Hello, I got my hands on some Raspberry Pi Pico 2 boards and I can finally run NuttX on them.
It took some work, since the M33 core is a bit different than the M0 on the old RP2040. It is working now (nsh and usbnsh configs at least) and even ostest is passing. For my initial PoC, I just edited many files in the rp2040 port but I will create a new rp23xx port and I have some questions on how to organize the files: 1 Where should I put the arch files? Should I put them in arch/arm/src/rp23xx or should they be in a different path that could be reused by the RISC-V and ARM boards? Should we make another arch subdir like arch/multi? Or just have rp23xx in both risc-v and arm directories? If so, then what about the files that are the same and could be reused. Where to put them? Should I care to reuse these files or I can just copy them over when we make the risc-v port? 2. How should I differentiate the boards? should I call raspberry-pi-pico2-arm and raspberry-pi-pico2-riscv? 3. Some of the files could be shared / reused by rp2040 (ARM Cortex M0) and rp23xx (riscv and ARM Cortex M33), how should I proceed to reuse these files and have them in a common directory. What directory would be best? I plan on pushing a PR with the modifications later this week. Thank you!
