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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-01-30 lizhirui first version
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtdevice.h>
#include "board.h"
#include "tick.h"
#include "drv_uart.h"
#include "sysctl_boot.h"
#ifdef RT_USING_SMART
#include <mmu.h>
#include "page.h"
#endif
extern unsigned int __sram_size;
extern unsigned int __sram_base;
extern unsigned int __sram_end;
#define RAM_END (rt_size_t)((void *)&__sram_end)
extern unsigned int __bss_start;
extern unsigned int __bss_end;
#define RT_HW_HEAP_BEGIN ((void *)&__bss_end)
#define RT_HW_HEAP_END ((void *)(((rt_size_t)RT_HW_HEAP_BEGIN) + CONFIG_MEM_RTSMART_HEAP_SIZE))
#define RT_HW_PAGE_START ((void *)((rt_size_t)RT_HW_HEAP_END + sizeof(rt_size_t)))
#define RT_HW_PAGE_END ((void *)(RAM_END))
#ifdef RT_USING_SMART
rt_region_t init_page_region = {(rt_size_t)RT_HW_PAGE_START, (rt_size_t)RT_HW_PAGE_END};
extern size_t MMUTable[];
struct mem_desc platform_mem_desc[] = {
{KERNEL_VADDR_START, (rt_size_t)(KERNEL_VADDR_START + CONFIG_MEM_MMZ_BASE + CONFIG_MEM_MMZ_SIZE - 1), (rt_size_t)ARCH_MAP_FAILED, NORMAL_MEM},
};
#define NUM_MEM_DESC (sizeof(platform_mem_desc) / sizeof(platform_mem_desc[0]))
#endif /* RT_USING_SMART */
#ifndef ARCH_REMAP_KERNEL
#define IOREMAP_VEND USER_VADDR_START
#else
#define IOREMAP_VEND 0ul
#endif
//初始化BSS节区
void init_bss(void)
{
unsigned int *dst;
dst = &__bss_start;
while ((rt_ubase_t)dst < (rt_ubase_t)&__bss_end)
{
*dst++ = 0;
}
}
static void __rt_assert_handler(const char *ex_string, const char *func, rt_size_t line)
{
rt_kprintf("(%s) assertion failed at function:%s, line number:%d \n", ex_string, func, line);
asm volatile("ebreak":::"memory");
}
//BSP的C入口
void primary_cpu_entry(void)
{
//关中断
rt_hw_interrupt_disable();
rt_assert_set_hook(__rt_assert_handler);
//启动RT-Thread Smart内核
entry();
}
#define IOREMAP_SIZE (1ul << 30)
//这个初始化程序由内核主动调用，此时调度器还未启动，因此在此不能使用依赖线程上下文的函数
void rt_hw_board_init(void)
{
#ifdef RT_USING_SMART
/* init data structure */
rt_hw_mmu_map_init(&rt_kernel_space, (void *)(IOREMAP_VEND - IOREMAP_SIZE), IOREMAP_SIZE, (rt_size_t *)MMUTable, PV_OFFSET);
/* init page allocator */
rt_page_init(init_page_region);
/* setup region, and enable MMU */
rt_hw_mmu_setup(&rt_kernel_space, platform_mem_desc, NUM_MEM_DESC);
#endif
#ifdef RT_USING_HEAP
/* initialize memory system */
rt_system_heap_init(RT_HW_HEAP_BEGIN, RT_HW_HEAP_END);
#endif
/* initalize interrupt */
rt_hw_interrupt_init();
/* initialize hardware interrupt */
rt_hw_uart_init();
rt_hw_tick_init();
#ifdef RT_USING_CONSOLE
/* set console device */
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#endif /* RT_USING_CONSOLE */
#ifdef RT_USING_COMPONENTS_INIT
rt_components_board_init();
#endif
}
void rt_hw_cpu_reset(void)
{
sysctl_boot_reset_soc();
while(1);
}
MSH_CMD_EXPORT_ALIAS(rt_hw_cpu_reset, reboot, reset machine);
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