  An N=1 Poincare supergravity action, suitable for describing the Starobinsky
inflation, is proposed. It extends f(R) gravity to supergravity in its
old-minimal version. The action is parametrized by a single holomorphic
potential and a single non-holomorphic potential, and can be dualized into the
standard matter-coupled supergravity action, with the "matter" given by two
chiral superfields. The action extends the earlier proposals for embedding the
Starobinsky inflation into supergravity, and can be further generalized to
include quantum corrections to the inflation. Our approach assumes the
gravitational origin of inflaton and quintessence in the context of
supergravity, by using a single chiral scalar curvature superfield.
