Weight distributions of cyclic codes of length lmlm

Suppose that lv||q−1lv||q−1, where l is a prime and v   is a positive integer, and 4|q−14|q−1 if l=2l=2. In this paper, we give the weight distributions of all cyclic codes of length lmlm whose duals have at most two zeros and the weight distribution of a special code of length lmlm whose dual has three zeros.