OvmfPkg: Apply uncrustify changes

[mirror_edk2.git] / OvmfPkg / Tcg / Tcg2Config / Tpm12Support.c

/** @file\r
  Implement the InternalTpm12Detect() function on top of the Tpm12DeviceLib\r
  class.\r
\r
  Copyright (C) 2020, Red Hat, Inc.\r
\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
**/\r
\r
#include <Library/BaseLib.h>\r
#include <Library/Tpm12DeviceLib.h>\r
\r
#include "Tpm12Support.h"\r
\r
#pragma pack (1)\r
typedef struct {\r
  TPM_RSP_COMMAND_HDR    Hdr;\r
  TPM_CURRENT_TICKS      CurrentTicks;\r
} TPM_RSP_GET_TICKS;\r
#pragma pack ()\r
\r
/**\r
  Probe for the TPM for 1.2 version, by sending TPM1.2 GetTicks\r
\r
  Sending a TPM1.2 command to a TPM2 should return a TPM1.2\r
  header (tag = 0xc4) and error code (TPM_BADTAG = 0x1e)\r
\r
  @retval EFI_SUCCESS  TPM version 1.2 probing successful.\r
\r
  @return              Error codes propagated from Tpm12SubmitCommand().\r
**/\r
STATIC\r
EFI_STATUS\r
TestTpm12 (\r
  )\r
{\r
  EFI_STATUS           Status;\r
  TPM_RQU_COMMAND_HDR  Command;\r
  TPM_RSP_GET_TICKS    Response;\r
  UINT32               Length;\r
\r
  Command.tag       = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
  Command.paramSize = SwapBytes32 (sizeof (Command));\r
  Command.ordinal   = SwapBytes32 (TPM_ORD_GetTicks);\r
\r
  Length = sizeof (Response);\r
  Status = Tpm12SubmitCommand (\r
             sizeof (Command),\r
             (UINT8 *)&Command,\r
             &Length,\r
             (UINT8 *)&Response\r
             );\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Detect the presence of a TPM with interface version 1.2.\r
\r
  @retval EFI_SUCCESS      TPM-1.2 available. The Tpm12RequestUseTpm() and\r
                           Tpm12SubmitCommand(TPM_ORD_GetTicks) operations\r
                           (from the Tpm12DeviceLib class) have succeeded.\r
\r
  @return                  Error codes propagated from Tpm12RequestUseTpm() and\r
                           Tpm12SubmitCommand().\r
**/\r
EFI_STATUS\r
InternalTpm12Detect (\r
  VOID\r
  )\r
{\r
  EFI_STATUS  Status;\r
\r
  Status = Tpm12RequestUseTpm ();\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  return TestTpm12 ();\r
}\r