1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2001
4 * Denis Peter, MPL AG Switzerland
5 *
6 * Adapted for U-Boot driver model
7 * (C) Copyright 2015 Google, Inc
8 *
9 * Most of this source has been derived from the Linux USB
10 * project.
11 */
12
13 #include <common.h>
14 #include <blk.h>
15 #include <bootstage.h>
16 #include <command.h>
17 #include <console.h>
18 #include <dm.h>
19 #include <dm/uclass-internal.h>
20 #include <memalign.h>
21 #include <asm/byteorder.h>
22 #include <asm/unaligned.h>
23 #include <part.h>
24 #include <usb.h>
25
26 #ifdef CONFIG_USB_STORAGE
27 static int usb_stor_curr_dev = -1; /* current device */
28 #endif
29 #if defined(CONFIG_USB_HOST_ETHER) && !defined(CONFIG_DM_ETH)
30 static int __maybe_unused usb_ether_curr_dev = -1; /* current ethernet device */
31 #endif
32
33 /* some display routines (info command) */
usb_get_class_desc(unsigned char dclass)34 static char *usb_get_class_desc(unsigned char dclass)
35 {
36 switch (dclass) {
37 case USB_CLASS_PER_INTERFACE:
38 return "See Interface";
39 case USB_CLASS_AUDIO:
40 return "Audio";
41 case USB_CLASS_COMM:
42 return "Communication";
43 case USB_CLASS_HID:
44 return "Human Interface";
45 case USB_CLASS_PRINTER:
46 return "Printer";
47 case USB_CLASS_MASS_STORAGE:
48 return "Mass Storage";
49 case USB_CLASS_HUB:
50 return "Hub";
51 case USB_CLASS_DATA:
52 return "CDC Data";
53 case USB_CLASS_VENDOR_SPEC:
54 return "Vendor specific";
55 default:
56 return "";
57 }
58 }
59
usb_display_class_sub(unsigned char dclass,unsigned char subclass,unsigned char proto)60 static void usb_display_class_sub(unsigned char dclass, unsigned char subclass,
61 unsigned char proto)
62 {
63 switch (dclass) {
64 case USB_CLASS_PER_INTERFACE:
65 printf("See Interface");
66 break;
67 case USB_CLASS_HID:
68 printf("Human Interface, Subclass: ");
69 switch (subclass) {
70 case USB_SUB_HID_NONE:
71 printf("None");
72 break;
73 case USB_SUB_HID_BOOT:
74 printf("Boot ");
75 switch (proto) {
76 case USB_PROT_HID_NONE:
77 printf("None");
78 break;
79 case USB_PROT_HID_KEYBOARD:
80 printf("Keyboard");
81 break;
82 case USB_PROT_HID_MOUSE:
83 printf("Mouse");
84 break;
85 default:
86 printf("reserved");
87 break;
88 }
89 break;
90 default:
91 printf("reserved");
92 break;
93 }
94 break;
95 case USB_CLASS_MASS_STORAGE:
96 printf("Mass Storage, ");
97 switch (subclass) {
98 case US_SC_RBC:
99 printf("RBC ");
100 break;
101 case US_SC_8020:
102 printf("SFF-8020i (ATAPI)");
103 break;
104 case US_SC_QIC:
105 printf("QIC-157 (Tape)");
106 break;
107 case US_SC_UFI:
108 printf("UFI");
109 break;
110 case US_SC_8070:
111 printf("SFF-8070");
112 break;
113 case US_SC_SCSI:
114 printf("Transp. SCSI");
115 break;
116 default:
117 printf("reserved");
118 break;
119 }
120 printf(", ");
121 switch (proto) {
122 case US_PR_CB:
123 printf("Command/Bulk");
124 break;
125 case US_PR_CBI:
126 printf("Command/Bulk/Int");
127 break;
128 case US_PR_BULK:
129 printf("Bulk only");
130 break;
131 default:
132 printf("reserved");
133 break;
134 }
135 break;
136 default:
137 printf("%s", usb_get_class_desc(dclass));
138 break;
139 }
140 }
141
usb_display_string(struct usb_device * dev,int index)142 static void usb_display_string(struct usb_device *dev, int index)
143 {
144 ALLOC_CACHE_ALIGN_BUFFER(char, buffer, 256);
145
146 if (index != 0) {
147 if (usb_string(dev, index, &buffer[0], 256) > 0)
148 printf("String: \"%s\"", buffer);
149 }
150 }
151
usb_display_desc(struct usb_device * dev)152 static void usb_display_desc(struct usb_device *dev)
153 {
154 uint packet_size = dev->descriptor.bMaxPacketSize0;
155
156 if (dev->descriptor.bDescriptorType == USB_DT_DEVICE) {
157 printf("%d: %s, USB Revision %x.%x\n", dev->devnum,
158 usb_get_class_desc(dev->config.if_desc[0].desc.bInterfaceClass),
159 (dev->descriptor.bcdUSB>>8) & 0xff,
160 dev->descriptor.bcdUSB & 0xff);
161
162 if (strlen(dev->mf) || strlen(dev->prod) ||
163 strlen(dev->serial))
164 printf(" - %s %s %s\n", dev->mf, dev->prod,
165 dev->serial);
166 if (dev->descriptor.bDeviceClass) {
167 printf(" - Class: ");
168 usb_display_class_sub(dev->descriptor.bDeviceClass,
169 dev->descriptor.bDeviceSubClass,
170 dev->descriptor.bDeviceProtocol);
171 printf("\n");
172 } else {
173 printf(" - Class: (from Interface) %s\n",
174 usb_get_class_desc(
175 dev->config.if_desc[0].desc.bInterfaceClass));
176 }
177 if (dev->descriptor.bcdUSB >= cpu_to_le16(0x0300))
178 packet_size = 1 << packet_size;
179 printf(" - PacketSize: %d Configurations: %d\n",
180 packet_size, dev->descriptor.bNumConfigurations);
181 printf(" - Vendor: 0x%04x Product 0x%04x Version %d.%d\n",
182 dev->descriptor.idVendor, dev->descriptor.idProduct,
183 (dev->descriptor.bcdDevice>>8) & 0xff,
184 dev->descriptor.bcdDevice & 0xff);
185 }
186
187 }
188
usb_display_conf_desc(struct usb_config_descriptor * config,struct usb_device * dev)189 static void usb_display_conf_desc(struct usb_config_descriptor *config,
190 struct usb_device *dev)
191 {
192 printf(" Configuration: %d\n", config->bConfigurationValue);
193 printf(" - Interfaces: %d %s%s%dmA\n", config->bNumInterfaces,
194 (config->bmAttributes & 0x40) ? "Self Powered " : "Bus Powered ",
195 (config->bmAttributes & 0x20) ? "Remote Wakeup " : "",
196 config->bMaxPower*2);
197 if (config->iConfiguration) {
198 printf(" - ");
199 usb_display_string(dev, config->iConfiguration);
200 printf("\n");
201 }
202 }
203
usb_display_if_desc(struct usb_interface_descriptor * ifdesc,struct usb_device * dev)204 static void usb_display_if_desc(struct usb_interface_descriptor *ifdesc,
205 struct usb_device *dev)
206 {
207 printf(" Interface: %d\n", ifdesc->bInterfaceNumber);
208 printf(" - Alternate Setting %d, Endpoints: %d\n",
209 ifdesc->bAlternateSetting, ifdesc->bNumEndpoints);
210 printf(" - Class ");
211 usb_display_class_sub(ifdesc->bInterfaceClass,
212 ifdesc->bInterfaceSubClass, ifdesc->bInterfaceProtocol);
213 printf("\n");
214 if (ifdesc->iInterface) {
215 printf(" - ");
216 usb_display_string(dev, ifdesc->iInterface);
217 printf("\n");
218 }
219 }
220
usb_display_ep_desc(struct usb_endpoint_descriptor * epdesc)221 static void usb_display_ep_desc(struct usb_endpoint_descriptor *epdesc)
222 {
223 printf(" - Endpoint %d %s ", epdesc->bEndpointAddress & 0xf,
224 (epdesc->bEndpointAddress & 0x80) ? "In" : "Out");
225 switch ((epdesc->bmAttributes & 0x03)) {
226 case 0:
227 printf("Control");
228 break;
229 case 1:
230 printf("Isochronous");
231 break;
232 case 2:
233 printf("Bulk");
234 break;
235 case 3:
236 printf("Interrupt");
237 break;
238 }
239 printf(" MaxPacket %d", get_unaligned(&epdesc->wMaxPacketSize));
240 if ((epdesc->bmAttributes & 0x03) == 0x3)
241 printf(" Interval %dms", epdesc->bInterval);
242 printf("\n");
243 }
244
245 /* main routine to diasplay the configs, interfaces and endpoints */
usb_display_config(struct usb_device * dev)246 static void usb_display_config(struct usb_device *dev)
247 {
248 struct usb_config *config;
249 struct usb_interface *ifdesc;
250 struct usb_endpoint_descriptor *epdesc;
251 int i, ii;
252
253 config = &dev->config;
254 usb_display_conf_desc(&config->desc, dev);
255 for (i = 0; i < config->no_of_if; i++) {
256 ifdesc = &config->if_desc[i];
257 usb_display_if_desc(&ifdesc->desc, dev);
258 for (ii = 0; ii < ifdesc->no_of_ep; ii++) {
259 epdesc = &ifdesc->ep_desc[ii];
260 usb_display_ep_desc(epdesc);
261 }
262 }
263 printf("\n");
264 }
265
266 /*
267 * With driver model this isn't right since we can have multiple controllers
268 * and the device numbering starts at 1 on each bus.
269 * TODO(sjg@chromium.org): Add a way to specify the controller/bus.
270 */
usb_find_device(int devnum)271 static struct usb_device *usb_find_device(int devnum)
272 {
273 #ifdef CONFIG_DM_USB
274 struct usb_device *udev;
275 struct udevice *hub;
276 struct uclass *uc;
277 int ret;
278
279 /* Device addresses start at 1 */
280 devnum++;
281 ret = uclass_get(UCLASS_USB_HUB, &uc);
282 if (ret)
283 return NULL;
284
285 uclass_foreach_dev(hub, uc) {
286 struct udevice *dev;
287
288 if (!device_active(hub))
289 continue;
290 udev = dev_get_parent_priv(hub);
291 if (udev->devnum == devnum)
292 return udev;
293
294 for (device_find_first_child(hub, &dev);
295 dev;
296 device_find_next_child(&dev)) {
297 if (!device_active(hub))
298 continue;
299
300 udev = dev_get_parent_priv(dev);
301 if (udev->devnum == devnum)
302 return udev;
303 }
304 }
305 #else
306 struct usb_device *udev;
307 int d;
308
309 for (d = 0; d < USB_MAX_DEVICE; d++) {
310 udev = usb_get_dev_index(d);
311 if (udev == NULL)
312 return NULL;
313 if (udev->devnum == devnum)
314 return udev;
315 }
316 #endif
317
318 return NULL;
319 }
320
portspeed(int speed)321 static inline const char *portspeed(int speed)
322 {
323 switch (speed) {
324 case USB_SPEED_SUPER:
325 return "5 Gb/s";
326 case USB_SPEED_HIGH:
327 return "480 Mb/s";
328 case USB_SPEED_LOW:
329 return "1.5 Mb/s";
330 default:
331 return "12 Mb/s";
332 }
333 }
334
335 /* shows the device tree recursively */
usb_show_tree_graph(struct usb_device * dev,char * pre)336 static void usb_show_tree_graph(struct usb_device *dev, char *pre)
337 {
338 int index;
339 int has_child, last_child;
340
341 index = strlen(pre);
342 printf(" %s", pre);
343 #ifdef CONFIG_DM_USB
344 has_child = device_has_active_children(dev->dev);
345 if (device_get_uclass_id(dev->dev) == UCLASS_MASS_STORAGE) {
346 struct udevice *child;
347
348 for (device_find_first_child(dev->dev, &child);
349 child;
350 device_find_next_child(&child)) {
351 if (device_get_uclass_id(child) == UCLASS_BLK)
352 has_child = 0;
353 }
354 }
355 #else
356 /* check if the device has connected children */
357 int i;
358
359 has_child = 0;
360 for (i = 0; i < dev->maxchild; i++) {
361 if (dev->children[i] != NULL)
362 has_child = 1;
363 }
364 #endif
365 /* check if we are the last one */
366 #ifdef CONFIG_DM_USB
367 /* Not the root of the usb tree? */
368 if (device_get_uclass_id(dev->dev->parent) != UCLASS_USB) {
369 last_child = device_is_last_sibling(dev->dev);
370 #else
371 if (dev->parent != NULL) { /* not root? */
372 last_child = 1;
373 for (i = 0; i < dev->parent->maxchild; i++) {
374 /* search for children */
375 if (dev->parent->children[i] == dev) {
376 /* found our pointer, see if we have a
377 * little sister
378 */
379 while (i++ < dev->parent->maxchild) {
380 if (dev->parent->children[i] != NULL) {
381 /* found a sister */
382 last_child = 0;
383 break;
384 } /* if */
385 } /* while */
386 } /* device found */
387 } /* for all children of the parent */
388 #endif
389 printf("\b+-");
390 /* correct last child */
391 if (last_child && index)
392 pre[index-1] = ' ';
393 } /* if not root hub */
394 else
395 printf(" ");
396 printf("%d ", dev->devnum);
397 pre[index++] = ' ';
398 pre[index++] = has_child ? '|' : ' ';
399 pre[index] = 0;
400 printf(" %s (%s, %dmA)\n", usb_get_class_desc(
401 dev->config.if_desc[0].desc.bInterfaceClass),
402 portspeed(dev->speed),
403 dev->config.desc.bMaxPower * 2);
404 if (strlen(dev->mf) || strlen(dev->prod) || strlen(dev->serial))
405 printf(" %s %s %s %s\n", pre, dev->mf, dev->prod, dev->serial);
406 printf(" %s\n", pre);
407 #ifdef CONFIG_DM_USB
408 struct udevice *child;
409
410 for (device_find_first_child(dev->dev, &child);
411 child;
412 device_find_next_child(&child)) {
413 struct usb_device *udev;
414
415 if (!device_active(child))
416 continue;
417
418 udev = dev_get_parent_priv(child);
419
420 /*
421 * Ignore emulators and block child devices, we only want
422 * real devices
423 */
424 if ((device_get_uclass_id(child) != UCLASS_USB_EMUL) &&
425 (device_get_uclass_id(child) != UCLASS_BLK)) {
426 usb_show_tree_graph(udev, pre);
427 pre[index] = 0;
428 }
429 }
430 #else
431 if (dev->maxchild > 0) {
432 for (i = 0; i < dev->maxchild; i++) {
433 if (dev->children[i] != NULL) {
434 usb_show_tree_graph(dev->children[i], pre);
435 pre[index] = 0;
436 }
437 }
438 }
439 #endif
440 }
441
442 /* main routine for the tree command */
443 static void usb_show_subtree(struct usb_device *dev)
444 {
445 char preamble[32];
446
447 memset(preamble, '\0', sizeof(preamble));
448 usb_show_tree_graph(dev, &preamble[0]);
449 }
450
451 #ifdef CONFIG_DM_USB
452 typedef void (*usb_dev_func_t)(struct usb_device *udev);
453
454 static void usb_for_each_root_dev(usb_dev_func_t func)
455 {
456 struct udevice *bus;
457
458 for (uclass_find_first_device(UCLASS_USB, &bus);
459 bus;
460 uclass_find_next_device(&bus)) {
461 struct usb_device *udev;
462 struct udevice *dev;
463
464 if (!device_active(bus))
465 continue;
466
467 device_find_first_child(bus, &dev);
468 if (dev && device_active(dev)) {
469 udev = dev_get_parent_priv(dev);
470 func(udev);
471 }
472 }
473 }
474 #endif
475
476 void usb_show_tree(void)
477 {
478 #ifdef CONFIG_DM_USB
479 usb_for_each_root_dev(usb_show_subtree);
480 #else
481 struct usb_device *udev;
482 int i;
483
484 for (i = 0; i < USB_MAX_DEVICE; i++) {
485 udev = usb_get_dev_index(i);
486 if (udev == NULL)
487 break;
488 if (udev->parent == NULL)
489 usb_show_subtree(udev);
490 }
491 #endif
492 }
493
494 static int usb_test(struct usb_device *dev, int port, char* arg)
495 {
496 int mode;
497
498 if (port > dev->maxchild) {
499 printf("Device is no hub or does not have %d ports.\n", port);
500 return 1;
501 }
502
503 switch (arg[0]) {
504 case 'J':
505 case 'j':
506 printf("Setting Test_J mode");
507 mode = USB_TEST_MODE_J;
508 break;
509 case 'K':
510 case 'k':
511 printf("Setting Test_K mode");
512 mode = USB_TEST_MODE_K;
513 break;
514 case 'S':
515 case 's':
516 printf("Setting Test_SE0_NAK mode");
517 mode = USB_TEST_MODE_SE0_NAK;
518 break;
519 case 'P':
520 case 'p':
521 printf("Setting Test_Packet mode");
522 mode = USB_TEST_MODE_PACKET;
523 break;
524 case 'F':
525 case 'f':
526 printf("Setting Test_Force_Enable mode");
527 mode = USB_TEST_MODE_FORCE_ENABLE;
528 break;
529 default:
530 printf("Unrecognized test mode: %s\nAvailable modes: "
531 "J, K, S[E0_NAK], P[acket], F[orce_Enable]\n", arg);
532 return 1;
533 }
534
535 if (port)
536 printf(" on downstream facing port %d...\n", port);
537 else
538 printf(" on upstream facing port...\n");
539
540 if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_FEATURE,
541 port ? USB_RT_PORT : USB_RECIP_DEVICE,
542 port ? USB_PORT_FEAT_TEST : USB_FEAT_TEST,
543 (mode << 8) | port,
544 NULL, 0, USB_CNTL_TIMEOUT) == -1) {
545 printf("Error during SET_FEATURE.\n");
546 return 1;
547 } else {
548 printf("Test mode successfully set. Use 'usb start' "
549 "to return to normal operation.\n");
550 return 0;
551 }
552 }
553
554
555 /******************************************************************************
556 * usb boot command intepreter. Derived from diskboot
557 */
558 #ifdef CONFIG_USB_STORAGE
559 static int do_usbboot(struct cmd_tbl *cmdtp, int flag, int argc,
560 char *const argv[])
561 {
562 return common_diskboot(cmdtp, "usb", argc, argv);
563 }
564 #endif /* CONFIG_USB_STORAGE */
565
566 static int do_usb_stop_keyboard(int force)
567 {
568 #if !defined CONFIG_DM_USB && defined CONFIG_USB_KEYBOARD
569 if (usb_kbd_deregister(force) != 0) {
570 printf("USB not stopped: usbkbd still using USB\n");
571 return 1;
572 }
573 #endif
574 return 0;
575 }
576
577 static void do_usb_start(void)
578 {
579 bootstage_mark_name(BOOTSTAGE_ID_USB_START, "usb_start");
580
581 if (usb_init() < 0)
582 return;
583
584 /* Driver model will probe the devices as they are found */
585 # ifdef CONFIG_USB_STORAGE
586 /* try to recognize storage devices immediately */
587 usb_stor_curr_dev = usb_stor_scan(1);
588 # endif
589 #ifndef CONFIG_DM_USB
590 # ifdef CONFIG_USB_KEYBOARD
591 drv_usb_kbd_init();
592 # endif
593 #endif /* !CONFIG_DM_USB */
594 #ifdef CONFIG_USB_HOST_ETHER
595 # ifdef CONFIG_DM_ETH
596 # ifndef CONFIG_DM_USB
597 # error "You must use CONFIG_DM_USB if you want to use CONFIG_USB_HOST_ETHER with CONFIG_DM_ETH"
598 # endif
599 # else
600 /* try to recognize ethernet devices immediately */
601 usb_ether_curr_dev = usb_host_eth_scan(1);
602 # endif
603 #endif
604 }
605
606 #ifdef CONFIG_DM_USB
607 static void usb_show_info(struct usb_device *udev)
608 {
609 struct udevice *child;
610
611 usb_display_desc(udev);
612 usb_display_config(udev);
613 for (device_find_first_child(udev->dev, &child);
614 child;
615 device_find_next_child(&child)) {
616 if (device_active(child) &&
617 (device_get_uclass_id(child) != UCLASS_USB_EMUL) &&
618 (device_get_uclass_id(child) != UCLASS_BLK)) {
619 udev = dev_get_parent_priv(child);
620 usb_show_info(udev);
621 }
622 }
623 }
624 #endif
625
626 /******************************************************************************
627 * usb command intepreter
628 */
629 static int do_usb(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
630 {
631 struct usb_device *udev = NULL;
632 int i;
633 extern char usb_started;
634
635 if (argc < 2)
636 return CMD_RET_USAGE;
637
638 if (strncmp(argv[1], "start", 5) == 0) {
639 if (usb_started)
640 return 0; /* Already started */
641 printf("starting USB...\n");
642 do_usb_start();
643 return 0;
644 }
645
646 if (strncmp(argv[1], "reset", 5) == 0) {
647 printf("resetting USB...\n");
648 if (do_usb_stop_keyboard(1) != 0)
649 return 1;
650 usb_stop();
651 do_usb_start();
652 return 0;
653 }
654 if (strncmp(argv[1], "stop", 4) == 0) {
655 if (argc != 2)
656 console_assign(stdin, "serial");
657 if (do_usb_stop_keyboard(0) != 0)
658 return 1;
659 printf("stopping USB..\n");
660 usb_stop();
661 return 0;
662 }
663 if (!usb_started) {
664 printf("USB is stopped. Please issue 'usb start' first.\n");
665 return 1;
666 }
667 if (strncmp(argv[1], "tree", 4) == 0) {
668 puts("USB device tree:\n");
669 usb_show_tree();
670 return 0;
671 }
672 if (strncmp(argv[1], "inf", 3) == 0) {
673 if (argc == 2) {
674 #ifdef CONFIG_DM_USB
675 usb_for_each_root_dev(usb_show_info);
676 #else
677 int d;
678 for (d = 0; d < USB_MAX_DEVICE; d++) {
679 udev = usb_get_dev_index(d);
680 if (udev == NULL)
681 break;
682 usb_display_desc(udev);
683 usb_display_config(udev);
684 }
685 #endif
686 return 0;
687 } else {
688 /*
689 * With driver model this isn't right since we can
690 * have multiple controllers and the device numbering
691 * starts at 1 on each bus.
692 */
693 i = simple_strtoul(argv[2], NULL, 10);
694 printf("config for device %d\n", i);
695 udev = usb_find_device(i);
696 if (udev == NULL) {
697 printf("*** No device available ***\n");
698 return 0;
699 } else {
700 usb_display_desc(udev);
701 usb_display_config(udev);
702 }
703 }
704 return 0;
705 }
706 if (strncmp(argv[1], "test", 4) == 0) {
707 if (argc < 5)
708 return CMD_RET_USAGE;
709 i = simple_strtoul(argv[2], NULL, 10);
710 udev = usb_find_device(i);
711 if (udev == NULL) {
712 printf("Device %d does not exist.\n", i);
713 return 1;
714 }
715 i = simple_strtoul(argv[3], NULL, 10);
716 return usb_test(udev, i, argv[4]);
717 }
718 #ifdef CONFIG_USB_STORAGE
719 if (strncmp(argv[1], "stor", 4) == 0)
720 return usb_stor_info();
721
722 return blk_common_cmd(argc, argv, IF_TYPE_USB, &usb_stor_curr_dev);
723 #else
724 return CMD_RET_USAGE;
725 #endif /* CONFIG_USB_STORAGE */
726 }
727
728 U_BOOT_CMD(
729 usb, 5, 1, do_usb,
730 "USB sub-system",
731 "start - start (scan) USB controller\n"
732 "usb reset - reset (rescan) USB controller\n"
733 "usb stop [f] - stop USB [f]=force stop\n"
734 "usb tree - show USB device tree\n"
735 "usb info [dev] - show available USB devices\n"
736 "usb test [dev] [port] [mode] - set USB 2.0 test mode\n"
737 " (specify port 0 to indicate the device's upstream port)\n"
738 " Available modes: J, K, S[E0_NAK], P[acket], F[orce_Enable]\n"
739 #ifdef CONFIG_USB_STORAGE
740 "usb storage - show details of USB storage devices\n"
741 "usb dev [dev] - show or set current USB storage device\n"
742 "usb part [dev] - print partition table of one or all USB storage"
743 " devices\n"
744 "usb read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
745 " to memory address `addr'\n"
746 "usb write addr blk# cnt - write `cnt' blocks starting at block `blk#'\n"
747 " from memory address `addr'"
748 #endif /* CONFIG_USB_STORAGE */
749 );
750
751
752 #ifdef CONFIG_USB_STORAGE
753 U_BOOT_CMD(
754 usbboot, 3, 1, do_usbboot,
755 "boot from USB device",
756 "loadAddr dev:part"
757 );
758 #endif /* CONFIG_USB_STORAGE */
759