Function ofw_alias_scan

components/drivers/ofw/base.c:1044–1102

}

rt_err_t ofw_alias_scan(void)
{
    rt_err_t err = RT_EOK;
    struct rt_ofw_prop *prop;
    struct rt_ofw_node *np = ofw_node_aliases, *tmp;

    rt_ofw_foreach_prop(np, prop)
    {
        int id = 0;
        struct alias_info *info;
        const char *name = prop->name, *end, *id_start;

        /* Maybe the bootloader will set the name, or other nodes reference the aliases */
        if (!rt_strcmp(name, "name") || !rt_strcmp(name, "phandle"))
        {
            continue;
        }

        if (!(tmp = rt_ofw_find_node_by_path(prop->value)))
        {
            continue;
        }

        end = name + rt_strlen(name);

        while (*(end - 1) && (*(end - 1) >= '0' && *(end - 1) <= '9') && end > name)
        {
            --end;
        }

        id_start = end;
        while (*id_start && (*id_start >= '0' && *id_start <= '9'))
        {
            id *= 10;
            id += (*id_start - '0');

            ++id_start;
        }

        info = rt_malloc(sizeof(*info));

        if (!info)
        {
            err = -RT_ENOMEM;
            break;
        }

        rt_list_init(&info->list);

        info->id = id;
        info->tag = name;
        info->tag_len = end - name;
        info->np = tmp;

        rt_list_insert_after(&_aliases_nodes, &info->list);
    }

    return err;