100 lines
3.2 KiB
Nix
100 lines
3.2 KiB
Nix
{ config, lib, ... }:
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let cfg = config.hardware.az-raspi4-usb;
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in {
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options = {
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hardware.az-raspi4-usb = {
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enable = lib.mkEnableOption "Enable options required for Raspberry Pi 4.";
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hostname = lib.mkOption {
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type = lib.types.str;
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description = "The hostname of the system.";
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};
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ip = lib.mkOption {
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type = lib.types.str;
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description = "The IP of the system.";
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};
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};
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};
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config = lib.mkIf cfg.enable {
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hardware.az-raspi4-base.enable = true;
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boot.kernelParams = [
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"ip=10.7.89.159::10.7.89.1:255.255.255.0:mobile:enabcm6e4ei0" # required for ssh at initrd
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];
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boot = {
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kernelModules = [ "libcomposite" ];
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loader.raspberryPi.firmwareConfig = "dtoverlay=dwc2";
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};
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networking = {
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hostName = cfg.hostname;
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hosts = {
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"127.0.0.1" = [ "${cfg.hostname}.2li.local" ];
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ip = [ "${cfg.hostname}.2li.local" ];
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};
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interfaces.usb0.ipv4.addresses = [{
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address = cfg.ip;
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prefixLength = 24;
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}];
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wireless = {
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enable = true;
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userControlled.enable = true;
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interfaces = [ "wlan0" ];
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networks = { "Gröibschi" = { psk = "schottland"; }; };
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};
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};
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networking.dhcpcd.denyInterfaces = [ "usb0" ];
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services.dnsmasq = {
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enable = true;
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settings = {
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domain = "2li.mobile";
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domain-needed = true;
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dhcp-range = [ "10.213.0.100,10.213.0.200,255.255.255.0,24h" ];
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dhcp-option = [ "option:router,${cfg.ip}" ];
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interface = "usb0";
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server = [ "84.200.69.80" "84.200.70.40" ];
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};
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};
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systemd.services."usb-otg" = {
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serviceConfig = {
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Type = "oneshot";
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RemainAfterExit = true;
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};
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wantedBy = [ "default.target" ];
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script = ''
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mkdir -p /sys/kernel/config/usb_gadget/pi4
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cd /sys/kernel/config/usb_gadget/pi4
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echo 0x1d6b > idVendor # Linux Foundation
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echo 0x0104 > idProduct # Multifunction Composite Gadget
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echo 0x0100 > bcdDevice # v1.0.0
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echo 0x0200 > bcdUSB # USB2
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echo 0xEF > bDeviceClass
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echo 0x02 > bDeviceSubClass
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echo 0x01 > bDeviceProtocol
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mkdir -p /sys/kernel/config/usb_gadget/pi4/strings/0x409
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echo "fedcba9876543211" > strings/0x409/serialnumber
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echo "Nebucatnetzer" > strings/0x409/manufacturer
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echo "PI4 USB Device" > strings/0x409/product
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mkdir -p /sys/kernel/config/usb_gadget/pi4/configs/c.1/strings/0x409
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echo "Config 1: ECM network" > configs/c.1/strings/0x409/configuration
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echo 250 > configs/c.1/MaxPower
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# Add functions here
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# see gadget configurations below
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# End functions
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mkdir -p /sys/kernel/config/usb_gadget/pi4/functions/ecm.usb0
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HOST="00:dc:c8:f7:75:14" # "HostPC"
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SELF="00:dd:dc:eb:6d:a1" # "BadUSB"
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echo $HOST > functions/ecm.usb0/host_addr
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echo $SELF > functions/ecm.usb0/dev_addr
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ln -s functions/ecm.usb0 configs/c.1/
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udevadm settle -t 5 || :
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ls /sys/class/udc > UDC
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'';
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};
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systemd.services.dhcpd4.after = [ "usb-otg.service" ];
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systemd.services."network-addresses-usb0".after = [ "usb-otg.service" ];
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};
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}
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