rt-thread-official/libcpu/sim/win32/startup.c

349 lines
7.9 KiB
C

/*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-12-04 tyx first implementation
*/
#include <rthw.h>
#include <rtthread.h>
#ifdef RT_USING_USER_MAIN
#ifndef RT_MAIN_THREAD_STACK_SIZE
#define RT_MAIN_THREAD_STACK_SIZE 2048
#endif
#ifndef RT_MAIN_THREAD_PRIORITY
#define RT_MAIN_THREAD_PRIORITY (RT_THREAD_PRIORITY_MAX / 3)
#endif
#endif
#ifdef RT_USING_COMPONENTS_INIT
/*
* Components Initialization will initialize some driver and components as following
* order:
* rti_start --> 0
* BOARD_EXPORT --> 1
* rti_board_end --> 1.end
*
* DEVICE_EXPORT --> 2
* COMPONENT_EXPORT --> 3
* FS_EXPORT --> 4
* ENV_EXPORT --> 5
* APP_EXPORT --> 6
*
* rti_end --> 6.end
*
* These automatically initialization, the driver or component initial function must
* be defined with:
* INIT_BOARD_EXPORT(fn);
* INIT_DEVICE_EXPORT(fn);
* ...
* INIT_APP_EXPORT(fn);
* etc.
*/
#pragma section("rti_fn$a", read)
const char __rti_fn_begin_name[] = "__rti_fn_start";
__declspec(allocate("rti_fn$a")) const struct rt_init_desc __rti_fn_begin =
{
__rti_fn_begin_name,
NULL
};
#pragma section("rti_fn$z", read)
const char __rti_fn_end_name[] = "__rti_fn_end";
__declspec(allocate("rti_fn$z")) const struct rt_init_desc __rti_fn_end =
{
__rti_fn_end_name,
NULL
};
static int rti_start(void)
{
return 0;
}
INIT_EXPORT(rti_start, "0");
static int rti_board_end(void)
{
return 0;
}
INIT_EXPORT(rti_board_end, "1.end");
static int rti_end(void)
{
return 0;
}
INIT_EXPORT(rti_end, "6.end");
struct rt_init_tag
{
const char *level;
init_fn_t fn;
#if RT_DEBUG_INIT
const char *fn_name;
#endif
};
static rt_size_t rt_init_num = 0;
static struct rt_init_tag rt_init_table[2048] = { 0 };
static rt_bool_t rt_init_flag = RT_FALSE;
static int rt_init_objects_sort(void)
{
rt_size_t index_i, index_j;
struct rt_init_tag init_temp = { 0 };
unsigned int *ptr_begin = (unsigned int *)&__rti_fn_begin;
unsigned int *ptr_end = (unsigned int *)&__rti_fn_end;
struct rt_init_tag *table = rt_init_table;
ptr_begin += (sizeof(struct rt_init_desc) / sizeof(unsigned int));
if (rt_init_flag)
return rt_init_num;
while (*ptr_begin == 0)
ptr_begin++;
do (ptr_end--);
while (*ptr_end == 0);
while (ptr_begin < ptr_end)
{
if (*ptr_begin != 0)
{
table->level = ((struct rt_init_desc *)ptr_begin)->level;
table->fn = ((struct rt_init_desc *)ptr_begin)->fn;
#if RT_DEBUG_INIT
table->fn_name = ((struct rt_init_desc *)ptr_begin)->fn_name;
#endif
ptr_begin += sizeof(struct rt_init_desc) / sizeof(unsigned int);
table++;
rt_init_num += 1;
}
else
{
ptr_begin++;
}
}
if (rt_init_num == 0) /* no need sort */
return rt_init_num;
/* bubble sort algorithms */
for (index_i = 0; index_i < (rt_init_num - 1); index_i++)
{
for (index_j = 0; index_j < ((rt_init_num - 1) - index_i); index_j++)
{
if (rt_strcmp(rt_init_table[index_j].level, rt_init_table[index_j + 1].level) > 0)
{
init_temp = rt_init_table[index_j];
rt_init_table[index_j] = rt_init_table[index_j + 1];
rt_init_table[index_j + 1] = init_temp;
}
}
}
rt_init_flag = RT_TRUE;
return rt_init_num;
}
/**
* RT-Thread Components Initialization for board
*/
void rt_components_board_init(void)
{
const char* lv_start = ".rti_fn.0";
const char* lv_end = ".rti_fn.1.end";
rt_size_t index_i;
int result;
rt_init_objects_sort();
for (index_i = 0; index_i < rt_init_num; index_i++)
{
if (rt_init_table[index_i].fn)
{
if (rt_strcmp(rt_init_table[index_i].level, lv_end) >= 0)
{
break;
}
#if RT_DEBUG_INIT
rt_kprintf("initialize %s", rt_init_table[index_i].fn_name);
result = rt_init_table[index_i].fn();
rt_kprintf(":%d done\n", result);
#else
result = rt_init_table[index_i].fn();
#endif
}
}
}
/**
* RT-Thread Components Initialization
*/
void rt_components_init(void)
{
const char* lv_start = ".rti_fn.1.end";
const char* lv_end = ".rti_fn.6.end";
int result;
rt_size_t index_i;
rt_init_objects_sort();
for (index_i = 0; index_i < rt_init_num; index_i++)
{
if (rt_init_table[index_i].fn)
{
if (rt_strcmp(rt_init_table[index_i].level, lv_start) <= 0)
{
continue;
}
if (rt_strcmp(rt_init_table[index_i].level, lv_end) >= 0)
{
break;
}
#if RT_DEBUG_INIT
rt_kprintf("initialize %s", rt_init_table[index_i].fn_name);
result = rt_init_table[index_i].fn();
rt_kprintf(":%d done\n", result);
#else
result = rt_init_table[index_i].fn();
#endif
}
}
}
#endif /* RT_USING_COMPONENTS_INIT */
#ifdef RT_USING_USER_MAIN
void rt_application_init(void);
void rt_hw_board_init(void);
int rtthread_startup(void);
#if defined(__ARMCC_VERSION)
extern int $Super$$main(void);
/* re-define main function */
int $Sub$$main(void)
{
rtthread_startup();
return 0;
}
#elif defined(__ICCARM__)
extern int main(void);
/* __low_level_init will auto called by IAR cstartup */
extern void __iar_data_init3(void);
int __low_level_init(void)
{
// call IAR table copy function.
__iar_data_init3();
rtthread_startup();
return 0;
}
#elif defined(__GNUC__)
/* Add -eentry to arm-none-eabi-gcc argument */
int entry(void)
{
rtthread_startup();
return 0;
}
#endif
#ifndef RT_USING_HEAP
/* if there is not enable heap, we should use static thread and stack. */
ALIGN(8)
static rt_uint8_t main_stack[RT_MAIN_THREAD_STACK_SIZE];
struct rt_thread main_thread;
#endif
/* the system main thread */
void main_thread_entry(void *parameter)
{
extern int main(void);
#ifdef RT_USING_COMPONENTS_INIT
/* RT-Thread components initialization */
rt_components_init();
#endif
#ifdef RT_USING_SMP
rt_hw_secondary_cpu_up();
#endif
/* invoke system main function */
#if defined(__ARMCC_VERSION)
{
extern int $Super$$main(void);
$Super$$main(); /* for ARMCC. */
}
#elif defined(__ICCARM__) || defined(__GNUC__) || defined(__TASKING__) || defined(_MSC_VER)
main();
#endif
}
void rt_application_init(void)
{
rt_thread_t tid;
#ifdef RT_USING_HEAP
tid = rt_thread_create("main", main_thread_entry, RT_NULL,
RT_MAIN_THREAD_STACK_SIZE, RT_MAIN_THREAD_PRIORITY, 20);
RT_ASSERT(tid != RT_NULL);
#else
rt_err_t result;
tid = &main_thread;
result = rt_thread_init(tid, "main", main_thread_entry, RT_NULL,
main_stack, sizeof(main_stack), RT_MAIN_THREAD_PRIORITY, 20);
RT_ASSERT(result == RT_EOK);
/* if not define RT_USING_HEAP, using to eliminate the warning */
(void)result;
#endif
rt_thread_startup(tid);
}
int rtthread_startup(void)
{
rt_hw_interrupt_disable();
/* board level initialization
* NOTE: please initialize heap inside board initialization.
*/
rt_hw_board_init();
/* show RT-Thread version */
rt_show_version();
/* timer system initialization */
rt_system_timer_init();
/* scheduler system initialization */
rt_system_scheduler_init();
#ifdef RT_USING_SIGNALS
/* signal system initialization */
rt_system_signal_init();
#endif
/* create init_thread */
rt_application_init();
/* timer thread initialization */
rt_system_timer_thread_init();
/* idle thread initialization */
rt_thread_idle_init();
#ifdef RT_USING_SMP
rt_hw_spin_lock(&_cpus_lock);
#endif /*RT_USING_SMP*/
/* start scheduler */
rt_system_scheduler_start();
/* never reach here */
return 0;
}
#endif