Connecting Pre-silicon and Post-silicon Verification

S. Ray and W. A. Hunt, Jr.

In A. Biere and C. Pixley, editors, Proceedings of the 9th International Conference on Formal Methods in Computer-aided Design (FMCAD 2009), Austin, TX, November 2009, pages 160-163. IEEE Computer Society.

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We present a framework for post-silicon analysis, that provides a formal, bidirectional communication with pre-silicon verification. We show how to exploit the framework to provide a formal guarantee on post-silicon verification accuracy under limited observability. In particular, we partition a pre-silicon assertion checker (with full observability) into (1) a limited-observability checker and (2) an in-silicon integrity unit. The composition of the two units is guaranteed to provide the same accuracy as a pre-silicon checker. We apply the framework in the verification of a cache system.

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