  It is shown that the action of the bosonic sector of D=11 supergravity may be
obtained by means of a suitable scaling of the originally dimensionless fields
of a generalized Chern-Simons action. This follows from the eleven-form
CS-potential of the most general linear combination of closed, gauge invariant
twelve-forms involving the sp(32)-valued two-form curvatures supplemented by a
three-form field. In this construction, the role of the skewsymmetric
four-index auxiliary function needed for the first order formulation of $D=11$
supergravity is played by the gauge field associated with the five Lorentz
indices generator of the bosonic sp(32) subalgebra of osp(1|32).
