liminix/modules/outputs/diskimage.nix

52 lines
1.5 KiB
Nix

{
config
, pkgs
, lib
, ...
}:
let
inherit (lib) mkOption types concatStringsSep;
o = config.system.outputs;
phram_address = lib.toHexString (config.hardware.ram.startAddress + 256 * 1024 * 1024);
in {
# imports = [ ./flashimage.nix ];
options.system.outputs = {
diskimage = mkOption {
type = types.package;
description = ''
diskimage
*********
This creates a disk image file with a partition table containing
the contents of ``outputs.rootfs`` as its only partition.
'';
};
vmdisk = mkOption { type = types.package; };
};
config = {
system.outputs = {
diskimage =
let
o = config.system.outputs;
in pkgs.runCommand "diskimage" {
depsBuildBuild = [ pkgs.pkgsBuildBuild.util-linux ];
} ''
# leave 4 sectors at start for partition table
# and alignment to 2048 bytes (does that help?)
dd if=${o.rootfs} of=$out bs=512 seek=4 conv=sync
echo '4,-,L,*' | sfdisk $out
'';
vmdisk = pkgs.runCommand "vmdisk" {} ''
mkdir $out
cd $out
ln -s ${o.diskimage} ./diskimage
cat > run.sh <<EOF
#!${pkgs.runtimeShell}
${pkgs.pkgsBuildBuild.run-liminix-vm}/bin/run-liminix-vm --arch ${pkgs.stdenv.hostPlatform.qemuArch} --u-boot ${pkgs.ubootQemuArm}/u-boot.bin --phram-address 0x${phram_address} --disk-image ${o.diskimage} /dev/null /dev/null
EOF
chmod +x run.sh
'';
};
};
}