Explore the intricacies of the Zephyr Project's RTOS start-up and initialization process in this informative conference talk presented by David Leach from NXP. Gain insights into the Cortex-M flow diagram, early startup procedures, and post-kernel APIs. Delve into initialization levels, driver implementation, and the build map structure. Discover the role of static threads in the Zephyr ecosystem and enhance your understanding of this open-source real-time operating system's fundamental operations.