rt-thread-official/bsp/at91sam9260/startup.c

191 lines
4.0 KiB
C
Executable File

/*
* 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://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2011-01-13 weety first version
*/
#include <rthw.h>
#include <rtthread.h>
#include <at91sam926x.h>
#ifdef RT_USING_FINSH
#include <finsh.h>
#endif
#ifdef RT_USING_DEVICE
#include <serial.h>
#endif
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 mmu_invalidate_icache();
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 void rt_application_init(void);
extern struct serial_device uart0;
extern struct rt_device uart0_device;
/**
* @addtogroup at91sam9260
*/
/*@{*/
#if defined(__CC_ARM)
extern int Image$$ER_ZI$$ZI$$Base;
extern int Image$$ER_ZI$$ZI$$Length;
extern int Image$$ER_ZI$$ZI$$Limit;
#elif (defined (__GNUC__))
rt_uint8_t _irq_stack_start[1024];
rt_uint8_t _fiq_stack_start[1024];
rt_uint8_t _undefined_stack_start[512];
rt_uint8_t _abort_stack_start[512];
rt_uint8_t _svc_stack_start[4096] SECTION(".nobss");
extern unsigned char __bss_start;
extern unsigned char __bss_end;
#endif
#ifdef RT_USING_FINSH
extern void finsh_system_init(void);
#endif
/**
* This function will startup RT-Thread RTOS.
*/
void rtthread_startup(void)
{
/* disable interrupt first */
rt_hw_interrupt_disable();
/* enable cpu cache */
rt_hw_cpu_icache_disable();
mmu_invalidate_icache();
rt_hw_cpu_icache_enable();
/* initialize hardware interrupt */
rt_hw_interrupt_init();
/* initialize board */
rt_hw_board_init();
/* show version */
rt_show_version();
/* initialize tick */
rt_system_tick_init();
/* initialize kernel object */
rt_system_object_init();
/* initialize timer system */
rt_system_timer_init();
/* initialize heap memory system */
#ifdef __CC_ARM
rt_system_heap_init((void*)&Image$$ER_ZI$$ZI$$Limit, (void*)0x24000000);
#else
rt_system_heap_init((void*)&__bss_end, (void*)0x23f00000);
#endif
#ifdef RT_USING_MODULE
/* initialize module system*/
rt_system_module_init();
#endif
/* initialize scheduler system */
rt_system_scheduler_init();
#ifdef RT_USING_DEVICE
#ifdef RT_USING_DBGU
/* register dbgu */
rt_hw_serial_register(&uart0_device, "uart0",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STREAM | RT_DEVICE_FLAG_INT_RX,
&uart0);
#endif
#ifdef RT_USING_UART0
/* register uart0 */
rt_hw_serial_register(&uart1_device, "uart1",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STREAM | RT_DEVICE_FLAG_INT_RX,
&uart1);
#endif
#ifdef RT_USING_UART1
/* register uart1 */
rt_hw_serial_register(&uart2_device, "uart2",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STREAM | RT_DEVICE_FLAG_INT_RX,
&uart2);
#endif
#ifdef RT_USING_UART2
/* register uart2 */
rt_hw_serial_register(&uart3_device, "uart3",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STREAM | RT_DEVICE_FLAG_INT_RX,
&uart3);
#endif
#ifdef RT_USING_UART3
/* register uart3 */
rt_hw_serial_register(&uart4_device, "uart4",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STREAM | RT_DEVICE_FLAG_INT_RX,
&uart4);
#endif
#ifdef RT_USING_DFS
//rt_hw_sdcard_init();
#endif
/*init all registed devices */
rt_device_init_all();
#endif
/* initialize application */
rt_application_init();
#ifdef RT_USING_FINSH
/* initialize finsh */
finsh_system_init();
#ifdef RT_USING_DEVICE
#ifdef RT_USING_DBGU
finsh_set_device("uart0");
#endif
#endif
#endif
/* initialize system timer thread */
rt_system_timer_thread_init();
/* initialize idle thread */
rt_thread_idle_init();
/* start scheduler */
rt_system_scheduler_start();
/* never reach here */
return ;
}
int main(void)
{
/* startup RT-Thread RTOS */
rtthread_startup();
return 0;
}
/*@}*/