--- /dev/null
+/** @file\r
+ Define the SerialDxe GUID.\r
+\r
+ Copyright (c) 2019, Citrix Systems, Inc.\r
+\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
+**/\r
+\r
+#ifndef __SERIAL_PORT_LIB_VENDOR_H__\r
+#define __SERIAL_PORT_LIB_VENDOR_H__\r
+\r
+#define EDKII_SERIAL_PORT_LIB_VENDOR_GUID { \\r
+ 0xD3987D4B, 0x971A, 0x435F, \\r
+ { 0x8C, 0xAF, 0x49, 0x67, 0xEB, 0x62, 0x72, 0x41 } \\r
+ }\r
+\r
+extern EFI_GUID gEdkiiSerialPortLibVendorGuid;\r
+\r
+#endif // __SERIAL_PORT_LIB_VENDOR_H__\r