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build dtb (forgot to commit this file?)

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Daniel Barlow 2022-10-07 00:19:29 +01:00
parent 1bd35a1edd
commit af79e1e9e9
1 changed files with 24 additions and 0 deletions
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24
kernel/dtb.nix Normal file
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@ -0,0 +1,24 @@
{
stdenv
, openwrt
, dtc
, kernel
}:
{ dts
}:let
includes = [
"${openwrt}/target/linux/ath79/dts"
"${kernel}/include"
];
cppDtSearchFlags = builtins.concatStringsSep " " (map (f: "-I${f}") includes);
dtcSearchFlags = builtins.concatStringsSep " " (map (f: "-i${f}") includes);
in stdenv.mkDerivation {
name = "dtb";
phases = [ "buildPhase" ];
nativeBuildInputs = [ dtc ];
buildPhase = ''
${stdenv.cc.targetPrefix}cpp -nostdinc -x assembler-with-cpp ${cppDtSearchFlags} -undef -D__DTS__ -o dtb.tmp ${openwrt}/target/linux/ath79/dts/${dts}
dtc ${dtcSearchFlags} -I dts -O dtb -o $out dtb.tmp
test -e $out
'';
}