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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
*/
#include <rthw.h>
#include <rtthread.h>
#include "board.h"
#include "drv_uart.h"
#include "cp15.h"
void rt_hw_timer_isr(int vector, void *parameter)
{
ARM_TIMER_IRQCLR = 0;
rt_tick_increase();
}
int rt_hw_timer_init(void)
{
/* timer_clock = apb_clock/(pre_divider + 1) */
ARM_TIMER_PREDIV = (250 - 1);
ARM_TIMER_RELOAD = 0;
ARM_TIMER_LOAD = 0;
ARM_TIMER_IRQCLR = 0;
ARM_TIMER_CTRL = 0;
ARM_TIMER_RELOAD = 10000;
ARM_TIMER_LOAD = 10000;
/* 23-bit counter, enable interrupt, enable timer */
ARM_TIMER_CTRL = (1 << 1) | (1 << 5) | (1 << 7);
rt_hw_interrupt_install(IRQ_ARM_TIMER, rt_hw_timer_isr, RT_NULL, "tick");
rt_hw_interrupt_umask(IRQ_ARM_TIMER);
return 0;
}
void vector_copy(void)
{
rt_memcpy((void*)0x0, (void*)0x8000, 64);
}
void rt_hw_board_init(void)
{
/* initialize hardware interrupt */
rt_hw_interrupt_init();
rt_hw_vector_init();
/* initialize uart */
rt_hw_uart_init();
#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
/* set console device */
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#endif
#ifdef RT_USING_HEAP
/* initialize memory system */
rt_kprintf("heap: 0x%08x - 0x%08x\n", RT_HW_HEAP_BEGIN, RT_HW_HEAP_END);
rt_system_heap_init(RT_HW_HEAP_BEGIN, RT_HW_HEAP_END);
#endif
/* initialize timer for os tick */
rt_hw_timer_init();
#ifdef RT_USING_COMPONENTS_INIT
rt_components_board_init();
#endif
}
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