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{ lib, stdenv, fetchurl, cpio, xz, pkgs }:
let
version = "1.43_5";
# Updated according to https://github.com/patjak/bcwc_pcie/pull/81/files
# and https://github.com/patjak/bcwc_pcie/blob/5a7083bd98b38ef3bd223f7ee531d58f4fb0fe7c/firmware/Makefile#L3-L9
# and https://github.com/patjak/bcwc_pcie/blob/5a7083bd98b38ef3bd223f7ee531d58f4fb0fe7c/firmware/extract-firmware.sh
# From the Makefile:
dmgUrl = "https://updates.cdn-apple.com/2019/cert/041-88431-20191011-e7ee7d98-2878-4cd9-bc0a-d98b3a1e24b1/OSXUpd10.11.5.dmg";
dmgRange = "204909802-207733123"; # the whole download is 1.3GB, this cuts it down to 2MB
# Notes:
# 1. Be sure to update the sha256 below in the fetch_url
# 2. Be sure to update the homepage in the meta
# Also from the Makefile (OS_DRV, OS_DRV_DIR), but seems to not change:
firmwareIn = "./System/Library/Extensions/AppleCameraInterface.kext/Contents/MacOS/AppleCameraInterface";
firmwareOut = "firmware.bin";
# The following are from the extract-firmware.sh
firmwareOffset = "81920"; # Variable: firmw_offsets
firmwareSize = "603715"; # Variable: firmw_sizes
# separated this here as the script will fail without the 'exit 0'
unpack = pkgs.writeScriptBin "unpack" ''
xzcat -Q $src | cpio --format odc -i -d ${firmwareIn}
exit 0
'';
in
stdenv.mkDerivation {
pname = "facetimehd-firmware";
inherit version;
src = fetchurl {
url = dmgUrl;
sha256 = "0s8crlh8rvpanzk1w4z3hich0a3mw0m5xhpcg07bxy02calhpdk1";
curlOpts = "-r ${dmgRange}";
};
dontUnpack = true;
dontInstall = true;
buildInputs = [ cpio xz ];
buildPhase = ''
${unpack}/bin/unpack
dd bs=1 skip=${firmwareOffset} count=${firmwareSize} if=${firmwareIn} of=${firmwareOut}.gz &> /dev/null
mkdir -p $out/lib/firmware/facetimehd
gunzip -c ${firmwareOut}.gz > $out/lib/firmware/facetimehd/${firmwareOut}
'';
meta = with lib; {
description = "facetimehd firmware";
homepage = "https://support.apple.com/kb/DL1877";
license = licenses.unfree;
maintainers = with maintainers; [ womfoo grahamc ];
platforms = [ "i686-linux" "x86_64-linux" ];
};
}
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