1 /*
2  * Copyright (c) 2018, Synopsys, Inc.
3  *
4  * SPDX-License-Identifier: Apache-2.0
5  */
6 
7 #include <rthw.h>
8 #include <rtthread.h>
9 
10 #include <rt_board.h>
11 
12 #ifdef RT_USING_HEAP
13 #define rt_system_heap_size 1024*64
14 static rt_uint32_t rt_system_heap[rt_system_heap_size/4] = {0};
15 #endif
16 
17 extern int rt_application_init(void);
18 
rt_hw_interrupt_init(void)19 void rt_hw_interrupt_init(void)
20 {
21     /* rt-thread specific interrupt and exception init */
22 }
23 
24 /**
25  * This function will startup RT-Thread RTOS.
26  */
rtthread_startup(void)27 void rtthread_startup(void)
28 {
29 
30     /* initialize hardware interrupt */
31     rt_hw_interrupt_init();
32 
33     /* initialize board */
34     rt_hw_board_init();
35 
36     /* show RT-Thread version */
37     rt_show_version();
38 
39     /* initialize memory system */
40 #ifdef RT_USING_HEAP
41     rt_system_heap_init((void *)rt_system_heap, (void *)(rt_system_heap+rt_system_heap_size));
42 #endif
43 
44     /* initialize scheduler system */
45     rt_system_scheduler_init();
46 
47     /* initialize system timer */
48     rt_system_timer_init();
49 
50     /* initialize soft timer thread */
51     rt_system_timer_thread_init();
52 
53     /* initialize application */
54     rt_application_init();
55 
56     /* initialize idle thread */
57     rt_thread_idle_init();
58 
59     /* start scheduler */
60     rt_system_scheduler_start();
61 
62     /* never reach here */
63     return ;
64 }
65 
main(void)66 int main(void)
67 {
68     /* disable interrupt first */
69     rt_hw_interrupt_disable();
70 
71     /* invoke rtthread_startup */
72     rtthread_startup();
73 
74     return 0;
75 }
76 
77