diff --git a/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c b/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c
new file mode 100644
index 0000000000..84299ca783
--- /dev/null
+++ b/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c
@@ -0,0 +1,269 @@
+/** @file
+  Base Debug library instance for QEMU debug port.
+  It uses PrintLib to send debug messages to a fixed I/O port.
+
+  Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2012, Red Hat, 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 <Uefi.h>
+#include <Library/DebugLib.h>
+#include <Library/BaseLib.h>
+#include <Library/IoLib.h>
+#include <Library/PrintLib.h>
+#include <Library/PcdLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugPrintErrorLevelLib.h>
+
+//
+// Define the maximum debug and assert message length that this library supports
+//
+#define MAX_DEBUG_MESSAGE_LENGTH  0x100
+
+/**
+  This constructor function does not have to do anything.
+
+  @retval EFI_SUCCESS   The constructor always returns RETURN_SUCCESS.
+
+**/
+RETURN_STATUS
+EFIAPI
+PlatformDebugLibIoPortConstructor (
+  VOID
+  )
+{
+  return EFI_SUCCESS;
+}
+
+/**
+  Prints a debug message to the debug output device if the specified error level is enabled.
+
+  If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function
+  GetDebugPrintErrorLevel (), then print the message specified by Format and the
+  associated variable argument list to the debug output device.
+
+  If Format is NULL, then ASSERT().
+
+  @param  ErrorLevel  The error level of the debug message.
+  @param  Format      Format string for the debug message to print.
+  @param  ...         Variable argument list whose contents are accessed
+                      based on the format string specified by Format.
+
+**/
+VOID
+EFIAPI
+DebugPrint (
+  IN  UINTN        ErrorLevel,
+  IN  CONST CHAR8  *Format,
+  ...
+  )
+{
+  CHAR8    Buffer[MAX_DEBUG_MESSAGE_LENGTH];
+  VA_LIST  Marker;
+  UINT8    *Ptr;
+
+  //
+  // If Format is NULL, then ASSERT().
+  //
+  ASSERT (Format != NULL);
+
+  //
+  // Check driver debug mask value and global mask
+  //
+  if ((ErrorLevel & GetDebugPrintErrorLevel ()) == 0) {
+    return;
+  }
+
+  //
+  // Convert the DEBUG() message to an ASCII String
+  //
+  VA_START (Marker, Format);
+  AsciiVSPrint (Buffer, sizeof (Buffer), Format, Marker);
+  VA_END (Marker);
+
+  //
+  // Send the print string to the debug I/O port
+  //
+  for (Ptr = (UINT8 *) Buffer; *Ptr; Ptr++) {
+    IoWrite8 (PcdGet16(PcdDebugIoPort), *Ptr);
+  }
+}
+
+
+/**
+  Prints an assert message containing a filename, line number, and description.
+  This may be followed by a breakpoint or a dead loop.
+
+  Print a message of the form "ASSERT <FileName>(<LineNumber>): <Description>\n"
+  to the debug output device.  If DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED bit of
+  PcdDebugProperyMask is set then CpuBreakpoint() is called. Otherwise, if
+  DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED bit of PcdDebugProperyMask is set then
+  CpuDeadLoop() is called.  If neither of these bits are set, then this function
+  returns immediately after the message is printed to the debug output device.
+  DebugAssert() must actively prevent recursion.  If DebugAssert() is called while
+  processing another DebugAssert(), then DebugAssert() must return immediately.
+
+  If FileName is NULL, then a <FileName> string of "(NULL) Filename" is printed.
+  If Description is NULL, then a <Description> string of "(NULL) Description" is printed.
+
+  @param  FileName     The pointer to the name of the source file that generated the assert condition.
+  @param  LineNumber   The line number in the source file that generated the assert condition
+  @param  Description  The pointer to the description of the assert condition.
+
+**/
+VOID
+EFIAPI
+DebugAssert (
+  IN CONST CHAR8  *FileName,
+  IN UINTN        LineNumber,
+  IN CONST CHAR8  *Description
+  )
+{
+  CHAR8  Buffer[MAX_DEBUG_MESSAGE_LENGTH];
+  UINT8 *Ptr;
+
+  //
+  // Generate the ASSERT() message in Ascii format
+  //
+  AsciiSPrint (Buffer, sizeof (Buffer), "ASSERT %a(%d): %a\n", FileName, LineNumber, Description);
+
+  //
+  // Send the print string to the Console Output device
+  //
+  for (Ptr = (UINT8 *) Buffer; *Ptr; Ptr++) {
+    IoWrite8 (PcdGet16(PcdDebugIoPort), *Ptr);
+  }
+
+  //
+  // Generate a Breakpoint, DeadLoop, or NOP based on PCD settings
+  //
+  if ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED) != 0) {
+    CpuBreakpoint ();
+  } else if ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED) != 0) {
+    CpuDeadLoop ();
+  }
+}
+
+
+/**
+  Fills a target buffer with PcdDebugClearMemoryValue, and returns the target buffer.
+
+  This function fills Length bytes of Buffer with the value specified by
+  PcdDebugClearMemoryValue, and returns Buffer.
+
+  If Buffer is NULL, then ASSERT().
+  If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+  @param   Buffer  The pointer to the target buffer to be filled with PcdDebugClearMemoryValue.
+  @param   Length  The number of bytes in Buffer to fill with zeros PcdDebugClearMemoryValue.
+
+  @return  Buffer  The pointer to the target buffer filled with PcdDebugClearMemoryValue.
+
+**/
+VOID *
+EFIAPI
+DebugClearMemory (
+  OUT VOID  *Buffer,
+  IN UINTN  Length
+  )
+{
+  //
+  // If Buffer is NULL, then ASSERT().
+  //
+  ASSERT (Buffer != NULL);
+
+  //
+  // SetMem() checks for the the ASSERT() condition on Length and returns Buffer
+  //
+  return SetMem (Buffer, Length, PcdGet8(PcdDebugClearMemoryValue));
+}
+
+
+/**
+  Returns TRUE if ASSERT() macros are enabled.
+
+  This function returns TRUE if the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of
+  PcdDebugProperyMask is set.  Otherwise FALSE is returned.
+
+  @retval  TRUE    The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is set.
+  @retval  FALSE   The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is clear.
+
+**/
+BOOLEAN
+EFIAPI
+DebugAssertEnabled (
+  VOID
+  )
+{
+  return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED) != 0);
+}
+
+
+/**
+  Returns TRUE if DEBUG() macros are enabled.
+
+  This function returns TRUE if the DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of
+  PcdDebugProperyMask is set.  Otherwise FALSE is returned.
+
+  @retval  TRUE    The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is set.
+  @retval  FALSE   The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is clear.
+
+**/
+BOOLEAN
+EFIAPI
+DebugPrintEnabled (
+  VOID
+  )
+{
+  return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_PRINT_ENABLED) != 0);
+}
+
+
+/**
+  Returns TRUE if DEBUG_CODE() macros are enabled.
+
+  This function returns TRUE if the DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of
+  PcdDebugProperyMask is set.  Otherwise FALSE is returned.
+
+  @retval  TRUE    The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is set.
+  @retval  FALSE   The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is clear.
+
+**/
+BOOLEAN
+EFIAPI
+DebugCodeEnabled (
+  VOID
+  )
+{
+  return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_CODE_ENABLED) != 0);
+}
+
+
+/**
+  Returns TRUE if DEBUG_CLEAR_MEMORY() macro is enabled.
+
+  This function returns TRUE if the DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of
+  PcdDebugProperyMask is set.  Otherwise FALSE is returned.
+
+  @retval  TRUE    The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is set.
+  @retval  FALSE   The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is clear.
+
+**/
+BOOLEAN
+EFIAPI
+DebugClearMemoryEnabled (
+  VOID
+  )
+{
+  return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED) != 0);
+}
+
diff --git a/OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf b/OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
new file mode 100644
index 0000000000..a70c7b5360
--- /dev/null
+++ b/OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
@@ -0,0 +1,50 @@
+## @file
+#  Instance of Debug Library for the QEMU debug console port.
+#  It uses Print Library to produce formatted output strings.
+#
+#  Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2012, Red Hat, 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                      = PlatformDebugLibIoPort
+  FILE_GUID                      = DF934DA3-CD31-49FE-AF50-B3C87C79325F
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = DebugLib
+  CONSTRUCTOR                    = PlatformDebugLibIoPortConstructor
+
+#
+#  VALID_ARCHITECTURES           = IA32 X64 IPF EBC
+#
+
+[Sources]
+  DebugLib.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+  OvmfPkg/OvmfPkg.dec
+
+[LibraryClasses]
+  BaseMemoryLib
+  IoLib
+  PcdLib
+  PrintLib
+  BaseLib
+  DebugPrintErrorLevelLib
+
+[Pcd]
+  gUefiOvmfPkgTokenSpaceGuid.PcdDebugIoPort                ## CONSUMES
+  gEfiMdePkgTokenSpaceGuid.PcdDebugClearMemoryValue        ## CONSUMES
+  gEfiMdePkgTokenSpaceGuid.PcdDebugPropertyMask            ## CONSUMES
+
diff --git a/OvmfPkg/OvmfPkg.dec b/OvmfPkg/OvmfPkg.dec
index 2a01968e1b..13a2a430f9 100644
--- a/OvmfPkg/OvmfPkg.dec
+++ b/OvmfPkg/OvmfPkg.dec
@@ -46,6 +46,9 @@
   gUefiOvmfPkgTokenSpaceGuid.PcdOvmfMemFvBase|0x0|UINT32|0
   gUefiOvmfPkgTokenSpaceGuid.PcdOvmfMemFvSize|0x0|UINT32|1
 
+  ## This flag is used to control the destination port for PlatformDebugLibIoPort
+  gUefiOvmfPkgTokenSpaceGuid.PcdDebugIoPort|0x402|UINT16|4
+
 [PcdsDynamic, PcdsDynamicEx]
   gUefiOvmfPkgTokenSpaceGuid.PcdEmuVariableEvent|0|UINT64|2
 
diff --git a/OvmfPkg/OvmfPkgIa32.dsc b/OvmfPkg/OvmfPkgIa32.dsc
index f65efb0bd0..1414218953 100644
--- a/OvmfPkg/OvmfPkgIa32.dsc
+++ b/OvmfPkg/OvmfPkgIa32.dsc
@@ -122,7 +122,11 @@
 !endif
 
 [LibraryClasses.common.SEC]
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   ReportStatusCodeLib|MdeModulePkg/Library/PeiReportStatusCodeLib/PeiReportStatusCodeLib.inf
   ExtractGuidedSectionLib|MdePkg/Library/BaseExtractGuidedSectionLib/BaseExtractGuidedSectionLib.inf
 !ifdef $(SOURCE_DEBUG_ENABLE)
@@ -142,7 +146,11 @@
   ReportStatusCodeLib|MdeModulePkg/Library/PeiReportStatusCodeLib/PeiReportStatusCodeLib.inf
   OemHookStatusCodeLib|MdeModulePkg/Library/OemHookStatusCodeLibNull/OemHookStatusCodeLibNull.inf
   PeCoffGetEntryPointLib|MdePkg/Library/BasePeCoffGetEntryPointLib/BasePeCoffGetEntryPointLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   PeCoffLib|MdePkg/Library/BasePeCoffLib/BasePeCoffLib.inf
 
 [LibraryClasses.common.PEIM]
@@ -154,7 +162,11 @@
   ReportStatusCodeLib|MdeModulePkg/Library/PeiReportStatusCodeLib/PeiReportStatusCodeLib.inf
   OemHookStatusCodeLib|MdeModulePkg/Library/OemHookStatusCodeLibNull/OemHookStatusCodeLibNull.inf
   PeCoffGetEntryPointLib|MdePkg/Library/BasePeCoffGetEntryPointLib/BasePeCoffGetEntryPointLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   PeCoffLib|MdePkg/Library/BasePeCoffLib/BasePeCoffLib.inf
   PeiResourcePublicationLib|MdePkg/Library/PeiResourcePublicationLib/PeiResourcePublicationLib.inf
   ExtractGuidedSectionLib|MdePkg/Library/PeiExtractGuidedSectionLib/PeiExtractGuidedSectionLib.inf
@@ -167,7 +179,11 @@
   DxeCoreEntryPoint|MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.inf
   MemoryAllocationLib|MdeModulePkg/Library/DxeCoreMemoryAllocationLib/DxeCoreMemoryAllocationLib.inf
   ReportStatusCodeLib|MdeModulePkg/Library/DxeReportStatusCodeLib/DxeReportStatusCodeLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
   ExtractGuidedSectionLib|MdePkg/Library/DxeExtractGuidedSectionLib/DxeExtractGuidedSectionLib.inf
 !ifdef $(SOURCE_DEBUG_ENABLE)
@@ -179,7 +195,11 @@
   DxeCoreEntryPoint|MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.inf
   MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
   ReportStatusCodeLib|MdeModulePkg/Library/RuntimeDxeReportStatusCodeLib/RuntimeDxeReportStatusCodeLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf
   UefiRuntimeLib|MdePkg/Library/UefiRuntimeLib/UefiRuntimeLib.inf
   DxeServicesTableLib|MdePkg/Library/DxeServicesTableLib/DxeServicesTableLib.inf
@@ -192,7 +212,11 @@
   DxeCoreEntryPoint|MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.inf
   MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
   ReportStatusCodeLib|MdeModulePkg/Library/DxeReportStatusCodeLib/DxeReportStatusCodeLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
   UefiScsiLib|MdePkg/Library/UefiScsiLib/UefiScsiLib.inf
 
@@ -203,7 +227,11 @@
   ReportStatusCodeLib|MdeModulePkg/Library/DxeReportStatusCodeLib/DxeReportStatusCodeLib.inf
   DxeServicesTableLib|MdePkg/Library/DxeServicesTableLib/DxeServicesTableLib.inf
   UefiScsiLib|MdePkg/Library/UefiScsiLib/UefiScsiLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   NetLib|MdeModulePkg/Library/DxeNetLib/DxeNetLib.inf
   IpIoLib|MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.inf
   UdpIoLib|MdeModulePkg/Library/DxeUdpIoLib/DxeUdpIoLib.inf
@@ -213,7 +241,11 @@
 [LibraryClasses.common.UEFI_APPLICATION]
   HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
   MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
 
 ################################################################################
 #
diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc
index 213854a16d..957f394bc3 100644
--- a/OvmfPkg/OvmfPkgIa32X64.dsc
+++ b/OvmfPkg/OvmfPkgIa32X64.dsc
@@ -122,7 +122,11 @@
 !endif
 
 [LibraryClasses.common.SEC]
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   ReportStatusCodeLib|MdeModulePkg/Library/PeiReportStatusCodeLib/PeiReportStatusCodeLib.inf
   ExtractGuidedSectionLib|MdePkg/Library/BaseExtractGuidedSectionLib/BaseExtractGuidedSectionLib.inf
 !ifdef $(SOURCE_DEBUG_ENABLE)
@@ -142,7 +146,11 @@
   ReportStatusCodeLib|MdeModulePkg/Library/PeiReportStatusCodeLib/PeiReportStatusCodeLib.inf
   OemHookStatusCodeLib|MdeModulePkg/Library/OemHookStatusCodeLibNull/OemHookStatusCodeLibNull.inf
   PeCoffGetEntryPointLib|MdePkg/Library/BasePeCoffGetEntryPointLib/BasePeCoffGetEntryPointLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   PeCoffLib|MdePkg/Library/BasePeCoffLib/BasePeCoffLib.inf
 
 [LibraryClasses.common.PEIM]
@@ -154,7 +162,11 @@
   ReportStatusCodeLib|MdeModulePkg/Library/PeiReportStatusCodeLib/PeiReportStatusCodeLib.inf
   OemHookStatusCodeLib|MdeModulePkg/Library/OemHookStatusCodeLibNull/OemHookStatusCodeLibNull.inf
   PeCoffGetEntryPointLib|MdePkg/Library/BasePeCoffGetEntryPointLib/BasePeCoffGetEntryPointLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   PeCoffLib|MdePkg/Library/BasePeCoffLib/BasePeCoffLib.inf
   PeiResourcePublicationLib|MdePkg/Library/PeiResourcePublicationLib/PeiResourcePublicationLib.inf
   ExtractGuidedSectionLib|MdePkg/Library/PeiExtractGuidedSectionLib/PeiExtractGuidedSectionLib.inf
@@ -167,7 +179,11 @@
   DxeCoreEntryPoint|MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.inf
   MemoryAllocationLib|MdeModulePkg/Library/DxeCoreMemoryAllocationLib/DxeCoreMemoryAllocationLib.inf
   ReportStatusCodeLib|MdeModulePkg/Library/DxeReportStatusCodeLib/DxeReportStatusCodeLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
   ExtractGuidedSectionLib|MdePkg/Library/DxeExtractGuidedSectionLib/DxeExtractGuidedSectionLib.inf
 !ifdef $(SOURCE_DEBUG_ENABLE)
@@ -179,7 +195,11 @@
   DxeCoreEntryPoint|MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.inf
   MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
   ReportStatusCodeLib|MdeModulePkg/Library/RuntimeDxeReportStatusCodeLib/RuntimeDxeReportStatusCodeLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf
   UefiRuntimeLib|MdePkg/Library/UefiRuntimeLib/UefiRuntimeLib.inf
   DxeServicesTableLib|MdePkg/Library/DxeServicesTableLib/DxeServicesTableLib.inf
@@ -192,7 +212,11 @@
   DxeCoreEntryPoint|MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.inf
   MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
   ReportStatusCodeLib|MdeModulePkg/Library/DxeReportStatusCodeLib/DxeReportStatusCodeLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
   UefiScsiLib|MdePkg/Library/UefiScsiLib/UefiScsiLib.inf
 
@@ -203,7 +227,11 @@
   ReportStatusCodeLib|MdeModulePkg/Library/DxeReportStatusCodeLib/DxeReportStatusCodeLib.inf
   DxeServicesTableLib|MdePkg/Library/DxeServicesTableLib/DxeServicesTableLib.inf
   UefiScsiLib|MdePkg/Library/UefiScsiLib/UefiScsiLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   NetLib|MdeModulePkg/Library/DxeNetLib/DxeNetLib.inf
   IpIoLib|MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.inf
   UdpIoLib|MdeModulePkg/Library/DxeUdpIoLib/DxeUdpIoLib.inf
@@ -213,7 +241,11 @@
 [LibraryClasses.common.UEFI_APPLICATION]
   HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
   MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
 
 ################################################################################
 #
diff --git a/OvmfPkg/OvmfPkgX64.dsc b/OvmfPkg/OvmfPkgX64.dsc
index ee33e83270..b56c551f74 100644
--- a/OvmfPkg/OvmfPkgX64.dsc
+++ b/OvmfPkg/OvmfPkgX64.dsc
@@ -122,7 +122,11 @@
 !endif
 
 [LibraryClasses.common.SEC]
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   ReportStatusCodeLib|MdeModulePkg/Library/PeiReportStatusCodeLib/PeiReportStatusCodeLib.inf
   ExtractGuidedSectionLib|MdePkg/Library/BaseExtractGuidedSectionLib/BaseExtractGuidedSectionLib.inf
 !ifdef $(SOURCE_DEBUG_ENABLE)
@@ -142,7 +146,11 @@
   ReportStatusCodeLib|MdeModulePkg/Library/PeiReportStatusCodeLib/PeiReportStatusCodeLib.inf
   OemHookStatusCodeLib|MdeModulePkg/Library/OemHookStatusCodeLibNull/OemHookStatusCodeLibNull.inf
   PeCoffGetEntryPointLib|MdePkg/Library/BasePeCoffGetEntryPointLib/BasePeCoffGetEntryPointLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   PeCoffLib|MdePkg/Library/BasePeCoffLib/BasePeCoffLib.inf
 
 [LibraryClasses.common.PEIM]
@@ -154,7 +162,11 @@
   ReportStatusCodeLib|MdeModulePkg/Library/PeiReportStatusCodeLib/PeiReportStatusCodeLib.inf
   OemHookStatusCodeLib|MdeModulePkg/Library/OemHookStatusCodeLibNull/OemHookStatusCodeLibNull.inf
   PeCoffGetEntryPointLib|MdePkg/Library/BasePeCoffGetEntryPointLib/BasePeCoffGetEntryPointLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   PeCoffLib|MdePkg/Library/BasePeCoffLib/BasePeCoffLib.inf
   PeiResourcePublicationLib|MdePkg/Library/PeiResourcePublicationLib/PeiResourcePublicationLib.inf
   ExtractGuidedSectionLib|MdePkg/Library/PeiExtractGuidedSectionLib/PeiExtractGuidedSectionLib.inf
@@ -167,7 +179,11 @@
   DxeCoreEntryPoint|MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.inf
   MemoryAllocationLib|MdeModulePkg/Library/DxeCoreMemoryAllocationLib/DxeCoreMemoryAllocationLib.inf
   ReportStatusCodeLib|MdeModulePkg/Library/DxeReportStatusCodeLib/DxeReportStatusCodeLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
   ExtractGuidedSectionLib|MdePkg/Library/DxeExtractGuidedSectionLib/DxeExtractGuidedSectionLib.inf
 !ifdef $(SOURCE_DEBUG_ENABLE)
@@ -179,7 +195,11 @@
   DxeCoreEntryPoint|MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.inf
   MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
   ReportStatusCodeLib|MdeModulePkg/Library/RuntimeDxeReportStatusCodeLib/RuntimeDxeReportStatusCodeLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf
   UefiRuntimeLib|MdePkg/Library/UefiRuntimeLib/UefiRuntimeLib.inf
   DxeServicesTableLib|MdePkg/Library/DxeServicesTableLib/DxeServicesTableLib.inf
@@ -192,7 +212,11 @@
   DxeCoreEntryPoint|MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.inf
   MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
   ReportStatusCodeLib|MdeModulePkg/Library/DxeReportStatusCodeLib/DxeReportStatusCodeLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
   UefiScsiLib|MdePkg/Library/UefiScsiLib/UefiScsiLib.inf
 
@@ -203,7 +227,11 @@
   ReportStatusCodeLib|MdeModulePkg/Library/DxeReportStatusCodeLib/DxeReportStatusCodeLib.inf
   DxeServicesTableLib|MdePkg/Library/DxeServicesTableLib/DxeServicesTableLib.inf
   UefiScsiLib|MdePkg/Library/UefiScsiLib/UefiScsiLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
   NetLib|MdeModulePkg/Library/DxeNetLib/DxeNetLib.inf
   IpIoLib|MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.inf
   UdpIoLib|MdeModulePkg/Library/DxeUdpIoLib/DxeUdpIoLib.inf
@@ -213,7 +241,11 @@
 [LibraryClasses.common.UEFI_APPLICATION]
   HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
   MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
+!ifdef $(DEBUG_ON_SERIAL_PORT)
   DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!else
+  DebugLib|OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+!endif
 
 ################################################################################
 #