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cleanup files and add AIO image

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This commit is contained in:
Jeeves 2024-11-29 06:19:46 -07:00
parent c436983153
commit 022ceeb8aa
9 changed files with 90 additions and 114 deletions
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57
nixos/default.nix
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@ -21,9 +21,10 @@
description = "Compress the resulting image with zstd.";
};
# TODO this is unnecessary. just make the partition big enough to fit the boot files automatically.
bootPartitionSize = mkOption {
type = types.int;
default = 128;
default = 64;
description = "Size of the boot partition, in mebibytes (1024x1024 bytes).";
};
@ -57,6 +58,9 @@
};
config = let cfg = config.ps4; in lib.mkIf cfg.enable {
# TODO write definitions for the other southbridges
boot.kernelPackages = pkgs.recurseIntoAttrs (pkgs.linuxPackagesFor (pkgs.callPackage ../kernel/kernel-aeolia-5.3.nix {}));
fileSystems = {
"/boot" = {
device = "/dev/disk/by-label/${cfg.usbImage.bootPartitionLabel}";
@ -70,6 +74,7 @@
};
boot.loader.grub.enable = lib.mkForce false;
boot.loader.initScript.enable = lib.mkForce true;
# from https://github.com/NixOS/nixpkgs/blob/e405f30513169feedb64b5c25e7b00242010af58/nixos/modules/installer/sd-card/sd-image.nix#L267
boot.postBootCommands = let
@ -107,7 +112,7 @@
fi
'';
system.build.rootFileSystem = pkgs.callPackage (modulesPath + "/../lib/make-ext4-fs.nix") {
system.build.rootfsImage = pkgs.callPackage (modulesPath + "/../lib/make-ext4-fs.nix") {
storePaths = [ config.system.build.toplevel ];
volumeLabel = cfg.usbImage.rootPartitionLabel;
populateImageCommands = ''
@ -115,5 +120,53 @@
touch ./files/firstboot
'';
};
# slightly modified version of https://github.com/NixOS/nixpkgs/blob/e405f30513169feedb64b5c25e7b00242010af58/nixos/modules/installer/sd-card/sd-image.nix#L182
system.build.usbImage = pkgs.stdenv.mkDerivation {
name = cfg.usbImage.imageName;
nativeBuildInputs = with pkgs; [ dosfstools parted mtools e2fsprogs util-linux ]
++ lib.optional cfg.usbImage.compressImage zstd;
inherit (cfg.usbImage) compressImage;
buildCommand = ''
# mkdir -p $out/usb-image
img=$out
rootfs=${config.system.build.rootfsImage}
# Create the image to fit rootfs + bootfs + 1 MiB
rootfsSizeBlocks=$(du -B 512 --apparent-size $rootfs | awk '{ print $1 }')
bootfsSizeBlocks=$((${toString cfg.usbImage.bootPartitionSize} * 1024 * 1024 / 512))
imageSize=$((rootfsSizeBlocks * 512 + bootfsSizeBlocks * 512 + 1 * 1024 * 1024))
truncate -s $imageSize $img
# Partition the image
parted -s $img -- mklabel msdos
parted -s $img -- mkpart primary fat32 1M ${toString (cfg.usbImage.bootPartitionSize + 1)}M
parted -s $img -- mkpart primary ext4 ${toString (cfg.usbImage.bootPartitionSize + 1)}M 100%
# Copy the rootfs to the image
eval $(partx $img -o START,SECTORS --nr 2 --pairs)
dd conv=notrunc if=$rootfs of=$img seek=$START count=$SECTORS
# Create a temporary image for the boot partition
eval $(partx $img -o START,SECTORS --nr 1 --pairs)
truncate -s $((SECTORS * 512)) boot.img
mkfs.vfat -F 32 -n ${cfg.usbImage.bootPartitionLabel} boot.img
# Copy the files that the PS4 Linux Loader payload expects to the boot partition
mcopy -i boot.img ${config.system.build.kernel}/bzImage ::/bzImage
mcopy -i boot.img ${config.system.build.initialRamdisk}/initrd.gz ::/initramfs.cpio.gz
# Verify the boot partition before copying it
fsck.vfat -vn boot.img
dd conv=notrunc if=boot.img of=$img seek=$START count=$SECTORS
if test -n "$compressImage"; then
zstd -T$NIX_BUILD_CORES --rm $img
fi
'';
};
};
}