  In this paper, we consider a scenario of spontaneous baryogenesis in a
framework of warm quintessential inflation where the residual inflaton field,
left out after warm inflation, plays the role of quintessence field at late
times and is coupled to a non-conserved baryonic current. Assuming a four
fermion $(B-L)$ violating effective interaction, we have demonstrated that the
required baryon asymmetry can be produced successfully in this case. We show
that the post-inflationary evolution, with the underlying scalar field
potential, $V(\phi)=V^4_0 \exp{(-\alpha \phi^n/M_{\rm Pl}^4 ) }$, $n>1$ well
suited to warm inflation, exhibits scaling behaviour soon after a brief kinetic
regime. We show that the coupling of the scalar field to massive neutrino
matter can give rise to exit from the scaling regime to cosmic acceleration at
late times as massive neutrinos turn non-relativistic. The proposed model is
shown to successfully describe the cosmic history from inflation to late-time
acceleration, with the evolution independent of initial conditions, along with
the generation of baryon asymmetry during the post-inflationary era. A brief
analysis of relic gravity waves produced in the scenario is presented.
