1 files changed, 49 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm12CommandLib/Tpm12Ownership.c b/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm12CommandLib/Tpm12Ownership.c
new file mode 100644
index 00000000..9959a9c0
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/Tpm12CommandLib/Tpm12Ownership.c
@@ -0,0 +1,49 @@
+/** @file
+  Implement TPM1.2 Ownership related command.
+
+Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved. <BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <PiPei.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/BaseLib.h>
+#include <Library/Tpm12DeviceLib.h>
+
+/**
+  Send ForceClear command to TPM1.2.
+
+  @retval EFI_SUCCESS      Operation completed successfully.
+  @retval EFI_DEVICE_ERROR Unexpected device behavior.
+**/
+EFI_STATUS
+EFIAPI
+Tpm12ForceClear (
+  VOID
+  )
+{
+  EFI_STATUS           Status;
+  TPM_RQU_COMMAND_HDR  Command;
+  TPM_RSP_COMMAND_HDR  Response;
+  UINT32               Length;
+
+  //
+  // send Tpm command TPM_ORD_ForceClear
+  //
+  Command.tag        = SwapBytes16 (TPM_TAG_RQU_COMMAND);
+  Command.paramSize  = SwapBytes32 (sizeof (Command));
+  Command.ordinal    = SwapBytes32 (TPM_ORD_ForceClear);
+  Length = sizeof (Response);
+
+  Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+  switch (SwapBytes32 (Response.returnCode)) {
+  case TPM_SUCCESS:
+    return EFI_SUCCESS;
+  default:
+    return EFI_DEVICE_ERROR;
+  }
+}