Function rt_ofw_append_child

components/drivers/ofw/base.c:1357–1414

}

struct rt_ofw_node *rt_ofw_append_child(struct rt_ofw_node *parent, const char *full_name)
{
    rt_phandle phandle;
    rt_err_t err = RT_EOK;
    fdt32_t *phandle_value;
    struct rt_ofw_node *np = RT_NULL, *child;

    if (full_name)
    {
        if ((phandle = ofw_phandle_next()))
        {
            np = rt_calloc(1, sizeof(*np) + sizeof(*phandle_value));
        }
    }

    if (np)
    {
        parent = parent ? : ofw_node_root;

        np->full_name = full_name;
        np->phandle = phandle;
        np->parent = parent;

        rt_ref_init(&np->ref);

        phandle_value = (void *)np + sizeof(*np);
        *phandle_value = cpu_to_fdt32(phandle);

        err = rt_ofw_append_prop(np, "phandle", sizeof(*phandle_value), phandle_value);

        if (!err)
        {
            if (parent->child)
            {
                rt_ofw_foreach_child_node(parent, child)
                {
                    if (!child->sibling)
                    {
                        child->sibling = np;
                        rt_ofw_node_put(child);
                        break;
                    }
                }
            }
            else
            {
                parent->child = np;
            }
        }
        else
        {
            rt_free(np);
            np = RT_NULL;
        }
    }

    return rt_ofw_node_get(np);
}