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nomicon/infra/corenix/modules/grub2/default.nix

133 lines
3.5 KiB

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.grub2;
payloadName =
if cfg.asSecondaryPayload then "img/grub2" else "fallback/payload";
configText = (readFile ./files/grub.cfg) + cfg.extraConfig
+ (optionalString (cfg.signKey != null) ''
trust (cbfsdisk)/etc/trusted.key
set check_signatures=enforce
'') + (optionalString (cfg.scanDevices) (readFile ./files/grub-scan.cfg))
+ (optionalString (cfg.users != { }) ((concatStringsSep "\n" (mapAttrsToList
(n: u: ''
${
if u.passwordIsHashed then "password_pbkdf2" else "password"
} ${n} ${u.password}
'') cfg.users)) + ''
set superusers="${
concatStringsSep " "
(attrNames (filterAttrs (n: u: u.superuser) cfg.users))
}"
export superusers
'')) + (optionalString cfg.generateSecondaryPayloadEntries
(concatMapStrings (n: ''
menuentry '${removePrefix "img/" n}' {
chainloader (cbfsdisk)/${n}
}
'') (filter (hasPrefix "img/") (attrNames config.corenix.extraFiles))));
userOpts = { ... }: {
options = {
superuser = mkOption {
type = types.bool;
default = true;
};
password = mkOption { type = types.str; };
passwordIsHashed = mkOption {
type = types.bool;
default = true;
};
};
};
in {
options.grub2 = {
enable = mkEnableOption "grub2 coreboot primary payload";
asSecondaryPayload = mkOption {
type = types.bool;
default = false;
};
generateSecondaryPayloadEntries = mkOption {
type = types.bool;
default = true;
};
scanDevices = mkOption {
type = types.bool;
default = true;
description = ''
Scan internal and external storage devices for GRUB2/syslinux/isolinux/NetBSD
configs and at runtime and create boot entries for each of them.
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
};
configFile = mkOption { type = types.path; };
users = mkOption {
type = types.attrsOf (types.submodule userOpts);
default = { };
};
font = mkOption {
type = types.path;
default = "${pkgs.unifont}/share/fonts/truetype/unifont.ttf";
example = "${pkgs.dejavu_fonts}/share/fonts/truetype/DejaVuSansMono.ttf";
};
package = mkOption {
type = types.package;
default = pkgs.coreboot-payload-grub2;
};
signKey = mkOption {
type = types.nullOr types.path;
default = null;
};
extraPayloadModules = mkOption {
type = types.listOf types.str;
default = [ ];
};
};
config = mkIf cfg.enable {
grub2.configFile = pkgs.writeText "grub.cfg" configText;
grub2.extraPayloadModules = [
"png"
"gfxmenu"
"gfxterm_background"
"ls"
"cat"
"echo"
"linux"
"xfs"
"bsd"
];
corenix.extraFiles = {
${payloadName} = {
type = "payload";
src = "${
cfg.package.override { inherit (cfg) extraPayloadModules; }
}/default_payload.elf";
};
"font.pf2".src =
(pkgs.runCommand "font.pf2" { buildInputs = with pkgs; [ grub2 ]; }
"grub-mkfont --range=0x20-0x7E,0x2501-0x251F,0x2191-0x2193 --size=14 -o $out ${cfg.font}");
"etc/grub.cfg".src = cfg.configFile;
"background.png".src = ./files/background.png;
} // (optionalAttrs (cfg.signKey != null) {
"etc/trusted.key".src = cfg.signKey;
});
};
}