153 lines
4.2 KiB
Nix
153 lines
4.2 KiB
Nix
{ config, pkgs, ... }:
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with pkgs.lib;
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let kernel = config.boot.kernelPackages.kernel; in
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{
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###### interface
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options = {
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boot.kernelPackages = mkOption {
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default = pkgs.kernelPackages;
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example = pkgs.kernelPackages_2_6_25;
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description = ''
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This option allows you to override the Linux kernel used by
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NixOS. Since things like external kernel module packages are
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tied to the kernel you're using, it also overrides those.
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This option is a function that takes Nixpkgs as an argument
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(as a convenience), and returns an attribute set containing at
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the very least an attribute <varname>kernel</varname>.
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Additional attributes may be needed depending on your
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configuration. For instance, if you use the NVIDIA X driver,
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then it also needs to contain an attribute
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<varname>nvidia_x11</varname>.
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'';
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};
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boot.kernelParams = mkOption {
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default = [
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"selinux=0"
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"apm=on"
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"acpi=on"
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"console=tty1"
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"splash=verbose"
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"vga=0x317"
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];
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description = ''
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The kernel parameters. If you want to add additional
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parameters, it's best to set
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<option>boot.extraKernelParams</option>.
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'';
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};
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boot.extraKernelParams = mkOption {
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default = [ ];
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example = [ "debugtrace" ];
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description = "Additional user-defined kernel parameters.";
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};
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boot.extraModulePackages = mkOption {
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default = [];
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# !!! example = [pkgs.aufs pkgs.nvidia_x11];
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description = "A list of additional packages supplying kernel modules.";
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};
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boot.kernelModules = mkOption {
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default = [];
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description = ''
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The set of kernel modules to be loaded in the second stage of
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the boot process. Note that modules that are needed to
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mount the root file system should be added to
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<option>boot.initrd.kernelModules</option>.
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'';
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};
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boot.initrd.kernelModules = mkOption {
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default = [
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# Note: most of these (especially the SATA/PATA modules)
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# shouldn't be included by default since nixos-hardware-scan
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# detects them, but I'm keeping them for now for backwards
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# compatibility.
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# Some SATA/PATA stuff.
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"ahci"
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"sata_nv"
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"sata_via"
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"sata_sis"
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"sata_uli"
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"ata_piix"
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"pata_marvell"
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# Standard SCSI stuff.
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"sd_mod"
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"sr_mod"
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# Standard IDE stuff.
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"ide_cd"
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"ide_disk"
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"ide_generic"
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# Filesystems.
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"ext2" "ext3"
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# Support USB keyboards, in case the boot fails and we only have
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# a USB keyboard.
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"uhci_hcd"
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"ehci_hcd"
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"ohci_hcd"
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"usbhid"
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# LVM.
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"dm_mod"
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# All-mod-config case:
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"unix"
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"i8042" "pcips2" "serio" "atkbd" "xtkbd"
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];
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description = ''
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The set of kernel modules in the initial ramdisk used during the
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boot process. This set must include all modules necessary for
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mounting the root device. That is, it should include modules
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for the physical device (e.g., SCSI drivers) and for the file
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system (e.g., ext3). The set specified here is automatically
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closed under the module dependency relation, i.e., all
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dependencies of the modules list here are included
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automatically.
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'';
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};
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system.modulesTree = mkOption {
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internal = true;
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default = [];
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description = ''
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Tree of kernel modules. This includes the kernel, plus modules
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built outside of the kernel. Combine these into a single tree of
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symlinks because modprobe only supports one directory.
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'';
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merge = mergeListOption;
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# Convert the list of path to only one path.
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apply = pkgs.aggregateModules;
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};
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};
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###### implementation
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config = {
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system.build = { inherit kernel; };
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system.modulesTree = [ kernel ] ++ config.boot.extraModulePackages;
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boot.kernelModules = [ "loop" ];
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# The Linux kernel >= 2.6.27 provides firmware.
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hardware.firmware = [ "${kernel}/lib/firmware" ];
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};
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}
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