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