73 lines
2.8 KiB
Nix
73 lines
2.8 KiB
Nix
paramsPerOverlayMap: {
|
|
lib,
|
|
stdenvNoCC,
|
|
dtc,
|
|
libraspberrypi,
|
|
pkgs,
|
|
}:
|
|
with lib; (base: overlays':
|
|
stdenvNoCC.mkDerivation {
|
|
name = "device-tree-overlays";
|
|
nativeBuildInputs = [dtc libraspberrypi];
|
|
buildCommand = let
|
|
overlays = toList overlays';
|
|
baseDTBs =
|
|
map (x: (builtins.unsafeDiscardStringContext (lib.removeSuffix ".dtb" (builtins.baseNameOf x))))
|
|
(lib.filesystem.listFilesRecursive "${base}");
|
|
in ''
|
|
mkdir -p $out
|
|
cd "${base}"
|
|
find . -type f -name '*.dtb' -print0 \
|
|
| xargs -0 cp -v --no-preserve=mode --target-directory "$out" --parents
|
|
|
|
echo baseDTBs: ${toString baseDTBs}
|
|
|
|
${flip (concatMapStringsSep "\n") baseDTBs (o: ''
|
|
dtb=$(find "$out" -type f -name '${o}.dtb')
|
|
echo -n "Applying params to ${o}.dtb... "
|
|
echo -n ${concatStringsSep " " (mapAttrsToList (name: value: "${name}=${value}") (paramsPerOverlayMap.${o} or {}))} " "
|
|
mv "$dtb"{,.in}
|
|
dtmerge "$dtb.in" "$dtb" - ${concatStringsSep " " (mapAttrsToList (name: value: "${name}=${value}") (paramsPerOverlayMap.${o} or {}))}
|
|
rm "$dtb.in"
|
|
echo "ok"
|
|
'')}
|
|
|
|
for dtb in $(find "$out" -type f -name '*.dtb'); do
|
|
dtbCompat=$(fdtget -t s "$dtb" / compatible 2>/dev/null || true)
|
|
# skip files without `compatible` string
|
|
test -z "$dtbCompat" && continue
|
|
|
|
${flip (concatMapStringsSep "\n") overlays (o: ''
|
|
overlayCompat="$(fdtget -t s "${o.dtboFile}" / compatible)"
|
|
|
|
# skip incompatible and non-matching overlays
|
|
if [[ ! "$dtbCompat" =~ "$overlayCompat" ]]; then
|
|
echo "Skipping overlay ${o.name}: incompatible with $(basename "$dtb")"
|
|
elif ${
|
|
if ((o.filter or null) == null)
|
|
then "false"
|
|
else ''
|
|
[[ "''${dtb//${o.filter}/}" == "$dtb" ]]
|
|
''
|
|
}
|
|
then
|
|
echo "Skipping overlay ${o.name}: filter does not match $(basename "$dtb")"
|
|
else
|
|
echo -n "Applying overlay ${o.name} to $(basename "$dtb")... "
|
|
mv "$dtb"{,.in}
|
|
|
|
# dtmerge requires a .dtbo ext for dtbo files, otherwise it adds it to the given file implicitly
|
|
dtboWithExt="$TMPDIR/$(basename "${o.dtboFile}").dtbo"
|
|
cp -r ${o.dtboFile} "$dtboWithExt"
|
|
|
|
echo -n ${concatStringsSep " " (mapAttrsToList (name: value: "${name}=${value}") (paramsPerOverlayMap.${o.name} or {}))} " "
|
|
dtmerge "$dtb.in" "$dtb" "$dtboWithExt" ${concatStringsSep " " (mapAttrsToList (name: value: "${name}=${value}") (paramsPerOverlayMap.${o.name} or {}))}
|
|
|
|
echo "ok"
|
|
rm "$dtb.in" "$dtboWithExt"
|
|
fi
|
|
'')}
|
|
done
|
|
'';
|
|
})
|