PKGBUILD

# Maintainer: Carl Perry <caperry@edolnx.net>

pkgbase=linux-edolnx-sifive-p550-dgpu
_variant=edolnx-dgpu
pkgver=6.6.21
epoch=01 #Based on edolnx image version
pkgrel=1
_tag=53bc59aaa58961ab8c22b175449948fc2d7df599
_desc='Linux 6.6.x (-edolnx) for SiFive HiFive P550 Premier Board'
_srcname=riscv-linux-$_tag
url="https://github.com/sifive/riscv-linux"
arch=(riscv64)
license=('GPL2')
makedepends=(bc libelf pahole cpio perl tar xz gcc)
options=('!strip')
source=("https://github.com/sifive/riscv-linux/archive/$_tag.tar.gz"
        'linux-riscv-dts-hifive-premier-p550-Enable-I2C1.patch'
        'config')

sha256sums=('1b11c63074959accf51047843e81af529dd0f1c31d392e812ac2178bb2bd514c'
            '59e0bc42c658c403970b3d7344f53709519c33a39c0e097d9d8b302f990919d8'
            '192a8fa3f953d500a180125a89c75a687317bf2142940ca5ec035a81cfc73137')

prepare() {

  cd $_srcname

  local src
  for src in $(ls ../linux-*.patch); do
    echo "Applying patch $src..."
    patch -Np1 <"../$src"
  done

  echo "Setting version..."
  echo "-${_variant}" >localversion.10-variant
  echo "-${pkgver}" >localversion.20-pkgver
  echo "-$pkgrel" >localversion.30-pkgrel

  echo "Setting config..."
  cp ../config .config
  make -j $(nproc) ARCH=riscv CC="${CROSS_COMPILE:-}gcc" olddefconfig
  cp .config ../../config.new

  make -j $(nproc) ARCH=riscv CC="${CROSS_COMPILE:-}gcc" -s kernelrelease >version
  echo "Prepared $pkgbase version $(<version)"

}

build() {
  cd $_srcname
  make -j $(nproc) ARCH=riscv CC="${CROSS_COMPILE:-}gcc" all

}

_package() {
  pkgdesc="The $_desc kernel and modules"
  depends=(coreutils kmod mkinitcpio)
  optdepends=('wireless-regdb: to set the correct wireless channels of your country'
    'linux-firmware: firmware images needed for some devices')
  provides=("linux=${pkgver}" "WIREGUARD-MODULE")
  conflicts=('linux')

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

  echo "Installing boot image..."
  install -Dm644 "arch/riscv/boot/Image" "$modulesdir/Image"
  install -Dm644 "arch/riscv/boot/Image" "$pkgdir/boot/arch/Image"

  echo "Installing modules..."
  make -j $(nproc) ARCH=riscv INSTALL_MOD_PATH="$pkgdir/usr" INSTALL_MOD_STRIP=1 modules_install

  echo "Installing dtbs..."
  make -j $(nproc) ARCH=riscv INSTALL_DTBS_PATH="$pkgdir/usr/share/dtbs/$kernver" dtbs_install
  make -j $(nproc) ARCH=riscv INSTALL_DTBS_PATH="$pkgdir/boot/dtbs/" dtbs_install

  # remove build links
  rm "$modulesdir"/build

}

_package-headers() {
  pkgdesc="Headers and scripts for building modules for the $_desc kernel"
  depends=(pahole)
  provides=("linux-headers=${pkgver}")
  conflicts=('linux-headers')

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

  echo "Installing build files..."
  install -Dt "$builddir" -m644 .config Makefile Module.symvers System.map version
  install -Dt "$builddir/kernel" -m644 kernel/Makefile
  install -Dt "$builddir/arch/riscv" -m644 arch/riscv/Makefile
  cp -t "$builddir" -a scripts

  # required when DEBUG_INFO_BTF_MODULES is enabled
  cp --parents -r -t "$builddir/" tools/bpf/resolve_btfids

  echo "Installing VDSO files..."
  cp -a --parents -r -t "$builddir" arch/riscv/kernel/vdso/*
  cp -a --parents -r -t "$builddir" lib/vdso/*
  chmod -R g+w "$builddir/arch/riscv/kernel/vdso"

  echo "Installing certificate files..."
  #install -Dt "$builddir/certs" -m640 certs/*.pem
  install -Dt "$builddir/certs" -m640 certs/*.x509

  echo "Installing headers..."
  cp -t "$builddir" -a include
  chmod -R g+w "$builddir/include/generated"
  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 = */riscv/ ]] && continue
    echo "Removing $(basename "$arch")"
    rm -r "$arch"
  done

  echo "Installing RAS from x86..."
  install -Dt "$builddir/arch/x86/ras"  -m644 arch/x86/ras/Kconfig

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

pkgname=("$pkgbase" "$pkgbase-headers")
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: