Add the SD/MMC interface GUID definition per PI 1.6 spec.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
---
 MdePkg/Include/Protocol/DiskInfo.h | 13 +++++++++++--
 MdePkg/MdePkg.dec                  |  6 ++++++
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/MdePkg/Include/Protocol/DiskInfo.h b/MdePkg/Include/Protocol/DiskInfo.h
index a094bc8251..09fe34ada6 100644
--- a/MdePkg/Include/Protocol/DiskInfo.h
+++ b/MdePkg/Include/Protocol/DiskInfo.h
@@ -2,7 +2,7 @@
   Provides the basic interfaces to abstract platform information regarding an 
   IDE controller.  
 
-  Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2006 - 2017, 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
@@ -12,7 +12,7 @@
   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
   @par Revision Reference:
-  This Protocol is defined in UEFI Platform Initialization Specification 1.2 
+  This Protocol is defined in UEFI Platform Initialization Specification 1.6
   Volume 5: Standards
   
 **/
@@ -81,6 +81,14 @@ typedef struct _EFI_DISK_INFO_PROTOCOL  EFI_DISK_INFO_PROTOCOL;
     0x4b3029cc, 0x6b98, 0x47fb, { 0xbc, 0x96, 0x76, 0xdc, 0xb8, 0x4, 0x41, 0xf0 } \
   }
 
+///
+/// Global ID for an SD/MMC interface.  Used to fill in EFI_DISK_INFO_PROTOCOL.Interface
+///
+#define EFI_DISK_INFO_SD_MMC_INTERFACE_GUID \
+  { \
+    0x8deec992, 0xd39c, 0x4a5c, { 0xab, 0x6b, 0x98, 0x6e, 0x14, 0x24, 0x2b, 0x9d } \
+  }
+
 /**
   Provides inquiry information for the controller type.
   
@@ -214,5 +222,6 @@ extern EFI_GUID gEfiDiskInfoUsbInterfaceGuid;
 extern EFI_GUID gEfiDiskInfoAhciInterfaceGuid;
 extern EFI_GUID gEfiDiskInfoNvmeInterfaceGuid;
 extern EFI_GUID gEfiDiskInfoUfsInterfaceGuid;
+extern EFI_GUID gEfiDiskInfoSdMmcInterfaceGuid;
 
 #endif
diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
index 2bdfebf36f..0bdf221687 100644
--- a/MdePkg/MdePkg.dec
+++ b/MdePkg/MdePkg.dec
@@ -746,6 +746,12 @@
   gEfiGraphicsDeviceInfoHobGuid     = { 0xe5cb2ac9, 0xd35d, 0x4430, { 0x93, 0x6e, 0x1d, 0xe3, 0x32, 0x47, 0x8d, 0xe7 }}
 
   #
+  # GUID defined in PI1.6
+  #
+  ## Include/Guid/DiskInfo.h
+  gEfiDiskInfoSdMmcInterfaceGuid  = { 0x8deec992, 0xd39c, 0x4a5c, { 0xab, 0x6b, 0x98, 0x6e, 0x14, 0x24, 0x2b, 0x9d }}
+
+  #
   # GUID defined in Windows UEFI Firmware Update Platform doc
   #
   ## Include/IndustryStandard/WindowsUxCapsule.h
-- 
2.12.0.windows.1

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