Method for operating a control device

Abstract

A method for operating a control device having a system-on-a-chip (100) having a processor unit (110) and a security processor unit (120), the processor unit (110) and the security processor unit (120) each having at least one processor core (111, 112, 113, 121), the processor unit (11) instructing the security processor unit (120) to execute security-critical processes, a priority being assigned, by the processor unit (110) or by the security processor unit (120), to each of the security-critical processes (210, 220, 230, 240) that are to be executed in the security processor unit (120), and the security-critical processes (210, 220, 230, 240) being executed in the security processor unit (120) as a function of the respective priority.

Description

technical field [0001] The invention relates to a method for operating a control device having a system-on-chip with a processor unit and a secure processor unit, as well as a computing unit and a computer program for carrying out the method. Background technique [0002] A System-on-a-Chip (SoC) is an integrated circuit (IC) in which multiple functions of the corresponding system are integrated on a single chip (Die). Such a Soc may include a processor unit (processor system part, PS). Such a processor unit may comprise a suitable processor or processor core or a multi-core processor. A multi-core processor includes multiple (at least two) processor cores. A processor core usually includes an arithmetic logic unit (ALU), which is the actual electronic arithmetic unit for executing tasks, programs, calculation commands, etc., and also local memory. [0003] In addition to the processor unit, the SoC can also include a so-called hardware security module (HardwareSecurityMo...

AI Technical Summary

Problems solved by technology

However, the use of conventional HSMs mostly cannot guarantee that safety-critical processes meet real-time conditions.

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