ausppc wrote:Are there any guides or other information about the precise series of events for any RPi system from power-on to kernel loaded and ready for further input?
How precise do you need? That is a bit of a vague question
The basic boot sequence is described in various places and easily findable with a search. However, it runs something like this:
ROM Code (built-in, fixed) -> Look for SD card with FAT12/16/32 partition. Locate bootcode.bin. Load it. That then runs on the GPU.
bootcode.bin -> Look for start.elf. Load it. That runs on the GPU too.
(config.txt is read somewhere around here)
start.elf -> Look for kernel.img or kernel7.img on Pi2 (or other file if configured in config.txt). Load that. Fire up the ARM CPU(s) and let them run it.