Earlier quoted context omitted.
You're wrong, but with such confidence! Here is a documented ARM booting sequence with fully free firmware, https://stikonas.eu/wordpress/2019/09/15/blobless-boot-with-...
That 32k BootROM isn't free in your example. SoCs will also have "pre-boot" code that runs before that: > However, even one of their most ardent open-source advocates pushed back quite hard when I suggested they should share their pre-boot code. By pre-boot code, I’m not talking about the little ROM blob that gets run after reset to set up your peripherals so you can pull your bootloader from SD card or SSD. That par…
It's a ROM. Read only.
https://www.fsf.org/news/freebios.html
"The BIOS was impossible to replace because it was stored in ROM: the only way to to put in a different BIOS was by replacing part of the hardware. In effect, the BIOS was itself hardware--and therefore didn't really count as software. It was like the program that (we can suppose) exists in the computer that (we can suppose) runs your watch or your microwave oven: since you can't install software on it, it may as well be circuits, not a computer at all."
Edit: >ROMs can still be backdoored, which is the point of this discussion.
You said it wasn't free, and when proven wrong, you moved the goalpost. Since I'm a wrongthinker who can only post once every hour or two on this site, I'm done discussing this with you. If you want to try to convince people that a 32K ROM is the same as IntelME, then you're not worth my time anyway.