Function rtthread_startup

src/components.c:238–285

* @brief This function will call all levels of initialization functions to complete * the initialization of the system, and finally start the scheduler. * * @return Normally never returns. If 0 is returned, the scheduler failed. */

 * @return Normally never returns. If 0 is returned, the scheduler failed.
 */
int rtthread_startup(void)
{
#ifdef RT_USING_SMP
    rt_hw_spin_lock_init(&_cpus_lock);
#endif
    rt_hw_local_irq_disable();

    /* board level initialization
     * NOTE: please initialize heap inside board initialization.
     */
    rt_hw_board_init();

    /* show RT-Thread version */
    rt_show_version();

    /* timer system initialization */
    rt_system_timer_init();

    /* scheduler system initialization */
    rt_system_scheduler_init();

#ifdef RT_USING_SIGNALS
    /* signal system initialization */
    rt_system_signal_init();
#endif /* RT_USING_SIGNALS */

    /* create init_thread */
    rt_application_init();

    /* timer thread initialization */
    rt_system_timer_thread_init();

    /* idle thread initialization */
    rt_thread_idle_init();

    /* defunct thread initialization */
    rt_thread_defunct_init();

#ifdef RT_USING_SMP
    rt_hw_spin_lock(&_cpus_lock);
#endif /* RT_USING_SMP */

    /* start scheduler */
    rt_system_scheduler_start();

    /* never reach here */
    return 0;
}
#endif /* RT_USING_USER_MAIN */