Tpm2DeviceLibDTpmBase.c

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#include <Library/Tpm2DeviceLib.h>
#include <Library/PcdLib.h>
 
#include "Tpm2DeviceLibDTpm.h"
 
UINT8
GetCachedIdleByPass (
  VOID
  )
{
  return PcdGet8 (PcdCRBIdleByPass);
}
 
TPM2_PTP_INTERFACE_TYPE
GetCachedPtpInterface (
  VOID
  )
{
  return PcdGet8 (PcdActiveTpmInterfaceType);
}
 
EFI_STATUS
InternalTpm2DeviceLibDTpmCommonConstructor (
  VOID
  )
{
  TPM2_PTP_INTERFACE_TYPE  PtpInterface;
  UINT8                    IdleByPass;
 
  //
  // Cache current active TpmInterfaceType only when needed
  //
  if (PcdGet8 (PcdActiveTpmInterfaceType) == 0xFF) {
    PtpInterface = Tpm2GetPtpInterface ((VOID *)(UINTN)PcdGet64 (PcdTpmBaseAddress));
    PcdSet8S (PcdActiveTpmInterfaceType, PtpInterface);
  }
 
  if ((PcdGet8 (PcdActiveTpmInterfaceType) == Tpm2PtpInterfaceCrb) && (PcdGet8 (PcdCRBIdleByPass) == 0xFF)) {
    IdleByPass = Tpm2GetIdleByPass ((VOID *)(UINTN)PcdGet64 (PcdTpmBaseAddress));
    PcdSet8S (PcdCRBIdleByPass, IdleByPass);
  }
 
  return EFI_SUCCESS;
}