e92ddda2b5
Then Tcg2PhysicalPresenceLib can support TCG2 PP TPM2, storage management and vendor specific requests according to Physical Presence Interface Specification. Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Chao Zhang <chao.b.zhang@intel.com> Cc: Eric Dong <eric.dong@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Jiewen Yao <jiewen.yao@intel.com> Reviewed-by: Eric Dong <eric.dong@intel.com>
60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/** @file
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Get TPM 2.0 physical presence information.
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This library will get TPM 2.0 physical presence information.
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Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <PiPei.h>
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#include <Guid/Tcg2PhysicalPresenceData.h>
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#include <Ppi/ReadOnlyVariable2.h>
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#include <Library/DebugLib.h>
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#include <Library/PeiServicesLib.h>
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#include <Library/PeiServicesTablePointerLib.h>
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#include <Library/Tcg2PhysicalPresenceLib.h>
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/**
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Return TPM2 ManagementFlags set by PP interface.
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@retval ManagementFlags TPM2 Management Flags.
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**/
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UINT32
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EFIAPI
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Tcg2PhysicalPresenceLibGetManagementFlags (
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VOID
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)
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{
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EFI_STATUS Status;
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EFI_PEI_READ_ONLY_VARIABLE2_PPI *VariablePpi;
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EFI_TCG2_PHYSICAL_PRESENCE_FLAGS PpiFlags;
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UINTN DataSize;
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Status = PeiServicesLocatePpi (&gEfiPeiReadOnlyVariable2PpiGuid, 0, NULL, (VOID **) &VariablePpi);
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ASSERT_EFI_ERROR (Status);
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DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE_FLAGS);
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Status = VariablePpi->GetVariable (
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VariablePpi,
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TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE,
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&gEfiTcg2PhysicalPresenceGuid,
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NULL,
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&DataSize,
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&PpiFlags
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);
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if (EFI_ERROR (Status)) {
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PpiFlags.PPFlags = TCG2_BIOS_TPM_MANAGEMENT_FLAG_DEFAULT | TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_DEFAULT;
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}
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return PpiFlags.PPFlags;
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}
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