show available USB devices\n"
709         "usb storage - show details of USB storage devices\n"
710         "usb dev [dev] - show or set current USB storage device\n"
711         "usb part [dev] - print partition table of one or all USB storage"
712         " devices\n"
713         "usb read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
714         "    to memory address `addr'\n"
715         "usb write addr blk# cnt - write `cnt' blocks starting at block `blk#'\n"
716         "    from memory address `addr'"
717 );
718
719
720 U_BOOT_CMD(
721         usbboot,        3,      1,      do_usbboot,
722         "boot from USB device",
723         "loadAddr dev:part"
724 );
725
726 #else
727 U_BOOT_CMD(
728         usb,    5,      1,      do_usb,
729         "USB sub-system",
730         "start - start (scan) USB controller\n"
731         "usb reset - reset (rescan) USB controller\n"
732         "usb tree - show USB device tree\n"
733         "usb info [dev] - show available USB devices"
734 );
735 #endif