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chore: undo dtparams, improve kernel building code
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adminy
parent
aa99f3a2dd
commit
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5 changed files with 93 additions and 73 deletions
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@ -7,66 +7,70 @@
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}:
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final: prev:
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let
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# The version to stick at `pkgs.rpi-kernels.latest_bcm271x'
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latest = "v6_6_34";
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kernel-config = board: {
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inherit board;
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version = builtins.replaceStrings ["v" "_"] ["" "."] latest;
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kernel = rpi-linux-6_6-src;
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fw = rpi-firmware-src;
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wireless-fw = import ./raspberrypi-wireless-firmware.nix {
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bluez-firmware = rpi-bluez-firmware-src;
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firmware-nonfree = rpi-firmware-nonfree-src;
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};
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argsOverride = {
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structuredExtraConfig = with prev.lib.kernel; {
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# The perl script to generate kernel options sets unspecified
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# parameters to `m` if possible [1]. This results in the
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# unspecified config option KUNIT [2] getting set to `m` which
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# causes DRM_VC4_KUNIT_TEST [3] to get set to `y`.
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#
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# This vc4 unit test fails on boot due to a null pointer
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# exception with the existing config. I'm not sure why, but in
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# any case, the DRM_VC4_KUNIT_TEST config option itself states
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# that it is only useful for kernel developers working on the
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# vc4 driver. So, I feel no need to deviate from the standard
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# rpi kernel and attempt to successfully enable this test and
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# other unit tests because the nixos perl script has this
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# sloppy "default to m" behavior. So, I set KUNIT to `n`.
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#
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# [1] https://github.com/NixOS/nixpkgs/blob/85bcb95aa83be667e562e781e9d186c57a07d757/pkgs/os-specific/linux/kernel/generate-config.pl#L1-L10
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# [2] https://github.com/raspberrypi/linux/blob/1.20230405/lib/kunit/Kconfig#L5-L14
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# [3] https://github.com/raspberrypi/linux/blob/bb63dc31e48948bc2649357758c7a152210109c4/drivers/gpu/drm/vc4/Kconfig#L38-L52
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KUNIT = no;
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GPIO_PWM = no;
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};
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};
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versions = {
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v6_6_31 = rpi-linux-6_6-src;
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};
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boards = [ "bcmrpi" "bcm2709" "bcmrpi3" "bcm2711" "bcm2712" ];
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# Helpers for building the `pkgs.rpi-kernels' map.
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rpi-kernel = { kernel, version, fw, wireless-fw, argsOverride ? null, board }:
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let
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new-kernel = prev.linux_rpi4.override {
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argsOverride = {
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src = kernel;
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inherit version;
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modDirVersion = version;
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kernelPatches = [];
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defconfig = "${board}_defconfig";
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postFixup = "";
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} // (if builtins.isNull argsOverride then { } else argsOverride);
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};
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new-fw = prev.raspberrypifw.overrideAttrs (oldfw: { src = fw; });
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new-wireless-fw = final.callPackage wireless-fw { };
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in
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{
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"latest_${board}" = {
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kernel = new-kernel;
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firmware = new-fw;
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wireless-firmware = new-wireless-fw;
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};
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};
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rpi-kernel = { version, board }: {
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"${version}"."${board}" = prev.lib.overrideDerivation (prev.buildLinux {
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modDirVersion = version;
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inherit version;
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pname = "linux-rpi";
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src = versions[version];
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defconfig = "${board}_defconfig";
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structuredExtraConfig = with lib.kernel; {
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# Workaround https://github.com/raspberrypi/linux/issues/6198
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# Needed because NixOS 24.05+ sets DRM_SIMPLEDRM=y which pulls in
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# DRM_KMS_HELPER=y.
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BACKLIGHT_CLASS_DEVICE = yes;
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# The perl script to generate kernel options sets unspecified
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# parameters to `m` if possible [1]. This results in the
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# unspecified config option KUNIT [2] getting set to `m` which
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# causes DRM_VC4_KUNIT_TEST [3] to get set to `y`.
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#
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# This vc4 unit test fails on boot due to a null pointer
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# exception with the existing config. I'm not sure why, but in
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# any case, the DRM_VC4_KUNIT_TEST config option itself states
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# that it is only useful for kernel developers working on the
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# vc4 driver. So, I feel no need to deviate from the standard
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# rpi kernel and attempt to successfully enable this test and
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# other unit tests because the nixos perl script has this
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# sloppy "default to m" behavior. So, I set KUNIT to `n`.
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#
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# [1] https://github.com/NixOS/nixpkgs/blob/85bcb95aa83be667e562e781e9d186c57a07d757/pkgs/os-specific/linux/kernel/generate-config.pl#L1-L10
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# [2] https://github.com/raspberrypi/linux/blob/1.20230405/lib/kunit/Kconfig#L5-L14
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# [3] https://github.com/raspberrypi/linux/blob/bb63dc31e48948bc2649357758c7a152210109c4/drivers/gpu/drm/vc4/Kconfig#L38-L52
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KUNIT = no;
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};
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features.efiBootStub = false;
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postConfigure = ''
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# The v7 defconfig has this set to '-v7' which screws up our modDirVersion.
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sed -i $buildRoot/.config -e 's/^CONFIG_LOCALVERSION=.*/CONFIG_LOCALVERSION=""/'
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sed -i $buildRoot/include/config/auto.conf -e 's/^CONFIG_LOCALVERSION=.*/CONFIG_LOCALVERSION=""/'
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'';
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postFixup = "";
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kernelPatches = [
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# Fix compilation errors due to incomplete patch backport.
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# https://github.com/raspberrypi/linux/pull/6223
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{
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name = "gpio-pwm_-_pwm_apply_might_sleep.patch";
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patch = fetchpatch {
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url = "https://github.com/peat-psuwit/rpi-linux/commit/879f34b88c60dd59765caa30576cb5bfb8e73c56.patch";
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hash = "sha256-HlOkM9EFmlzOebCGoj7lNV5hc0wMjhaBFFZvaRCI0lI=";
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};
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}
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{
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name = "ir-rx51_-_pwm_apply_might_sleep.patch";
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patch = fetchpatch {
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url = "https://github.com/peat-psuwit/rpi-linux/commit/23431052d2dce8084b72e399fce82b05d86b847f.patch";
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hash = "sha256-UDX/BJCJG0WVndP/6PbPK+AZsfU3vVxDCrpn1kb1kqE=";
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};
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}
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];
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});
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};
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rpi-kernels = builtins.foldl' (b: a: b // rpi-kernel a) { };
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in
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{
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@ -80,7 +84,7 @@ in
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defconfig = "rpi_arm64_defconfig";
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extraMeta.platforms = [ "aarch64-linux" ];
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filesToInstall = [ "u-boot.bin" ];
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version = "2024.07-rc4";
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version = "2024.04";
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patches = [ ];
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makeFlags = [ ];
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src = u-boot-src;
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@ -97,16 +101,22 @@ in
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};
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# default to latest firmware
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raspberrypiWirelessFirmware = final.rpi-kernels.latest_bcm2712.wireless-firmware;
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raspberrypifw = final.rpi-kernels.latest_bcm2712.firmware;
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raspberrypiWirelessFirmware = final.callPackage (
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import ./raspberrypi-wireless-firmware.nix {
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bluez-firmware = rpi-bluez-firmware-src;
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firmware-nonfree = rpi-firmware-nonfree-src;
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}
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) { };
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raspberrypifw = prev.raspberrypifw.overrideAttrs (oldfw: { src = rpi-firmware-src; });
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} // {
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# rpi kernels and firmware are available at
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# `pkgs.rpi-kernels.<VERSION>_<BOARD>.{kernel,firmware,wireless-firmware}'.
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# `pkgs.rpi-kernels.<VERSION>.<BOARD>'.
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#
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# For example: `pkgs.rpi-kernels.latest_bcm2712.kernel'
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rpi-kernels = rpi-kernels [
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(kernel-config "bcm2711")
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(kernel-config "bcm2712")
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];
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# For example: `pkgs.rpi-kernels.v6_6_31.bcm2712'
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rpi-kernels = rpi-kernels (
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prev.lib.lists.crossLists
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(board: version: { inherit board version; })
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[boards (builtins.attrNames versions)]
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);
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}
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