[PATCH v3 2/6] MdeModulePkg: Add GUID/flags to implement BitField support

[Dandan Bi <dandan.bi@intel.com>]

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=545

Cc: Eric Dong <eric.dong@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
---
 MdeModulePkg/Include/Guid/MdeModuleHii.h | 20 +++++++++++++++++++-
 MdeModulePkg/MdeModulePkg.dec            |  4 ++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/MdeModulePkg/Include/Guid/MdeModuleHii.h b/MdeModulePkg/Include/Guid/MdeModuleHii.h
index 81821da..4ef4db8 100644
--- a/MdeModulePkg/Include/Guid/MdeModuleHii.h
+++ b/MdeModulePkg/Include/Guid/MdeModuleHii.h
@@ -1,9 +1,9 @@
 /** @file
   EDKII extented HII IFR guid opcodes.
 
-Copyright (c) 2006 - 2010, 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 that accompanies this distribution.  
 The full text of the license may be found at
 http://opensource.org/licenses/bsd-license.php.                                            
 
@@ -209,12 +209,30 @@ typedef struct _EFI_IFR_GUID_VAREQNAME {
   /// The the Unicode String will be used as a EFI Variable Name.
   ///
   UINT16              NameId;
 } EFI_IFR_GUID_VAREQNAME;
 
+///
+/// EDKII implementation extension GUID, used to indaicate there are bit fields in the varstore.
+///
+#define EFI_IFR_BITVARSTORE_GUID \
+  {0x82DDD68B, 0x9163, 0x4187, {0x9B, 0x27, 0x20, 0xA8, 0xFD, 0x60,0xA7, 0x1D}}
+
+///
+/// EDKII implementation extension flags, used to indaicate the disply style and bit width for bit filed storage.
+/// Two high bits for display style and the low six bits for bit width.
+///
+#define EFI_IFR_DISPLAY_BIT            0xC0
+#define EFI_IFR_DISPLAY_INT_DEC_BIT    0x00
+#define EFI_IFR_DISPLAY_UINT_DEC_BIT   0x40
+#define EFI_IFR_DISPLAY_UINT_HEX_BIT   0x80
+
+#define EFI_IFR_NUMERIC_SIZE_BIT       0x3F
+
 #pragma pack()
 
 extern EFI_GUID gEfiIfrTianoGuid;
 extern EFI_GUID gEfiIfrFrameworkGuid;
+extern EFI_GUID gEfiIfrBitvarstoreGuid;
 
 #endif
 
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
index 593bff3..8c8d76e 100644
--- a/MdeModulePkg/MdeModulePkg.dec
+++ b/MdeModulePkg/MdeModulePkg.dec
@@ -182,10 +182,14 @@
 
   ## Guid for EDKII implementation GUIDed opcodes
   #  Include/Guid/MdeModuleHii.h
   gEfiIfrTianoGuid      = { 0xf0b1735, 0x87a0, 0x4193, {0xb2, 0x66, 0x53, 0x8c, 0x38, 0xaf, 0x48, 0xce }}
 
+  ## Guid for EDKII implementation extension, used to indaicate there are bit fields in the varstore.
+  #  Include/Guid/MdeModuleHii.h
+  gEfiIfrBitvarstoreGuid  = {0x82DDD68B, 0x9163, 0x4187, {0x9B, 0x27, 0x20, 0xA8, 0xFD, 0x60,0xA7, 0x1D}}
+
   ## Guid for Framework vfr GUIDed opcodes.
   #  Include/Guid/MdeModuleHii.h
   gEfiIfrFrameworkGuid  = { 0x31ca5d1a, 0xd511, 0x4931, { 0xb7, 0x82, 0xae, 0x6b, 0x2b, 0x17, 0x8c, 0xd7 }}
 
   ## Guid to specify the System Non Volatile FV
-- 
1.9.5.msysgit.1