123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165 |
- /** @file
- This library is TPM2 DTPM device lib.
- Choosing this library means platform uses and only uses DTPM device as TPM2 engine.
- Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved. <BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
- **/
- #include <Library/BaseLib.h>
- #include <Library/BaseMemoryLib.h>
- #include <Library/DebugLib.h>
- #include <Library/Tpm2DeviceLib.h>
- #include <Library/PcdLib.h>
- /**
- Return PTP interface type.
- @param[in] Register Pointer to PTP register.
- @return PTP interface type.
- **/
- TPM2_PTP_INTERFACE_TYPE
- Tpm2GetPtpInterface (
- IN VOID *Register
- );
- /**
- Return PTP CRB interface IdleByPass state.
- @param[in] Register Pointer to PTP register.
- @return PTP CRB interface IdleByPass state.
- **/
- UINT8
- Tpm2GetIdleByPass (
- IN VOID *Register
- );
- /**
- 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,out] 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
- DTpm2SubmitCommand (
- IN UINT32 InputParameterBlockSize,
- IN UINT8 *InputParameterBlock,
- IN OUT UINT32 *OutputParameterBlockSize,
- IN UINT8 *OutputParameterBlock
- );
- /**
- 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
- DTpm2RequestUseTpm (
- VOID
- );
- /**
- 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,out] 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
- )
- {
- return DTpm2SubmitCommand (
- InputParameterBlockSize,
- InputParameterBlock,
- OutputParameterBlockSize,
- OutputParameterBlock
- );
- }
- /**
- 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
- )
- {
- return DTpm2RequestUseTpm ();
- }
- /**
- 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 TPM2_DEVICE_INTERFACE *Tpm2Device
- )
- {
- return EFI_UNSUPPORTED;
- }
- /**
- The function caches current active TPM interface type.
- @retval EFI_SUCCESS DTPM2.0 instance is registered, or system does not support register DTPM2.0 instance
- **/
- EFI_STATUS
- EFIAPI
- Tpm2DeviceLibConstructor (
- VOID
- )
- {
- TPM2_PTP_INTERFACE_TYPE PtpInterface;
- UINT8 IdleByPass;
- //
- // Cache current active TpmInterfaceType only when needed
- //
- if (PcdGet8(PcdActiveTpmInterfaceType) == 0xFF) {
- PtpInterface = Tpm2GetPtpInterface ((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));
- PcdSet8S(PcdActiveTpmInterfaceType, PtpInterface);
- }
- if (PcdGet8(PcdActiveTpmInterfaceType) == Tpm2PtpInterfaceCrb && PcdGet8(PcdCRBIdleByPass) == 0xFF) {
- IdleByPass = Tpm2GetIdleByPass((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));
- PcdSet8S(PcdCRBIdleByPass, IdleByPass);
- }
- return EFI_SUCCESS;
- }
|