Function fdt_reserved_memory_reg

components/drivers/ofw/fdt.c:227–268

}

static rt_err_t fdt_reserved_memory_reg(int nodeoffset, const char *uname)
{
    rt_err_t err = RT_EOK;

    rt_ubase_t base, size;
    const fdt32_t *prop;
    int len, t_len = (_root_addr_cells + _root_size_cells) * sizeof(fdt32_t);

    if ((prop = fdt_getprop(_fdt, nodeoffset, "reg", &len)))
    {
        if (len && len % t_len != 0)
        {
            LOG_E("Reserved memory: invalid reg property in '%s', skipping node", uname);
            err = -RT_EINVAL;
        }
        else
        {
            for (; len >= t_len; len -= t_len)
            {
                base = rt_fdt_next_cell(&prop, _root_addr_cells);
                size = rt_fdt_next_cell(&prop, _root_size_cells);

                if (!size)
                {
                    continue;
                }

                rt_bool_t is_nomap = fdt_getprop(_fdt, nodeoffset, "no-map", RT_NULL) ? RT_TRUE : RT_FALSE;
                base = rt_fdt_translate_address(_fdt, nodeoffset, base);

                rt_memblock_reserve_memory(fdt_get_name(_fdt, nodeoffset, RT_NULL),
                        base, base + size, is_nomap);
            }
        }
    }
    else
    {
        err = -RT_EEMPTY;
    }

    return err;
}

static void fdt_scan_reserved_memory(void)
{