diff options
Diffstat (limited to 'pkgs/os-specific/linux/kernel/manual-config.nix')
| -rw-r--r-- | pkgs/os-specific/linux/kernel/manual-config.nix | 322 |
1 files changed, 189 insertions, 133 deletions
diff --git a/pkgs/os-specific/linux/kernel/manual-config.nix b/pkgs/os-specific/linux/kernel/manual-config.nix index f097f2562d02..206f95661e8e 100644 --- a/pkgs/os-specific/linux/kernel/manual-config.nix +++ b/pkgs/os-specific/linux/kernel/manual-config.nix @@ -1,45 +1,16 @@ -{ stdenv, runCommand, nettools, bc, perl, kmod, writeTextFile }: +{ stdenv, runCommand, nettools, bc, perl, kmod, writeTextFile, ubootChooser }: let - inherit (stdenv.lib) - hasAttr getAttr optionalAttrs optional optionalString maintainers platforms; - - # Function to parse the config file into a nix expression - readConfig = configFile: - let - configAttrs = import "${runCommand "config.nix" {} '' - echo "{" > "$out" - while IFS='=' read key val; do - [ "x''${key#CONFIG_}" != "x$key" ] || continue - no_firstquote="''${val#\"}"; - echo ' "'"$key"'" = "'"''${no_firstquote%\"}"'";' >> "$out" - done < "${configFile}" - echo "}" >> $out - ''}"; - - config = configAttrs // rec { - attrName = attr: "CONFIG_" + attr; - - isSet = attr: hasAttr (attrName attr) config; - - getValue = attr: if isSet attr then getAttr (attrName attr) config else null; - - isYes = attr: (isSet attr) && ((getValue attr) == "y"); - - isNo = attr: (isSet attr) && ((getValue attr) == "n"); - - isModule = attr: (isSet attr) && ((getValue attr) == "m"); - - isEnabled = attr: (isModule attr) || (isYes attr); - - isDisabled = attr: (!(isSet attr)) || (isNo attr); - }; - in - config; - -in - -{ + readConfig = configfile: import (runCommand "config.nix" {} '' + echo "{" > "$out" + while IFS='=' read key val; do + [ "x''${key#CONFIG_}" != "x$key" ] || continue + no_firstquote="''${val#\"}"; + echo ' "'"$key"'" = "'"''${no_firstquote%\"}"'";' >> "$out" + done < "${configfile}" + echo "}" >> $out + '').outPath; +in { # The kernel version version, # The version of the kernel module directory @@ -48,127 +19,212 @@ in src, # Any patches kernelPatches ? [], - # The kernel .config file + # Patches for native compiling only + nativeKernelPatches ? [], + # Patches for cross compiling only + crossKernelPatches ? [], + # The native kernel .config file configfile, + # The cross kernel .config file + crossConfigfile ? configfile, # Manually specified nixexpr representing the config # If unspecified, this will be autodetected from the .config - config ? optionalAttrs allowImportFromDerivation (readConfig configfile), + config ? stdenv.lib.optionalAttrs allowImportFromDerivation (readConfig configfile), + # Cross-compiling config + crossConfig ? if allowImportFromDerivation then (readConfig crossConfigfile) else config, # Whether to utilize the controversial import-from-derivation feature to parse the config allowImportFromDerivation ? false }: let - installkernel = name: writeTextFile { name = "installkernel"; executable=true; text = '' - #!/bin/sh - mkdir $4 - cp -av $2 $4/${name} - cp -av $3 $4 - '';}; - - isModular = config.isYes "MODULES"; + inherit (stdenv.lib) + hasAttr getAttr optional optionalString maintainers platforms; - installsFirmware = (config.isEnabled "FW_LOADER") && - (isModular || (config.isDisabled "FIRMWARE_IN_KERNEL")); + installkernel = writeTextFile { name = "installkernel"; executable=true; text = '' + #!${stdenv.shell} -e + mkdir -p $4 + cp -av $2 $4 + cp -av $3 $4 + ''; }; commonMakeFlags = [ "O=$(buildRoot)" - "INSTALL_PATH=$(out)" - ] ++ (optional isModular "INSTALL_MOD_PATH=$(out)") - ++ optional installsFirmware "INSTALL_FW_PATH=$(out)/lib/firmware"; + "DEPMOD=${kmod}/bin/depmod" + ]; - sourceRoot = stdenv.mkDerivation { - name = "linux-${version}-source"; + drvAttrs = config_: platform: kernelPatches: configfile: + let + config = let attrName = attr: "CONFIG_" + attr; in { + isSet = attr: hasAttr (attrName attr) config; - inherit src; + getValue = attr: if config.isSet attr then getAttr (attrName attr) config else null; - patches = map (p: p.patch) kernelPatches; + isYes = attr: (config.getValue attr) == "y"; - phases = [ "unpackPhase" "patchPhase" "installPhase" ]; + isNo = attr: (config.getValue attr) == "n"; - prePatch = '' - for mf in $(find -name Makefile -o -name Makefile.include -o -name install.sh); do - echo "stripping FHS paths in \`$mf'..." - sed -i "$mf" -e 's|/usr/bin/||g ; s|/bin/||g ; s|/sbin/||g' - done - sed -i Makefile -e 's|= depmod|= ${kmod}/sbin/depmod|' - ''; + isModule = attr: (config.getValue attr) == "m"; - installPhase = '' - cd .. - mv $sourceRoot $out - ''; - }; -in + isEnabled = attr: (config.isModule attr) || (config.isYes attr); -stdenv.mkDerivation { - name = "linux-${version}"; + isDisabled = attr: (!(config.isSet attr)) || (config.isNo attr); + } // config_; - enableParallelBuilding = true; + isModular = config.isYes "MODULES"; - outputs = if isModular then [ "out" "dev" ] else null; + installsFirmware = (config.isEnabled "FW_LOADER") && + (isModular || (config.isDisabled "FIRMWARE_IN_KERNEL")); + in { + outputs = if isModular then [ "out" "dev" ] else null; - passthru = { - inherit version modDirVersion config kernelPatches src; - }; + passthru = { + inherit version modDirVersion config kernelPatches; + }; - inherit sourceRoot; + inherit src; + + preUnpack = '' + mkdir build + export buildRoot="$(pwd)/build" + ''; + + patches = map (p: p.patch) kernelPatches; + + prePatch = '' + for mf in $(find -name Makefile -o -name Makefile.include -o -name install.sh); do + echo "stripping FHS paths in \`$mf'..." + sed -i "$mf" -e 's|/usr/bin/||g ; s|/bin/||g ; s|/sbin/||g' + done + ''; + + configurePhase = '' + runHook preConfigure + ln -sv ${configfile} $buildRoot/.config + make $makeFlags "''${makeFlagsArray[@]}" oldconfig + runHook postConfigure + ''; + + buildFlags = [ "KBUILD_BUILD_VERSION=1-NixOS" platform.kernelTarget ] ++ optional isModular "modules"; + + installFlags = [ + "INSTALLKERNEL=${installkernel}" + "INSTALL_PATH=$(out)" + ] ++ (optional isModular "INSTALL_MOD_PATH=$(out)") + ++ optional installsFirmware "INSTALL_FW_PATH=$(out)/lib/firmware"; + + # Some image types need special install targets (e.g. uImage is installed with make uinstall) + installTargets = [ (if platform.kernelTarget == "uImage" then "uinstall" else "install") ]; + + postInstall = optionalString installsFirmware '' + mkdir -p $out/lib/firmware + '' + (if isModular then '' + make modules_install $makeFlags "''${makeFlagsArray[@]}" \ + $installFlags "''${installFlagsArray[@]}" + unlink $out/lib/modules/${modDirVersion}/build + unlink $out/lib/modules/${modDirVersion}/source + + mkdir -p $dev/lib/modules/${modDirVersion} + cd .. + mv $sourceRoot $dev/lib/modules/${modDirVersion}/source + cd $dev/lib/modules/${modDirVersion}/source + + mv $buildRoot/.config $buildRoot/Module.symvers $TMPDIR + rm -fR $buildRoot + mkdir $buildRoot + mv $TMPDIR/.config $TMPDIR/Module.symvers $buildRoot + make modules_prepare $makeFlags "''${makeFlagsArray[@]}" + mv $buildRoot $dev/lib/modules/${modDirVersion}/build + + # !!! No documentation on how much of the source tree must be kept + # If/when kernel builds fail due to missing files, you can add + # them here. Note that we may see packages requiring headers + # from drivers/ in the future; it adds 50M to keep all of its + # headers on 3.10 though. + + chmod +w -R ../source + arch=`cd $dev/lib/modules/${modDirVersion}/build/arch; ls` + + # Remove unusued arches + mv arch/$arch . + rm -fR arch + mkdir arch + mv $arch arch + + # Remove all driver-specific code (50M of which is headers) + rm -fR drivers + + # Keep all headers + find . -type f -name '*.h' -print0 | xargs -0 chmod -w + + # Keep root and arch-specific Makefiles + chmod -w Makefile + chmod -w arch/$arch/Makefile + + # Keep whole scripts dir + chmod -w -R scripts + + # Delete everything not kept + find . -type f -perm -u=w -print0 | xargs -0 rm + + # Delete empty directories + find -empty -type d -delete + '' else optionalString installsFirmware '' + make firmware_install $makeFlags "''${makeFlagsArray[@]}" \ + $installFlags "''${installFlagsArray[@]}" + ''); + + # !!! This leaves references to gcc in $dev + # that we might be able to avoid + postFixup = if isModular then '' + if [ -z "$dontStrip" ]; then + find $out -name "*.ko" -print0 | xargs -0 -r ''${crossConfig+$crossConfig-}strip -S + fi + # !!! Should this be part of stdenv? Also patchELF should take an argument... + prefix=$dev + patchELF + prefix=$out + '' else null; + + meta = { + description = + "The Linux kernel" + + (if kernelPatches == [] then "" else + " (with patches: " + + stdenv.lib.concatStrings (stdenv.lib.intersperse ", " (map (x: x.name) kernelPatches)) + + ")"); + license = "GPLv2"; + homepage = http://www.kernel.org/; + maintainers = [ + maintainers.shlevy + ]; + platforms = platforms.linux; + }; + }; +in - unpackPhase = '' - mkdir build - export buildRoot="$(pwd)/build" - cd ${sourceRoot} - ''; +stdenv.mkDerivation ((drvAttrs config stdenv.platform (kernelPatches ++ nativeKernelPatches) configfile) // { + name = "linux-${version}"; - configurePhase = '' - runHook preConfigure - ln -sv ${configfile} $buildRoot/.config - make $makeFlags "''${makeFlagsArray[@]}" oldconfig - runHook postConfigure - ''; + enableParallelBuilding = true; - nativeBuildInputs = [ perl bc nettools ]; + nativeBuildInputs = [ perl bc nettools ] ++ optional (stdenv.platform.uboot != null) + (ubootChooser stdenv.platform.uboot); makeFlags = commonMakeFlags ++ [ - "INSTALLKERNEL=${installkernel stdenv.platform.kernelTarget}" + "ARCH=${stdenv.platform.kernelArch}" ]; - crossAttrs = { - makeFlags = commonMakeFlags ++ [ - "INSTALLKERNEL=${installkernel stdenv.cross.platform.kernelTarget}" - ]; - }; - - postInstall = optionalString installsFirmware '' - mkdir -p $out/lib/firmware - '' + (if isModular then '' - make modules_install $makeFlags "''${makeFlagsArray[@]}" \ - $installFlags "''${installFlagsArray[@]}" - rm -f $out/lib/modules/${modDirVersion}/build - mkdir -p $dev/lib/modules/${modDirVersion} - mv $out/lib/modules/${modDirVersion}/source $dev/lib/modules/${modDirVersion}/source - mv $buildRoot $dev/lib/modules/${modDirVersion}/build - '' else optionalString installsFirmware '' - make firmware_install $makeFlags "''${makeFlagsArray[@]}" \ - $installFlags "''${installFlagsArray[@]}" - ''); - - postFixup = if isModular then '' - if [ -z "$dontStrip" ]; then - find $out -name "*.ko" -print0 | xargs -0 -r strip -S - # Remove all references to the source directory to avoid unneeded - # runtime dependencies - find $out -name "*.ko" -print0 | xargs -0 -r sed -i \ - "s|${sourceRoot}|$NIX_STORE/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-${sourceRoot.name}|g" - fi - '' else null; - - meta = { - description = "The Linux kernel"; - license = "GPLv2"; - homepage = http://www.kernel.org/; - maintainers = [ - maintainers.shlevy - ]; - platforms = platforms.linux; + crossAttrs = let cp = stdenv.cross.platform; in + (drvAttrs crossConfig cp (kernelPatches ++ crossKernelPatches) crossConfigfile) // { + makeFlags = commonMakeFlags ++ [ + "ARCH=${cp.kernelArch}" + "CROSS_COMPILE=$(crossConfig)-" + ]; + + # !!! uboot has messed up cross-compiling, nativeDrv builds arm tools on x86, + # crossDrv builds x86 tools on x86 (but arm uboot). If this is fixed, uboot + # can just go into buildInputs (but not nativeBuildInputs since cp.uboot + # may be different from stdenv.platform.uboot) + buildInputs = optional (cp.uboot != null) (ubootChooser cp.uboot).crossDrv; }; -} +}) |