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
126 lines
4.0 KiB
C
126 lines
4.0 KiB
C
/** @file
|
|
Ihis library is TPM2 TREE protocol lib.
|
|
|
|
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/UefiBootServicesTableLib.h>
|
|
#include <Library/Tpm2DeviceLib.h>
|
|
#include <Protocol/TrEEProtocol.h>
|
|
#include <IndustryStandard/Tpm20.h>
|
|
|
|
EFI_TREE_PROTOCOL *mTreeProtocol = NULL;
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
TPM2_RESPONSE_HEADER *Header;
|
|
|
|
if (mTreeProtocol == NULL) {
|
|
Status = gBS->LocateProtocol (&gEfiTrEEProtocolGuid, NULL, (VOID **) &mTreeProtocol);
|
|
if (EFI_ERROR (Status)) {
|
|
//
|
|
// TrEE protocol is not installed. So, TPM2 is not present.
|
|
//
|
|
DEBUG ((EFI_D_ERROR, "Tpm2SubmitCommand - TrEE - %r\n", Status));
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
}
|
|
//
|
|
// Assume when TrEE Protocol is ready, RequestUseTpm already done.
|
|
//
|
|
Status = mTreeProtocol->SubmitCommand (
|
|
mTreeProtocol,
|
|
InputParameterBlockSize,
|
|
InputParameterBlock,
|
|
*OutputParameterBlockSize,
|
|
OutputParameterBlock
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
Header = (TPM2_RESPONSE_HEADER *)OutputParameterBlock;
|
|
*OutputParameterBlockSize = SwapBytes32 (Header->paramSize);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
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;
|
|
|
|
if (mTreeProtocol == NULL) {
|
|
Status = gBS->LocateProtocol (&gEfiTrEEProtocolGuid, NULL, (VOID **) &mTreeProtocol);
|
|
if (EFI_ERROR (Status)) {
|
|
//
|
|
// TrEE protocol is not installed. So, TPM2 is not present.
|
|
//
|
|
DEBUG ((EFI_D_ERROR, "Tpm2RequestUseTpm - TrEE - %r\n", Status));
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
}
|
|
//
|
|
// Assume when TrEE Protocol is ready, RequestUseTpm already done.
|
|
//
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
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;
|
|
}
|