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nixos/memtest: Allow user to specify memtest86+ boot parameters #1562

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nixos/memtest: Allow user to specify memtest86+ boot parameters #1562

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2 changes: 1 addition & 1 deletion nixos/modules/installer/cd-dvd/installation-cd-base.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,7 @@ with pkgs.lib;
isoImage.makeEfiBootable = true;

# Add Memtest86+ to the CD.
boot.loader.grub.memtest86 = true;
boot.loader.grub.memtest86.enable = true;

# Get a console as soon as the initrd loads fbcon on EFI boot
boot.initrd.kernelModules = [ "fbcon" ];
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41 changes: 32 additions & 9 deletions nixos/modules/system/boot/loader/grub/memtest.nix
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Expand Up @@ -6,28 +6,51 @@ with pkgs.lib;

let
memtest86 = pkgs.memtest86plus;
cfg = config.boot.loader.grub.memtest86;
params = concatStringsSep " " cfg.params;
in

{
options = {

boot.loader.grub.memtest86 = mkOption {
default = false;
type = types.bool;
description = ''
Make Memtest86+, a memory testing program, available from the
GRUB boot menu.
'';
boot.loader.grub.memtest86 = {

enable = mkOption {
default = false;
type = types.bool;
description = ''
Make Memtest86+, a memory testing program, available from the
GRUB boot menu.
'';
};

params = mkOption {
default = [];
example = [ "console=ttyS0,115200" ];
type = types.listOf types.str;
description = ''
Parameters added to the Memtest86+ command line. As of memtest86+ 5.01
the following list of (apparently undocumented) parameters are
accepted:
console=... -- set up a serial console.
btrace -- enable boot trace.
maxcpus=... -- limit number of CPUs.
onepass -- run one pass and exit if there are no errors.
tstlist=... -- list of tests to run.
cpumask=... -- set a CPU mask, to select CPUs to use for testing.
'';
};

};
};

config = mkIf config.boot.loader.grub.memtest86 {
config = mkIf cfg.enable {

boot.loader.grub.extraEntries =
if config.boot.loader.grub.version == 2 then
''
menuentry "Memtest86+" {
linux16 @bootRoot@/memtest.bin
linux16 @bootRoot@/memtest.bin ${params}
}
''
else
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