?? startup.c
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/* * File : startup.c * This file is part of RT-Thread RTOS * COPYRIGHT (C) 2006, 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://openlab.rt-thread.com/license/LICENSE * * Change Logs: * Date Author Notes * 2006-02-26 Bernard first implementation * 2006-05-05 Bernard add two test thread * 2006-08-10 Bernard use rt_show_version to display version information * 2008-07-14 Bernard modify the heap memory init parameter */#include <rtthread.h>#include <rthw.h>#include <s3c2410.h>rt_uint8_t _irq_stack_start[1024];rt_uint8_t _fiq_stack_start[1024];rt_uint8_t _undefined_stack_start[512];rt_uint8_t _abort_stack_start[512];rt_uint8_t _svc_stack_start[1024] SECTION(".nobss");extern void rt_hw_interrupt_init(void);extern void rt_hw_board_init(void);extern void rt_serial_init(void);extern void rt_system_timer_init(void);extern void rt_system_scheduler_init(void);extern void rt_thread_idle_init(void);extern void rt_hw_cpu_icache_enable(void);extern void rt_show_version(void);extern void rt_system_heap_init(void*, void*);extern void rt_hw_finsh_init(void);extern int rtl8019_device_register(char*);/** * @addtogroup s3ceb2410 *//*@{*/#ifdef __CC_ARM extern rt_uint8_t* __bss_start; extern rt_uint8_t* __bss_end;#else extern rt_uint8_t __bss_start; extern rt_uint8_t __bss_end;#endif/* * 4 LEDs on S3CEB2410 : GPF4~GPF7 */void led_set(rt_uint32_t led){ GPFDAT = led;}/* led loop */void led_flash(void){ rt_uint32_t i; /* change the pin mux to enable the LED output */ GPFCON = 0x5500; led_set(1 << 4); for ( i = 0; i < 2000000; i++); led_set(1 << 5); for ( i = 0; i < 2000000; i++); led_set(1 << 6); for ( i = 0; i < 2000000; i++); led_set(1 << 17); for ( i = 0; i < 2000000; i++);}#ifdef RT_USING_FINSHextern void finsh_system_init(void);#endifextern rt_uint32_t rt_application_init(void);/** * This function will startup RT-Thread RTOS. */void rtthread_startup(void){ /* enable cpu cache */ rt_hw_cpu_icache_enable(); rt_hw_cpu_dcache_enable(); /* init hardware interrupt */ rt_hw_interrupt_init(); /* init board */ rt_hw_board_init(); /* init hardware serial */ rt_serial_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 heap memory system */#ifdef __CC_ARM rt_system_heap_init((void*)__bss_end, (void*)0x34000000);#else rt_system_heap_init(&__bss_end, (void*)0x34000000);#endif /* init scheduler system */ rt_system_scheduler_init(); /* set idle thread hook */ rt_thread_idle_sethook(led_flash);#ifdef RT_USING_DEVICE /*init device system*/ rt_system_device_init();#ifdef RT_USING_LWIP /* init ethernet task */ eth_system_device_init(); /* init rtl8019 device */ rtl8019_device_register("E0");#endif /*init all registed devices*/ rt_device_init_all();#endif /* init application */ rt_application_init();#ifdef RT_USING_FINSH /* init finsh */ rt_hw_finsh_init(); /* init finsh */ finsh_system_init();#endif /* init idle thread */ rt_thread_idle_init(); /* start scheduler */ rt_system_scheduler_start(); /* never reach here */ return ;}/*@}*/
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