forked from M-Labs/nix-servo
flake: add not-os disk image builder and qemu
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parent
543a8632c6
commit
1aee5344a5
102
flake.nix
102
flake.nix
@ -8,6 +8,7 @@
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outputs = { self, nixpkgs, not-os }:
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let
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pkgs = import nixpkgs { system = "x86_64-linux"; };
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not-os-cfg = not-os-configured.config.system;
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patched-not-os = pkgs.applyPatches {
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name = "not-os-patched";
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@ -194,10 +195,10 @@
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extraConfig = ''
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CONFIG_AUTOBOOT=y
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CONFIG_BOOTCOMMAND="${builtins.replaceStrings [ "\n" ] [ "; " ] ''
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setenv bootargs 'root=/dev/mmcblk0p2 console=ttyPS0,115200n8 systemConfig=${builtins.unsafeDiscardStringContext not-os-configured.config.system.build.toplevel}'
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setenv bootargs 'root=/dev/mmcblk0p2 console=ttyPS0,115200n8 systemConfig=${builtins.unsafeDiscardStringContext not-os-cfg.build.toplevel}'
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fatload mmc 0 0x6400000 uImage
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fatload mmc 0 0x8000000 devicetree.dtb
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fatload mmc 0 0xA400000 uramdisk.image.gz
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fatload mmc 0 0xA400000 uRamdisk.image.gz
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bootm 0x6400000 0xA400000 0x8000000
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''}"
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CONFIG_BOOTDELAY=0
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@ -236,6 +237,99 @@
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system = "x86_64-linux";
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crossSystem.system = "armv7l-linux";
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});
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not-os-qemu = { board ? "zc706" }: let
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qemuScript = ''
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#!/bin/bash
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export PATH=${pkgs.qemu}/bin:$PATH
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IMGDIR=$(mktemp -d /tmp/not-os-qemu-XXXXXX)
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BASE=$(realpath $(dirname $0))
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qemu-img create -F raw -f qcow2 -b $BASE/sd-image.img $IMGDIR/sd-overlay.qcow2 512M
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# Some command arguments are based from samples in Xilinx QEMU User Documentation
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# See: https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/821854273/Running+Bare+Metal+Applications+on+QEMU
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qemu-system-arm \
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-M xilinx-zynq-a9 \
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-serial /dev/null \
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-serial stdio \
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-display none \
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-dtb $BASE/devicetree.dtb \
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-kernel $BASE/uImage \
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-initrd $BASE/uRamdisk.image.gz \
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-drive file=$IMGDIR/sd-overlay.qcow2,if=sd,format=qcow2 \
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-append "root=/dev/mmcblk0p2 console=ttyPS0,115200n8 systemConfig=${builtins.unsafeDiscardStringContext not-os-cfg.build.toplevel}";
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rm -rf $IMGDIR
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'';
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in pkgs.runCommand "not-os-qemu" {
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inherit qemuScript;
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passAsFile = [ "qemuScript" ];
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preferLocalBuild = true;
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}
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''
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mkdir $out
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cd $out
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cp -s ${not-os-cfg.build.kernel}/uImage .
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cp -s ${not-os-cfg.build.uRamdisk}/initrd uRamdisk.image.gz
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cp -s ${not-os-cfg.build.kernel}/dtbs/zynq-zc706.dtb devicetree.dtb
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cp -s ${sd-image { inherit board; }}/sd-image/sd-image.img .
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ln -sv ${not-os-cfg.build.toplevel} toplevel
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cp $qemuScriptPath qemu-script
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chmod +x qemu-script
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patchShebangs qemu-script
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'';
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sd-image = { board ? "zc706" }: let
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rootfsImage = pkgs.callPackage (pkgs.path + "/nixos/lib/make-ext4-fs.nix") {
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storePaths = [ not-os-cfg.build.toplevel ];
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volumeLabel = "ROOT";
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};
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# Current firmware (kernel, bootimage, etc..) takes ~18MB
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firmwareSize = 30;
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firmwarePartitionOffset = 8;
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in pkgs.stdenv.mkDerivation {
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name = "sd-image";
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nativeBuildInputs = with pkgs; [ dosfstools mtools libfaketime util-linux parted ];
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buildCommand = ''
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mkdir -p $out/nix-support $out/sd-image
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export img=$out/sd-image/sd-image.img
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echo "${pkgs.stdenv.buildPlatform.system}" > $out/nix-support/system
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echo "file sd-image $img" >> $out/nix-support/hydra-build-products
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gap=${toString firmwarePartitionOffset}
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rootSizeBlocks=$(du -B 512 --apparent-size ${rootfsImage} | awk '{ print $1 }')
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firmwareSizeBlocks=$((${toString firmwareSize} * 1024 * 1024 / 512))
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imageSize=$((rootSizeBlocks * 512 + firmwareSizeBlocks * 512 + gap * 1024 * 1024))
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truncate -s $imageSize $img
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fat32Start="$((gap))MB"
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fat32End="$((gap + ${toString firmwareSize}))MB"
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parted $img mklabel msdos
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parted $img mkpart primary fat32 $fat32Start $fat32End
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parted $img mkpart primary ext4 $fat32End 100%
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parted $img set 1 boot on
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eval $(partx $img -o START,SECTORS --nr 2 --pairs)
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dd conv=notrunc if=${rootfsImage} of=$img seek=$START count=$SECTORS
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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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faketime "1970-01-01 00:00:00" mkfs.vfat -n BOOT firmware_part.img
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mkdir firmware
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cp ${bootimage { inherit board; }}/boot.bin firmware/
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cp ${not-os-cfg.build.kernel}/uImage firmware/
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cp ${not-os-cfg.build.uRamdisk}/initrd firmware/uRamdisk.image.gz
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cp ${not-os-cfg.build.kernel}/dtbs/zynq-zc706.dtb firmware/devicetree.dtb
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(cd firmware; mcopy -psvm -i ../firmware_part.img ./* ::)
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dd conv=notrunc if=firmware_part.img of=$img seek=$START count=$SECTORS
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'';
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};
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in rec {
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packages.x86_64-linux = {
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inherit mkbootimage;
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@ -244,7 +338,9 @@
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zc706-u-boot = u-boot { board = "zc706"; };
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zc706-fsbl = fsbl { board = "zc706"; };
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zc706-bootimage = bootimage { board = "zc706"; };
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zc706-not-os = not-os-configured.config.system.build.zynq_image;
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zc706-qemu = not-os-qemu { board = "zc706"; };
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zc706-sd-image = sd-image { board = "zc706"; };
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zc706-not-os = not-os-cfg.build.zynq_image;
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};
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hydraJobs = packages.x86_64-linux // packages.armv7l-linux;
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};
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