June 21-24, 2022
Austin, Texas, USA + Virtual
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Wednesday, June 22 • 2:35pm - 3:15pm
Using FOSS as Part of a System Safety Mechanism - Paul Albertella, Codethink

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Applying functional safety practices to free and open source software (FOSS) can seem challenging, because the communities that develop it very rarely exhibit all of the processes that safety standards expect. We can still make a case for using FOSS in a safety context, however, provided that we can control how we consume and construct it, specify its role and responsibilities, analyse the associated risks and specify how these are mitigated. As part of our ongoing work to accomplish this for systems based on Linux, Codethink have been investigating the range of safety-related responsibilities that FOSS might have in a system and how these may be defined or realised through interactions with other components, both hardware and software. An interesting example, which illustrates these interdependencies, relates to software safety mechanisms that are intended to mitigate random hardware failures. Arm have developed a software test library (STL) to provide this kind of mechanism for their processors. With Arm's support, Codethink have been integrating this for a Linux-based OS and testing it on the Raspberry Pi 4. We describe the challenges we encountered, the approach we took for integration and what we discovered in the process.

avatar for Paul Albertella

Paul Albertella

Consultant, Codethink
Paul Albertella is a consultant at Codethink, with more than 30 years of experience in the automotive, semiconductor and mobile device sectors. He's passionate about software engineering processes and the role that open source software and communities are playing in their evolution... Read More →

Wednesday June 22, 2022 2:35pm - 3:15pm CDT
Room 211/212 (Level 2)