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 * 2011-01-13 weety first version
9 * 2015-05-02 ArdaFu Port from AT91SAM9260 BSP
10 */
11
12 #include <rtthread.h>
13 #include <rthw.h>
14 #include <timer0.h>
15 #include "board.h"
16 #include <mmu.h>
17 #include "interrupt.h"
18
19 extern void rt_hw_interrupt_init(void);
20 extern void rt_hw_clock_init(void);
21 extern void rt_hw_uart_init(void);
22
23 static struct mem_desc hw_mem_desc[] =
24 {
25 { 0x00000000, 0xFFFFFFFF, 0x00000000, RW_NCNB },/* None cached for 4G memory */
26 // visual start, visual end, phy start , props
27 { 0x00000000, 0x000FFFFF, 0x20000000, RW_CB }, /* ISR Vector table */
28 { 0x00200000, 0x00001FFF, 0x40000000, RW_CB }, /* 8K cached SRAM 0/1 */
29 { 0x20000000, 0x21FFFFFF, 0x20000000, RW_CB }, /* 32M cached SDRAM */
30 { 0x90000000, 0x90001FFF, 0x40000000, RW_NCNB },/* 4K SRAM0 + 4k SRAM1 */
31 { 0xA0000000, 0xA1FFFFFF, 0x20000000, RW_NCNB },/* 32M none-cached SDRAM */
32 };
33
34 /**
35 * This function will handle rtos timer
36 */
rt_systick_handler(int vector,void * param)37 static void rt_systick_handler(int vector, void *param)
38 {
39 uint32_t ir = inl(HW_TIMER0_IR);
40 if (ir & 1UL)
41 rt_tick_increase();
42 outl(ir, REG_SET(HW_TIMER0_IR));
43 }
44
45 /**
46 * This function will init pit for system ticks
47 */
rt_hw_timer_init()48 static void rt_hw_timer_init()
49 {
50 hw_timer0_init();
51 /* install interrupt handler */
52 rt_hw_interrupt_install(INT_TIMER0, rt_systick_handler, RT_NULL, "SysTick");
53 rt_hw_interrupt_umask(INT_TIMER0);
54
55 }
56
57 /**
58 * This function will init at91sam9260 board
59 */
rt_hw_board_init(void)60 void rt_hw_board_init(void)
61 {
62 /* initialize mmu */
63 rt_hw_mmu_init(hw_mem_desc, sizeof(hw_mem_desc)/sizeof(hw_mem_desc[0]));
64 /* initialize hardware interrupt */
65 rt_hw_interrupt_init();
66
67 /* initialize the system clock */
68 //rt_hw_clock_init(); //set each pll etc.
69
70 /* initialize uart */
71 rt_hw_uart_init();
72 rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
73
74 /* initialize timer0 */
75 rt_hw_timer_init();
76 }
77