179 lines
3.8 KiB
C
179 lines
3.8 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, 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://openlab.rt-thread.com/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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/**
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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_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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static rt_uint32_t timer_load_val = 0;
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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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/* reset TDATA0 */
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TCNTB4 = timer_load_val;
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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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GPHCON |= 0xa0;
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/*PULLUP is enable */
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GPHUP |= 0x0c;
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/* FIFO enable, Tx/Rx FIFO clear */
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uart0.uart_device->ufcon = 0x1;
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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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/* 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 s3ceb2410 board
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*/
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void rt_hw_board_init()
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{
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/* FCLK = 304.8M */
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#define MDIV 68
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#define PDIV 1
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#define SDIV 1
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//rt_hw_set_clock(SDIV, PDIV, MDIV);
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/* HCLK = PCLK = FCLK */
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//rt_hw_set_dividor(0, 0);
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/* use PWM Timer 4 because it has no output */
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/* prescaler for Timer 4 is 16 */
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TCFG0 = 0x0f00;
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/* all divider = 1/2 */
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TCFG1 = 0x0;
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rt_hw_get_clock();
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if (timer_load_val == 0)
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{
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/*
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* for 10 ms clock period @ PCLK with 4 bit divider = 1/2
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* (default) and prescaler = 16. Should be 10390
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* @33.25MHz and 15625 @ 50 MHz
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*/
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timer_load_val = PCLK/(2 * 16 * 100);
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}
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/* load value for 10 ms timeout */
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TCNTB4 = timer_load_val;
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/* auto load, manual update of Timer 4 */
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TCON = (TCON & ~0x0700000) | 0x600000;
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/* auto load, start Timer 4 */
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TCON = (TCON & ~0x0700000) | 0x500000 | 0x3;
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/*Enable NAND, USBD, PWM TImer, UART0,1 and GPIO clock,*/
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CLKCON = 0xfffff0;
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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 console */
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//rt_console_init(&_rt_hw_framebuffer[0], &asc16_font[0], 2);
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#ifdef RT_USING_RTGUI
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rt_hw_touch_init();
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#endif
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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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/* stop timer */
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/* TCON = 0x0; */
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}
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/*@}*/
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