158 lines
4.5 KiB
Nix
158 lines
4.5 KiB
Nix
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{ config, pkgs, lib, modulesPath, ... }:
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with lib;
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let localPackages = pkgs.buildPackages;
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in {
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options.genode = {
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core = {
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prefix = mkOption {
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type = types.str;
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example = "hw-pc-";
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};
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supportedSystems = mkOption {
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type = types.listOf types.str;
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example = [ "i686-genode" "x86_64-genode" ];
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};
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basePackages = mkOption { type = types.listOf types.package; };
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};
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boot = {
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kernel = mkOption {
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type = types.path;
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default = "${pkgs.genodePackages.bender}/bender";
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};
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initrd = mkOption {
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type = types.str;
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default = "${pkgs.genodePackages.bender}/bender";
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description = "Path to an image or a command-line arguments";
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};
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configFile = mkOption {
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type = types.path;
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description = ''
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Dhall boot configuration. See
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https://git.sr.ht/~ehmry/dhall-genode/tree/master/Boot/package.dhall
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'';
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};
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image = mkOption {
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type = types.path;
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description =
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"Boot image containing the base component binaries and configuration.";
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};
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romModules = mkOption {
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type = types.attrsOf types.path;
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description = "Attr set of initial ROM modules";
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};
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};
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};
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config = let
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initInputs = unique config.genode.init.inputs;
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addManifest = drv:
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drv // {
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manifest =
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localPackages.runCommand "${drv.name}.dhall" { inherit drv; } ''
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set -eu
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echo -n '[' >> $out
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find $drv/ -type f -printf ',{mapKey= "%f",mapValue="%p"}' >> $out
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${if builtins.elem "lib" drv.outputs then
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''
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find ${drv.lib}/ -type f -printf ',{mapKey= "%f",mapValue="%p"}' >> $out''
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else
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""}
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echo -n ']' >> $out
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'';
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};
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mergeManifests = inputs:
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localPackages.writeTextFile {
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name = "manifest.dhall";
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text = with builtins;
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let
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f = head: input:
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if hasAttr "manifest" input then
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''
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${head}, { mapKey = "${
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lib.getName input
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}", mapValue = ${input.manifest} }''
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else
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abort "${input.pname} does not have a manifest";
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in (foldl' f "[" inputs) + "]";
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};
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in {
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assertions = [{
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assertion = builtins.any (s: s == config.nixpkgs.system)
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config.genode.core.supportedSystems;
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message = "invalid Genode core for this system";
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}];
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genode.boot.configFile = let
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tarball =
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"${config.system.build.tarball}/tarball/${config.system.build.tarball.fileName}.tar";
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manifest = mergeManifests (map addManifest
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(config.genode.core.basePackages ++ [ config.system.build.tarball ]
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++ (with pkgs.genodePackages; [ init cached_fs_rom vfs ])));
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in localPackages.runCommand "boot.dhall" { } ''
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cat > $out << EOF
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${./store-wrapper.dhall}
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(${config.genode.init.configFile})
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"${config.system.build.tarball.fileName}.tar"
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$(stat --format '%s' ${tarball})
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${config.system.build.storeManifest} ${manifest}
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EOF
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'';
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system.build.storeManifest = mergeManifests (map addManifest initInputs);
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# Create the tarball of the store to live in core ROM
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system.build.tarball =
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pkgs.callPackage "${modulesPath}/../lib/make-system-tarball.nix" {
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contents = [ ];
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storeContents = [
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{
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# assume that the init config will depend
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# on every store path needed to boot
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object = config.genode.init.configFile;
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symlink = "/config.dhall";
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}
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{
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object = pkgs.buildPackages.symlinkJoin {
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name = config.system.name + ".rom";
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paths = config.genode.init.inputs;
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};
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symlink = "/rom";
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}
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];
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compressCommand = "cat";
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compressionExtension = "";
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};
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system.build.initXml = pkgs.buildPackages.runCommand "init.xml" {
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nativeBuildInputs = with pkgs.buildPackages; [ dhall xorg.lndir ];
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DHALL_GENODE = "${pkgs.genodePackages.dhallGenode}/binary.dhall";
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BOOT_CONFIG = config.genode.boot.configFile;
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} ''
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export XDG_CACHE_HOME=$NIX_BUILD_TOP
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lndir -silent \
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${pkgs.genodePackages.dhallGenode}/.cache \
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$XDG_CACHE_HOME
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dhall text <<< "(env:DHALL_GENODE).Init.render (env:BOOT_CONFIG).config" > $out
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'';
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};
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}
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