Tpm12Ownership.c

Go to the documentation of this file.

 
#include <PiPei.h>
#include <Library/BaseMemoryLib.h>
#include <Library/BaseLib.h>
#include <Library/Tpm12DeviceLib.h>
 
EFI_STATUS
EFIAPI
Tpm12ForceClear (
  VOID
  )
{
  EFI_STATUS           Status;
  TPM_RQU_COMMAND_HDR  Command;
  TPM_RSP_COMMAND_HDR  Response;
  UINT32               Length;
 
  //
  // send Tpm command TPM_ORD_ForceClear
  //
  Command.tag       = SwapBytes16 (TPM_TAG_RQU_COMMAND);
  Command.paramSize = SwapBytes32 (sizeof (Command));
  Command.ordinal   = SwapBytes32 (TPM_ORD_ForceClear);
  Length            = sizeof (Response);
 
  Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);
  if (EFI_ERROR (Status)) {
    return Status;
  }
 
  switch (SwapBytes32 (Response.returnCode)) {
    case TPM_SUCCESS:
      return EFI_SUCCESS;
    default:
      return EFI_DEVICE_ERROR;
  }
}