diff --git a/OvmfPkg/Library/BaseSerialPortLibIoPort/BaseSerialPortLibIoPort.c b/OvmfPkg/Library/BaseSerialPortLibIoPort/BaseSerialPortLibIoPort.c
new file mode 100644
index 0000000..5cf6742
--- /dev/null
+++ b/OvmfPkg/Library/BaseSerialPortLibIoPort/BaseSerialPortLibIoPort.c
@@ -0,0 +1,129 @@
+/** @file
+  Serial Port library instance that outputs to the QEMU debug port.
+
+  This lib does not supoprt input, only output.
+
+  Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2012, Red Hat, Inc.<BR>
+  Portions Copyright (c) 2014, Apple Inc.<BR>
+  This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php.
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+
+#include <Base.h>
+#include <Library/SerialPortLib.h>
+#include <Library/IoLib.h>
+#include <Library/PcdLib.h>
+
+/**
+  Initialize the serial device hardware.
+  
+  If no initialization is required, then return RETURN_SUCCESS.
+  If the serial device was successfully initialized, then return RETURN_SUCCESS.
+  If the serial device could not be initialized, then return RETURN_DEVICE_ERROR.
+  
+  @retval RETURN_SUCCESS        The serial device was initialized.
+  @retval RETURN_DEVICE_ERROR   The serial device could not be initialized.
+
+**/
+RETURN_STATUS
+EFIAPI
+SerialPortInitialize (
+  VOID
+  )
+{
+  return RETURN_SUCCESS;
+}
+
+/**
+  Write data from buffer to serial device. 
+ 
+  Writes NumberOfBytes data bytes from Buffer to the serial device.  
+  The number of bytes actually written to the serial device is returned.
+  If the return value is less than NumberOfBytes, then the write operation failed.
+  If Buffer is NULL, then ASSERT(). 
+  If NumberOfBytes is zero, then return 0.
+
+  @param  Buffer           The pointer to the data buffer to be written.
+  @param  NumberOfBytes    The number of bytes to written to the serial device.
+
+  @retval 0                NumberOfBytes is 0.
+  @retval >0               The number of bytes written to the serial device.  
+                           If this value is less than NumberOfBytes, then the read operation failed.
+
+**/
+UINTN
+EFIAPI
+SerialPortWrite (
+  IN UINT8     *Buffer,
+  IN UINTN     NumberOfBytes
+  )
+{
+  UINTN  Result;
+
+  if (Buffer == NULL) {
+    return 0;
+  }
+
+  Result = NumberOfBytes;
+  while ((NumberOfBytes--) != 0) {
+    IoWrite8 (PcdGet16(PcdDebugIoPort), *Buffer++);
+  }
+
+  return Result;
+}
+
+
+/**
+  Read data from serial device and save the datas in buffer.
+ 
+  Reads NumberOfBytes data bytes from a serial device into the buffer
+  specified by Buffer. The number of bytes actually read is returned. 
+  If the return value is less than NumberOfBytes, then the rest operation failed.
+  If Buffer is NULL, then ASSERT(). 
+  If NumberOfBytes is zero, then return 0.
+
+  @param  Buffer           The pointer to the data buffer to store the data read from the serial device.
+  @param  NumberOfBytes    The number of bytes which will be read.
+
+  @retval 0                Read data failed; No data is to be read.
+  @retval >0               The actual number of bytes read from serial device.
+
+**/
+UINTN
+EFIAPI
+SerialPortRead (
+  OUT UINT8     *Buffer,
+  IN  UINTN     NumberOfBytes
+)
+{
+  return 0;
+}
+
+/**
+  Polls a serial device to see if there is any data waiting to be read.
+
+  Polls a serial device to see if there is any data waiting to be read.
+  If there is data waiting to be read from the serial device, then TRUE is returned.
+  If there is no data waiting to be read from the serial device, then FALSE is returned.
+
+  @retval TRUE             Data is waiting to be read from the serial device.
+  @retval FALSE            There is no data waiting to be read from the serial device.
+
+**/
+BOOLEAN
+EFIAPI
+SerialPortPoll (
+  VOID
+  )
+{
+  return FALSE;
+}
+
diff --git a/OvmfPkg/Library/BaseSerialPortLibIoPort/BaseSerialPortLibIoPort.inf b/OvmfPkg/Library/BaseSerialPortLibIoPort/BaseSerialPortLibIoPort.inf
new file mode 100644
index 0000000..7a66e09
--- /dev/null
+++ b/OvmfPkg/Library/BaseSerialPortLibIoPort/BaseSerialPortLibIoPort.inf
@@ -0,0 +1,46 @@
+## @file
+#  Serial Port library instance that outputs to the QEMU debug port.
+#
+#  This lib does not supoprt input, only output.
+#
+#  Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2012, Red Hat, Inc.<BR>
+#  Portions Copyright (c) 2014, Apple Inc.<BR>
+#
+#  This program and the accompanying materials
+#  are licensed and made available under the terms and conditions of the BSD License
+#  which accompanies this distribution. The full text of the license may be found at
+#  http://opensource.org/licenses/bsd-license.php.
+#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = BaseSerialPortLibIoPort
+  FILE_GUID                      = 0AD804E3-1E30-11E4-8915-C82A145113CC
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = SerialPortLib
+
+
+#
+#  VALID_ARCHITECTURES           = IA32 X64 IPF EBC
+#
+
+[Sources]
+  BaseSerialPortLibIoPort.c
+
+
+[Packages]
+  MdePkg/MdePkg.dec
+  OvmfPkg/OvmfPkg.dec
+
+[LibraryClasses]
+  IoLib
+  PcdLib
+  
+[Pcd]
+  gUefiOvmfPkgTokenSpaceGuid.PcdDebugIoPort                ## CONSUMES