Remove the cmd_ prefix from command files

Now that they are in their own directory, we can remove this prefix.
This makes it easier to find a file since the prefix does not get in the
way.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>

1 files changed, 853 insertions, 0 deletions

diff --git a/cmd/usb.c b/cmd/usb.c
new file mode 100644
index 0000000000..c7b642c40a
--- /dev/null
+++ b/cmd/usb.c
@@ -0,0 +1,853 @@
+/*
+ * (C) Copyright 2001
+ * Denis Peter, MPL AG Switzerland
+ *
+ * Adapted for U-Boot driver model
+ * (C) Copyright 2015 Google, Inc
+ *
+ * Most of this source has been derived from the Linux USB
+ * project.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <console.h>
+#include <dm.h>
+#include <memalign.h>
+#include <asm/byteorder.h>
+#include <asm/unaligned.h>
+#include <part.h>
+#include <usb.h>
+
+#ifdef CONFIG_USB_STORAGE
+static int usb_stor_curr_dev = -1; /* current device */
+#endif
+#if defined(CONFIG_USB_HOST_ETHER) && !defined(CONFIG_DM_ETH)
+static int __maybe_unused usb_ether_curr_dev = -1; /* current ethernet device */
+#endif
+
+/* some display routines (info command) */
+static char *usb_get_class_desc(unsigned char dclass)
+{
+	switch (dclass) {
+	case USB_CLASS_PER_INTERFACE:
+		return "See Interface";
+	case USB_CLASS_AUDIO:
+		return "Audio";
+	case USB_CLASS_COMM:
+		return "Communication";
+	case USB_CLASS_HID:
+		return "Human Interface";
+	case USB_CLASS_PRINTER:
+		return "Printer";
+	case USB_CLASS_MASS_STORAGE:
+		return "Mass Storage";
+	case USB_CLASS_HUB:
+		return "Hub";
+	case USB_CLASS_DATA:
+		return "CDC Data";
+	case USB_CLASS_VENDOR_SPEC:
+		return "Vendor specific";
+	default:
+		return "";
+	}
+}
+
+static void usb_display_class_sub(unsigned char dclass, unsigned char subclass,
+				  unsigned char proto)
+{
+	switch (dclass) {
+	case USB_CLASS_PER_INTERFACE:
+		printf("See Interface");
+		break;
+	case USB_CLASS_HID:
+		printf("Human Interface, Subclass: ");
+		switch (subclass) {
+		case USB_SUB_HID_NONE:
+			printf("None");
+			break;
+		case USB_SUB_HID_BOOT:
+			printf("Boot ");
+			switch (proto) {
+			case USB_PROT_HID_NONE:
+				printf("None");
+				break;
+			case USB_PROT_HID_KEYBOARD:
+				printf("Keyboard");
+				break;
+			case USB_PROT_HID_MOUSE:
+				printf("Mouse");
+				break;
+			default:
+				printf("reserved");
+				break;
+			}
+			break;
+		default:
+			printf("reserved");
+			break;
+		}
+		break;
+	case USB_CLASS_MASS_STORAGE:
+		printf("Mass Storage, ");
+		switch (subclass) {
+		case US_SC_RBC:
+			printf("RBC ");
+			break;
+		case US_SC_8020:
+			printf("SFF-8020i (ATAPI)");
+			break;
+		case US_SC_QIC:
+			printf("QIC-157 (Tape)");
+			break;
+		case US_SC_UFI:
+			printf("UFI");
+			break;
+		case US_SC_8070:
+			printf("SFF-8070");
+			break;
+		case US_SC_SCSI:
+			printf("Transp. SCSI");
+			break;
+		default:
+			printf("reserved");
+			break;
+		}
+		printf(", ");
+		switch (proto) {
+		case US_PR_CB:
+			printf("Command/Bulk");
+			break;
+		case US_PR_CBI:
+			printf("Command/Bulk/Int");
+			break;
+		case US_PR_BULK:
+			printf("Bulk only");
+			break;
+		default:
+			printf("reserved");
+			break;
+		}
+		break;
+	default:
+		printf("%s", usb_get_class_desc(dclass));
+		break;
+	}
+}
+
+static void usb_display_string(struct usb_device *dev, int index)
+{
+	ALLOC_CACHE_ALIGN_BUFFER(char, buffer, 256);
+
+	if (index != 0) {
+		if (usb_string(dev, index, &buffer[0], 256) > 0)
+			printf("String: \"%s\"", buffer);
+	}
+}
+
+static void usb_display_desc(struct usb_device *dev)
+{
+	if (dev->descriptor.bDescriptorType == USB_DT_DEVICE) {
+		printf("%d: %s,  USB Revision %x.%x\n", dev->devnum,
+		usb_get_class_desc(dev->config.if_desc[0].desc.bInterfaceClass),
+				   (dev->descriptor.bcdUSB>>8) & 0xff,
+				   dev->descriptor.bcdUSB & 0xff);
+
+		if (strlen(dev->mf) || strlen(dev->prod) ||
+		    strlen(dev->serial))
+			printf(" - %s %s %s\n", dev->mf, dev->prod,
+				dev->serial);
+		if (dev->descriptor.bDeviceClass) {
+			printf(" - Class: ");
+			usb_display_class_sub(dev->descriptor.bDeviceClass,
+					      dev->descriptor.bDeviceSubClass,
+					      dev->descriptor.bDeviceProtocol);
+			printf("\n");
+		} else {
+			printf(" - Class: (from Interface) %s\n",
+			       usb_get_class_desc(
+				dev->config.if_desc[0].desc.bInterfaceClass));
+		}
+		printf(" - PacketSize: %d  Configurations: %d\n",
+			dev->descriptor.bMaxPacketSize0,
+			dev->descriptor.bNumConfigurations);
+		printf(" - Vendor: 0x%04x  Product 0x%04x Version %d.%d\n",
+			dev->descriptor.idVendor, dev->descriptor.idProduct,
+			(dev->descriptor.bcdDevice>>8) & 0xff,
+			dev->descriptor.bcdDevice & 0xff);
+	}
+
+}
+
+static void usb_display_conf_desc(struct usb_config_descriptor *config,
+				  struct usb_device *dev)
+{
+	printf("   Configuration: %d\n", config->bConfigurationValue);
+	printf("   - Interfaces: %d %s%s%dmA\n", config->bNumInterfaces,
+	       (config->bmAttributes & 0x40) ? "Self Powered " : "Bus Powered ",
+	       (config->bmAttributes & 0x20) ? "Remote Wakeup " : "",
+		config->bMaxPower*2);
+	if (config->iConfiguration) {
+		printf("   - ");
+		usb_display_string(dev, config->iConfiguration);
+		printf("\n");
+	}
+}
+
+static void usb_display_if_desc(struct usb_interface_descriptor *ifdesc,
+				struct usb_device *dev)
+{
+	printf("     Interface: %d\n", ifdesc->bInterfaceNumber);
+	printf("     - Alternate Setting %d, Endpoints: %d\n",
+		ifdesc->bAlternateSetting, ifdesc->bNumEndpoints);
+	printf("     - Class ");
+	usb_display_class_sub(ifdesc->bInterfaceClass,
+		ifdesc->bInterfaceSubClass, ifdesc->bInterfaceProtocol);
+	printf("\n");
+	if (ifdesc->iInterface) {
+		printf("     - ");
+		usb_display_string(dev, ifdesc->iInterface);
+		printf("\n");
+	}
+}
+
+static void usb_display_ep_desc(struct usb_endpoint_descriptor *epdesc)
+{
+	printf("     - Endpoint %d %s ", epdesc->bEndpointAddress & 0xf,
+		(epdesc->bEndpointAddress & 0x80) ? "In" : "Out");
+	switch ((epdesc->bmAttributes & 0x03)) {
+	case 0:
+		printf("Control");
+		break;
+	case 1:
+		printf("Isochronous");
+		break;
+	case 2:
+		printf("Bulk");
+		break;
+	case 3:
+		printf("Interrupt");
+		break;
+	}
+	printf(" MaxPacket %d", get_unaligned(&epdesc->wMaxPacketSize));
+	if ((epdesc->bmAttributes & 0x03) == 0x3)
+		printf(" Interval %dms", epdesc->bInterval);
+	printf("\n");
+}
+
+/* main routine to diasplay the configs, interfaces and endpoints */
+static void usb_display_config(struct usb_device *dev)
+{
+	struct usb_config *config;
+	struct usb_interface *ifdesc;
+	struct usb_endpoint_descriptor *epdesc;
+	int i, ii;
+
+	config = &dev->config;
+	usb_display_conf_desc(&config->desc, dev);
+	for (i = 0; i < config->no_of_if; i++) {
+		ifdesc = &config->if_desc[i];
+		usb_display_if_desc(&ifdesc->desc, dev);
+		for (ii = 0; ii < ifdesc->no_of_ep; ii++) {
+			epdesc = &ifdesc->ep_desc[ii];
+			usb_display_ep_desc(epdesc);
+		}
+	}
+	printf("\n");
+}
+
+/*
+ * With driver model this isn't right since we can have multiple controllers
+ * and the device numbering starts at 1 on each bus.
+ * TODO(sjg@chromium.org): Add a way to specify the controller/bus.
+ */
+static struct usb_device *usb_find_device(int devnum)
+{
+#ifdef CONFIG_DM_USB
+	struct usb_device *udev;
+	struct udevice *hub;
+	struct uclass *uc;
+	int ret;
+
+	/* Device addresses start at 1 */
+	devnum++;
+	ret = uclass_get(UCLASS_USB_HUB, &uc);
+	if (ret)
+		return NULL;
+
+	uclass_foreach_dev(hub, uc) {
+		struct udevice *dev;
+
+		if (!device_active(hub))
+			continue;
+		udev = dev_get_parent_priv(hub);
+		if (udev->devnum == devnum)
+			return udev;
+
+		for (device_find_first_child(hub, &dev);
+		     dev;
+		     device_find_next_child(&dev)) {
+			if (!device_active(hub))
+				continue;
+
+			udev = dev_get_parent_priv(dev);
+			if (udev->devnum == devnum)
+				return udev;
+		}
+	}
+#else
+	struct usb_device *udev;
+	int d;
+
+	for (d = 0; d < USB_MAX_DEVICE; d++) {
+		udev = usb_get_dev_index(d);
+		if (udev == NULL)
+			return NULL;
+		if (udev->devnum == devnum)
+			return udev;
+	}
+#endif
+
+	return NULL;
+}
+
+static inline char *portspeed(int speed)
+{
+	char *speed_str;
+
+	switch (speed) {
+	case USB_SPEED_SUPER:
+		speed_str = "5 Gb/s";
+		break;
+	case USB_SPEED_HIGH:
+		speed_str = "480 Mb/s";
+		break;
+	case USB_SPEED_LOW:
+		speed_str = "1.5 Mb/s";
+		break;
+	default:
+		speed_str = "12 Mb/s";
+		break;
+	}
+
+	return speed_str;
+}
+
+/* shows the device tree recursively */
+static void usb_show_tree_graph(struct usb_device *dev, char *pre)
+{
+	int index;
+	int has_child, last_child;
+
+	index = strlen(pre);
+	printf(" %s", pre);
+#ifdef CONFIG_DM_USB
+	has_child = device_has_active_children(dev->dev);
+#else
+	/* check if the device has connected children */
+	int i;
+
+	has_child = 0;
+	for (i = 0; i < dev->maxchild; i++) {
+		if (dev->children[i] != NULL)
+			has_child = 1;
+	}
+#endif
+	/* check if we are the last one */
+#ifdef CONFIG_DM_USB
+	/* Not the root of the usb tree? */
+	if (device_get_uclass_id(dev->dev->parent) != UCLASS_USB) {
+		last_child = device_is_last_sibling(dev->dev);
+#else
+	if (dev->parent != NULL) { /* not root? */
+		last_child = 1;
+		for (i = 0; i < dev->parent->maxchild; i++) {
+			/* search for children */
+			if (dev->parent->children[i] == dev) {
+				/* found our pointer, see if we have a
+				 * little sister
+				 */
+				while (i++ < dev->parent->maxchild) {
+					if (dev->parent->children[i] != NULL) {
+						/* found a sister */
+						last_child = 0;
+						break;
+					} /* if */
+				} /* while */
+			} /* device found */
+		} /* for all children of the parent */
+#endif
+		printf("\b+-");
+		/* correct last child */
+		if (last_child && index)
+			pre[index-1] = ' ';
+	} /* if not root hub */
+	else
+		printf(" ");
+	printf("%d ", dev->devnum);
+	pre[index++] = ' ';
+	pre[index++] = has_child ? '|' : ' ';
+	pre[index] = 0;
+	printf(" %s (%s, %dmA)\n", usb_get_class_desc(
+					dev->config.if_desc[0].desc.bInterfaceClass),
+					portspeed(dev->speed),
+					dev->config.desc.bMaxPower * 2);
+	if (strlen(dev->mf) || strlen(dev->prod) || strlen(dev->serial))
+		printf(" %s  %s %s %s\n", pre, dev->mf, dev->prod, dev->serial);
+	printf(" %s\n", pre);
+#ifdef CONFIG_DM_USB
+	struct udevice *child;
+
+	for (device_find_first_child(dev->dev, &child);
+	     child;
+	     device_find_next_child(&child)) {
+		struct usb_device *udev;
+
+		if (!device_active(child))
+			continue;
+
+		udev = dev_get_parent_priv(child);
+
+		/* Ignore emulators, we only want real devices */
+		if (device_get_uclass_id(child) != UCLASS_USB_EMUL) {
+			usb_show_tree_graph(udev, pre);
+			pre[index] = 0;
+		}
+	}
+#else
+	if (dev->maxchild > 0) {
+		for (i = 0; i < dev->maxchild; i++) {
+			if (dev->children[i] != NULL) {
+				usb_show_tree_graph(dev->children[i], pre);
+				pre[index] = 0;
+			}
+		}
+	}
+#endif
+}
+
+/* main routine for the tree command */
+static void usb_show_subtree(struct usb_device *dev)
+{
+	char preamble[32];
+
+	memset(preamble, '\0', sizeof(preamble));
+	usb_show_tree_graph(dev, &preamble[0]);
+}
+
+void usb_show_tree(void)
+{
+#ifdef CONFIG_DM_USB
+	struct udevice *bus;
+
+	for (uclass_first_device(UCLASS_USB, &bus);
+		bus;
+		uclass_next_device(&bus)) {
+		struct usb_device *udev;
+		struct udevice *dev;
+
+		device_find_first_child(bus, &dev);
+		if (dev && device_active(dev)) {
+			udev = dev_get_parent_priv(dev);
+			usb_show_subtree(udev);
+		}
+	}
+#else
+	struct usb_device *udev;
+	int i;
+
+	for (i = 0; i < USB_MAX_DEVICE; i++) {
+		udev = usb_get_dev_index(i);
+		if (udev == NULL)
+			break;
+		if (udev->parent == NULL)
+			usb_show_subtree(udev);
+	}
+#endif
+}
+
+static int usb_test(struct usb_device *dev, int port, char* arg)
+{
+	int mode;
+
+	if (port > dev->maxchild) {
+		printf("Device is no hub or does not have %d ports.\n", port);
+		return 1;
+	}
+
+	switch (arg[0]) {
+	case 'J':
+	case 'j':
+		printf("Setting Test_J mode");
+		mode = USB_TEST_MODE_J;
+		break;
+	case 'K':
+	case 'k':
+		printf("Setting Test_K mode");
+		mode = USB_TEST_MODE_K;
+		break;
+	case 'S':
+	case 's':
+		printf("Setting Test_SE0_NAK mode");
+		mode = USB_TEST_MODE_SE0_NAK;
+		break;
+	case 'P':
+	case 'p':
+		printf("Setting Test_Packet mode");
+		mode = USB_TEST_MODE_PACKET;
+		break;
+	case 'F':
+	case 'f':
+		printf("Setting Test_Force_Enable mode");
+		mode = USB_TEST_MODE_FORCE_ENABLE;
+		break;
+	default:
+		printf("Unrecognized test mode: %s\nAvailable modes: "
+		       "J, K, S[E0_NAK], P[acket], F[orce_Enable]\n", arg);
+		return 1;
+	}
+
+	if (port)
+		printf(" on downstream facing port %d...\n", port);
+	else
+		printf(" on upstream facing port...\n");
+
+	if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_FEATURE,
+			    port ? USB_RT_PORT : USB_RECIP_DEVICE,
+			    port ? USB_PORT_FEAT_TEST : USB_FEAT_TEST,
+			    (mode << 8) | port,
+			    NULL, 0, USB_CNTL_TIMEOUT) == -1) {
+		printf("Error during SET_FEATURE.\n");
+		return 1;
+	} else {
+		printf("Test mode successfully set. Use 'usb start' "
+		       "to return to normal operation.\n");
+		return 0;
+	}
+}
+
+
+/******************************************************************************
+ * usb boot command intepreter. Derived from diskboot
+ */
+#ifdef CONFIG_USB_STORAGE
+static int do_usbboot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	return common_diskboot(cmdtp, "usb", argc, argv);
+}
+#endif /* CONFIG_USB_STORAGE */
+
+static int do_usb_stop_keyboard(int force)
+{
+#ifdef CONFIG_USB_KEYBOARD
+	if (usb_kbd_deregister(force) != 0) {
+		printf("USB not stopped: usbkbd still using USB\n");
+		return 1;
+	}
+#endif
+	return 0;
+}
+
+static void do_usb_start(void)
+{
+	bootstage_mark_name(BOOTSTAGE_ID_USB_START, "usb_start");
+
+	if (usb_init() < 0)
+		return;
+
+	/* Driver model will probe the devices as they are found */
+#ifndef CONFIG_DM_USB
+# ifdef CONFIG_USB_STORAGE
+	/* try to recognize storage devices immediately */
+	usb_stor_curr_dev = usb_stor_scan(1);
+# endif
+# ifdef CONFIG_USB_KEYBOARD
+	drv_usb_kbd_init();
+# endif
+#endif /* !CONFIG_DM_USB */
+#ifdef CONFIG_USB_HOST_ETHER
+# ifdef CONFIG_DM_ETH
+#  ifndef CONFIG_DM_USB
+#   error "You must use CONFIG_DM_USB if you want to use CONFIG_USB_HOST_ETHER with CONFIG_DM_ETH"
+#  endif
+# else
+	/* try to recognize ethernet devices immediately */
+	usb_ether_curr_dev = usb_host_eth_scan(1);
+# endif
+#endif
+}
+
+#ifdef CONFIG_DM_USB
+static void show_info(struct udevice *dev)
+{
+	struct udevice *child;
+	struct usb_device *udev;
+
+	udev = dev_get_parent_priv(dev);
+	usb_display_desc(udev);
+	usb_display_config(udev);
+	for (device_find_first_child(dev, &child);
+	     child;
+	     device_find_next_child(&child)) {
+		if (device_active(child))
+			show_info(child);
+	}
+}
+
+static int usb_device_info(void)
+{
+	struct udevice *bus;
+
+	for (uclass_first_device(UCLASS_USB, &bus);
+	     bus;
+	     uclass_next_device(&bus)) {
+		struct udevice *hub;
+
+		device_find_first_child(bus, &hub);
+		if (device_get_uclass_id(hub) == UCLASS_USB_HUB &&
+		    device_active(hub)) {
+			show_info(hub);
+		}
+	}
+
+	return 0;
+}
+#endif
+
+/******************************************************************************
+ * usb command intepreter
+ */
+static int do_usb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	struct usb_device *udev = NULL;
+	int i;
+	extern char usb_started;
+#ifdef CONFIG_USB_STORAGE
+	block_dev_desc_t *stor_dev;
+#endif
+
+	if (argc < 2)
+		return CMD_RET_USAGE;
+
+	if (strncmp(argv[1], "start", 5) == 0) {
+		if (usb_started)
+			return 0; /* Already started */
+		printf("starting USB...\n");
+		do_usb_start();
+		return 0;
+	}
+
+	if (strncmp(argv[1], "reset", 5) == 0) {
+		printf("resetting USB...\n");
+		if (do_usb_stop_keyboard(1) != 0)
+			return 1;
+		usb_stop();
+		do_usb_start();
+		return 0;
+	}
+	if (strncmp(argv[1], "stop", 4) == 0) {
+		if (argc != 2)
+			console_assign(stdin, "serial");
+		if (do_usb_stop_keyboard(0) != 0)
+			return 1;
+		printf("stopping USB..\n");
+		usb_stop();
+		return 0;
+	}
+	if (!usb_started) {
+		printf("USB is stopped. Please issue 'usb start' first.\n");
+		return 1;
+	}
+	if (strncmp(argv[1], "tree", 4) == 0) {
+		puts("USB device tree:\n");
+		usb_show_tree();
+		return 0;
+	}
+	if (strncmp(argv[1], "inf", 3) == 0) {
+		if (argc == 2) {
+#ifdef CONFIG_DM_USB
+			usb_device_info();
+#else
+			int d;
+			for (d = 0; d < USB_MAX_DEVICE; d++) {
+				udev = usb_get_dev_index(d);
+				if (udev == NULL)
+					break;
+				usb_display_desc(udev);
+				usb_display_config(udev);
+			}
+#endif
+			return 0;
+		} else {
+			/*
+			 * With driver model this isn't right since we can
+			 * have multiple controllers and the device numbering
+			 * starts at 1 on each bus.
+			 */
+			i = simple_strtoul(argv[2], NULL, 10);
+			printf("config for device %d\n", i);
+			udev = usb_find_device(i);
+			if (udev == NULL) {
+				printf("*** No device available ***\n");
+				return 0;
+			} else {
+				usb_display_desc(udev);
+				usb_display_config(udev);
+			}
+		}
+		return 0;
+	}
+	if (strncmp(argv[1], "test", 4) == 0) {
+		if (argc < 5)
+			return CMD_RET_USAGE;
+		i = simple_strtoul(argv[2], NULL, 10);
+		udev = usb_find_device(i);
+		if (udev == NULL) {
+			printf("Device %d does not exist.\n", i);
+			return 1;
+		}
+		i = simple_strtoul(argv[3], NULL, 10);
+		return usb_test(udev, i, argv[4]);
+	}
+#ifdef CONFIG_USB_STORAGE
+	if (strncmp(argv[1], "stor", 4) == 0)
+		return usb_stor_info();
+
+	if (strncmp(argv[1], "part", 4) == 0) {
+		int devno, ok = 0;
+		if (argc == 2) {
+			for (devno = 0; ; ++devno) {
+				stor_dev = usb_stor_get_dev(devno);
+				if (stor_dev == NULL)
+					break;
+				if (stor_dev->type != DEV_TYPE_UNKNOWN) {
+					ok++;
+					if (devno)
+						printf("\n");
+					debug("print_part of %x\n", devno);
+					print_part(stor_dev);
+				}
+			}
+		} else {
+			devno = simple_strtoul(argv[2], NULL, 16);
+			stor_dev = usb_stor_get_dev(devno);
+			if (stor_dev != NULL &&
+			    stor_dev->type != DEV_TYPE_UNKNOWN) {
+				ok++;
+				debug("print_part of %x\n", devno);
+				print_part(stor_dev);
+			}
+		}
+		if (!ok) {
+			printf("\nno USB devices available\n");
+			return 1;
+		}
+		return 0;
+	}
+	if (strcmp(argv[1], "read") == 0) {
+		if (usb_stor_curr_dev < 0) {
+			printf("no current device selected\n");
+			return 1;
+		}
+		if (argc == 5) {
+			unsigned long addr = simple_strtoul(argv[2], NULL, 16);
+			unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
+			unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
+			unsigned long n;
+			printf("\nUSB read: device %d block # %ld, count %ld"
+				" ... ", usb_stor_curr_dev, blk, cnt);
+			stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
+			n = stor_dev->block_read(stor_dev, blk, cnt,
+						 (ulong *)addr);
+			printf("%ld blocks read: %s\n", n,
+				(n == cnt) ? "OK" : "ERROR");
+			if (n == cnt)
+				return 0;
+			return 1;
+		}
+	}
+	if (strcmp(argv[1], "write") == 0) {
+		if (usb_stor_curr_dev < 0) {
+			printf("no current device selected\n");
+			return 1;
+		}
+		if (argc == 5) {
+			unsigned long addr = simple_strtoul(argv[2], NULL, 16);
+			unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
+			unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
+			unsigned long n;
+			printf("\nUSB write: device %d block # %ld, count %ld"
+				" ... ", usb_stor_curr_dev, blk, cnt);
+			stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
+			n = stor_dev->block_write(stor_dev, blk, cnt,
+						(ulong *)addr);
+			printf("%ld blocks write: %s\n", n,
+				(n == cnt) ? "OK" : "ERROR");
+			if (n == cnt)
+				return 0;
+			return 1;
+		}
+	}
+	if (strncmp(argv[1], "dev", 3) == 0) {
+		if (argc == 3) {
+			int dev = (int)simple_strtoul(argv[2], NULL, 10);
+			printf("\nUSB device %d: ", dev);
+			stor_dev = usb_stor_get_dev(dev);
+			if (stor_dev == NULL) {
+				printf("unknown device\n");
+				return 1;
+			}
+			printf("\n    Device %d: ", dev);
+			dev_print(stor_dev);
+			if (stor_dev->type == DEV_TYPE_UNKNOWN)
+				return 1;
+			usb_stor_curr_dev = dev;
+			printf("... is now current device\n");
+			return 0;
+		} else {
+			printf("\nUSB device %d: ", usb_stor_curr_dev);
+			stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
+			dev_print(stor_dev);
+			if (stor_dev->type == DEV_TYPE_UNKNOWN)
+				return 1;
+			return 0;
+		}
+		return 0;
+	}
+#endif /* CONFIG_USB_STORAGE */
+	return CMD_RET_USAGE;
+}
+
+U_BOOT_CMD(
+	usb,	5,	1,	do_usb,
+	"USB sub-system",
+	"start - start (scan) USB controller\n"
+	"usb reset - reset (rescan) USB controller\n"
+	"usb stop [f] - stop USB [f]=force stop\n"
+	"usb tree - show USB device tree\n"
+	"usb info [dev] - show available USB devices\n"
+	"usb test [dev] [port] [mode] - set USB 2.0 test mode\n"
+	"    (specify port 0 to indicate the device's upstream port)\n"
+	"    Available modes: J, K, S[E0_NAK], P[acket], F[orce_Enable]\n"
+#ifdef CONFIG_USB_STORAGE
+	"usb storage - show details of USB storage devices\n"
+	"usb dev [dev] - show or set current USB storage device\n"
+	"usb part [dev] - print partition table of one or all USB storage"
+	"    devices\n"
+	"usb read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
+	"    to memory address `addr'\n"
+	"usb write addr blk# cnt - write `cnt' blocks starting at block `blk#'\n"
+	"    from memory address `addr'"
+#endif /* CONFIG_USB_STORAGE */
+);
+
+
+#ifdef CONFIG_USB_STORAGE
+U_BOOT_CMD(
+	usbboot,	3,	1,	do_usbboot,
+	"boot from USB device",
+	"loadAddr dev:part"
+);
+#endif /* CONFIG_USB_STORAGE */