/** @file | |
This library is TPM2 DTPM instance. | |
It can be registered to Tpm2 Device router, to be active TPM2 engine, | |
based on platform setting. | |
Copyright (c) 2013 - 2016, Intel Corporation. All rights reserved. <BR> | |
This program and the accompanying materials | |
are licensed and made available under the terms and conditions of the BSD License | |
which accompanies this distribution. The full text of the license may be found at | |
http://opensource.org/licenses/bsd-license.php | |
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
**/ | |
#include <Library/BaseLib.h> | |
#include <Library/BaseMemoryLib.h> | |
#include <Library/DebugLib.h> | |
#include <Library/Tpm2DeviceLib.h> | |
#include <Guid/TpmInstance.h> | |
/** | |
Dump PTP register information. | |
@param[in] Register Pointer to PTP register. | |
**/ | |
VOID | |
DumpPtpInfo ( | |
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 | |
); | |
TPM2_DEVICE_INTERFACE mDTpm2InternalTpm2Device = { | |
TPM_DEVICE_INTERFACE_TPM20_DTPM, | |
DTpm2SubmitCommand, | |
DTpm2RequestUseTpm, | |
}; | |
/** | |
The function register DTPM2.0 instance. | |
@retval EFI_SUCCESS DTPM2.0 instance is registered, or system dose not surpport registr DTPM2.0 instance | |
**/ | |
EFI_STATUS | |
EFIAPI | |
Tpm2InstanceLibDTpmConstructor ( | |
VOID | |
) | |
{ | |
EFI_STATUS Status; | |
Status = Tpm2RegisterTpm2DeviceLib (&mDTpm2InternalTpm2Device); | |
if ((Status == EFI_SUCCESS) || (Status == EFI_UNSUPPORTED)) { | |
// | |
// Unsupported means platform policy does not need this instance enabled. | |
// | |
if (Status == EFI_SUCCESS) { | |
DumpPtpInfo ((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress)); | |
} | |
return EFI_SUCCESS; | |
} | |
return Status; | |
} |