145 lines
2.8 KiB
C
145 lines
2.8 KiB
C
/*
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* File : startup.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006-2013, RT-Thread Develop Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2008-12-11 xuxinming first version
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* 2010-4-3 LiJin add init soft timer thread
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* 2013-05-24 Grissiom port to RM48x50
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#ifdef RT_USING_FINSH
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#include <finsh.h>
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extern int finsh_system_init(void);
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#endif
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#include <board.h>
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/**
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* @addtogroup LPC2478
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*/
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/*@{*/
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extern int rt_application_init(void);
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#ifdef RT_USING_DEVICE
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extern rt_err_t rt_hw_serial_init(void);
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#endif
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#ifdef __CC_ARM
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extern int Image$$RW_IRAM1$$ZI$$Limit;
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#elif defined(__GNUC__)
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extern int __bss_end;
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#elif defined(__TI_COMPILER_VERSION__)
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extern unsigned char * const system_data_end;
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#endif
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#define MEMEND 0x08040000
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void rt_hw_pmu_enable_cnt(void)
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{
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unsigned long tmp;
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__asm (" MRC p15, #0, r0, c9, c12, #0");
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__asm (" ORR r0, r0, #0x09\n");
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__asm (" MCR p15, #0, r0, c9, c12, #0\n");
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__asm (" MOV r0, #1\n");
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__asm (" RBIT r0, r0\n");
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__asm (" MCR p15, #0, r0, c9, c12, #1\n");
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}
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void rt_hw_pmu_setcnt(unsigned long val)
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{
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__asm (" MCR p15, #0, r0, c9, c13, #0");
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}
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unsigned long rt_hw_pmu_getcnt(void)
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{
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__asm (" MRC p15, #0, r0, c9, c13, #0");
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}
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/**
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* This function will startup RT-Thread RTOS.
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*/
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void rtthread_startup(void)
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{
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/*// RM48 does not have cache implemented
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*rt_hw_cpu_icache_enable();
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*rt_hw_cpu_dcache_enable();
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*/
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/* init hardware interrupt */
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rt_hw_interrupt_init();
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/* init board */
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rt_hw_board_init();
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/* init tick */
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rt_system_tick_init();
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/* init kernel object */
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rt_system_object_init();
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rt_show_version();
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/* init timer system */
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rt_system_timer_init();
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/* init memory system */
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#ifdef RT_USING_HEAP
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#ifdef __CC_ARM
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rt_system_heap_init((void*)&Image$$RW_IRAM1$$ZI$$Limit, (void*)MEMEND);
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#elif defined(__GNUC__)
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rt_system_heap_init((void*)&__bss_end, (void*)MEMEND);
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#elif defined(__TI_COMPILER_VERSION__)
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rt_system_heap_init((void*)&system_data_end, (void*)MEMEND);
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#else
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#error Unkown compiler
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#endif
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#endif
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/* init scheduler system */
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rt_system_scheduler_init();
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/* init application */
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rt_application_init();
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#ifdef RT_USING_FINSH
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/* init finsh */
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finsh_system_init();
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finsh_set_device("sci2");
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#endif
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/* init soft timer thread */
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rt_system_timer_thread_init();
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/* init idle thread */
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rt_thread_idle_init();
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/* start scheduler */
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rt_system_scheduler_start();
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/* never reach here */
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return ;
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}
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int main(void)
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{
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/* disable interrupt first */
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rt_hw_interrupt_disable();
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/* invoke rtthread_startup */
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rtthread_startup();
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return 0;
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}
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/*@}*/
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