# Maintainer: David P. <megver83@parabola.nu>
# Contributor: André Silva <emulatorman@hyperbola.info>
# Contributor: Márcio Silva <coadde@hyperbola.info>

# Based on linux package

_replacesarchkernel=('linux%') # '%' gets replaced with kernel suffix
_replacesoldkernels=() # '%' gets replaced with kernel suffix
_replacesoldmodules=() # '%' gets replaced with kernel suffix

pkgbase=linux-libre-xtreme
pkgver=5.4.10
_hrdedrel=a
pkgrel=1
pkgdesc='Security-Hardened Linux-libre (with Apparmor by default)'
rcnver=5.4.5
rcnrel=armv7-x13
url='https://wiki.parabola.nu/Xtreme'
arch=(i686 x86_64 armv7h)
license=(GPL2)
makedepends=(
  bc kmod libelf
  xmlto python-sphinx python-sphinx_rtd_theme graphviz imagemagick
)
options=('!strip')
_srcname=linux-5.4
source=(
  "https://linux-libre.fsfla.org/pub/linux-libre/releases/${_srcname##*-}-gnu/linux-libre-${_srcname##*-}-gnu.tar.xz"{,.sign}
  "https://linux-libre.fsfla.org/pub/linux-libre/releases/$pkgver-gnu/patch-${_srcname##*-}-gnu-$pkgver-gnu.xz"{,.sign}
  "https://repo.parabola.nu/other/linux-libre/logos/logo_linux_"{clut224.ppm,vga16.ppm,mono.pbm}{,.sig}
  config.i686 config.x86_64 config.armv7h    # the main kernel config files
  linux-armv7h.preset                        # armv7h preset file for mkinitcpio ramdisk

  # maintain the TTY over USB disconnects
  # http://www.coreboot.org/EHCI_Gadget_Debug
  0001-usb-serial-gadget-no-TTY-hangup-on-USB-disconnect-WI.patch
  # fix Atmel maXTouch touchscreen support
  # https://labs.parabola.nu/issues/877
  # http://www.fsfla.org/pipermail/linux-libre/2015-November/003202.html
  0002-fix-Atmel-maXTouch-touchscreen-support.patch
  # extracted patches from Arch Linux kernel sources
  0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch
  0002-lib-devres-add-a-helper-function-for-ioremap_uc.patch
  0003-mfd-intel-lpss-Use-devm_ioremap_uc-for-MMIO.patch
  0004-PCI-pciehp-Do-not-disable-interrupt-twice-on-suspend.patch
  0005-PCI-pciehp-Prevent-deadlock-on-disconnect.patch
  0006-ACPI-PM-s2idle-Rework-ACPI-events-synchronization.patch
  0007-iwlwifi-pcie-restore-support-for-Killer-Qu-C0-NICs.patch
  0008-x86-intel-Disable-HPET-on-Intel-Ice-Lake-platforms.patch
  0009-drm-i915-save-AUD_FREQ_CNTRL-state-at-audio-domain-s.patch
  0010-drm-i915-Fix-audio-power-up-sequence-for-gen10-displ.patch
  0011-drm-i915-extend-audio-CDCLK-2-BCLK-constraint-to-mor.patch
  0012-drm-i915-gt-Detect-if-we-miss-WaIdleLiteRestore.patch
  0013-pinctrl-sunrisepoint-Add-missing-Interrupt-Status-re.patch
  0014-Revert-iwlwifi-mvm-fix-scan-config-command-size.patch
  0015-e1000e-Revert-e1000e-Make-watchdog-use-delayed-work.patch
)
source_armv7h=(
  # RCN patch (CM3 firmware deblobbed and bloatware removed)
  "https://repo.parabola.nu/other/rcn-libre/patches/$rcnver/rcn-libre-$rcnver-$rcnrel.patch"{,.sig}
  # Arch Linux ARM patches
  0001-ARM-atags-add-support-for-Marvell-s-u-boot.patch
  0002-ARM-atags-fdt-retrieve-MAC-addresses-from-Marvell-bo.patch
  0003-SMILE-Plug-device-tree-file.patch
  0004-fix-mvsdio-eMMC-timing.patch
  0005-net-smsc95xx-Allow-mac-address-to-be-set-as-a-parame.patch
  0006-set-default-cubietruck-led-triggers.patch
  0007-exynos4412-odroid-set-higher-minimum-buck2-regulator.patch
  0008-ARM-dove-enable-ethernet-on-D3Plug.patch
  0009-USB-Armory-MkII-support.patch
)
source_x86_64=("https://github.com/anthraxx/linux-hardened/releases/download/$pkgver.$_hrdedrel/linux-hardened-$pkgver.$_hrdedrel.patch"{,.sig})
validpgpkeys=(
  '474402C8C582DAFBE389C427BCB7CF877E7D47A7' # Alexandre Oliva
  '65EEFE022108E2B708CBFCF7F9E712E59AF5F22A' # Daniel Micay
  '6DB9C4B4F0D8C0DC432CF6E4227CA7C556B2BA78' # David P.
  'E240B57E2C4630BA768E2F26FC1B547C8D8172C8' # Levente Polyak
)
sha512sums=('0d0915133864eb031adfc6700066147dcf3e768a50a31c39754950c95ef4fd322dc701cd50af49c403ef0325adfcb07e354d5e46c1be3dcdd719a7a55c963f37'
            'SKIP'
            '0d1d0dea0096f2b7aba13575588dca533386afafbab8c238c478dea88ed3b8259d566a3798a19eed35dbb89d6687ba7d0da351b840f7207f9ca6267aba7b7ac0'
            'SKIP'
            '13cb5bc42542e7b8bb104d5f68253f6609e463b6799800418af33eb0272cc269aaa36163c3e6f0aacbdaaa1d05e2827a4a7c4a08a029238439ed08b89c564bb3'
            'SKIP'
            '7a3716bfe3b9f546da309c7492f3e08f8f506813afeb1c737a474c83313d5c313cf4582b65215c2cfce3b74d9d1021c96e8badafe8f6e5b01fe28d2b5c61ae78'
            'SKIP'
            '267295aa0cea65684968420c68b32f1a66a22d018b9d2b2c1ef14267bcf4cb68aaf7099d073cbfefe6c25c8608bdcbbd45f7ac8893fdcecbf1e621abdfe9ecc1'
            'SKIP'
            '6176a74f5a2a44ba5842d9980f2263d2cfd041bba9f3e42bdc1d8486818e4e528365ce17872b96c6327902665bc0d1ccdb6efe8e4e00dc2653dea02cb5714e87'
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            'f01e7925b262d2874a8a991b1f27d057356a2a384d2012b61be5a631d4e4d7cf87461c8fb9e7f183831f5a829ad204897f1f0545a52df6288a0e04a5c2e31b96'
            '02af4dd2a007e41db0c63822c8ab3b80b5d25646af1906dc85d0ad9bb8bbf5236f8e381d7f91cf99ed4b0978c50aee37cb9567cdeef65b7ec3d91b882852b1af'
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            '5045e58079d58e18cdadef3bb60ff4f565629008449c003452193c77396f5110d972dcdbea87e4193339a44072569e7910c89fef3cb4933de29a609189101184'
            'a59470588e64e24c58a17f15ba5654dd35feba51a0649c331cf6f4361690a55890d2989abac6e58d147ef03756a2d5db91ceb75ac2d34a355c0c29e2b32bcfc3'
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            '954241c5a9582f1d9e1ca462e4a2ec91c59d510bd3401691a31ac7f3335376342a554491a47591bf9f9289a8bab8d0e45dff7e09fcdd941702271a2c3e73e766'
            'c1a431785f5b7357569bfb14322a0263c974d9f848f5e3bd62469f05fd5a9242ddd5ad47c5edb7588f92da8acfa83035f050f9b0036188f005e05b9e8a2876ab'
            '2fe2ee5cd26298d1bc126362f86b01d653d3f9d1592490497f08bea398a1fed5607c6875ecf2ad820f644f89a85d30f7fdbd9f306e670060e943c586646a3a2f'
            'd83e48c9448f48ffe4f587b07dd88fbb7bf3d2137329ac0af734fdea2d0032dd6e76ccf19c26080e14e93856c63aff10cef7ec15acb1276213ac9b20882e9709'
            'c4df83eb037dd58aba7ee8fc77bbcc95a27e0e0905e278821769f3a7790c3cdff726333a8014dd223d7c74d4ce2713df29f647c94014438c128e1009d66c37d6')
sha512sums_x86_64=('41fd086450db5e90695293c1212bac89283df02fce9feaa5c7a7f7a827be51713e62d45fe40001f66636f06ee2389a40369827b6862287b7d6f0a4a65fb0d7f8'
                   'SKIP')
sha512sums_armv7h=('bc449032f904b5ef5c4506124871230587dd72849f7fed1d7e9f6ab6f530c24415dfa0f29b27fa98191a671c9646b6066fbf163b5533774307dc68f610e3958f'
                   'SKIP'
                   'b576a9c40ba59485c350f71b9234d9e71f245e25b26382bd2f67019f3309c3b5705a6020eae0a9dfccacc763fb2056a5937c0a8ff4e64f99ba1d60f0b2acb03f'
                   '85a13a274d4cbaca3ddbe8eaf883f1a1184765f8d09d6d40bb32defbe0876cb0153513e8db8671d7fc053e383ced793b74245ff29364a760e1a52bb36ebc8e85'
                   'f9ce0bb4f06be6f742d8a31384e90fdab1a4686f14d5a8845e0c341dcfa62ae59db933237174223de9b32f9d91f99125c20ede7dff664755f1d42ea0cecdefdb'
                   'b32623904f984118ebdd8ec31816885d73776ed80a68fa23925e67451f28a8f080dd8545307bb2f857435894adfa8b3db7c8a99aa02b8b3f2b5f8e3223d98a47'
                   'd114f1e69504413e81dd67684f5b1ce69aa09d5bc768c7eee96a7d6b7ec47b32cd8f02593c878b0e9091475467de36a3d7c478e34a39148fa849548f53637b84'
                   'bc0c6b1726679498393be8d4c417c62e1f356fe5c617c71ff23532652fdd5f314e5bfc6172eaca79cd4806b81031bf2f879d7d1a6050ad4c616c04e6bdf93c2a'
                   'b13bea6412580325dba0d02cf0dc712e860f659569ffcb968aa4836fdb2882448cfee4659a675a70affccae02c8d2589d80b7239eef5ae7b615162aeaa76f3bb'
                   'cff59f974651614587313674455a968ae5390a5ca825d204f0e2f8de2b422d577b007f5297a398e2afeb33ed0d324d34ad58ff4cd56e645bd4ca9a6bdc1354c5'
                   '54adbec4b6b85cda901df7d2b3eb1f517f10d3528326e60c7afa4b49ccc7cfb43b0d1f574ceb5d7d03c94a0fbcc97c0ef785258292dd26ed46728355da27332c')

_replacesarchkernel=("${_replacesarchkernel[@]/\%/${pkgbase#linux-libre}}")
_replacesoldkernels=("${_replacesoldkernels[@]/\%/${pkgbase#linux-libre}}")
_replacesoldmodules=("${_replacesoldmodules[@]/\%/${pkgbase#linux-libre}}")

case "$CARCH" in
  i686|x86_64) KARCH=x86;;
  armv7h) KARCH=arm;;
esac

export KBUILD_BUILD_HOST=parabola
export KBUILD_BUILD_USER=$pkgbase
export KBUILD_BUILD_TIMESTAMP="$(date -Ru${SOURCE_DATE_EPOCH:+d @$SOURCE_DATE_EPOCH})"

prepare() {
  cd $_srcname

  if [ "${_srcname##*-}" != "$pkgver" ]; then
    msg2 "Applying upstream patch..."
    patch -Np1 -i ../patch-${_srcname##*-}-gnu-$pkgver-gnu
  fi

  msg2 "Adding freedo as boot logo..."
  install -m644 -t drivers/video/logo \
    ../logo_linux_{clut224.ppm,vga16.ppm,mono.pbm}

  msg2 "Setting version..."
  scripts/setlocalversion --save-scmversion
  echo "-$pkgrel" > localversion.10-pkgrel
  echo "${pkgbase#linux-libre}" > localversion.20-pkgname

  if [ "$CARCH" = "armv7h" ]; then
    local src_armv7h
    for src_armv7h in "${source_armv7h[@]}"; do
      src_armv7h="${src_armv7h%%::*}"
      src_armv7h="${src_armv7h##*/}"
      [[ $src_armv7h = *.patch ]] || continue
      msg2 "Applying patch $src_armv7h..."
      patch -Np1 < "../$src_armv7h"
    done
  fi

  if [ "$CARCH" = "x86_64" ]; then
    local src_x86_64
    for src_x86_64 in "${source_x86_64[@]}"; do
      src_x86_64="${src_x86_64%%::*}"
      src_x86_64="${src_x86_64##*/}"
      [[ src_x86_64 = *.patch ]] || continue
      msg2 "Applying patch $src_x86_64..."
      patch -Np1 < "../$src_x86_64"
    done
   else
    local src
    for src in "${source[@]}"; do
      src="${src%%::*}"
      src="${src##*/}"
      [[ $src = *.patch ]] || continue
      msg2 "Applying patch $src..."
      patch -Np1 < "../$src"
    done
  fi

  msg2 "Setting config..."
  cp ../config.$CARCH .config
  make olddefconfig

  make -s kernelrelease > version
  msg2 "Prepared %s version %s" "$pkgbase" "$(<version)"
}

build() {
  cd $_srcname
  if [ "$CARCH" = "armv7h" ]; then
    make zImage modules htmldocs dtbs
  else
    make bzImage modules htmldocs
  fi
}

_package() {
  pkgdesc="The $pkgdesc kernel and modules"
  depends=(coreutils kmod initramfs)
  optdepends=('crda: to set the correct wireless channels of your country'
              'linux-libre-firmware: firmware images needed for some devices'
              'apparmor: to configure and enable mandatory access control for programs'
              'tomoyo-tools: to manage tomoyo userspace tools')
  optdepends_x86_64=('usbctl: deny_new_usb control')
  provides=("${_replacesarchkernel[@]/%/=$pkgver}" "LINUX-ABI_VERSION=$pkgver")
  conflicts=("${_replacesarchkernel[@]}" "${_replacesoldkernels[@]}" "${_replacesoldmodules[@]}")
  replaces=("${_replacesarchkernel[@]}" "${_replacesoldkernels[@]}" "${_replacesoldmodules[@]}")

  cd $_srcname
  local kernver="$(<version)"
  local modulesdir="$pkgdir/usr/lib/modules/$kernver"

  msg2 "Installing boot image..."
  if [ "$CARCH" = "armv7h" ]; then
    make INSTALL_DTBS_PATH="$pkgdir/boot/dtbs/$pkgbase" dtbs_install
  fi
  # systemd expects to find the kernel here to allow hibernation
  # https://github.com/systemd/systemd/commit/edda44605f06a41fb86b7ab8128dcf99161d2344
  install -Dm644 "$(make -s image_name)" "$modulesdir/vmlinuz"

  # Used by mkinitcpio to name the kernel
  echo "$pkgbase" | install -Dm644 /dev/stdin "$modulesdir/pkgbase"

  msg2 "Installing modules..."
  make INSTALL_MOD_PATH="$pkgdir/usr" modules_install

  # remove build and source links
  rm "$modulesdir"/{source,build}

  # armv7h presets only work with ALL_kver=$kernver
  if [ "$CARCH" = "armv7h" ]; then
    backup=("etc/mkinitcpio.d/$pkgbase.preset")

    msg2 "Installing mkinitcpio preset..."
    sed "s|%PKGBASE%|$pkgbase|g;s|%KERNVER%|$kernver|g" ../linux-armv7h.preset \
      | install -Dm644 /dev/stdin "$pkgdir/etc/mkinitcpio.d/$pkgbase.preset"
  fi

  msg2 "Fixing permissions..."
  chmod -Rc u=rwX,go=rX "$pkgdir"
}

_package-headers() {
  pkgdesc="Headers and scripts for building modules for the $pkgdesc kernel"
  provides=("${_replacesarchkernel[@]/%/-headers=$pkgver}")
  conflicts=("${_replacesarchkernel[@]/%/-headers}" "${_replacesoldkernels[@]/%/-headers}")
  replaces=("${_replacesarchkernel[@]/%/-headers}" "${_replacesoldkernels[@]/%/-headers}")

  cd $_srcname
  local builddir="$pkgdir/usr/lib/modules/$(<version)/build"

  msg2 "Installing build files..."
  install -Dt "$builddir" -m644 .config Makefile Module.symvers System.map \
    localversion.* version vmlinux
  install -Dt "$builddir/kernel" -m644 kernel/Makefile
  install -Dt "$builddir/arch/$KARCH" -m644 arch/$KARCH/Makefile
  if [[ $CARCH = i686 ]]; then
    install -Dt "$builddir/arch/$KARCH" -m644 arch/$KARCH/Makefile_32.cpu
  fi
  cp -t "$builddir" -a scripts

  # add objtool for external module building and enabled VALIDATION_STACK option
  if [[ -e tools/objtool/objtool ]]; then
    install -Dt "$builddir/tools/objtool" tools/objtool/objtool
  fi

  # add xfs and shmem for aufs building
  mkdir -p "$builddir"/{fs/xfs,mm}

  msg2 "Installing headers..."
  cp -t "$builddir" -a include
  cp -t "$builddir/arch/$KARCH" -a arch/$KARCH/include
  install -Dt "$builddir/arch/$KARCH/kernel" -m644 arch/$KARCH/kernel/asm-offsets.s

  install -Dt "$builddir/drivers/md" -m644 drivers/md/*.h
  install -Dt "$builddir/net/mac80211" -m644 net/mac80211/*.h

  # http://bugs.archlinux.org/task/13146
  install -Dt "$builddir/drivers/media/i2c" -m644 drivers/media/i2c/msp3400-driver.h

  # http://bugs.archlinux.org/task/20402
  install -Dt "$builddir/drivers/media/usb/dvb-usb" -m644 drivers/media/usb/dvb-usb/*.h
  install -Dt "$builddir/drivers/media/dvb-frontends" -m644 drivers/media/dvb-frontends/*.h
  install -Dt "$builddir/drivers/media/tuners" -m644 drivers/media/tuners/*.h

  msg2 "Installing KConfig files..."
  find . -name 'Kconfig*' -exec install -Dm644 {} "$builddir/{}" \;

  msg2 "Removing unneeded architectures..."
  local arch
  for arch in "$builddir"/arch/*/; do
    [[ $arch = */$KARCH/ ]] && continue
    echo "Removing $(basename "$arch")"
    rm -r "$arch"
  done

  msg2 "Removing documentation..."
  rm -r "$builddir/Documentation"

  # Parabola changes
  # 
  # since we don't want to diverge too much from Arch's PKGBUILD, we'll
  # start marking our changes as such
  if [ "$CARCH" = "armv7h" ]; then
    for i in dove exynos omap2; do
      mkdir -p "$pkgdir/usr/lib/modules/$kernver/build/arch/$KARCH/mach-$i"
      cp -a arch/$KARCH/mach-$i/include "$pkgdir/usr/lib/modules/$kernver/build/arch/$KARCH/mach-$i/"
    done
    for i in omap orion samsung versatile; do
      mkdir -p "$pkgdir/usr/lib/modules/$kernver/build/arch/$KARCH/plat-$i"
      cp -a arch/$KARCH/plat-$i/include "$pkgdir/usr/lib/modules/$kernver/build/arch/$KARCH/plat-$i/"
    done
  fi
  # end of Parabola changes

  msg2 "Removing broken symlinks..."
  find -L "$builddir" -type l -printf 'Removing %P\n' -delete

  msg2 "Removing loose objects..."
  find "$builddir" -type f -name '*.o' -printf 'Removing %P\n' -delete

  msg2 "Stripping build tools..."
  local file
  while read -rd '' file; do
    case "$(file -bi "$file")" in
      application/x-sharedlib\;*)      # Libraries (.so)
        strip -v $STRIP_SHARED "$file" ;;
      application/x-archive\;*)        # Libraries (.a)
        strip -v $STRIP_STATIC "$file" ;;
      application/x-executable\;*)     # Binaries
        strip -v $STRIP_BINARIES "$file" ;;
      application/x-pie-executable\;*) # Relocatable binaries
        strip -v $STRIP_SHARED "$file" ;;
    esac
  done < <(find "$builddir" -type f -perm -u+x ! -name vmlinux -print0)

  msg2 "Adding symlink..."
  mkdir -p "$pkgdir/usr/src"
  ln -sr "$builddir" "$pkgdir/usr/src/$pkgbase"

  msg2 "Fixing permissions..."
  chmod -Rc u=rwX,go=rX "$pkgdir"
}

_package-docs() {
  pkgdesc="Documentation for the $pkgdesc kernel"
  provides=("${_replacesarchkernel[@]/%/-docs=$pkgver}")
  conflicts=("${_replacesarchkernel[@]/%/-docs}" "${_replacesoldkernels[@]/%/-docs}")
  replaces=("${_replacesarchkernel[@]/%/-docs}" "${_replacesoldkernels[@]/%/-docs}")

  cd $_srcname
  local builddir="$pkgdir/usr/lib/modules/$(<version)/build"

  msg2 "Installing documentation..."
  local src dst
  while read -rd '' src; do
    dst="${src#Documentation/}"
    dst="$builddir/Documentation/${dst#output/}"
    install -Dm644 "$src" "$dst"
  done < <(find Documentation -name '.*' -prune -o ! -type d -print0)

  msg2 "Adding symlink..."
  mkdir -p "$pkgdir/usr/share/doc"
  ln -sr "$builddir/Documentation" "$pkgdir/usr/share/doc/$pkgbase"

  msg2 "Fixing permissions..."
  chmod -Rc u=rwX,go=rX "$pkgdir"
}

pkgname=("$pkgbase" "$pkgbase-headers" "$pkgbase-docs")
for _p in "${pkgname[@]}"; do
  eval "package_$_p() {
    $(declare -f "_package${_p#$pkgbase}")
    _package${_p#$pkgbase}
  }"
done

# vim:set ts=8 sts=2 sw=2 et: