X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdeModulePkg%2FCore%2FDxeIplPeim%2FDxeLoad.c;fp=MdeModulePkg%2FCore%2FDxeIplPeim%2FDxeLoad.c;h=d7d693fdeb40350c8a3f9d1acad1fe0303cbd188;hp=aa0507686b27f3ce7afaab1fc606ee2c87fd7c83;hb=d1d89e86ed786f0170848a800e1569805248cb63;hpb=90ae1f0270caae87cf3faddacd8d43ba862a290f

diff --git a/MdeModulePkg/Core/DxeIplPeim/DxeLoad.c b/MdeModulePkg/Core/DxeIplPeim/DxeLoad.c
index aa0507686b..d7d693fdeb 100644
--- a/MdeModulePkg/Core/DxeIplPeim/DxeLoad.c
+++ b/MdeModulePkg/Core/DxeIplPeim/DxeLoad.c
@@ -273,31 +273,36 @@ DxeLoadCore (
     //
   }
 
-  Status = PeiServicesLocatePpi (
-             &gEfiPeiReadOnlyVariable2PpiGuid,
-             0,
-             NULL,
-             (VOID **)&Variable
-             );
-  if (!EFI_ERROR (Status)) {
-    DataSize = sizeof (MemoryData);
-    Status = Variable->GetVariable ( 
-                         Variable, 
-                         EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,
-                         &gEfiMemoryTypeInformationGuid,
-                         NULL,
-                         &DataSize,
-                         &MemoryData
-                         );
-    if (!EFI_ERROR (Status) && ValidateMemoryTypeInfoVariable(MemoryData, DataSize)) {
-      //
-      // Build the GUID'd HOB for DXE
-      //
-      BuildGuidDataHob (
-        &gEfiMemoryTypeInformationGuid,
-        MemoryData,
-        DataSize
-        );
+  if (GetFirstGuidHob ((CONST EFI_GUID *)&gEfiMemoryTypeInformationGuid) == NULL) {
+    //
+    // Don't build GuidHob if GuidHob has been installed.
+    //
+    Status = PeiServicesLocatePpi (
+               &gEfiPeiReadOnlyVariable2PpiGuid,
+               0,
+               NULL,
+               (VOID **)&Variable
+               );
+    if (!EFI_ERROR (Status)) {
+      DataSize = sizeof (MemoryData);
+      Status = Variable->GetVariable ( 
+                           Variable, 
+                           EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,
+                           &gEfiMemoryTypeInformationGuid,
+                           NULL,
+                           &DataSize,
+                           &MemoryData
+                           );
+      if (!EFI_ERROR (Status) && ValidateMemoryTypeInfoVariable(MemoryData, DataSize)) {
+        //
+        // Build the GUID'd HOB for DXE
+        //
+        BuildGuidDataHob (
+          &gEfiMemoryTypeInformationGuid,
+          MemoryData,
+          DataSize
+          );
+      }
     }
   }