Martin Atkins on Nostr: FWIW, I found bare metal on the Pi4 generation considerably more efficient once I ...
FWIW, I found bare metal on the Pi4 generation considerably more efficient once I reconfigured the bootloader to netboot (from a tftp server on my dev machine) and attached a JTAG interface to it so I could step-debug my early boot code using OpenOCD.
I've never used a Pi400 so I don't know if all of this is transferrable but attached is my CM4 setup (with Ethernet unplugged right now just because I'm working with a RISC-V board currently)