Add pico2 arm flashless target board

[Grazfather]

Inspired by #602.

Authored by Tudor Andrei Dicu AKA @tact1m4n3

[tact1m4n3]

I've been working on getting hil-testing to work on rp2350 and I wanted to use a ram image. I struggled a bit until I got anything running in ram. If you want, I can add the changes I made here. I haven't been able to use the ram_entry_point yet since rp2350 expects the image to start with the vector table (if you don't modify anything in bootmeta).

[Grazfather]

I blindly took this from Felix’s PR and haven’t tested yet. Feel free to take over! Thanks, G

…

On Sun, Jun 22, 2025 at 4:38 PM Tudor Andrei Dicu ***@***.***> wrote: ***@***.**** commented on this pull request. I've been working on getting hil-testing to work on rp2350 and I wanted to use a ram image. I struggled a bit until I got anything running in ram. If you want, I can add the changes I made here. I haven't been able to use the ram_entry_point yet since rp2350 expects the image to start with the vector table (if you don't modify anything in bootmeta). ------------------------------ In port/raspberrypi/rp2xxx/build.zig <#604 (comment)> : > @@ -191,6 +192,14 @@ pub fn init(dep: *std.Build.Dependency) Self { .root_source_file = b.path("src/boards/raspberry_pi_pico2.zig"), }, }), + .pico2_arm_flashless = chip_rp2350_arm.derive(.{ Isn't a custom linker script needed? — Reply to this email directly, view it on GitHub <#604 (review)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AADZNHXXQFPCDCSW6IG4PVL3E4H3HAVCNFSM6AAAAAB73RBM6SVHI2DSMVQWIX3LMV43YUDVNRWFEZLROVSXG5CSMV3GSZLXHMZDSNBYGMZDMOJXGI> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[tact1m4n3]

I've tested rp2040 and rp2350 (arm + riscv) and they seem to work properly.

[tact1m4n3]

Should be ready! Nah. Just one more thing on my list. Done!

[mattnite]

We gtg?

[tact1m4n3]

Yep