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

pkgbase=linux-raspberrypi4
pkgver=6.6.2.rpi2
pkgrel=1
pkgdesc='Raspberry Pi Linux'
url='https://git.kent-dobias.com/system/linux'
arch=(aarch64)
license=(GPL2)
makedepends=(
  bc
  cpio
  gettext
  libelf
  pahole
  perl
  python
  tar
  xz

  dtc
  clang
  llvm
  lld
)
options=('!strip')
_srcname=linux-${pkgver%.*}
_srctag=v${pkgver%.*}-${pkgver##*.}
source=(
  https://cdn.kernel.org/pub/linux/kernel/v${pkgver%%.*}.x/${_srcname}.tar.{xz,sign}
  "linux-$_srctag.patch::$url/rawdiff/?id=$_srctag&id2=v${pkgver%.*}"
  config  # the main kernel config file
)
validpgpkeys=(
  ABAF11C65A2970B130ABE3C479BE3E4300411886  # Linus Torvalds
  647F28654894E3BD457199BE38DBBDC86092693E  # Greg Kroah-Hartman
  A2FF3A36AAA56654109064AB19802F8B0D70FC30  # Jan Alexander Steffens (heftig)
  0E3A444DD0760E65901BF59679E824090BD31086  # Jaron Kent-Dobias
)
# https://www.kernel.org/pub/linux/kernel/v6.x/sha256sums.asc
sha256sums=('73d4f6ad8dd6ac2a41ed52c2928898b7c3f2519ed5dbdb11920209a36999b77e'
            'SKIP'
            'a0fd63ef5b72e88d6b0bfa30e9dd82b0672403ccbe54abb9f0a85ea5277f7197'
            '9b14d545bfda8464701548ccfdecf2f1c301469e6eead5d0733817dc9f48b4ed')
b2sums=('88fc55107834d4308d33547211a031674ffaa8e48e23d6612ba39430292b18073d49271bd3ce8c7be01d8c5668482cb1715071abfd9b1f75b06468a09f8f4eec'
        'SKIP'
        '7621c829269162ee7c0c5c491b553e2539a0a402ac916dae0729b3c89804d9581c8b297f16c0ad59d79e875c92cec99c299afe58956e79ff29265cd3cd3d775d'
        'ef7d78daeb9c2658392e8a0050ef5fdb85dd14c8bc94c26914d9580c344127e29371ab0166ca44e958b6b073dc2e34ec232db9678831c5173baa6b829846e5a7')

export KBUILD_BUILD_HOST=archlinux
export KBUILD_BUILD_USER=$pkgbase
export KBUILD_BUILD_TIMESTAMP="$(date -Ru${SOURCE_DATE_EPOCH:+d @$SOURCE_DATE_EPOCH})"
export ARCH=arm64
export LLVM=1

prepare() {
  cd $_srcname

  echo "Setting version..."
  echo "-$pkgrel" > localversion.10-pkgrel
  echo "${pkgbase#linux}" > localversion.20-pkgname

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

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

  make -s kernelrelease > version
  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/kernel8.img"

  # 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..."
  ZSTD_CLEVEL=19 make INSTALL_MOD_PATH="$pkgdir/usr" INSTALL_MOD_STRIP=1 \
    DEPMOD=/doesnt/exist modules_install  # Suppress depmod

  echo "Installing dtbs..."
  make INSTALL_DTBS_PATH="${pkgdir}/boot/dtbs" dtbs_install
  find "${pkgdir}/boot/dtbs/broadcom" -type f -print0 | xargs -0 mv -t "${pkgdir}/boot"

  # remove build link
  rm "$modulesdir"/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: