84 lines
3.1 KiB
Nix
84 lines
3.1 KiB
Nix
{ lib, pkgs, ... }:
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let
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# use the last commit on the 5.18 branch (5.18.14)
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# manjaro's changes between kernel patch versions tend to be minimal if any.
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manjaroBase = "https://gitlab.manjaro.org/manjaro-arm/packages/core/linux/-/raw/25bd828cd47b1c6e09fcbcf394a649b89d2876dd";
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manjaroPatch = name: sha256: {
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inherit name;
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patch = pkgs.fetchpatch {
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inherit name;
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url = "${manjaroBase}/${name}?inline=false";
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inherit sha256;
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};
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};
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# the idea for patching off Manjaro's kernel comes from jakewaksbaum:
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# - https://git.sr.ht/~jakewaksbaum/pi/tree/af20aae5653545d6e67a459b59ee3e1ca8a680b0/item/kernel/default.nix
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# - he later abandoned this, i think because he's using the Pinephone Pro which received mainline support.
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manjaroPatches = [
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(manjaroPatch
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"1001-arm64-dts-allwinner-add-hdmi-sound-to-pine-devices.patch"
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"sha256-DApd791A+AxB28Ven/MVAyuyVphdo8KQDx8O7oxVPnc="
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)
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# these patches below are critical to enable wifi (RTL8723CS)
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# - the alternative is a wholly forked kernel by megi/megous:
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# - https://xnux.eu/howtos/build-pinephone-kernel.html#toc-how-to-build-megi-s-pinehpone-kernel
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# - i don't know if these patches are based on megi's or original
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(manjaroPatch
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"2001-Bluetooth-Add-new-quirk-for-broken-local-ext-features.patch"
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"sha256-CExhJuUWivegxPdnzKINEsKrMFx/m/1kOZFmlZ2SEOc="
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)
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(manjaroPatch
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"2002-Bluetooth-btrtl-add-support-for-the-RTL8723CS.patch"
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"sha256-dDdvOphTcP/Aog93HyH+L9m55laTgtjndPSE4/rnzUA="
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)
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(manjaroPatch
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"2004-arm64-dts-allwinner-enable-bluetooth-pinetab-pinepho.patch"
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"sha256-o43P3WzXyHK1PF+Kdter4asuyGAEKO6wf5ixcco2kCQ="
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)
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# XXX: this one has a Makefile, which hardcodes /sbin/depmod:
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# - drivers/staging/rtl8723cs/Makefile
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# - not sure if this is problematic?
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(manjaroPatch
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"2005-staging-add-rtl8723cs-driver.patch"
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"sha256-6ywm3dQQ5JYl60CLKarxlSUukwi4QzqctCj3tVgzFbo="
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)
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];
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in
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{
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# use Megi's kernel:
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# even with the Manjaro patches, stock 5.18 has a few issues on Pinephone:
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# - no battery charging
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# - phone rotation sensor is off by 90 degrees
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# - ambient light sensor causes screen brightness to be shakey
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# - phosh greeter may not appear after wake from sleep
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boot.kernelPackages = pkgs.linuxPackagesFor pkgs.linux-megous;
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# alternatively, use nixos' kernel and add the stuff we want:
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# # cross-compilation optimization:
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# boot.kernelPackages =
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# let p = (import nixpkgs { localSystem = "x86_64-linux"; });
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# in p.pkgsCross.aarch64-multiplatform.linuxPackages_5_18;
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# # non-cross:
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# # boot.kernelPackages = pkgs.linuxPackages_5_18;
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# boot.kernelPatches = manjaroPatches ++ [
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# (patchDefconfig kernelConfig)
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# ];
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nixpkgs.hostPlatform.linux-kernel = {
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# defaults:
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name = "aarch64-multiplatform";
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baseConfig = "defconfig";
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DTB = true;
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autoModules = true;
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preferBuiltin = true;
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# extraConfig = ...
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# ^-- raspberry pi stuff: we don't need it.
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# target = "Image"; # <-- default
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target = "Image.gz"; # <-- compress the kernel image
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# target = "zImage"; # <-- confuses other parts of nixos :-(
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};
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}
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