C++ (Cpp) _Nios2_MPU_Disable Exemples

Exemple #1

Fichier : nios2-mpu-reset.c Projet : 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 );
  }
}

Exemple #2

Fichier : nios2-mpu-disable-protected.c Projet : AlexShiLucky/rtems

uint32_t _Nios2_MPU_Disable_protected( void )
{
  ISR_Level level;
  uint32_t config;

  _ISR_Disable( level );
  config = _Nios2_MPU_Disable();
  _ISR_Enable( level );

  return config;
}