1) Improve the EFI Memory Map stability to improve ACPI S4 support

2) Update DXE IPL to always publish the MemoryTypeInformation HOB



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4327 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Core/DxeIplPeim/DxeLoad.c

@@ -170,6 +170,9 @@ DxeLoadCore (
   EFI_PEI_FV_HANDLE                         VolumeHandle;
   EFI_PEI_FILE_HANDLE                       FileHandle;
   UINTN                                     Instance;
+  EFI_PEI_READ_ONLY_VARIABLE2_PPI           *Variable;
+  UINTN                                     DataSize;
+  EFI_MEMORY_TYPE_INFORMATION               MemoryData [EfiMaxMemoryType + 1];
 
   //
   // if in S3 Resume, restore configure
@@ -192,6 +195,34 @@ DxeLoadCore (
     //
   }
   
+  Status = PeiServicesLocatePpi (
+             &gEfiPeiReadOnlyVariable2PpiGuid,
+             0,
+             NULL,
+             (VOID **)&Variable
+             );
+  ASSERT_EFI_ERROR (Status);
+
+  DataSize = sizeof (MemoryData);
+  Status = Variable->GetVariable ( 
+                       Variable, 
+                       EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,
+                       &gEfiMemoryTypeInformationGuid,
+                       NULL,
+                       &DataSize,
+                       &MemoryData
+                       );
+
+  if (!EFI_ERROR (Status)) {
+    //
+    // Build the GUID'd HOB for DXE
+    //
+    BuildGuidDataHob (
+      &gEfiMemoryTypeInformationGuid,
+      MemoryData,
+      DataSize
+      );
+  }
   //
   // If any FV contains an encapsulated FV extract that FV
   //