1 /*
2  * Copyright (c) 2006-2021, RT-Thread Development Team
3  *
4  * SPDX-License-Identifier: Apache-2.0
5  *
6  * Change Logs:
7  * Date           Author       Notes
8  * 2006-08-31     Bernard      first implementation
9  */
10 
11 #include <rthw.h>
12 #include <rtthread.h>
13 
14 #include "board.h"
15 
16 #ifdef RT_USING_DFS
17 #include "sd.h"
18 #endif
19 
20 #ifdef RT_USING_LWIP
21 #include "sam7x_emac.h"
22 extern rt_err_t eth_system_device_init(void);
23 #endif
24 
25 #ifdef RT_USING_FINSH
26 #include <finsh.h>
27 extern int finsh_system_init(void);
28 #endif
29 
30 /**
31  * @addtogroup sam7x256
32  */
33 
34 /*@{*/
35 #ifdef __CC_ARM
36 extern int Image$$RW_IRAM1$$ZI$$Limit;
37 #endif
38 
39 #ifdef __GNUC__
40 extern unsigned char __bss_start;
41 extern unsigned char __bss_end;
42 #endif
43 
44 extern void rt_hw_interrupt_init(void);
45 extern int  rt_application_init(void);
46 #ifdef RT_USING_DEVICE
47 extern rt_err_t rt_hw_serial_init(void);
48 #endif
49 #ifdef RT_USING_FINSH
50 extern int finsh_system_init(void);
51 #endif
52 
led_flash()53 void led_flash()
54 {
55     int i;
56     static int j = 0;
57 
58     rt_hw_board_led_off(j);
59     for (i = 0; i < 2000000; i ++);
60 
61     j ++;
62     if (j >= 4) j = 0;
63 
64     rt_hw_board_led_on(j);
65     for (i = 0; i < 2000000; i ++);
66 }
67 
68 /**
69  * This function will startup RT-Thread RTOS.
70  */
rtthread_startup(void)71 void rtthread_startup(void)
72 {
73     /* init hardware interrupt */
74     rt_hw_interrupt_init();
75 
76     /* init board */
77     rt_hw_board_init();
78 
79     rt_show_version();
80 
81     /* init timer system */
82     rt_system_timer_init();
83 
84 #ifdef RT_USING_HEAP
85 #ifdef __CC_ARM
86     rt_system_heap_init((void*)&Image$$RW_IRAM1$$ZI$$Limit, (void*)0x00210000);
87 #elif __ICCARM__
88     rt_system_heap_init(__segment_end("HEAP"), (void*)0x00210000);
89 #else
90     rt_system_heap_init(&__bss_end, (void*)0x00210000);
91 #endif
92 #endif
93 
94     /* init scheduler system */
95     rt_system_scheduler_init();
96 
97 #ifdef RT_USING_HOOK /* if the hook is used */
98     /* set idle thread hook */
99     rt_thread_idle_sethook(led_flash);
100 #endif
101 
102 #ifdef RT_USING_DEVICE
103     /* init hardware serial device */
104     rt_hw_serial_init();
105 
106 #ifdef RT_USING_DFS
107     rt_hw_sdcard_init();
108 #endif
109 #endif
110 
111     /* init application */
112     rt_application_init();
113 
114 #ifdef RT_USING_FINSH
115     /* init finsh */
116     finsh_system_init();
117 #if !defined(RT_USING_POSIX_STDIO) && defined(RT_USING_DEVICE)
118     finsh_set_device("uart1");
119 #endif
120 #endif
121 
122     /* init idle thread */
123     rt_thread_idle_init();
124 
125     /* start scheduler */
126     rt_system_scheduler_start();
127 
128     /* never reach here */
129     return ;
130 }
131 
132 #ifdef __CC_ARM
main(void)133 int main (void)
134 {
135     /* invoke rtthread_startup */
136     rtthread_startup();
137 
138     return 0;
139 }
140 #endif
141 
142 /*@}*/
143