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Abstract
Real-time embedded platforms with resource constraints can take the benefits of mixed-criticality system where applications with different criticality-level share computational resources, with isolation in the temporal and spatial domain. A conventional software-based isolation mechanism adds additional overhead and requires certification with the highest level of criticality present in the system, which is often an expensive process. In this article, we present a different approach where the required isolation is established at the hardware-level by featuring partitions within the processor. A four-stage pipelined soft-processor with replicated resources in the data-path is introduced to establish isolation and avert interference between the partitions. A cycle-accurate scheduling mechanism is implemented in the hardware for hard-real-time partition scheduling that can accommodate different periodicity and execution time for each partition as per user needs, while preserving time-predictability at the individual application level. Applications running within a partition has no sense of the virtualization and can execute either on a host-software or directly on the hardware. The proposed architecture is implemented on FPGA thread and demonstrated with an avionics use case.
Originalsprog | Engelsk |
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Artikelnummer | 8935377 |
Tidsskrift | IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems |
Vol/bind | 39 |
Udgave nummer | 10 |
Sider (fra-til) | 2307-2318 |
Antal sider | 12 |
ISSN | 0278-0070 |
DOI | |
Status | Udgivet - 2020 |
Fingeraftryk
Dyk ned i forskningsemnerne om 'Ærø: A Platform Architecture for Mixed-Criticality Airborne Systems'. Sammen danner de et unikt fingeraftryk.Projekter
- 1 Afsluttet
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PREDICT: Time-predictable Distributed Control Systems
Schoeberl, M., la Cour-Harbo, A., Bak, T. & Sparsø, J.
Danmarks Frie Forskningsfond | Teknologi og Produktion
01/10/2016 → 31/12/2020
Projekter: Projekt › Forskning