Merge branch 'master' of git://git.denx.de/u-boot-usb
[platform/kernel/u-boot.git] / cmd / usb.c
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 <dm/uclass-internal.h>
19 #include <memalign.h>
20 #include <asm/byteorder.h>
21 #include <asm/unaligned.h>
22 #include <part.h>
23 #include <usb.h>
24
25 #ifdef CONFIG_USB_STORAGE
26 static int usb_stor_curr_dev = -1; /* current device */
27 #endif
28 #if defined(CONFIG_USB_HOST_ETHER) && !defined(CONFIG_DM_ETH)
29 static int __maybe_unused usb_ether_curr_dev = -1; /* current ethernet device */
30 #endif
31
32 /* some display routines (info command) */
33 static char *usb_get_class_desc(unsigned char dclass)
34 {
35         switch (dclass) {
36         case USB_CLASS_PER_INTERFACE:
37                 return "See Interface";
38         case USB_CLASS_AUDIO:
39                 return "Audio";
40         case USB_CLASS_COMM:
41                 return "Communication";
42         case USB_CLASS_HID:
43                 return "Human Interface";
44         case USB_CLASS_PRINTER:
45                 return "Printer";
46         case USB_CLASS_MASS_STORAGE:
47                 return "Mass Storage";
48         case USB_CLASS_HUB:
49                 return "Hub";
50         case USB_CLASS_DATA:
51                 return "CDC Data";
52         case USB_CLASS_VENDOR_SPEC:
53                 return "Vendor specific";
54         default:
55                 return "";
56         }
57 }
58
59 static void usb_display_class_sub(unsigned char dclass, unsigned char subclass,
60                                   unsigned char proto)
61 {
62         switch (dclass) {
63         case USB_CLASS_PER_INTERFACE:
64                 printf("See Interface");
65                 break;
66         case USB_CLASS_HID:
67                 printf("Human Interface, Subclass: ");
68                 switch (subclass) {
69                 case USB_SUB_HID_NONE:
70                         printf("None");
71                         break;
72                 case USB_SUB_HID_BOOT:
73                         printf("Boot ");
74                         switch (proto) {
75                         case USB_PROT_HID_NONE:
76                                 printf("None");
77                                 break;
78                         case USB_PROT_HID_KEYBOARD:
79                                 printf("Keyboard");
80                                 break;
81                         case USB_PROT_HID_MOUSE:
82                                 printf("Mouse");
83                                 break;
84                         default:
85                                 printf("reserved");
86                                 break;
87                         }
88                         break;
89                 default:
90                         printf("reserved");
91                         break;
92                 }
93                 break;
94         case USB_CLASS_MASS_STORAGE:
95                 printf("Mass Storage, ");
96                 switch (subclass) {
97                 case US_SC_RBC:
98                         printf("RBC ");
99                         break;
100                 case US_SC_8020:
101                         printf("SFF-8020i (ATAPI)");
102                         break;
103                 case US_SC_QIC:
104                         printf("QIC-157 (Tape)");
105                         break;
106                 case US_SC_UFI:
107                         printf("UFI");
108                         break;
109                 case US_SC_8070:
110                         printf("SFF-8070");
111                         break;
112                 case US_SC_SCSI:
113                         printf("Transp. SCSI");
114                         break;
115                 default:
116                         printf("reserved");
117                         break;
118                 }
119                 printf(", ");
120                 switch (proto) {
121                 case US_PR_CB:
122                         printf("Command/Bulk");
123                         break;
124                 case US_PR_CBI:
125                         printf("Command/Bulk/Int");
126                         break;
127                 case US_PR_BULK:
128                         printf("Bulk only");
129                         break;
130                 default:
131                         printf("reserved");
132                         break;
133                 }
134                 break;
135         default:
136                 printf("%s", usb_get_class_desc(dclass));
137                 break;
138         }
139 }
140
141 static void usb_display_string(struct usb_device *dev, int index)
142 {
143         ALLOC_CACHE_ALIGN_BUFFER(char, buffer, 256);
144
145         if (index != 0) {
146                 if (usb_string(dev, index, &buffer[0], 256) > 0)
147                         printf("String: \"%s\"", buffer);
148         }
149 }
150
151 static void usb_display_desc(struct usb_device *dev)
152 {
153         if (dev->descriptor.bDescriptorType == USB_DT_DEVICE) {
154                 printf("%d: %s,  USB Revision %x.%x\n", dev->devnum,
155                 usb_get_class_desc(dev->config.if_desc[0].desc.bInterfaceClass),
156                                    (dev->descriptor.bcdUSB>>8) & 0xff,
157                                    dev->descriptor.bcdUSB & 0xff);
158
159                 if (strlen(dev->mf) || strlen(dev->prod) ||
160                     strlen(dev->serial))
161                         printf(" - %s %s %s\n", dev->mf, dev->prod,
162                                 dev->serial);
163                 if (dev->descriptor.bDeviceClass) {
164                         printf(" - Class: ");
165                         usb_display_class_sub(dev->descriptor.bDeviceClass,
166                                               dev->descriptor.bDeviceSubClass,
167                                               dev->descriptor.bDeviceProtocol);
168                         printf("\n");
169                 } else {
170                         printf(" - Class: (from Interface) %s\n",
171                                usb_get_class_desc(
172                                 dev->config.if_desc[0].desc.bInterfaceClass));
173                 }
174                 printf(" - PacketSize: %d  Configurations: %d\n",
175                         dev->descriptor.bMaxPacketSize0,
176                         dev->descriptor.bNumConfigurations);
177                 printf(" - Vendor: 0x%04x  Product 0x%04x Version %d.%d\n",
178                         dev->descriptor.idVendor, dev->descriptor.idProduct,
179                         (dev->descriptor.bcdDevice>>8) & 0xff,
180                         dev->descriptor.bcdDevice & 0xff);
181         }
182
183 }
184
185 static void usb_display_conf_desc(struct usb_config_descriptor *config,
186                                   struct usb_device *dev)
187 {
188         printf("   Configuration: %d\n", config->bConfigurationValue);
189         printf("   - Interfaces: %d %s%s%dmA\n", config->bNumInterfaces,
190                (config->bmAttributes & 0x40) ? "Self Powered " : "Bus Powered ",
191                (config->bmAttributes & 0x20) ? "Remote Wakeup " : "",
192                 config->bMaxPower*2);
193         if (config->iConfiguration) {
194                 printf("   - ");
195                 usb_display_string(dev, config->iConfiguration);
196                 printf("\n");
197         }
198 }
199
200 static void usb_display_if_desc(struct usb_interface_descriptor *ifdesc,
201                                 struct usb_device *dev)
202 {
203         printf("     Interface: %d\n", ifdesc->bInterfaceNumber);
204         printf("     - Alternate Setting %d, Endpoints: %d\n",
205                 ifdesc->bAlternateSetting, ifdesc->bNumEndpoints);
206         printf("     - Class ");
207         usb_display_class_sub(ifdesc->bInterfaceClass,
208                 ifdesc->bInterfaceSubClass, ifdesc->bInterfaceProtocol);
209         printf("\n");
210         if (ifdesc->iInterface) {
211                 printf("     - ");
212                 usb_display_string(dev, ifdesc->iInterface);
213                 printf("\n");
214         }
215 }
216
217 static void usb_display_ep_desc(struct usb_endpoint_descriptor *epdesc)
218 {
219         printf("     - Endpoint %d %s ", epdesc->bEndpointAddress & 0xf,
220                 (epdesc->bEndpointAddress & 0x80) ? "In" : "Out");
221         switch ((epdesc->bmAttributes & 0x03)) {
222         case 0:
223                 printf("Control");
224                 break;
225         case 1:
226                 printf("Isochronous");
227                 break;
228         case 2:
229                 printf("Bulk");
230                 break;
231         case 3:
232                 printf("Interrupt");
233                 break;
234         }
235         printf(" MaxPacket %d", get_unaligned(&epdesc->wMaxPacketSize));
236         if ((epdesc->bmAttributes & 0x03) == 0x3)
237                 printf(" Interval %dms", epdesc->bInterval);
238         printf("\n");
239 }
240
241 /* main routine to diasplay the configs, interfaces and endpoints */
242 static void usb_display_config(struct usb_device *dev)
243 {
244         struct usb_config *config;
245         struct usb_interface *ifdesc;
246         struct usb_endpoint_descriptor *epdesc;
247         int i, ii;
248
249         config = &dev->config;
250         usb_display_conf_desc(&config->desc, dev);
251         for (i = 0; i < config->no_of_if; i++) {
252                 ifdesc = &config->if_desc[i];
253                 usb_display_if_desc(&ifdesc->desc, dev);
254                 for (ii = 0; ii < ifdesc->no_of_ep; ii++) {
255                         epdesc = &ifdesc->ep_desc[ii];
256                         usb_display_ep_desc(epdesc);
257                 }
258         }
259         printf("\n");
260 }
261
262 /*
263  * With driver model this isn't right since we can have multiple controllers
264  * and the device numbering starts at 1 on each bus.
265  * TODO(sjg@chromium.org): Add a way to specify the controller/bus.
266  */
267 static struct usb_device *usb_find_device(int devnum)
268 {
269 #ifdef CONFIG_DM_USB
270         struct usb_device *udev;
271         struct udevice *hub;
272         struct uclass *uc;
273         int ret;
274
275         /* Device addresses start at 1 */
276         devnum++;
277         ret = uclass_get(UCLASS_USB_HUB, &uc);
278         if (ret)
279                 return NULL;
280
281         uclass_foreach_dev(hub, uc) {
282                 struct udevice *dev;
283
284                 if (!device_active(hub))
285                         continue;
286                 udev = dev_get_parent_priv(hub);
287                 if (udev->devnum == devnum)
288                         return udev;
289
290                 for (device_find_first_child(hub, &dev);
291                      dev;
292                      device_find_next_child(&dev)) {
293                         if (!device_active(hub))
294                                 continue;
295
296                         udev = dev_get_parent_priv(dev);
297                         if (udev->devnum == devnum)
298                                 return udev;
299                 }
300         }
301 #else
302         struct usb_device *udev;
303         int d;
304
305         for (d = 0; d < USB_MAX_DEVICE; d++) {
306                 udev = usb_get_dev_index(d);
307                 if (udev == NULL)
308                         return NULL;
309                 if (udev->devnum == devnum)
310                         return udev;
311         }
312 #endif
313
314         return NULL;
315 }
316
317 static inline char *portspeed(int speed)
318 {
319         char *speed_str;
320
321         switch (speed) {
322         case USB_SPEED_SUPER:
323                 speed_str = "5 Gb/s";
324                 break;
325         case USB_SPEED_HIGH:
326                 speed_str = "480 Mb/s";
327                 break;
328         case USB_SPEED_LOW:
329                 speed_str = "1.5 Mb/s";
330                 break;
331         default:
332                 speed_str = "12 Mb/s";
333                 break;
334         }
335
336         return speed_str;
337 }
338
339 /* shows the device tree recursively */
340 static void usb_show_tree_graph(struct usb_device *dev, char *pre)
341 {
342         int index;
343         int has_child, last_child;
344
345         index = strlen(pre);
346         printf(" %s", pre);
347 #ifdef CONFIG_DM_USB
348         has_child = device_has_active_children(dev->dev);
349 #else
350         /* check if the device has connected children */
351         int i;
352
353         has_child = 0;
354         for (i = 0; i < dev->maxchild; i++) {
355                 if (dev->children[i] != NULL)
356                         has_child = 1;
357         }
358 #endif
359         /* check if we are the last one */
360 #ifdef CONFIG_DM_USB
361         /* Not the root of the usb tree? */
362         if (device_get_uclass_id(dev->dev->parent) != UCLASS_USB) {
363                 last_child = device_is_last_sibling(dev->dev);
364 #else
365         if (dev->parent != NULL) { /* not root? */
366                 last_child = 1;
367                 for (i = 0; i < dev->parent->maxchild; i++) {
368                         /* search for children */
369                         if (dev->parent->children[i] == dev) {
370                                 /* found our pointer, see if we have a
371                                  * little sister
372                                  */
373                                 while (i++ < dev->parent->maxchild) {
374                                         if (dev->parent->children[i] != NULL) {
375                                                 /* found a sister */
376                                                 last_child = 0;
377                                                 break;
378                                         } /* if */
379                                 } /* while */
380                         } /* device found */
381                 } /* for all children of the parent */
382 #endif
383                 printf("\b+-");
384                 /* correct last child */
385                 if (last_child && index)
386                         pre[index-1] = ' ';
387         } /* if not root hub */
388         else
389                 printf(" ");
390         printf("%d ", dev->devnum);
391         pre[index++] = ' ';
392         pre[index++] = has_child ? '|' : ' ';
393         pre[index] = 0;
394         printf(" %s (%s, %dmA)\n", usb_get_class_desc(
395                                         dev->config.if_desc[0].desc.bInterfaceClass),
396                                         portspeed(dev->speed),
397                                         dev->config.desc.bMaxPower * 2);
398         if (strlen(dev->mf) || strlen(dev->prod) || strlen(dev->serial))
399                 printf(" %s  %s %s %s\n", pre, dev->mf, dev->prod, dev->serial);
400         printf(" %s\n", pre);
401 #ifdef CONFIG_DM_USB
402         struct udevice *child;
403
404         for (device_find_first_child(dev->dev, &child);
405              child;
406              device_find_next_child(&child)) {
407                 struct usb_device *udev;
408
409                 if (!device_active(child))
410                         continue;
411
412                 udev = dev_get_parent_priv(child);
413
414                 /* Ignore emulators, we only want real devices */
415                 if (device_get_uclass_id(child) != UCLASS_USB_EMUL) {
416                         usb_show_tree_graph(udev, pre);
417                         pre[index] = 0;
418                 }
419         }
420 #else
421         if (dev->maxchild > 0) {
422                 for (i = 0; i < dev->maxchild; i++) {
423                         if (dev->children[i] != NULL) {
424                                 usb_show_tree_graph(dev->children[i], pre);
425                                 pre[index] = 0;
426                         }
427                 }
428         }
429 #endif
430 }
431
432 /* main routine for the tree command */
433 static void usb_show_subtree(struct usb_device *dev)
434 {
435         char preamble[32];
436
437         memset(preamble, '\0', sizeof(preamble));
438         usb_show_tree_graph(dev, &preamble[0]);
439 }
440
441 void usb_show_tree(void)
442 {
443 #ifdef CONFIG_DM_USB
444         struct udevice *bus;
445
446         for (uclass_find_first_device(UCLASS_USB, &bus);
447                 bus;
448                 uclass_find_next_device(&bus)) {
449                 struct usb_device *udev;
450                 struct udevice *dev;
451
452                 if (!device_active(bus))
453                         continue;
454
455                 device_find_first_child(bus, &dev);
456                 if (dev && device_active(dev)) {
457                         udev = dev_get_parent_priv(dev);
458                         usb_show_subtree(udev);
459                 }
460         }
461 #else
462         struct usb_device *udev;
463         int i;
464
465         for (i = 0; i < USB_MAX_DEVICE; i++) {
466                 udev = usb_get_dev_index(i);
467                 if (udev == NULL)
468                         break;
469                 if (udev->parent == NULL)
470                         usb_show_subtree(udev);
471         }
472 #endif
473 }
474
475 static int usb_test(struct usb_device *dev, int port, char* arg)
476 {
477         int mode;
478
479         if (port > dev->maxchild) {
480                 printf("Device is no hub or does not have %d ports.\n", port);
481                 return 1;
482         }
483
484         switch (arg[0]) {
485         case 'J':
486         case 'j':
487                 printf("Setting Test_J mode");
488                 mode = USB_TEST_MODE_J;
489                 break;
490         case 'K':
491         case 'k':
492                 printf("Setting Test_K mode");
493                 mode = USB_TEST_MODE_K;
494                 break;
495         case 'S':
496         case 's':
497                 printf("Setting Test_SE0_NAK mode");
498                 mode = USB_TEST_MODE_SE0_NAK;
499                 break;
500         case 'P':
501         case 'p':
502                 printf("Setting Test_Packet mode");
503                 mode = USB_TEST_MODE_PACKET;
504                 break;
505         case 'F':
506         case 'f':
507                 printf("Setting Test_Force_Enable mode");
508                 mode = USB_TEST_MODE_FORCE_ENABLE;
509                 break;
510         default:
511                 printf("Unrecognized test mode: %s\nAvailable modes: "
512                        "J, K, S[E0_NAK], P[acket], F[orce_Enable]\n", arg);
513                 return 1;
514         }
515
516         if (port)
517                 printf(" on downstream facing port %d...\n", port);
518         else
519                 printf(" on upstream facing port...\n");
520
521         if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_FEATURE,
522                             port ? USB_RT_PORT : USB_RECIP_DEVICE,
523                             port ? USB_PORT_FEAT_TEST : USB_FEAT_TEST,
524                             (mode << 8) | port,
525                             NULL, 0, USB_CNTL_TIMEOUT) == -1) {
526                 printf("Error during SET_FEATURE.\n");
527                 return 1;
528         } else {
529                 printf("Test mode successfully set. Use 'usb start' "
530                        "to return to normal operation.\n");
531                 return 0;
532         }
533 }
534
535
536 /******************************************************************************
537  * usb boot command intepreter. Derived from diskboot
538  */
539 #ifdef CONFIG_USB_STORAGE
540 static int do_usbboot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
541 {
542         return common_diskboot(cmdtp, "usb", argc, argv);
543 }
544 #endif /* CONFIG_USB_STORAGE */
545
546 static int do_usb_stop_keyboard(int force)
547 {
548 #if !defined CONFIG_DM_USB && defined CONFIG_USB_KEYBOARD
549         if (usb_kbd_deregister(force) != 0) {
550                 printf("USB not stopped: usbkbd still using USB\n");
551                 return 1;
552         }
553 #endif
554         return 0;
555 }
556
557 static void do_usb_start(void)
558 {
559         bootstage_mark_name(BOOTSTAGE_ID_USB_START, "usb_start");
560
561         if (usb_init() < 0)
562                 return;
563
564         /* Driver model will probe the devices as they are found */
565 #ifndef CONFIG_DM_USB
566 # ifdef CONFIG_USB_STORAGE
567         /* try to recognize storage devices immediately */
568         usb_stor_curr_dev = usb_stor_scan(1);
569 # endif
570 # ifdef CONFIG_USB_KEYBOARD
571         drv_usb_kbd_init();
572 # endif
573 #endif /* !CONFIG_DM_USB */
574 #ifdef CONFIG_USB_HOST_ETHER
575 # ifdef CONFIG_DM_ETH
576 #  ifndef CONFIG_DM_USB
577 #   error "You must use CONFIG_DM_USB if you want to use CONFIG_USB_HOST_ETHER with CONFIG_DM_ETH"
578 #  endif
579 # else
580         /* try to recognize ethernet devices immediately */
581         usb_ether_curr_dev = usb_host_eth_scan(1);
582 # endif
583 #endif
584 }
585
586 #ifdef CONFIG_DM_USB
587 static void show_info(struct udevice *dev)
588 {
589         struct udevice *child;
590         struct usb_device *udev;
591
592         udev = dev_get_parent_priv(dev);
593         usb_display_desc(udev);
594         usb_display_config(udev);
595         for (device_find_first_child(dev, &child);
596              child;
597              device_find_next_child(&child)) {
598                 if (device_active(child))
599                         show_info(child);
600         }
601 }
602
603 static int usb_device_info(void)
604 {
605         struct udevice *bus;
606
607         for (uclass_first_device(UCLASS_USB, &bus);
608              bus;
609              uclass_next_device(&bus)) {
610                 struct udevice *hub;
611
612                 device_find_first_child(bus, &hub);
613                 if (device_get_uclass_id(hub) == UCLASS_USB_HUB &&
614                     device_active(hub)) {
615                         show_info(hub);
616                 }
617         }
618
619         return 0;
620 }
621 #endif
622
623 /******************************************************************************
624  * usb command intepreter
625  */
626 static int do_usb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
627 {
628         struct usb_device *udev = NULL;
629         int i;
630         extern char usb_started;
631 #ifdef CONFIG_USB_STORAGE
632         struct blk_desc *stor_dev;
633 #endif
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_device_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         if (strncmp(argv[1], "part", 4) == 0) {
723                 int devno, ok = 0;
724                 if (argc == 2) {
725                         for (devno = 0; ; ++devno) {
726                                 stor_dev = usb_stor_get_dev(devno);
727                                 if (stor_dev == NULL)
728                                         break;
729                                 if (stor_dev->type != DEV_TYPE_UNKNOWN) {
730                                         ok++;
731                                         if (devno)
732                                                 printf("\n");
733                                         debug("print_part of %x\n", devno);
734                                         part_print(stor_dev);
735                                 }
736                         }
737                 } else {
738                         devno = simple_strtoul(argv[2], NULL, 16);
739                         stor_dev = usb_stor_get_dev(devno);
740                         if (stor_dev != NULL &&
741                             stor_dev->type != DEV_TYPE_UNKNOWN) {
742                                 ok++;
743                                 debug("print_part of %x\n", devno);
744                                 part_print(stor_dev);
745                         }
746                 }
747                 if (!ok) {
748                         printf("\nno USB devices available\n");
749                         return 1;
750                 }
751                 return 0;
752         }
753         if (strcmp(argv[1], "read") == 0) {
754                 if (usb_stor_curr_dev < 0) {
755                         printf("no current device selected\n");
756                         return 1;
757                 }
758                 if (argc == 5) {
759                         unsigned long addr = simple_strtoul(argv[2], NULL, 16);
760                         unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
761                         unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
762                         unsigned long n;
763                         printf("\nUSB read: device %d block # %ld, count %ld"
764                                 " ... ", usb_stor_curr_dev, blk, cnt);
765                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
766                         n = blk_dread(stor_dev, blk, cnt, (ulong *)addr);
767                         printf("%ld blocks read: %s\n", n,
768                                 (n == cnt) ? "OK" : "ERROR");
769                         if (n == cnt)
770                                 return 0;
771                         return 1;
772                 }
773         }
774         if (strcmp(argv[1], "write") == 0) {
775                 if (usb_stor_curr_dev < 0) {
776                         printf("no current device selected\n");
777                         return 1;
778                 }
779                 if (argc == 5) {
780                         unsigned long addr = simple_strtoul(argv[2], NULL, 16);
781                         unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
782                         unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
783                         unsigned long n;
784                         printf("\nUSB write: device %d block # %ld, count %ld"
785                                 " ... ", usb_stor_curr_dev, blk, cnt);
786                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
787                         n = blk_dwrite(stor_dev, blk, cnt, (ulong *)addr);
788                         printf("%ld blocks write: %s\n", n,
789                                 (n == cnt) ? "OK" : "ERROR");
790                         if (n == cnt)
791                                 return 0;
792                         return 1;
793                 }
794         }
795         if (strncmp(argv[1], "dev", 3) == 0) {
796                 if (argc == 3) {
797                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
798                         printf("\nUSB device %d: ", dev);
799                         stor_dev = usb_stor_get_dev(dev);
800                         if (stor_dev == NULL) {
801                                 printf("unknown device\n");
802                                 return 1;
803                         }
804                         printf("\n    Device %d: ", dev);
805                         dev_print(stor_dev);
806                         if (stor_dev->type == DEV_TYPE_UNKNOWN)
807                                 return 1;
808                         usb_stor_curr_dev = dev;
809                         printf("... is now current device\n");
810                         return 0;
811                 } else {
812                         printf("\nUSB device %d: ", usb_stor_curr_dev);
813                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
814                         dev_print(stor_dev);
815                         if (stor_dev->type == DEV_TYPE_UNKNOWN)
816                                 return 1;
817                         return 0;
818                 }
819                 return 0;
820         }
821 #endif /* CONFIG_USB_STORAGE */
822         return CMD_RET_USAGE;
823 }
824
825 U_BOOT_CMD(
826         usb,    5,      1,      do_usb,
827         "USB sub-system",
828         "start - start (scan) USB controller\n"
829         "usb reset - reset (rescan) USB controller\n"
830         "usb stop [f] - stop USB [f]=force stop\n"
831         "usb tree - show USB device tree\n"
832         "usb info [dev] - show available USB devices\n"
833         "usb test [dev] [port] [mode] - set USB 2.0 test mode\n"
834         "    (specify port 0 to indicate the device's upstream port)\n"
835         "    Available modes: J, K, S[E0_NAK], P[acket], F[orce_Enable]\n"
836 #ifdef CONFIG_USB_STORAGE
837         "usb storage - show details of USB storage devices\n"
838         "usb dev [dev] - show or set current USB storage device\n"
839         "usb part [dev] - print partition table of one or all USB storage"
840         "    devices\n"
841         "usb read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
842         "    to memory address `addr'\n"
843         "usb write addr blk# cnt - write `cnt' blocks starting at block `blk#'\n"
844         "    from memory address `addr'"
845 #endif /* CONFIG_USB_STORAGE */
846 );
847
848
849 #ifdef CONFIG_USB_STORAGE
850 U_BOOT_CMD(
851         usbboot,        3,      1,      do_usbboot,
852         "boot from USB device",
853         "loadAddr dev:part"
854 );
855 #endif /* CONFIG_USB_STORAGE */