mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-21 05:04:00 +00:00
33 lines
972 B
Nix
33 lines
972 B
Nix
{ lib, stdenvNoCC, dtc, findutils }:
|
|
|
|
with lib; {
|
|
applyOverlays = (base: overlays': stdenvNoCC.mkDerivation {
|
|
name = "device-tree-overlays";
|
|
nativeBuildInputs = [ dtc findutils ];
|
|
buildCommand = let
|
|
overlays = toList overlays';
|
|
in ''
|
|
mkdir -p $out
|
|
cd ${base}
|
|
find . -type f -name '*.dtb' -print0 \
|
|
| xargs -0 cp -v --no-preserve=mode --target-directory $out --parents
|
|
|
|
for dtb in $(find $out -type f -name '*.dtb'); do
|
|
dtbCompat="$( fdtget -t s $dtb / compatible )"
|
|
|
|
${flip (concatMapStringsSep "\n") overlays (o: ''
|
|
overlayCompat="$( fdtget -t s ${o.dtboFile} / compatible )"
|
|
# overlayCompat in dtbCompat
|
|
if [[ "$dtbCompat" =~ "$overlayCompat" ]]; then
|
|
echo "Applying overlay ${o.name} to $( basename $dtb )"
|
|
mv $dtb{,.in}
|
|
fdtoverlay -o "$dtb" -i "$dtb.in" ${o.dtboFile};
|
|
rm $dtb.in
|
|
fi
|
|
'')}
|
|
|
|
done
|
|
'';
|
|
});
|
|
}
|