# This is the source.sh script. It is executed by BPM in a temporary directory when compiling a source package
# BPM Expects the source code to be extracted into the automatically created 'source' directory which can be accessed using $BPM_SOURCE
# BPM Expects the output files to be present in the automatically created 'output' directory which can be accessed using $BPM_OUTPUT

DOWNLOAD="https://gitlab.com/kernel-firmware/linux-firmware/-/archive/${BPM_PKG_VERSION}/linux-firmware-${BPM_PKG_VERSION}.tar.gz"
FILENAME="${DOWNLOAD##*/}"

# The prepare function is executed in the root of the temp directory
# This function is used for downloading files and putting them into the correct location
prepare() {
  wget "$DOWNLOAD"
  tar -xvf "$FILENAME" --strip-components=1 -C "$BPM_SOURCE"
}

build() {
  # Create temporary directory for firmware installation
  install -dm755 "$BPM_SOURCE"/temp

  # Install and compress firmware files
  ZSTD_CLEVEL=19 make -j1 install-zst FIRMWAREDIR=/usr/lib/firmware/ DESTDIR="$BPM_SOURCE"/temp
  make dedup FIRMWAREDIR=/usr/lib/firmware/ DESTDIR="$BPM_SOURCE"/temp
}

package_linux-firmware-whence() {
	# Install whence file
	install -Dm644 WHENCE "$BPM_OUTPUT"/usr/share/licenses/linux-firmware/WHENCE
}

# Function for packaging AMD CPU and GPU microcode
package_linux-firmware-amd() {
  # Copy firmware files to amd package
  install -dm755 "$BPM_OUTPUT"/usr/lib/firmware/
  mv temp/usr/lib/firmware/amd* "$BPM_OUTPUT"/usr/lib/firmware/
  mv temp/usr/lib/firmware/radeon "$BPM_OUTPUT"/usr/lib/firmware/

  # Install package licenses
  install -Dm644 LICENSE.amdgpu "$BPM_OUTPUT"/usr/share/licenses/linux-firmware/amd/LICENSE.amdgpu
  install -Dm644 LICENSE.amd-ucode "$BPM_OUTPUT"/usr/share/licenses/linux-firmware/amd/LICENSE.amd-ucode
  install -Dm644 LICENSE.radeon "$BPM_OUTPUT"/usr/share/licenses/linux-firmware/amd/LICENSE.radeon

  # Create dracut config for amd microcode
  install -dm755 "$BPM_OUTPUT"/usr/lib/dracut/dracut.conf.d
  echo "early_microcode=yes" >> "$BPM_OUTPUT"/usr/lib/dracut/dracut.conf.d/amd_ucode.conf
}

# Function for packaging Intel CPU and GPU microcode
package_linux-firmware-intel() {
  # Copy firmware files to intel package
  install -dm755 "$BPM_OUTPUT"/usr/lib/firmware/
  mv temp/usr/lib/firmware/i915 "$BPM_OUTPUT"/usr/lib/firmware/

  # Install package license
  install -Dm644 LICENSE.i915 "$BPM_OUTPUT"/usr/share/licenses/linux-firmware/intel/LICENSE.i915
}

# Function for packaging Nvidia GPU microcode
package_linux-firmware-nvidia() {
  # Copy firmware files to nvidia package
  install -dm755 "$BPM_OUTPUT"/usr/lib/firmware/
  mv temp/usr/lib/firmware/nvidia "$BPM_OUTPUT"/usr/lib/firmware/

  # Install package license
  install -Dm644 LICENCE.nvidia "$BPM_OUTPUT"/usr/share/licenses/linux-firmware/nvidia/LICENSE.nvidia
}