auto-install WinUSB device driver

Author: gregjhogan

board/drivers/usb.h

@@ -71,12 +71,15 @@ uint8_t resp[MAX_RESP_LEN];
 #define ENDPOINT_TYPE_BULK 2
 #define ENDPOINT_TYPE_INT 3
 
+// This is an arbitrary value used in bRequest
+#define  MS_VENDOR_CODE 0xFF
+
 //Convert machine byte order to USB byte order
 #define TOUSBORDER(num)\
   (num&0xFF), ((num>>8)&0xFF)
 
 uint8_t device_desc[] = {
-  DSCR_DEVICE_LEN, DSCR_DEVICE_TYPE, 0x00, 0x01, //Length, Type, bcdUSB
+  DSCR_DEVICE_LEN, DSCR_DEVICE_TYPE, 0x00, 0x02, //Length, Type, bcdUSB
   0xFF, 0xFF, 0xFF, 0x40, // Class, Subclass, Protocol, Max Packet Size
   TOUSBORDER(USB_VID), // idVendor
   TOUSBORDER(USB_PID), // idProduct
@@ -165,6 +168,49 @@ uint16_t string_3_desc[] = {
   'n', 'o', 'n', 'e'
 };
 
+#ifdef PANDA
+// WCID (auto install WinUSB driver)
+// https://github.com/pbatard/libwdi/wiki/WCID-Devices
+// https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/winusb-installation#automatic-installation-of--winusb-without-an-inf-file
+uint8_t string_238_desc[] = {
+  0x12, 0x03, // bLength, bDescriptorType
+  'M',0, 'S',0, 'F',0, 'T',0, '1',0, '0',0, '0',0, // qwSignature (MSFT100)
+  MS_VENDOR_CODE, 0x00 // bMS_VendorCode, bPad
+};
+uint8_t winusb_ext_compatid_os_desc[] = {
+  0x28, 0x00, 0x00, 0x00, // dwLength
+  0x00, 0x01, // bcdVersion
+  0x04, 0x00, // wIndex
+  0x01, // bCount
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Reserved
+  0x00, // bFirstInterfaceNumber
+  0x00, // Reserved
+  'W', 'I', 'N', 'U', 'S', 'B', 0x00, 0x00, // compatible ID (WINUSB)
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // subcompatible ID (none)
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // Reserved
+};
+uint8_t winusb_ext_prop_os_desc[] = {
+  0xCC, 0x00, 0x00, 0x00, // dwLength
+  0x00, 0x01, // bcdVersion
+  0x05, 0x00, // wIndex
+  0x02, 0x00, // wCount
+  // first property
+  0x84, 0x00, 0x00, 0x00, // dwSize
+  0x01, 0x00, 0x00, 0x00, // dwPropertyDataType
+  0x28, 0x00, // wPropertyNameLength
+  'D',0, 'e',0, 'v',0, 'i',0, 'c',0, 'e',0, 'I',0, 'n',0, 't',0, 'e',0, 'r',0, 'f',0, 'a',0, 'c',0, 'e',0, 'G',0, 'U',0, 'I',0, 'D',0, 0, 0, // bPropertyName (DeviceInterfaceGUID)
+  0x4E, 0x00, 0x00, 0x00, // dwPropertyDataLength
+  '{',0, 'C',0, 'C',0, 'E',0, '5',0, '2',0, '9',0, '1',0, 'C',0, '-',0, 'A',0, '6',0, '9',0, 'F',0, '-',0, '4',0, '9',0, '9',0, '5',0, '-',0, 'A',0, '4',0, 'C',0, '2',0, '-',0, '2',0, 'A',0, 'E',0, '5',0, '7',0, 'A',0, '5',0, '1',0, 'A',0, 'D',0, 'E',0, '9',0, '}',0, 0, 0, // bPropertyData ({CCE5291C-A69F-4995-A4C2-2AE57A51ADE9})
+  // second property
+  0x3E, 0x00, 0x00, 0x00, // dwSize
+  0x01, 0x00, 0x00, 0x00, // dwPropertyDataType
+  0x0C, 0x00, // wPropertyNameLength
+  'L',0, 'a',0, 'b',0, 'e',0, 'l',0, 0, 0, // bPropertyName (Label)
+  0x24, 0x00, 0x00, 0x00, // dwPropertyDataLength
+  'p',0, 'a',0, 'n',0, 'd',0, 'a',0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 // bPropertyData (panda)
+};
+#endif
+
 // current packet
 USB_Setup_TypeDef setup;
 uint8_t usbdata[0x100];
@@ -345,6 +391,11 @@ void usb_setup() {
                 USB_WritePacket((const uint8_t *)string_3_desc, min(sizeof(string_3_desc), setup.b.wLength.w), 0);
               #endif
               break;
+            #ifdef PANDA
+            case 238:
+              USB_WritePacket((uint8_t*)string_238_desc, min(sizeof(string_238_desc), setup.b.wLength.w), 0);
+              break;
+            #endif
             default:
               // nothing
               USB_WritePacket(0, 0, 0);
@@ -372,6 +423,23 @@ void usb_setup() {
       USB_WritePacket(0, 0, 0);
       USBx_OUTEP(0)->DOEPCTL |= USB_OTG_DOEPCTL_CNAK;
       break;
+    #ifdef PANDA
+    case MS_VENDOR_CODE:
+      switch (setup.b.wIndex.w) {
+        // Extended Compat ID OS Descriptor
+        case 4:
+          USB_WritePacket((uint8_t*)winusb_ext_compatid_os_desc, min(sizeof(winusb_ext_compatid_os_desc), setup.b.wLength.w), 0);
+          break;
+        // Extended Properties OS Descriptor
+        case 5:
+          USB_WritePacket((uint8_t*)winusb_ext_prop_os_desc, min(sizeof(winusb_ext_prop_os_desc), setup.b.wLength.w), 0);
+          break;
+        default:
+          USB_WritePacket(0, 0, 0);
+      }
+      USBx_OUTEP(0)->DOEPCTL |= USB_OTG_DOEPCTL_CNAK;
+      break;
+    #endif
     default:
       resp_len = usb_cb_control_msg(&setup, resp, 1);
       USB_WritePacket(resp, min(resp_len, setup.b.wLength.w), 0);