Nordic Semiconductor Asa

Piotr Zięcik

Krzysztof Chruściński

A bootloader comprises software instructions for execution by a processor of an electronic processing device. The bootloader comprises an interpreter for interpreting a boot script stored in a memory of the processing device, and an integrity checker for checking the integrity of boot scripts stored in the memory. The bootloader comprises instructions for using the integrity checker to check the integrity of a first boot script of a plurality of boot scripts stored in the memory. The bootloader also comprises instructions for using the integrity checker to check the integrity of a second boot script of the plurality of boot scripts stored in the memory, independently of the integrity of the first boot script. The interpreter comprises instructions for interpreting a control-flow command in the first boot script, the control-flow command conditionally or unconditionally causing the bootloader to start interpreting commands from the second boot script.

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Cracow, Poland

Piotr Zięcik