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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.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2010-06-25 Bernard first version
* 2011-08-08 lgnq modified for Loongson LS1B
* 2015-07-06 chinesebear modified for Loongson LS1C
*/
#include <rthw.h>
#include <rtthread.h>
#include "board.h"
#define A_K0BASE 0x80000000
/**
* @addtogroup Loongson LS1B
*/
/*@{*/
extern unsigned char __bss_end;
extern int rt_application_init(void);
extern void tlb_refill_exception(void);
extern void general_exception(void);
extern void irq_exception(void);
extern void rt_hw_cache_init(void);
extern void invalidate_writeback_dcache_all(void);
extern void invalidate_icache_all(void);
/**
* This function will startup RT-Thread RTOS.
*/
void rtthread_startup(void)
{
/* disable interrupt first */
rt_hw_interrupt_disable();
/* init cache */
rt_hw_cache_init();
/* init hardware interrupt */
rt_hw_interrupt_init();
/* copy vector */
rt_memcpy((void *)A_K0BASE, tlb_refill_exception, 0x80);
rt_memcpy((void *)(A_K0BASE + 0x180), general_exception, 0x80);
rt_memcpy((void *)(A_K0BASE + 0x200), irq_exception, 0x80);
invalidate_writeback_dcache_all();
invalidate_icache_all();
/* init board */
rt_hw_board_init();
/* show version */
rt_show_version();
#ifdef RT_USING_HEAP
rt_system_heap_init((void*)&__bss_end, (void*)RT_HW_HEAP_END);
#endif
/* init scheduler system */
rt_system_scheduler_init();
/* initialize timer */
rt_system_timer_init();
/* initialize timer thread */
rt_system_timer_thread_init();
/* init idle thread */
rt_thread_idle_init();
/* init application */
rt_application_init();
/* start scheduler */
rt_system_scheduler_start();
/* never reach here */
return;
}
/*@}*/
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