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# Maintainer: Jaron Kent-Dobias <jaron@kent-dobias.com>
# Contributor: Vasily Khoruzhick <anarsoul@gmail.com>
# Contributor: Jan Alexander Steffens (heftig) <heftig@archlinux.org>

pkgbase=linux-pinebookpro
pkgver=6.3.1.megi1
pkgrel=1
pkgdesc='Pinebook Pro Linux'
_srctag=v${pkgver%.*}-${pkgver##*.}
url="https://git.kent-dobias.com/system/linux/log/?h=$_srctag"
arch=(aarch64)
license=(GPL2)
makedepends=(
  bc
  cpio
  gettext
  git
  libelf
  pahole
  perl
  tar
  xz

  dtc
  clang
  llvm
  lld
)
options=('!strip')
_srcname=kentdobias-linux
source=(
  "$_srcname::git+https://git.kent-dobias.com/system/linux?signed#tag=$_srctag"
  config  # the main kernel config file
)
validpgpkeys=(
  ABAF11C65A2970B130ABE3C479BE3E4300411886  # Linus Torvalds
  647F28654894E3BD457199BE38DBBDC86092693E  # Greg Kroah-Hartman
  A2FF3A36AAA56654109064AB19802F8B0D70FC30  # Jan Alexander Steffens (heftig)
  C7E7849466FE2358343588377258734B41C31549  # David Runge <dvzrv@archlinux.org>
  0E3A444DD0760E65901BF59679E824090BD31086  # Jaron Kent-Dobias
)
b2sums=('SKIP'
        'c829341050f4482c5430bb7c735c2a6ffa62d09daf4ba774985c3bf60bf8f1991e935d98dee5067a2753dd3f0bce11521e8b1c3ba6957b7172a976bf3e36a89a')

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

_make() {
  test -s version
  make ARCH=arm64 LLVM=1 KERNELRELEASE="$(<version)" "$@"
}

prepare() {
  cd $_srcname

  echo "Setting version..."
  echo "-$pkgrel" > localversion.10-pkgrel
  echo "${pkgbase#linux}" > localversion.20-pkgname
  make ARCH=arm64 LLVM=1 defconfig
  make ARCH=arm64 LLVM=1 -s kernelrelease > version
#  make mrproper

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

  echo "Setting config..."
  cp ../config .config
  _make olddefconfig
  diff -u ../config .config || :

  echo "Prepared $pkgbase version $(<version)"
}

build() {
  cd $_srcname
  _make all
#  $_make htmldocs
}

_package() {
  pkgdesc="The $pkgdesc kernel and modules"
  depends=(
    coreutils
    initramfs
    kmod
  )
  optdepends=(
    'wireless-regdb: to set the correct wireless channels of your country'
    'linux-firmware: firmware images needed for some devices'
  )
  provides=(
    KSMBD-MODULE
    VIRTUALBOX-GUEST-MODULES
    WIREGUARD-MODULE
  )
  replaces=(
    virtualbox-guest-modules-arch
    wireguard-arch
  )

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

  echo "Installing boot image..."
  install -Dm644 arch/arm64/boot/Image "${pkgdir}/boot/Image"

  # 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"

  echo "Installing modules..."
  _make INSTALL_MOD_PATH="$pkgdir/usr" INSTALL_MOD_STRIP=1 \
    DEPMOD=/doesnt/exist modules_install  # Suppress depmod

  echo "Installing dtbs..."
  _make INSTALL_DTBS_PATH="${pkgdir}/boot/dtbs" dtbs_install

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

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

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