move boot config into cfg/hardware.nix

cfg/hardware.nix

@@ -1,23 +1,59 @@
-# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# this file originates from ‘nixos-generate-config’
-# and may be overwritten by future invocations.  Please make changes
+# but has been heavily modified
-# to /etc/nixos/configuration.nix instead.
 { config, lib, pkgs, modulesPath, ... }:
 
 {
+  # TODO colin: this was autogenerated. what's it do?
   imports =
     [ (modulesPath + "/installer/scan/not-detected.nix")
     ];
 
-  boot.initrd.availableKernelModules = [ "xhci_pci" "usbhid" "usb_storage" ];
+  # XXX colin: these four statements were autogenerated and placed here: why?
-  boot.initrd.kernelModules = [ ];
+  # boot.initrd.availableKernelModules = [ "xhci_pci" "usbhid" "usb_storage" ];
-  boot.kernelModules = [ ];
+  # boot.initrd.kernelModules = [ ];
-  boot.extraModulePackages = [ ];
+  # boot.kernelModules = [ ];
+  # boot.extraModulePackages = [ ];
 
-  # XXX colin: moved to fs-configuration.nix
+  # NixOS defaults to grub: we don't want that.
-  # fileSystems."/" =
+  boot.loader.grub.enable = false;
-  #   { device = "/dev/disk/by-uuid/44444444-4444-4444-8888-888888888888";
+  # Enables the generation of /boot/extlinux/extlinux.conf
-  #     fsType = "ext4";
+  boot.loader.generic-extlinux-compatible.enable = true;
-  #   };
+  boot.loader.raspberryPiColin.enable = true;
+  boot.loader.raspberryPiColin.uboot.enable = true;
+  boot.loader.raspberryPiColin.version = 4;
+
+  boot.initrd.availableKernelModules = [
+    "bcm2711_thermal"
+    "bcm_phy_lib"
+    "brcmfmac"
+    "brcmutil"
+    "broadcom"
+    "clk_raspberrypi"
+    "drm"  # Direct Render Manager
+    "enclosure"  # SCSI ?
+    "fuse"
+    "mdio_bcm_unimac"
+    "pcie_brcmstb"
+    "raspberrypi_cpufreq"
+    "raspberrypi_hwmon"
+    "ses"  # SCSI Enclosure Services
+    "uas"  # USB attached storage
+    "uio"  # userspace IO
+    "uio_pdrv_genirq"
+    "xhci_pci"
+    "xhci_pci_renesas"
+  ];
+  boot.initrd.compressor = "gzip";  # defaults to zstd
+  # hack in the `boot.shell_on_fail` arg since it doesn't seem to work otherwise
+  boot.initrd.preFailCommands = "allowShell=1";
+  # default: 4 (warn). 7 is debug
+  # boot.consoleLogLevel = 7;
+  # boot.kernelParams = [
+  #   "boot.shell_on_fail"
+  #   # "boot.trace"
+  #   # "systemd.log_level=debug"
+  #   # "systemd.log_target=console"
+  # ];
 
   powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
 }

configuration.nix

@@ -42,48 +42,6 @@ in
   ];
 
 
-  # NixOS defaults to grub: we don't want that.
-  boot.loader.grub.enable = false;
-  # Enables the generation of /boot/extlinux/extlinux.conf
-  boot.loader.generic-extlinux-compatible.enable = true;
-  boot.loader.raspberryPiColin.enable = true;
-  boot.loader.raspberryPiColin.uboot.enable = true;
-  boot.loader.raspberryPiColin.version = 4;
-
-  boot.initrd.availableKernelModules = [
-    "bcm2711_thermal"
-    "bcm_phy_lib"
-    "brcmfmac"
-    "brcmutil"
-    "broadcom"
-    "clk_raspberrypi"
-    "drm"  # Direct Render Manager
-    "enclosure"  # SCSI ?
-    "fuse"
-    "mdio_bcm_unimac"
-    "pcie_brcmstb"
-    "raspberrypi_cpufreq"
-    "raspberrypi_hwmon"
-    "ses"  # SCSI Enclosure Services
-    "uas"  # USB attached storage
-    "uio"  # userspace IO
-    "uio_pdrv_genirq"
-    "xhci_pci"
-    "xhci_pci_renesas"
-  ];
-  boot.initrd.compressor = "gzip";  # defaults to zstd
-  # hack in the `boot.shell_on_fail` arg since it doesn't seem to work otherwise
-  boot.initrd.preFailCommands = "allowShell=1";
-  # default: 4 (warn). 7 is debug
-  # boot.consoleLogLevel = 7;
-  # boot.kernelParams = [
-  #   "boot.shell_on_fail"
-  #   # "boot.trace"
-  #   # "systemd.log_level=debug"
-  #   # "systemd.log_target=console"
-  # ];
-
-
   # This value determines the NixOS release from which the default
   # settings for stateful data, like file locations and database versions
   # on your system were taken. It‘s perfectly fine and recommended to leave