Did the Berlin wall go through all of Germany?

No, the Berlin Wall did not go through all of Germany; it was specifically a barrier that separated East Berlin from West Berlin. The wall was constructed in 1961 to prevent East Germans from fleeing to the West and stood until 1989. While it divided the city of Berlin, the rest of Germany was divided into East Germany (German Democratic Republic) and West Germany (Federal Republic of Germany) along a broader border, but not by a wall like that of Berlin.