1 files changed, 53 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/PeiTcg2PhysicalPresenceLib/PeiTcg2PhysicalPresenceLib.c b/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/PeiTcg2PhysicalPresenceLib/PeiTcg2PhysicalPresenceLib.c
new file mode 100644
index 00000000..c5560bd8
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/SecurityPkg/Library/PeiTcg2PhysicalPresenceLib/PeiTcg2PhysicalPresenceLib.c
@@ -0,0 +1,53 @@
+/** @file
+  Get TPM 2.0 physical presence information.
+
+  This library will get TPM 2.0 physical presence information.
+
+Copyright (c) 2015 - 2020, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <PiPei.h>
+
+#include <Guid/Tcg2PhysicalPresenceData.h>
+#include <Ppi/ReadOnlyVariable2.h>
+
+#include <Library/DebugLib.h>
+#include <Library/PeiServicesLib.h>
+#include <Library/PeiServicesTablePointerLib.h>
+#include <Library/Tcg2PhysicalPresenceLib.h>
+
+/**
+  Return TPM2 ManagementFlags set by PP interface.
+
+  @retval    ManagementFlags    TPM2 Management Flags.
+**/
+UINT32
+EFIAPI
+Tcg2PhysicalPresenceLibGetManagementFlags (
+  VOID
+  )
+{
+  EFI_STATUS                        Status;
+  EFI_PEI_READ_ONLY_VARIABLE2_PPI   *VariablePpi;
+  EFI_TCG2_PHYSICAL_PRESENCE_FLAGS  PpiFlags;
+  UINTN                             DataSize;
+
+  Status = PeiServicesLocatePpi (&gEfiPeiReadOnlyVariable2PpiGuid, 0, NULL, (VOID **) &VariablePpi);
+  ASSERT_EFI_ERROR (Status);
+
+  DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE_FLAGS);
+  Status = VariablePpi->GetVariable (
+                          VariablePpi,
+                          TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE,
+                          &gEfiTcg2PhysicalPresenceGuid,
+                          NULL,
+                          &DataSize,
+                          &PpiFlags
+                          );
+  if (EFI_ERROR (Status)) {
+    PpiFlags.PPFlags = PcdGet32(PcdTcg2PhysicalPresenceFlags);
+  }
+  return PpiFlags.PPFlags;
+}