C++ (Cpp) _Nios2_Set_ctlreg_mpubaseの例

コード例 #1

ファイル: nios2-mpu-reset.c プロジェクト: aniwang2013/leon-rtems

void _Nios2_MPU_Reset( const Nios2_MPU_Configuration *config )
{
  uint32_t data_mpubase = (1U << config->data_region_size_log2)
    | NIOS2_MPUBASE_D;
  uint32_t inst_mpubase = 1U << config->instruction_region_size_log2;
  uint32_t mpuacc = NIOS2_MPUACC_WR;
  int data_count = config->data_region_count;
  int inst_count = config->instruction_region_count;
  int i = 0;

  _Nios2_MPU_Disable();

  for ( i = 0; i < data_count; ++i ) {
    uint32_t index = ((uint32_t) i) << NIOS2_MPUBASE_INDEX_OFFSET;

    _Nios2_Set_ctlreg_mpubase( data_mpubase | index );
    _Nios2_Set_ctlreg_mpuacc( mpuacc );
  }

  for ( i = 0; i < inst_count; ++i ) {
    uint32_t index = ((uint32_t) i) << NIOS2_MPUBASE_INDEX_OFFSET;

    _Nios2_Set_ctlreg_mpubase( inst_mpubase | index );
    _Nios2_Set_ctlreg_mpuacc( mpuacc );
  }
}

コード例 #2

ファイル: nios2-mpu-add-region.c プロジェクト: AlexShiLucky/rtems

bool _Nios2_MPU_Add_region(
  const Nios2_MPU_Configuration *config,
  const Nios2_MPU_Region_descriptor *desc,
  bool force
)
{
  bool ok = true;
  int index = desc->index;
  bool data = desc->data;
  uint32_t mpubase = 0;
  uint32_t mpuacc = 0;

  if ( _Nios2_MPU_Is_valid_index( config, index, data ) ) {
    if ( !force ) {
      _Nios2_MPU_Get_region_registers( index, data, &mpubase, &mpuacc );
      ok = _Nios2_MPU_Is_region_disabled( config, mpubase, mpuacc );
    }

    if ( ok ) {
      ok = _Nios2_MPU_Setup_region_registers(
        config,
        desc,
        &mpubase,
        &mpuacc
      );
      if ( ok ) {
        _Nios2_Set_ctlreg_mpubase(mpubase);
        _Nios2_Set_ctlreg_mpuacc(mpuacc);
      }
    }
  } else {
    ok = false;
  }

  return ok;
}