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dtb.nix (675B)

      1 {
      2   stdenv
      3 , dtc
      4 , lib
      5 }:
      6 { dts
      7 , includes
      8 , commandLine
      9 }:let
     10   cppDtSearchFlags = builtins.concatStringsSep " " (map (f: "-I${f}") includes);
     11   dtcSearchFlags = builtins.concatStringsSep " " (map (f: "-i${f}") includes);
     12   cmdline = lib.concatStringsSep " " commandLine;
     13 in stdenv.mkDerivation {
     14   name = "dtb";
     15   phases = [ "buildPhase" ];
     16   nativeBuildInputs = [ dtc ];
     17   buildPhase = ''
     18     ${stdenv.cc.targetPrefix}cpp -nostdinc -x assembler-with-cpp ${cppDtSearchFlags} -undef -D__DTS__  -o dtb.tmp ${dts}
     19     echo '/{ chosen { bootargs = ${builtins.toJSON cmdline}; }; };'  >> dtb.tmp
     20     dtc ${dtcSearchFlags} -I dts  -O dtb -o $out dtb.tmp
     21     test -e $out
     22   '';
     23 }