mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-25 07:00:43 +00:00
da36847d92
This makes it easy to specify kernel patches:
boot.kernelPatches = [ pkgs.kernelPatches.ubuntu_fan_4_4 ];
To make the `boot.kernelPatches` option possible, this also makes it
easy to extend and/or modify the kernel packages within a linuxPackages
set. For example:
pkgs.linuxPackages.extend (self: super: {
kernel = super.kernel.override {
kernelPatches = super.kernel.kernelPatches ++ [
pkgs.kernelPatches.ubuntu_fan_4_4
];
};
});
Closes #15095
311 lines
9.6 KiB
Nix
311 lines
9.6 KiB
Nix
{ config, lib, pkgs, ... }:
|
||
|
||
with lib;
|
||
|
||
let
|
||
|
||
inherit (config.boot) kernelPatches;
|
||
|
||
inherit (config.boot.kernelPackages) kernel;
|
||
|
||
kernelModulesConf = pkgs.writeText "nixos.conf"
|
||
''
|
||
${concatStringsSep "\n" config.boot.kernelModules}
|
||
'';
|
||
|
||
in
|
||
|
||
{
|
||
|
||
###### interface
|
||
|
||
options = {
|
||
|
||
boot.kernelPackages = mkOption {
|
||
default = pkgs.linuxPackages;
|
||
apply = kernelPackages: kernelPackages.extend (self: super: {
|
||
kernel = super.kernel.override {
|
||
kernelPatches = super.kernel.kernelPatches ++ kernelPatches;
|
||
};
|
||
});
|
||
# We don't want to evaluate all of linuxPackages for the manual
|
||
# - some of it might not even evaluate correctly.
|
||
defaultText = "pkgs.linuxPackages";
|
||
example = literalExample "pkgs.linuxPackages_2_6_25";
|
||
description = ''
|
||
This option allows you to override the Linux kernel used by
|
||
NixOS. Since things like external kernel module packages are
|
||
tied to the kernel you're using, it also overrides those.
|
||
This option is a function that takes Nixpkgs as an argument
|
||
(as a convenience), and returns an attribute set containing at
|
||
the very least an attribute <varname>kernel</varname>.
|
||
Additional attributes may be needed depending on your
|
||
configuration. For instance, if you use the NVIDIA X driver,
|
||
then it also needs to contain an attribute
|
||
<varname>nvidia_x11</varname>.
|
||
'';
|
||
};
|
||
|
||
boot.kernelPatches = mkOption {
|
||
type = types.listOf types.attrs;
|
||
default = [];
|
||
example = literalExample "[ pkgs.kernelPatches.ubuntu_fan_4_4 ]";
|
||
description = "A list of additional patches to apply to the kernel.";
|
||
};
|
||
|
||
boot.kernelParams = mkOption {
|
||
type = types.listOf types.str;
|
||
default = [ ];
|
||
description = "Parameters added to the kernel command line.";
|
||
};
|
||
|
||
boot.consoleLogLevel = mkOption {
|
||
type = types.int;
|
||
default = 4;
|
||
description = ''
|
||
The kernel console log level. Log messages with a priority
|
||
numerically less than this will not appear on the console.
|
||
'';
|
||
};
|
||
|
||
boot.vesa = mkOption {
|
||
type = types.bool;
|
||
default = false;
|
||
description = ''
|
||
Whether to activate VESA video mode on boot.
|
||
'';
|
||
};
|
||
|
||
boot.extraModulePackages = mkOption {
|
||
type = types.listOf types.package;
|
||
default = [];
|
||
example = literalExample "[ pkgs.linuxPackages.nvidia_x11 ]";
|
||
description = "A list of additional packages supplying kernel modules.";
|
||
};
|
||
|
||
boot.kernelModules = mkOption {
|
||
type = types.listOf types.str;
|
||
default = [];
|
||
description = ''
|
||
The set of kernel modules to be loaded in the second stage of
|
||
the boot process. Note that modules that are needed to
|
||
mount the root file system should be added to
|
||
<option>boot.initrd.availableKernelModules</option> or
|
||
<option>boot.initrd.kernelModules</option>.
|
||
'';
|
||
};
|
||
|
||
boot.initrd.availableKernelModules = mkOption {
|
||
type = types.listOf types.str;
|
||
default = [];
|
||
example = [ "sata_nv" "ext3" ];
|
||
description = ''
|
||
The set of kernel modules in the initial ramdisk used during the
|
||
boot process. This set must include all modules necessary for
|
||
mounting the root device. That is, it should include modules
|
||
for the physical device (e.g., SCSI drivers) and for the file
|
||
system (e.g., ext3). The set specified here is automatically
|
||
closed under the module dependency relation, i.e., all
|
||
dependencies of the modules list here are included
|
||
automatically. The modules listed here are available in the
|
||
initrd, but are only loaded on demand (e.g., the ext3 module is
|
||
loaded automatically when an ext3 filesystem is mounted, and
|
||
modules for PCI devices are loaded when they match the PCI ID
|
||
of a device in your system). To force a module to be loaded,
|
||
include it in <option>boot.initrd.kernelModules</option>.
|
||
'';
|
||
};
|
||
|
||
boot.initrd.kernelModules = mkOption {
|
||
type = types.listOf types.str;
|
||
default = [];
|
||
description = "List of modules that are always loaded by the initrd.";
|
||
};
|
||
|
||
system.modulesTree = mkOption {
|
||
type = types.listOf types.path;
|
||
internal = true;
|
||
default = [];
|
||
description = ''
|
||
Tree of kernel modules. This includes the kernel, plus modules
|
||
built outside of the kernel. Combine these into a single tree of
|
||
symlinks because modprobe only supports one directory.
|
||
'';
|
||
# Convert the list of path to only one path.
|
||
apply = pkgs.aggregateModules;
|
||
};
|
||
|
||
system.requiredKernelConfig = mkOption {
|
||
default = [];
|
||
example = literalExample ''
|
||
with config.lib.kernelConfig; [
|
||
(isYes "MODULES")
|
||
(isEnabled "FB_CON_DECOR")
|
||
(isEnabled "BLK_DEV_INITRD")
|
||
]
|
||
'';
|
||
internal = true;
|
||
type = types.listOf types.attrs;
|
||
description = ''
|
||
This option allows modules to specify the kernel config options that
|
||
must be set (or unset) for the module to work. Please use the
|
||
lib.kernelConfig functions to build list elements.
|
||
'';
|
||
};
|
||
|
||
};
|
||
|
||
|
||
###### implementation
|
||
|
||
config = mkIf (!config.boot.isContainer) {
|
||
|
||
system.build = { inherit kernel; };
|
||
|
||
system.modulesTree = [ kernel ] ++ config.boot.extraModulePackages;
|
||
|
||
# Implement consoleLogLevel both in early boot and using sysctl
|
||
# (so you don't need to reboot to have changes take effect).
|
||
boot.kernelParams =
|
||
[ "loglevel=${toString config.boot.consoleLogLevel}" ] ++
|
||
optionals config.boot.vesa [ "vga=0x317" ];
|
||
|
||
boot.kernel.sysctl."kernel.printk" = config.boot.consoleLogLevel;
|
||
|
||
boot.kernelModules = [ "loop" "atkbd" ];
|
||
|
||
boot.initrd.availableKernelModules =
|
||
[ # Note: most of these (especially the SATA/PATA modules)
|
||
# shouldn't be included by default since nixos-hardware-scan
|
||
# detects them, but I'm keeping them for now for backwards
|
||
# compatibility.
|
||
|
||
# Some SATA/PATA stuff.
|
||
"ahci"
|
||
"sata_nv"
|
||
"sata_via"
|
||
"sata_sis"
|
||
"sata_uli"
|
||
"ata_piix"
|
||
"pata_marvell"
|
||
|
||
# Standard SCSI stuff.
|
||
"sd_mod"
|
||
"sr_mod"
|
||
|
||
# Standard IDE stuff.
|
||
"ide_cd"
|
||
"ide_disk"
|
||
"ide_generic"
|
||
|
||
# SD cards and internal eMMC drives.
|
||
"mmc_block"
|
||
|
||
# Support USB keyboards, in case the boot fails and we only have
|
||
# a USB keyboard.
|
||
"uhci_hcd"
|
||
"ehci_hcd"
|
||
"ehci_pci"
|
||
"ohci_hcd"
|
||
"ohci_pci"
|
||
"xhci_hcd"
|
||
"xhci_pci"
|
||
"usbhid"
|
||
"hid_generic" "hid_lenovo"
|
||
"hid_apple" "hid_logitech_dj" "hid_lenovo_tpkbd" "hid_roccat"
|
||
|
||
# Misc. stuff.
|
||
"pcips2" "atkbd"
|
||
|
||
# Temporary fix for https://github.com/NixOS/nixpkgs/issues/18451
|
||
# Remove as soon as upstream gets fixed - marking it:
|
||
# TODO
|
||
# FIXME
|
||
"i8042"
|
||
|
||
# To wait for SCSI devices to appear.
|
||
"scsi_wait_scan"
|
||
|
||
# Needed by the stage 2 init script.
|
||
"rtc_cmos"
|
||
];
|
||
|
||
boot.initrd.kernelModules =
|
||
[ # For LVM.
|
||
"dm_mod"
|
||
];
|
||
|
||
# The Linux kernel >= 2.6.27 provides firmware.
|
||
hardware.firmware = [ kernel ];
|
||
|
||
# Create /etc/modules-load.d/nixos.conf, which is read by
|
||
# systemd-modules-load.service to load required kernel modules.
|
||
environment.etc = singleton
|
||
{ target = "modules-load.d/nixos.conf";
|
||
source = kernelModulesConf;
|
||
};
|
||
|
||
systemd.services."systemd-modules-load" =
|
||
{ wantedBy = [ "multi-user.target" ];
|
||
restartTriggers = [ kernelModulesConf ];
|
||
serviceConfig =
|
||
{ # Ignore failed module loads. Typically some of the
|
||
# modules in ‘boot.kernelModules’ are "nice to have but
|
||
# not required" (e.g. acpi-cpufreq), so we don't want to
|
||
# barf on those.
|
||
SuccessExitStatus = "0 1";
|
||
};
|
||
};
|
||
|
||
lib.kernelConfig = {
|
||
isYes = option: {
|
||
assertion = config: config.isYes option;
|
||
message = "CONFIG_${option} is not yes!";
|
||
configLine = "CONFIG_${option}=y";
|
||
};
|
||
|
||
isNo = option: {
|
||
assertion = config: config.isNo option;
|
||
message = "CONFIG_${option} is not no!";
|
||
configLine = "CONFIG_${option}=n";
|
||
};
|
||
|
||
isModule = option: {
|
||
assertion = config: config.isModule option;
|
||
message = "CONFIG_${option} is not built as a module!";
|
||
configLine = "CONFIG_${option}=m";
|
||
};
|
||
|
||
### Usually you will just want to use these two
|
||
# True if yes or module
|
||
isEnabled = option: {
|
||
assertion = config: config.isEnabled option;
|
||
message = "CONFIG_${option} is not enabled!";
|
||
configLine = "CONFIG_${option}=y";
|
||
};
|
||
|
||
# True if no or omitted
|
||
isDisabled = option: {
|
||
assertion = config: config.isDisabled option;
|
||
message = "CONFIG_${option} is not disabled!";
|
||
configLine = "CONFIG_${option}=n";
|
||
};
|
||
};
|
||
|
||
# The config options that all modules can depend upon
|
||
system.requiredKernelConfig = with config.lib.kernelConfig; [
|
||
# !!! Should this really be needed?
|
||
(isYes "MODULES")
|
||
(isYes "BINFMT_ELF")
|
||
];
|
||
|
||
# nixpkgs kernels are assumed to have all required features
|
||
assertions = if config.boot.kernelPackages.kernel ? features then [] else
|
||
let cfg = config.boot.kernelPackages.kernel.config; in map (attrs:
|
||
{ assertion = attrs.assertion cfg; inherit (attrs) message; }
|
||
) config.system.requiredKernelConfig;
|
||
|
||
};
|
||
|
||
}
|