I want to know, how Raspberry Pi booting up. Of course, I can google it, but I can`t found this information in official documentation [ https://www.raspberrypi.org/documentation ]. I am searching for official detailed info to understand, how it boots.
Search for "Raspberry Pi boot sequence" will produce https://www.raspberrypi.org/documentation/hardware/raspberrypi/bootmodes/bootflow.md
It took me 1 minute to search for it.