Vlv2TbltDevicePkg/Library/Tpm2DeviceLibSeCDxe/Tpm2DeviceLibSeC.c

   1 /*++
   2
   3 Copyright (c)  1999  - 2015, Intel Corporation. All rights reserved
   4
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 --*/
   8
   9 #include <Uefi.h>
  10 #include <Protocol/PttPassThru.h>
  11 #include <Library/PcdLib.h>
  12 #include <Library/UefiBootServicesTableLib.h>
  13 //#include <Library/Tpm2DeviceLib.h>
  14
  15
  16 PTT_PASS_THRU_PROTOCOL *mPttPassThruProtocol;
  17
  18
  19 /**
  20   The constructor function caches the pointer to PEI services.
  21
  22   The constructor function caches the pointer to PEI services.
  23   It will always return EFI_SUCCESS.
  24
  25   @param  FfsHeader   Pointer to FFS header the loaded driver.
  26   @param  PeiServices Pointer to the PEI services.
  27
  28   @retval EFI_SUCCESS   The constructor always returns EFI_SUCCESS.
  29
  30 **/
  31
  32 EFI_STATUS
  33 EFIAPI
  34 Tpm2DeviceLibConstructor (
  35   VOID
  36   )
  37 {
  38   EFI_STATUS Status = EFI_SUCCESS;
  39
  40   Status = gBS->LocateProtocol (&gPttPassThruProtocolGuid, NULL, (VOID **) &mPttPassThruProtocol);
  41
  42   return Status;
  43 }
  44
  45 /**
  46   This service enables the sending of commands to the TPM2.
  47
  48   @param[in]  InputParameterBlockSize  Size of the TPM2 input parameter block.
  49   @param[in]  InputParameterBlock      Pointer to the TPM2 input parameter block.
  50   @param[in]  OutputParameterBlockSize Size of the TPM2 output parameter block.
  51   @param[in]  OutputParameterBlock     Pointer to the TPM2 output parameter block.
  52
  53   @retval EFI_SUCCESS            The command byte stream was successfully sent to the device and a response was successfully received.
  54   @retval EFI_DEVICE_ERROR       The command was not successfully sent to the device or a response was not successfully received from the device.
  55   @retval EFI_BUFFER_TOO_SMALL   The output parameter block is too small.
  56 **/
  57 EFI_STATUS
  58 EFIAPI
  59 Tpm2SubmitCommand (
  60   IN UINT32            InputParameterBlockSize,
  61   IN UINT8             *InputParameterBlock,
  62   IN OUT UINT32        *OutputParameterBlockSize,
  63   IN UINT8             *OutputParameterBlock
  64   )
  65 {
  66   EFI_STATUS Status;
  67
  68   Status = mPttPassThruProtocol->Tpm2SubmitCommand (
  69              mPttPassThruProtocol,
  70              InputParameterBlockSize,
  71              InputParameterBlock,
  72              OutputParameterBlockSize,
  73              OutputParameterBlock
  74            );
  75
  76   return Status;
  77 }
  78
  79 /**
  80   This service requests use TPM2.
  81
  82   @retval EFI_SUCCESS      Get the control of TPM2 chip.
  83   @retval EFI_NOT_FOUND    TPM2 not found.
  84   @retval EFI_DEVICE_ERROR Unexpected device behavior.
  85 **/
  86 EFI_STATUS
  87 EFIAPI
  88 Tpm2RequestUseTpm (
  89   VOID
  90   )
  91 {
  92   EFI_STATUS Status;
  93
  94   Status = mPttPassThruProtocol->Tpm2RequestUseTpm (mPttPassThruProtocol);
  95
  96   return Status;
  97 }
  98
  99 /**
 100   This service register TPM2 device.
 101
 102   @Param Tpm2Device  TPM2 device
 103
 104   @retval EFI_SUCCESS          This TPM2 device is registered successfully.
 105   @retval EFI_UNSUPPORTED      System does not support register this TPM2 device.
 106   @retval EFI_ALREADY_STARTED  System already register this TPM2 device.
 107 **/
 108 EFI_STATUS
 109 EFIAPI
 110 Tpm2RegisterTpm2DeviceLib (
 111   IN PTT_TPM2_DEVICE_INTERFACE   *Tpm2Device
 112   )
 113 {
 114   return EFI_UNSUPPORTED;
 115 }
 116
 117