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/** @file
Get TPM 2.0 physical presence information.
This library will get TPM 2.0 physical presence information.
Copyright (c) 2015 - 2018, 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 = TCG2_BIOS_TPM_MANAGEMENT_FLAG_DEFAULT | TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_DEFAULT;
}
return PpiFlags.PPFlags;
}
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