  We construct stable domain walls in a shape of a torus in the Faddeev-Skyrme
model with a quadratic potential term admitting two discrete vacua. The phase
modulus of the domain wall is twisted P and Q times along the toroidal and
poloidal cycles of the torus, respectively, where Q represents the constituent
lump charge. We find that these solutions carry the Hopf charge PQ and can be
regarded as Hopfions. The toroidal domain walls are characterized by the two
topological charges (P,Q), unlike the conventional Hopfions characterized by
only the Hopf charge. We explicitly construct stable solutions of the toroidal
domain walls with P, Q = 1,2,3, yielding the Hopf charges 1,2,3,4,6,9.
