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/*
* File : board.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.fayfayspace.org/license/LICENSE.
*
* Change Logs:
* Date Author Notes
* 2006-09-15 QiuYi the first version
* 2006-10-10 Bernard add hardware related of finsh
*/
#include <rtthread.h>
#include <rthw.h>
#include <bsp.h>
/**
* @addtogroup QEMU
*/
/*@{*/
static void rt_timer_handler(int vector)
{
rt_tick_increase();
}
#ifdef RT_USING_HOOK
static void idle_hook(void)
{
asm volatile("sti; hlt": : :"memory");
}
#endif
/**
* This function will init QEMU
*
*/
void rt_hw_board_init(void)
{
/* initialize 8253 clock to interrupt 1000 times/sec */
outb(TIMER_MODE, TIMER_SEL0|TIMER_RATEGEN|TIMER_16BIT);
outb(IO_TIMER1, TIMER_DIV(RT_TICK_PER_SECOND) % 256);
outb(IO_TIMER1, TIMER_DIV(RT_TICK_PER_SECOND) / 256);
/* install interrupt handler */
rt_hw_interrupt_install(INTTIMER0, rt_timer_handler, RT_NULL);
rt_hw_interrupt_umask(INTTIMER0);
#ifdef RT_USING_HOOK
rt_thread_idle_sethook(idle_hook);
#endif
}
void restart(void)
{
outb(KBSTATP, 0xFE); /* pulse reset low */
while(1);
}
#ifdef RT_USING_FINSH
#include <finsh.h>
FINSH_FUNCTION_EXPORT(restart, reboot PC)
void reboot(void)
{
restart();
}
FINSH_FUNCTION_EXPORT(reboot, reboot PC)
#endif
/*@}*/
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