+ if (!env_get("serial#")) {
+ char *board_serial = env_get("board_serial");
+ char *ethaddr = env_get("ethaddr");
+
+ if (!board_serial || !strncmp(board_serial, "unknown", 7))
+ env_set("serial#", ethaddr);
+ else
+ env_set("serial#", board_serial);
+ }
+