cmd_usb.c: show cmd usage if no args given
[karo-tx-uboot.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 <part.h>
32 #include <usb.h>
33
34 #ifdef CONFIG_USB_STORAGE
35 static int usb_stor_curr_dev = -1; /* current device */
36 #endif
37
38 /* some display routines (info command) */
39 char *usb_get_class_desc(unsigned char dclass)
40 {
41         switch (dclass) {
42         case USB_CLASS_PER_INTERFACE:
43                 return "See Interface";
44         case USB_CLASS_AUDIO:
45                 return "Audio";
46         case USB_CLASS_COMM:
47                 return "Communication";
48         case USB_CLASS_HID:
49                 return "Human Interface";
50         case USB_CLASS_PRINTER:
51                 return "Printer";
52         case USB_CLASS_MASS_STORAGE:
53                 return "Mass Storage";
54         case USB_CLASS_HUB:
55                 return "Hub";
56         case USB_CLASS_DATA:
57                 return "CDC Data";
58         case USB_CLASS_VENDOR_SPEC:
59                 return "Vendor specific";
60         default:
61                 return "";
62         }
63 }
64
65 void usb_display_class_sub(unsigned char dclass, unsigned char subclass,
66                            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                                 break;
93                         }
94                         break;
95                 default:
96                         printf("reserved");
97                         break;
98                 }
99                 break;
100         case USB_CLASS_MASS_STORAGE:
101                 printf("Mass Storage, ");
102                 switch (subclass) {
103                 case US_SC_RBC:
104                         printf("RBC ");
105                         break;
106                 case US_SC_8020:
107                         printf("SFF-8020i (ATAPI)");
108                         break;
109                 case US_SC_QIC:
110                         printf("QIC-157 (Tape)");
111                         break;
112                 case US_SC_UFI:
113                         printf("UFI");
114                         break;
115                 case US_SC_8070:
116                         printf("SFF-8070");
117                         break;
118                 case US_SC_SCSI:
119                         printf("Transp. SCSI");
120                         break;
121                 default:
122                         printf("reserved");
123                         break;
124                 }
125                 printf(", ");
126                 switch (proto) {
127                 case US_PR_CB:
128                         printf("Command/Bulk");
129                         break;
130                 case US_PR_CBI:
131                         printf("Command/Bulk/Int");
132                         break;
133                 case US_PR_BULK:
134                         printf("Bulk only");
135                         break;
136                 default:
137                         printf("reserved");
138                         break;
139                 }
140                 break;
141         default:
142                 printf("%s", usb_get_class_desc(dclass));
143                 break;
144         }
145 }
146
147 void usb_display_string(struct usb_device *dev, int index)
148 {
149         char buffer[256];
150         if (index != 0) {
151                 if (usb_string(dev, index, &buffer[0], 256) > 0)
152                         printf("String: \"%s\"", buffer);
153         }
154 }
155
156 void usb_display_desc(struct usb_device *dev)
157 {
158         if (dev->descriptor.bDescriptorType == USB_DT_DEVICE) {
159                 printf("%d: %s,  USB Revision %x.%x\n", dev->devnum,
160                 usb_get_class_desc(dev->config.if_desc[0].desc.bInterfaceClass),
161                                    (dev->descriptor.bcdUSB>>8) & 0xff,
162                                    dev->descriptor.bcdUSB & 0xff);
163
164                 if (strlen(dev->mf) || strlen(dev->prod) ||
165                     strlen(dev->serial))
166                         printf(" - %s %s %s\n", dev->mf, dev->prod,
167                                 dev->serial);
168                 if (dev->descriptor.bDeviceClass) {
169                         printf(" - Class: ");
170                         usb_display_class_sub(dev->descriptor.bDeviceClass,
171                                               dev->descriptor.bDeviceSubClass,
172                                               dev->descriptor.bDeviceProtocol);
173                         printf("\n");
174                 } else {
175                         printf(" - Class: (from Interface) %s\n",
176                                usb_get_class_desc(
177                                 dev->config.if_desc[0].desc.bInterfaceClass));
178                 }
179                 printf(" - PacketSize: %d  Configurations: %d\n",
180                         dev->descriptor.bMaxPacketSize0,
181                         dev->descriptor.bNumConfigurations);
182                 printf(" - Vendor: 0x%04x  Product 0x%04x Version %d.%d\n",
183                         dev->descriptor.idVendor, dev->descriptor.idProduct,
184                         (dev->descriptor.bcdDevice>>8) & 0xff,
185                         dev->descriptor.bcdDevice & 0xff);
186         }
187
188 }
189
190 void usb_display_conf_desc(struct usb_configuration_descriptor *config,
191                            struct usb_device *dev)
192 {
193         printf("   Configuration: %d\n", config->bConfigurationValue);
194         printf("   - Interfaces: %d %s%s%dmA\n", config->bNumInterfaces,
195                (config->bmAttributes & 0x40) ? "Self Powered " : "Bus Powered ",
196                (config->bmAttributes & 0x20) ? "Remote Wakeup " : "",
197                 config->bMaxPower*2);
198         if (config->iConfiguration) {
199                 printf("   - ");
200                 usb_display_string(dev, config->iConfiguration);
201                 printf("\n");
202         }
203 }
204
205 void usb_display_if_desc(struct usb_interface_descriptor *ifdesc,
206                          struct usb_device *dev)
207 {
208         printf("     Interface: %d\n", ifdesc->bInterfaceNumber);
209         printf("     - Alternate Setting %d, Endpoints: %d\n",
210                 ifdesc->bAlternateSetting, ifdesc->bNumEndpoints);
211         printf("     - Class ");
212         usb_display_class_sub(ifdesc->bInterfaceClass,
213                 ifdesc->bInterfaceSubClass, ifdesc->bInterfaceProtocol);
214         printf("\n");
215         if (ifdesc->iInterface) {
216                 printf("     - ");
217                 usb_display_string(dev, ifdesc->iInterface);
218                 printf("\n");
219         }
220 }
221
222 void usb_display_ep_desc(struct usb_endpoint_descriptor *epdesc)
223 {
224         printf("     - Endpoint %d %s ", epdesc->bEndpointAddress & 0xf,
225                 (epdesc->bEndpointAddress & 0x80) ? "In" : "Out");
226         switch ((epdesc->bmAttributes & 0x03)) {
227         case 0:
228                 printf("Control");
229                 break;
230         case 1:
231                 printf("Isochronous");
232                 break;
233         case 2:
234                 printf("Bulk");
235                 break;
236         case 3:
237                 printf("Interrupt");
238                 break;
239         }
240         printf(" MaxPacket %d", epdesc->wMaxPacketSize);
241         if ((epdesc->bmAttributes & 0x03) == 0x3)
242                 printf(" Interval %dms", epdesc->bInterval);
243         printf("\n");
244 }
245
246 /* main routine to diasplay the configs, interfaces and endpoints */
247 void usb_display_config(struct usb_device *dev)
248 {
249         struct usb_config *config;
250         struct usb_interface *ifdesc;
251         struct usb_endpoint_descriptor *epdesc;
252         int i, ii;
253
254         config = &dev->config;
255         usb_display_conf_desc(&config->desc, dev);
256         for (i = 0; i < config->no_of_if; i++) {
257                 ifdesc = &config->if_desc[i];
258                 usb_display_if_desc(&ifdesc->desc, dev);
259                 for (ii = 0; ii < ifdesc->no_of_ep; ii++) {
260                         epdesc = &ifdesc->ep_desc[ii];
261                         usb_display_ep_desc(epdesc);
262                 }
263         }
264         printf("\n");
265 }
266
267 static inline char *portspeed(int speed)
268 {
269         if (speed == USB_SPEED_HIGH)
270                 return "480 Mb/s";
271         else if (speed == USB_SPEED_LOW)
272                 return "1.5 Mb/s";
273         else
274                 return "12 Mb/s";
275 }
276
277 /* shows the device tree recursively */
278 void usb_show_tree_graph(struct usb_device *dev, char *pre)
279 {
280         int i, index;
281         int has_child, last_child, port;
282
283         index = strlen(pre);
284         printf(" %s", pre);
285         /* check if the device has connected children */
286         has_child = 0;
287         for (i = 0; i < dev->maxchild; i++) {
288                 if (dev->children[i] != NULL)
289                         has_child = 1;
290         }
291         /* check if we are the last one */
292         last_child = 1;
293         if (dev->parent != NULL) {
294                 for (i = 0; i < dev->parent->maxchild; i++) {
295                         /* search for children */
296                         if (dev->parent->children[i] == dev) {
297                                 /* found our pointer, see if we have a
298                                  * little sister
299                                  */
300                                 port = i;
301                                 while (i++ < dev->parent->maxchild) {
302                                         if (dev->parent->children[i] != NULL) {
303                                                 /* found a sister */
304                                                 last_child = 0;
305                                                 break;
306                                         } /* if */
307                                 } /* while */
308                         } /* device found */
309                 } /* for all children of the parent */
310                 printf("\b+-");
311                 /* correct last child */
312                 if (last_child)
313                         pre[index-1] = ' ';
314         } /* if not root hub */
315         else
316                 printf(" ");
317         printf("%d ", dev->devnum);
318         pre[index++] = ' ';
319         pre[index++] = has_child ? '|' : ' ';
320         pre[index] = 0;
321         printf(" %s (%s, %dmA)\n", usb_get_class_desc(
322                                         dev->config.if_desc[0].desc.bInterfaceClass),
323                                         portspeed(dev->speed),
324                                         dev->config.desc.bMaxPower * 2);
325         if (strlen(dev->mf) || strlen(dev->prod) || strlen(dev->serial))
326                 printf(" %s  %s %s %s\n", pre, dev->mf, dev->prod, dev->serial);
327         printf(" %s\n", pre);
328         if (dev->maxchild > 0) {
329                 for (i = 0; i < dev->maxchild; i++) {
330                         if (dev->children[i] != NULL) {
331                                 usb_show_tree_graph(dev->children[i], pre);
332                                 pre[index] = 0;
333                         }
334                 }
335         }
336 }
337
338 /* main routine for the tree command */
339 void usb_show_tree(struct usb_device *dev)
340 {
341         char preamble[32];
342
343         memset(preamble, 0, 32);
344         usb_show_tree_graph(dev, &preamble[0]);
345 }
346
347
348 /******************************************************************************
349  * usb boot command intepreter. Derived from diskboot
350  */
351 #ifdef CONFIG_USB_STORAGE
352 int do_usbboot(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
353 {
354         char *boot_device = NULL;
355         char *ep;
356         int dev, part = 1, rcode;
357         ulong addr, cnt;
358         disk_partition_t info;
359         image_header_t *hdr;
360         block_dev_desc_t *stor_dev;
361 #if defined(CONFIG_FIT)
362         const void *fit_hdr = NULL;
363 #endif
364
365         switch (argc) {
366         case 1:
367                 addr = CONFIG_SYS_LOAD_ADDR;
368                 boot_device = getenv("bootdevice");
369                 break;
370         case 2:
371                 addr = simple_strtoul(argv[1], NULL, 16);
372                 boot_device = getenv("bootdevice");
373                 break;
374         case 3:
375                 addr = simple_strtoul(argv[1], NULL, 16);
376                 boot_device = argv[2];
377                 break;
378         default:
379                 cmd_usage(cmdtp);
380                 return 1;
381         }
382
383         if (!boot_device) {
384                 puts("\n** No boot device **\n");
385                 return 1;
386         }
387
388         dev = simple_strtoul(boot_device, &ep, 16);
389         stor_dev = usb_stor_get_dev(dev);
390         if (stor_dev == NULL || stor_dev->type == DEV_TYPE_UNKNOWN) {
391                 printf("\n** Device %d not available\n", dev);
392                 return 1;
393         }
394         if (stor_dev->block_read == NULL) {
395                 printf("storage device not initialized. Use usb scan\n");
396                 return 1;
397         }
398         if (*ep) {
399                 if (*ep != ':') {
400                         puts("\n** Invalid boot device, use `dev[:part]' **\n");
401                         return 1;
402                 }
403                 part = simple_strtoul(++ep, NULL, 16);
404         }
405
406         if (get_partition_info(stor_dev, part, &info)) {
407                 /* try to boot raw .... */
408                 strncpy((char *)&info.type[0], BOOT_PART_TYPE,
409                         sizeof(BOOT_PART_TYPE));
410                 strncpy((char *)&info.name[0], "Raw", 4);
411                 info.start = 0;
412                 info.blksz = 0x200;
413                 info.size = 2880;
414                 printf("error reading partinfo...try to boot raw\n");
415         }
416         if ((strncmp((char *)info.type, BOOT_PART_TYPE,
417             sizeof(info.type)) != 0) &&
418             (strncmp((char *)info.type, BOOT_PART_COMP,
419             sizeof(info.type)) != 0)) {
420                 printf("\n** Invalid partition type \"%.32s\""
421                         " (expect \"" BOOT_PART_TYPE "\")\n",
422                         info.type);
423                 return 1;
424         }
425         printf("\nLoading from USB device %d, partition %d: "
426                 "Name: %.32s  Type: %.32s\n",
427                 dev, part, info.name, info.type);
428
429         debug("First Block: %ld,  # of blocks: %ld, Block Size: %ld\n",
430                 info.start, info.size, info.blksz);
431
432         if (stor_dev->block_read(dev, info.start, 1, (ulong *)addr) != 1) {
433                 printf("** Read error on %d:%d\n", dev, part);
434                 return 1;
435         }
436
437         switch (genimg_get_format((void *)addr)) {
438         case IMAGE_FORMAT_LEGACY:
439                 hdr = (image_header_t *)addr;
440
441                 if (!image_check_hcrc(hdr)) {
442                         puts("\n** Bad Header Checksum **\n");
443                         return 1;
444                 }
445
446                 image_print_contents(hdr);
447
448                 cnt = image_get_image_size(hdr);
449                 break;
450 #if defined(CONFIG_FIT)
451         case IMAGE_FORMAT_FIT:
452                 fit_hdr = (const void *)addr;
453                 puts("Fit image detected...\n");
454
455                 cnt = fit_get_size(fit_hdr);
456                 break;
457 #endif
458         default:
459                 puts("** Unknown image type\n");
460                 return 1;
461         }
462
463         cnt += info.blksz - 1;
464         cnt /= info.blksz;
465         cnt -= 1;
466
467         if (stor_dev->block_read(dev, info.start+1, cnt,
468                       (ulong *)(addr+info.blksz)) != cnt) {
469                 printf("\n** Read error on %d:%d\n", dev, part);
470                 return 1;
471         }
472
473 #if defined(CONFIG_FIT)
474         /* This cannot be done earlier, we need complete FIT image in RAM
475          * first
476          */
477         if (genimg_get_format((void *)addr) == IMAGE_FORMAT_FIT) {
478                 if (!fit_check_format(fit_hdr)) {
479                         puts("** Bad FIT image format\n");
480                         return 1;
481                 }
482                 fit_print_contents(fit_hdr);
483         }
484 #endif
485
486         /* Loading ok, update default load address */
487         load_addr = addr;
488
489         flush_cache(addr, (cnt+1)*info.blksz);
490
491         /* Check if we should attempt an auto-start */
492         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
493                 char *local_args[2];
494                 extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
495                 local_args[0] = argv[0];
496                 local_args[1] = NULL;
497                 printf("Automatic boot of image at addr 0x%08lX ...\n", addr);
498                 rcode = do_bootm(cmdtp, 0, 1, local_args);
499                 return rcode;
500         }
501         return 0;
502 }
503 #endif /* CONFIG_USB_STORAGE */
504
505
506 /******************************************************************************
507  * usb command intepreter
508  */
509 int do_usb(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
510 {
511
512         int i;
513         struct usb_device *dev = NULL;
514         extern char usb_started;
515 #ifdef CONFIG_USB_STORAGE
516         block_dev_desc_t *stor_dev;
517 #endif
518
519         if (argc < 2) {
520                 cmd_usage(cmdtp);
521                 return 1;
522         }
523
524         if ((strncmp(argv[1], "reset", 5) == 0) ||
525                  (strncmp(argv[1], "start", 5) == 0)) {
526                 usb_stop();
527                 printf("(Re)start USB...\n");
528                 i = usb_init();
529 #ifdef CONFIG_USB_STORAGE
530                 /* try to recognize storage devices immediately */
531                 if (i >= 0)
532                         usb_stor_curr_dev = usb_stor_scan(1);
533 #endif
534                 return 0;
535         }
536         if (strncmp(argv[1], "stop", 4) == 0) {
537 #ifdef CONFIG_USB_KEYBOARD
538                 if (argc == 2) {
539                         if (usb_kbd_deregister() != 0) {
540                                 printf("USB not stopped: usbkbd still"
541                                         " using USB\n");
542                                 return 1;
543                         }
544                 } else {
545                         /* forced stop, switch console in to serial */
546                         console_assign(stdin, "serial");
547                         usb_kbd_deregister();
548                 }
549 #endif
550                 printf("stopping USB..\n");
551                 usb_stop();
552                 return 0;
553         }
554         if (!usb_started) {
555                 printf("USB is stopped. Please issue 'usb start' first.\n");
556                 return 1;
557         }
558         if (strncmp(argv[1], "tree", 4) == 0) {
559                 printf("\nDevice Tree:\n");
560                 usb_show_tree(usb_get_dev_index(0));
561                 return 0;
562         }
563         if (strncmp(argv[1], "inf", 3) == 0) {
564                 int d;
565                 if (argc == 2) {
566                         for (d = 0; d < USB_MAX_DEVICE; d++) {
567                                 dev = usb_get_dev_index(d);
568                                 if (dev == NULL)
569                                         break;
570                                 usb_display_desc(dev);
571                                 usb_display_config(dev);
572                         }
573                         return 0;
574                 } else {
575                         int d;
576
577                         i = simple_strtoul(argv[2], NULL, 16);
578                         printf("config for device %d\n", i);
579                         for (d = 0; d < USB_MAX_DEVICE; d++) {
580                                 dev = usb_get_dev_index(d);
581                                 if (dev == NULL)
582                                         break;
583                                 if (dev->devnum == i)
584                                         break;
585                         }
586                         if (dev == NULL) {
587                                 printf("*** NO Device avaiable ***\n");
588                                 return 0;
589                         } else {
590                                 usb_display_desc(dev);
591                                 usb_display_config(dev);
592                         }
593                 }
594                 return 0;
595         }
596 #ifdef CONFIG_USB_STORAGE
597         if (strncmp(argv[1], "stor", 4) == 0)
598                 return usb_stor_info();
599
600         if (strncmp(argv[1], "part", 4) == 0) {
601                 int devno, ok = 0;
602                 if (argc == 2) {
603                         for (devno = 0; ; ++devno) {
604                                 stor_dev = usb_stor_get_dev(devno);
605                                 if (stor_dev == NULL)
606                                         break;
607                                 if (stor_dev->type != DEV_TYPE_UNKNOWN) {
608                                         ok++;
609                                         if (devno)
610                                                 printf("\n");
611                                         debug("print_part of %x\n", devno);
612                                         print_part(stor_dev);
613                                 }
614                         }
615                 } else {
616                         devno = simple_strtoul(argv[2], NULL, 16);
617                         stor_dev = usb_stor_get_dev(devno);
618                         if (stor_dev != NULL &&
619                             stor_dev->type != DEV_TYPE_UNKNOWN) {
620                                 ok++;
621                                 debug("print_part of %x\n", devno);
622                                 print_part(stor_dev);
623                         }
624                 }
625                 if (!ok) {
626                         printf("\nno USB devices available\n");
627                         return 1;
628                 }
629                 return 0;
630         }
631         if (strcmp(argv[1], "read") == 0) {
632                 if (usb_stor_curr_dev < 0) {
633                         printf("no current device selected\n");
634                         return 1;
635                 }
636                 if (argc == 5) {
637                         unsigned long addr = simple_strtoul(argv[2], NULL, 16);
638                         unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
639                         unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
640                         unsigned long n;
641                         printf("\nUSB read: device %d block # %ld, count %ld"
642                                 " ... ", usb_stor_curr_dev, blk, cnt);
643                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
644                         n = stor_dev->block_read(usb_stor_curr_dev, blk, cnt,
645                                                  (ulong *)addr);
646                         printf("%ld blocks read: %s\n", n,
647                                 (n == cnt) ? "OK" : "ERROR");
648                         if (n == cnt)
649                                 return 0;
650                         return 1;
651                 }
652         }
653         if (strcmp(argv[1], "write") == 0) {
654                 if (usb_stor_curr_dev < 0) {
655                         printf("no current device selected\n");
656                         return 1;
657                 }
658                 if (argc == 5) {
659                         unsigned long addr = simple_strtoul(argv[2], NULL, 16);
660                         unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
661                         unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
662                         unsigned long n;
663                         printf("\nUSB write: device %d block # %ld, count %ld"
664                                 " ... ", usb_stor_curr_dev, blk, cnt);
665                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
666                         n = stor_dev->block_write(usb_stor_curr_dev, blk, cnt,
667                                                 (ulong *)addr);
668                         printf("%ld blocks write: %s\n", n,
669                                 (n == cnt) ? "OK" : "ERROR");
670                         if (n == cnt)
671                                 return 0;
672                         return 1;
673                 }
674         }
675         if (strncmp(argv[1], "dev", 3) == 0) {
676                 if (argc == 3) {
677                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
678                         printf("\nUSB device %d: ", dev);
679                         stor_dev = usb_stor_get_dev(dev);
680                         if (stor_dev == NULL) {
681                                 printf("unknown device\n");
682                                 return 1;
683                         }
684                         printf("\n    Device %d: ", dev);
685                         dev_print(stor_dev);
686                         if (stor_dev->type == DEV_TYPE_UNKNOWN)
687                                 return 1;
688                         usb_stor_curr_dev = dev;
689                         printf("... is now current device\n");
690                         return 0;
691                 } else {
692                         printf("\nUSB device %d: ", usb_stor_curr_dev);
693                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
694                         dev_print(stor_dev);
695                         if (stor_dev->type == DEV_TYPE_UNKNOWN)
696                                 return 1;
697                         return 0;
698                 }
699                 return 0;
700         }
701 #endif /* CONFIG_USB_STORAGE */
702         cmd_usage(cmdtp);
703         return 1;
704 }
705
706 #ifdef CONFIG_USB_STORAGE
707 U_BOOT_CMD(
708         usb,    5,      1,      do_usb,
709         "USB sub-system",
710         "reset - reset (rescan) USB controller\n"
711         "usb stop [f]  - stop USB [f]=force stop\n"
712         "usb tree  - show USB device tree\n"
713         "usb info [dev] - show available USB devices\n"
714         "usb storage  - show details of USB storage devices\n"
715         "usb dev [dev] - show or set current USB storage device\n"
716         "usb part [dev] - print partition table of one or all USB storage"
717         " devices\n"
718         "usb read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
719         "    to memory address `addr'"
720         "usb write addr blk# cnt - write `cnt' blocks starting at block `blk#'\n"
721         "    from memory address `addr'"
722 );
723
724
725 U_BOOT_CMD(
726         usbboot,        3,      1,      do_usbboot,
727         "boot from USB device",
728         "loadAddr dev:part"
729 );
730
731 #else
732 U_BOOT_CMD(
733         usb,    5,      1,      do_usb,
734         "USB sub-system",
735         "reset - reset (rescan) USB controller\n"
736         "usb  tree  - show USB device tree\n"
737         "usb  info [dev] - show available USB devices"
738 );
739 #endif