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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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