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/** @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 - 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>
#include <Guid/TpmInstance.h>
#include "Tpm2DeviceLibDTpm.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 and 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
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) {
Status = InternalTpm2DeviceLibDTpmCommonConstructor ();
DumpPtpInfo ((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));
}
return EFI_SUCCESS;
}
return Status;
}
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