firmware: Working Pi 3 firmware
This commit is contained in:
parent
8c9e57f97b
commit
336c4267c8
@ -1 +1,2 @@
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watch_file default.nix
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use flake ..#firmware --override-input rootdir "file+file://"<(printf %s "$PWD")
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1
firmware/.gitignore
vendored
1
firmware/.gitignore
vendored
@ -1 +1,2 @@
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/result
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/*.img
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1
firmware/.keys/.gitignore
vendored
Normal file
1
firmware/.keys/.gitignore
vendored
Normal file
@ -0,0 +1 @@
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/*.key
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1
firmware/.keys/management.pub
Normal file
1
firmware/.keys/management.pub
Normal file
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ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINd+aujm9F06jaQIAvk/0ptQNDHp57J429SqIquVmhbh qclk-management
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@ -1,19 +1,85 @@
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{ lib, ... }:
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{ lib, pkgs, ... }:
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let
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inherit (lib) mkOption;
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in
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{
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options.my.build = {
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image = mkOption {
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description = "Final output image for distribution.";
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type = lib.types.unspecified;
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};
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};
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config = {
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system = {
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stateVersion = "24.11";
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nixos = {
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distroName = "qCLKOS";
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};
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name = "qclk";
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};
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documentation.nixos.enable = false;
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time.timeZone = "Europe/Dublin";
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i18n.defaultLocale = "en_IE.UTF-8";
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boot = {
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loader = {
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grub.enable = false;
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};
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initrd = {
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systemd = {
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enable = true;
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emergencyAccess = true;
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};
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};
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consoleLogLevel = 7;
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};
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nix = {
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# We're a flake-only gal
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channel.enable = false;
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settings = {
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experimental-features = [ "nix-command" "flakes" "ca-derivations" ];
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extra-substituters = [ "https://nix-cache.nul.ie" ];
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extra-trusted-public-keys = [ "nix-cache.nul.ie-1:BzH5yMfF4HbzY1C977XzOxoPhEc9Zbu39ftPkUbH+m4=" ];
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fallback = false;
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};
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};
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users = {
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users = {
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root = {
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openssh.authorizedKeys.keyFiles = [
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.keys/management.pub
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];
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};
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};
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};
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environment = {
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systemPackages = with pkgs; [
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usbutils
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tcpdump
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(pkgs.vim.customize {
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name = "vim";
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vimrcConfig.packages.default = {
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start = [ pkgs.vimPlugins.vim-nix ];
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};
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vimrcConfig.customRC = "syntax on";
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})
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];
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};
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programs = {
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command-not-found.enable = false;
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htop.enable = true;
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};
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services = {
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getty.autologinUser = "root";
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openssh = {
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enable = true;
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settings = {
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PermitRootLogin = "prohibit-password";
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PasswordAuthentication = false;
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};
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};
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};
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};
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}
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@ -1,8 +1,32 @@
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{ inputs, ... }:
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{ self, inputs, ... }:
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let
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mkSystem = target: inputs.nixpkgs.lib.nixosSystem {
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nixpkgsLib = inputs.nixpkgs.lib.extend (final: prev:
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let
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date = final.substring 0 8 (self.lastModifiedDate or self.lastModified or "19700101");
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revCode = flake: flake.shortRev or "dirty";
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in
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{
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trivial = prev.trivial // {
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release = "24.08:u-${prev.trivial.release}";
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codeName = "Alpha";
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revisionWithDefault = default: self.rev or default;
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versionSuffix = ".${date}.${revCode self}:u-${revCode inputs.nixpkgs}";
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};
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}
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);
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mkSystem = target: nixpkgsLib.nixosSystem {
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modules = [
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{
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imports = [
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inputs.impermanence.nixosModules.impermanence
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];
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}
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./base.nix
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./disk.nix
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./network.nix
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target
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];
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};
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@ -24,7 +48,43 @@ in
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nix build "..#nixosConfigurations.qclk-$1.config.system.build.toplevel"
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'';
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build-image.exec = ''
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nix build "..#nixosConfigurations.qclk-$1.config.my.build.image"
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set -e
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export PATH="$PATH:${pkgs.util-linux}/bin:${pkgs.fakeroot}/bin:${pkgs.e2fsprogs}/bin"
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die() {
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echo "$1" >&2
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exit 1
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}
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[ -z "$1" ] && die "Need to set target"
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target=$1
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out=qclkos-$target.img
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nix build "..#nixosConfigurations.qclk-$target.config.my.disk.image"
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persistRoot=$(mktemp --tmpdir -d qclkos-persist-XXXXX)
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# TODO: bless with unique stuff (e.g. keys)
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touch "$persistRoot"/test.txt
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cp --sparse=always result/$out $out
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chmod u+w $out
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eval $(partx $out -o START,SECTORS --nr 2 --pairs)
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persistImg=$(mktemp --tmpdir qclkos-persist-XXXXX.img)
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truncate -s $((SECTORS * 512)) $persistImg
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fakeroot mkfs.ext4 -L qclkos-persist -d $persistRoot $persistImg
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dd conv=notrunc if=$persistImg of=$out seek=$START count=$SECTORS
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rm -r "$persistRoot" "$persistImg"
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'';
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push-config.exec = ''
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host=$1; shift
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target=$1; shift
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verb=$1; shift
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export NIX_SSHOPTS="-i .keys/management.key"
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nixos-rebuild $verb --flake ..#qclk-$target --target-host root@"$host" --use-substitutes "$@"
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'';
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};
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};
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205
firmware/disk.nix
Normal file
205
firmware/disk.nix
Normal file
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# Based on `nixos/modules/installer/sd-card/sd-image.nix`
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{ lib, modulesPath, pkgs, config, ... }:
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let
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inherit (lib) concatMap mkOption;
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cfg = config.my.disk;
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nixImage = (pkgs.callPackage "${modulesPath}/../lib/make-ext4-fs.nix" {
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volumeLabel = "qclkos-nix";
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uuid = "38bd3706-c049-430d-9e33-5cd0e437279b";
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storePaths = config.system.build.toplevel;
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compressImage = false;
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}).overrideAttrs (o: {
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buildCommand = ''
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# HACK: `populateImageCommands` is executed in a subshell _before_ the paths are copied in...
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shopt -s expand_aliases
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nixUpThenMkfs() {
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mv rootImage/{nix/store,}
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rmdir rootImage/nix
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faketime "$@"
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}
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alias faketime=nixUpThenMkfs
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${o.buildCommand}
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'';
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});
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in
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{
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options.my.disk = with lib.types; {
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bootSize = mkOption {
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description = "/boot size (MiB).";
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type = ints.unsigned;
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default = 1024;
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};
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persistSize = mkOption {
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description = "/persist size (MiB).";
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type = ints.unsigned;
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default = 8192;
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};
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populateBootCommands = mkOption {
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description = ''
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Shell commands to populate the ./boot directory.
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All files in that directory are copied to the
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/boot partition on the image.
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'';
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};
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imageBaseName = mkOption {
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description = "Prefix of the name of the generated image file.";
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default = "qclkos";
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};
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image = mkOption {
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description = "Output disk image.";
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type = unspecified;
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};
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rootSize = mkOption {
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description = "tmpfs root size.";
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type = str;
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default = "2G";
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};
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};
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config = {
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fileSystems = {
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"/boot" = {
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device = "/dev/disk/by-label/QCLKOS_BOOT";
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fsType = "vfat";
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};
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"/persist" = {
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device = "/dev/disk/by-label/qclkos-persist";
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fsType = "ext4";
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neededForBoot = true;
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};
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"/nix" = {
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device = "/dev/disk/by-label/qclkos-nix";
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fsType = "ext4";
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};
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"/" = {
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device = "yeet";
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fsType = "tmpfs";
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options = [ "size=${cfg.rootSize}" "mode=755" ];
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};
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};
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boot = {
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postBootCommands = ''
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# On the first boot do some maintenance tasks
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if [ -f /nix/nix-path-registration ]; then
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set -euo pipefail
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set -x
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# Figure out device names for the boot device and nix filesystem.
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nixPart=$(${pkgs.util-linux}/bin/findmnt -n -o SOURCE /nix)
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bootDevice=$(lsblk -npo PKNAME $nixPart)
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partNum=$(lsblk -npo MAJ:MIN $nixPart | ${pkgs.gawk}/bin/awk -F: '{print $2}')
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# Resize the nix partition and the filesystem to fit the disk
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echo ",+," | sfdisk -N$partNum --no-reread $bootDevice
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${pkgs.parted}/bin/partprobe
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${pkgs.e2fsprogs}/bin/resize2fs $nixPart
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# Register the contents of the initial Nix store
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${config.nix.package.out}/bin/nix-store --load-db < /nix/nix-path-registration
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# nixos-rebuild also requires a "system" profile and an /etc/NIXOS tag.
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touch /etc/NIXOS
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${config.nix.package.out}/bin/nix-env -p /nix/var/nix/profiles/system --set /run/current-system
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# Prevents this from running on later boots.
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rm -f /nix/nix-path-registration
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fi
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'';
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};
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users.mutableUsers = false;
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environment = {
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# This is based on parts of `nixfiles/nixos/modules/tmproot.nix`
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persistence."/persist" = {
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directories = [
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"/var/lib/nixos"
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"/var/lib/systemd"
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];
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files = [
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"/etc/machine-id"
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] ++ (concatMap (k: [ k.path "${k.path}.pub" ]) config.services.openssh.hostKeys);
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};
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};
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services = {
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journald.storage = "volatile";
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};
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my.disk.image = pkgs.callPackage ({
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stdenv, dosfstools, e2fsprogs, mtools, libfaketime, util-linux
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}: stdenv.mkDerivation {
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name = "${cfg.imageBaseName}-${config.system.nixos.label}-${pkgs.stdenv.hostPlatform.system}";
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nativeBuildInputs = [
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dosfstools e2fsprogs libfaketime mtools util-linux
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];
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buildCommand = ''
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mkdir -p $out
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export img=$out/${cfg.imageBaseName}.img
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nix_fs=${nixImage}
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# Gap in front of the first partition, in MiB
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gap=8
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# Create the image file sized to fit /boot and /nix, plus slack for the gap.
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nixSizeBlocks=$(du -B 512 --apparent-size $nix_fs | awk '{ print $1 }')
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bootSizeBlocks=$((${toString cfg.bootSize} * 1024 * 1024 / 512))
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persistSizeBlocks=$((${toString cfg.persistSize} * 1024 * 1024 / 512))
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imageSize=$((nixSizeBlocks * 512 + persistSizeBlocks * 512 + bootSizeBlocks * 512 + gap * 1024 * 1024))
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truncate -s $imageSize $img
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# type=b is 'W95 FAT32', type=83 is 'Linux'.
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# The "bootable" partition is where u-boot will look file for the bootloader
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# information (dtbs, extlinux.conf file).
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sfdisk --no-reread --no-tell-kernel $img <<EOF
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label: dos
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label-id: 0xabb10d5a
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start=''${gap}M, size=$bootSizeBlocks, type=b, bootable
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start=$((gap + ${toString cfg.bootSize}))M, size=$persistSizeBlocks, type=83
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start=$((gap + ${toString cfg.bootSize} + ${toString cfg.persistSize}))M, type=83
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EOF
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# Copy the nixfs into the image
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eval $(partx $img -o START,SECTORS --nr 3 --pairs)
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dd conv=notrunc if=$nix_fs of=$img seek=$START count=$SECTORS
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# Create a FAT32 /boot partition of suitable size into boot_part.img
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eval $(partx $img -o START,SECTORS --nr 1 --pairs)
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truncate -s $((SECTORS * 512)) boot_part.img
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mkfs.vfat --invariant -n QCLKOS_BOOT boot_part.img
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# Populate the files intended for /boot
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mkdir boot
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${cfg.populateBootCommands}
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find boot -exec touch --date=2000-01-01 {} +
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# Copy the populated /boot into the image
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cd boot
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# Force a fixed order in mcopy for better determinism, and avoid file globbing
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for d in $(find . -type d -mindepth 1 | sort); do
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faketime "2000-01-01 00:00:00" mmd -i ../boot_part.img "::/$d"
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done
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for f in $(find . -type f | sort); do
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mcopy -pvm -i ../boot_part.img "$f" "::/$f"
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done
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cd ..
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# Verify the FAT partition before copying it.
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fsck.vfat -vn boot_part.img
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dd conv=notrunc if=boot_part.img of=$img seek=$START count=$SECTORS
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'';
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}) { };
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};
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||||
}
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18
firmware/network.nix
Normal file
18
firmware/network.nix
Normal file
@ -0,0 +1,18 @@
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{ lib, config, ... }: {
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networking = {
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hostName = config.system.name;
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useDHCP = false;
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useNetworkd = true;
|
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};
|
||||
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systemd = {
|
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network = {
|
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networks = {
|
||||
"10-ethernet" = {
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matchConfig.Name = "ethernet";
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DHCP = "yes";
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||||
};
|
||||
};
|
||||
};
|
||||
};
|
||||
}
|
||||
@ -1,8 +1,85 @@
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{ pkgs, modulesPath, config, ... }: {
|
||||
imports = [
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"${modulesPath}/installer/sd-card/sd-image-aarch64.nix"
|
||||
];
|
||||
|
||||
{ pkgs, config, ... }: {
|
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nixpkgs.system = "aarch64-linux";
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my.build.image = config.system.build.sdImage;
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boot = {
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kernelParams = [
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"console=ttyS1,115200n8"
|
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"console=tty0"
|
||||
];
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||||
|
||||
loader.generic-extlinux-compatible = {
|
||||
enable = true;
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||||
configurationLimit = 3;
|
||||
};
|
||||
};
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||||
|
||||
hardware = {
|
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deviceTree.filter = "*rpi-3*.dtb";
|
||||
enableRedistributableFirmware = true;
|
||||
};
|
||||
|
||||
systemd.network.links = {
|
||||
"10-ethernet" = {
|
||||
matchConfig.Path = "platform-3f980000.usb-usb-0:1.1.1:1.0";
|
||||
linkConfig.Name = "ethernet";
|
||||
};
|
||||
"10-wifi" = {
|
||||
matchConfig.Path = "platform-3f300000.mmc";
|
||||
linkConfig.Name = "wifi";
|
||||
};
|
||||
};
|
||||
|
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my = {
|
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disk = {
|
||||
bootSize = 512;
|
||||
persistSize = 1024;
|
||||
rootSize = "128M";
|
||||
imageBaseName = "qclkos-rpi3";
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||||
|
||||
# Based on `nixos/modules/installer/sd-card/sd-image-aarch64.nix`
|
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populateBootCommands =
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let
|
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configTxt = pkgs.writeText "config.txt" ''
|
||||
[pi3]
|
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kernel=u-boot-rpi3.bin
|
||||
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[pi02]
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kernel=u-boot-rpi3.bin
|
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|
||||
# Otherwise the resolution will be weird in most cases, compared to
|
||||
# what the pi3 firmware does by default.
|
||||
disable_overscan=1
|
||||
|
||||
# Supported in newer board revisions
|
||||
arm_boost=1
|
||||
|
||||
[all]
|
||||
# Boot in 64-bit mode.
|
||||
arm_64bit=1
|
||||
|
||||
# U-Boot needs this to work, regardless of whether UART is actually used or not.
|
||||
# Look in arch/arm/mach-bcm283x/Kconfig in the U-Boot tree to see if this is still
|
||||
# a requirement in the future.
|
||||
enable_uart=1
|
||||
|
||||
# Prevent the firmware from smashing the framebuffer setup done by the mainline kernel
|
||||
# when attempting to show low-voltage or overtemperature warnings.
|
||||
avoid_warnings=1
|
||||
'';
|
||||
in ''
|
||||
(cd ${pkgs.raspberrypifw}/share/raspberrypi/boot && cp bootcode.bin fixup*.dat start*.elf $NIX_BUILD_TOP/boot/)
|
||||
|
||||
# Add the config
|
||||
cp ${configTxt} boot/config.txt
|
||||
|
||||
# Add pi3 specific files
|
||||
cp ${pkgs.ubootRaspberryPi3_64bit}/u-boot.bin boot/u-boot-rpi3.bin
|
||||
cp ${pkgs.raspberrypifw}/share/raspberrypi/boot/bcm2710-rpi-2-b.dtb boot/
|
||||
cp ${pkgs.raspberrypifw}/share/raspberrypi/boot/bcm2710-rpi-3-b.dtb boot/
|
||||
cp ${pkgs.raspberrypifw}/share/raspberrypi/boot/bcm2710-rpi-3-b-plus.dtb boot/
|
||||
|
||||
${config.boot.loader.generic-extlinux-compatible.populateCmd} -c ${config.system.build.toplevel} -d ./boot
|
||||
'';
|
||||
};
|
||||
};
|
||||
}
|
||||
|
||||
16
flake.lock
generated
16
flake.lock
generated
@ -193,6 +193,21 @@
|
||||
"type": "github"
|
||||
}
|
||||
},
|
||||
"impermanence": {
|
||||
"locked": {
|
||||
"lastModified": 1724489415,
|
||||
"narHash": "sha256-ey8vhwY/6XCKoh7fyTn3aIQs7WeYSYtLbYEG87VCzX4=",
|
||||
"owner": "nix-community",
|
||||
"repo": "impermanence",
|
||||
"rev": "c7f5b394397398c023000cf843986ee2571a1fd7",
|
||||
"type": "github"
|
||||
},
|
||||
"original": {
|
||||
"owner": "nix-community",
|
||||
"repo": "impermanence",
|
||||
"type": "github"
|
||||
}
|
||||
},
|
||||
"nix": {
|
||||
"inputs": {
|
||||
"flake-compat": "flake-compat",
|
||||
@ -417,6 +432,7 @@
|
||||
"inputs": {
|
||||
"devenv": "devenv",
|
||||
"flake-parts": "flake-parts",
|
||||
"impermanence": "impermanence",
|
||||
"nixpkgs": "nixpkgs_2",
|
||||
"rootdir": "rootdir"
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user