liminix-fork/modules/jffs2.nix
2023-05-19 23:57:50 +01:00

43 lines
1.2 KiB
Nix

{
config
, pkgs
, lib
, ...
}:
let
inherit (lib) mkIf;
in
{
imports = [
./initramfs.nix
];
config = mkIf (config.rootfsType == "jffs2") {
kernel.config = {
JFFS2_FS = "y";
JFFS2_LZO = "y";
JFFS2_RTIME = "y";
JFFS2_COMPRESSION_OPTIONS = "y";
JFFS2_ZLIB = "y";
JFFS2_CMODE_SIZE = "y";
};
boot.initramfs.enable = true;
outputs = rec {
systemConfiguration =
pkgs.systemconfig config.filesystem.contents;
rootfs =
let
inherit (pkgs.pkgsBuildBuild) runCommand mtdutils;
endian = if pkgs.stdenv.isBigEndian
then "--big-endian" else "--little-endian";
in runCommand "make-jffs2" {
depsBuildBuild = [ mtdutils ];
} ''
mkdir -p $TMPDIR/empty/nix/store/
cp ${systemConfiguration}/bin/activate $TMPDIR/empty/activate
ln -s ${pkgs.s6-init-bin}/bin/init $TMPDIR/empty/init
grafts=$(sed < ${systemConfiguration}/etc/nix-store-paths 's/^\(.*\)$/--graft \1:\1/g')
mkfs.jffs2 --compression-mode=size ${endian} -e ${config.hardware.flash.eraseBlockSize} --enable-compressor=lzo --pad --root $TMPDIR/empty --output $out $grafts --squash --faketime
'';
};
};
}