# To build, use: # nix-build nixos -I nixos-config=nixos/modules/installer/cd-dvd/sd-image-aarch64.nix -A config.system.build.sdImage { config, lib, pkgs, ... }: let extlinux-conf-builder = import ../../system/boot/loader/generic-extlinux-compatible/extlinux-conf-builder.nix { pkgs = pkgs.buildPackages; }; in { imports = [ ../../profiles/base.nix ../../profiles/installation-device.nix ./sd-image.nix ]; boot.loader.grub.enable = false; boot.loader.generic-extlinux-compatible.enable = true; boot.consoleLogLevel = lib.mkDefault 7; # The serial ports listed here are: # - ttyS0: for Tegra (Jetson TX1) # - ttyAMA0: for QEMU's -machine virt # Also increase the amount of CMA to ensure the virtual console on the RPi3 works. boot.kernelParams = ["cma=32M" "console=ttyS0,115200n8" "console=ttyAMA0,115200n8" "console=tty0"]; boot.initrd.availableKernelModules = [ # Allows early (earlier) modesetting for the Raspberry Pi "vc4" "bcm2835_dma" "i2c_bcm2835" # Allows early (earlier) modesetting for Allwinner SoCs "sun4i_drm" "sun8i_drm_hdmi" "sun8i_mixer" ]; sdImage = { populateFirmwareCommands = let configTxt = pkgs.writeText "config.txt" '' kernel=u-boot-rpi3.bin # Boot in 64-bit mode. arm_64bit=1 # U-Boot used to need this to work, regardless of whether UART is actually used or not. # TODO: check when/if this can be removed. 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/firmware/) cp ${pkgs.ubootRaspberryPi3_64bit}/u-boot.bin firmware/u-boot-rpi3.bin cp ${configTxt} firmware/config.txt ''; populateRootCommands = '' mkdir -p ./files/boot ${extlinux-conf-builder} -t 3 -c ${config.system.build.toplevel} -d ./files/boot ''; }; }