/*++
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Copyright (c) 1999 - 2015, Intel Corporation. All rights reserved
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SPDX-License-Identifier: BSD-2-Clause-Patent
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--*/
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#include <Uefi.h>
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#include <Protocol/PttPassThru.h>
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#include <Library/PcdLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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//#include <Library/Tpm2DeviceLib.h>
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PTT_PASS_THRU_PROTOCOL *mPttPassThruProtocol;
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/**
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The constructor function caches the pointer to PEI services.
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The constructor function caches the pointer to PEI services.
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It will always return EFI_SUCCESS.
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@param FfsHeader Pointer to FFS header the loaded driver.
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@param PeiServices Pointer to the PEI services.
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@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
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**/
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EFI_STATUS
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EFIAPI
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Tpm2DeviceLibConstructor (
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VOID
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)
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{
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EFI_STATUS Status = EFI_SUCCESS;
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Status = gBS->LocateProtocol (&gPttPassThruProtocolGuid, NULL, (VOID **) &mPttPassThruProtocol);
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return Status;
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}
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/**
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This service enables the sending of commands to the TPM2.
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@param[in] InputParameterBlockSize Size of the TPM2 input parameter block.
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@param[in] InputParameterBlock Pointer to the TPM2 input parameter block.
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@param[in] OutputParameterBlockSize Size of the TPM2 output parameter block.
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@param[in] OutputParameterBlock Pointer to the TPM2 output parameter block.
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@retval EFI_SUCCESS The command byte stream was successfully sent to the device and a response was successfully received.
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@retval EFI_DEVICE_ERROR The command was not successfully sent to the device or a response was not successfully received from the device.
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@retval EFI_BUFFER_TOO_SMALL The output parameter block is too small.
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**/
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EFI_STATUS
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EFIAPI
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Tpm2SubmitCommand (
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IN UINT32 InputParameterBlockSize,
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IN UINT8 *InputParameterBlock,
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IN OUT UINT32 *OutputParameterBlockSize,
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IN UINT8 *OutputParameterBlock
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)
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{
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EFI_STATUS Status;
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Status = mPttPassThruProtocol->Tpm2SubmitCommand (
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mPttPassThruProtocol,
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InputParameterBlockSize,
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InputParameterBlock,
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OutputParameterBlockSize,
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OutputParameterBlock
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);
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return Status;
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}
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/**
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This service requests use TPM2.
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@retval EFI_SUCCESS Get the control of TPM2 chip.
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@retval EFI_NOT_FOUND TPM2 not found.
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@retval EFI_DEVICE_ERROR Unexpected device behavior.
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**/
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EFI_STATUS
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EFIAPI
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Tpm2RequestUseTpm (
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VOID
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)
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{
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EFI_STATUS Status;
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Status = mPttPassThruProtocol->Tpm2RequestUseTpm (mPttPassThruProtocol);
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return Status;
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}
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/**
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This service register TPM2 device.
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@Param Tpm2Device TPM2 device
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@retval EFI_SUCCESS This TPM2 device is registered successfully.
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@retval EFI_UNSUPPORTED System does not support register this TPM2 device.
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@retval EFI_ALREADY_STARTED System already register this TPM2 device.
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**/
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EFI_STATUS
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EFIAPI
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Tpm2RegisterTpm2DeviceLib (
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IN PTT_TPM2_DEVICE_INTERFACE *Tpm2Device
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)
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{
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return EFI_UNSUPPORTED;
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}
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