[edk2] [PATCH v2 2/2] MdeModulePkg/VarCheckHii: Enhance VarCheckHiiLib to support bit check

Dandan Bi posted 2 patches 7 years, 1 month ago
There is a newer version of this series
[edk2] [PATCH v2 2/2] MdeModulePkg/VarCheckHii: Enhance VarCheckHiiLib to support bit check
Posted by Dandan Bi 7 years, 1 month ago
V2:
(1)Remove the VarOffsetBitLevel/StorageWidthBitLevel to reduce the final
VarCheckBinSize and update the implementation accordingly.

(2)Update the VAR_CHECK_HII_REVISION

(3)Refine the Debug message and function comments,like update oneof",
"checkbox", "numeric" to "OneOf", "CheckBox", "Numeric".

VarCheckHiiLib check the value set to storage based on the possible value
listed in the vfr file. Since we have enhanced vfr to support Question
value stored in bit field, so now enhance VarCheckHiiLib to support bit
field check.

Cc: Star Zeng <star.zeng@intel.com>
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>
---
 .../VarCheckHiiLib/InternalVarCheckStructure.h     |   9 +-
 MdeModulePkg/Library/VarCheckHiiLib/VarCheckHii.h  |   4 +-
 .../Library/VarCheckHiiLib/VarCheckHiiGen.c        | 260 +++++++++++++++------
 .../Library/VarCheckHiiLib/VarCheckHiiLib.inf      |   5 +-
 .../VarCheckHiiLib/VarCheckHiiLibNullClass.c       | 184 ++++++++++-----
 5 files changed, 337 insertions(+), 125 deletions(-)

diff --git a/MdeModulePkg/Library/VarCheckHiiLib/InternalVarCheckStructure.h b/MdeModulePkg/Library/VarCheckHiiLib/InternalVarCheckStructure.h
index a9faed4..8878e4a 100644
--- a/MdeModulePkg/Library/VarCheckHiiLib/InternalVarCheckStructure.h
+++ b/MdeModulePkg/Library/VarCheckHiiLib/InternalVarCheckStructure.h
@@ -1,9 +1,9 @@
 /** @file
   Internal structure for Var Check Hii.
 
-Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2015 - 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
 http://opensource.org/licenses/bsd-license.php
 
@@ -21,11 +21,11 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #define HEADER_ALIGNMENT  4
 #define HEADER_ALIGN(Header)  (((UINTN) (Header) + HEADER_ALIGNMENT - 1) & (~(HEADER_ALIGNMENT - 1)))
 
 #pragma pack (1)
 
-#define VAR_CHECK_HII_REVISION  0x0001
+#define VAR_CHECK_HII_REVISION  0x0002
 
 typedef struct {
   UINT16            Revision;
   UINT16            HeaderLength;
   UINT32            Length; // Length include this header
@@ -40,41 +40,46 @@ typedef struct {
 typedef struct {
   UINT8             OpCode;
   UINT8             Length; // Length include this header
   UINT16            VarOffset;
   UINT8             StorageWidth;
+  BOOLEAN           BitFieldStore; // Whether the Question is stored in bit field, if TRUE, the VarOffset/StorageWidth will be saved as bit level, otherwise in byte level.
 } VAR_CHECK_HII_QUESTION_HEADER;
 
 typedef struct {
   UINT8             OpCode;
   UINT8             Length; // Length include this header
   UINT16            VarOffset;
   UINT8             StorageWidth;
+  BOOLEAN           BitFieldStore; // Whether the Question is stored in bit field, if TRUE, the VarOffset/StorageWidth will be saved as bit level, otherwise in byte level.
 //UINTx               Data[]; // x = UINT8/UINT16/UINT32/UINT64;
 } VAR_CHECK_HII_QUESTION_ONEOF;
 
 typedef struct {
   UINT8             OpCode;
   UINT8             Length; // Length include this header
   UINT16            VarOffset;
   UINT8             StorageWidth;
+  BOOLEAN           BitFieldStore; // Whether the Question is stored in bit field, if TRUE, the VarOffset/StorageWidth will be saved as bit level, otherwise in byte level.
 } VAR_CHECK_HII_QUESTION_CHECKBOX;
 
 typedef struct {
   UINT8             OpCode;
   UINT8             Length; // Length include this header
   UINT16            VarOffset;
   UINT8             StorageWidth;
+  BOOLEAN           BitFieldStore; // Whether the Question is stored in bit field, if TRUE, the VarOffset/StorageWidth will be saved as bit level, otherwise in byte level.
 //UINTx               Minimum; // x = UINT8/UINT16/UINT32/UINT64;
 //UINTx               Maximum; // x = UINT8/UINT16/UINT32/UINT64;
 } VAR_CHECK_HII_QUESTION_NUMERIC;
 
 typedef struct {
   UINT8             OpCode;
   UINT8             Length; // Length include this header
   UINT16            VarOffset;
   UINT8             StorageWidth;
+  BOOLEAN           BitFieldStore; // Whether the Question is stored in bit field, if TRUE, the VarOffset/StorageWidth will be saved as bit level, otherwise in byte level.
   UINT8             MaxContainers;
 //UINTx               Data[]; // x = UINT8/UINT16/UINT32/UINT64;
 } VAR_CHECK_HII_QUESTION_ORDEREDLIST;
 
 #pragma pack ()
diff --git a/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHii.h b/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHii.h
index a54b867..7363edf 100644
--- a/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHii.h
+++ b/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHii.h
@@ -1,9 +1,9 @@
 /** @file
   Include file for Var Check Hii handler and bin.
 
-Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2015 - 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
 http://opensource.org/licenses/bsd-license.php
 
@@ -20,10 +20,12 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Library/DebugLib.h>
 #include <Library/BaseMemoryLib.h>
 #include <Library/UefiBootServicesTableLib.h>
 #include <Library/MemoryAllocationLib.h>
 
+#include <Guid/MdeModuleHii.h>
+
 #include <Protocol/HiiDatabase.h>
 #include <Protocol/FirmwareVolume2.h>
 #include <Protocol/FirmwareVolumeBlock.h>
 
 #include "InternalVarCheckStructure.h"
diff --git a/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiGen.c b/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiGen.c
index a334a6f..7d1da0b 100644
--- a/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiGen.c
+++ b/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiGen.c
@@ -1,9 +1,9 @@
 /** @file
   Var Check Hii bin generation.
 
-Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2015 - 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
 http://opensource.org/licenses/bsd-license.php
 
@@ -118,12 +118,14 @@ DumpHiiPackage (
 {
   EFI_HII_PACKAGE_HEADER        *HiiPackageHeader;
   EFI_IFR_OP_HEADER             *IfrOpCodeHeader;
   EFI_IFR_VARSTORE              *IfrVarStore;
   EFI_IFR_VARSTORE_EFI          *IfrEfiVarStore;
+  BOOLEAN                       QuestionStoredInBitField;
 
   HiiPackageHeader = (EFI_HII_PACKAGE_HEADER *) HiiPackage;
+  QuestionStoredInBitField = FALSE;
 
   DEBUG ((DEBUG_INFO, "  HiiPackageHeader->Type   - 0x%02x (%a)\n", HiiPackageHeader->Type, HiiPackageTypeToStr ((UINT8) HiiPackageHeader->Type)));
   DEBUG ((DEBUG_INFO, "  HiiPackageHeader->Length - 0x%06x\n", HiiPackageHeader->Length));
 
   switch (HiiPackageHeader->Type) {
@@ -155,83 +157,116 @@ DumpHiiPackage (
               DEBUG ((DEBUG_INFO, "      Attributes - 0x%08x\n", IfrEfiVarStore->Attributes));
               DEBUG ((DEBUG_INFO, "      Name       - %a\n", IfrEfiVarStore->Name));
             }
             break;
 
+          case EFI_IFR_GUID_OP:
+            if (CompareGuid ((EFI_GUID *)((UINTN)IfrOpCodeHeader + sizeof (EFI_IFR_OP_HEADER)), &gEdkiiIfrBitVarstoreGuid)) {
+              QuestionStoredInBitField = TRUE;
+            }
+            break;
+
           case EFI_IFR_ONE_OF_OP:
           case EFI_IFR_CHECKBOX_OP:
           case EFI_IFR_NUMERIC_OP:
           case EFI_IFR_ORDERED_LIST_OP:
+            if (QuestionStoredInBitField) {
+              DEBUG ((DEBUG_INFO, "----DumpHiiPackage-The Question is stored in bit field----\n"));
+            } else {
+              DEBUG ((DEBUG_INFO, "----DumpHiiPackage-The Question is stored in byte field----\n"));
+            }
             DEBUG ((DEBUG_INFO, "    IfrOpCodeHeader->OpCode - 0x%02x (%a)\n", IfrOpCodeHeader->OpCode, IfrOpCodeToStr (IfrOpCodeHeader->OpCode)));
             DEBUG ((DEBUG_INFO, "    IfrOpCodeHeader->Length - 0x02%x\n", IfrOpCodeHeader->Length));
             DEBUG ((DEBUG_INFO, "    IfrOpCodeHeader->Scope  - 0x02%x\n", IfrOpCodeHeader->Scope));
             DEBUG ((DEBUG_INFO, "      Prompt       - 0x%04x\n", ((EFI_IFR_ONE_OF *) IfrOpCodeHeader)->Question.Header.Prompt));
             DEBUG ((DEBUG_INFO, "      Help         - 0x%04x\n", ((EFI_IFR_ONE_OF *) IfrOpCodeHeader)->Question.Header.Help));
             DEBUG ((DEBUG_INFO, "      QuestionId   - 0x%04x\n", ((EFI_IFR_ONE_OF *) IfrOpCodeHeader)->Question.QuestionId));
             DEBUG ((DEBUG_INFO, "      VarStoreId   - 0x%04x\n", ((EFI_IFR_ONE_OF *) IfrOpCodeHeader)->Question.VarStoreId));
-            DEBUG ((DEBUG_INFO, "      VarStoreInfo - 0x%04x\n", ((EFI_IFR_ONE_OF * )IfrOpCodeHeader)->Question.VarStoreInfo.VarOffset));
+            if (QuestionStoredInBitField) {
+              DEBUG ((DEBUG_INFO, "    VarStoreInfo (bit level) - 0x%04x\n", ((EFI_IFR_ONE_OF * )IfrOpCodeHeader)->Question.VarStoreInfo.VarOffset));
+            } else {
+              DEBUG ((DEBUG_INFO, "    VarStoreInfo - 0x%04x\n", ((EFI_IFR_ONE_OF * )IfrOpCodeHeader)->Question.VarStoreInfo.VarOffset));
+            }
             {
               EFI_IFR_ONE_OF            *IfrOneOf;
               EFI_IFR_CHECKBOX          *IfrCheckBox;
               EFI_IFR_NUMERIC           *IfrNumeric;
               EFI_IFR_ORDERED_LIST      *IfrOrderedList;
 
               switch (IfrOpCodeHeader->OpCode) {
                 case EFI_IFR_ONE_OF_OP:
                   IfrOneOf = (EFI_IFR_ONE_OF *) IfrOpCodeHeader;
                   DEBUG ((DEBUG_INFO, "      Flags         - 0x%02x\n", IfrOneOf->Flags));
-                  switch (IfrOneOf->Flags & EFI_IFR_NUMERIC_SIZE) {
-                  case EFI_IFR_NUMERIC_SIZE_1:
-                    DEBUG ((DEBUG_INFO, "      MinValue      - 0x%02x\n", IfrOneOf->data.u8.MinValue));
-                    DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%02x\n", IfrOneOf->data.u8.MaxValue));
-                    DEBUG ((DEBUG_INFO, "      Step          - 0x%02x\n", IfrOneOf->data.u8.Step));
-                    break;
-                  case EFI_IFR_NUMERIC_SIZE_2:
-                    DEBUG ((DEBUG_INFO, "      MinValue      - 0x%04x\n", IfrOneOf->data.u16.MinValue));
-                    DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%04x\n", IfrOneOf->data.u16.MaxValue));
-                    DEBUG ((DEBUG_INFO, "      Step          - 0x%04x\n", IfrOneOf->data.u16.Step));
-                    break;
-                  case EFI_IFR_NUMERIC_SIZE_4:
+                  if (QuestionStoredInBitField) {
+                    //
+                    // For OneOf stored in bit field, the option value are saved as UINT32 type.
+                    //
                     DEBUG ((DEBUG_INFO, "      MinValue      - 0x%08x\n", IfrOneOf->data.u32.MinValue));
                     DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%08x\n", IfrOneOf->data.u32.MaxValue));
                     DEBUG ((DEBUG_INFO, "      Step          - 0x%08x\n", IfrOneOf->data.u32.Step));
-                    break;
-                  case EFI_IFR_NUMERIC_SIZE_8:
-                    DEBUG ((DEBUG_INFO, "      MinValue      - 0x%016lx\n", IfrOneOf->data.u64.MinValue));
-                    DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%016lx\n", IfrOneOf->data.u64.MaxValue));
-                    DEBUG ((DEBUG_INFO, "      Step          - 0x%016lx\n", IfrOneOf->data.u64.Step));
-                    break;
+                  } else {
+                    switch (IfrOneOf->Flags & EFI_IFR_NUMERIC_SIZE) {
+                    case EFI_IFR_NUMERIC_SIZE_1:
+                      DEBUG ((DEBUG_INFO, "      MinValue      - 0x%02x\n", IfrOneOf->data.u8.MinValue));
+                      DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%02x\n", IfrOneOf->data.u8.MaxValue));
+                      DEBUG ((DEBUG_INFO, "      Step          - 0x%02x\n", IfrOneOf->data.u8.Step));
+                      break;
+                    case EFI_IFR_NUMERIC_SIZE_2:
+                      DEBUG ((DEBUG_INFO, "      MinValue      - 0x%04x\n", IfrOneOf->data.u16.MinValue));
+                      DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%04x\n", IfrOneOf->data.u16.MaxValue));
+                      DEBUG ((DEBUG_INFO, "      Step          - 0x%04x\n", IfrOneOf->data.u16.Step));
+                      break;
+                    case EFI_IFR_NUMERIC_SIZE_4:
+                      DEBUG ((DEBUG_INFO, "      MinValue      - 0x%08x\n", IfrOneOf->data.u32.MinValue));
+                      DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%08x\n", IfrOneOf->data.u32.MaxValue));
+                      DEBUG ((DEBUG_INFO, "      Step          - 0x%08x\n", IfrOneOf->data.u32.Step));
+                      break;
+                    case EFI_IFR_NUMERIC_SIZE_8:
+                      DEBUG ((DEBUG_INFO, "      MinValue      - 0x%016lx\n", IfrOneOf->data.u64.MinValue));
+                      DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%016lx\n", IfrOneOf->data.u64.MaxValue));
+                      DEBUG ((DEBUG_INFO, "      Step          - 0x%016lx\n", IfrOneOf->data.u64.Step));
+                      break;
+                    }
                   }
                   break;
                 case EFI_IFR_CHECKBOX_OP:
                   IfrCheckBox = (EFI_IFR_CHECKBOX *) IfrOpCodeHeader;
                   DEBUG ((DEBUG_INFO, "      Flags         - 0x%02x\n", IfrCheckBox->Flags));
                   break;
                 case EFI_IFR_NUMERIC_OP:
                   IfrNumeric = (EFI_IFR_NUMERIC *) IfrOpCodeHeader;
                   DEBUG ((DEBUG_INFO, "      Flags         - 0x%02x\n", IfrNumeric->Flags));
-                  switch (IfrNumeric->Flags & EFI_IFR_NUMERIC_SIZE) {
-                  case EFI_IFR_NUMERIC_SIZE_1:
-                    DEBUG ((DEBUG_INFO, "      MinValue      - 0x%02x\n", IfrNumeric->data.u8.MinValue));
-                    DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%02x\n", IfrNumeric->data.u8.MaxValue));
-                    DEBUG ((DEBUG_INFO, "      Step          - 0x%02x\n", IfrNumeric->data.u8.Step));
-                    break;
-                  case EFI_IFR_NUMERIC_SIZE_2:
-                    DEBUG ((DEBUG_INFO, "      MinValue      - 0x%04x\n", IfrNumeric->data.u16.MinValue));
-                    DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%04x\n", IfrNumeric->data.u16.MaxValue));
-                    DEBUG ((DEBUG_INFO, "      Step          - 0x%04x\n", IfrNumeric->data.u16.Step));
-                    break;
-                  case EFI_IFR_NUMERIC_SIZE_4:
+                  if (QuestionStoredInBitField) {
+                    //
+                    // For Numeric stored in bit field, the MinValue,MaxValue and Step are saved as UINT32 type.
+                    //
                     DEBUG ((DEBUG_INFO, "      MinValue      - 0x%08x\n", IfrNumeric->data.u32.MinValue));
                     DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%08x\n", IfrNumeric->data.u32.MaxValue));
                     DEBUG ((DEBUG_INFO, "      Step          - 0x%08x\n", IfrNumeric->data.u32.Step));
-                    break;
-                  case EFI_IFR_NUMERIC_SIZE_8:
-                    DEBUG ((DEBUG_INFO, "      MinValue      - 0x%016lx\n", IfrNumeric->data.u64.MinValue));
-                    DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%016lx\n", IfrNumeric->data.u64.MaxValue));
-                    DEBUG ((DEBUG_INFO, "      Step          - 0x%016lx\n", IfrNumeric->data.u64.Step));
-                    break;
+                  } else {
+                    switch (IfrNumeric->Flags & EFI_IFR_NUMERIC_SIZE) {
+                    case EFI_IFR_NUMERIC_SIZE_1:
+                      DEBUG ((DEBUG_INFO, "      MinValue      - 0x%02x\n", IfrNumeric->data.u8.MinValue));
+                      DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%02x\n", IfrNumeric->data.u8.MaxValue));
+                      DEBUG ((DEBUG_INFO, "      Step          - 0x%02x\n", IfrNumeric->data.u8.Step));
+                      break;
+                    case EFI_IFR_NUMERIC_SIZE_2:
+                      DEBUG ((DEBUG_INFO, "      MinValue      - 0x%04x\n", IfrNumeric->data.u16.MinValue));
+                      DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%04x\n", IfrNumeric->data.u16.MaxValue));
+                      DEBUG ((DEBUG_INFO, "      Step          - 0x%04x\n", IfrNumeric->data.u16.Step));
+                      break;
+                    case EFI_IFR_NUMERIC_SIZE_4:
+                      DEBUG ((DEBUG_INFO, "      MinValue      - 0x%08x\n", IfrNumeric->data.u32.MinValue));
+                      DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%08x\n", IfrNumeric->data.u32.MaxValue));
+                      DEBUG ((DEBUG_INFO, "      Step          - 0x%08x\n", IfrNumeric->data.u32.Step));
+                      break;
+                    case EFI_IFR_NUMERIC_SIZE_8:
+                      DEBUG ((DEBUG_INFO, "      MinValue      - 0x%016lx\n", IfrNumeric->data.u64.MinValue));
+                      DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%016lx\n", IfrNumeric->data.u64.MaxValue));
+                      DEBUG ((DEBUG_INFO, "      Step          - 0x%016lx\n", IfrNumeric->data.u64.Step));
+                      break;
+                    }
                   }
                   break;
                 case EFI_IFR_ORDERED_LIST_OP:
                   IfrOrderedList = (EFI_IFR_ORDERED_LIST *) IfrOpCodeHeader;
                   DEBUG ((DEBUG_INFO, "      MaxContainers - 0x%02x\n", IfrOrderedList->MaxContainers));
@@ -486,28 +521,39 @@ MergeHiiQuestion (
   UINT64                            Maximum2;
   UINT64                            OneValue2;
   UINT8                             *Ptr;
   UINT8                             *Ptr1;
   UINT8                             *Ptr2;
+  UINT16                            ArrayIndex;
 
   //
   // Hii Question from Hii Database has high priority.
   // Do not to merge Hii Question from Fv to Hii Question from Hii Database.
   //
   if (FromFv) {
     InternalVarCheckFreePool (HiiQuestion);
     return;
   }
 
-  HiiQuestion1 = HiiVariableNode->HiiQuestionArray[HiiQuestion->VarOffset];
+  if (HiiQuestion->BitFieldStore) {
+    ArrayIndex = HiiQuestion->VarOffset;
+  } else {
+    ArrayIndex = HiiQuestion->VarOffset * 8;
+  }
+
+  HiiQuestion1 = HiiVariableNode->HiiQuestionArray[ArrayIndex];
   HiiQuestion2 = HiiQuestion;
 
   ASSERT ((HiiQuestion1->OpCode == HiiQuestion2->OpCode) && (HiiQuestion1->StorageWidth == HiiQuestion2->StorageWidth));
 
   switch (HiiQuestion1->OpCode) {
     case EFI_IFR_ONE_OF_OP:
-      DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_ONE_OF_OP VarOffset = 0x%04x\n", HiiQuestion1->VarOffset));
+      if (HiiQuestion1->BitFieldStore) {
+        DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_ONE_OF_OP VarOffset (bit level) = 0x%04x\n", HiiQuestion1->VarOffset));
+      } else {
+        DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_ONE_OF_OP VarOffset = 0x%04x\n", HiiQuestion1->VarOffset));
+      }
       //
       // Get the length of Hii Question 1.
       //
       NewLength = HiiQuestion1->Length;
 
@@ -578,21 +624,29 @@ MergeHiiQuestion (
             Ptr += HiiQuestion1->StorageWidth;
           }
           Ptr2 += HiiQuestion2->StorageWidth;
         }
 
-        HiiVariableNode->HiiQuestionArray[HiiQuestion1->VarOffset] = NewHiiQuestion;
+        HiiVariableNode->HiiQuestionArray[ArrayIndex] = NewHiiQuestion;
         InternalVarCheckFreePool (HiiQuestion1);
       }
       break;
 
     case EFI_IFR_CHECKBOX_OP:
-      DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_CHECKBOX_OP VarOffset = 0x%04x\n", HiiQuestion1->VarOffset));
+      if (HiiQuestion1->BitFieldStore) {
+        DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_CHECKBOX_OP VarOffset (bit level) = 0x%04x\n", HiiQuestion1->VarOffset));
+      } else {
+        DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_CHECKBOX_OP VarOffset = 0x%04x\n", HiiQuestion1->VarOffset));
+      }
       break;
 
     case EFI_IFR_NUMERIC_OP:
-      DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_NUMERIC_OP VarOffset = 0x%04x\n", HiiQuestion1->VarOffset));
+      if (HiiQuestion1->BitFieldStore) {
+        DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_NUMERIC_OP VarOffset (bit level) = 0x%04x\n", HiiQuestion1->VarOffset));
+      } else {
+        DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_NUMERIC_OP VarOffset = 0x%04x\n", HiiQuestion1->VarOffset));
+      }
       //
       // Get minimum and maximum of Hii Question 1.
       //
       Minimum1 = 0;
       Maximum1 = 0;
@@ -703,11 +757,11 @@ MergeHiiQuestion (
             Ptr += HiiQuestion1->StorageWidth;
           }
           Ptr2 += HiiQuestion2->StorageWidth;
         }
 
-        HiiVariableNode->HiiQuestionArray[HiiQuestion1->VarOffset] = NewHiiQuestion;
+        HiiVariableNode->HiiQuestionArray[ArrayIndex] = NewHiiQuestion;
         InternalVarCheckFreePool (HiiQuestion1);
       }
       break;
 
     default:
@@ -829,29 +883,42 @@ GetOneOfOption (
 
 /**
   Parse Hii Question Oneof.
 
   @param[in] IfrOpCodeHeader    Pointer to Ifr OpCode header.
+  @param[in] StoredInBitField   Whether the OneOf is stored in bit field Storage.
 
   return Pointer to Hii Question.
 
 **/
 VAR_CHECK_HII_QUESTION_HEADER *
 ParseHiiQuestionOneOf (
-  IN EFI_IFR_OP_HEADER  *IfrOpCodeHeader
+  IN EFI_IFR_OP_HEADER  *IfrOpCodeHeader,
+  IN BOOLEAN            StoredInBitField
   )
 {
   EFI_IFR_ONE_OF                *IfrOneOf;
   VAR_CHECK_HII_QUESTION_ONEOF  *OneOf;
   UINTN                         Length;
   UINT8                         Width;
   UINTN                         OptionCount;
   UINT8                         OptionWidth;
+  UINT8                         BitWidth;
 
   IfrOneOf = (EFI_IFR_ONE_OF *) IfrOpCodeHeader;
+  BitWidth = 0;
 
-  Width = (UINT8) (1 << (IfrOneOf->Flags & EFI_IFR_NUMERIC_SIZE));
+  if (StoredInBitField) {
+    //
+    // When OneOf stored in bit field, the bit width is saved in the lower six bits of the flag.
+    // And the options in the OneOf is saved as UINT32 type.
+    //
+    BitWidth = IfrOneOf->Flags & EDKII_IFR_NUMERIC_SIZE_BIT;
+    Width = sizeof (UINT32);
+  } else {
+    Width = (UINT8) (1 << (IfrOneOf->Flags & EFI_IFR_NUMERIC_SIZE));
+  }
 
   GetOneOfOption (IfrOpCodeHeader, &OptionCount, &OptionWidth, NULL);
   ASSERT (Width == OptionWidth);
 
   Length = sizeof (*OneOf) + OptionCount * Width;
@@ -859,28 +926,35 @@ ParseHiiQuestionOneOf (
   OneOf = InternalVarCheckAllocateZeroPool (Length);
   ASSERT (OneOf != NULL);
   OneOf->OpCode       = EFI_IFR_ONE_OF_OP;
   OneOf->Length       = (UINT8) Length;
   OneOf->VarOffset    = IfrOneOf->Question.VarStoreInfo.VarOffset;
-  OneOf->StorageWidth = Width;
+  if (StoredInBitField) {
+    OneOf->StorageWidth = BitWidth;
+  } else {
+    OneOf->StorageWidth = Width;
+  }
+  OneOf->BitFieldStore = StoredInBitField;
 
   GetOneOfOption (IfrOpCodeHeader, &OptionCount, &OptionWidth, OneOf + 1);
 
   return (VAR_CHECK_HII_QUESTION_HEADER *) OneOf;
 }
 
 /**
   Parse Hii Question CheckBox.
 
   @param[in] IfrOpCodeHeader    Pointer to Ifr OpCode header.
+  @param[in] StoredInBitField   Whether the CheckBox is stored in bit field Storage.
 
   return Pointer to Hii Question.
 
 **/
 VAR_CHECK_HII_QUESTION_HEADER *
 ParseHiiQuestionCheckBox (
-  IN EFI_IFR_OP_HEADER  *IfrOpCodeHeader
+  IN EFI_IFR_OP_HEADER  *IfrOpCodeHeader,
+  IN BOOLEAN            StoredInBitField
   )
 {
   EFI_IFR_CHECKBOX                  *IfrCheckBox;
   VAR_CHECK_HII_QUESTION_CHECKBOX   *CheckBox;
 
@@ -889,43 +963,66 @@ ParseHiiQuestionCheckBox (
   CheckBox = InternalVarCheckAllocateZeroPool (sizeof (*CheckBox));
   ASSERT (CheckBox != NULL);
   CheckBox->OpCode       = EFI_IFR_CHECKBOX_OP;
   CheckBox->Length       = (UINT8) sizeof (*CheckBox);;
   CheckBox->VarOffset    = IfrCheckBox->Question.VarStoreInfo.VarOffset;
-  CheckBox->StorageWidth = (UINT8) sizeof (BOOLEAN);
+  if (StoredInBitField) {
+    CheckBox->StorageWidth = 1;
+  } else {
+    CheckBox->StorageWidth = (UINT8) sizeof (BOOLEAN);
+  }
+  CheckBox->BitFieldStore = StoredInBitField;
 
   return (VAR_CHECK_HII_QUESTION_HEADER *) CheckBox;
 }
 
 /**
   Parse Hii Question Numeric.
 
   @param[in] IfrOpCodeHeader    Pointer to Ifr OpCode header.
+  @param[in] StoredInBitField   Whether the Numeric is stored in bit field Storage.
 
   return Pointer to Hii Question.
 
 **/
 VAR_CHECK_HII_QUESTION_HEADER *
 ParseHiiQuestionNumeric (
-  IN EFI_IFR_OP_HEADER  *IfrOpCodeHeader
+  IN EFI_IFR_OP_HEADER  *IfrOpCodeHeader,
+  IN BOOLEAN            StoredInBitField
   )
 {
   EFI_IFR_NUMERIC                   *IfrNumeric;
   VAR_CHECK_HII_QUESTION_NUMERIC    *Numeric;
   UINT8                             Width;
+  UINT8                             BitWidth;
 
   IfrNumeric = (EFI_IFR_NUMERIC *) IfrOpCodeHeader;
+  BitWidth = 0;
 
   Numeric = InternalVarCheckAllocateZeroPool (sizeof (VAR_CHECK_HII_QUESTION_NUMERIC) + 2 * sizeof (UINT64));
   ASSERT (Numeric != NULL);
 
-  Width = (UINT8) (1 << (IfrNumeric->Flags & EFI_IFR_NUMERIC_SIZE));
+  if (StoredInBitField) {
+    //
+    // When Numeric stored in bit field, the bit field width is saved in the lower six bits of the flag.
+    // And the Minimum Maximum of Numeric is saved as UINT32 type.
+    //
+    BitWidth = IfrNumeric->Flags & EDKII_IFR_NUMERIC_SIZE_BIT;
+    Width = sizeof (UINT32);
+  } else {
+    Width = (UINT8) (1 << (IfrNumeric->Flags & EFI_IFR_NUMERIC_SIZE));
+  }
 
   Numeric->OpCode       = EFI_IFR_NUMERIC_OP;
   Numeric->Length       = (UINT8) (sizeof (VAR_CHECK_HII_QUESTION_NUMERIC) + 2 * Width);
-  Numeric->VarOffset    = IfrNumeric->Question.VarStoreInfo.VarOffset;
-  Numeric->StorageWidth = Width;
+  Numeric->VarOffset            = IfrNumeric->Question.VarStoreInfo.VarOffset;
+  if (StoredInBitField) {
+    Numeric->StorageWidth = BitWidth;
+  } else {
+    Numeric->StorageWidth         = Width;
+  }
+  Numeric->BitFieldStore = StoredInBitField;
 
   CopyMem (Numeric + 1, &IfrNumeric->data, Width * 2);
 
   return (VAR_CHECK_HII_QUESTION_HEADER *) Numeric;
 }
@@ -955,15 +1052,16 @@ ParseHiiQuestionOrderedList (
 
   Length = sizeof (*OrderedList) + OptionCount * OptionWidth;
 
   OrderedList = InternalVarCheckAllocateZeroPool (Length);
   ASSERT (OrderedList != NULL);
-  OrderedList->OpCode        = EFI_IFR_ORDERED_LIST_OP;
-  OrderedList->Length        = (UINT8) Length;
-  OrderedList->VarOffset     = IfrOrderedList->Question.VarStoreInfo.VarOffset;
-  OrderedList->StorageWidth  = OptionWidth;
-  OrderedList->MaxContainers = IfrOrderedList->MaxContainers;
+  OrderedList->BitFieldStore        = FALSE;
+  OrderedList->OpCode               = EFI_IFR_ORDERED_LIST_OP;
+  OrderedList->Length               = (UINT8) Length;
+  OrderedList->VarOffset            = IfrOrderedList->Question.VarStoreInfo.VarOffset;
+  OrderedList->StorageWidth         = OptionWidth;
+  OrderedList->MaxContainers        = IfrOrderedList->MaxContainers;
 
   GetOneOfOption (IfrOpCodeHeader, &OptionCount, &OptionWidth, OrderedList + 1);
 
   return (VAR_CHECK_HII_QUESTION_HEADER *) OrderedList;
 }
@@ -972,32 +1070,38 @@ ParseHiiQuestionOrderedList (
   Parse and create Hii Question node.
 
   @param[in] HiiVariableNode    Pointer to Hii Variable node.
   @param[in] IfrOpCodeHeader    Pointer to Ifr OpCode header.
   @param[in] FromFv             Hii Question from FV.
+  @param[in] StoredInBitField   Whether the Question is stored in bit field Storage.
 
 **/
 VOID
 ParseHiiQuestion (
   IN VAR_CHECK_HII_VARIABLE_NODE    *HiiVariableNode,
   IN  EFI_IFR_OP_HEADER             *IfrOpCodeHeader,
-  IN BOOLEAN                        FromFv
+  IN BOOLEAN                        FromFv,
+  IN BOOLEAN                        StoredInBitField
   )
 {
   VAR_CHECK_HII_QUESTION_HEADER *HiiQuestion;
+  UINT16                        ArrayIndex;
 
+  //
+  // Currently only OneOf, CheckBox and Numeric can be stored in bit field.
+  //
   switch (IfrOpCodeHeader->OpCode) {
     case EFI_IFR_ONE_OF_OP:
-      HiiQuestion = ParseHiiQuestionOneOf (IfrOpCodeHeader);
+      HiiQuestion = ParseHiiQuestionOneOf (IfrOpCodeHeader, StoredInBitField);
       break;
 
     case EFI_IFR_CHECKBOX_OP:
-      HiiQuestion = ParseHiiQuestionCheckBox (IfrOpCodeHeader);
+      HiiQuestion = ParseHiiQuestionCheckBox (IfrOpCodeHeader, StoredInBitField);
       break;
 
     case EFI_IFR_NUMERIC_OP:
-      HiiQuestion = ParseHiiQuestionNumeric (IfrOpCodeHeader);
+      HiiQuestion = ParseHiiQuestionNumeric (IfrOpCodeHeader, StoredInBitField);
       break;
 
     case EFI_IFR_ORDERED_LIST_OP:
       HiiQuestion = ParseHiiQuestionOrderedList (IfrOpCodeHeader);
       break;
@@ -1006,14 +1110,19 @@ ParseHiiQuestion (
       ASSERT (FALSE);
       return;
       break;
   }
 
-  if (HiiVariableNode->HiiQuestionArray[HiiQuestion->VarOffset] != NULL) {
+  if  (StoredInBitField) {
+    ArrayIndex = HiiQuestion->VarOffset;
+  } else {
+    ArrayIndex = HiiQuestion->VarOffset * 8;
+  }
+  if (HiiVariableNode->HiiQuestionArray[ArrayIndex] != NULL) {
     MergeHiiQuestion (HiiVariableNode, HiiQuestion, FromFv);
   } else {
-    HiiVariableNode->HiiQuestionArray[HiiQuestion->VarOffset] = HiiQuestion;
+    HiiVariableNode->HiiQuestionArray[ArrayIndex] = HiiQuestion;
   }
 }
 
 /**
   Find Hii variable node by name and GUID.
@@ -1164,11 +1273,11 @@ CreateHiiVariableNode (
     HiiVariableNode->HiiVariable = HiiVariable;
     //
     // The variable store identifier, which is unique within the current form set.
     //
     HiiVariableNode->VarStoreId = IfrEfiVarStore->VarStoreId;
-    HiiVariableNode->HiiQuestionArray = InternalVarCheckAllocateZeroPool (IfrEfiVarStore->Size * sizeof (VAR_CHECK_HII_QUESTION_HEADER *));
+    HiiVariableNode->HiiQuestionArray = InternalVarCheckAllocateZeroPool (IfrEfiVarStore->Size * 8 * sizeof (VAR_CHECK_HII_QUESTION_HEADER *));
 
     InsertTailList (&mVarCheckHiiList, &HiiVariableNode->Link);
   } else {
     HiiVariableNode->VarStoreId = IfrEfiVarStore->VarStoreId;
   }
@@ -1237,24 +1346,37 @@ VarCheckParseHiiPackage (
   )
 {
   EFI_HII_PACKAGE_HEADER        *HiiPackageHeader;
   EFI_IFR_OP_HEADER             *IfrOpCodeHeader;
   VAR_CHECK_HII_VARIABLE_NODE   *HiiVariableNode;
+  BOOLEAN                       QuestionStoredInBitField;
 
   //
   // Parse and create Hii Variable node list for this Hii Package.
   //
   ParseHiiVariable (HiiPackage);
 
   HiiPackageHeader = (EFI_HII_PACKAGE_HEADER *) HiiPackage;
 
+  QuestionStoredInBitField = FALSE;
+
   switch (HiiPackageHeader->Type) {
     case EFI_HII_PACKAGE_FORMS:
       IfrOpCodeHeader = (EFI_IFR_OP_HEADER *) (HiiPackageHeader + 1);
 
       while ((UINTN) IfrOpCodeHeader < (UINTN) HiiPackageHeader + HiiPackageHeader->Length) {
         switch (IfrOpCodeHeader->OpCode) {
+          case EFI_IFR_GUID_OP:
+            if (CompareGuid ((EFI_GUID *)((UINTN)IfrOpCodeHeader + sizeof (EFI_IFR_OP_HEADER)), &gEdkiiIfrBitVarstoreGuid)) {
+              QuestionStoredInBitField = TRUE;
+            }
+            break;
+
+          case EFI_IFR_END_OP:
+            QuestionStoredInBitField = FALSE;
+            break;
+
           case EFI_IFR_ONE_OF_OP:
           case EFI_IFR_CHECKBOX_OP:
           case EFI_IFR_NUMERIC_OP:
           case EFI_IFR_ORDERED_LIST_OP:
             HiiVariableNode = FindHiiVariableNodeByVarStoreId (((EFI_IFR_ONE_OF *) IfrOpCodeHeader)->Question.VarStoreId);
@@ -1268,11 +1390,11 @@ VarCheckParseHiiPackage (
                 //
             } else {
               //
               // Normal IFR
               //
-              ParseHiiQuestion (HiiVariableNode, IfrOpCodeHeader, FromFv);
+              ParseHiiQuestion (HiiVariableNode, IfrOpCodeHeader, FromFv, QuestionStoredInBitField);
             }
           default:
             break;
         }
         IfrOpCodeHeader = (EFI_IFR_OP_HEADER *) ((UINTN) IfrOpCodeHeader + IfrOpCodeHeader->Length);
@@ -1339,11 +1461,11 @@ DestroyHiiVariableNode (
     RemoveEntryList (&HiiVariableNode->Link);
 
     //
     // Free the allocated buffer.
     //
-    for (Index = 0; Index < HiiVariableNode->HiiVariable->Size; Index++) {
+    for (Index = 0; Index < HiiVariableNode->HiiVariable->Size * (UINTN) 8; Index++) {
       if (HiiVariableNode->HiiQuestionArray[Index] != NULL) {
         InternalVarCheckFreePool (HiiVariableNode->HiiQuestionArray[Index]);
       }
     }
     InternalVarCheckFreePool (HiiVariableNode->HiiQuestionArray);
@@ -1387,11 +1509,11 @@ BuildVarCheckHiiBin (
     BinSize = (UINT32) HEADER_ALIGN (BinSize);
 
     HiiVariableNode = VAR_CHECK_HII_VARIABLE_FROM_LINK (HiiVariableLink);
     HiiVariableLength = HiiVariableNode->HiiVariable->HeaderLength;
 
-    for (Index = 0; Index < HiiVariableNode->HiiVariable->Size; Index++) {
+    for (Index = 0; Index < HiiVariableNode->HiiVariable->Size * (UINTN) 8; Index++) {
       if (HiiVariableNode->HiiQuestionArray[Index] != NULL) {
         //
         // For Hii Question header align.
         //
         HiiVariableLength = (UINT32) HEADER_ALIGN (HiiVariableLength);
@@ -1432,11 +1554,11 @@ BuildVarCheckHiiBin (
 
     HiiVariableNode = VAR_CHECK_HII_VARIABLE_FROM_LINK (HiiVariableLink);
     CopyMem (Ptr, HiiVariableNode->HiiVariable, HiiVariableNode->HiiVariable->HeaderLength);
     Ptr += HiiVariableNode->HiiVariable->HeaderLength;
 
-    for (Index = 0; Index < HiiVariableNode->HiiVariable->Size; Index++) {
+    for (Index = 0; Index < HiiVariableNode->HiiVariable->Size * (UINTN) 8; Index++) {
       if (HiiVariableNode->HiiQuestionArray[Index] != NULL) {
         //
         // For Hii Question header align.
         //
         Ptr = (UINT8 *) HEADER_ALIGN (Ptr);
diff --git a/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLib.inf b/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLib.inf
index 98e6983..aeca3ef 100644
--- a/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLib.inf
+++ b/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLib.inf
@@ -1,9 +1,9 @@
 ## @file
 #  NULL class library to register var check HII handler.
 #
-#  Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2015 - 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
@@ -44,10 +44,13 @@
   UefiBootServicesTableLib
   MemoryAllocationLib
   PcdLib
   VarCheckLib
 
+[Guids]
+  gEdkiiIfrBitVarstoreGuid                  ## SOMETIMES_CONSUMES  ## GUID
+
 [Protocols]
   gEfiFirmwareVolume2ProtocolGuid           ## SOMETIMES_CONSUMES
   gEfiFirmwareVolumeBlock2ProtocolGuid      ## SOMETIMES_CONSUMES
   gEfiHiiDatabaseProtocolGuid               ## SOMETIMES_CONSUMES
 
diff --git a/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLibNullClass.c b/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLibNullClass.c
index 46a93bd..f0274d2 100644
--- a/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLibNullClass.c
+++ b/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLibNullClass.c
@@ -91,32 +91,65 @@ VarCheckHiiQuestion (
   UINT64   Maximum;
   UINT64   OneValue;
   UINT8    *Ptr;
   UINT8    Index;
   UINT8    MaxContainers;
+  UINT8    StartBit;
+  UINT8    EndBit;
+  UINT8    TotalBits;
+  UINT16   VarOffsetByteLevel;
+  UINT8    StorageWidthByteLevel;
+
+  if (HiiQuestion->BitFieldStore) {
+    VarOffsetByteLevel    = HiiQuestion->VarOffset / 8;
+    TotalBits             = HiiQuestion->VarOffset % 8 + HiiQuestion->StorageWidth;
+    StorageWidthByteLevel = (TotalBits % 8 == 0 ? TotalBits / 8: TotalBits / 8 + 1);
+  } else {
+    VarOffsetByteLevel =  HiiQuestion->VarOffset;
+    StorageWidthByteLevel = HiiQuestion->StorageWidth;
+  }
 
-  if (((UINT32) HiiQuestion->VarOffset + HiiQuestion->StorageWidth) > DataSize) {
-    DEBUG ((DEBUG_INFO , "VarCheckHiiQuestion fail: (VarOffset(0x%04x) + StorageWidth(0x%02x)) > Size(0x%x)\n", HiiQuestion->VarOffset, HiiQuestion->StorageWidth, DataSize));
+  if (((UINT32) VarOffsetByteLevel + StorageWidthByteLevel) > DataSize) {
+    DEBUG ((DEBUG_INFO , "VarCheckHiiQuestion fail: (VarOffset(0x%04x) + StorageWidth(0x%02x)) > Size(0x%x)\n", VarOffsetByteLevel, StorageWidthByteLevel, DataSize));
     return FALSE;
   }
 
   OneData = 0;
-  CopyMem (&OneData, (UINT8 *) Data + HiiQuestion->VarOffset, HiiQuestion->StorageWidth);
+  CopyMem (&OneData, (UINT8 *) Data + VarOffsetByteLevel, StorageWidthByteLevel);
+  if (HiiQuestion->BitFieldStore) {
+    //
+    // Get the value form the bit field.
+    //
+    StartBit = HiiQuestion->VarOffset % 8;
+    EndBit   = StartBit + HiiQuestion->StorageWidth - 1;
+    OneData  = BitFieldRead64 (OneData, StartBit, EndBit);
+  }
 
   switch (HiiQuestion->OpCode) {
     case EFI_IFR_ONE_OF_OP:
       Ptr = (UINT8 *) ((VAR_CHECK_HII_QUESTION_ONEOF *) HiiQuestion + 1);
       while ((UINTN) Ptr < (UINTN) HiiQuestion + HiiQuestion->Length) {
         OneValue = 0;
-        CopyMem (&OneValue, Ptr, HiiQuestion->StorageWidth);
+        if (HiiQuestion->BitFieldStore) {
+          //
+          // For OneOf stored in bit field, the value of options are saved as UINT32 type.
+          //
+          CopyMem (&OneValue, Ptr, sizeof (UINT32));
+        } else {
+          CopyMem (&OneValue, Ptr, HiiQuestion->StorageWidth);
+        }
         if (OneData == OneValue) {
           //
           // Match
           //
           break;
         }
-        Ptr += HiiQuestion->StorageWidth;
+        if (HiiQuestion->BitFieldStore) {
+          Ptr += sizeof (UINT32);
+        } else {
+          Ptr += HiiQuestion->StorageWidth;
+        }
       }
       if ((UINTN) Ptr >= ((UINTN) HiiQuestion + HiiQuestion->Length)) {
         //
         // No match
         //
@@ -136,14 +169,24 @@ VarCheckHiiQuestion (
 
     case EFI_IFR_NUMERIC_OP:
       Minimum = 0;
       Maximum = 0;
       Ptr = (UINT8 *) ((VAR_CHECK_HII_QUESTION_NUMERIC *) HiiQuestion + 1);
-      CopyMem (&Minimum, Ptr, HiiQuestion->StorageWidth);
-      Ptr += HiiQuestion->StorageWidth;
-      CopyMem (&Maximum, Ptr, HiiQuestion->StorageWidth);
-      Ptr += HiiQuestion->StorageWidth;
+      if (HiiQuestion->BitFieldStore) {
+        //
+        // For Numeric stored in bit field, the value of Maximum/Minimum are saved as UINT32 type.
+        //
+        CopyMem (&Minimum, Ptr, sizeof (UINT32));
+        Ptr += sizeof (UINT32);
+        CopyMem (&Maximum, Ptr, sizeof (UINT32));
+        Ptr += sizeof (UINT32);
+      } else {
+        CopyMem (&Minimum, Ptr, HiiQuestion->StorageWidth);
+        Ptr += HiiQuestion->StorageWidth;
+        CopyMem (&Maximum, Ptr, HiiQuestion->StorageWidth);
+        Ptr += HiiQuestion->StorageWidth;
+      }
 
       //
       // No need to check Step, because it is ONLY for UI.
       //
       if ((OneData < Minimum) || (OneData > Maximum)) {
@@ -341,75 +384,112 @@ DumpHiiQuestion (
   UINT64    Minimum;
   UINT64    Maximum;
   UINT64    OneValue;
   UINT8     *Ptr;
 
+  if (HiiQuestion->BitFieldStore) {
+    DEBUG ((DEBUG_INFO, "----DumpHiiQuestion-The Question is stored in bit field----\n"));
+  } else {
+    DEBUG ((DEBUG_INFO, "----DumpHiiQuestion-The Question is stored in byte field----\n"));
+  }
+
   DEBUG ((DEBUG_INFO, "  VAR_CHECK_HII_QUESTION_HEADER\n"));
   DEBUG ((DEBUG_INFO, "    OpCode        - 0x%02x (%a)\n", HiiQuestion->OpCode, HiiOpCodeToStr (HiiQuestion->OpCode)));
   DEBUG ((DEBUG_INFO, "    Length        - 0x%02x\n", HiiQuestion->Length));
-  DEBUG ((DEBUG_INFO, "    VarOffset     - 0x%04x\n", HiiQuestion->VarOffset));
-  DEBUG ((DEBUG_INFO, "    StorageWidth  - 0x%02x\n", HiiQuestion->StorageWidth));
+
+  if (HiiQuestion->BitFieldStore) {
+    DEBUG ((DEBUG_INFO, "  VarOffset(bit level)     - 0x%04x\n", HiiQuestion->VarOffset));
+    DEBUG ((DEBUG_INFO, "  StorageWidth(bit level)  - 0x%02x\n", HiiQuestion->StorageWidth));
+  } else {
+    DEBUG ((DEBUG_INFO, "    VarOffset     - 0x%04x\n", HiiQuestion->VarOffset));
+    DEBUG ((DEBUG_INFO, "    StorageWidth  - 0x%02x\n", HiiQuestion->StorageWidth));
+  }
 
   switch (HiiQuestion->OpCode) {
     case EFI_IFR_ONE_OF_OP:
       Ptr = (UINT8 *) ((VAR_CHECK_HII_QUESTION_ONEOF *) HiiQuestion + 1);
       while ((UINTN) Ptr < ((UINTN) HiiQuestion + HiiQuestion->Length)) {
         OneValue = 0;
-        CopyMem (&OneValue, Ptr, HiiQuestion->StorageWidth);
+        if (HiiQuestion->BitFieldStore) {
+          //
+          // For OneOf stored in bit field, the value of options are saved as UINT32 type.
+          //
+          CopyMem (&OneValue, Ptr, sizeof (UINT32));
+          DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%08x\n", OneValue));
+        } else {
+          CopyMem (&OneValue, Ptr, HiiQuestion->StorageWidth);
+          switch (HiiQuestion->StorageWidth) {
+            case sizeof (UINT8):
+              DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%02x\n", OneValue));
+              break;
+            case sizeof (UINT16):
+              DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%04x\n", OneValue));
+              break;
+            case sizeof (UINT32):
+              DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%08x\n", OneValue));
+              break;
+            case sizeof (UINT64):
+              DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%016lx\n", OneValue));
+              break;
+            default:
+              ASSERT (FALSE);
+              break;
+          }
+        }
+        if (HiiQuestion->BitFieldStore) {
+          Ptr += sizeof (UINT32);
+        } else {
+          Ptr += HiiQuestion->StorageWidth;
+        }
+      }
+      break;
+
+    case EFI_IFR_CHECKBOX_OP:
+      break;
+
+    case EFI_IFR_NUMERIC_OP:
+      Minimum = 0;
+      Maximum = 0;
+      Ptr = (UINT8 *) ((VAR_CHECK_HII_QUESTION_NUMERIC *) HiiQuestion + 1);
+      if(HiiQuestion->BitFieldStore) {
+        //
+        // For Numeric stored in bit field, the value of Maximum/Minimum are saved as UINT32 type.
+        //
+        CopyMem (&Minimum, Ptr, sizeof (UINT32));
+        Ptr += sizeof (UINT32);
+        CopyMem (&Maximum, Ptr, sizeof (UINT32));
+        Ptr += sizeof (UINT32);
+
+        DEBUG ((DEBUG_INFO, "    Minimum       - 0x%08x\n", Minimum));
+        DEBUG ((DEBUG_INFO, "    Maximum       - 0x%08x\n", Maximum));
+      } else {
+        CopyMem (&Minimum, Ptr, HiiQuestion->StorageWidth);
+        Ptr += HiiQuestion->StorageWidth;
+        CopyMem (&Maximum, Ptr, HiiQuestion->StorageWidth);
+        Ptr += HiiQuestion->StorageWidth;
+
         switch (HiiQuestion->StorageWidth) {
           case sizeof (UINT8):
-            DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%02x\n", OneValue));
+            DEBUG ((DEBUG_INFO, "    Minimum       - 0x%02x\n", Minimum));
+            DEBUG ((DEBUG_INFO, "    Maximum       - 0x%02x\n", Maximum));
             break;
           case sizeof (UINT16):
-            DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%04x\n", OneValue));
+            DEBUG ((DEBUG_INFO, "    Minimum       - 0x%04x\n", Minimum));
+            DEBUG ((DEBUG_INFO, "    Maximum       - 0x%04x\n", Maximum));
             break;
           case sizeof (UINT32):
-            DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%08x\n", OneValue));
+            DEBUG ((DEBUG_INFO, "    Minimum       - 0x%08x\n", Minimum));
+            DEBUG ((DEBUG_INFO, "    Maximum       - 0x%08x\n", Maximum));
             break;
           case sizeof (UINT64):
-            DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%016lx\n", OneValue));
+            DEBUG ((DEBUG_INFO, "    Minimum       - 0x%016lx\n", Minimum));
+            DEBUG ((DEBUG_INFO, "    Maximum       - 0x%016lx\n", Maximum));
             break;
           default:
             ASSERT (FALSE);
             break;
         }
-        Ptr += HiiQuestion->StorageWidth;
-      }
-      break;
-
-    case EFI_IFR_CHECKBOX_OP:
-      break;
-
-    case EFI_IFR_NUMERIC_OP:
-      Minimum = 0;
-      Maximum = 0;
-      Ptr = (UINT8 *) ((VAR_CHECK_HII_QUESTION_NUMERIC *) HiiQuestion + 1);
-      CopyMem (&Minimum, Ptr, HiiQuestion->StorageWidth);
-      Ptr += HiiQuestion->StorageWidth;
-      CopyMem (&Maximum, Ptr, HiiQuestion->StorageWidth);
-      Ptr += HiiQuestion->StorageWidth;
-
-      switch (HiiQuestion->StorageWidth) {
-        case sizeof (UINT8):
-          DEBUG ((DEBUG_INFO, "    Minimum       - 0x%02x\n", Minimum));
-          DEBUG ((DEBUG_INFO, "    Maximum       - 0x%02x\n", Maximum));
-          break;
-        case sizeof (UINT16):
-          DEBUG ((DEBUG_INFO, "    Minimum       - 0x%04x\n", Minimum));
-          DEBUG ((DEBUG_INFO, "    Maximum       - 0x%04x\n", Maximum));
-          break;
-        case sizeof (UINT32):
-          DEBUG ((DEBUG_INFO, "    Minimum       - 0x%08x\n", Minimum));
-          DEBUG ((DEBUG_INFO, "    Maximum       - 0x%08x\n", Maximum));
-          break;
-        case sizeof (UINT64):
-          DEBUG ((DEBUG_INFO, "    Minimum       - 0x%016lx\n", Minimum));
-          DEBUG ((DEBUG_INFO, "    Maximum       - 0x%016lx\n", Maximum));
-          break;
-        default:
-          ASSERT (FALSE);
-          break;
       }
       break;
 
     case EFI_IFR_ORDERED_LIST_OP:
       DEBUG ((DEBUG_INFO, "    MaxContainers - 0x%02x\n", ((VAR_CHECK_HII_QUESTION_ORDEREDLIST *) HiiQuestion)->MaxContainers));
-- 
1.9.5.msysgit.1

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Re: [edk2] [PATCH v2 2/2] MdeModulePkg/VarCheckHii: Enhance VarCheckHiiLib to support bit check
Posted by Zeng, Star 7 years, 1 month ago
The code logic is good. :) Below are my some minor comments.

1. Fix the typo 'form' to 'from' in "// Get the value form the bit field.".

2.  Remove one extra whitespace in "if  (StoredInBitField) {" to  "if (StoredInBitField) {".

3. Make the assignment in ParseHiiQuestionNumeric()and etc to be line aligned.

4. Should QuestionStoredInBitField be reset to FALSE at EFI_IFR_END_OP?

5. Could you double confirm and refine the line alignment of debug print?

Thanks,
Star
-----Original Message-----
From: Bi, Dandan 
Sent: Sunday, November 5, 2017 6:06 PM
To: edk2-devel@lists.01.org
Cc: Zeng, Star <star.zeng@intel.com>; Dong, Eric <eric.dong@intel.com>; Gao, Liming <liming.gao@intel.com>
Subject: [PATCH v2 2/2] MdeModulePkg/VarCheckHii: Enhance VarCheckHiiLib to support bit check

V2:
(1)Remove the VarOffsetBitLevel/StorageWidthBitLevel to reduce the final VarCheckBinSize and update the implementation accordingly.

(2)Update the VAR_CHECK_HII_REVISION

(3)Refine the Debug message and function comments,like update oneof", "checkbox", "numeric" to "OneOf", "CheckBox", "Numeric".

VarCheckHiiLib check the value set to storage based on the possible value listed in the vfr file. Since we have enhanced vfr to support Question value stored in bit field, so now enhance VarCheckHiiLib to support bit field check.

Cc: Star Zeng <star.zeng@intel.com>
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>
---
 .../VarCheckHiiLib/InternalVarCheckStructure.h     |   9 +-
 MdeModulePkg/Library/VarCheckHiiLib/VarCheckHii.h  |   4 +-
 .../Library/VarCheckHiiLib/VarCheckHiiGen.c        | 260 +++++++++++++++------
 .../Library/VarCheckHiiLib/VarCheckHiiLib.inf      |   5 +-
 .../VarCheckHiiLib/VarCheckHiiLibNullClass.c       | 184 ++++++++++-----
 5 files changed, 337 insertions(+), 125 deletions(-)

diff --git a/MdeModulePkg/Library/VarCheckHiiLib/InternalVarCheckStructure.h b/MdeModulePkg/Library/VarCheckHiiLib/InternalVarCheckStructure.h
index a9faed4..8878e4a 100644
--- a/MdeModulePkg/Library/VarCheckHiiLib/InternalVarCheckStructure.h
+++ b/MdeModulePkg/Library/VarCheckHiiLib/InternalVarCheckStructure.h
@@ -1,9 +1,9 @@
 /** @file
   Internal structure for Var Check Hii.
 
-Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2015 - 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  http://opensource.org/licenses/bsd-license.php
 
@@ -21,11 +21,11 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #define HEADER_ALIGNMENT  4
 #define HEADER_ALIGN(Header)  (((UINTN) (Header) + HEADER_ALIGNMENT - 1) & (~(HEADER_ALIGNMENT - 1)))
 
 #pragma pack (1)
 
-#define VAR_CHECK_HII_REVISION  0x0001
+#define VAR_CHECK_HII_REVISION  0x0002
 
 typedef struct {
   UINT16            Revision;
   UINT16            HeaderLength;
   UINT32            Length; // Length include this header
@@ -40,41 +40,46 @@ typedef struct {
 typedef struct {
   UINT8             OpCode;
   UINT8             Length; // Length include this header
   UINT16            VarOffset;
   UINT8             StorageWidth;
+  BOOLEAN           BitFieldStore; // Whether the Question is stored in bit field, if TRUE, the VarOffset/StorageWidth will be saved as bit level, otherwise in byte level.
 } VAR_CHECK_HII_QUESTION_HEADER;
 
 typedef struct {
   UINT8             OpCode;
   UINT8             Length; // Length include this header
   UINT16            VarOffset;
   UINT8             StorageWidth;
+  BOOLEAN           BitFieldStore; // Whether the Question is stored in bit field, if TRUE, the VarOffset/StorageWidth will be saved as bit level, otherwise in byte level.
 //UINTx               Data[]; // x = UINT8/UINT16/UINT32/UINT64;
 } VAR_CHECK_HII_QUESTION_ONEOF;
 
 typedef struct {
   UINT8             OpCode;
   UINT8             Length; // Length include this header
   UINT16            VarOffset;
   UINT8             StorageWidth;
+  BOOLEAN           BitFieldStore; // Whether the Question is stored in bit field, if TRUE, the VarOffset/StorageWidth will be saved as bit level, otherwise in byte level.
 } VAR_CHECK_HII_QUESTION_CHECKBOX;
 
 typedef struct {
   UINT8             OpCode;
   UINT8             Length; // Length include this header
   UINT16            VarOffset;
   UINT8             StorageWidth;
+  BOOLEAN           BitFieldStore; // Whether the Question is stored in bit field, if TRUE, the VarOffset/StorageWidth will be saved as bit level, otherwise in byte level.
 //UINTx               Minimum; // x = UINT8/UINT16/UINT32/UINT64;
 //UINTx               Maximum; // x = UINT8/UINT16/UINT32/UINT64;
 } VAR_CHECK_HII_QUESTION_NUMERIC;
 
 typedef struct {
   UINT8             OpCode;
   UINT8             Length; // Length include this header
   UINT16            VarOffset;
   UINT8             StorageWidth;
+  BOOLEAN           BitFieldStore; // Whether the Question is stored in bit field, if TRUE, the VarOffset/StorageWidth will be saved as bit level, otherwise in byte level.
   UINT8             MaxContainers;
 //UINTx               Data[]; // x = UINT8/UINT16/UINT32/UINT64;
 } VAR_CHECK_HII_QUESTION_ORDEREDLIST;
 
 #pragma pack ()
diff --git a/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHii.h b/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHii.h
index a54b867..7363edf 100644
--- a/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHii.h
+++ b/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHii.h
@@ -1,9 +1,9 @@
 /** @file
   Include file for Var Check Hii handler and bin.
 
-Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2015 - 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  http://opensource.org/licenses/bsd-license.php
 
@@ -20,10 +20,12 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Library/DebugLib.h>
 #include <Library/BaseMemoryLib.h>
 #include <Library/UefiBootServicesTableLib.h>
 #include <Library/MemoryAllocationLib.h>
 
+#include <Guid/MdeModuleHii.h>
+
 #include <Protocol/HiiDatabase.h>
 #include <Protocol/FirmwareVolume2.h>
 #include <Protocol/FirmwareVolumeBlock.h>
 
 #include "InternalVarCheckStructure.h"
diff --git a/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiGen.c b/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiGen.c
index a334a6f..7d1da0b 100644
--- a/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiGen.c
+++ b/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiGen.c
@@ -1,9 +1,9 @@
 /** @file
   Var Check Hii bin generation.
 
-Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2015 - 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  http://opensource.org/licenses/bsd-license.php
 
@@ -118,12 +118,14 @@ DumpHiiPackage (
 {
   EFI_HII_PACKAGE_HEADER        *HiiPackageHeader;
   EFI_IFR_OP_HEADER             *IfrOpCodeHeader;
   EFI_IFR_VARSTORE              *IfrVarStore;
   EFI_IFR_VARSTORE_EFI          *IfrEfiVarStore;
+  BOOLEAN                       QuestionStoredInBitField;
 
   HiiPackageHeader = (EFI_HII_PACKAGE_HEADER *) HiiPackage;
+  QuestionStoredInBitField = FALSE;
 
   DEBUG ((DEBUG_INFO, "  HiiPackageHeader->Type   - 0x%02x (%a)\n", HiiPackageHeader->Type, HiiPackageTypeToStr ((UINT8) HiiPackageHeader->Type)));
   DEBUG ((DEBUG_INFO, "  HiiPackageHeader->Length - 0x%06x\n", HiiPackageHeader->Length));
 
   switch (HiiPackageHeader->Type) {
@@ -155,83 +157,116 @@ DumpHiiPackage (
               DEBUG ((DEBUG_INFO, "      Attributes - 0x%08x\n", IfrEfiVarStore->Attributes));
               DEBUG ((DEBUG_INFO, "      Name       - %a\n", IfrEfiVarStore->Name));
             }
             break;
 
+          case EFI_IFR_GUID_OP:
+            if (CompareGuid ((EFI_GUID *)((UINTN)IfrOpCodeHeader + sizeof (EFI_IFR_OP_HEADER)), &gEdkiiIfrBitVarstoreGuid)) {
+              QuestionStoredInBitField = TRUE;
+            }
+            break;
+
           case EFI_IFR_ONE_OF_OP:
           case EFI_IFR_CHECKBOX_OP:
           case EFI_IFR_NUMERIC_OP:
           case EFI_IFR_ORDERED_LIST_OP:
+            if (QuestionStoredInBitField) {
+              DEBUG ((DEBUG_INFO, "----DumpHiiPackage-The Question is stored in bit field----\n"));
+            } else {
+              DEBUG ((DEBUG_INFO, "----DumpHiiPackage-The Question is stored in byte field----\n"));
+            }
             DEBUG ((DEBUG_INFO, "    IfrOpCodeHeader->OpCode - 0x%02x (%a)\n", IfrOpCodeHeader->OpCode, IfrOpCodeToStr (IfrOpCodeHeader->OpCode)));
             DEBUG ((DEBUG_INFO, "    IfrOpCodeHeader->Length - 0x02%x\n", IfrOpCodeHeader->Length));
             DEBUG ((DEBUG_INFO, "    IfrOpCodeHeader->Scope  - 0x02%x\n", IfrOpCodeHeader->Scope));
             DEBUG ((DEBUG_INFO, "      Prompt       - 0x%04x\n", ((EFI_IFR_ONE_OF *) IfrOpCodeHeader)->Question.Header.Prompt));
             DEBUG ((DEBUG_INFO, "      Help         - 0x%04x\n", ((EFI_IFR_ONE_OF *) IfrOpCodeHeader)->Question.Header.Help));
             DEBUG ((DEBUG_INFO, "      QuestionId   - 0x%04x\n", ((EFI_IFR_ONE_OF *) IfrOpCodeHeader)->Question.QuestionId));
             DEBUG ((DEBUG_INFO, "      VarStoreId   - 0x%04x\n", ((EFI_IFR_ONE_OF *) IfrOpCodeHeader)->Question.VarStoreId));
-            DEBUG ((DEBUG_INFO, "      VarStoreInfo - 0x%04x\n", ((EFI_IFR_ONE_OF * )IfrOpCodeHeader)->Question.VarStoreInfo.VarOffset));
+            if (QuestionStoredInBitField) {
+              DEBUG ((DEBUG_INFO, "    VarStoreInfo (bit level) - 0x%04x\n", ((EFI_IFR_ONE_OF * )IfrOpCodeHeader)->Question.VarStoreInfo.VarOffset));
+            } else {
+              DEBUG ((DEBUG_INFO, "    VarStoreInfo - 0x%04x\n", ((EFI_IFR_ONE_OF * )IfrOpCodeHeader)->Question.VarStoreInfo.VarOffset));
+            }
             {
               EFI_IFR_ONE_OF            *IfrOneOf;
               EFI_IFR_CHECKBOX          *IfrCheckBox;
               EFI_IFR_NUMERIC           *IfrNumeric;
               EFI_IFR_ORDERED_LIST      *IfrOrderedList;
 
               switch (IfrOpCodeHeader->OpCode) {
                 case EFI_IFR_ONE_OF_OP:
                   IfrOneOf = (EFI_IFR_ONE_OF *) IfrOpCodeHeader;
                   DEBUG ((DEBUG_INFO, "      Flags         - 0x%02x\n", IfrOneOf->Flags));
-                  switch (IfrOneOf->Flags & EFI_IFR_NUMERIC_SIZE) {
-                  case EFI_IFR_NUMERIC_SIZE_1:
-                    DEBUG ((DEBUG_INFO, "      MinValue      - 0x%02x\n", IfrOneOf->data.u8.MinValue));
-                    DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%02x\n", IfrOneOf->data.u8.MaxValue));
-                    DEBUG ((DEBUG_INFO, "      Step          - 0x%02x\n", IfrOneOf->data.u8.Step));
-                    break;
-                  case EFI_IFR_NUMERIC_SIZE_2:
-                    DEBUG ((DEBUG_INFO, "      MinValue      - 0x%04x\n", IfrOneOf->data.u16.MinValue));
-                    DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%04x\n", IfrOneOf->data.u16.MaxValue));
-                    DEBUG ((DEBUG_INFO, "      Step          - 0x%04x\n", IfrOneOf->data.u16.Step));
-                    break;
-                  case EFI_IFR_NUMERIC_SIZE_4:
+                  if (QuestionStoredInBitField) {
+                    //
+                    // For OneOf stored in bit field, the option value are saved as UINT32 type.
+                    //
                     DEBUG ((DEBUG_INFO, "      MinValue      - 0x%08x\n", IfrOneOf->data.u32.MinValue));
                     DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%08x\n", IfrOneOf->data.u32.MaxValue));
                     DEBUG ((DEBUG_INFO, "      Step          - 0x%08x\n", IfrOneOf->data.u32.Step));
-                    break;
-                  case EFI_IFR_NUMERIC_SIZE_8:
-                    DEBUG ((DEBUG_INFO, "      MinValue      - 0x%016lx\n", IfrOneOf->data.u64.MinValue));
-                    DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%016lx\n", IfrOneOf->data.u64.MaxValue));
-                    DEBUG ((DEBUG_INFO, "      Step          - 0x%016lx\n", IfrOneOf->data.u64.Step));
-                    break;
+                  } else {
+                    switch (IfrOneOf->Flags & EFI_IFR_NUMERIC_SIZE) {
+                    case EFI_IFR_NUMERIC_SIZE_1:
+                      DEBUG ((DEBUG_INFO, "      MinValue      - 0x%02x\n", IfrOneOf->data.u8.MinValue));
+                      DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%02x\n", IfrOneOf->data.u8.MaxValue));
+                      DEBUG ((DEBUG_INFO, "      Step          - 0x%02x\n", IfrOneOf->data.u8.Step));
+                      break;
+                    case EFI_IFR_NUMERIC_SIZE_2:
+                      DEBUG ((DEBUG_INFO, "      MinValue      - 0x%04x\n", IfrOneOf->data.u16.MinValue));
+                      DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%04x\n", IfrOneOf->data.u16.MaxValue));
+                      DEBUG ((DEBUG_INFO, "      Step          - 0x%04x\n", IfrOneOf->data.u16.Step));
+                      break;
+                    case EFI_IFR_NUMERIC_SIZE_4:
+                      DEBUG ((DEBUG_INFO, "      MinValue      - 0x%08x\n", IfrOneOf->data.u32.MinValue));
+                      DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%08x\n", IfrOneOf->data.u32.MaxValue));
+                      DEBUG ((DEBUG_INFO, "      Step          - 0x%08x\n", IfrOneOf->data.u32.Step));
+                      break;
+                    case EFI_IFR_NUMERIC_SIZE_8:
+                      DEBUG ((DEBUG_INFO, "      MinValue      - 0x%016lx\n", IfrOneOf->data.u64.MinValue));
+                      DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%016lx\n", IfrOneOf->data.u64.MaxValue));
+                      DEBUG ((DEBUG_INFO, "      Step          - 0x%016lx\n", IfrOneOf->data.u64.Step));
+                      break;
+                    }
                   }
                   break;
                 case EFI_IFR_CHECKBOX_OP:
                   IfrCheckBox = (EFI_IFR_CHECKBOX *) IfrOpCodeHeader;
                   DEBUG ((DEBUG_INFO, "      Flags         - 0x%02x\n", IfrCheckBox->Flags));
                   break;
                 case EFI_IFR_NUMERIC_OP:
                   IfrNumeric = (EFI_IFR_NUMERIC *) IfrOpCodeHeader;
                   DEBUG ((DEBUG_INFO, "      Flags         - 0x%02x\n", IfrNumeric->Flags));
-                  switch (IfrNumeric->Flags & EFI_IFR_NUMERIC_SIZE) {
-                  case EFI_IFR_NUMERIC_SIZE_1:
-                    DEBUG ((DEBUG_INFO, "      MinValue      - 0x%02x\n", IfrNumeric->data.u8.MinValue));
-                    DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%02x\n", IfrNumeric->data.u8.MaxValue));
-                    DEBUG ((DEBUG_INFO, "      Step          - 0x%02x\n", IfrNumeric->data.u8.Step));
-                    break;
-                  case EFI_IFR_NUMERIC_SIZE_2:
-                    DEBUG ((DEBUG_INFO, "      MinValue      - 0x%04x\n", IfrNumeric->data.u16.MinValue));
-                    DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%04x\n", IfrNumeric->data.u16.MaxValue));
-                    DEBUG ((DEBUG_INFO, "      Step          - 0x%04x\n", IfrNumeric->data.u16.Step));
-                    break;
-                  case EFI_IFR_NUMERIC_SIZE_4:
+                  if (QuestionStoredInBitField) {
+                    //
+                    // For Numeric stored in bit field, the MinValue,MaxValue and Step are saved as UINT32 type.
+                    //
                     DEBUG ((DEBUG_INFO, "      MinValue      - 0x%08x\n", IfrNumeric->data.u32.MinValue));
                     DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%08x\n", IfrNumeric->data.u32.MaxValue));
                     DEBUG ((DEBUG_INFO, "      Step          - 0x%08x\n", IfrNumeric->data.u32.Step));
-                    break;
-                  case EFI_IFR_NUMERIC_SIZE_8:
-                    DEBUG ((DEBUG_INFO, "      MinValue      - 0x%016lx\n", IfrNumeric->data.u64.MinValue));
-                    DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%016lx\n", IfrNumeric->data.u64.MaxValue));
-                    DEBUG ((DEBUG_INFO, "      Step          - 0x%016lx\n", IfrNumeric->data.u64.Step));
-                    break;
+                  } else {
+                    switch (IfrNumeric->Flags & EFI_IFR_NUMERIC_SIZE) {
+                    case EFI_IFR_NUMERIC_SIZE_1:
+                      DEBUG ((DEBUG_INFO, "      MinValue      - 0x%02x\n", IfrNumeric->data.u8.MinValue));
+                      DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%02x\n", IfrNumeric->data.u8.MaxValue));
+                      DEBUG ((DEBUG_INFO, "      Step          - 0x%02x\n", IfrNumeric->data.u8.Step));
+                      break;
+                    case EFI_IFR_NUMERIC_SIZE_2:
+                      DEBUG ((DEBUG_INFO, "      MinValue      - 0x%04x\n", IfrNumeric->data.u16.MinValue));
+                      DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%04x\n", IfrNumeric->data.u16.MaxValue));
+                      DEBUG ((DEBUG_INFO, "      Step          - 0x%04x\n", IfrNumeric->data.u16.Step));
+                      break;
+                    case EFI_IFR_NUMERIC_SIZE_4:
+                      DEBUG ((DEBUG_INFO, "      MinValue      - 0x%08x\n", IfrNumeric->data.u32.MinValue));
+                      DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%08x\n", IfrNumeric->data.u32.MaxValue));
+                      DEBUG ((DEBUG_INFO, "      Step          - 0x%08x\n", IfrNumeric->data.u32.Step));
+                      break;
+                    case EFI_IFR_NUMERIC_SIZE_8:
+                      DEBUG ((DEBUG_INFO, "      MinValue      - 0x%016lx\n", IfrNumeric->data.u64.MinValue));
+                      DEBUG ((DEBUG_INFO, "      MaxValue      - 0x%016lx\n", IfrNumeric->data.u64.MaxValue));
+                      DEBUG ((DEBUG_INFO, "      Step          - 0x%016lx\n", IfrNumeric->data.u64.Step));
+                      break;
+                    }
                   }
                   break;
                 case EFI_IFR_ORDERED_LIST_OP:
                   IfrOrderedList = (EFI_IFR_ORDERED_LIST *) IfrOpCodeHeader;
                   DEBUG ((DEBUG_INFO, "      MaxContainers - 0x%02x\n", IfrOrderedList->MaxContainers));
@@ -486,28 +521,39 @@ MergeHiiQuestion (
   UINT64                            Maximum2;
   UINT64                            OneValue2;
   UINT8                             *Ptr;
   UINT8                             *Ptr1;
   UINT8                             *Ptr2;
+  UINT16                            ArrayIndex;
 
   //
   // Hii Question from Hii Database has high priority.
   // Do not to merge Hii Question from Fv to Hii Question from Hii Database.
   //
   if (FromFv) {
     InternalVarCheckFreePool (HiiQuestion);
     return;
   }
 
-  HiiQuestion1 = HiiVariableNode->HiiQuestionArray[HiiQuestion->VarOffset];
+  if (HiiQuestion->BitFieldStore) {
+    ArrayIndex = HiiQuestion->VarOffset;  } else {
+    ArrayIndex = HiiQuestion->VarOffset * 8;  }
+
+  HiiQuestion1 = HiiVariableNode->HiiQuestionArray[ArrayIndex];
   HiiQuestion2 = HiiQuestion;
 
   ASSERT ((HiiQuestion1->OpCode == HiiQuestion2->OpCode) && (HiiQuestion1->StorageWidth == HiiQuestion2->StorageWidth));
 
   switch (HiiQuestion1->OpCode) {
     case EFI_IFR_ONE_OF_OP:
-      DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_ONE_OF_OP VarOffset = 0x%04x\n", HiiQuestion1->VarOffset));
+      if (HiiQuestion1->BitFieldStore) {
+        DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_ONE_OF_OP VarOffset (bit level) = 0x%04x\n", HiiQuestion1->VarOffset));
+      } else {
+        DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_ONE_OF_OP VarOffset = 0x%04x\n", HiiQuestion1->VarOffset));
+      }
       //
       // Get the length of Hii Question 1.
       //
       NewLength = HiiQuestion1->Length;
 
@@ -578,21 +624,29 @@ MergeHiiQuestion (
             Ptr += HiiQuestion1->StorageWidth;
           }
           Ptr2 += HiiQuestion2->StorageWidth;
         }
 
-        HiiVariableNode->HiiQuestionArray[HiiQuestion1->VarOffset] = NewHiiQuestion;
+        HiiVariableNode->HiiQuestionArray[ArrayIndex] = NewHiiQuestion;
         InternalVarCheckFreePool (HiiQuestion1);
       }
       break;
 
     case EFI_IFR_CHECKBOX_OP:
-      DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_CHECKBOX_OP VarOffset = 0x%04x\n", HiiQuestion1->VarOffset));
+      if (HiiQuestion1->BitFieldStore) {
+        DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_CHECKBOX_OP VarOffset (bit level) = 0x%04x\n", HiiQuestion1->VarOffset));
+      } else {
+        DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_CHECKBOX_OP VarOffset = 0x%04x\n", HiiQuestion1->VarOffset));
+      }
       break;
 
     case EFI_IFR_NUMERIC_OP:
-      DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_NUMERIC_OP VarOffset = 0x%04x\n", HiiQuestion1->VarOffset));
+      if (HiiQuestion1->BitFieldStore) {
+        DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_NUMERIC_OP VarOffset (bit level) = 0x%04x\n", HiiQuestion1->VarOffset));
+      } else {
+        DEBUG ((DEBUG_INFO, "MergeHiiQuestion - EFI_IFR_NUMERIC_OP VarOffset = 0x%04x\n", HiiQuestion1->VarOffset));
+      }
       //
       // Get minimum and maximum of Hii Question 1.
       //
       Minimum1 = 0;
       Maximum1 = 0;
@@ -703,11 +757,11 @@ MergeHiiQuestion (
             Ptr += HiiQuestion1->StorageWidth;
           }
           Ptr2 += HiiQuestion2->StorageWidth;
         }
 
-        HiiVariableNode->HiiQuestionArray[HiiQuestion1->VarOffset] = NewHiiQuestion;
+        HiiVariableNode->HiiQuestionArray[ArrayIndex] = NewHiiQuestion;
         InternalVarCheckFreePool (HiiQuestion1);
       }
       break;
 
     default:
@@ -829,29 +883,42 @@ GetOneOfOption (
 
 /**
   Parse Hii Question Oneof.
 
   @param[in] IfrOpCodeHeader    Pointer to Ifr OpCode header.
+  @param[in] StoredInBitField   Whether the OneOf is stored in bit field Storage.
 
   return Pointer to Hii Question.
 
 **/
 VAR_CHECK_HII_QUESTION_HEADER *
 ParseHiiQuestionOneOf (
-  IN EFI_IFR_OP_HEADER  *IfrOpCodeHeader
+  IN EFI_IFR_OP_HEADER  *IfrOpCodeHeader,
+  IN BOOLEAN            StoredInBitField
   )
 {
   EFI_IFR_ONE_OF                *IfrOneOf;
   VAR_CHECK_HII_QUESTION_ONEOF  *OneOf;
   UINTN                         Length;
   UINT8                         Width;
   UINTN                         OptionCount;
   UINT8                         OptionWidth;
+  UINT8                         BitWidth;
 
   IfrOneOf = (EFI_IFR_ONE_OF *) IfrOpCodeHeader;
+  BitWidth = 0;
 
-  Width = (UINT8) (1 << (IfrOneOf->Flags & EFI_IFR_NUMERIC_SIZE));
+  if (StoredInBitField) {
+    //
+    // When OneOf stored in bit field, the bit width is saved in the lower six bits of the flag.
+    // And the options in the OneOf is saved as UINT32 type.
+    //
+    BitWidth = IfrOneOf->Flags & EDKII_IFR_NUMERIC_SIZE_BIT;
+    Width = sizeof (UINT32);
+  } else {
+    Width = (UINT8) (1 << (IfrOneOf->Flags & EFI_IFR_NUMERIC_SIZE));  }
 
   GetOneOfOption (IfrOpCodeHeader, &OptionCount, &OptionWidth, NULL);
   ASSERT (Width == OptionWidth);
 
   Length = sizeof (*OneOf) + OptionCount * Width; @@ -859,28 +926,35 @@ ParseHiiQuestionOneOf (
   OneOf = InternalVarCheckAllocateZeroPool (Length);
   ASSERT (OneOf != NULL);
   OneOf->OpCode       = EFI_IFR_ONE_OF_OP;
   OneOf->Length       = (UINT8) Length;
   OneOf->VarOffset    = IfrOneOf->Question.VarStoreInfo.VarOffset;
-  OneOf->StorageWidth = Width;
+  if (StoredInBitField) {
+    OneOf->StorageWidth = BitWidth;
+  } else {
+    OneOf->StorageWidth = Width;
+  }
+  OneOf->BitFieldStore = StoredInBitField;
 
   GetOneOfOption (IfrOpCodeHeader, &OptionCount, &OptionWidth, OneOf + 1);
 
   return (VAR_CHECK_HII_QUESTION_HEADER *) OneOf;  }
 
 /**
   Parse Hii Question CheckBox.
 
   @param[in] IfrOpCodeHeader    Pointer to Ifr OpCode header.
+  @param[in] StoredInBitField   Whether the CheckBox is stored in bit field Storage.
 
   return Pointer to Hii Question.
 
 **/
 VAR_CHECK_HII_QUESTION_HEADER *
 ParseHiiQuestionCheckBox (
-  IN EFI_IFR_OP_HEADER  *IfrOpCodeHeader
+  IN EFI_IFR_OP_HEADER  *IfrOpCodeHeader,
+  IN BOOLEAN            StoredInBitField
   )
 {
   EFI_IFR_CHECKBOX                  *IfrCheckBox;
   VAR_CHECK_HII_QUESTION_CHECKBOX   *CheckBox;
 
@@ -889,43 +963,66 @@ ParseHiiQuestionCheckBox (
   CheckBox = InternalVarCheckAllocateZeroPool (sizeof (*CheckBox));
   ASSERT (CheckBox != NULL);
   CheckBox->OpCode       = EFI_IFR_CHECKBOX_OP;
   CheckBox->Length       = (UINT8) sizeof (*CheckBox);;
   CheckBox->VarOffset    = IfrCheckBox->Question.VarStoreInfo.VarOffset;
-  CheckBox->StorageWidth = (UINT8) sizeof (BOOLEAN);
+  if (StoredInBitField) {
+    CheckBox->StorageWidth = 1;
+  } else {
+    CheckBox->StorageWidth = (UINT8) sizeof (BOOLEAN);  }  
+ CheckBox->BitFieldStore = StoredInBitField;
 
   return (VAR_CHECK_HII_QUESTION_HEADER *) CheckBox;  }
 
 /**
   Parse Hii Question Numeric.
 
   @param[in] IfrOpCodeHeader    Pointer to Ifr OpCode header.
+  @param[in] StoredInBitField   Whether the Numeric is stored in bit field Storage.
 
   return Pointer to Hii Question.
 
 **/
 VAR_CHECK_HII_QUESTION_HEADER *
 ParseHiiQuestionNumeric (
-  IN EFI_IFR_OP_HEADER  *IfrOpCodeHeader
+  IN EFI_IFR_OP_HEADER  *IfrOpCodeHeader,
+  IN BOOLEAN            StoredInBitField
   )
 {
   EFI_IFR_NUMERIC                   *IfrNumeric;
   VAR_CHECK_HII_QUESTION_NUMERIC    *Numeric;
   UINT8                             Width;
+  UINT8                             BitWidth;
 
   IfrNumeric = (EFI_IFR_NUMERIC *) IfrOpCodeHeader;
+  BitWidth = 0;
 
   Numeric = InternalVarCheckAllocateZeroPool (sizeof (VAR_CHECK_HII_QUESTION_NUMERIC) + 2 * sizeof (UINT64));
   ASSERT (Numeric != NULL);
 
-  Width = (UINT8) (1 << (IfrNumeric->Flags & EFI_IFR_NUMERIC_SIZE));
+  if (StoredInBitField) {
+    //
+    // When Numeric stored in bit field, the bit field width is saved in the lower six bits of the flag.
+    // And the Minimum Maximum of Numeric is saved as UINT32 type.
+    //
+    BitWidth = IfrNumeric->Flags & EDKII_IFR_NUMERIC_SIZE_BIT;
+    Width = sizeof (UINT32);
+  } else {
+    Width = (UINT8) (1 << (IfrNumeric->Flags & EFI_IFR_NUMERIC_SIZE));  
+ }
 
   Numeric->OpCode       = EFI_IFR_NUMERIC_OP;
   Numeric->Length       = (UINT8) (sizeof (VAR_CHECK_HII_QUESTION_NUMERIC) + 2 * Width);
-  Numeric->VarOffset    = IfrNumeric->Question.VarStoreInfo.VarOffset;
-  Numeric->StorageWidth = Width;
+  Numeric->VarOffset            = IfrNumeric->Question.VarStoreInfo.VarOffset;
+  if (StoredInBitField) {
+    Numeric->StorageWidth = BitWidth;
+  } else {
+    Numeric->StorageWidth         = Width;
+  }
+  Numeric->BitFieldStore = StoredInBitField;
 
   CopyMem (Numeric + 1, &IfrNumeric->data, Width * 2);
 
   return (VAR_CHECK_HII_QUESTION_HEADER *) Numeric;  } @@ -955,15 +1052,16 @@ ParseHiiQuestionOrderedList (
 
   Length = sizeof (*OrderedList) + OptionCount * OptionWidth;
 
   OrderedList = InternalVarCheckAllocateZeroPool (Length);
   ASSERT (OrderedList != NULL);
-  OrderedList->OpCode        = EFI_IFR_ORDERED_LIST_OP;
-  OrderedList->Length        = (UINT8) Length;
-  OrderedList->VarOffset     = IfrOrderedList->Question.VarStoreInfo.VarOffset;
-  OrderedList->StorageWidth  = OptionWidth;
-  OrderedList->MaxContainers = IfrOrderedList->MaxContainers;
+  OrderedList->BitFieldStore        = FALSE;
+  OrderedList->OpCode               = EFI_IFR_ORDERED_LIST_OP;
+  OrderedList->Length               = (UINT8) Length;
+  OrderedList->VarOffset            = IfrOrderedList->Question.VarStoreInfo.VarOffset;
+  OrderedList->StorageWidth         = OptionWidth;
+  OrderedList->MaxContainers        = IfrOrderedList->MaxContainers;
 
   GetOneOfOption (IfrOpCodeHeader, &OptionCount, &OptionWidth, OrderedList + 1);
 
   return (VAR_CHECK_HII_QUESTION_HEADER *) OrderedList;  } @@ -972,32 +1070,38 @@ ParseHiiQuestionOrderedList (
   Parse and create Hii Question node.
 
   @param[in] HiiVariableNode    Pointer to Hii Variable node.
   @param[in] IfrOpCodeHeader    Pointer to Ifr OpCode header.
   @param[in] FromFv             Hii Question from FV.
+  @param[in] StoredInBitField   Whether the Question is stored in bit field Storage.
 
 **/
 VOID
 ParseHiiQuestion (
   IN VAR_CHECK_HII_VARIABLE_NODE    *HiiVariableNode,
   IN  EFI_IFR_OP_HEADER             *IfrOpCodeHeader,
-  IN BOOLEAN                        FromFv
+  IN BOOLEAN                        FromFv,
+  IN BOOLEAN                        StoredInBitField
   )
 {
   VAR_CHECK_HII_QUESTION_HEADER *HiiQuestion;
+  UINT16                        ArrayIndex;
 
+  //
+  // Currently only OneOf, CheckBox and Numeric can be stored in bit field.
+  //
   switch (IfrOpCodeHeader->OpCode) {
     case EFI_IFR_ONE_OF_OP:
-      HiiQuestion = ParseHiiQuestionOneOf (IfrOpCodeHeader);
+      HiiQuestion = ParseHiiQuestionOneOf (IfrOpCodeHeader, 
+ StoredInBitField);
       break;
 
     case EFI_IFR_CHECKBOX_OP:
-      HiiQuestion = ParseHiiQuestionCheckBox (IfrOpCodeHeader);
+      HiiQuestion = ParseHiiQuestionCheckBox (IfrOpCodeHeader, 
+ StoredInBitField);
       break;
 
     case EFI_IFR_NUMERIC_OP:
-      HiiQuestion = ParseHiiQuestionNumeric (IfrOpCodeHeader);
+      HiiQuestion = ParseHiiQuestionNumeric (IfrOpCodeHeader, 
+ StoredInBitField);
       break;
 
     case EFI_IFR_ORDERED_LIST_OP:
       HiiQuestion = ParseHiiQuestionOrderedList (IfrOpCodeHeader);
       break;
@@ -1006,14 +1110,19 @@ ParseHiiQuestion (
       ASSERT (FALSE);
       return;
       break;
   }
 
-  if (HiiVariableNode->HiiQuestionArray[HiiQuestion->VarOffset] != NULL) {
+  if  (StoredInBitField) {
+    ArrayIndex = HiiQuestion->VarOffset;  } else {
+    ArrayIndex = HiiQuestion->VarOffset * 8;  }  if 
+ (HiiVariableNode->HiiQuestionArray[ArrayIndex] != NULL) {
     MergeHiiQuestion (HiiVariableNode, HiiQuestion, FromFv);
   } else {
-    HiiVariableNode->HiiQuestionArray[HiiQuestion->VarOffset] = HiiQuestion;
+    HiiVariableNode->HiiQuestionArray[ArrayIndex] = HiiQuestion;
   }
 }
 
 /**
   Find Hii variable node by name and GUID.
@@ -1164,11 +1273,11 @@ CreateHiiVariableNode (
     HiiVariableNode->HiiVariable = HiiVariable;
     //
     // The variable store identifier, which is unique within the current form set.
     //
     HiiVariableNode->VarStoreId = IfrEfiVarStore->VarStoreId;
-    HiiVariableNode->HiiQuestionArray = InternalVarCheckAllocateZeroPool (IfrEfiVarStore->Size * sizeof (VAR_CHECK_HII_QUESTION_HEADER *));
+    HiiVariableNode->HiiQuestionArray = 
+ InternalVarCheckAllocateZeroPool (IfrEfiVarStore->Size * 8 * sizeof 
+ (VAR_CHECK_HII_QUESTION_HEADER *));
 
     InsertTailList (&mVarCheckHiiList, &HiiVariableNode->Link);
   } else {
     HiiVariableNode->VarStoreId = IfrEfiVarStore->VarStoreId;
   }
@@ -1237,24 +1346,37 @@ VarCheckParseHiiPackage (
   )
 {
   EFI_HII_PACKAGE_HEADER        *HiiPackageHeader;
   EFI_IFR_OP_HEADER             *IfrOpCodeHeader;
   VAR_CHECK_HII_VARIABLE_NODE   *HiiVariableNode;
+  BOOLEAN                       QuestionStoredInBitField;
 
   //
   // Parse and create Hii Variable node list for this Hii Package.
   //
   ParseHiiVariable (HiiPackage);
 
   HiiPackageHeader = (EFI_HII_PACKAGE_HEADER *) HiiPackage;
 
+  QuestionStoredInBitField = FALSE;
+
   switch (HiiPackageHeader->Type) {
     case EFI_HII_PACKAGE_FORMS:
       IfrOpCodeHeader = (EFI_IFR_OP_HEADER *) (HiiPackageHeader + 1);
 
       while ((UINTN) IfrOpCodeHeader < (UINTN) HiiPackageHeader + HiiPackageHeader->Length) {
         switch (IfrOpCodeHeader->OpCode) {
+          case EFI_IFR_GUID_OP:
+            if (CompareGuid ((EFI_GUID *)((UINTN)IfrOpCodeHeader + sizeof (EFI_IFR_OP_HEADER)), &gEdkiiIfrBitVarstoreGuid)) {
+              QuestionStoredInBitField = TRUE;
+            }
+            break;
+
+          case EFI_IFR_END_OP:
+            QuestionStoredInBitField = FALSE;
+            break;
+
           case EFI_IFR_ONE_OF_OP:
           case EFI_IFR_CHECKBOX_OP:
           case EFI_IFR_NUMERIC_OP:
           case EFI_IFR_ORDERED_LIST_OP:
             HiiVariableNode = FindHiiVariableNodeByVarStoreId (((EFI_IFR_ONE_OF *) IfrOpCodeHeader)->Question.VarStoreId);
@@ -1268,11 +1390,11 @@ VarCheckParseHiiPackage (
                 //
             } else {
               //
               // Normal IFR
               //
-              ParseHiiQuestion (HiiVariableNode, IfrOpCodeHeader, FromFv);
+              ParseHiiQuestion (HiiVariableNode, IfrOpCodeHeader, 
+ FromFv, QuestionStoredInBitField);
             }
           default:
             break;
         }
         IfrOpCodeHeader = (EFI_IFR_OP_HEADER *) ((UINTN) IfrOpCodeHeader + IfrOpCodeHeader->Length); @@ -1339,11 +1461,11 @@ DestroyHiiVariableNode (
     RemoveEntryList (&HiiVariableNode->Link);
 
     //
     // Free the allocated buffer.
     //
-    for (Index = 0; Index < HiiVariableNode->HiiVariable->Size; Index++) {
+    for (Index = 0; Index < HiiVariableNode->HiiVariable->Size * 
+ (UINTN) 8; Index++) {
       if (HiiVariableNode->HiiQuestionArray[Index] != NULL) {
         InternalVarCheckFreePool (HiiVariableNode->HiiQuestionArray[Index]);
       }
     }
     InternalVarCheckFreePool (HiiVariableNode->HiiQuestionArray);
@@ -1387,11 +1509,11 @@ BuildVarCheckHiiBin (
     BinSize = (UINT32) HEADER_ALIGN (BinSize);
 
     HiiVariableNode = VAR_CHECK_HII_VARIABLE_FROM_LINK (HiiVariableLink);
     HiiVariableLength = HiiVariableNode->HiiVariable->HeaderLength;
 
-    for (Index = 0; Index < HiiVariableNode->HiiVariable->Size; Index++) {
+    for (Index = 0; Index < HiiVariableNode->HiiVariable->Size * 
+ (UINTN) 8; Index++) {
       if (HiiVariableNode->HiiQuestionArray[Index] != NULL) {
         //
         // For Hii Question header align.
         //
         HiiVariableLength = (UINT32) HEADER_ALIGN (HiiVariableLength); @@ -1432,11 +1554,11 @@ BuildVarCheckHiiBin (
 
     HiiVariableNode = VAR_CHECK_HII_VARIABLE_FROM_LINK (HiiVariableLink);
     CopyMem (Ptr, HiiVariableNode->HiiVariable, HiiVariableNode->HiiVariable->HeaderLength);
     Ptr += HiiVariableNode->HiiVariable->HeaderLength;
 
-    for (Index = 0; Index < HiiVariableNode->HiiVariable->Size; Index++) {
+    for (Index = 0; Index < HiiVariableNode->HiiVariable->Size * 
+ (UINTN) 8; Index++) {
       if (HiiVariableNode->HiiQuestionArray[Index] != NULL) {
         //
         // For Hii Question header align.
         //
         Ptr = (UINT8 *) HEADER_ALIGN (Ptr); diff --git a/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLib.inf b/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLib.inf
index 98e6983..aeca3ef 100644
--- a/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLib.inf
+++ b/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLib.inf
@@ -1,9 +1,9 @@
 ## @file
 #  NULL class library to register var check HII handler.
 #
-#  Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2015 - 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 @@ -44,10 +44,13 @@
   UefiBootServicesTableLib
   MemoryAllocationLib
   PcdLib
   VarCheckLib
 
+[Guids]
+  gEdkiiIfrBitVarstoreGuid                  ## SOMETIMES_CONSUMES  ## GUID
+
 [Protocols]
   gEfiFirmwareVolume2ProtocolGuid           ## SOMETIMES_CONSUMES
   gEfiFirmwareVolumeBlock2ProtocolGuid      ## SOMETIMES_CONSUMES
   gEfiHiiDatabaseProtocolGuid               ## SOMETIMES_CONSUMES
 
diff --git a/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLibNullClass.c b/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLibNullClass.c
index 46a93bd..f0274d2 100644
--- a/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLibNullClass.c
+++ b/MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLibNullClass.c
@@ -91,32 +91,65 @@ VarCheckHiiQuestion (
   UINT64   Maximum;
   UINT64   OneValue;
   UINT8    *Ptr;
   UINT8    Index;
   UINT8    MaxContainers;
+  UINT8    StartBit;
+  UINT8    EndBit;
+  UINT8    TotalBits;
+  UINT16   VarOffsetByteLevel;
+  UINT8    StorageWidthByteLevel;
+
+  if (HiiQuestion->BitFieldStore) {
+    VarOffsetByteLevel    = HiiQuestion->VarOffset / 8;
+    TotalBits             = HiiQuestion->VarOffset % 8 + HiiQuestion->StorageWidth;
+    StorageWidthByteLevel = (TotalBits % 8 == 0 ? TotalBits / 8: 
+ TotalBits / 8 + 1);  } else {
+    VarOffsetByteLevel =  HiiQuestion->VarOffset;
+    StorageWidthByteLevel = HiiQuestion->StorageWidth;  }
 
-  if (((UINT32) HiiQuestion->VarOffset + HiiQuestion->StorageWidth) > DataSize) {
-    DEBUG ((DEBUG_INFO , "VarCheckHiiQuestion fail: (VarOffset(0x%04x) + StorageWidth(0x%02x)) > Size(0x%x)\n", HiiQuestion->VarOffset, HiiQuestion->StorageWidth, DataSize));
+  if (((UINT32) VarOffsetByteLevel + StorageWidthByteLevel) > DataSize) {
+    DEBUG ((DEBUG_INFO , "VarCheckHiiQuestion fail: (VarOffset(0x%04x) 
+ + StorageWidth(0x%02x)) > Size(0x%x)\n", VarOffsetByteLevel, 
+ StorageWidthByteLevel, DataSize));
     return FALSE;
   }
 
   OneData = 0;
-  CopyMem (&OneData, (UINT8 *) Data + HiiQuestion->VarOffset, HiiQuestion->StorageWidth);
+  CopyMem (&OneData, (UINT8 *) Data + VarOffsetByteLevel, 
+ StorageWidthByteLevel);  if (HiiQuestion->BitFieldStore) {
+    //
+    // Get the value form the bit field.
+    //
+    StartBit = HiiQuestion->VarOffset % 8;
+    EndBit   = StartBit + HiiQuestion->StorageWidth - 1;
+    OneData  = BitFieldRead64 (OneData, StartBit, EndBit);  }
 
   switch (HiiQuestion->OpCode) {
     case EFI_IFR_ONE_OF_OP:
       Ptr = (UINT8 *) ((VAR_CHECK_HII_QUESTION_ONEOF *) HiiQuestion + 1);
       while ((UINTN) Ptr < (UINTN) HiiQuestion + HiiQuestion->Length) {
         OneValue = 0;
-        CopyMem (&OneValue, Ptr, HiiQuestion->StorageWidth);
+        if (HiiQuestion->BitFieldStore) {
+          //
+          // For OneOf stored in bit field, the value of options are saved as UINT32 type.
+          //
+          CopyMem (&OneValue, Ptr, sizeof (UINT32));
+        } else {
+          CopyMem (&OneValue, Ptr, HiiQuestion->StorageWidth);
+        }
         if (OneData == OneValue) {
           //
           // Match
           //
           break;
         }
-        Ptr += HiiQuestion->StorageWidth;
+        if (HiiQuestion->BitFieldStore) {
+          Ptr += sizeof (UINT32);
+        } else {
+          Ptr += HiiQuestion->StorageWidth;
+        }
       }
       if ((UINTN) Ptr >= ((UINTN) HiiQuestion + HiiQuestion->Length)) {
         //
         // No match
         //
@@ -136,14 +169,24 @@ VarCheckHiiQuestion (
 
     case EFI_IFR_NUMERIC_OP:
       Minimum = 0;
       Maximum = 0;
       Ptr = (UINT8 *) ((VAR_CHECK_HII_QUESTION_NUMERIC *) HiiQuestion + 1);
-      CopyMem (&Minimum, Ptr, HiiQuestion->StorageWidth);
-      Ptr += HiiQuestion->StorageWidth;
-      CopyMem (&Maximum, Ptr, HiiQuestion->StorageWidth);
-      Ptr += HiiQuestion->StorageWidth;
+      if (HiiQuestion->BitFieldStore) {
+        //
+        // For Numeric stored in bit field, the value of Maximum/Minimum are saved as UINT32 type.
+        //
+        CopyMem (&Minimum, Ptr, sizeof (UINT32));
+        Ptr += sizeof (UINT32);
+        CopyMem (&Maximum, Ptr, sizeof (UINT32));
+        Ptr += sizeof (UINT32);
+      } else {
+        CopyMem (&Minimum, Ptr, HiiQuestion->StorageWidth);
+        Ptr += HiiQuestion->StorageWidth;
+        CopyMem (&Maximum, Ptr, HiiQuestion->StorageWidth);
+        Ptr += HiiQuestion->StorageWidth;
+      }
 
       //
       // No need to check Step, because it is ONLY for UI.
       //
       if ((OneData < Minimum) || (OneData > Maximum)) { @@ -341,75 +384,112 @@ DumpHiiQuestion (
   UINT64    Minimum;
   UINT64    Maximum;
   UINT64    OneValue;
   UINT8     *Ptr;
 
+  if (HiiQuestion->BitFieldStore) {
+    DEBUG ((DEBUG_INFO, "----DumpHiiQuestion-The Question is stored in 
+ bit field----\n"));  } else {
+    DEBUG ((DEBUG_INFO, "----DumpHiiQuestion-The Question is stored in 
+ byte field----\n"));  }
+
   DEBUG ((DEBUG_INFO, "  VAR_CHECK_HII_QUESTION_HEADER\n"));
   DEBUG ((DEBUG_INFO, "    OpCode        - 0x%02x (%a)\n", HiiQuestion->OpCode, HiiOpCodeToStr (HiiQuestion->OpCode)));
   DEBUG ((DEBUG_INFO, "    Length        - 0x%02x\n", HiiQuestion->Length));
-  DEBUG ((DEBUG_INFO, "    VarOffset     - 0x%04x\n", HiiQuestion->VarOffset));
-  DEBUG ((DEBUG_INFO, "    StorageWidth  - 0x%02x\n", HiiQuestion->StorageWidth));
+
+  if (HiiQuestion->BitFieldStore) {
+    DEBUG ((DEBUG_INFO, "  VarOffset(bit level)     - 0x%04x\n", HiiQuestion->VarOffset));
+    DEBUG ((DEBUG_INFO, "  StorageWidth(bit level)  - 0x%02x\n", 
+ HiiQuestion->StorageWidth));  } else {
+    DEBUG ((DEBUG_INFO, "    VarOffset     - 0x%04x\n", HiiQuestion->VarOffset));
+    DEBUG ((DEBUG_INFO, "    StorageWidth  - 0x%02x\n", HiiQuestion->StorageWidth));
+  }
 
   switch (HiiQuestion->OpCode) {
     case EFI_IFR_ONE_OF_OP:
       Ptr = (UINT8 *) ((VAR_CHECK_HII_QUESTION_ONEOF *) HiiQuestion + 1);
       while ((UINTN) Ptr < ((UINTN) HiiQuestion + HiiQuestion->Length)) {
         OneValue = 0;
-        CopyMem (&OneValue, Ptr, HiiQuestion->StorageWidth);
+        if (HiiQuestion->BitFieldStore) {
+          //
+          // For OneOf stored in bit field, the value of options are saved as UINT32 type.
+          //
+          CopyMem (&OneValue, Ptr, sizeof (UINT32));
+          DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%08x\n", OneValue));
+        } else {
+          CopyMem (&OneValue, Ptr, HiiQuestion->StorageWidth);
+          switch (HiiQuestion->StorageWidth) {
+            case sizeof (UINT8):
+              DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%02x\n", OneValue));
+              break;
+            case sizeof (UINT16):
+              DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%04x\n", OneValue));
+              break;
+            case sizeof (UINT32):
+              DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%08x\n", OneValue));
+              break;
+            case sizeof (UINT64):
+              DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%016lx\n", OneValue));
+              break;
+            default:
+              ASSERT (FALSE);
+              break;
+          }
+        }
+        if (HiiQuestion->BitFieldStore) {
+          Ptr += sizeof (UINT32);
+        } else {
+          Ptr += HiiQuestion->StorageWidth;
+        }
+      }
+      break;
+
+    case EFI_IFR_CHECKBOX_OP:
+      break;
+
+    case EFI_IFR_NUMERIC_OP:
+      Minimum = 0;
+      Maximum = 0;
+      Ptr = (UINT8 *) ((VAR_CHECK_HII_QUESTION_NUMERIC *) HiiQuestion + 1);
+      if(HiiQuestion->BitFieldStore) {
+        //
+        // For Numeric stored in bit field, the value of Maximum/Minimum are saved as UINT32 type.
+        //
+        CopyMem (&Minimum, Ptr, sizeof (UINT32));
+        Ptr += sizeof (UINT32);
+        CopyMem (&Maximum, Ptr, sizeof (UINT32));
+        Ptr += sizeof (UINT32);
+
+        DEBUG ((DEBUG_INFO, "    Minimum       - 0x%08x\n", Minimum));
+        DEBUG ((DEBUG_INFO, "    Maximum       - 0x%08x\n", Maximum));
+      } else {
+        CopyMem (&Minimum, Ptr, HiiQuestion->StorageWidth);
+        Ptr += HiiQuestion->StorageWidth;
+        CopyMem (&Maximum, Ptr, HiiQuestion->StorageWidth);
+        Ptr += HiiQuestion->StorageWidth;
+
         switch (HiiQuestion->StorageWidth) {
           case sizeof (UINT8):
-            DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%02x\n", OneValue));
+            DEBUG ((DEBUG_INFO, "    Minimum       - 0x%02x\n", Minimum));
+            DEBUG ((DEBUG_INFO, "    Maximum       - 0x%02x\n", Maximum));
             break;
           case sizeof (UINT16):
-            DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%04x\n", OneValue));
+            DEBUG ((DEBUG_INFO, "    Minimum       - 0x%04x\n", Minimum));
+            DEBUG ((DEBUG_INFO, "    Maximum       - 0x%04x\n", Maximum));
             break;
           case sizeof (UINT32):
-            DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%08x\n", OneValue));
+            DEBUG ((DEBUG_INFO, "    Minimum       - 0x%08x\n", Minimum));
+            DEBUG ((DEBUG_INFO, "    Maximum       - 0x%08x\n", Maximum));
             break;
           case sizeof (UINT64):
-            DEBUG ((DEBUG_INFO, "    OneOfOption   - 0x%016lx\n", OneValue));
+            DEBUG ((DEBUG_INFO, "    Minimum       - 0x%016lx\n", Minimum));
+            DEBUG ((DEBUG_INFO, "    Maximum       - 0x%016lx\n", Maximum));
             break;
           default:
             ASSERT (FALSE);
             break;
         }
-        Ptr += HiiQuestion->StorageWidth;
-      }
-      break;
-
-    case EFI_IFR_CHECKBOX_OP:
-      break;
-
-    case EFI_IFR_NUMERIC_OP:
-      Minimum = 0;
-      Maximum = 0;
-      Ptr = (UINT8 *) ((VAR_CHECK_HII_QUESTION_NUMERIC *) HiiQuestion + 1);
-      CopyMem (&Minimum, Ptr, HiiQuestion->StorageWidth);
-      Ptr += HiiQuestion->StorageWidth;
-      CopyMem (&Maximum, Ptr, HiiQuestion->StorageWidth);
-      Ptr += HiiQuestion->StorageWidth;
-
-      switch (HiiQuestion->StorageWidth) {
-        case sizeof (UINT8):
-          DEBUG ((DEBUG_INFO, "    Minimum       - 0x%02x\n", Minimum));
-          DEBUG ((DEBUG_INFO, "    Maximum       - 0x%02x\n", Maximum));
-          break;
-        case sizeof (UINT16):
-          DEBUG ((DEBUG_INFO, "    Minimum       - 0x%04x\n", Minimum));
-          DEBUG ((DEBUG_INFO, "    Maximum       - 0x%04x\n", Maximum));
-          break;
-        case sizeof (UINT32):
-          DEBUG ((DEBUG_INFO, "    Minimum       - 0x%08x\n", Minimum));
-          DEBUG ((DEBUG_INFO, "    Maximum       - 0x%08x\n", Maximum));
-          break;
-        case sizeof (UINT64):
-          DEBUG ((DEBUG_INFO, "    Minimum       - 0x%016lx\n", Minimum));
-          DEBUG ((DEBUG_INFO, "    Maximum       - 0x%016lx\n", Maximum));
-          break;
-        default:
-          ASSERT (FALSE);
-          break;
       }
       break;
 
     case EFI_IFR_ORDERED_LIST_OP:
       DEBUG ((DEBUG_INFO, "    MaxContainers - 0x%02x\n", ((VAR_CHECK_HII_QUESTION_ORDEREDLIST *) HiiQuestion)->MaxContainers));
--
1.9.5.msysgit.1

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