rt-thread/bsp/x86/applications/startup.c

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/*
* File : startup.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2012, RT-Thread Develop Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.fayfayspace.org/license/LICENSE.
*
* Change Logs:
* Date Author Notes
* 2006-09-15 QiuYi the first version
* 2006-10-10 Bernard update to 0.2.2 version
*/
#include <rtthread.h>
#include <rthw.h>
#include "board.h"
extern void rt_hw_console_init(void);
extern void rt_hw_board_init(void);
extern int rt_application_init(void);
//extern void rt_hw_interrupt_init(void);
//extern void rt_system_timer_init(void);
//extern void rt_system_scheduler_init(void);
//extern void rt_thread_idle_init(void);
#ifdef RT_USING_FINSH
extern void finsh_system_init(void);
extern void finsh_set_device(const char *device);
#endif
extern unsigned char __bss_start[];
extern unsigned char __bss_end[];
/**
* @addtogroup QEMU
*/
/*@{*/
/* clear .bss */
void rt_hw_clear_bss(void)
{
unsigned char *dst;
dst = __bss_start;
while (dst < __bss_end)
*dst++ = 0;
}
/**
* This function will startup RT-Thread RTOS
*/
void rtthread_startup(void)
{
/* clear .bss */
rt_hw_clear_bss();
/* init hardware interrupt */
rt_hw_interrupt_init();
/* init the console */
rt_hw_console_init();
rt_console_set_device("console");
/* init board */
rt_hw_board_init();
rt_show_version();
/* init tick */
rt_system_tick_init();
/* init kernel object */
rt_system_object_init();
/* init timer system */
rt_system_timer_init();
/* init memory system */
#ifdef RT_USING_HEAP
/* RAM 16M */
rt_system_heap_init((void *)&__bss_end, (void *)(1024UL*1024*8));
#endif
/* init scheduler system */
rt_system_scheduler_init();
/* init application */
rt_application_init();
#ifdef RT_USING_FINSH
/* init finsh */
finsh_system_init();
finsh_set_device("console");
#endif
/* init idle thread */
rt_thread_idle_init();
/* start scheduler */
rt_system_scheduler_start();
/* never reach here */
return ;
}
/*@}*/