liminix/pkgs/kernel/dtb.nix
Daniel Barlow 4f29bdd3ed detect arch in kernel and uimage
also move kernel builder to pkgs/

FIXME we need to straighten out the mess in calling
dtb.nix/uimage.nix
2023-09-20 18:26:33 +01:00

23 lines
675 B
Nix

{
stdenv
, dtc
, lib
}:
{ dts
, includes
, commandLine
}:let
cppDtSearchFlags = builtins.concatStringsSep " " (map (f: "-I${f}") includes);
dtcSearchFlags = builtins.concatStringsSep " " (map (f: "-i${f}") includes);
cmdline = lib.concatStringsSep " " commandLine;
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 ${dts}
echo '/{ chosen { bootargs = ${builtins.toJSON cmdline}; }; };' >> dtb.tmp
dtc ${dtcSearchFlags} -I dts -O dtb -o $out dtb.tmp
test -e $out
'';
}