107 lines
2.7 KiB
C
107 lines
2.7 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2006-2021, RT-Thread Development Team
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: Apache-2.0
|
||
|
|
*
|
||
|
|
* Change Logs:
|
||
|
|
* Date Author Notes
|
||
|
|
* 2019-07-29 zdzn first version
|
||
|
|
* 2021-07-31 GuEe-GUI config the memory/io address map
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <rthw.h>
|
||
|
|
#include <rtthread.h>
|
||
|
|
|
||
|
|
#include "board.h"
|
||
|
|
#include <mmu.h>
|
||
|
|
#include "drv_uart.h"
|
||
|
|
|
||
|
|
void rt_hw_vector_init(void);
|
||
|
|
|
||
|
|
static uint64_t tickval = 0;
|
||
|
|
|
||
|
|
void rt_hw_timer_isr(int vector, void *parameter)
|
||
|
|
{
|
||
|
|
uint64_t cntvct_el0;
|
||
|
|
|
||
|
|
do
|
||
|
|
{
|
||
|
|
tickval += 0xF424;
|
||
|
|
__asm__ volatile ("msr CNTV_CVAL_EL0, %0"::"r"(tickval));
|
||
|
|
__asm__ volatile ("mrs %0, CNTVCT_EL0":"=r"(cntvct_el0));
|
||
|
|
}
|
||
|
|
while (cntvct_el0 >= tickval);
|
||
|
|
|
||
|
|
rt_tick_increase();
|
||
|
|
}
|
||
|
|
|
||
|
|
int rt_hw_timer_init()
|
||
|
|
{
|
||
|
|
uint64_t val;
|
||
|
|
|
||
|
|
rt_hw_interrupt_install(27, rt_hw_timer_isr, RT_NULL, "tick");
|
||
|
|
rt_hw_interrupt_umask(27);
|
||
|
|
|
||
|
|
val = 0;
|
||
|
|
__asm__ volatile ("msr CNTV_CTL_EL0, %0"::"r"(val));
|
||
|
|
val = 0x03B9ACA0;
|
||
|
|
__asm__ volatile ("msr CNTFRQ_EL0, %0"::"r"(val));
|
||
|
|
tickval += 0xF424;
|
||
|
|
__asm__ volatile ("msr CNTV_CVAL_EL0, %0"::"r"(tickval));
|
||
|
|
val = 1;
|
||
|
|
__asm__ volatile ("msr CNTV_CTL_EL0, %0"::"r"(val));
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void idle_wfi(void)
|
||
|
|
{
|
||
|
|
asm volatile ("wfi");
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Initialize the Hardware related stuffs. Called from rtthread_startup()
|
||
|
|
* after interrupt disabled.
|
||
|
|
*/
|
||
|
|
void rt_hw_board_init(void)
|
||
|
|
{
|
||
|
|
uint64_t cont;
|
||
|
|
|
||
|
|
mmu_init();
|
||
|
|
cont = (uint64_t)RT_HW_HEAP_END + 0x1fffff;
|
||
|
|
cont &= ~0x1fffff;
|
||
|
|
cont -= 0x40000000;
|
||
|
|
cont >>= 21;
|
||
|
|
/* memory location */
|
||
|
|
armv8_map_2M(0x40000000, 0x40000000, cont, MEM_ATTR_MEMORY);
|
||
|
|
/* uart location*/
|
||
|
|
armv8_map_2M(PL011_UART0_BASE, PL011_UART0_BASE, 0x1, MEM_ATTR_IO);
|
||
|
|
/* gic location*/
|
||
|
|
armv8_map_2M(GIC_PL390_DISTRIBUTOR_PPTR, GIC_PL390_DISTRIBUTOR_PPTR, 0x1, MEM_ATTR_IO);
|
||
|
|
mmu_enable();
|
||
|
|
|
||
|
|
/* initialize hardware interrupt */
|
||
|
|
rt_hw_interrupt_init(); // in libcpu/interrupt.c. Set some data structures, no operation on device
|
||
|
|
rt_hw_vector_init(); // in libcpu/interrupt.c. == rt_cpu_vector_set_base((rt_ubase_t)&system_vectors);
|
||
|
|
|
||
|
|
/* initialize uart */
|
||
|
|
rt_hw_uart_init(); // driver/drv_uart.c
|
||
|
|
/* initialize timer for os tick */
|
||
|
|
rt_hw_timer_init();
|
||
|
|
rt_thread_idle_sethook(idle_wfi);
|
||
|
|
|
||
|
|
#ifdef RT_USING_CONSOLE
|
||
|
|
/* set console device */
|
||
|
|
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
|
||
|
|
#endif /* RT_USING_CONSOLE */
|
||
|
|
|
||
|
|
#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
|
||
|
|
|
||
|
|
#ifdef RT_USING_COMPONENTS_INIT
|
||
|
|
rt_components_board_init();
|
||
|
|
#endif
|
||
|
|
}
|