Abstraction de la synchronisation dans une strategie de co-design logiciel/materiel sur une plateforme (SoC) multiprocesseur

A growing number of embedded systems today are manufactured on a single electronic chip. In such a case, a system is called a system-on-chip or SoC. The design and implementation of SoCs rely on semiconductor technologies which nowadays increase in terms of integration levels. Considering that such systems are more compact, operate with lower power and offer unprecedented performances in comparison to their ancestors, they are more complex to design. This increase in complexity is amplified by the introduction of MPSoCs, the multiprocessor systems-on-chip. SPACE, a design platform, is meant to facilitate the design and implementation of systems-on-chip. SPACE operates at an abstraction level higher than the more conventional RTL level: the electronic system level (ESL). SPACE relies on IP component assembly in order to create an electronic system. Overall, SPACE offers a faster and cheaper solution to creating efficient SoCs.; SPACE seeks to expand its services in order to support the creation of MPSoCs. Multiprocessor platforms require additional functionalities. The SISSMA library developed in this research integrates synchronization services for MPSoC into SPACE. The SISSMA library first serves as an initial analysis to the integration of generic synchronization support, independent of the hardware platform used. Its configurability makes it attractive in considering a key factor of ESL design: hardware/software partitioning of system tasks. Hence, in complete harmony with electronic system level methodology and with the SPACE platform, an application does not require custom tuning following its hardware/software partitioning since SISSMA ensure the changes through its configuration options. To conclude, it is demonstrated that the performance overhead of the SISSMA library are negligible during local synchronizations. For remote synchronizations, they demand less than twice the synchronization time required by the MicroC/OS-II real-time operating system.