1 files changed, 32 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseLib/AArch64/MemoryFence.asm b/roms/edk2/MdePkg/Library/BaseLib/AArch64/MemoryFence.asm
new file mode 100644
index 000000000..85bc6c0f9
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseLib/AArch64/MemoryFence.asm
@@ -0,0 +1,32 @@
+;------------------------------------------------------------------------------
+;
+; MemoryFence() for AArch64
+;
+; Copyright (c) 2013, ARM Ltd. All rights reserved.
+;
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;
+;------------------------------------------------------------------------------
+
+  EXPORT MemoryFence
+  AREA BaseLib_LowLevel, CODE, READONLY
+
+;/**
+;  Used to serialize load and store operations.
+;
+;  All loads and stores that proceed calls to this function are guaranteed to be
+;  globally visible when this function returns.
+;
+;**/
+;VOID
+;EFIAPI
+;MemoryFence (
+;  VOID
+;  );
+;
+MemoryFence
+    // System wide Data Memory Barrier.
+    dmb sy
+    ret
+
+  END