xref: /openbmc/u-boot/cmd/usb.c (revision a7f480d9)
1 /*
2  * (C) Copyright 2001
3  * Denis Peter, MPL AG Switzerland
4  *
5  * Adapted for U-Boot driver model
6  * (C) Copyright 2015 Google, Inc
7  *
8  * Most of this source has been derived from the Linux USB
9  * project.
10  *
11  * SPDX-License-Identifier:	GPL-2.0+
12  */
13 
14 #include <common.h>
15 #include <command.h>
16 #include <console.h>
17 #include <dm.h>
18 #include <memalign.h>
19 #include <asm/byteorder.h>
20 #include <asm/unaligned.h>
21 #include <part.h>
22 #include <usb.h>
23 
24 #ifdef CONFIG_USB_STORAGE
25 static int usb_stor_curr_dev = -1; /* current device */
26 #endif
27 #if defined(CONFIG_USB_HOST_ETHER) && !defined(CONFIG_DM_ETH)
28 static int __maybe_unused usb_ether_curr_dev = -1; /* current ethernet device */
29 #endif
30 
31 /* some display routines (info command) */
32 static char *usb_get_class_desc(unsigned char dclass)
33 {
34 	switch (dclass) {
35 	case USB_CLASS_PER_INTERFACE:
36 		return "See Interface";
37 	case USB_CLASS_AUDIO:
38 		return "Audio";
39 	case USB_CLASS_COMM:
40 		return "Communication";
41 	case USB_CLASS_HID:
42 		return "Human Interface";
43 	case USB_CLASS_PRINTER:
44 		return "Printer";
45 	case USB_CLASS_MASS_STORAGE:
46 		return "Mass Storage";
47 	case USB_CLASS_HUB:
48 		return "Hub";
49 	case USB_CLASS_DATA:
50 		return "CDC Data";
51 	case USB_CLASS_VENDOR_SPEC:
52 		return "Vendor specific";
53 	default:
54 		return "";
55 	}
56 }
57 
58 static void usb_display_class_sub(unsigned char dclass, unsigned char subclass,
59 				  unsigned char proto)
60 {
61 	switch (dclass) {
62 	case USB_CLASS_PER_INTERFACE:
63 		printf("See Interface");
64 		break;
65 	case USB_CLASS_HID:
66 		printf("Human Interface, Subclass: ");
67 		switch (subclass) {
68 		case USB_SUB_HID_NONE:
69 			printf("None");
70 			break;
71 		case USB_SUB_HID_BOOT:
72 			printf("Boot ");
73 			switch (proto) {
74 			case USB_PROT_HID_NONE:
75 				printf("None");
76 				break;
77 			case USB_PROT_HID_KEYBOARD:
78 				printf("Keyboard");
79 				break;
80 			case USB_PROT_HID_MOUSE:
81 				printf("Mouse");
82 				break;
83 			default:
84 				printf("reserved");
85 				break;
86 			}
87 			break;
88 		default:
89 			printf("reserved");
90 			break;
91 		}
92 		break;
93 	case USB_CLASS_MASS_STORAGE:
94 		printf("Mass Storage, ");
95 		switch (subclass) {
96 		case US_SC_RBC:
97 			printf("RBC ");
98 			break;
99 		case US_SC_8020:
100 			printf("SFF-8020i (ATAPI)");
101 			break;
102 		case US_SC_QIC:
103 			printf("QIC-157 (Tape)");
104 			break;
105 		case US_SC_UFI:
106 			printf("UFI");
107 			break;
108 		case US_SC_8070:
109 			printf("SFF-8070");
110 			break;
111 		case US_SC_SCSI:
112 			printf("Transp. SCSI");
113 			break;
114 		default:
115 			printf("reserved");
116 			break;
117 		}
118 		printf(", ");
119 		switch (proto) {
120 		case US_PR_CB:
121 			printf("Command/Bulk");
122 			break;
123 		case US_PR_CBI:
124 			printf("Command/Bulk/Int");
125 			break;
126 		case US_PR_BULK:
127 			printf("Bulk only");
128 			break;
129 		default:
130 			printf("reserved");
131 			break;
132 		}
133 		break;
134 	default:
135 		printf("%s", usb_get_class_desc(dclass));
136 		break;
137 	}
138 }
139 
140 static void usb_display_string(struct usb_device *dev, int index)
141 {
142 	ALLOC_CACHE_ALIGN_BUFFER(char, buffer, 256);
143 
144 	if (index != 0) {
145 		if (usb_string(dev, index, &buffer[0], 256) > 0)
146 			printf("String: \"%s\"", buffer);
147 	}
148 }
149 
150 static void usb_display_desc(struct usb_device *dev)
151 {
152 	if (dev->descriptor.bDescriptorType == USB_DT_DEVICE) {
153 		printf("%d: %s,  USB Revision %x.%x\n", dev->devnum,
154 		usb_get_class_desc(dev->config.if_desc[0].desc.bInterfaceClass),
155 				   (dev->descriptor.bcdUSB>>8) & 0xff,
156 				   dev->descriptor.bcdUSB & 0xff);
157 
158 		if (strlen(dev->mf) || strlen(dev->prod) ||
159 		    strlen(dev->serial))
160 			printf(" - %s %s %s\n", dev->mf, dev->prod,
161 				dev->serial);
162 		if (dev->descriptor.bDeviceClass) {
163 			printf(" - Class: ");
164 			usb_display_class_sub(dev->descriptor.bDeviceClass,
165 					      dev->descriptor.bDeviceSubClass,
166 					      dev->descriptor.bDeviceProtocol);
167 			printf("\n");
168 		} else {
169 			printf(" - Class: (from Interface) %s\n",
170 			       usb_get_class_desc(
171 				dev->config.if_desc[0].desc.bInterfaceClass));
172 		}
173 		printf(" - PacketSize: %d  Configurations: %d\n",
174 			dev->descriptor.bMaxPacketSize0,
175 			dev->descriptor.bNumConfigurations);
176 		printf(" - Vendor: 0x%04x  Product 0x%04x Version %d.%d\n",
177 			dev->descriptor.idVendor, dev->descriptor.idProduct,
178 			(dev->descriptor.bcdDevice>>8) & 0xff,
179 			dev->descriptor.bcdDevice & 0xff);
180 	}
181 
182 }
183 
184 static void usb_display_conf_desc(struct usb_config_descriptor *config,
185 				  struct usb_device *dev)
186 {
187 	printf("   Configuration: %d\n", config->bConfigurationValue);
188 	printf("   - Interfaces: %d %s%s%dmA\n", config->bNumInterfaces,
189 	       (config->bmAttributes & 0x40) ? "Self Powered " : "Bus Powered ",
190 	       (config->bmAttributes & 0x20) ? "Remote Wakeup " : "",
191 		config->bMaxPower*2);
192 	if (config->iConfiguration) {
193 		printf("   - ");
194 		usb_display_string(dev, config->iConfiguration);
195 		printf("\n");
196 	}
197 }
198 
199 static void usb_display_if_desc(struct usb_interface_descriptor *ifdesc,
200 				struct usb_device *dev)
201 {
202 	printf("     Interface: %d\n", ifdesc->bInterfaceNumber);
203 	printf("     - Alternate Setting %d, Endpoints: %d\n",
204 		ifdesc->bAlternateSetting, ifdesc->bNumEndpoints);
205 	printf("     - Class ");
206 	usb_display_class_sub(ifdesc->bInterfaceClass,
207 		ifdesc->bInterfaceSubClass, ifdesc->bInterfaceProtocol);
208 	printf("\n");
209 	if (ifdesc->iInterface) {
210 		printf("     - ");
211 		usb_display_string(dev, ifdesc->iInterface);
212 		printf("\n");
213 	}
214 }
215 
216 static void usb_display_ep_desc(struct usb_endpoint_descriptor *epdesc)
217 {
218 	printf("     - Endpoint %d %s ", epdesc->bEndpointAddress & 0xf,
219 		(epdesc->bEndpointAddress & 0x80) ? "In" : "Out");
220 	switch ((epdesc->bmAttributes & 0x03)) {
221 	case 0:
222 		printf("Control");
223 		break;
224 	case 1:
225 		printf("Isochronous");
226 		break;
227 	case 2:
228 		printf("Bulk");
229 		break;
230 	case 3:
231 		printf("Interrupt");
232 		break;
233 	}
234 	printf(" MaxPacket %d", get_unaligned(&epdesc->wMaxPacketSize));
235 	if ((epdesc->bmAttributes & 0x03) == 0x3)
236 		printf(" Interval %dms", epdesc->bInterval);
237 	printf("\n");
238 }
239 
240 /* main routine to diasplay the configs, interfaces and endpoints */
241 static void usb_display_config(struct usb_device *dev)
242 {
243 	struct usb_config *config;
244 	struct usb_interface *ifdesc;
245 	struct usb_endpoint_descriptor *epdesc;
246 	int i, ii;
247 
248 	config = &dev->config;
249 	usb_display_conf_desc(&config->desc, dev);
250 	for (i = 0; i < config->no_of_if; i++) {
251 		ifdesc = &config->if_desc[i];
252 		usb_display_if_desc(&ifdesc->desc, dev);
253 		for (ii = 0; ii < ifdesc->no_of_ep; ii++) {
254 			epdesc = &ifdesc->ep_desc[ii];
255 			usb_display_ep_desc(epdesc);
256 		}
257 	}
258 	printf("\n");
259 }
260 
261 /*
262  * With driver model this isn't right since we can have multiple controllers
263  * and the device numbering starts at 1 on each bus.
264  * TODO(sjg@chromium.org): Add a way to specify the controller/bus.
265  */
266 static struct usb_device *usb_find_device(int devnum)
267 {
268 #ifdef CONFIG_DM_USB
269 	struct usb_device *udev;
270 	struct udevice *hub;
271 	struct uclass *uc;
272 	int ret;
273 
274 	/* Device addresses start at 1 */
275 	devnum++;
276 	ret = uclass_get(UCLASS_USB_HUB, &uc);
277 	if (ret)
278 		return NULL;
279 
280 	uclass_foreach_dev(hub, uc) {
281 		struct udevice *dev;
282 
283 		if (!device_active(hub))
284 			continue;
285 		udev = dev_get_parent_priv(hub);
286 		if (udev->devnum == devnum)
287 			return udev;
288 
289 		for (device_find_first_child(hub, &dev);
290 		     dev;
291 		     device_find_next_child(&dev)) {
292 			if (!device_active(hub))
293 				continue;
294 
295 			udev = dev_get_parent_priv(dev);
296 			if (udev->devnum == devnum)
297 				return udev;
298 		}
299 	}
300 #else
301 	struct usb_device *udev;
302 	int d;
303 
304 	for (d = 0; d < USB_MAX_DEVICE; d++) {
305 		udev = usb_get_dev_index(d);
306 		if (udev == NULL)
307 			return NULL;
308 		if (udev->devnum == devnum)
309 			return udev;
310 	}
311 #endif
312 
313 	return NULL;
314 }
315 
316 static inline char *portspeed(int speed)
317 {
318 	char *speed_str;
319 
320 	switch (speed) {
321 	case USB_SPEED_SUPER:
322 		speed_str = "5 Gb/s";
323 		break;
324 	case USB_SPEED_HIGH:
325 		speed_str = "480 Mb/s";
326 		break;
327 	case USB_SPEED_LOW:
328 		speed_str = "1.5 Mb/s";
329 		break;
330 	default:
331 		speed_str = "12 Mb/s";
332 		break;
333 	}
334 
335 	return speed_str;
336 }
337 
338 /* shows the device tree recursively */
339 static void usb_show_tree_graph(struct usb_device *dev, char *pre)
340 {
341 	int index;
342 	int has_child, last_child;
343 
344 	index = strlen(pre);
345 	printf(" %s", pre);
346 #ifdef CONFIG_DM_USB
347 	has_child = device_has_active_children(dev->dev);
348 #else
349 	/* check if the device has connected children */
350 	int i;
351 
352 	has_child = 0;
353 	for (i = 0; i < dev->maxchild; i++) {
354 		if (dev->children[i] != NULL)
355 			has_child = 1;
356 	}
357 #endif
358 	/* check if we are the last one */
359 #ifdef CONFIG_DM_USB
360 	/* Not the root of the usb tree? */
361 	if (device_get_uclass_id(dev->dev->parent) != UCLASS_USB) {
362 		last_child = device_is_last_sibling(dev->dev);
363 #else
364 	if (dev->parent != NULL) { /* not root? */
365 		last_child = 1;
366 		for (i = 0; i < dev->parent->maxchild; i++) {
367 			/* search for children */
368 			if (dev->parent->children[i] == dev) {
369 				/* found our pointer, see if we have a
370 				 * little sister
371 				 */
372 				while (i++ < dev->parent->maxchild) {
373 					if (dev->parent->children[i] != NULL) {
374 						/* found a sister */
375 						last_child = 0;
376 						break;
377 					} /* if */
378 				} /* while */
379 			} /* device found */
380 		} /* for all children of the parent */
381 #endif
382 		printf("\b+-");
383 		/* correct last child */
384 		if (last_child && index)
385 			pre[index-1] = ' ';
386 	} /* if not root hub */
387 	else
388 		printf(" ");
389 	printf("%d ", dev->devnum);
390 	pre[index++] = ' ';
391 	pre[index++] = has_child ? '|' : ' ';
392 	pre[index] = 0;
393 	printf(" %s (%s, %dmA)\n", usb_get_class_desc(
394 					dev->config.if_desc[0].desc.bInterfaceClass),
395 					portspeed(dev->speed),
396 					dev->config.desc.bMaxPower * 2);
397 	if (strlen(dev->mf) || strlen(dev->prod) || strlen(dev->serial))
398 		printf(" %s  %s %s %s\n", pre, dev->mf, dev->prod, dev->serial);
399 	printf(" %s\n", pre);
400 #ifdef CONFIG_DM_USB
401 	struct udevice *child;
402 
403 	for (device_find_first_child(dev->dev, &child);
404 	     child;
405 	     device_find_next_child(&child)) {
406 		struct usb_device *udev;
407 
408 		if (!device_active(child))
409 			continue;
410 
411 		udev = dev_get_parent_priv(child);
412 
413 		/* Ignore emulators, we only want real devices */
414 		if (device_get_uclass_id(child) != UCLASS_USB_EMUL) {
415 			usb_show_tree_graph(udev, pre);
416 			pre[index] = 0;
417 		}
418 	}
419 #else
420 	if (dev->maxchild > 0) {
421 		for (i = 0; i < dev->maxchild; i++) {
422 			if (dev->children[i] != NULL) {
423 				usb_show_tree_graph(dev->children[i], pre);
424 				pre[index] = 0;
425 			}
426 		}
427 	}
428 #endif
429 }
430 
431 /* main routine for the tree command */
432 static void usb_show_subtree(struct usb_device *dev)
433 {
434 	char preamble[32];
435 
436 	memset(preamble, '\0', sizeof(preamble));
437 	usb_show_tree_graph(dev, &preamble[0]);
438 }
439 
440 void usb_show_tree(void)
441 {
442 #ifdef CONFIG_DM_USB
443 	struct udevice *bus;
444 
445 	for (uclass_first_device(UCLASS_USB, &bus);
446 		bus;
447 		uclass_next_device(&bus)) {
448 		struct usb_device *udev;
449 		struct udevice *dev;
450 
451 		device_find_first_child(bus, &dev);
452 		if (dev && device_active(dev)) {
453 			udev = dev_get_parent_priv(dev);
454 			usb_show_subtree(udev);
455 		}
456 	}
457 #else
458 	struct usb_device *udev;
459 	int i;
460 
461 	for (i = 0; i < USB_MAX_DEVICE; i++) {
462 		udev = usb_get_dev_index(i);
463 		if (udev == NULL)
464 			break;
465 		if (udev->parent == NULL)
466 			usb_show_subtree(udev);
467 	}
468 #endif
469 }
470 
471 static int usb_test(struct usb_device *dev, int port, char* arg)
472 {
473 	int mode;
474 
475 	if (port > dev->maxchild) {
476 		printf("Device is no hub or does not have %d ports.\n", port);
477 		return 1;
478 	}
479 
480 	switch (arg[0]) {
481 	case 'J':
482 	case 'j':
483 		printf("Setting Test_J mode");
484 		mode = USB_TEST_MODE_J;
485 		break;
486 	case 'K':
487 	case 'k':
488 		printf("Setting Test_K mode");
489 		mode = USB_TEST_MODE_K;
490 		break;
491 	case 'S':
492 	case 's':
493 		printf("Setting Test_SE0_NAK mode");
494 		mode = USB_TEST_MODE_SE0_NAK;
495 		break;
496 	case 'P':
497 	case 'p':
498 		printf("Setting Test_Packet mode");
499 		mode = USB_TEST_MODE_PACKET;
500 		break;
501 	case 'F':
502 	case 'f':
503 		printf("Setting Test_Force_Enable mode");
504 		mode = USB_TEST_MODE_FORCE_ENABLE;
505 		break;
506 	default:
507 		printf("Unrecognized test mode: %s\nAvailable modes: "
508 		       "J, K, S[E0_NAK], P[acket], F[orce_Enable]\n", arg);
509 		return 1;
510 	}
511 
512 	if (port)
513 		printf(" on downstream facing port %d...\n", port);
514 	else
515 		printf(" on upstream facing port...\n");
516 
517 	if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_FEATURE,
518 			    port ? USB_RT_PORT : USB_RECIP_DEVICE,
519 			    port ? USB_PORT_FEAT_TEST : USB_FEAT_TEST,
520 			    (mode << 8) | port,
521 			    NULL, 0, USB_CNTL_TIMEOUT) == -1) {
522 		printf("Error during SET_FEATURE.\n");
523 		return 1;
524 	} else {
525 		printf("Test mode successfully set. Use 'usb start' "
526 		       "to return to normal operation.\n");
527 		return 0;
528 	}
529 }
530 
531 
532 /******************************************************************************
533  * usb boot command intepreter. Derived from diskboot
534  */
535 #ifdef CONFIG_USB_STORAGE
536 static int do_usbboot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
537 {
538 	return common_diskboot(cmdtp, "usb", argc, argv);
539 }
540 #endif /* CONFIG_USB_STORAGE */
541 
542 static int do_usb_stop_keyboard(int force)
543 {
544 #ifdef CONFIG_USB_KEYBOARD
545 	if (usb_kbd_deregister(force) != 0) {
546 		printf("USB not stopped: usbkbd still using USB\n");
547 		return 1;
548 	}
549 #endif
550 	return 0;
551 }
552 
553 static void do_usb_start(void)
554 {
555 	bootstage_mark_name(BOOTSTAGE_ID_USB_START, "usb_start");
556 
557 	if (usb_init() < 0)
558 		return;
559 
560 	/* Driver model will probe the devices as they are found */
561 #ifndef CONFIG_DM_USB
562 # ifdef CONFIG_USB_STORAGE
563 	/* try to recognize storage devices immediately */
564 	usb_stor_curr_dev = usb_stor_scan(1);
565 # endif
566 # ifdef CONFIG_USB_KEYBOARD
567 	drv_usb_kbd_init();
568 # endif
569 #endif /* !CONFIG_DM_USB */
570 #ifdef CONFIG_USB_HOST_ETHER
571 # ifdef CONFIG_DM_ETH
572 #  ifndef CONFIG_DM_USB
573 #   error "You must use CONFIG_DM_USB if you want to use CONFIG_USB_HOST_ETHER with CONFIG_DM_ETH"
574 #  endif
575 # else
576 	/* try to recognize ethernet devices immediately */
577 	usb_ether_curr_dev = usb_host_eth_scan(1);
578 # endif
579 #endif
580 }
581 
582 #ifdef CONFIG_DM_USB
583 static void show_info(struct udevice *dev)
584 {
585 	struct udevice *child;
586 	struct usb_device *udev;
587 
588 	udev = dev_get_parent_priv(dev);
589 	usb_display_desc(udev);
590 	usb_display_config(udev);
591 	for (device_find_first_child(dev, &child);
592 	     child;
593 	     device_find_next_child(&child)) {
594 		if (device_active(child))
595 			show_info(child);
596 	}
597 }
598 
599 static int usb_device_info(void)
600 {
601 	struct udevice *bus;
602 
603 	for (uclass_first_device(UCLASS_USB, &bus);
604 	     bus;
605 	     uclass_next_device(&bus)) {
606 		struct udevice *hub;
607 
608 		device_find_first_child(bus, &hub);
609 		if (device_get_uclass_id(hub) == UCLASS_USB_HUB &&
610 		    device_active(hub)) {
611 			show_info(hub);
612 		}
613 	}
614 
615 	return 0;
616 }
617 #endif
618 
619 /******************************************************************************
620  * usb command intepreter
621  */
622 static int do_usb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
623 {
624 	struct usb_device *udev = NULL;
625 	int i;
626 	extern char usb_started;
627 #ifdef CONFIG_USB_STORAGE
628 	struct blk_desc *stor_dev;
629 #endif
630 
631 	if (argc < 2)
632 		return CMD_RET_USAGE;
633 
634 	if (strncmp(argv[1], "start", 5) == 0) {
635 		if (usb_started)
636 			return 0; /* Already started */
637 		printf("starting USB...\n");
638 		do_usb_start();
639 		return 0;
640 	}
641 
642 	if (strncmp(argv[1], "reset", 5) == 0) {
643 		printf("resetting USB...\n");
644 		if (do_usb_stop_keyboard(1) != 0)
645 			return 1;
646 		usb_stop();
647 		do_usb_start();
648 		return 0;
649 	}
650 	if (strncmp(argv[1], "stop", 4) == 0) {
651 		if (argc != 2)
652 			console_assign(stdin, "serial");
653 		if (do_usb_stop_keyboard(0) != 0)
654 			return 1;
655 		printf("stopping USB..\n");
656 		usb_stop();
657 		return 0;
658 	}
659 	if (!usb_started) {
660 		printf("USB is stopped. Please issue 'usb start' first.\n");
661 		return 1;
662 	}
663 	if (strncmp(argv[1], "tree", 4) == 0) {
664 		puts("USB device tree:\n");
665 		usb_show_tree();
666 		return 0;
667 	}
668 	if (strncmp(argv[1], "inf", 3) == 0) {
669 		if (argc == 2) {
670 #ifdef CONFIG_DM_USB
671 			usb_device_info();
672 #else
673 			int d;
674 			for (d = 0; d < USB_MAX_DEVICE; d++) {
675 				udev = usb_get_dev_index(d);
676 				if (udev == NULL)
677 					break;
678 				usb_display_desc(udev);
679 				usb_display_config(udev);
680 			}
681 #endif
682 			return 0;
683 		} else {
684 			/*
685 			 * With driver model this isn't right since we can
686 			 * have multiple controllers and the device numbering
687 			 * starts at 1 on each bus.
688 			 */
689 			i = simple_strtoul(argv[2], NULL, 10);
690 			printf("config for device %d\n", i);
691 			udev = usb_find_device(i);
692 			if (udev == NULL) {
693 				printf("*** No device available ***\n");
694 				return 0;
695 			} else {
696 				usb_display_desc(udev);
697 				usb_display_config(udev);
698 			}
699 		}
700 		return 0;
701 	}
702 	if (strncmp(argv[1], "test", 4) == 0) {
703 		if (argc < 5)
704 			return CMD_RET_USAGE;
705 		i = simple_strtoul(argv[2], NULL, 10);
706 		udev = usb_find_device(i);
707 		if (udev == NULL) {
708 			printf("Device %d does not exist.\n", i);
709 			return 1;
710 		}
711 		i = simple_strtoul(argv[3], NULL, 10);
712 		return usb_test(udev, i, argv[4]);
713 	}
714 #ifdef CONFIG_USB_STORAGE
715 	if (strncmp(argv[1], "stor", 4) == 0)
716 		return usb_stor_info();
717 
718 	if (strncmp(argv[1], "part", 4) == 0) {
719 		int devno, ok = 0;
720 		if (argc == 2) {
721 			for (devno = 0; ; ++devno) {
722 				stor_dev = usb_stor_get_dev(devno);
723 				if (stor_dev == NULL)
724 					break;
725 				if (stor_dev->type != DEV_TYPE_UNKNOWN) {
726 					ok++;
727 					if (devno)
728 						printf("\n");
729 					debug("print_part of %x\n", devno);
730 					part_print(stor_dev);
731 				}
732 			}
733 		} else {
734 			devno = simple_strtoul(argv[2], NULL, 16);
735 			stor_dev = usb_stor_get_dev(devno);
736 			if (stor_dev != NULL &&
737 			    stor_dev->type != DEV_TYPE_UNKNOWN) {
738 				ok++;
739 				debug("print_part of %x\n", devno);
740 				part_print(stor_dev);
741 			}
742 		}
743 		if (!ok) {
744 			printf("\nno USB devices available\n");
745 			return 1;
746 		}
747 		return 0;
748 	}
749 	if (strcmp(argv[1], "read") == 0) {
750 		if (usb_stor_curr_dev < 0) {
751 			printf("no current device selected\n");
752 			return 1;
753 		}
754 		if (argc == 5) {
755 			unsigned long addr = simple_strtoul(argv[2], NULL, 16);
756 			unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
757 			unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
758 			unsigned long n;
759 			printf("\nUSB read: device %d block # %ld, count %ld"
760 				" ... ", usb_stor_curr_dev, blk, cnt);
761 			stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
762 			n = blk_dread(stor_dev, blk, cnt, (ulong *)addr);
763 			printf("%ld blocks read: %s\n", n,
764 				(n == cnt) ? "OK" : "ERROR");
765 			if (n == cnt)
766 				return 0;
767 			return 1;
768 		}
769 	}
770 	if (strcmp(argv[1], "write") == 0) {
771 		if (usb_stor_curr_dev < 0) {
772 			printf("no current device selected\n");
773 			return 1;
774 		}
775 		if (argc == 5) {
776 			unsigned long addr = simple_strtoul(argv[2], NULL, 16);
777 			unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
778 			unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
779 			unsigned long n;
780 			printf("\nUSB write: device %d block # %ld, count %ld"
781 				" ... ", usb_stor_curr_dev, blk, cnt);
782 			stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
783 			n = blk_dwrite(stor_dev, blk, cnt, (ulong *)addr);
784 			printf("%ld blocks write: %s\n", n,
785 				(n == cnt) ? "OK" : "ERROR");
786 			if (n == cnt)
787 				return 0;
788 			return 1;
789 		}
790 	}
791 	if (strncmp(argv[1], "dev", 3) == 0) {
792 		if (argc == 3) {
793 			int dev = (int)simple_strtoul(argv[2], NULL, 10);
794 			printf("\nUSB device %d: ", dev);
795 			stor_dev = usb_stor_get_dev(dev);
796 			if (stor_dev == NULL) {
797 				printf("unknown device\n");
798 				return 1;
799 			}
800 			printf("\n    Device %d: ", dev);
801 			dev_print(stor_dev);
802 			if (stor_dev->type == DEV_TYPE_UNKNOWN)
803 				return 1;
804 			usb_stor_curr_dev = dev;
805 			printf("... is now current device\n");
806 			return 0;
807 		} else {
808 			printf("\nUSB device %d: ", usb_stor_curr_dev);
809 			stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
810 			dev_print(stor_dev);
811 			if (stor_dev->type == DEV_TYPE_UNKNOWN)
812 				return 1;
813 			return 0;
814 		}
815 		return 0;
816 	}
817 #endif /* CONFIG_USB_STORAGE */
818 	return CMD_RET_USAGE;
819 }
820 
821 U_BOOT_CMD(
822 	usb,	5,	1,	do_usb,
823 	"USB sub-system",
824 	"start - start (scan) USB controller\n"
825 	"usb reset - reset (rescan) USB controller\n"
826 	"usb stop [f] - stop USB [f]=force stop\n"
827 	"usb tree - show USB device tree\n"
828 	"usb info [dev] - show available USB devices\n"
829 	"usb test [dev] [port] [mode] - set USB 2.0 test mode\n"
830 	"    (specify port 0 to indicate the device's upstream port)\n"
831 	"    Available modes: J, K, S[E0_NAK], P[acket], F[orce_Enable]\n"
832 #ifdef CONFIG_USB_STORAGE
833 	"usb storage - show details of USB storage devices\n"
834 	"usb dev [dev] - show or set current USB storage device\n"
835 	"usb part [dev] - print partition table of one or all USB storage"
836 	"    devices\n"
837 	"usb read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
838 	"    to memory address `addr'\n"
839 	"usb write addr blk# cnt - write `cnt' blocks starting at block `blk#'\n"
840 	"    from memory address `addr'"
841 #endif /* CONFIG_USB_STORAGE */
842 );
843 
844 
845 #ifdef CONFIG_USB_STORAGE
846 U_BOOT_CMD(
847 	usbboot,	3,	1,	do_usbboot,
848 	"boot from USB device",
849 	"loadAddr dev:part"
850 );
851 #endif /* CONFIG_USB_STORAGE */
852