327 lines
7.4 KiB
C
327 lines
7.4 KiB
C
/*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2020-12-04 tyx first implementation
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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_USER_MAIN
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#ifndef RT_MAIN_THREAD_STACK_SIZE
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#define RT_MAIN_THREAD_STACK_SIZE 2048
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#endif
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#ifndef RT_MAIN_THREAD_PRIORITY
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#define RT_MAIN_THREAD_PRIORITY (RT_THREAD_PRIORITY_MAX / 3)
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#endif
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#endif
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#ifdef RT_USING_COMPONENTS_INIT
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/*
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* Components Initialization will initialize some driver and components as following
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* order:
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* rti_start --> 0
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* BOARD_EXPORT --> 1
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* rti_board_end --> 1.end
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*
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* DEVICE_EXPORT --> 2
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* COMPONENT_EXPORT --> 3
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* FS_EXPORT --> 4
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* ENV_EXPORT --> 5
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* APP_EXPORT --> 6
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*
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* rti_end --> 6.end
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*
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* These automatically initialization, the driver or component initial function must
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* be defined with:
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* INIT_BOARD_EXPORT(fn);
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* INIT_DEVICE_EXPORT(fn);
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* ...
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* INIT_APP_EXPORT(fn);
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* etc.
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*/
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#pragma section("rti_fn$a", read)
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const char __rti_fn_begin_name[] = "__rti_fn_start";
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__declspec(allocate("rti_fn$a")) const struct rt_init_desc __rti_fn_begin =
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{
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__rti_fn_begin_name,
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NULL
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};
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#pragma section("rti_fn$z", read)
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const char __rti_fn_end_name[] = "__rti_fn_end";
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__declspec(allocate("rti_fn$z")) const struct rt_init_desc __rti_fn_end =
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{
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__rti_fn_end_name,
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NULL
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};
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static int rti_start(void)
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{
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return 0;
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}
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INIT_EXPORT(rti_start, "0");
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static int rti_board_end(void)
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{
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return 0;
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}
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INIT_EXPORT(rti_board_end, "1_end");
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static int rti_end(void)
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{
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return 0;
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}
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INIT_EXPORT(rti_end, "6_end");
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/**
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* Find next init function
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*/
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static const struct rt_init_desc* rt_init_find_next(const char* lv,
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unsigned int* begin, unsigned int* end)
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{
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const struct rt_init_desc* ptr;
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const struct rt_init_desc* ret_ptr = RT_NULL;
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while (begin < end)
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{
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if (*begin != 0)
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{
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ptr = (const struct rt_init_desc*)begin;
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if (ret_ptr != RT_NULL)
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{
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if (rt_strcmp(lv, ptr->level) < 0 &&
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rt_strcmp(ret_ptr->level, ptr->level) > 0)
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{
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ret_ptr = ptr;
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}
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}
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else
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{
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if (rt_strcmp(lv, ptr->level) < 0)
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{
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ret_ptr = ptr;
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}
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}
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begin += (sizeof(struct rt_init_desc) / sizeof(unsigned int));
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}
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else
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{
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begin++;
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}
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}
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return ret_ptr;
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}
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/**
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* RT-Thread Components Initialization for board
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*/
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void rt_components_board_init(void)
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{
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const struct rt_init_desc* ptr;
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const char* lv_start = "0__rt_init_rti_start";
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const char* lv_end = "1_end__rt_init_rti_board_end";
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unsigned int* ptr_begin = (unsigned int*)&__rti_fn_begin;
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unsigned int* ptr_end = (unsigned int*)&__rti_fn_end;
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int result;
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ptr_begin += (sizeof(struct rt_init_desc) / sizeof(unsigned int));
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while (*ptr_begin == 0) ptr_begin++;
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do ptr_end--; while (*ptr_end == 0);
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while (1)
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{
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ptr = rt_init_find_next(lv_start, ptr_begin, ptr_end);
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if (ptr == RT_NULL ||
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rt_strcmp(ptr->level, lv_end) >= 0)
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{
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break;
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}
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if (ptr->fn)
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{
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#if RT_DEBUG_INIT
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rt_kprintf("initialize %s", ptr->fn_name);
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result = ptr->fn();
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rt_kprintf(":%d done\n", result);
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#else
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result = ptr->fn();
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#endif
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}
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lv_start = ptr->level;
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};
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}
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/**
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* RT-Thread Components Initialization
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*/
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void rt_components_init(void)
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{
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const struct rt_init_desc* ptr;
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const char* lv_start = "1_end__rt_init_rti_board_end";
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const char* lv_end = "6_end__rt_init_rti_end";
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unsigned int* ptr_begin = (unsigned int*)&__rti_fn_begin;
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unsigned int* ptr_end = (unsigned int*)&__rti_fn_end;
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int result;
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ptr_begin += (sizeof(struct rt_init_desc) / sizeof(unsigned int));
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while (*ptr_begin == 0) ptr_begin++;
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do ptr_end--; while (*ptr_end == 0);
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while (1)
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{
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ptr = rt_init_find_next(lv_start, ptr_begin, ptr_end);
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if (ptr == RT_NULL ||
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rt_strcmp(ptr->level, lv_end) >= 0)
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{
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break;
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}
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if (ptr->fn)
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{
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#if RT_DEBUG_INIT
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rt_kprintf("initialize %s", ptr->fn_name);
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result = ptr->fn();
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rt_kprintf(":%d done\n", result);
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#else
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result = ptr->fn();
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#endif
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}
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lv_start = ptr->level;
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};
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}
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#endif /* RT_USING_COMPONENTS_INIT */
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#ifdef RT_USING_USER_MAIN
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void rt_application_init(void);
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void rt_hw_board_init(void);
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int rtthread_startup(void);
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#if defined(__CC_ARM) || defined(__CLANG_ARM)
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extern int $Super$$main(void);
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/* re-define main function */
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int $Sub$$main(void)
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{
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rtthread_startup();
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return 0;
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}
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#elif defined(__ICCARM__)
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extern int main(void);
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/* __low_level_init will auto called by IAR cstartup */
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extern void __iar_data_init3(void);
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int __low_level_init(void)
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{
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// call IAR table copy function.
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__iar_data_init3();
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rtthread_startup();
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return 0;
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}
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#elif defined(__GNUC__)
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/* Add -eentry to arm-none-eabi-gcc argument */
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int entry(void)
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{
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rtthread_startup();
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return 0;
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}
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#endif
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#ifndef RT_USING_HEAP
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/* if there is not enable heap, we should use static thread and stack. */
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ALIGN(8)
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static rt_uint8_t main_stack[RT_MAIN_THREAD_STACK_SIZE];
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struct rt_thread main_thread;
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#endif
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/* the system main thread */
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void main_thread_entry(void *parameter)
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{
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extern int main(void);
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#ifdef RT_USING_COMPONENTS_INIT
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/* RT-Thread components initialization */
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rt_components_init();
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#endif
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#ifdef RT_USING_SMP
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rt_hw_secondary_cpu_up();
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#endif
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/* invoke system main function */
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#if defined(__CC_ARM) || defined(__CLANG_ARM)
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{
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extern int $Super$$main(void);
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$Super$$main(); /* for ARMCC. */
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}
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#elif defined(__ICCARM__) || defined(__GNUC__) || defined(__TASKING__) || defined(_MSC_VER)
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main();
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#endif
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}
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void rt_application_init(void)
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{
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rt_thread_t tid;
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#ifdef RT_USING_HEAP
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tid = rt_thread_create("main", main_thread_entry, RT_NULL,
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RT_MAIN_THREAD_STACK_SIZE, RT_MAIN_THREAD_PRIORITY, 20);
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RT_ASSERT(tid != RT_NULL);
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#else
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rt_err_t result;
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tid = &main_thread;
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result = rt_thread_init(tid, "main", main_thread_entry, RT_NULL,
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main_stack, sizeof(main_stack), RT_MAIN_THREAD_PRIORITY, 20);
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RT_ASSERT(result == RT_EOK);
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/* if not define RT_USING_HEAP, using to eliminate the warning */
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(void)result;
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#endif
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rt_thread_startup(tid);
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}
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int rtthread_startup(void)
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{
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rt_hw_interrupt_disable();
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/* board level initialization
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* NOTE: please initialize heap inside board initialization.
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*/
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rt_hw_board_init();
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/* show RT-Thread version */
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rt_show_version();
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/* timer system initialization */
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rt_system_timer_init();
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/* scheduler system initialization */
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rt_system_scheduler_init();
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#ifdef RT_USING_SIGNALS
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/* signal system initialization */
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rt_system_signal_init();
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#endif
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/* create init_thread */
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rt_application_init();
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/* timer thread initialization */
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rt_system_timer_thread_init();
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/* idle thread initialization */
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rt_thread_idle_init();
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#ifdef RT_USING_SMP
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rt_hw_spin_lock(&_cpus_lock);
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#endif /*RT_USING_SMP*/
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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 0;
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}
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#endif
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