rt-thread-official/bsp/nios_ii/startup.c

/*
 * File      : startup.c
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2006-2021, RT-Thread Development Team
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rt-thread.org/license/LICENSE
 *
 * Change Logs:
 * Date           Author       Notes
 * 2011-02-14     aozima       first implementation for Nios II.
 * 2011-03-04     aozima       add HEAP and finsh support .
 */

#include <rtthread.h>
#include "system.h"
#include "board.h"

/**
 * @addtogroup NIOS_II
 */

/*@{*/

extern int rt_application_init(void);

#ifdef RT_USING_FINSH
extern int finsh_system_init(void);
extern void finsh_set_device(const char* device);
#endif

#ifdef RT_USING_HEAP
extern int _alt_partition_sdram_load_addr;
#endif

/**
 * This function will startup RT-Thread RTOS.
 */
void rtthread_startup(void)
{
    /* init board */
    rt_hw_board_init();

    /* show version */
    rt_show_version();

    /* init timer system */
    rt_system_timer_init();

#ifdef RT_USING_HEAP
    rt_system_heap_init( &_alt_partition_sdram_load_addr, (void*)(SDRAM_BASE + SDRAM_SPAN) );
#endif

    /* init scheduler system */
    rt_system_scheduler_init();

    /* init application */
    rt_application_init();

    /* init timer thread */
    rt_system_timer_thread_init();

#ifdef RT_USING_FINSH
    /* init finsh */
    finsh_system_init();
    finsh_set_device("uart");
#endif

    /* init idle thread */
    rt_thread_idle_init();

    /* start scheduler */
    rt_system_scheduler_start();

    /* never reach here */
    return ;
}

int main(void)
{
    /* disable interrupt first */
    rt_hw_interrupt_disable();

    /* startup RT-Thread RTOS */
    rtthread_startup();

    return 0;
}

/*@}*/