7a56650e2e
This change added a new instance of Tpm2DeviceLibDTpm to support drivers of type MM_STANDALONE. It abstracts dynamic Pcd access into separate file for different instances to avoid dynamic usage for StandaloneMm modules. Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Qi Zhang <qi1.zhang@intel.com> Cc: Rahul Kumar <rahul1.kumar@intel.com> Signed-off-by: Kun Qin <kun.q@outlook.com> Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
/** @file
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This file abstract internal interfaces of which implementation differs per library instance.
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Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved. <BR>
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Copyright (c) Microsoft Corporation.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Library/Tpm2DeviceLib.h>
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#include "Tpm2DeviceLibDTpm.h"
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TPM2_PTP_INTERFACE_TYPE mActiveTpmInterfaceType;
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UINT8 mCRBIdleByPass;
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/**
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Return cached PTP CRB interface IdleByPass state.
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@return Cached PTP CRB interface IdleByPass state.
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**/
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UINT8
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GetCachedIdleByPass (
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VOID
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)
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{
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return mCRBIdleByPass;
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}
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/**
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Return cached PTP interface type.
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@return Cached PTP interface type.
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**/
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TPM2_PTP_INTERFACE_TYPE
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GetCachedPtpInterface (
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VOID
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)
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{
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return mActiveTpmInterfaceType;
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}
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/**
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The common function cache current active TpmInterfaceType when needed.
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@retval EFI_SUCCESS DTPM2.0 instance is registered, or system does not support register DTPM2.0 instance
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**/
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EFI_STATUS
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InternalTpm2DeviceLibDTpmCommonConstructor (
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VOID
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)
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{
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mActiveTpmInterfaceType = 0xFF;
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mCRBIdleByPass = 0xFF;
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//
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// Always cache current active TpmInterfaceType for StandaloneMm implementation
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//
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mActiveTpmInterfaceType = Tpm2GetPtpInterface ((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));
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if (mActiveTpmInterfaceType == Tpm2PtpInterfaceCrb) {
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mCRBIdleByPass = Tpm2GetIdleByPass((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));
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}
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return EFI_SUCCESS;
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}
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