Talk:NixOS on ARM/Raspberry Pi 4: Difference between revisions
imported>Kaligule Explained some questions about the article. |
→Enabling the SPI: new section |
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First follow the generic installation steps to get the installer image and install using the installation and configuration steps. | First follow the generic installation steps to get the installer image and install using the installation and configuration steps. | ||
(Link to https://nixos. | (Link to https://wiki.nixos.org/wiki/NixOS_on_ARM#Installation which itself links to | ||
'''https://hydra.nixos.org/job/nixos/release-20.03/nixos.sd_image.aarch64-linux''') | '''https://hydra.nixos.org/job/nixos/release-20.03/nixos.sd_image.aarch64-linux''') | ||
Until the generic image works, a temporary device-specific image is build on Hydra. Note that this image is not using u-boot, but rather the Raspberry Pi specific bootloader configuration. | Until the generic image works, a temporary device-specific image is build on Hydra. Note that this image is not using u-boot, but rather the Raspberry Pi specific bootloader configuration. | ||
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There is also this line: "These configurations will boot (from this PR comment):" | There is also this line: "These configurations will boot (from this PR comment):" | ||
But then no configurations do follow. | But then no configurations do follow. | ||
== Viable Pi 4 (B) image(s) == | |||
(The confusion around working images is compounded by the fact that Hydra offers identically-named downloads have non-identical contents, and the underscore/hyphen nomenclature varies wildly. It took me a while to confirm that the file I'd downloaded matched the build link below.) | |||
... | |||
Currently, [https://hydra.nixos.org/build/149338044/ build #149338044] has worked twice on my Pi 4 (B) hardware. | |||
My usage is command-line only (Bash on TTY + ssh/mosh headless use), and the first run was stable for about three or four weeks of daily-ish use. | |||
... | |||
To be quite honest, I'm not sure how I found that specific working image. | |||
I know my path led past here, which is why I'm posting, but I know it involved a lot of negotiating with Hydra's willingness to purge long-running queries and finding a way to list successful sd_image_new_kernel.aarch64-linux builds (maybe via [https://hydra.nixos.org/search?query=nixos-sd-image-21.11pre this query?]. Following that logic has been somewhat of a mixed bag, eg today I've unsuccessfully attempted to get both [https://hydra.nixos.org/build/154444353 build #154444353] and [https://hydra.nixos.org/build/154444322 build #154444322] to run. | |||
== Enabling the SPI == | |||
This section is confusing, mostly because it has factual errors and i can't get it to work. | |||
For starters, it talks about <code>dtsoFile = ./spi0-0cd.dtso;</code>, which should probably be <code>dtboFile = ./spi0-0cs.dtbo;</code> (note the ''dtbo'' and ''cs'' part, the page mentions ''dtso'' and ''cd'') - at least that is my idea, if i look at the link's (below) target, which is <code>https://github.com/raspberrypi/firmware/blob/master/boot/overlays/spi0-0cs.dtbo</code> | |||
Also, it is unclear on how one should ''change the <code>compatible</code> field'' in a dtbo-file - editing is only possible on their corresponding source files - while the text actually mentions ''dtbo'' here ;) | |||
I've adapted my configuration to this but don't get any spi devices (nor does <code>spi</code> appear in dmesg). I'm also wondering wether using <code>boot.kernelPackages = pkgs.linuxPackages_rpi4;</code> is still relevant (it is mentioned in [https://github.com/NixOS/nixos-hardware/issues/565 nixos-hardware-issues/565]) while some other user claims that "using nixos-hardware wasn't necessary anymore" ([https://github.com/NixOS/nixos-hardware/issues/631#issuecomment-1584100732 nixos-hardware/issues/631] - maybe unrelated) | |||
It would probably help, if someone knowledgeable can verify these instructions and in general clarify the confusions i mentioned. | |||
Thanks in advance, [[User:Riot|Riot]] ([[User talk:Riot|talk]]) 21:44, 3 April 2024 (UTC) | |||