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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Development of a Safe Architecture for Embedded Systems Using Linux and Zephyr RTOS / Utveckling av en säker arkitektur för inbyggda system med Linux och Zephyr RTOS

Richárd, Vágó January 2022 (has links)
Embedded systems often involve safety critical applications, meaning that the malfunctioning of these systems would lead to catastrophic consequences. In this thesis project, a cross domain comparison of the industry specific standards for safety in embedded systems is be provided. After this, following the guidelines provided in ISO-26262/IEC-61508, a failure modes and effects analysis was performed on the implemented system, which consists of a STM32MP157F-DK2 board, on which two cores of the same SoC communicate through Remote Processor Messaging. One core runs OpenSTLinux, and the other the real-time operating system Zephyr. Based on the results of the failure modes and effects analysis, a combination of the addition of some headers to the message, and the implementation of cyclic redundant check, solved some of the issues pointed out. / Inbäddade system omfattar ofta säkerhetskritiska tillämpningar, vilket innebär att att fel i dessa system skulle leda till katastrofala konsekvenser. I detta avhandlingsprojekt görs en tvärdomänisk jämförelse av de branschspecifika standarder för säkerhet i inbyggda system. Därefter följer följande riktlinjerna i ISO-26262/IEC-61508, en analys av fel och effekter av fel och analys av fel och brister på det implementerade systemet, som består av följande ett STM32MP157F-DK2-kort, där två kärnor i samma SoC kommunicerar via Meddelandehantering för fjärrprocessor. Den ena kärnan kör OpenSTLinux och den andra realtidsoperativsystemet Zephyr. Baserat på resultaten av felet analysen av felkällor och effekter, en kombination av att lägga till vissa rubriker och till meddelandet och genomförandet av cyklisk redundant kontroll, löste problemet. några av de problem som påpekades.
2

Asymmetric Multiprocessing on the ARM Cortex-A9 / Asymmetric Multiprocessing on the ARM Cortex-A9

Riša, Michal January 2015 (has links)
Asymmetric multiprocessing (AMP) is a way of distributing computer system load toheterogeneous hardware and software environment. This thesis describes the principles of the AMP focusing on the ARM Cortex--A9 processor and Altera Cyclone V hardware platform. Development of a OpenAMP framework based AMP system showing communication among the processor cores, documentation and future work suggestion are the products of this thesis.

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