Embedded Software for SoC by Ahmed Amine Jerraya, Sungjoo Yoo, Norbert Wehn, Diederik

By Ahmed Amine Jerraya, Sungjoo Yoo, Norbert Wehn, Diederik Verkest

This name covers all software-related points of SoC layout, from embedded and application-domain particular working platforms to approach structure for destiny SoC. it is going to provide embedded software program designers important insights into the restrictions imposed by means of embedded software program in an SoC context.

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However‚ at least for engine control units‚ there is today no well-defined software integration process that satisfies all key requirements of automotive manufacturers. We propose a methodology for safe integration of automotive software functions where required performance information is exchanged while each partner’s IP is protected. We claim that in principle performance requirements and constraints (timing‚ memory consumption) for each software component and for the complete ECU can be formally validated‚ and believe that ultimately such formal analysis will be required for legal certification of an ECU.

1c standards. We conclude this case study by simulation results obtained by cycle true simulation of an MJPEG video decoder application on the multiprocessor‚ using several scheduler organizations and architectural parameters. Key words: micro-kernel‚ virtual chip interconnect‚ POSIX threads‚ multiprocessor 1. INTRODUCTION Applications targeted to SoC implementations are often specified as a set of concurrent tasks exchanging data. Actual co-design implementations of such specifications require a multi-threaded kernel to execute the parts of the application that has been mapped to software.

This outline Lightweight Implementation of the POSIX Threads API 35 Table 3-1. Kernel code size (in bytes). Organization SMP NON_SMP_CS NON_SMP_DS Code size 7556 9704 10192 Chapter 3 36 its capacity to use the CPU cycles more efficiently. However‚ task migration has a high cost in terms of cache misses‚ and therefore‚ the final cycle count is comparable to the other ones. It shall be noted that the SMP interest might become less clear if shared memory latency access increases too much. The NON_SMP_DS strategy is more complicated from an implementation point of view.

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