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# SPDX-License-Identifier: MIT
# SPDX-FileCopyrightText: 2021-2022 Alyssa Ross <hi@alyssa.is>
# SPDX-FileCopyrightText: 2021 Yureka <yuka@yuka.dev>
{ pkgs ? import <nixpkgs> {} }: with pkgs;
let
inherit (builtins) storeDir;
inherit (pkgs.lib) removePrefix;
eosimages = import ./eosimages.nix { inherit pkgs; };
installerPartUuid = "6e23b026-9f1e-479d-8a58-a0cda382e1ce";
installer = import ../installer {
inherit pkgs;
extraConfig = {
boot.initrd.availableKernelModules = [ "squashfs" ];
fileSystems.${storeDir} = {
device = "/dev/disk/by-partuuid/${installerPartUuid}";
};
};
};
rootfs = runCommand "installer.img" {
nativeBuildInputs = [ squashfs-tools-ng ];
} ''
sed 's,^${storeDir}/,,' ${writeReferencesToFile installer.store} |
tar -C ${storeDir} -c --verbatim-files-from -T - \
--owner 0 --group 0 | tar2sqfs $out
'';
grub = grub2_efi;
grubCfg = substituteAll {
src = ./grub.cfg.in;
linux = removePrefix storeDir installer.kernel;
initrd = removePrefix storeDir installer.initramfs;
inherit (installer) kernelParams;
};
esp = runCommand "esp.img" {
nativeBuildInputs = [ grub libfaketime dosfstools mtools ];
grubTargetDir = "${grub}/lib/grub/${grub.grubTarget}";
# Definition copied from util/grub-install-common.c.
# Last checked: GRUB 2.06
pkglib_DATA = [
"efiemu32.o" "efiemu64.o" "moddep.lst" "command.lst" "fs.lst" "partmap.lst"
"parttool.lst" "video.lst" "crypto.lst" "terminal.lst" "modinfo.sh"
];
passthru = { inherit grubCfg; };
} ''
truncate -s 15M $out
faketime "1970-01-01 00:00:00" mkfs.vfat -i 0x2178694e -n EFI $out
mmd -i $out ::/EFI ::/EFI/BOOT \
::/grub ::/grub/${grub.grubTarget} ::/grub/fonts
mcopy -i $out ${grubCfg} ::/grub/grub.cfg
mcopy -i $out $grubTargetDir/*.mod ::/grub/${grub.grubTarget}
for file in $pkglib_DATA; do
path="$grubTargetDir/$file"
! [ -e "$path" ] || mcopy -i $out "$path" ::/grub/${grub.grubTarget}
done
mcopy -i $out ${grub}/share/grub/unicode.pf2 ::/grub/fonts
grub-mkimage -o grubx64.efi -p "(hd0,gpt1)/grub" -O ${grub.grubTarget} part_gpt fat
mcopy -i $out grubx64.efi ::/EFI/BOOT/BOOTX64.EFI
fsck.vfat -n $out
'';
in
runCommand "spectrum-installer" {
nativeBuildInputs = [ grub jq util-linux systemdMinimal ];
passthru = { inherit esp installer eosimages; };
} ''
blockSize() {
wc -c "$1" | awk '{printf "%d\n", ($1 + 511) / 512}'
}
fillPartition() {
read start size < <(sfdisk -J "$1" | jq -r --argjson index "$2" \
'.partitiontable.partitions[$index] | "\(.start) \(.size)"')
dd if="$3" of="$1" seek="$start" count="$size" conv=notrunc
}
espSize="$(blockSize ${esp})"
installerSize="$(blockSize ${rootfs})"
eosimagesSize="$(blockSize ${eosimages})"
truncate -s $(((3 * 2048 + $espSize + $installerSize + $eosimagesSize) * 512)) $out
sfdisk $out <<EOF
label: gpt
size=$espSize, type=U
size=$installerSize, type=L, uuid=${installerPartUuid}
size=$eosimagesSize, type=56a3bbc3-aefa-43d9-a64d-7b3fd59bbc4e
EOF
fillPartition $out 0 ${esp}
fillPartition $out 1 ${rootfs}
fillPartition $out 2 ${eosimages}
''
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