1 files changed, 60 insertions, 0 deletions
diff --git a/SecurityPkg/Library/Tpm12CommandLib/Tpm12PhysicalPresence.c b/SecurityPkg/Library/Tpm12CommandLib/Tpm12PhysicalPresence.c
new file mode 100644
index 0000000000..a730334c3f
--- /dev/null
+++ b/SecurityPkg/Library/Tpm12CommandLib/Tpm12PhysicalPresence.c
@@ -0,0 +1,60 @@
+/** @file
+  Implement TPM1.2 Physical Presence related command.
+
+Copyright (c) 2016, Intel Corporation. All rights reserved. <BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution.  The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <PiPei.h>
+#include <Library/Tpm12CommandLib.h>
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/Tpm12DeviceLib.h>
+
+#pragma pack(1)
+
+typedef struct {
+  TPM_RQU_COMMAND_HDR   Hdr;
+  TPM_PHYSICAL_PRESENCE PhysicalPresence;
+} TPM_CMD_PHYSICAL_PRESENCE;
+
+#pragma pack()
+
+/**
+Send TSC_PhysicalPresence command to TPM.
+
+@param[in] PhysicalPresence   The state to set the TPMs Physical Presence flags.
+
+@retval EFI_SUCCESS           Operation completed successfully.
+@retval EFI_TIMEOUT           The register can't run into the expected status in time.
+@retval EFI_BUFFER_TOO_SMALL  Response data buffer is too small.
+@retval EFI_DEVICE_ERROR      Unexpected device behavior.
+
+**/
+EFI_STATUS
+EFIAPI
+Tpm12PhysicalPresence (
+  IN TPM_PHYSICAL_PRESENCE  PhysicalPresence
+  )
+{
+  TPM_CMD_PHYSICAL_PRESENCE  Command;
+  TPM_RSP_COMMAND_HDR        Response;
+  UINT32                     Length;
+
+  //
+  // send Tpm command TSC_ORD_PhysicalPresence
+  //
+  Command.Hdr.tag          = SwapBytes16 (TPM_TAG_RQU_COMMAND);
+  Command.Hdr.paramSize    = SwapBytes32 (sizeof (Command));
+  Command.Hdr.ordinal      = SwapBytes32 (TSC_ORD_PhysicalPresence);
+  Command.PhysicalPresence = SwapBytes16 (PhysicalPresence);
+  Length = sizeof (Response);
+  return Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);
+}