1 files changed, 46 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Library/VariablePolicyLib/VariablePolicyExtraInitNull.c b/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Library/VariablePolicyLib/VariablePolicyExtraInitNull.c
new file mode 100644
index 00000000..3200a842
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Library/VariablePolicyLib/VariablePolicyExtraInitNull.c
@@ -0,0 +1,46 @@
+/** @file -- VariablePolicyExtraInitNull.c
+This file contains extra init and deinit routines that don't do anything
+extra.
+
+Copyright (c) Microsoft Corporation.
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/UefiRuntimeServicesTableLib.h>
+
+
+/**
+  An extra init hook that enables the RuntimeDxe library instance to
+  register VirtualAddress change callbacks. Among other things.
+
+  @retval     EFI_SUCCESS   Everything is good. Continue with init.
+  @retval     Others        Uh... don't continue.
+
+**/
+EFI_STATUS
+VariablePolicyExtraInit (
+  VOID
+  )
+{
+  // NULL implementation.
+  return EFI_SUCCESS;
+}
+
+
+/**
+  An extra deinit hook that enables the RuntimeDxe library instance to
+  register VirtualAddress change callbacks. Among other things.
+
+  @retval     EFI_SUCCESS   Everything is good. Continue with deinit.
+  @retval     Others        Uh... don't continue.
+
+**/
+EFI_STATUS
+VariablePolicyExtraDeinit (
+  VOID
+  )
+{
+  // NULL implementation.
+  return EFI_SUCCESS;
+}