63 lines
1.8 KiB
Nix
63 lines
1.8 KiB
Nix
{
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config,
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lib,
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pkgs,
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...
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}:
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{
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imports = [ ];
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options.me = {
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raspberry_pi_sd_image.enable = lib.mkOption {
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type = lib.types.bool;
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default = false;
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example = true;
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description = "Whether we want to install raspberry_pi_sd_image.";
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};
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};
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config = lib.mkIf config.me.raspberry_pi_sd_image.enable (
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lib.mkMerge [
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{
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boot.loader.grub.enable = false;
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boot.loader.generic-extlinux-compatible.enable = true;
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boot.consoleLogLevel = lib.mkDefault 7;
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boot.kernelPackages = pkgs.linuxKernel.packages.linux_rpi1;
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sdImage = {
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populateFirmwareCommands =
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let
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configTxt = pkgs.writeText "config.txt" ''
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# u-boot refuses to start (gets stuck at rainbow polygon) without this,
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# at least on Raspberry Pi 0.
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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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[pi0]
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kernel=u-boot-rpi0.bin
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[pi1]
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kernel=u-boot-rpi1.bin
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'';
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in
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''
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(cd ${pkgs.raspberrypifw}/share/raspberrypi/boot && cp bootcode.bin fixup*.dat start*.elf *.dtb $NIX_BUILD_TOP/firmware/)
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cp ${pkgs.ubootRaspberryPiZero}/u-boot.bin firmware/u-boot-rpi0.bin
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cp ${pkgs.ubootRaspberryPi}/u-boot.bin firmware/u-boot-rpi1.bin
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cp ${configTxt} firmware/config.txt
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'';
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populateRootCommands = ''
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mkdir -p ./files/boot
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${config.boot.loader.generic-extlinux-compatible.populateCmd} -c ${config.system.build.toplevel} -d ./files/boot
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'';
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};
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}
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]
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);
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}
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