38 lines
1.1 KiB
Nix
38 lines
1.1 KiB
Nix
{
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stdenv,
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dtc,
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lib,
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runCommand,
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writeText,
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}:
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{
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dts,
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includes,
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commandLine,
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}:
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let
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cppDtSearchFlags = builtins.concatStringsSep " " (map (f: "-I${f}") includes);
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dtcSearchFlags = builtins.concatStringsSep " " (map (f: "-i${f}") includes);
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cmdline = lib.concatStringsSep " " commandLine;
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chosen = writeText "chosen.dtsi" "/{ chosen { bootargs = ${builtins.toJSON cmdline}; }; };";
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combined = writeText "combined-dts-fragments" (
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lib.concatStrings (builtins.map (f: "#include \"${f}\"\n") (dts ++ [ chosen ]))
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);
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in
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stdenv.mkDerivation {
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name = "dtb";
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phases = [ "buildPhase" ];
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nativeBuildInputs = [ dtc ];
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buildPhase = ''
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echo ==================================================
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echo ${dtcSearchFlags}
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echo ==
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echo ${cppDtSearchFlags}
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echo ==================================================
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${stdenv.cc.targetPrefix}cpp -nostdinc -x assembler-with-cpp ${cppDtSearchFlags} -undef -D__DTS__ -o dtb.tmp ${combined}
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dtc ${dtcSearchFlags} -I dts -O dtb -o $out dtb.tmp
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# dtc -I dtb -O dts $out
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test -e $out
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'';
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}
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