liminix/modules/outputs/extlinux.nix
Daniel Barlow 4229b42d82 make config.hardware.dts.src nullable
This is for QEMU where we won't have to provide a dtb because the
device tree is built by the platform according the (emulated) hardware
present.

Maybe in future there will be other hardware devices where we
don't need to provide a dtb.
2023-12-09 15:51:30 +00:00

39 lines
1 KiB
Nix

{
config
, pkgs
, lib
, ...
}:
let
inherit (lib) mkIf mkEnableOption mkOption types concatStringsSep;
cfg = config.boot.loader.extlinux;
o = config.system.outputs;
cmdline = concatStringsSep " " config.boot.commandLine;
wantsDtb = config.hardware.dts ? src && config.hardware.dts.src != null;
in {
options.system.outputs.extlinux = mkOption {
type = types.package;
# description = "";
};
options.boot.loader.extlinux.enable = mkEnableOption "extlinux";
config = { # mkIf cfg.enable {
system.outputs.extlinux = pkgs.runCommand "extlinux" {} ''
mkdir $out
cd $out
${if wantsDtb then "cp ${o.dtb} dtb" else "true"}
cp ${o.initramfs} initramfs
cp ${o.zimage} kernel
mkdir extlinux
cat > extlinux/extlinux.conf << _EOF
menu title Liminix
timeout 100
label Liminix
kernel /boot/kernel
# initrd /boot/initramfs
append ${cmdline} root=/dev/vda1
${if wantsDtb then "fdt /boot/dtb" else ""}
_EOF
'';
};
}