rt-thread-official/bsp/asm9260t/drivers/board.c

91 lines
2.7 KiB
C

/*
* File : board.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2009 RT-Thread Develop Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2011-01-13 weety first version
* 2015-05-02 ArdaFu Port from AT91SAM9260 BSP
*/
#include <rtthread.h>
#include <rthw.h>
#include <timer0.h>
#include "board.h"
#include <mmu.h>
#include "interrupt.h"
extern void rt_hw_interrupt_init(void);
extern void rt_hw_clock_init(void);
extern void rt_hw_uart_init(void);
static struct mem_desc hw_mem_desc[] =
{
{ 0x00000000, 0xFFFFFFFF, 0x00000000, RW_NCNB },/* None cached for 4G memory */
// visual start, visual end, phy start , props
{ 0x00000000, 0x000FFFFF, 0x20000000, RW_CB }, /* ISR Vector table */
{ 0x00200000, 0x00001FFF, 0x40000000, RW_CB }, /* 8K cached SRAM 0/1 */
{ 0x20000000, 0x21FFFFFF, 0x20000000, RW_CB }, /* 32M cached SDRAM */
{ 0x90000000, 0x90001FFF, 0x40000000, RW_NCNB },/* 4K SRAM0 + 4k SRAM1 */
{ 0xA0000000, 0xA1FFFFFF, 0x20000000, RW_NCNB },/* 32M none-cached SDRAM */
};
/**
* This function will handle rtos timer
*/
static void rt_systick_handler(int vector, void *param)
{
uint32_t ir = inl(HW_TIMER0_IR);
if (ir & 1UL)
rt_tick_increase();
outl(ir, REG_SET(HW_TIMER0_IR));
}
/**
* This function will init pit for system ticks
*/
static void rt_hw_timer_init()
{
hw_timer0_init();
/* install interrupt handler */
rt_hw_interrupt_install(INT_TIMER0, rt_systick_handler, RT_NULL, "SysTick");
rt_hw_interrupt_umask(INT_TIMER0);
}
/**
* This function will init at91sam9260 board
*/
void rt_hw_board_init(void)
{
/* initialize mmu */
rt_hw_mmu_init(hw_mem_desc, sizeof(hw_mem_desc)/sizeof(hw_mem_desc[0]));
/* initialize hardware interrupt */
rt_hw_interrupt_init();
/* initialize the system clock */
//rt_hw_clock_init(); //set each pll etc.
/* initialize uart */
rt_hw_uart_init();
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
/* initialize timer0 */
rt_hw_timer_init();
}