Vlv2TbltDevicePkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / Vlv2TbltDevicePkg / Library / Tpm2DeviceLibSeCPei / Tpm2DeviceLibSeC.c

/*++\r
\r
Copyright (c)  1999  - 2015, Intel Corporation. All rights reserved\r
                                                                                   \r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
                                                                                   \r
\r
--*/\r
\r
#include <Uefi.h>\r
#include <PiPei.h>\r
#include <Ppi/PttPassThruPpi.h>\r
#include <Library/BaseLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/IoLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/PeiServicesLib.h>\r
#include <Library/PcdLib.h>\r
\r
\r
\r
\r
\r
\r
PTT_PASS_THRU_PPI  *SecPttPassThruPpi = NULL;\r
\r
/**\r
  The constructor function caches the pointer to PEI services.\r
\r
  The constructor function caches the pointer to PEI services.\r
  It will always return EFI_SUCCESS.\r
\r
  @param  FfsHeader   Pointer to FFS header the loaded driver.\r
  @param  PeiServices Pointer to the PEI services.\r
\r
  @retval EFI_SUCCESS   The constructor always returns EFI_SUCCESS.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
Tpm2DeviceLibConstructor (\r
  VOID\r
  )\r
{\r
  EFI_STATUS  Status = EFI_SUCCESS;\r
  \r
  Status = PeiServicesLocatePpi (&gPttPassThruPpiGuid, 0, NULL, (VOID **) &SecPttPassThruPpi);\r
  if (EFI_ERROR (Status)) {\r
     // Locate the PPI failed\r
     SecPttPassThruPpi = NULL;\r
  }\r
  return Status;\r
}\r
\r
/**\r
  This service enables the sending of commands to the TPM2.\r
\r
  @param[in]  InputParameterBlockSize  Size of the TPM2 input parameter block.\r
  @param[in]  InputParameterBlock      Pointer to the TPM2 input parameter block.\r
  @param[in]  OutputParameterBlockSize Size of the TPM2 output parameter block.\r
  @param[in]  OutputParameterBlock     Pointer to the TPM2 output parameter block.\r
\r
  @retval EFI_SUCCESS            The command byte stream was successfully sent to the device and a response was successfully received.\r
  @retval EFI_DEVICE_ERROR       The command was not successfully sent to the device or a response was not successfully received from the device.\r
  @retval EFI_BUFFER_TOO_SMALL   The output parameter block is too small.\r
**/\r
EFI_STATUS\r
EFIAPI\r
Tpm2SubmitCommand (\r
  IN UINT32            InputParameterBlockSize,\r
  IN UINT8             *InputParameterBlock,\r
  IN OUT UINT32        *OutputParameterBlockSize,\r
  IN UINT8             *OutputParameterBlock\r
  )\r
{\r
  EFI_STATUS  Status = EFI_SUCCESS;\r
\r
  if(NULL == InputParameterBlock || NULL == OutputParameterBlock || 0 == InputParameterBlockSize) {\r
    DEBUG ((EFI_D_ERROR, "Buffer == NULL or InputParameterBlockSize == 0\n"));\r
    Status = EFI_INVALID_PARAMETER;\r
    return Status;\r
  }\r
\r
  if (NULL == SecPttPassThruPpi) {\r
    // Don't locate PPI by calling Tpm2DeviceLibConstructor() function??\r
    Status = EFI_DEVICE_ERROR;\r
    return Status;\r
  }\r
\r
  Status = SecPttPassThruPpi->Tpm2SubmitCommand (\r
             SecPttPassThruPpi, \r
             InputParameterBlockSize, \r
             InputParameterBlock, \r
             OutputParameterBlockSize, \r
             OutputParameterBlock\r
           );\r
  \r
  return Status;\r
}\r
\r
/**\r
  This service requests use TPM2.\r
\r
  @retval EFI_SUCCESS      Get the control of TPM2 chip.\r
  @retval EFI_NOT_FOUND    TPM2 not found.\r
  @retval EFI_DEVICE_ERROR Unexpected device behavior.\r
**/\r
EFI_STATUS\r
EFIAPI\r
Tpm2RequestUseTpm (\r
  VOID\r
  )\r
{\r
  EFI_STATUS  Status = EFI_SUCCESS;\r
\r
  if (NULL == SecPttPassThruPpi) {\r
    // Don't locate PPI by calling Tpm2DeviceLibConstructor() function??\r
    Status = EFI_DEVICE_ERROR;\r
    return Status;\r
  }\r
\r
  Status = SecPttPassThruPpi->Tpm2RequestUseTpm (SecPttPassThruPpi);\r
  \r
  return Status;\r
}\r
\r
/**\r
  This service register TPM2 device.\r
\r
  @Param Tpm2Device  TPM2 device\r
\r
  @retval EFI_SUCCESS          This TPM2 device is registered successfully.\r
  @retval EFI_UNSUPPORTED      System does not support register this TPM2 device.\r
  @retval EFI_ALREADY_STARTED  System already register this TPM2 device.\r
**/\r
EFI_STATUS\r
EFIAPI\r
Tpm2RegisterTpm2DeviceLib (\r
  IN PTT_TPM2_DEVICE_INTERFACE   *Tpm2Device\r
  )\r
{\r
  return EFI_UNSUPPORTED;\r
}\r
\r
\r