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uboot: add support for the Raspberry Pi Zero W #41091

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uboot: add support for the Raspberry Pi Zero W #41091

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lopsided98
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Motivation for this change

Even thought the hardware is very similar to the Raspberry Pi 1, U-Boot has a separate config for the Raspberry Pi Zero W. The main difference seems to be a different pin for the LED.

  • Tested using sandboxing (nix.useSandbox on NixOS, or option build-use-sandbox in nix.conf on non-NixOS)
  • Built on platform(s)
    • NixOS
    • macOS
    • other Linux distributions
  • Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
  • Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
  • Tested execution of all binary files (usually in ./result/bin/)
  • Fits CONTRIBUTING.md.

@dezgeg
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dezgeg commented May 26, 2018

I have this branch of various Rasberry Pi / U-Boot changes which adds the rpi0 U-Boot as well, can you try this: https://github.com/dezgeg/nixpkgs/commits/plat-fix-with-rpi0. Hopefully I get to do final testing + merging next week.

@lopsided98
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Thanks, those commits look great. I agree that we should probably switch to using a mainline kernel whenever we can. I am running mainline on my Raspberry Pi 1B and Zero W, and it is working well. The only issue I ran into was that the wifi didn't work out of the box on the Zero W, but I have a fix for that (I think it will also fix the Raspberry Pi 3's wifi).

I tried updating linux_rpi to the latest version a few days ago, but I wasn't able to get it to boot. I didn't update raspberrypifw, so maybe that was the problem.

@lopsided98 lopsided98 closed this May 27, 2018
@lopsided98 lopsided98 deleted the uboot-raspberry-pi-zero branch May 27, 2018 00:34
@dezgeg
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dezgeg commented May 27, 2018

Newer linux_rpi not booting is fixed by the patch included in the U-Boot upgrade (and a few days ago got upstream to be included in the next release)

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@lopsided98 @dezgeg @GrahamcOfBorg