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

pkgbase=linux-pinephone
pkgver=5.19.1.pp1
pkgrel=1
pkgdesc='Pinephone Linux'
_srctag=v${pkgver%.*}-${pkgver##*.}
url="https://git.kent-dobias.com/system/linux/log/?h=$_srctag"
arch=(aarch64)
license=(GPL2)
makedepends=(
  bc kmod libelf pahole
  xmlto python-sphinx python-sphinx_rtd_theme graphviz imagemagick
  git
  dtc
  clang llvm lld
)
options=('!strip')
_srcname=pinephone-linux
source=(
  "$_srcname::git+https://git.kent-dobias.com/system/linux?signed#tag=$_srctag"
  config
)
validpgpkeys=(
  'ABAF11C65A2970B130ABE3C479BE3E4300411886'  # Linus Torvalds
  '647F28654894E3BD457199BE38DBBDC86092693E'  # Greg Kroah-Hartman
  '8218F88849AAC522E94CF470A5E9288C4FA415FA'  # Jan Alexander Steffens (heftig)
  '0E3A444DD0760E65901BF59679E824090BD31086'  # Jaron Kent-Dobias
)
sha256sums=('SKIP'
            '8e464927634b4b4d4fba0c2e3956b4da537ba75d53d1ed1f00b7f6ffba1485db')

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

_make='make ARCH=arm64 LLVM=1'

prepare() {
  cd $_srcname

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

  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

  $_make -s kernelrelease > version
  echo "Prepared $pkgbase version $(<version)"
}

build() {
  cd $_srcname
  $_make all
  # Generate device tree blobs with symbols to support applying device tree overlays in U-Boot
#  $_make htmldocs
}

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

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

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

  # 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 modules_install

  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: