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Method for monitoring an arithmetic unit

A computing unit and processor unit technology, applied in calculation, program control design, faulty computer hardware detection, etc., can solve problems such as component damage, environmental pollution, and damage to motor vehicle layout

Active Publication Date: 2015-09-16
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In "Chip Tuning" an intruder attempts to manipulate the program executed by the processor unit and thus change the control parameters of the controller to cause a performance increase
Since this can damage the entire motor vehicle layout (drive, brakes), it can lead to damage to components and contamination of the environment, and even to personal injury

Method used

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  • Method for monitoring an arithmetic unit
  • Method for monitoring an arithmetic unit

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Experimental program
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Embodiment Construction

[0037] figure 1 The arithmetic unit is shown very simplified and schematically and is marked with 1 . In this exemplary embodiment, the computing unit is designed as an engine control unit 1 of the motor vehicle, which is provided for carrying out an engine control of an internal combustion engine of the motor vehicle.

[0038] The controller has a monolithically integrated processor device 10 with a processor unit 100 and a safety processor unit 200 . The processor unit 100 and the security processor unit 200 are thus two independent individual processor units which are monolithically integrated on a common chip 101 , that is to say on a common (silicon) substrate.

[0039] The processor unit 100 thus has a processor core 110 and a local memory 120 , for example RAM or flash memory. The secure processor unit 200 similarly also has a processor core 210 and a local memory 220 , for example RAM or flash memory.

[0040] Processor unit 100 operates in hypervisor mode (Hypervis...

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PUM

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Abstract

A method is provided for monitoring a control unit having a monolithically integrated processor arrangement including a processor unit and a security processor unit, the processor unit and the security processor unit respectively including one or multiple processor core(s) and a local memory and are designed monolithically, the processor unit carrying out different processes, the security processor unit monitoring whether the different processes carried out by the processor unit are carried out according to certain process criteria and the security processor unit carrying out a safety measure when one of the processes is not carried out according to the certain process criteria.

Description

technical field [0001] The invention relates to a method for monitoring an arithmetic unit having a processor unit and a safety processor unit. Background technique [0002] Modern computing units such as, for example, controllers in motor vehicles comprise at least one processor unit. In the arithmetic unit the permanent program is executed by the processor unit. Such a processor unit can thus include specific processors or processor cores (Cores) or multi-core processors. A multi-core processor thus includes multiple (at least two) processor cores. The processor core thus includes an arithmetic logic unit (ALU), which is the actual electronic arithmetic unit for executing tasks, programs, arithmetic instructions, etc., and also local memory. Such a local memory is formed in particular as a register spare from one or more registers. [0003] Modern processor units are capable of operating in a so-called hypervisor mode. A so-called virtual system or virtual machine is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/26
CPCG06F21/87G06F21/53G06F9/45533G06F11/301G06F21/50
Inventor A.奥厄
Owner ROBERT BOSCH GMBH