raspberry-pi-nix/overlay/raspberrypi-wireless-firmware.nix
2023-03-08 21:03:56 -05:00

48 lines
1.5 KiB
Nix

{ bluez-firmware-src, firmware-nonfree-src }:
{ lib, stdenvNoCC, fetchFromGitHub }:
stdenvNoCC.mkDerivation {
pname = "raspberrypi-wireless-firmware";
version = "2023-01-19";
srcs = [ bluez-firmware-src firmware-nonfree-src ];
sourceRoot = ".";
dontBuild = true;
# Firmware blobs do not need fixing and should not be modified
dontFixup = true;
installPhase = ''
runHook preInstall
mkdir -p "$out/lib/firmware/brcm"
# Wifi firmware
cp -rv "$NIX_BUILD_TOP/firmware-nonfree/debian/config/brcm80211/." "$out/lib/firmware/"
# Bluetooth firmware
cp -rv "$NIX_BUILD_TOP/bluez-firmware/broadcom/." "$out/lib/firmware/brcm"
# CM4 symlink must be added since it's missing from upstream
pushd $out/lib/firmware/brcm &>/dev/null
ln -s "./brcmfmac43455-sdio.txt" "$out/lib/firmware/brcm/brcmfmac43455-sdio.raspberrypi,4-compute-module.txt"
# There are two options for the brcmfmac43455 binary: minimal or
# standard. For more info see the readme at:
# https://github.com/RPi-Distro/firmware-nonfree/blob/bullseye/debian/config/brcm80211/cypress/README.txt
ln -sf ../cypress/cyfmac43455-sdio-minimal.bin brcmfmac43455-sdio.bin
popd &>/dev/null
runHook postInstall
'';
meta = with lib; {
description =
"Firmware for builtin Wifi/Bluetooth devices in the Raspberry Pi 3+ and Zero W";
homepage = "https://github.com/RPi-Distro/firmware-nonfree";
license = licenses.unfreeRedistributableFirmware;
platforms = platforms.linux;
maintainers = with maintainers; [ lopsided98 ];
};
}