1 files changed, 71 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Library/AuthVariableLibNull/AuthVariableLibNull.c b/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Library/AuthVariableLibNull/AuthVariableLibNull.c
new file mode 100644
index 00000000..3a064683
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Library/AuthVariableLibNull/AuthVariableLibNull.c
@@ -0,0 +1,71 @@
+/** @file
+  Implements NULL authenticated variable services.
+
+Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/AuthVariableLib.h>
+#include <Library/DebugLib.h>
+
+/**
+  Initialization for authenticated varibale services.
+  If this initialization returns error status, other APIs will not work
+  and expect to be not called then.
+
+  @param[in]  AuthVarLibContextIn   Pointer to input auth variable lib context.
+  @param[out] AuthVarLibContextOut  Pointer to output auth variable lib context.
+
+  @retval EFI_SUCCESS               Function successfully executed.
+  @retval EFI_INVALID_PARAMETER     If AuthVarLibContextIn == NULL or AuthVarLibContextOut == NULL.
+  @retval EFI_OUT_OF_RESOURCES      Fail to allocate enough resource.
+  @retval EFI_UNSUPPORTED           Unsupported to process authenticated variable.
+
+**/
+EFI_STATUS
+EFIAPI
+AuthVariableLibInitialize (
+  IN  AUTH_VAR_LIB_CONTEXT_IN   *AuthVarLibContextIn,
+  OUT AUTH_VAR_LIB_CONTEXT_OUT  *AuthVarLibContextOut
+  )
+{
+  //
+  // Do nothing, just return EFI_UNSUPPORTED.
+  //
+  return EFI_UNSUPPORTED;
+}
+
+/**
+  Process variable with EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS set.
+
+  @param[in] VariableName           Name of the variable.
+  @param[in] VendorGuid             Variable vendor GUID.
+  @param[in] Data                   Data pointer.
+  @param[in] DataSize               Size of Data.
+  @param[in] Attributes             Attribute value of the variable.
+
+  @retval EFI_SUCCESS               The firmware has successfully stored the variable and its data as
+                                    defined by the Attributes.
+  @retval EFI_INVALID_PARAMETER     Invalid parameter.
+  @retval EFI_WRITE_PROTECTED       Variable is write-protected.
+  @retval EFI_OUT_OF_RESOURCES      There is not enough resource.
+  @retval EFI_SECURITY_VIOLATION    The variable is with EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACESS
+                                    set, but the AuthInfo does NOT pass the validation
+                                    check carried out by the firmware.
+  @retval EFI_UNSUPPORTED           Unsupported to process authenticated variable.
+
+**/
+EFI_STATUS
+EFIAPI
+AuthVariableLibProcessVariable (
+  IN CHAR16         *VariableName,
+  IN EFI_GUID       *VendorGuid,
+  IN VOID           *Data,
+  IN UINTN          DataSize,
+  IN UINT32         Attributes
+  )
+{
+  ASSERT (FALSE);
+  return EFI_UNSUPPORTED;
+}