Gm Global Technolgoy Operations, Inc.

Ronald J Gaynier

James T Kurnik

Ansaf Ibrahem Alrabady

Thomas M Forest

Kevin M Baltes

Marcelleaus P Baines

Terry E Downs

A system and method for verifying that operating software and calibration files are present and valid after a bootloader flashes the files into the memory on a vehicle ECU before allowing the operating software to execute. The ECU memory defines a memory segment for the operating software and the calibration files. A software manifest is provided in a memory slot before the operating software segment in the memory. Likewise, a calibration manifest is provided in a memory slot before the calibration segment in the ECU memory. After the software has been flashed into the ECU memory, a software flag is set in the software manifest memory slot and each time a calibration file is flashed, a calibration flag for the particular calibration file is set in the calibration manifest.

Using a manifest to record presence of valid software and calibration

A processor and memory system includes memory, a table of exceptions, and a processor. The memory includes a plurality of memory blocks. The table of exceptions identifies at least one of the plurality of memory blocks that includes an expected error. The processor diagnoses a security fault based on data stored in at least one of the plurality of memory blocks and the table of exceptions.

Secure flash memory using error correcting code circuitry

A tamper detection system for a control module of a vehicle comprises first nonvolatile memory that stores N rewriteable components including at least one of calibration and software that is used to operate a controlled device of the vehicle, wherein N is an integer greater than zero. The N rewriteable components include an embedded part number (EPN) and an embedded verification number (EVN). Second nonvolatile memory includes a history buffer. A tampering detection module includes a calculated verification number (CVN) generator that generates a CVN for at least one of the N rewriteable components and that stores the CVN in the history buffer. A locking module selectively locks the history buffer under certain conditions.

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Ann Arbor, MI, United States of America

Ronald J Gaynier