diff --git a/include/usb.h b/include/usb.h
index 7c47098..4148d67 100644
--- a/include/usb.h
+++ b/include/usb.h
@@ -27,6 +27,7 @@
 #define _USB_H_
 
 #include <usb_defs.h>
+#include <usbdescriptors.h>
 
 /* Everything is aribtrary */
 #define USB_ALTSETTINGALLOC		4
@@ -41,13 +42,6 @@
 
 #define USB_CNTL_TIMEOUT 100 /* 100ms timeout */
 
-/* String descriptor */
-struct usb_string_descriptor {
-	unsigned char	bLength;
-	unsigned char	bDescriptorType;
-	unsigned short	wData[1];
-} __attribute__ ((packed));
-
 /* device request (setup) */
 struct devrequest {
 	unsigned char	requesttype;
@@ -63,47 +57,9 @@
 	unsigned char	bDescriptorType;
 } __attribute__ ((packed));
 
-/* Device descriptor */
-struct usb_device_descriptor {
-	unsigned char	bLength;
-	unsigned char	bDescriptorType;
-	unsigned short	bcdUSB;
-	unsigned char	bDeviceClass;
-	unsigned char	bDeviceSubClass;
-	unsigned char	bDeviceProtocol;
-	unsigned char	bMaxPacketSize0;
-	unsigned short	idVendor;
-	unsigned short	idProduct;
-	unsigned short	bcdDevice;
-	unsigned char	iManufacturer;
-	unsigned char	iProduct;
-	unsigned char	iSerialNumber;
-	unsigned char	bNumConfigurations;
-} __attribute__ ((packed));
-
-/* Endpoint descriptor */
-struct usb_endpoint_descriptor {
-	unsigned char	bLength;
-	unsigned char	bDescriptorType;
-	unsigned char	bEndpointAddress;
-	unsigned char	bmAttributes;
-	unsigned short	wMaxPacketSize;
-	unsigned char	bInterval;
-	unsigned char	bRefresh;
-	unsigned char	bSynchAddress;
-} __attribute__ ((packed)) __attribute__ ((aligned(2)));
-
-/* Interface descriptor */
-struct usb_interface_descriptor {
-	unsigned char	bLength;
-	unsigned char	bDescriptorType;
-	unsigned char	bInterfaceNumber;
-	unsigned char	bAlternateSetting;
-	unsigned char	bNumEndpoints;
-	unsigned char	bInterfaceClass;
-	unsigned char	bInterfaceSubClass;
-	unsigned char	bInterfaceProtocol;
-	unsigned char	iInterface;
+/* Interface */
+struct usb_interface {
+	struct usb_interface_descriptor desc;
 
 	unsigned char	no_of_ep;
 	unsigned char	num_altsetting;
@@ -112,20 +68,12 @@
 	struct usb_endpoint_descriptor ep_desc[USB_MAXENDPOINTS];
 } __attribute__ ((packed));
 
-
-/* Configuration descriptor information.. */
-struct usb_config_descriptor {
-	unsigned char	bLength;
-	unsigned char	bDescriptorType;
-	unsigned short	wTotalLength;
-	unsigned char	bNumInterfaces;
-	unsigned char	bConfigurationValue;
-	unsigned char	iConfiguration;
-	unsigned char	bmAttributes;
-	unsigned char	MaxPower;
+/* Configuration information.. */
+struct usb_config {
+	struct usb_configuration_descriptor desc;
 
 	unsigned char	no_of_if;	/* number of interfaces */
-	struct usb_interface_descriptor if_desc[USB_MAXINTERFACES];
+	struct usb_interface if_desc[USB_MAXINTERFACES];
 } __attribute__ ((packed));
 
 enum {
@@ -156,7 +104,7 @@
 
 	int configno;			/* selected config number */
 	struct usb_device_descriptor descriptor; /* Device Descriptor */
-	struct usb_config_descriptor config; /* config descriptor */
+	struct usb_config config; /* config descriptor */
 
 	int have_langid;		/* whether string_langid is valid yet */
 	int string_langid;		/* language ID for strings */