Changeset 77705 in vbox

Timestamp:

Mar 14, 2019 6:32:03 PM (6 years ago)

Author:

vboxsync

Message:

EFI: Register just one low system memory range between 1MB and 4GB.

File:

• trunk/src/VBox/Devices/EFI/FirmwareNew/OvmfPkg/PlatformPei/MemDetect.c (modified) (1 diff)

trunk/src/VBox/Devices/EFI/FirmwareNew/OvmfPkg/PlatformPei/MemDetect.c

@@ -750 +750 @@
   } else {
     LowerMemorySize = GetSystemMemorySizeBelow4gb ();
-
-    //
-    // Determine the range of memory to use during PEI
-    //
-    MemoryBase = PcdGet32 (PcdOvmfDxeMemFvBase) + PcdGet32 (PcdOvmfDxeMemFvSize);
-    MemorySize = LowerMemorySize - MemoryBase;
-    if (MemorySize > SIZE_64MB) {
-      MemoryBase = LowerMemorySize - SIZE_64MB;
-      MemorySize = SIZE_64MB;
-    }
-  }
-  MemorySize -= BASE_64KB; /* Reserves 64KB for ACPI tables. */
+  }
+  LowerMemorySize -= BASE_64KB; /* Reserves 64KB for ACPI tables. */
 
   //
   // Create memory HOBs
   //
-  AddMemoryBaseSizeHob (MemoryBase, MemorySize);
-  AddMemoryRangeHob (BASE_1MB, MemoryBase);
-  MtrrSetMemoryAttribute (BASE_1MB, MemoryBase + MemorySize - BASE_1MB, CacheWriteBack);
+  AddMemoryRangeHob (BASE_1MB, LowerMemorySize);
+  MtrrSetMemoryAttribute (BASE_1MB, LowerMemorySize - BASE_1MB, CacheWriteBack);
   AddMemoryRangeHob (0, BASE_512KB + BASE_128KB);
   MtrrSetMemoryAttribute (0, BASE_512KB + BASE_128KB, CacheWriteBack);