diff options
Diffstat (limited to 'nixos/modules/apple-silicon-support/packages/linux-asahi/default.nix')
| -rw-r--r-- | nixos/modules/apple-silicon-support/packages/linux-asahi/default.nix | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/nixos/modules/apple-silicon-support/packages/linux-asahi/default.nix b/nixos/modules/apple-silicon-support/packages/linux-asahi/default.nix new file mode 100644 index 0000000..4f00f3b --- /dev/null +++ b/nixos/modules/apple-silicon-support/packages/linux-asahi/default.nix @@ -0,0 +1,118 @@ +{ lib +, pkgs +, callPackage +, writeShellScriptBin +, writeText +, linuxPackagesFor +, _4KBuild ? false +, withRust ? false +, kernelPatches ? [ ] +}: + +let + # TODO: use a pure nix regex parser instead of an IFD, and remove this workaround + localPkgs = if builtins ? currentSystem + then import (pkgs.path) { + crossSystem.system = builtins.currentSystem; + localSystem.system = builtins.currentSystem; + } + else pkgs; + + inherit (localPkgs) runCommand; + + parseExtraConfig = cfg: let + lines = builtins.filter (s: s != "") (lib.strings.splitString "\n" cfg); + perLine = line: let + kv = lib.strings.splitString " " line; + in assert (builtins.length kv == 2); + "CONFIG_${builtins.elemAt kv 0}=${builtins.elemAt kv 1}"; + in lib.strings.concatMapStringsSep "\n" perLine lines; + + readConfig = configfile: import (runCommand "config.nix" { } '' + echo "{ } // " > "$out" + while IFS='=' read key val; do + [ "x''${key#CONFIG_}" != "x$key" ] || continue + no_firstquote="''${val#\"}"; + echo '{ "'"$key"'" = "'"''${no_firstquote%\"}"'"; } //' >> "$out" + done < "${configfile}" + echo "{ }" >> $out + '').outPath; + + linux-asahi-pkg = { stdenv, lib, fetchFromGitHub, fetchpatch, linuxKernel, + rustPlatform, rustfmt, rust-bindgen, ... } @ args: + let + configfile = if kernelPatches == [ ] then ./config else + writeText "config" '' + ${builtins.readFile ./config} + + # Patches + ${lib.strings.concatMapStringsSep "\n" ({extraConfig ? "", ...}: parseExtraConfig extraConfig) kernelPatches} + ''; + + _kernelPatches = kernelPatches; + in + (linuxKernel.manualConfig rec { + inherit stdenv lib; + + version = "6.1.0-asahi"; + modDirVersion = version; + + src = fetchFromGitHub { + # tracking: https://github.com/AsahiLinux/PKGBUILDs/blob/stable/linux-asahi/PKGBUILD + owner = "AsahiLinux"; + repo = "linux"; + rev = "asahi-6.1-2"; + hash = "sha256-grQytmYoAlPxRI8mYQjZFduD3BH7PA7rz1hyInJb4JA="; + }; + + kernelPatches = [ + ] ++ lib.optionals _4KBuild [ + # thanks to Sven Peter + # https://lore.kernel.org/linux-iommu/20211019163737.46269-1-sven@svenpeter.dev/ + { name = "sven-iommu-4k"; + patch = ./sven-iommu-4k.patch; + } + ] ++ lib.optionals (!_4KBuild) [ + # patch the kernel to set the default size to 16k instead of modifying + # the config so we don't need to convert our config to the nixos + # infrastructure or patch it and thus introduce a dependency on the host + # system architecture + { name = "default-pagesize-16k"; + patch = ./default-pagesize-16k.patch; + } + ] ++ _kernelPatches; + + inherit configfile; + config = readConfig configfile; + + extraMeta.branch = "6.1"; + } // (args.argsOverride or {})).overrideAttrs (old: if withRust then { + nativeBuildInputs = (old.nativeBuildInputs or []) ++ [ + rust-bindgen + rustfmt + # rustc 1.66.x has problems relating to the sad old aarch64 GCC9. + # we need it to pass -lgcc to gcc through the nix machinery but only when rustc + # is running, so we give the kernel build a rustc that wraps the real rustc + # while setting the appropriate environment variable during its execution. + # https://github.com/NixOS/nixpkgs/pull/209113 + (writeShellScriptBin "rustc" '' + NIX_LDFLAGS=-lgcc ${rustPlatform.rust.rustc}/bin/rustc "$@" + '') + ]; + RUST_LIB_SRC = rustPlatform.rustLibSrc; + + preConfigure = '' + # Fixes for Rust 1.66.x + sed -i -e 's/rustc_allocator_nounwind/rustc_nounwind/g' rust/alloc/alloc.rs + sed -i -e 's/const Unpin/Unpin/' rust/alloc/boxed.rs + sed -i -e '/^pub unsafe trait RawDeviceId/i #[const_trait]' rust/kernel/driver.rs + + # Fixes for rust-bindgen 0.63.0 + sed -i -e 's/blacklist/blocklist/g' rust/Makefile + sed -i -e 's/whitelist/allowlist/g' rust/Makefile + ''; + } else {}); + + linux-asahi = (callPackage linux-asahi-pkg { }); +in lib.recurseIntoAttrs (linuxPackagesFor linux-asahi) + |