# Maintainer: David P. <megver83@parabola.nu>
# Contributor: André Silva <emulatorman@hyperbola.info>
# Contributor: Márcio Silva <coadde@hyperbola.info>
# Contributor: Nicolás Reynolds <fauno@kiwwwi.com.ar>
# Contributor: Sorin-Mihai Vârgolici <smv@yobicore.org>
# Contributor: Michał Masłowski <mtjm@mtjm.eu>
# Contributor: Luke Shumaker <lukeshu@sbcglobal.net>
# Contributor: Luke R. <g4jc@openmailbox.org>

# Based on linux-zen package

pkgbase=linux-libre-pck
_pkgbasever=4.17-gnu
_pkgver=4.17.2-gnu
_pckpatchver=pck1

_replacesarchkernel=('linux-zen')
_replacesoldkernels=()
_replacesoldmodules=()

_srcname=linux-${_pkgbasever%-*}
_archpkgver=${_pkgver%-*}
pkgver=${_pkgver//-/_}.${_pckpatchver}
pkgrel=1
rcnrel=armv7-x3
arch=('i686' 'x86_64' 'armv7h')
url="https://wiki.parabola.nu/PCK"
license=('GPL2')
makedepends=('xmlto' 'kmod' 'inetutils' 'bc' 'libelf')
makedepends_armv7h=('git')
options=('!strip')
source=(
  "https://linux-libre.fsfla.org/pub/linux-libre/releases/${_pkgbasever}/linux-libre-${_pkgbasever}.tar.xz"{,.sign}
  "https://linux-libre.fsfla.org/pub/linux-libre/releases/${_pkgver}/patch-${_pkgbasever}-${_pkgver}.xz"{,.sign}
  "https://repo.parabola.nu/other/pck/patches/${_pkgver}/patch-${_pkgver}-${_pckpatchver}.patch"{,.sig}
  "https://repo.parabola.nu/other/linux-libre/logos/logo_linux_clut224.ppm"{,.sig}
  "https://repo.parabola.nu/other/linux-libre/logos/logo_linux_mono.pbm"{,.sig}
  "https://repo.parabola.nu/other/linux-libre/logos/logo_linux_vga16.ppm"{,.sig}
  # the main kernel config files
  'config.i686' 'config.x86_64' 'config.armv7h'
  # pacman hooks for depmod and initramfs regeneration
  '60-linux.hook' '90-linux.hook'
  # standard config files for mkinitcpio ramdisk
  'linux.preset'
  # armv7h patches
  "https://repo.parabola.nu/other/rcn-libre/patches/${_pkgver%-*}/rcn-libre-${_pkgver%-*}-${rcnrel}.patch"{,.sig}
  '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-power-add-power-sequence-library.patch'
  '0010-usb-core-add-power-sequence-handling-for-USB-devices.patch'
  '0011-ARM-dts-imx6qdl-Enable-usb-node-children-with-reg.patch'
  '0012-ARM-dts-imx6qdl-udoo.dtsi-fix-onboard-USB-HUB-proper.patch'
  '0013-ARM-dts-imx6q-evi-Fix-onboard-hub-reset-line.patch'
  # other patches
  '0001-usb-serial-gadget-no-TTY-hangup-on-USB-disconnect-WI.patch'
  '0002-fix-Atmel-maXTouch-touchscreen-support.patch'
)
validpgpkeys=(
  '474402C8C582DAFBE389C427BCB7CF877E7D47A7' # Alexandre Oliva
  '6DB9C4B4F0D8C0DC432CF6E4227CA7C556B2BA78' # David P.
)
sha512sums=('a09014005d64839e958cabb20dbd50e051907b1afea2f517f41f0a9312fa1bc8447690e64ec0e6488a778be8a7384891c003f39029ff5799f9884482628aadf2'
            'SKIP'
            '3811c646b357e49f8e1c60635cd81ff530b08b4baa3e9d839dae55810cb3eb0118a7075c8866ec4a2e8a97f6ca8fa02bbb5fc176f4b9055d70e3a79bd69186f2'
            'SKIP'
            'c52cf93a21f3111ef338af49f7417fed00938123a01f041a7b8b10b5cf2ef39b6009cc90225a4b26e08ce333764f1775dceb17fb445560401e27396826a7e49a'
            'SKIP'
            '13cb5bc42542e7b8bb104d5f68253f6609e463b6799800418af33eb0272cc269aaa36163c3e6f0aacbdaaa1d05e2827a4a7c4a08a029238439ed08b89c564bb3'
            'SKIP'
            '267295aa0cea65684968420c68b32f1a66a22d018b9d2b2c1ef14267bcf4cb68aaf7099d073cbfefe6c25c8608bdcbbd45f7ac8893fdcecbf1e621abdfe9ecc1'
            'SKIP'
            '7a3716bfe3b9f546da309c7492f3e08f8f506813afeb1c737a474c83313d5c313cf4582b65215c2cfce3b74d9d1021c96e8badafe8f6e5b01fe28d2b5c61ae78'
            'SKIP'
            '8481004fc8bc75ac9cbca943ef9533f8d62c89c2084912c88bb8819ed1f3ebf49ddbad0a48bf6e32b5fe0189735a81b4c6855ed57bb4e1590c3a0fa9e2a3d722'
            '0f861fa05e1ce0f06107551e72b7d0eace144d841903d6c4e43aa488b9cfd8db0bbdea38bd2be780f82d020240b69fd50f3903c32f364f23ae472658df299cba'
            '0e85482ec0c4f2adecbc3cdfddae26b8666477bb85cadfa21e21472c82ac1798af5f0d98009ae73b8aa3530360c6e2bcf9b64f10af05e3db3ad2d0f2017399be'
            '7ad5be75ee422dda3b80edd2eb614d8a9181e2c8228cd68b3881e2fb95953bf2dea6cbe7900ce1013c9de89b2802574b7b24869fc5d7a95d3cc3112c4d27063a'
            '4a8b324aee4cccf3a512ad04ce1a272d14e5b05c8de90feb82075f55ea3845948d817e1b0c6f298f5816834ddd3e5ce0a0e2619866289f3c1ab8fd2f35f04f44'
            '2dc6b0ba8f7dbf19d2446c5c5f1823587de89f4e28e9595937dd51a87755099656f2acec50e3e2546ea633ad1bfd1c722e0c2b91eef1d609103d8abdc0a7cbaf'
            'e48864992df4f40d828a5dc5cb5d35e520b9d498638f0e44d2c2c21dc9b0555d3d211e655cf15bd2e1f5d23594f8f380aa2d8a4293b0cdf4dc6c53020ba6d421'
            'SKIP'
            '8b946f1baa0ecbae0d70781ff67d9cc6ab4abbb8c5768bfd1fbf211de3a3d17f3b9c5a0e5bc588bd90a730051bdfb6b530ab2b30b8142e9adb33f84684b008fe'
            '382ae823f4a1c9105ab9bae6a5d2871eba7f1a888da3a2acdb17cecdbe542613f2f27bb5aaab236d205593bebb57cd91cb7d3de9b70b837f35c3eeb96ace44e3'
            '1f1826e3e1be079f6153e927151d3d0beaed5ed6b5032841d443f25d5af89c0c769d2ba00c5b95cb7338bc7bc04ea65a312116640431e7fbe17e9850f43df894'
            '1c578fa28c25557b2ad647974330c4238f3bd70212bda23d1eac45ca7815b573768ec88d61c7d2b61e59d48f58d25883b2f862124b6bacafde754b8883d6cdb5'
            '0be0572cee24d7d34782f8b0fb2e8597bd7ad1ccc2603e1fd7372f7e8cae9ba5f1e627aaa2960aa4f145032e2ddee11021a226bbcd1439c24a61cb66d82b13a6'
            'c0568844b4eae0ff56ff4293d075b4523ef69e75c2ee0349c3a5460c18a048bafad3f95bad957fc3692c43d7843354ee0603048d17d73c6ac0b97162e1c295c2'
            'dd889b8e64baef3f9fee6a75111f4e1c5c420a8c72e25d89ff0db765bd7fbbae985a7cc6327d8bdb80e32d59e7fca9dc2e0dee2c4811bfdbab32783ce29ea842'
            'a34fc71e4dccadba3bef57cdb5fddb8524771b095a437d0449bc76da031dcc40edb083209f25731b58478a2c713f7245676adfed22a453a74aa85cf245a76944'
            '6cd12c8947a661fda1a1f0f1d84cfaa8d6f66300d4495a59131b7df1ed6b10ce21cddb3291d25f1ebb0798d9b711af68c18b46c34122425b21f946000ab743e8'
            'ae2432ade54b0a703473ed804a08fc6346bf20b427dd56d0bd188bf56398aee3dc61e3e7740353943a7928992073894215f222c24a46fe5440a2058567ba5452'
            '09ee66f32cdc0d17a200e1f87175030a0180158840dec18be45f6329039f08100782a9f30af939a09f94fa4ab11739620c9993078555de5a5b1942affad3047f'
            '9a2ef810d62c2120e6a662f4c58e4644dac83e6fd8317ce7d5641421b89ac60de117204e4fa4024c76a61db495a066802af37c21a9470c536b8d86ae0ac398ba'
            '850e6b8684db4dd6946f69690caaa34a350228d3fed0e08b461835337250c78f511d064fb8fcd2003c5112e68fd9a66b61111c5e3ca4f53b80a0922d8d5f5fba'
            '02af4dd2a007e41db0c63822c8ab3b80b5d25646af1906dc85d0ad9bb8bbf5236f8e381d7f91cf99ed4b0978c50aee37cb9567cdeef65b7ec3d91b882852b1af'
            'b8fe56e14006ab866970ddbd501c054ae37186ddc065bb869cf7d18db8c0d455118d5bda3255fb66a0dde38b544655cfe9040ffe46e41d19830b47959b2fb168')

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

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

prepare() {
  cd ${_srcname}

  # add upstream patch
  if [ "${_pkgbasever}" != "${_pkgver}" ]; then
    patch -p1 -i ../patch-${_pkgbasever}-${_pkgver}
  fi
  
  # add PCK patch
  patch -p1 -i ../patch-${_pkgver}-${_pckpatchver}.patch

  if [ "${CARCH}" = "armv7h" ]; then
    # RCN patch (CM3 firmware deblobbed and AUFS/WireGuard removed)
    # Note: For stability reasons, AUFS has been removed in the RCN patch.
    # We are supporting AUFS in linux-libre-pck through PCK patch.
    # See https://wiki.parabola.nu/PCK for further details.
    git apply -v ../rcn-libre-${_pkgver%-*}-${rcnrel}.patch

    # ALARM patches
    patch -p1 -i ../0001-ARM-atags-add-support-for-Marvell-s-u-boot.patch
    patch -p1 -i ../0002-ARM-atags-fdt-retrieve-MAC-addresses-from-Marvell-bo.patch
    patch -p1 -i ../0003-SMILE-Plug-device-tree-file.patch
    patch -p1 -i ../0004-fix-mvsdio-eMMC-timing.patch
    patch -p1 -i ../0005-net-smsc95xx-Allow-mac-address-to-be-set-as-a-parame.patch
    patch -p1 -i ../0006-set-default-cubietruck-led-triggers.patch
    patch -p1 -i ../0007-exynos4412-odroid-set-higher-minimum-buck2-regulator.patch
    patch -p1 -i ../0008-ARM-dove-enable-ethernet-on-D3Plug.patch
    patch -p1 -i ../0009-power-add-power-sequence-library.patch
    patch -p1 -i ../0010-usb-core-add-power-sequence-handling-for-USB-devices.patch
    patch -p1 -i ../0011-ARM-dts-imx6qdl-Enable-usb-node-children-with-reg.patch
    patch -p1 -i ../0012-ARM-dts-imx6qdl-udoo.dtsi-fix-onboard-USB-HUB-proper.patch
    patch -p1 -i ../0013-ARM-dts-imx6q-evi-Fix-onboard-hub-reset-line.patch
  fi

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

  # add latest fixes from stable queue, if needed
  # http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git

  # maintain the TTY over USB disconnects
  # http://www.coreboot.org/EHCI_Gadget_Debug
  patch -p1 -i ../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
  patch -p1 -i ../0002-fix-Atmel-maXTouch-touchscreen-support.patch

  cat ../config.${CARCH} - >.config <<END
CONFIG_LOCALVERSION="${_kernelname}"
CONFIG_LOCALVERSION_AUTO=n
END

  # append pkgrel to extraversion and empty localversion
  sed -e "/^EXTRAVERSION = -gnu/s/-gnu.*/-gnu-${pkgrel}/" \
      -e "/^EXTRAVERSION =/aLOCALVERSION =" \
      -i Makefile

  # don't run depmod on 'make install'. We'll do this ourselves in packaging
  sed -i '2iexit 0' scripts/depmod.sh

  # get kernel version
  make prepare

  # load configuration
  # Configure the kernel. Replace the line below with one of your choice.
  #make menuconfig # CLI menu for configuration
  #make nconfig # new CLI menu for configuration
  #make xconfig # X-based configuration
  #make oldconfig # using old config from previous kernel version
  # ... or manually edit .config

  # rewrite configuration
  yes "" | make config >/dev/null
}

build() {
  cd ${_srcname}

  if [ "${CARCH}" = "armv7h" ]; then
    make ${MAKEFLAGS} LOCALVERSION= zImage modules dtbs
  elif [ "${CARCH}" = "x86_64" ] || [ "${CARCH}" = "i686" ]; then
    make ${MAKEFLAGS} LOCALVERSION= bzImage modules
  fi
}

_package() {
  pkgdesc="The ${pkgbase^} kernel and modules with a handful of awesome features not merged into mainline [AUFS, BFQ, BFS, UKSM, TuxOnIce]"
  [ "${pkgbase}" = "linux-libre" ] && groups=('base' 'base-openrc')
  depends=('coreutils' 'linux-libre-firmware' 'kmod' 'mkinitcpio>=0.7')
  optdepends=('crda: to set the correct wireless channels of your country')
  provides=("${_replacesarchkernel[@]/%/=${_archpkgver}}" "LINUX-ABI_VERSION=${_pkgver%%-*}")
  conflicts=("${_replacesarchkernel[@]}" "${_replacesoldkernels[@]}" "${_replacesoldmodules[@]}")
  replaces=("${_replacesarchkernel[@]}" "${_replacesoldkernels[@]}" "${_replacesoldmodules[@]}")
  backup=("etc/mkinitcpio.d/${pkgbase}.preset")
  install=linux.install

  cd ${_srcname}

  # get kernel version
  _kernver="$(make kernelrelease)"
  _basekernel=${_kernver%%-*}
  _basekernel=${_basekernel%.*}

  mkdir -p "${pkgdir}"/{boot,usr/lib/modules}
  make INSTALL_MOD_PATH="${pkgdir}/usr" modules_install
  if [ "${CARCH}" = "armv7h" ]; then
    make LOCALVERSION= INSTALL_DTBS_PATH="${pkgdir}/boot/dtbs/${pkgbase}" dtbs_install
    cp arch/$KARCH/boot/zImage "${pkgdir}/boot/vmlinuz-${pkgbase}"
  elif [ "${CARCH}" = "x86_64" ] || [ "${CARCH}" = "i686" ]; then
    cp arch/$KARCH/boot/bzImage "${pkgdir}/boot/vmlinuz-${pkgbase}"
  fi

  # make room for external modules
  local _extramodules="extramodules-${_basekernel}${_kernelname}"
  ln -s "../${_extramodules}" "${pkgdir}/usr/lib/modules/${_kernver}/extramodules"

  # add real version for building modules and running depmod from hook
  echo "${_kernver}" |
    install -Dm644 /dev/stdin "${pkgdir}/usr/lib/modules/${_extramodules}/version"

  # remove build and source links
  rm "${pkgdir}"/usr/lib/modules/${_kernver}/{source,build}

  # now we call depmod...
  depmod -b "${pkgdir}/usr" -F System.map "${_kernver}"

  if [ "${CARCH}" = "x86_64" ] || [ "${CARCH}" = "i686" ]; then
    # add vmlinux
    install -Dt "${pkgdir}/usr/lib/modules/${_kernver}/build" -m644 vmlinux
  fi

  # sed expression for following substitutions
  if [ "${CARCH}" = "armv7h" ]; then
  local _subst="
    s|/boot/vmlinuz-%PKGBASE%|${_kernver}|g
    s|%PKGBASE%|${pkgbase}|g
    s|%KERNVER%|${_kernver}|g
    s|%EXTRAMODULES%|${_extramodules}|g
  "
  elif [ "${CARCH}" = "x86_64" ] || [ "${CARCH}" = "i686" ]; then
  local _subst="
    s|%PKGBASE%|${pkgbase}|g
    s|%KERNVER%|${_kernver}|g
    s|%EXTRAMODULES%|${_extramodules}|g
  "
  fi

  # hack to allow specifying an initially nonexisting install file
  sed "${_subst}" "${startdir}/${install}" > "${startdir}/${install}.pkg"
  true && install=${install}.pkg

  # install mkinitcpio preset file
  sed "${_subst}" ../linux.preset |
    install -Dm644 /dev/stdin "${pkgdir}/etc/mkinitcpio.d/${pkgbase}.preset"

  # install pacman hooks
  sed "${_subst}" ../60-linux.hook |
    install -Dm644 /dev/stdin "${pkgdir}/usr/share/libalpm/hooks/60-${pkgbase}.hook"
  sed "${_subst}" ../90-linux.hook |
    install -Dm644 /dev/stdin "${pkgdir}/usr/share/libalpm/hooks/90-${pkgbase}.hook"
}

_package-headers() {
  pkgdesc="Header files and scripts for building modules for ${pkgbase^} kernel"
  provides=("${_replacesarchkernel[@]/%/-headers=${_archpkgver}}")
  conflicts=("${_replacesarchkernel[@]/%/-headers}" "${_replacesoldkernels[@]/%/-headers}")
  replaces=("${_replacesarchkernel[@]/%/-headers}" "${_replacesoldkernels[@]/%/-headers}")
  
  cd ${_srcname}
  local _builddir="${pkgdir}/usr/lib/modules/${_kernver}/build"

  install -Dt "${_builddir}" -m644 Makefile .config Module.symvers
  install -Dt "${_builddir}/kernel" -m644 kernel/Makefile

  mkdir "${_builddir}/.tmp_versions"

  cp -t "${_builddir}" -a include scripts

  install -Dt "${_builddir}/arch/${KARCH}" -m644 arch/${KARCH}/Makefile
  install -Dt "${_builddir}/arch/${KARCH}/kernel" -m644 arch/${KARCH}/kernel/asm-offsets.s

  if [[ ${CARCH} = i686 ]]; then
    install -t "${_builddir}/arch/${KARCH}" -m644 arch/${KARCH}/Makefile_32.cpu
  fi

  cp -t "${_builddir}/arch/${KARCH}" -a arch/${KARCH}/include

  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

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

  # copy in Kconfig files
  find . -name Kconfig\* -exec install -Dm644 {} "${_builddir}/{}" \;

  # 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

  # remove unneeded architectures
  local _arch
  for _arch in "${_builddir}"/arch/*/; do
    [[ ${_arch} == */${KARCH}/ ]] && continue
    rm -r "${_arch}"
  done

  # remove files already in linux-docs package
  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

  # remove now broken symlinks
  find -L "${_builddir}" -type l -printf 'Removing %P\n' -delete

  # Fix permissions
  chmod -R u=rwX,go=rX "${_builddir}"

  # strip scripts directory
  local _binary _strip
  while read -rd '' _binary; do
    case "$(file -bi "${_binary}")" in
      *application/x-sharedlib*)  _strip="${STRIP_SHARED}"   ;; # Libraries (.so)
      *application/x-archive*)    _strip="${STRIP_STATIC}"   ;; # Libraries (.a)
      *application/x-executable*) _strip="${STRIP_BINARIES}" ;; # Binaries
      *) continue ;;
    esac
    /usr/bin/strip ${_strip} "${_binary}"
  done < <(find "${_builddir}/scripts" -type f -perm -u+w -print0 2>/dev/null)
}

_package-docs() {
  pkgdesc="Kernel hackers manual - HTML documentation that comes with the ${pkgbase^} kernel"
  provides=("${_replacesarchkernel[@]/%/-docs=${_archpkgver}}")
  conflicts=("${_replacesarchkernel[@]/%/-docs}" "${_replacesoldkernels[@]/%/-docs}")
  replaces=("${_replacesarchkernel[@]/%/-docs}" "${_replacesoldkernels[@]/%/-docs}")
  
  cd ${_srcname}
  local _builddir="${pkgdir}/usr/lib/modules/${_kernver}/build"

  mkdir -p "${_builddir}"
  cp -t "${_builddir}" -a Documentation

  # Fix permissions
  chmod -R u=rwX,go=rX "${_builddir}"
}

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: