Function rt_hw_common_setup

libcpu/aarch64/common/setup.c:202–324

}

void rt_hw_common_setup(void)
{
    rt_size_t kernel_start, kernel_end;
    rt_size_t heap_start, heap_end;
    rt_size_t init_page_start, init_page_end;
    rt_size_t fdt_start, fdt_end;
    rt_region_t init_page_region = { 0 };
    rt_region_t platform_mem_region = { 0 };
    static struct mem_desc platform_mem_desc;
    const rt_ubase_t pv_off = PV_OFFSET;

    system_vectors_init();

#ifdef RT_USING_SMART
    rt_hw_mmu_map_init(&rt_kernel_space, (void*)0xfffffffff0000000, 0x10000000, MMUTable, pv_off);
#else
    rt_hw_mmu_map_init(&rt_kernel_space, (void*)0xffffd0000000, 0x10000000, MMUTable, 0);
#endif

    kernel_start    = RT_ALIGN_DOWN((rt_size_t)rt_kmem_v2p((void *)&_start) - 64, ARCH_PAGE_SIZE);
    kernel_end      = RT_ALIGN((rt_size_t)rt_kmem_v2p((void *)&_end), ARCH_PAGE_SIZE);
    heap_start      = kernel_end;
    heap_end        = RT_ALIGN(heap_start + ARCH_HEAP_SIZE, ARCH_PAGE_SIZE);
    init_page_start = heap_end;
    init_page_end   = RT_ALIGN(init_page_start + ARCH_INIT_PAGE_SIZE, ARCH_PAGE_SIZE);
    fdt_start       = init_page_end;
    fdt_end         = RT_ALIGN(fdt_start + fdt_size, ARCH_PAGE_SIZE);

    platform_mem_region.start = kernel_start;
    platform_mem_region.end   = fdt_end;

    rt_memblock_reserve_memory("kernel", kernel_start, kernel_end, MEMBLOCK_NONE);
    rt_memblock_reserve_memory("memheap", heap_start, heap_end, MEMBLOCK_NONE);
    rt_memblock_reserve_memory("init-page", init_page_start, init_page_end, MEMBLOCK_NONE);
    rt_memblock_reserve_memory("fdt", fdt_start, fdt_end, MEMBLOCK_NONE);

    /* To virtual address */
    fdt_ptr = (void *)(fdt_ptr - pv_off);
#ifdef KERNEL_VADDR_START
    if ((rt_ubase_t)fdt_ptr + fdt_size - KERNEL_VADDR_START > SIZE_GB)
    {
        fdt_ptr = rt_ioremap_early(fdt_ptr + pv_off, fdt_size);

        RT_ASSERT(fdt_ptr != RT_NULL);
    }
#endif
    rt_memmove((void *)(fdt_start - pv_off), fdt_ptr, fdt_size);
    fdt_ptr = (void *)fdt_start - pv_off;

    rt_system_heap_init((void *)(heap_start - pv_off), (void *)(heap_end - pv_off));

    init_page_region.start = init_page_start - pv_off;
    init_page_region.end = init_page_end - pv_off;
    rt_page_init(init_page_region);

    /* create MMU mapping of kernel memory */
    platform_mem_region.start = RT_ALIGN_DOWN(platform_mem_region.start, ARCH_PAGE_SIZE);
    platform_mem_region.end   = RT_ALIGN(platform_mem_region.end, ARCH_PAGE_SIZE);