Design patterns, which encapsulate common solutions to the recurring design problems, have contributed to the increased reuse, quality and productivity in software design. We argue that hardware design patterns could be used for customizing and integrating the Intellectual Property (IP) components into System-on-Chip designs. We formulate the role of design patterns in HW design, and describe their implementation using metaprogramming. We propose a Wrapper design pattern for adapting the behavior of the soft IPs, and demonstrate its application to the communication interface synthesis.

We consider the one- and two-language approaches (1LA & 2LA) for developing generic components (GCs) for VHDL generators. By 1LA & 2LA we mean a generalization using "pure" VHDL, or using the VHDL abstractions mixed with Open PROMOL, the external scripting language we have developed for building GCs and generators, respectively. We present the evaluation of both approaches.