# Maintainer : Daniel Bermond < gmail-com: danielbermond >
# Contributor: Jonas Heinrich <onny@project-insanity.org>
# Contributor: André Silva <emulatorman@riseup.net>
# Contributor: Márcio Silva <coadde@riseup.net>
# Contributor (Parabola): Nicolás Reynolds <fauno@kiwwwi.com.ar>
# Contributor (Parabola): Sorin-Mihai Vârgolici <smv@yobicore.org>
# Contributor (Parabola): Michał Masłowski <mtjm@mtjm.eu>
# Contributor (Parabola): Luke Shumaker <lukeshu@sbcglobal.net>
# Contributor (Parabola): Luke R. <g4jc@openmailbox.org>

# 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
pkgver=5.3.13_gnu
pkgrel=1
pkgdesc='Linux-libre'
rcnver=5.3.10
rcnrel=armv7-x15
url='https://linux-libre.fsfla.org/'
arch=(i686 x86_64 armv7h)
license=(GPL2)
makedepends=(
  xmlto kmod inetutils bc libelf
  python-sphinx python-sphinx_rtd_theme graphviz imagemagick
)
makedepends_armv7h=(uboot-tools vboot-utils dtc) # for linux-libre-chromebook
options=('!strip')
_srcname=linux-5.3
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/${pkgver//_/-}/patch-${_srcname##*-}-gnu-${pkgver//_/-}.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
  "kernel"{.its,.keyblock,_data_key.vbprivk} # files for signing Chromebooks kernels

  # 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

  # Arch's custom linux patches
  0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch
  0002-Bluetooth-hidp-Fix-assumptions-on-the-return-value-o.patch
)
source_armv7h=(
  # armv7h patches, put in the source_armv7h variable just for a more comfortable loop patching

  # RCN patch (CM3 firmware deblobbed and AUFS/WireGuard removed)
  # Note: For stability reasons, AUFS has been removed in the RCN patch.
  # We are supporting AUFS in linux-libre-pck through PCK patch.
  # See https://wiki.parabola.nu/PCK for further details.
  "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
)
validpgpkeys=(
  '474402C8C582DAFBE389C427BCB7CF877E7D47A7' # Alexandre Oliva
  '6DB9C4B4F0D8C0DC432CF6E4227CA7C556B2BA78' # David P.
)
sha512sums=('85d83c973ef96ab414354414da70ab3e1c3df19c3088458498cec1594952878b7967a8988bd9e36d4e728cc573a36e6eac056dbcab2f9aa742f18cbb4fb3164f'
            'SKIP'
            '3e9c95825f6852a0721a940c80b01b9772c17ae1680c1ce5a151e4f5b577a4a50f030aa0f2fbbc2b53b898b081bf33e67bfdeb513fe5535f95c4b479452264c3'
            'SKIP'
            '13cb5bc42542e7b8bb104d5f68253f6609e463b6799800418af33eb0272cc269aaa36163c3e6f0aacbdaaa1d05e2827a4a7c4a08a029238439ed08b89c564bb3'
            'SKIP'
            '7a3716bfe3b9f546da309c7492f3e08f8f506813afeb1c737a474c83313d5c313cf4582b65215c2cfce3b74d9d1021c96e8badafe8f6e5b01fe28d2b5c61ae78'
            'SKIP'
            '267295aa0cea65684968420c68b32f1a66a22d018b9d2b2c1ef14267bcf4cb68aaf7099d073cbfefe6c25c8608bdcbbd45f7ac8893fdcecbf1e621abdfe9ecc1'
            'SKIP'
            'cf0eb007e3fef712d0aa8cfc4d26fb1ffaa83f359ab1111b455cedeae29dee5a6a61e032657c776deaad5d400241a0963cb4a8b0725e096847fac21963e6e973'
            'ef6f0518b61f06da233118684998e10f07f221a2d4658ef82c161ebb354e82f263bbbb4e9ebf210103d693c428065375b64a13fdb990094a3e04868aa700ccc6'
            '0e80454eb0672d10d9497ef716a6474d3efc6ccdc4052fbd28146176167ca0d292124fc19e2b348bd31433dc046ed95ea40d61b49237ad72c6230d76fadb3419'
            '03cdaa19ff754c1b16cbfe8b08d38fed2f21c688a6e00d331ca53c4ef937c1cd3fdcfca2241d136238f220a87f3da04c1e6e192d262b4505f8bff3ddcbc8b9ad'
            '167bc73c6c1c63931806238905dc44c7d87c5a5c0f6293159f2133dfe717fb44081018d810675716d1605ec7dff5e8333b87b19e09e2de21d0448e447437873b'
            'bb6718984a7357c9b00c37e4788480e5b8b75018c172ecc1441bc3fc5d2d42444eb5d8c7f9d2e3a7d6fed6d03acb565e3c0559486e494c40a7fe6bd0570c9ede'
            '143dea30c6da00e504c99984a98a0eb2411f558fcdd9dfa7f607d6c14e9e7dffff9cb00121d9317044b07e3e210808286598c785ee854084b993ec9cb14d8232'
            '02af4dd2a007e41db0c63822c8ab3b80b5d25646af1906dc85d0ad9bb8bbf5236f8e381d7f91cf99ed4b0978c50aee37cb9567cdeef65b7ec3d91b882852b1af'
            'b8fe56e14006ab866970ddbd501c054ae37186ddc065bb869cf7d18db8c0d455118d5bda3255fb66a0dde38b544655cfe9040ffe46e41d19830b47959b2fb168'
            '5c48b0092ab6a31453e27e6345347fd2d066e1c306c4c8a9144260bf37d0d13879b5cfe688906a06627d39a40a37e229e5300a479b2c9159e93e05ea7adc6b0a'
            'b07d84cac1c784f5652a4681efd54ef89ce9cb0778bd2a633709b7150f9fb59db978dc290b92bcb69b8d211471c22a0be2a81a129318cd7efff601a3c591483c')
sha512sums_armv7h=('ffb94962db829fb1f86e3da3558f469dd51d12bb352f17a82daa67a03497b52409b2f53e52eb36569e7be8b3fa7460c3b3ce3ebe3589e8a202c45cbbde0d3162'
                   'SKIP'
                   '9724026836feefa67acb9644acf3ee89d465734af50b6637b8232b705c6259035d485cd1a1f0f08d189921eb75ad095b3e1f7f7e5e0e52302352c453f03ac820'
                   '41f9f7d58bb29311e09dd58105d173fb2e2a955c0e7d632bc8788c2f0a803a45281dfd2be1712d6ec93b58b9f440f3f8398f234bd7ded1c49b1c33b328478203'
                   '9d29a3d22aae6533d048280f3a1bf1cc325e1c1304268b6d129a29e1d74c105c55077306e6350105a9445e2a1de621cb6759b71177badbaa0e384e9800427acf'
                   'c7b99f64d148b7ef140d3621b3d3fa922739f2a393ce99038d0dd539d0bb8e2e3ffe92ccbc3fe9d8dea5f3f4ddc433eb6ddd9d46939f04f38cd82ee32f5d53ec'
                   '618d84d26338dfeb15c88fc6d9d7c68d0151f50e000032b2d21d30d05ec62f2d36ef5a50d3671e4e9777a2db6c40d71878a9fcc89420fbe9f59e7e30406c9064'
                   '464d1622fd79d7f6811799bd27e16204979db3c372e03aae8285fbff584d39928d7ddb5da8139f4ce535c70406fcf73cc20dd44ffe83fd7cda36ca915fb0b931'
                   '114067bfafa63bbb3aef73d05909b520355a757d15aa2ce07c6bfeae200192282782980b3d8963c0d984cf0c410d2613639444dffe21007ae6a7359be6a5ff76'
                   'c1191d35ef8ce8ffaa817e952916dfe5fff45758c13394bb3fc7eba7376fd2cdc94ef32a2a54d431d8258da10fa7ce2284b092b6871e9b357b71ac0144a655b8'
                   'e8e73026ac02645b5914ac97bfada4c94f48e490331a28960ee5939feb18dc5630831748cdd210b27d91590322cf564d3265feee9a8246a373cc117cd520c10d')

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

prepare() {
  cd $_srcname

  if [ "${_srcname##*-}-gnu" != "${pkgver//_/-}" ]; then
    msg2 "Applying upstream patch..."
    patch -p1 -i ../patch-${_srcname##*-}-gnu-${pkgver//_/-}
  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}" > 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

  local src
  for src in "${source[@]}"; do
    src="${src%%::*}"
    src="${src##*/}"
    [[ $src = *.patch ]] || continue
    msg2 "Applying patch $src..."
    patch -Np1 < "../$src"
  done

  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 $pkgdesc kernel and modules"
  depends=(coreutils kmod initramfs)
  optdepends=('crda: to set the correct wireless channels of your country'
              'linux-libre-firmware: firmware images needed for some devices')
  provides=("LINUX-ABI_VERSION=${pkgver%%_*}")

  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="Header files and scripts for building modules for $pkgdesc kernel"

  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="Kernel hacker's manual for the $pkgdesc kernel"

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

  msg2 "Installing documentation..."
  mkdir -p "$builddir"
  cp -t "$builddir" -a Documentation

  msg2 "Removing unneeded files..."
  rm -rv "$builddir"/Documentation/{,output/}.[^.]*

  msg2 "Moving HTML docs..."
  local src dst
  while read -rd '' src; do
    dst="$builddir/Documentation/${src#$builddir/Documentation/output/}"
    mkdir -p "${dst%/*}"
    mv "$src" "$dst"
    rmdir -p --ignore-fail-on-non-empty "${src%/*}"
  done < <(find "$builddir/Documentation/output" -type f -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"
}

_package-chromebook() {
  pkgdesc="Kernel image sign for $pkgdesc - Chromebooks"
  depends=(linux-libre=${pkgver%%_*})
  provides=("${_replacesarchkernel[@]/%/-armv7-chromebook=${pkgver%%_*}}")
  conflicts=("${_replacesarchkernel[@]/%/-armv7-chromebook}" "${_replacesoldkernels[@]/%/-armv7-chromebook}")
  replaces=("${_replacesarchkernel[@]/%/-armv7-chromebook}" "${_replacesoldkernels[@]/%/-armv7-chromebook}")
  install=linux-chromebook.install

  cd $_srcname

  cp ../kernel.its .
  mkimage -D "-I dts -O dtb -p 2048" -f kernel.its kernel.itb
  dd if=/dev/zero of=bootloader.bin bs=512 count=1
  echo 'console=tty0 init=/sbin/init root=PARTUUID=%U/PARTNROFF=1 rootwait rw noinitrd' > cmdline

  msg2 "Creating kernel sign..."
  vbutil_kernel \
    --pack vmlinux.kpart \
    --version 1 \
    --vmlinuz kernel.itb \
    --arch arm \
    --keyblock ../kernel.keyblock \
    --signprivate ../kernel_data_key.vbprivk \
    --config cmdline \
    --bootloader bootloader.bin

  msg2 "Installing kernel sign..."
  mkdir -p "$pkgdir/boot"
  cp vmlinux.kpart "$pkgdir/boot"
}

pkgname=("$pkgbase" "$pkgbase-headers" "$pkgbase-docs")
[[ $CARCH = armv7h ]] && pkgname+=("$pkgbase-chromebook")
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: