MdePkg: add definitions for ACPI NVDIMM Device Path

[mirror_edk2.git] / SecurityPkg / Library / PeiTcg2PhysicalPresenceLib / PeiTcg2PhysicalPresenceLib.c

/** @file\r
  Get TPM 2.0 physical presence information.\r
\r
  This library will get TPM 2.0 physical presence information.\r
\r
Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>\r
SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include <PiPei.h>\r
\r
#include <Guid/Tcg2PhysicalPresenceData.h>\r
#include <Ppi/ReadOnlyVariable2.h>\r
\r
#include <Library/DebugLib.h>\r
#include <Library/PeiServicesLib.h>\r
#include <Library/PeiServicesTablePointerLib.h>\r
#include <Library/Tcg2PhysicalPresenceLib.h>\r
\r
/**\r
  Return TPM2 ManagementFlags set by PP interface.\r
\r
  @retval    ManagementFlags    TPM2 Management Flags.\r
**/\r
UINT32\r
EFIAPI\r
Tcg2PhysicalPresenceLibGetManagementFlags (\r
  VOID\r
  )\r
{\r
  EFI_STATUS                        Status;\r
  EFI_PEI_READ_ONLY_VARIABLE2_PPI   *VariablePpi;\r
  EFI_TCG2_PHYSICAL_PRESENCE_FLAGS  PpiFlags;\r
  UINTN                             DataSize;\r
\r
  Status = PeiServicesLocatePpi (&gEfiPeiReadOnlyVariable2PpiGuid, 0, NULL, (VOID **) &VariablePpi);\r
  ASSERT_EFI_ERROR (Status);\r
\r
  DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE_FLAGS);\r
  Status = VariablePpi->GetVariable (\r
                          VariablePpi,\r
                          TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE,\r
                          &gEfiTcg2PhysicalPresenceGuid,\r
                          NULL,\r
                          &DataSize,\r
                          &PpiFlags\r
                          );\r
  if (EFI_ERROR (Status)) {\r
    PpiFlags.PPFlags = TCG2_BIOS_TPM_MANAGEMENT_FLAG_DEFAULT | TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_DEFAULT;\r
  }\r
  return PpiFlags.PPFlags;\r
}\r