c1d932429e
signed off by: jiewen.yao@intel.com reviewed by: guo.dong@intel.com git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14687 6f19259b-4bc3-4df7-8a09-765794883524
86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
/** @file
|
|
Ihis 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, 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>
|
|
|
|
/**
|
|
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.
|
|
//
|
|
return EFI_SUCCESS;
|
|
}
|
|
return Status;
|
|
}
|