4 files changed, 29 insertions, 5 deletions
diff --git a/MdePkg/Library/BasePostCodeLibPort80/BasePostCodeLibPort80.inf b/MdePkg/Library/BasePostCodeLibPort80/BasePostCodeLibPort80.inf
index e2f0be551d..ebe1158728 100644
--- a/MdePkg/Library/BasePostCodeLibPort80/BasePostCodeLibPort80.inf
+++ b/MdePkg/Library/BasePostCodeLibPort80/BasePostCodeLibPort80.inf
@@ -3,7 +3,7 @@
 #
 #  Post Code Library that writes post code values to I/O port 0x80.
 #
-#  Copyright (c) 2007 - 2014, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR>
 #
 #  This program and the accompanying materials
 #  are licensed and made available under the terms and conditions of the BSD License
@@ -40,8 +40,9 @@
 [LibraryClasses]
   IoLib
   PcdLib
+  DebugLib
 
 
 [Pcd]
   gEfiMdePkgTokenSpaceGuid.PcdPostCodePropertyMask  ## CONSUMES
-
+  gEfiMdePkgTokenSpaceGuid.PcdPort80DataWidth ## CONSUMES
diff --git a/MdePkg/Library/BasePostCodeLibPort80/PostCode.c b/MdePkg/Library/BasePostCodeLibPort80/PostCode.c
index 925c7404bc..f1fdbabce4 100644
--- a/MdePkg/Library/BasePostCodeLibPort80/PostCode.c
+++ b/MdePkg/Library/BasePostCodeLibPort80/PostCode.c
@@ -1,7 +1,7 @@
 /** @file
   Post Code Library instance that writes post code values to I/O port 0x80.
 
-  Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<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        
@@ -17,6 +17,7 @@
 #include <Library/PostCodeLib.h>
 #include <Library/PcdLib.h>
 #include <Library/IoLib.h>
+#include <Library/DebugLib.h>
 
 /**
   Sends an 32-bit value to a POST card.
@@ -42,7 +43,24 @@ PostCode (
   IN UINT32  Value
   )
 {
-  IoWrite8 (0x80, (UINT8)(Value));
+  switch (PcdGet8 (PcdPort80DataWidth)) {
+  case 8:
+    IoWrite8 (0x80, (UINT8)(Value));
+    break;
+  case 16:
+    IoWrite16 (0x80, (UINT16)(Value));
+    break;
+  case 32:
+    IoWrite32 (0x80, Value);
+    break;
+  default:
+    //
+    // Assert on the invalid data width
+    //
+    ASSERT (FALSE);
+    break;
+  }
+  
   return Value;
 }
 
@@ -78,7 +96,7 @@ PostCodeWithDescription (
   IN CONST CHAR8  *Description  OPTIONAL
   )
 {
-  IoWrite8 (0x80, (UINT8)(Value));
+  PostCode (Value);
   return Value;
 }
 
diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
index 337059a6a6..7ab0cbbcfb 100644
--- a/MdePkg/MdePkg.dec
+++ b/MdePkg/MdePkg.dec
@@ -1938,6 +1938,11 @@
   # @Expression  0x80000002 | (gEfiMdePkgTokenSpaceGuid.PcdPostCodePropertyMask & 0xFC) == 0
   gEfiMdePkgTokenSpaceGuid.PcdPostCodePropertyMask|0|UINT8|0x0000000b
 
+  ## The bit width of data to be written to Port80. The default value is 8.
+  # @Prompt Port80 Data Width
+  # @ValidList  0x80000001 | 8, 16, 32
+  gEfiMdePkgTokenSpaceGuid.PcdPort80DataWidth|8|UINT8|0x0000002d
+
   ## This value is used to configure X86 Processor FSB clock.
   # @Prompt FSB Clock.
   gEfiMdePkgTokenSpaceGuid.PcdFSBClock|200000000|UINT32|0x0000000c
diff --git a/MdePkg/MdePkg.uni b/MdePkg/MdePkg.uni
index 38211344e0..5a5126213e 100644
--- a/MdePkg/MdePkg.uni
+++ b/MdePkg/MdePkg.uni