home-lab/machines/little-rascal/hardware-configuration.nix

# Hardware Configuration for Little Rascal
# Lenovo Yoga Slim 7 14ARE05 - AMD Ryzen 7 4700U

{ config, lib, pkgs, modulesPath, ... }:

{
  imports = [
    (modulesPath + "/installer/scan/not-detected.nix")
  ];

  # Boot configuration for AMD Ryzen 7 4700U
  boot = {
    initrd = {
      availableKernelModules = [
        "nvme"
        "xhci_pci"
        "usb_storage"
        "sd_mod"
        "sdhci_pci"
      ];
      kernelModules = [ ];
    };
    
    kernelModules = [ "kvm-amd" ]; # AMD Ryzen system
    extraModulePackages = [ ];
  };

  # Filesystem configuration - TEMPLATE
  # Update these paths and UUIDs after running nixos-generate-config
  fileSystems = {
    "/" = {
      device = "/dev/disk/by-uuid/REPLACE-WITH-ROOT-UUID";
      fsType = "ext4";
    };

    "/boot" = {
      device = "/dev/disk/by-uuid/REPLACE-WITH-BOOT-UUID";
      fsType = "vfat";
      options = [ "fmask=0022" "dmask=0022" ];
    };
  };

  # Swap configuration - TEMPLATE
  # Uncomment and update if using swap partition
  # swapDevices = [
  #   { device = "/dev/disk/by-uuid/REPLACE-WITH-SWAP-UUID"; }
  # ];

  # Hardware-specific configuration for Lenovo Yoga Slim 7 14ARE05
  hardware = {
    # CPU configuration - AMD Ryzen 7 4700U
    cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
    
    # Enable firmware updates
    enableRedistributableFirmware = true;
    
    # Graphics configuration - AMD Radeon Vega (integrated)
    graphics = {
      enable = true;
      enable32Bit = true;
      
      # AMD integrated graphics drivers
      extraPackages = with pkgs; [
        amdvlk          # AMD Vulkan driver
        rocmPackages.clr.icd  # OpenCL support
      ];
      
      # 32-bit support for compatibility
      extraPackages32 = with pkgs.driversi686Linux; [
        amdvlk
      ];
    };
    
    # Bluetooth support for Intel AX200
    bluetooth = {
      enable = true;
      powerOnBoot = true;
    };
  };

  # Power management for AMD Ryzen 7 4700U
  powerManagement = {
    enable = true;
    powertop.enable = true; # Power optimization
    cpuFreqGovernor = "powersave"; # Better battery life
  };

  # Network hardware - Intel Wi-Fi 6 AX200
  networking = {
    # Enable NetworkManager for WiFi management
    networkmanager.enable = true;
    
    # Disable wpa_supplicant (using NetworkManager)
    wireless.enable = false;
  };

  # Firmware for Intel WiFi and Bluetooth
  hardware.firmware = with pkgs; [
    linux-firmware
  ];

  # AMD-specific optimizations
  boot.kernelParams = [
    # Enable AMD graphics performance
    "amdgpu.ppfeaturemask=0xffffffff"
  ];

  # TLP for better power management (alternative to power-profiles-daemon)
  services.tlp = {
    enable = false; # Using power-profiles-daemon instead
    settings = {
      # Would be configured here if enabled
      CPU_SCALING_GOVERNOR_ON_AC = "performance";
      CPU_SCALING_GOVERNOR_ON_BAT = "powersave";
    };
  };

  # Notes for this specific hardware:
  # - Lenovo Yoga Slim 7 14ARE05
  # - AMD Ryzen 7 4700U with Radeon Vega Graphics
  # - 16GB LPDDR4 RAM (soldered, not upgradeable)
  # - Intel Wi-Fi 6 AX200 + Bluetooth
  # - 128GB SSD storage
  # - Currently running btrfs filesystem
}