91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
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/*
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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 - 2009 RT-Thread Develop Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2011-01-13 weety first version
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* 2015-05-02 ArdaFu Port from AT91SAM9260 BSP
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*/
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#include <rtthread.h>
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#include <rthw.h>
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#include <timer0.h>
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#include "board.h"
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#include <mmu.h>
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#include "interrupt.h"
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extern void rt_hw_interrupt_init(void);
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extern void rt_hw_clock_init(void);
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extern void rt_hw_uart_init(void);
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static struct mem_desc hw_mem_desc[] =
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{
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{ 0x00000000, 0xFFFFFFFF, 0x00000000, RW_NCNB },/* None cached for 4G memory */
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// visual start, visual end, phy start , props
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{ 0x00000000, 0x000FFFFF, 0x20000000, RW_CB }, /* ISR Vector table */
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{ 0x00200000, 0x00001FFF, 0x40000000, RW_CB }, /* 8K cached SRAM 0/1 */
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{ 0x20000000, 0x21FFFFFF, 0x20000000, RW_CB }, /* 32M cached SDRAM */
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{ 0x90000000, 0x90001FFF, 0x40000000, RW_NCNB },/* 4K SRAM0 + 4k SRAM1 */
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{ 0xA0000000, 0xA1FFFFFF, 0x20000000, RW_NCNB },/* 32M none-cached SDRAM */
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};
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/**
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* This function will handle rtos timer
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*/
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static void rt_systick_handler(int vector, void *param)
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{
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uint32_t ir = inl(HW_TIMER0_IR);
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if (ir & 1UL)
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rt_tick_increase();
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outl(ir, REG_SET(HW_TIMER0_IR));
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}
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/**
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* This function will init pit for system ticks
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*/
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static void rt_hw_timer_init()
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{
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hw_timer0_init();
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/* install interrupt handler */
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rt_hw_interrupt_install(INT_TIMER0, rt_systick_handler, RT_NULL, "SysTick");
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rt_hw_interrupt_umask(INT_TIMER0);
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}
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/**
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* This function will init at91sam9260 board
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*/
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void rt_hw_board_init(void)
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{
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/* initialize mmu */
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rt_hw_mmu_init(hw_mem_desc, sizeof(hw_mem_desc)/sizeof(hw_mem_desc[0]));
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/* initialize hardware interrupt */
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rt_hw_interrupt_init();
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/* initialize the system clock */
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//rt_hw_clock_init(); //set each pll etc.
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/* initialize uart */
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rt_hw_uart_init();
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rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
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/* initialize timer0 */
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rt_hw_timer_init();
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}
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