rt-thread/bsp/risc-v/drivers/board.c

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2017-07-16 20:37:03 +08:00
#include <interrupt.h>
#include <rthw.h>
#if 0
static struct mem_desc hw_mem_desc[] =
{
{ 0x00000000, 0xFFFFFFFF, 0x00000000, RW_NCNB },/* None cached for 4G memory */
// visual start, visual end, phy start , props
{ 0x00000000, 0x000FFFFF, 0x20000000, RW_CB }, /* ISR Vector table */
{ 0x00200000, 0x00001FFF, 0x40000000, RW_CB }, /* 8K cached SRAM 0/1 */
{ 0x20000000, 0x21FFFFFF, 0x20000000, RW_CB }, /* 32M cached SDRAM */
{ 0x90000000, 0x90001FFF, 0x40000000, RW_NCNB },/* 4K SRAM0 + 4k SRAM1 */
{ 0xA0000000, 0xA1FFFFFF, 0x20000000, RW_NCNB },/* 32M none-cached SDRAM */
};
#endif
static void rt_systick_handler(int vector, void *param)
{
rt_tick_increase();
return;
}
static void rt_hw_timer_init(void)
{
return;
}
void rt_hw_board_init(void)
{
/* initialize mmu */
/* rt_hw_mmu_init(hw_mem_desc, sizeof(hw_mem_desc)/sizeof(hw_mem_desc[0]));*/
/* initialize hardware interrupt */
rt_hw_interrupt_init();
/* initialize the system clock */
//rt_hw_clock_init(); //set each pll etc.
/* initialize uart */
rt_hw_uart_init();
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
/* initialize timer0 */
rt_hw_timer_init();
#ifdef RT_USING_COMPONENTS_INIT
rt_components_board_init();
#endif
/* HW_ICOLL_CTRL_SET(BM_ICOLL_CTRL_IRQ_FINAL_ENABLE);*/
return;
}