Modify FtwLite and Variable DXE driver to use PCD instead of FlashMap HOB

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1236 6f19259b-4bc3-4df7-8a09-765794883524

2 files changed, 29 insertions, 30 deletions

diff --git a/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.c b/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.c
index cfd3183f09..3fa16172cc 100644
--- a/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.c
+++ b/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.c
@@ -1254,14 +1254,14 @@ Returns:
   UINT32                          Instance;

   EFI_PHYSICAL_ADDRESS            FvVolHdr;

 

-  EFI_FLASH_MAP_ENTRY_DATA        *FlashMapEntryData;

+  UINT64                          TempVariableStoreHeader;

+

   EFI_GCD_MEMORY_SPACE_DESCRIPTOR GcdDescriptor;

   EFI_FLASH_SUBAREA_ENTRY         VariableStoreEntry;

   UINT64                          BaseAddress;

   UINT64                          Length;

   UINTN                           Index;

   UINT8                           Data;

-  EFI_PEI_HOB_POINTERS            GuidHob;

 

   Status = gBS->AllocatePool (

                   EfiRuntimeServicesData,

@@ -1305,35 +1305,13 @@ Returns:
   // Get non volatile varaible store

   //

 

-  FlashMapEntryData = NULL;

-

-  GuidHob.Raw = GetHobList ();

-  while (NULL != (GuidHob.Raw = GetNextGuidHob (&gEfiFlashMapHobGuid, GuidHob.Raw))) {

-    FlashMapEntryData = (EFI_FLASH_MAP_ENTRY_DATA *) GET_GUID_HOB_DATA (GuidHob.Guid);

-

-    if (FlashMapEntryData->AreaType == EFI_FLASH_AREA_EFI_VARIABLES) {

-      break;

-    }

-    GuidHob.Raw = GET_NEXT_HOB (GuidHob);

-  }

-

-  if (NULL == GuidHob.Raw || FlashMapEntryData == NULL) {

-    gBS->FreePool (mVariableModuleGlobal);

-    gBS->FreePool (VolatileVariableStore);

-    return EFI_NOT_FOUND;

-  }

-

-  //

-  // Currently only one non-volatile variable store is supported

-  //

-  if (FlashMapEntryData->NumEntries != 1) {

-    gBS->FreePool (mVariableModuleGlobal);

-    gBS->FreePool (VolatileVariableStore);

-    return EFI_UNSUPPORTED;

-  }

-

-  CopyMem (&VariableStoreEntry, &FlashMapEntryData->Entries[0], sizeof (VariableStoreEntry));

+  TempVariableStoreHeader = (UINT64) PcdGet32 (PcdFlashNvStorageVariableBase);

+  VariableStoreEntry.Base = TempVariableStoreHeader + \

+                              (((EFI_FIRMWARE_VOLUME_HEADER *) (UINTN) (TempVariableStoreHeader)) -> HeaderLength);

+  VariableStoreEntry.Length = (UINT64) PcdGet32 (PcdFlashNvStorageVariableSize) - \

+                                (((EFI_FIRMWARE_VOLUME_HEADER *) (UINTN) (TempVariableStoreHeader)) -> HeaderLength);

 

+  VariableStoreEntry.Length = (UINT64) PcdGet32 (PcdFlashNvStorageVariableSize);

   //

   // Mark the variable storage region of the FLASH as RUNTIME

   //

diff --git a/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.msa b/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.msa
index c3f538abe6..049ee3731d 100644
--- a/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.msa
+++ b/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.msa
@@ -31,6 +31,9 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.-->
   </ModuleDefinitions>

   <LibraryClassDefinitions>

     <LibraryClass Usage="ALWAYS_CONSUMED">

+      <Keyword>PcdLib</Keyword>

+    </LibraryClass>  

+    <LibraryClass Usage="ALWAYS_CONSUMED">

       <Keyword>BaseLib</Keyword>

     </LibraryClass>

     <LibraryClass Usage="ALWAYS_CONSUMED">

@@ -150,4 +153,22 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.-->
       <SetVirtualAddressMapCallBack>VariableClassAddressChangeEvent</SetVirtualAddressMapCallBack>

     </Extern>

   </Externs>

+  <PcdCoded>

+    <PcdEntry PcdItemType="DYNAMIC">

+      <C_Name>PcdFlashNvStorageVariableBase</C_Name>

+      <TokenSpaceGuidCName>gEfiGenericPlatformTokenSpaceGuid</TokenSpaceGuidCName>

+      <HelpText>

+        The driver gets the Variable store base address from this PCD.  This base address point to

+        an EFI_FIRMWARE_VOLUMN_HEADER struct.

+      </HelpText>

+    </PcdEntry>      

+    <PcdEntry PcdItemType="DYNAMIC">

+      <C_Name>PcdFlashNvStorageVariableSize</C_Name>

+      <TokenSpaceGuidCName>gEfiGenericPlatformTokenSpaceGuid</TokenSpaceGuidCName>

+      <HelpText>

+        The driver gets the Variable store base address from this PCD.  This base address point to

+        an EFI_FIRMWARE_VOLUMN_HEADER struct.

+      </HelpText>      

+    </PcdEntry>     

+  </PcdCoded>  

 </ModuleSurfaceArea>
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