- if (TopOfMemory < BASE_2GB) {\r
- AddIoMemoryBaseSizeHob (BASE_2GB, 0xFC000000 - BASE_2GB);\r
- } else {\r
- AddIoMemoryBaseSizeHob (TopOfMemory, 0xFC000000 - TopOfMemory);\r
+ AddIoMemoryRangeHob (0x0A0000, BASE_1MB);\r
+\r
+ //\r
+ // Parse RAM in E820 map\r
+ //\r
+ Status = XenGetE820Map(&E820Map, &E820EntriesCount);\r
+\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ if (E820EntriesCount > 0) {\r
+ EFI_E820_ENTRY64 *Entry;\r
+ UINT32 Loop;\r
+\r
+ for (Loop = 0; Loop < E820EntriesCount; Loop++) {\r
+ Entry = E820Map + Loop;\r
+\r
+ //\r
+ // Only care about RAM\r
+ //\r
+ if (Entry->Type != EfiAcpiAddressRangeMemory) {\r
+ continue;\r
+ }\r
+\r
+ if (Entry->BaseAddr >= BASE_4GB) {\r
+ AddUntestedMemoryBaseSizeHob (Entry->BaseAddr, Entry->Length);\r
+ } else {\r
+ AddMemoryBaseSizeHob (Entry->BaseAddr, Entry->Length);\r
+ }\r
+\r
+ MtrrSetMemoryAttribute (Entry->BaseAddr, Entry->Length, CacheWriteBack);\r
+ }\r