  Typically, even low-level operating system concepts, such as resource sharing
strategies and predictability measures, are evaluated with Linux on PC
hardware. This leaves a large gap to real industrial applications. Hence, the
direct transfer of the results might be difficult. As a solution, we present
toki, a prototyping and evaluation platform based on FreeRTOS and several
open-source libraries. toki comes with a unified build- and test-environment
based on Yocto and Qemu, which makes it well suited for rapid prototyping. With
its architecture chosen similar to production industrial systems, toki provides
the ground work to implement early prototypes of real-time systems research
results, up to technology readiness level 7, with little effort.
