»Updating Embedded Systems -- Putting it all Together«
2017-10-22, 15:15–15:40, Event Loft

Updating embedded systems reliably requires more than just the actual update process. This presentation gives an overview of the overall design and components needed for successful system updates.

With the security issues in recent year, the fact that updates are necessary is no longer in question. Still, for embedded systems updates remain a challenge. With no administrator to handle unexpected problems, a failed update can render the device unusable, which is not acceptable.

Performing updates reliably is only possible when updating is considered in the design of the entire system, from the bootloader to the application.

This presentation gives an overview of the building blocks and decisions made to create such a design. The configuration and boot choices in the bootloader, watchdog handling, monitoring at boot- and runtime and, of course, the actual update process itself.

The result is showcased using various open source components such as barebox, systemd, rauc and casync.