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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
*/
#include <interrupt.h>
#include <rthw.h>
#include <board.h>
#include <platform.h>
#include <encoding.h>
#include <interrupt.h>
extern void use_default_clocks(void);
extern void use_pll(int refsel, int bypass, int r, int f, int q);
#define TICK_COUNT (2 * RTC_FREQ / RT_TICK_PER_SECOND)
#define MTIME (*((volatile uint64_t *)(CLINT_CTRL_ADDR + CLINT_MTIME)))
#define MTIMECMP (*((volatile uint64_t *)(CLINT_CTRL_ADDR + CLINT_MTIMECMP)))
/* system tick interrupt */
void handle_m_time_interrupt()
{
MTIMECMP = MTIME + TICK_COUNT;
rt_tick_increase();
}
/* fixed misaligned bug for qemu */
void *__wrap_memset(void *s, int c, size_t n)
{
return rt_memset(s, c, n);
}
static void rt_hw_clock_init(void)
{
use_default_clocks();
use_pll(0, 0, 1, 31, 1);
}
static void rt_hw_timer_init(void)
{
MTIMECMP = MTIME + TICK_COUNT;
/* enable timer interrupt*/
set_csr(mie, MIP_MTIP);
}
void rt_hw_board_init(void)
{
/* initialize the system clock */
rt_hw_clock_init();
/* initialize hardware interrupt */
rt_hw_interrupt_init();
/* initialize timer0 */
rt_hw_timer_init();
#ifdef RT_USING_HEAP
rt_system_heap_init((void *)HEAP_BEGIN, (void *)HEAP_END);
#endif
#ifdef RT_USING_COMPONENTS_INIT
rt_components_board_init();
#endif
#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#endif
return;
}
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