88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/*
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* File : board.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006-2011, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2011-02-14 aozima first implementation for Nios II.
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include <stdio.h>
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#include "system.h"
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#include "sys/alt_irq.h"
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#include "altera_avalon_timer_regs.h"
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#include "uart.h"
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extern int alt_irq_register (alt_u32 id,
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void* context,
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void (*alt_isr_func)(void* isr_context, alt_u32 id) );
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/**
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* @addtogroup NIOS_II
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*/
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/*@{*/
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/**
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* This is the timer interrupt service routine.
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*
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*/
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void rt_hw_timer_handler(void * context,unsigned long id)
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{
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void* base = (void*)TIMER_BASE;
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/* clear the interrupt */
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IOWR_ALTERA_AVALON_TIMER_STATUS (base, 0);
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/* enter interrupt */
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rt_interrupt_enter();
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rt_tick_increase();
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/* leave interrupt */
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rt_interrupt_leave();
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}
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void sysTick_config(void)
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{
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void* base = (void*)TIMER_BASE;
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IOWR_ALTERA_AVALON_TIMER_CONTROL (base,
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ALTERA_AVALON_TIMER_CONTROL_ITO_MSK |
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ALTERA_AVALON_TIMER_CONTROL_CONT_MSK |
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ALTERA_AVALON_TIMER_CONTROL_START_MSK);
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alt_irq_register (TIMER_IRQ, NULL, rt_hw_timer_handler);
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}
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static void rt_hw_show_info(void)
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{
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rt_kprintf("\r\n\r\n---------- board info ----------\r\n");
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rt_kprintf("ALT_DEVICE_FAMILY: %s\r\n",ALT_DEVICE_FAMILY);
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rt_kprintf("ALT_CPU_ARCHITECTURE: %s\r\n",ALT_CPU_ARCHITECTURE);
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rt_kprintf("ALT_CPU_CPU_FREQ: %uHz\r\n",ALT_CPU_CPU_FREQ);
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rt_kprintf("memory size: at 0x%08X 0x%08X byte\r\n",SDRAM_BASE,SDRAM_SPAN);
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}
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void rt_hw_board_init(void)
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{
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rt_hw_uart_init();
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rt_console_set_device("uart");
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rt_hw_show_info();
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sysTick_config();
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}
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/*@}*/
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