721 static int add_dt_overlay_fragment(struct dt_descriptor *dt, int ioffs)  in add_dt_overlay_fragment()  argument
727 	ret = snprintf(frag, sizeof(frag), "fragment@%d", dt->frag_id);  in add_dt_overlay_fragment()
731 	offs = fdt_add_subnode(dt->blob, ioffs, frag);  in add_dt_overlay_fragment()
735 	dt->frag_id += 1;  in add_dt_overlay_fragment()
737 	ret = fdt_setprop_string(dt->blob, offs, "target-path", "/");  in add_dt_overlay_fragment()
741 	return fdt_add_subnode(dt->blob, offs, "__overlay__");  in add_dt_overlay_fragment()
744 static int init_dt_overlay(struct dt_descriptor *dt, int __maybe_unused dt_size)  in init_dt_overlay()  argument
749 		if (!fdt_check_header(dt->blob)) {  in init_dt_overlay()
750 			fdt_for_each_subnode(fragment, dt->blob, 0)  in init_dt_overlay()
751 				dt->frag_id += 1;  in init_dt_overlay()
756 	return fdt_create_empty_tree(dt->blob, dt_size);  in init_dt_overlay()
759 static int add_dt_overlay_fragment(struct dt_descriptor *dt __unused, int offs)  in add_dt_overlay_fragment()
764 static int init_dt_overlay(struct dt_descriptor *dt __unused,  in init_dt_overlay()
781 	struct dt_descriptor *dt = &external_dt;  in init_external_dt()  local
804 		dt->blob = core_mmu_add_mapping(MEM_AREA_EXT_DT, phys_dt,  in init_external_dt()
806 		if (!dt->blob)  in init_external_dt()
810 		dt->blob = phys_to_virt(phys_dt, mtype, dt_sz);  in init_external_dt()
811 		if (!dt->blob) {  in init_external_dt()
818 	ret = init_dt_overlay(dt, dt_sz);  in init_external_dt()
825 	ret = fdt_open_into(dt->blob, dt->blob, dt_sz);  in init_external_dt()
881 int add_dt_path_subnode(struct dt_descriptor *dt, const char *path,  in add_dt_path_subnode()  argument
886 	offs = fdt_path_offset(dt->blob, path);  in add_dt_path_subnode()
889 	offs = add_dt_overlay_fragment(dt, offs);  in add_dt_path_subnode()
892 	return fdt_add_subnode(dt->blob, offs, subnode);  in add_dt_path_subnode()
908 int add_res_mem_dt_node(struct dt_descriptor *dt, const char *name,  in add_res_mem_dt_node()  argument
918 	offs = fdt_path_offset(dt->blob, "/reserved-memory");  in add_res_mem_dt_node()
929 		len_size = fdt_size_cells(dt->blob, offs);  in add_res_mem_dt_node()
932 		addr_size = fdt_address_cells(dt->blob, offs);  in add_res_mem_dt_node()
938 		offs = add_dt_path_subnode(dt, "/", "reserved-memory");  in add_res_mem_dt_node()
941 		ret = fdt_setprop_cell(dt->blob, offs, "#address-cells",  in add_res_mem_dt_node()
945 		ret = fdt_setprop_cell(dt->blob, offs, "#size-cells", len_size);  in add_res_mem_dt_node()
948 		ret = fdt_setprop(dt->blob, offs, "ranges", NULL, 0);  in add_res_mem_dt_node()
957 	offs = fdt_add_subnode(dt->blob, offs, subnode_name);  in add_res_mem_dt_node()
963 		ret = fdt_setprop(dt->blob, offs, "reg", data,  in add_res_mem_dt_node()
967 		ret = fdt_setprop(dt->blob, offs, "no-map", NULL, 0);  in add_res_mem_dt_node()