Vlv2TbltDevicePkg/Library/Tpm2DeviceLibSeCDxe/Tpm2DeviceLibSeC.c

   1 /*++
   2
   3 Copyright (c)  1999  - 2015, Intel Corporation. All rights reserved
   4
   5   This program and the accompanying materials are licensed and made available under
   6   the terms and conditions of the BSD License that accompanies this distribution.
   7   The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php.
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 --*/
  14
  15 #include <Uefi.h>
  16 #include <Protocol/PttPassThru.h>
  17 #include <Library/PcdLib.h>
  18 #include <Library/UefiBootServicesTableLib.h>
  19 //#include <Library/Tpm2DeviceLib.h>
  20
  21
  22 PTT_PASS_THRU_PROTOCOL *mPttPassThruProtocol;
  23
  24
  25 /**
  26   The constructor function caches the pointer to PEI services.
  27
  28   The constructor function caches the pointer to PEI services.
  29   It will always return EFI_SUCCESS.
  30
  31   @param  FfsHeader   Pointer to FFS header the loaded driver.
  32   @param  PeiServices Pointer to the PEI services.
  33
  34   @retval EFI_SUCCESS   The constructor always returns EFI_SUCCESS.
  35
  36 **/
  37
  38 EFI_STATUS
  39 EFIAPI
  40 Tpm2DeviceLibConstructor (
  41   VOID
  42   )
  43 {
  44   EFI_STATUS Status = EFI_SUCCESS;
  45
  46   Status = gBS->LocateProtocol (&gPttPassThruProtocolGuid, NULL, (VOID **) &mPttPassThruProtocol);
  47
  48   return Status;
  49 }
  50
  51 /**
  52   This service enables the sending of commands to the TPM2.
  53
  54   @param[in]  InputParameterBlockSize  Size of the TPM2 input parameter block.
  55   @param[in]  InputParameterBlock      Pointer to the TPM2 input parameter block.
  56   @param[in]  OutputParameterBlockSize Size of the TPM2 output parameter block.
  57   @param[in]  OutputParameterBlock     Pointer to the TPM2 output parameter block.
  58
  59   @retval EFI_SUCCESS            The command byte stream was successfully sent to the device and a response was successfully received.
  60   @retval EFI_DEVICE_ERROR       The command was not successfully sent to the device or a response was not successfully received from the device.
  61   @retval EFI_BUFFER_TOO_SMALL   The output parameter block is too small.
  62 **/
  63 EFI_STATUS
  64 EFIAPI
  65 Tpm2SubmitCommand (
  66   IN UINT32            InputParameterBlockSize,
  67   IN UINT8             *InputParameterBlock,
  68   IN OUT UINT32        *OutputParameterBlockSize,
  69   IN UINT8             *OutputParameterBlock
  70   )
  71 {
  72   EFI_STATUS Status;
  73
  74   Status = mPttPassThruProtocol->Tpm2SubmitCommand (
  75              mPttPassThruProtocol,
  76              InputParameterBlockSize,
  77              InputParameterBlock,
  78              OutputParameterBlockSize,
  79              OutputParameterBlock
  80            );
  81
  82   return Status;
  83 }
  84
  85 /**
  86   This service requests use TPM2.
  87
  88   @retval EFI_SUCCESS      Get the control of TPM2 chip.
  89   @retval EFI_NOT_FOUND    TPM2 not found.
  90   @retval EFI_DEVICE_ERROR Unexpected device behavior.
  91 **/
  92 EFI_STATUS
  93 EFIAPI
  94 Tpm2RequestUseTpm (
  95   VOID
  96   )
  97 {
  98   EFI_STATUS Status;
  99
 100   Status = mPttPassThruProtocol->Tpm2RequestUseTpm (mPttPassThruProtocol);
 101
 102   return Status;
 103 }
 104
 105 /**
 106   This service register TPM2 device.
 107
 108   @Param Tpm2Device  TPM2 device
 109
 110   @retval EFI_SUCCESS          This TPM2 device is registered successfully.
 111   @retval EFI_UNSUPPORTED      System does not support register this TPM2 device.
 112   @retval EFI_ALREADY_STARTED  System already register this TPM2 device.
 113 **/
 114 EFI_STATUS
 115 EFIAPI
 116 Tpm2RegisterTpm2DeviceLib (
 117   IN PTT_TPM2_DEVICE_INTERFACE   *Tpm2Device
 118   )
 119 {
 120   return EFI_UNSUPPORTED;
 121 }
 122
 123