Switches to full nixos config.
WHY was I rewriting this from scratch??
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16
config.txt
16
config.txt
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@ -1,16 +0,0 @@
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[pi02]
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kernel=u-boot-rpi3.bin
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core_freq=250
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[all]
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# Boot in 64-bit mode.
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arm_64bit=1
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# U-Boot needs this to work, regardless of whether UART is actually used or not.
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# Look in arch/arm/mach-bcm283x/Kconfig in the U-Boot tree to see if this is still
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# a requirement in the future.
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enable_uart=1
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# Prevent the firmware from smashing the framebuffer setup done by the mainline kernel
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# when attempting to show low-voltage or overtemperature warnings.
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avoid_warnings=1
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31
flake.nix
31
flake.nix
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@ -17,17 +17,14 @@
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{
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apps.default = {
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type = "app";
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program = "${self.outputs.packages.${system}.vmscript}/bin/vmscript";
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program = self.outputs.packages.${system}.vmscript + "/bin/vmscript";
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};
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packages = {
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default = import ./sd-card.nix { inherit pkgs crossPkgs; };
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uncompressed = import ./sd-card.nix { inherit pkgs crossPkgs; compress = false; };
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vmscript = pkgs.writeScriptBin "vmscript" ''
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packages.vmscript = pkgs.writeScriptBin "vmscript" ''
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#!${pkgs.runtimeShell} -e
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img=./sd-card.img
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cp -b ${self.outputs.packages.${system}.uncompressed}/sd-card.img $img
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cp -b ${self.outputs.image}/sd-image/orange.img $img
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chmod 640 $img
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truncate -s %2G $img
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${pkgs.qemu}/bin/qemu-system-aarch64 \
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-machine raspi3b \
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-kernel "${crossPkgs.ubootRaspberryPi3_64bit}/u-boot.bin" \
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@ -39,8 +36,22 @@
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-serial null \
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-serial mon:stdio
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'';
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}) // {
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nixosConfigurations.orange = nixpkgs.lib.nixosSystem {
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modules = [
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"${nixpkgs}/nixos/modules/installer/sd-card/sd-image-aarch64.nix"
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{
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boot.kernelParams = [ "console=ttyS1,115200n8" ];
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networking.hostName = "orange";
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system.stateVersion = "23.05";
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nixpkgs.hostPlatform.system = "aarch64-linux";
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sdImage = {
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imageName = "orange.img";
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compressImage = false;
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};
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}
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];
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};
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image = self.outputs.nixosConfigurations.orange.config.system.build.sdImage;
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};
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});
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}
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12
rootfs.nix
12
rootfs.nix
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@ -1,12 +0,0 @@
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{ pkgs }:
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pkgs.stdenv.mkDerivation {
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name = "orange-rootfs.img.zstd";
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nativeBuildInputs = with pkgs; [ zstd ];
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buildCommand = ''
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truncate -s 512M ./rootfs.img
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zstd -T$NIX_BUILD_CORES ./rootfs.img -o $out
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'';
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}
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87
sd-card.nix
87
sd-card.nix
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@ -1,87 +0,0 @@
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{ pkgs, crossPkgs, compress ? true}:
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let
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fwPart = {
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offset = 8;
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id = "0xfeed3425";
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name = "FIRMWARE";
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size = 512;
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};
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rootfsImage = import ./rootfs.nix { inherit pkgs; };
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configTxt = pkgs.writeText "config.txt" (builtins.readFile ./config.txt);
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populateFirmwareCommands = ''
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# Add config.txt
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cp ${configTxt} firmware/config.txt
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# Copy the firmware files
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cp ${crossPkgs.raspberrypifw}/share/raspberrypi/boot/bootcode.bin firmware/
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cp ${crossPkgs.raspberrypifw}/share/raspberrypi/boot/fixup*.dat firmware/
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cp ${crossPkgs.raspberrypifw}/share/raspberrypi/boot/start*.elf firmware/
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# Add pi3 specific files
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cp ${crossPkgs.ubootRaspberryPi3_64bit}/u-boot.bin firmware/u-boot-rpi3.bin
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'';
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in
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pkgs.stdenv.mkDerivation {
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name = "orange";
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nativeBuildInputs = with pkgs; [ dosfstools e2fsprogs libfaketime mtools util-linux zstd ];
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buildCommand = ''
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mkdir $out
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img=$out/sd-card.img
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root_fs=./rootfs.img
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zstd -d --no-progress "${rootfsImage}" -o $root_fs
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# Create the image file sized to fit /boot/firmware and /, plus slack for the gap.
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rootSizeBlocks=$(du -B 512 --apparent-size $root_fs | awk '{ print $1 }')
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firmwareSizeBlocks=$((${toString fwPart.size} * 1024 * 1024 / 512))
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imageSize=$((rootSizeBlocks * 512 + firmwareSizeBlocks * 512))
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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 $img <<EOF
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label: dos
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label-id: ${fwPart.id}
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start=${toString fwPart.offset}M, size=${toString (fwPart.size - fwPart.offset)}M, type=b
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start=${toString fwPart.size}M, type=83, bootable
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EOF
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# Copy the rootfs into the SD image
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eval $(partx $img -o START,SECTORS --nr 2 --pairs)
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dd conv=notrunc if=$root_fs of=$img seek=$START count=$SECTORS
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# Create a FAT32 /boot/firmware partition of suitable size into firmware_part.img
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eval $(partx $img -o START,SECTORS --nr 1 --pairs)
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truncate -s $((SECTORS * 512)) firmware_part.img
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mkfs.vfat --invariant -i ${toString fwPart.size} -n ${fwPart.name} firmware_part.img
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# Populate the files intended for /boot/firmware
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mkdir firmware
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${populateFirmwareCommands}
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find firmware -exec touch --date=2000-01-01 {} +
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# Copy the populated /boot/firmware into the SD image
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cd firmware
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# Force a fixed order in mcopy for better determinism, and avoid file globbing
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for d in $(find . -type d -mindepth 1 | sort); do
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faketime "2000-01-01 00:00:00" mmd -i ../firmware_part.img "::/$d"
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done
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for f in $(find . -type f | sort); do
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mcopy -pvm -i ../firmware_part.img "$f" "::/$f"
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done
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cd ..
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# Verify the FAT partition before copying it.
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fsck.vfat -vn firmware_part.img
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dd conv=notrunc if=firmware_part.img of=$img seek=$START count=$SECTORS
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${pkgs.lib.optionalString compress ''
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zstd -T$NIX_BUILD_CORES --rm $img
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''}
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'';
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}
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