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Adapting Commercial Off-The-Shelf Multicore Processors for Safety-Related Automotive Systems Using Online Monitoring

Bapp, Falco K.; Sander, Oliver; Sandmann, Timo; Vu Duy, Viet; Baehr, Steffen; Becker, Jürgen

Multicores, being the latest state-of-the-art technology, gain more and more importance in automotive and aerospace systems. This technology will not only be used in infotainment and non-safety-critical applications but will also be introduced in upcoming safety-critical systems. At the moment, various commercial off-the-shelf processors are available that are, however, not built for such applications. In order to ensure correct system behavior, online monitoring can be used for processors targeting infotainment or general purpose applications. The cores and other bus masters within the MPSoC compete for the exclusive use of shared resources like a memory controller. It is of high importance to provide guarantees of usage in such cases, e.g. in terms of access time and rates. For this purpose we present an online monitoring based on a commercial off-the-shelf multicore processor that provides knowledge about the usage of the direct memory access (DMA) controller in terms of accesses and activation sources. Furthermore, with this information, conclusions about the memory controller workload are drawn. The concept is implemented by using Freescale’s i.MX6 Quad platform, which is targeting automotive infotainment. ... mehr

DOI: 10.4271/2015-01-0280
Zitationen: 2
Zugehörige Institution(en) am KIT Institut für Technik der Informationsverarbeitung (ITIV)
Publikationstyp Forschungsbericht/Preprint
Publikationsjahr 2015
Sprache Englisch
Identifikator ISSN: 0148-7191
KITopen-ID: 1000078855
Verlag SAE International
Umfang 11 S.
Serie SAE Technical Paper ; 2015-01-0280
Nachgewiesen in Scopus
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