PeiEmuSerialPortLib.c

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#include <PiPei.h>
#include <Library/SerialPortLib.h>
#include <Library/PeiServicesLib.h>
 
#include <Ppi/EmuThunk.h>
#include <Protocol/EmuThunk.h>
 
RETURN_STATUS
EFIAPI
SerialPortInitialize (
  VOID
  )
{
  return RETURN_SUCCESS;
}
 
UINTN
EFIAPI
SerialPortWrite (
  IN UINT8  *Buffer,
  IN UINTN  NumberOfBytes
  )
{
  EMU_THUNK_PPI       *ThunkPpi;
  EFI_STATUS          Status;
  EMU_THUNK_PROTOCOL  *Thunk;
 
  //
  // Locate EmuThunkPpi for retrieving standard output handle
  //
  Status = PeiServicesLocatePpi (
             &gEmuThunkPpiGuid,
             0,
             NULL,
             (VOID **)&ThunkPpi
             );
  if (!EFI_ERROR (Status)) {
    Thunk = (EMU_THUNK_PROTOCOL *)ThunkPpi->Thunk ();
    return Thunk->WriteStdErr (Buffer, NumberOfBytes);
  }
 
  return 0;
}
 
UINTN
EFIAPI
SerialPortRead (
  OUT UINT8  *Buffer,
  IN  UINTN  NumberOfBytes
  )
{
  return 0;
}
 
BOOLEAN
EFIAPI
SerialPortPoll (
  VOID
  )
{
  return FALSE;
}