#mainteiner CarlosRFS <carlosrfs99@gmail.com>

pkgbase=linux
pkgver=5.19.0.arch1
pkgrel=1
pkgdesc='Linux'
_srctag=riscv/d1-wip
url="https://github.com/smaeul/linux/commits/$_srctag"
arch=(riscv64)
license=(GPL2)
makedepends=(
  bc libelf pahole cpio perl tar xz
  xmlto python-sphinx python-sphinx_rtd_theme graphviz imagemagick texlive-latexextra
  git
)
options=('!strip')
_srcname=linux
DLAGENTS='linux::/usr/bin/git clone --depth 1 https://github.com/smaeul/linux.git -b riscv/d1-wip'
source=(
  "$_srcname::linux://linux"
)
noextract=('linux:')
validpgpkeys=(
  'ABAF11C65A2970B130ABE3C479BE3E4300411886'  # Linus Torvalds
  '647F28654894E3BD457199BE38DBBDC86092693E'  # Greg Kroah-Hartman
  'A2FF3A36AAA56654109064AB19802F8B0D70FC30'  # Jan Alexander Steffens (heftig)
  'C7E7849466FE2358343588377258734B41C31549'  # David Runge <dvzrv@archlinux.org>
)
sha256sums=('SKIP')

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

prepare() {
  ls
  mv "${srcdir}/../linux:/$pkgname" "${srcdir}/$pkgname"
  cd ${pkgname}

  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..."
  echo "CONFIG_LOCALVERSION=${KERNEL_RELEASE}" >> arch/riscv/configs/nezha_defconfig
            # enable WiFi
            echo 'CONFIG_WIRELESS=y' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_CFG80211=m' >> arch/riscv/configs/nezha_defconfig
            # enable /proc/config.gz
            echo 'CONFIG_IKCONFIG_PROC=y' >> arch/riscv/configs/nezha_defconfig
            # There is no LAN. so let there be USB-LAN
            echo 'CONFIG_USB_NET_DRIVERS=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_CATC=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_KAWETH=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_PEGASUS=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_RTL8150=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_RTL8152=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_LAN78XX=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_USBNET=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_AX8817X=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_AX88179_178A=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_CDCETHER=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_CDC_EEM=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_CDC_NCM=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_HUAWEI_CDC_NCM=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_CDC_MBIM=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_DM9601=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_SR9700=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_SR9800=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_SMSC75XX=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_SMSC95XX=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_GL620A=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_NET1080=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_PLUSB=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_MCS7830=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_RNDIS_HOST=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_CDC_SUBSET_ENABLE=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_CDC_SUBSET=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_ALI_M5632=y' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_AN2720=y' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_BELKIN=y' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_ARMLINUX=y' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_EPSON2888=y' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_KC2190=y' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_ZAURUS=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_CX82310_ETH=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_KALMIA=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_QMI_WWAN=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_INT51X1=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_IPHETH=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_SIERRA_NET=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_VL600=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_CH9200=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_NET_AQC111=m' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_USB_RTL8153_ECM=m' >> arch/riscv/configs/nezha_defconfig
            # enable systemV IPC (needed by fakeroot during makepkg)
            echo 'CONFIG_SYSVIPC=y' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_SYSVIPC_SYSCTL=y' >> arch/riscv/configs/nezha_defconfig
            # enable swap
            echo 'CONFIG_SWAP=y' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_ZSWAP=y' >> arch/riscv/configs/nezha_defconfig
	    #enable Cedrus VPU Drivers
            echo 'CONFIG_MEDIA_SUPPORT=y' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_MEDIA_CONTROLLER=y' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_MEDIA_CONTROLLER_REQUEST_API=y' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_V4L_MEM2MEM_DRIVERS=y' >> arch/riscv/configs/nezha_defconfig
            echo 'CONFIG_VIDEO_SUNXI_CEDRUS=y' >> arch/riscv/configs/nezha_defconfig
  make ARCH=riscv nezha_defconfig

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

build() {
  cd ${pkgname}
  make htmldocs all
}

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

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

  echo "Installing 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

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

_package-headers() {
  pkgdesc="Headers and scripts for building modules for the $pkgdesc kernel"
  depends=(pahole)

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

  echo "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 "$builddir/arch/riscv" -m644 arch/riscv/Makefile
  cp -t "$builddir" -a scripts

  # required when STACK_VALIDATION is enabled
  install -Dt "$builddir/tools/objtool" tools/objtool/objtool

  # required when DEBUG_INFO_BTF_MODULES is enabled
  install -Dt "$builddir/tools/bpf/resolve_btfids" tools/bpf/resolve_btfids/resolve_btfids

  echo "Installing headers..."
  cp -t "$builddir" -a include
  cp -t "$builddir/arch/riscv" -a arch/riscv/include
  install -Dt "$builddir/arch/riscv/kernel" -m644 arch/riscv/kernel/asm-offsets.s

  install -Dt "$builddir/drivers/md" -m644 drivers/md/*.h
  install -Dt "$builddir/net/mac80211" -m644 net/mac80211/*.h

  # https://bugs.archlinux.org/task/13146
  install -Dt "$builddir/drivers/media/i2c" -m644 drivers/media/i2c/msp3400-driver.h

  # https://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

  # https://bugs.archlinux.org/task/71392
  install -Dt "$builddir/drivers/iio/common/hid-sensors" -m644 drivers/iio/common/hid-sensors/*.h

  echo "Installing KConfig files..."
  find . -name 'Kconfig*' -exec install -Dm644 {} "$builddir/{}" \;

  echo "Removing unneeded architectures..."
  local arch
  for arch in "$builddir"/arch/*/; do
    [[ $arch = */riscv64/ ]] && continue
    echo "Removing $(basename "$arch")"
    rm -r "$arch"
  done

  echo "Removing documentation..."
  rm -r "$builddir/Documentation"

  echo "Removing broken symlinks..."
  find -L "$builddir" -type l -printf 'Removing %P\n' -delete

  echo "Removing loose objects..."
  find "$builddir" -type f -name '*.o' -printf 'Removing %P\n' -delete

  echo "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)

  echo "Stripping vmlinux..."
  strip -v $STRIP_STATIC "$builddir/vmlinux"

  echo "Adding symlink..."
  mkdir -p "$pkgdir/usr/src"
  ln -sr "$builddir" "$pkgdir/usr/src/$pkgbase"
}

_package-docs() {
  pkgdesc="Documentation for the $pkgdesc kernel"

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

  echo "Installing documentation..."
  local src dst
  while read -rd '' src; do
    dst="${src#Documentation/}"
    dst="$builddir/Documentation/${dst#output/}"
    install -Dm644 "$src" "$dst"
  done < <(find Documentation -name '.*' -prune -o ! -type d -print0)

  echo "Adding symlink..."
  mkdir -p "$pkgdir/usr/share/doc"
  ln -sr "$builddir/Documentation" "$pkgdir/usr/share/doc/$pkgbase"
}

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: