86 lines
2.2 KiB
Nix
86 lines
2.2 KiB
Nix
{ hostRegistry, config, pkgs, lib, ... }:
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{
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boot = {
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loader.raspberryPi = {
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enable = true;
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version = 4;
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firmwareConfig = lib.mkDefault ''
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gpu_mem=256
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dtparam=audio=on
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# disable uart, enable bluetooth
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enable_uart=0
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'';
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};
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# linuxPackages_latest doesn't boot
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# FIXME: needs u-boot or .dtb?
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kernelPackages = pkgs.linuxPackages_latest;
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kernelParams = [
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"verbose" "shell_on_fail"
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"elevator=deadline"
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];
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initrd = {
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network = {
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enable = true;
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flushBeforeStage2 = false;
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};
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supportedFilesystems = lib.mkForce [
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"nfs"
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];
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includeDefaultModules = false;
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availableKernelModules = [
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"genet"
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"usbhid"
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];
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};
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tmpOnTmpfs = true;
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};
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fileSystems."/nix/store" = {
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device = "${hostRegistry.hosts.nix-build.ip4}:/nix/store";
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fsType = "nfs";
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options = [ "nfsvers=3" "proto=tcp" "nolock" "hard" "async" "ro" ];
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neededForBoot = true;
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};
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hardware.deviceTree.enable = true;
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environment.systemPackages = with pkgs; [
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libraspberrypi
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raspberrypi-eeprom
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];
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systemd = {
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# r/o /nix/store
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services.nix-daemon.enable = false;
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sockets.nix-daemon.enable = false;
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services.nix-gc.enable = false;
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};
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nix.gc.automatic = lib.mkForce false;
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services.journald.extraConfig = ''
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Storage=volatile
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'';
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system.build.tftproot = pkgs.runCommand "tftproot-${config.networking.hostName}" {} ''
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mkdir -p $out
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cp -rs ${pkgs.raspberrypifw}/share/raspberrypi/boot/* $out/
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ln -sf ${config.system.build.kernel}/Image $out/kernel8.img
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ln -sf ${config.system.build.initialRamdisk}/initrd $out/initrd.img
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chmod u+w $out/overlays
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rm -fr $out/*.dtb $out/overlays
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for f in $(find ${config.hardware.deviceTree.package}/ -name \*.dtb) ; do
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ln -s $f $out/
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done
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cat << EOF > $out/config.txt
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kernel=kernel8.img
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initramfs initrd.img followkernel
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arm_64bit=1
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${toString config.boot.loader.raspberryPi.firmwareConfig}
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EOF
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echo "dwc_otg.lpm_enable=0 init=${config.system.build.toplevel}/init ${toString config.boot.kernelParams}" > $out/cmdline.txt
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'';
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}
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