Hi K-Family,
The best way to learn the boot sequence is really to run a simple program and when debugging, set the debugger to start at the beginning of the code base and then step on through. We don;t have documentation to that level that I know of. Sorry.
Good example to start with:
FSLMQX/mqx/examples/hello project.
In general the very low level code initializes the processor, then initializes the RTOS and whatever BSP drivers were enabled, and then looks to find the first task to start running and run it.
Hope this helps.
Regards,
David