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introduces the key factors involved in the design of an embedded system, . area is today known as hardware/software codesign, providing a global view of the Basically, the automation of the global hw/sw design approach, that .. applications is the scope of SpecSyn, TOSCA, Co-Saw and Polis, while the activity of. Hardware-Software Co-Design of Embedded Systems: The POLIS Approach is Page – A formal specification model for hardware/software codesign. COSYMA (COSYnthesis for eMbedded micro Architectures) is a platform for Hardware-Software Co-Design of Embedded Systems: The Polis Approach.

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Thus, the POLIS system which is a co-design environment for embedded systems is based on a formal model of computation.

Hardware/Software Codesign Group

A synchronous hardware implementation of CFSM can execute a transition in 1 clock cycle, while a software implementation will require more than 1 clock cycle.

The two executables are executed, and the captured profiling data is written to a data base as shown in figure 1. The Complete List of Publications of the Project. Hardware-software partition is decided a priori and is adhered to as much as is possible, because any changes in this partition may necessitate extensive redesign. Design is done in a unified framework, POLISwith a unified hardware-software representation, so as to prejudice neither hardware nor software implementation.

Current topics include synthesis of run-time support, communication synthesisand efficient and accurate co-simulation.


It is designed for control dominated, reactive systems under timing constraints, with a new emphasis on distributed architectures. Lack of a well-defined design flow, which makes specification revision difficult, and directly impacts time-to-market. When the user or tool have selected a hardware and software partition, it is written to the database.

The POLIS Approach will be of interest to embedded system designers automotive electronics, consumer electronics and telecommunicationsmicro-controller designers, CAD smbedded and students. It is closely related to DSP and Telecommunication. Ben Ismail, and A.

Gajski No preview available – The Polis Approach F. The main objective of COOL is heterogeneous implementation. Ptolemy in the acronym is the design tool developed oolis the Univ.

In addition, the graphical user interface is used to define target architectures hardward-software design constraints. This model of computation can also be described as Globally Asynchronous, Locally Synchronous.

Account Hafdware-software Sign in. Formal verification and automatic synthesis of implementations are the surest ways to guarantee safety. These systems are stored in a system library. The environment also builds upon existing synthesis and compilation techniques by encapsulating them and supports system design flows by providing design methodology management support Each element of a network of CFSMs describes a component of the system to be modeled.

The synchronous approach to reactive and real-time systems. Unlike most of the other tools cosyma, cosmos, etc. The environment CoWare supports efficient heterogeneous co-simulation at different design levels by encapsulating the most appropriate simulation methods at those levels.


Today, embedded systems are designed with an ad hoc approach that is heavily based on earlier experience with similar products and on manual design. Embedded systems are codesig used in life-critical situations, where reliability and safety are more important criteria harwdare-software performance. Note this architecture is a “multicomponent architecture” which means the architecture is composed of programmable components processors possibly of different types and of non-programmable components ASIC, FPGA alltogether connected by communication media possibly of different types.

Therefore, we are developing a methodology for specification, automatic synthesis, and validation of this sub-class of embedded systems that hardware-softwqre the examples described above.

A Framework for Hardware-Software Co-Design of Embedded Systems

D thesis at UC Berkeley The abstract and table of content of the thesis: Use of higher-level languages such as C helps structure the design somewhat, but with increasing complexity it is not sufficient. A priori definition of partitions, which leads pllis sub-optimal designs. This permits the use of a broad range of target FPGA-architectures. It is not for circuit synthesis. Some examples of applications of embedded controllers are: The system is divided into three components: