MdeModulePkg DxeIpl: Skip install MemoryInfoHob if this hob exists

[mirror_edk2.git] / MdeModulePkg / Core / DxeIplPeim / DxeLoad.c

diff --git a/MdeModulePkg/Core/DxeIplPeim/DxeLoad.c b/MdeModulePkg/Core/DxeIplPeim/DxeLoad.c
index aa0507686b27f3ce7afaab1fc606ee2c87fd7c83..d7d693fdeb40350c8a3f9d1acad1fe0303cbd188 100644 (file)
--- a/MdeModulePkg/Core/DxeIplPeim/DxeLoad.c
+++ b/MdeModulePkg/Core/DxeIplPeim/DxeLoad.c
@@ -273,31 +273,36 @@ DxeLoadCore (
     //\r
   }\r
 \r
-  Status = PeiServicesLocatePpi (\r
-             &gEfiPeiReadOnlyVariable2PpiGuid,\r
-             0,\r
-             NULL,\r
-             (VOID **)&Variable\r
-             );\r
-  if (!EFI_ERROR (Status)) {\r
-    DataSize = sizeof (MemoryData);\r
-    Status = Variable->GetVariable ( \r
-                         Variable, \r
-                         EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,\r
-                         &gEfiMemoryTypeInformationGuid,\r
-                         NULL,\r
-                         &DataSize,\r
-                         &MemoryData\r
-                         );\r
-    if (!EFI_ERROR (Status) && ValidateMemoryTypeInfoVariable(MemoryData, DataSize)) {\r
-      //\r
-      // Build the GUID'd HOB for DXE\r
-      //\r
-      BuildGuidDataHob (\r
-        &gEfiMemoryTypeInformationGuid,\r
-        MemoryData,\r
-        DataSize\r
-        );\r
+  if (GetFirstGuidHob ((CONST EFI_GUID *)&gEfiMemoryTypeInformationGuid) == NULL) {\r
+    //\r
+    // Don't build GuidHob if GuidHob has been installed.\r
+    //\r
+    Status = PeiServicesLocatePpi (\r
+               &gEfiPeiReadOnlyVariable2PpiGuid,\r
+               0,\r
+               NULL,\r
+               (VOID **)&Variable\r
+               );\r
+    if (!EFI_ERROR (Status)) {\r
+      DataSize = sizeof (MemoryData);\r
+      Status = Variable->GetVariable ( \r
+                           Variable, \r
+                           EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,\r
+                           &gEfiMemoryTypeInformationGuid,\r
+                           NULL,\r
+                           &DataSize,\r
+                           &MemoryData\r
+                           );\r
+      if (!EFI_ERROR (Status) && ValidateMemoryTypeInfoVariable(MemoryData, DataSize)) {\r
+        //\r
+        // Build the GUID'd HOB for DXE\r
+        //\r
+        BuildGuidDataHob (\r
+          &gEfiMemoryTypeInformationGuid,\r
+          MemoryData,\r
+          DataSize\r
+          );\r
+      }\r
     }\r
   }\r
 \r