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OLLAF : A dual plane reconfigurable architecture for OS support

In the context of large versatile platform for embedded real time system on chip, a fine grained dynamically reconfigurable architecture could be used as one possible computational resource. In order to manage efficiently this resource we need a specific OS kernel able to manage such a hardware adaptable architecture. Both the history of micro-processor based system and our previous work based on currently available FPGA devices led us to think that not only an OS kernel must be defined to handle an FGDRA but a FGDRA must also be designed to handle this OS kernel. This article relate our original work in this direction. OLLAF, an original FGDRA core that we have designed will be presented. A comparison with other methods used today using commercially available FPGA is also presented concerning the particular preemption service.