163 lines
3.5 KiB
C
163 lines
3.5 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 - 2009 RT-Thread Develop 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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* 2006-03-24 Bernard first implementation
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* 2006-05-05 Bernard add DATA_COUNT definition
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* 2006-10-05 Alsor.Z for s3c2410x porting
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* 2007-11-20 Yi.Qiu add lcd,touch,console
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*/
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#include <rtthread.h>
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#include <rthw.h>
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#include "board.h"
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#include "led.h"
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/**
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* @addtogroup mini2440
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*/
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/*@{*/
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extern rt_uint32_t PCLK, FCLK, HCLK, UCLK;
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extern rt_uint8_t asc16_font[];
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extern rt_uint16_t _rt_hw_framebuffer[];
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extern void rt_hw_clock_init(void);
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extern void rt_hw_lcd_init(void);
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extern void rt_hw_mmu_init(void);
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extern void rt_hw_touch_init(void);
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extern void rt_kbd_init(void);
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extern void rt_console_init(rt_uint8_t*, rt_uint8_t*, rt_uint8_t);
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extern void rt_hw_get_clock(void);
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extern void rt_hw_set_dividor(rt_uint8_t hdivn, rt_uint8_t pdivn);
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extern void rt_hw_set_clock(rt_uint8_t sdiv, rt_uint8_t pdiv, rt_uint8_t mdiv);
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#define UART0 ((struct uartport *)U0BASE)
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struct serial_int_rx uart0_int_rx;
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struct serial_device uart0 =
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{
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UART0,
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&uart0_int_rx,
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RT_NULL
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};
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struct rt_device uart0_device;
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/**
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* This function will handle rtos timer
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*/
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void rt_timer_handler(int vector)
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{
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rt_tick_increase();
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}
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/**
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* This function will handle serial
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*/
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void rt_serial_handler(int vector)
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{
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INTSUBMSK |= (BIT_SUB_RXD0);
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rt_hw_serial_isr(&uart0_device);
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SUBSRCPND |= BIT_SUB_RXD0;
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/* Unmask sub interrupt (RXD0) */
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INTSUBMSK &=~(BIT_SUB_RXD0);
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}
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/**
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* This function will handle init uart
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*/
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void rt_hw_uart_init(void)
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{
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int i;
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/* UART0 port configure */
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GPHCON |= 0xAA;
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/* PULLUP is disable */
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GPHUP |= 0xF;
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/* FIFO enable, Tx/Rx FIFO clear */
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uart0.uart_device->ufcon = 0x0;
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/* disable the flow control */
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uart0.uart_device->umcon = 0x0;
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/* Normal,No parity,1 stop,8 bit */
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uart0.uart_device->ulcon = 0x3;
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/*
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* tx=level,rx=edge,disable timeout int.,enable rx error int.,
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* normal,interrupt or polling
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*/
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uart0.uart_device->ucon = 0x245;
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/* Set uart0 bps */
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uart0.uart_device->ubrd = (rt_int32_t)(PCLK / (BPS * 16)) - 1;
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/* output PCLK to UART0/1, PWMTIMER */
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CLKCON |= 0x0D00;
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for (i = 0; i < 100; i++);
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/* install uart isr */
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INTSUBMSK &= ~(BIT_SUB_RXD0);
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rt_hw_interrupt_install(INTUART0, rt_serial_handler, RT_NULL);
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rt_hw_interrupt_umask(INTUART0);
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}
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/**
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* This function will init timer4 for system ticks
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*/
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void rt_hw_timer_init()
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{
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/* timer4, pre = 15+1 */
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TCFG0 &= 0xffff00ff;
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TCFG0 |= 15 << 8;
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/* all are interrupt mode,set Timer 4 MUX 1/4 */
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TCFG1 &= 0xfff0ffff;
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TCFG1 |= 0x00010000;
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TCNTB4 = (rt_int32_t)(PCLK / (4 *16* RT_TICK_PER_SECOND)) - 1;
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/* manual update */
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TCON = TCON & (~(0x0f<<20)) | (0x02<<20);
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/* install interrupt handler */
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rt_hw_interrupt_install(INTTIMER4, rt_timer_handler, RT_NULL);
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rt_hw_interrupt_umask(INTTIMER4);
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/* start timer4, reload */
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TCON = TCON & (~(0x0f<<20)) | (0x05<<20);
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}
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/**
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* This function will init s3ceb2410 board
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*/
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void rt_hw_board_init()
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{
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/* initialize the system clock */
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rt_hw_clock_init();
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/* Get the clock */
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rt_hw_get_clock();
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/* initialize led port */
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rt_hw_led_init();
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/* initialize uart */
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rt_hw_uart_init();
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/* initialize mmu */
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rt_hw_mmu_init();
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/* initialize timer4 */
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rt_hw_timer_init();
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}
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/*@}*/
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