144 lines
3.9 KiB
Nix
144 lines
3.9 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.boot.loader.systemd-boot;
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efi = config.boot.loader.efi;
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gummibootBuilder = pkgs.substituteAll {
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src = ./systemd-boot-builder.py;
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isExecutable = true;
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inherit (pkgs) python3;
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systemd = config.systemd.package;
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nix = config.nix.package.out;
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timeout = if config.boot.loader.timeout != null then config.boot.loader.timeout else "";
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editor = if cfg.editor then "True" else "False";
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configurationLimit = if cfg.configurationLimit == null then 0 else cfg.configurationLimit;
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inherit (cfg) consoleMode;
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inherit (efi) efiSysMountPoint canTouchEfiVariables;
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memtest86 = if cfg.memtest86.enable then pkgs.memtest86-efi else "";
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};
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in {
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imports =
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[ (mkRenamedOptionModule [ "boot" "loader" "gummiboot" "enable" ] [ "boot" "loader" "systemd-boot" "enable" ])
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];
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options.boot.loader.systemd-boot = {
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enable = mkOption {
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default = false;
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type = types.bool;
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description = "Whether to enable the systemd-boot (formerly gummiboot) EFI boot manager";
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};
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editor = mkOption {
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default = true;
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type = types.bool;
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description = ''
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Whether to allow editing the kernel command-line before
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boot. It is recommended to set this to false, as it allows
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gaining root access by passing init=/bin/sh as a kernel
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parameter. However, it is enabled by default for backwards
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compatibility.
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'';
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};
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configurationLimit = mkOption {
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default = null;
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example = 120;
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type = types.nullOr types.int;
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description = ''
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Maximum number of latest generations in the boot menu.
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Useful to prevent boot partition running out of disk space.
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<literal>null</literal> means no limit i.e. all generations
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that were not garbage collected yet.
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'';
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};
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consoleMode = mkOption {
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default = "keep";
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type = types.enum [ "0" "1" "2" "auto" "max" "keep" ];
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description = ''
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The resolution of the console. The following values are valid:
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<itemizedlist>
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<listitem><para>
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<literal>"0"</literal>: Standard UEFI 80x25 mode
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</para></listitem>
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<listitem><para>
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<literal>"1"</literal>: 80x50 mode, not supported by all devices
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</para></listitem>
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<listitem><para>
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<literal>"2"</literal>: The first non-standard mode provided by the device firmware, if any
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</para></listitem>
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<listitem><para>
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<literal>"auto"</literal>: Pick a suitable mode automatically using heuristics
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</para></listitem>
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<listitem><para>
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<literal>"max"</literal>: Pick the highest-numbered available mode
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</para></listitem>
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<listitem><para>
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<literal>"keep"</literal>: Keep the mode selected by firmware (the default)
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</para></listitem>
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</itemizedlist>
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'';
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};
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memtest86 = {
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enable = mkOption {
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default = false;
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type = types.bool;
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description = ''
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Make MemTest86 available from the systemd-boot menu. MemTest86 is a
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program for testing memory. MemTest86 is an unfree program, so
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this requires <literal>allowUnfree</literal> to be set to
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<literal>true</literal>.
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'';
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};
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};
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};
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config = mkIf cfg.enable {
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assertions = [
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{
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assertion = (config.boot.kernelPackages.kernel.features or { efiBootStub = true; }) ? efiBootStub;
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message = "This kernel does not support the EFI boot stub";
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}
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];
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boot.loader.grub.enable = mkDefault false;
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boot.loader.supportsInitrdSecrets = true;
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system = {
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build.installBootLoader = gummibootBuilder;
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boot.loader.id = "systemd-boot";
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requiredKernelConfig = with config.lib.kernelConfig; [
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(isYes "EFI_STUB")
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];
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};
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};
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}
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