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nixos/boot: add option to disable initrd

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wip/yesman
rnhmjoj 4 years ago
parent 3b7f5c6762
commit dea79b56f7
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GPG Key ID: BFBAF4C975F76450
2 changed files with 147 additions and 131 deletions
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  1. 265
      nixos/modules/system/boot/kernel.nix
  2. 13
      nixos/modules/system/boot/stage-1.nix

265
nixos/modules/system/boot/kernel.nix
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@ -187,139 +187,144 @@ in
###### 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" "nomodeset" ];
boot.kernel.sysctl."kernel.printk" = mkDefault 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-generate-config
# 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"
# SD cards and internal eMMC drives.
"mmc_block"
# Support USB keyboards, in case the boot fails and we only have
# a USB keyboard, or for LUKS passphrase prompt.
"uhci_hcd"
"ehci_hcd"
"ehci_pci"
"ohci_hcd"
"ohci_pci"
"xhci_hcd"
"xhci_pci"
"usbhid"
"hid_generic" "hid_lenovo" "hid_apple" "hid_roccat"
"hid_logitech_hidpp" "hid_logitech_dj"
] ++ optionals (pkgs.stdenv.isi686 || pkgs.stdenv.isx86_64) [
# Misc. x86 keyboard stuff.
"pcips2" "atkbd" "i8042"
# x86 RTC 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 =
{ "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";
config = mkMerge
[ (mkIf config.boot.initrd.enable {
boot.initrd.availableKernelModules =
[ # Note: most of these (especially the SATA/PATA modules)
# shouldn't be included by default since nixos-generate-config
# 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"
# SD cards and internal eMMC drives.
"mmc_block"
# Support USB keyboards, in case the boot fails and we only have
# a USB keyboard, or for LUKS passphrase prompt.
"uhci_hcd"
"ehci_hcd"
"ehci_pci"
"ohci_hcd"
"ohci_pci"
"xhci_hcd"
"xhci_pci"
"usbhid"
"hid_generic" "hid_lenovo" "hid_apple" "hid_roccat"
"hid_logitech_hidpp" "hid_logitech_dj"
] ++ optionals (pkgs.stdenv.isi686 || pkgs.stdenv.isx86_64) [
# Misc. x86 keyboard stuff.
"pcips2" "atkbd" "i8042"
# x86 RTC needed by the stage 2 init script.
"rtc_cmos"
];
boot.initrd.kernelModules =
[ # For LVM.
"dm_mod"
];
})
(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" "nomodeset" ];
boot.kernel.sysctl."kernel.printk" = mkDefault config.boot.consoleLogLevel;
boot.kernelModules = [ "loop" "atkbd" ];
# 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 =
{ "modules-load.d/nixos.conf".source = kernelModulesConf;
};
};
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")
] ++ (optional (randstructSeed != "") (isYes "GCC_PLUGIN_RANDSTRUCT"));
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";
};
};
# 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;
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")
] ++ (optional (randstructSeed != "") (isYes "GCC_PLUGIN_RANDSTRUCT"));
# 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;
})
];
}

13
nixos/modules/system/boot/stage-1.nix
Unescape View File

@ -379,6 +379,17 @@ in
'';
};
boot.initrd.enable = mkOption {
type = types.bool;
default = !config.boot.isContainer;
defaultText = "!config.boot.isContainer";
description = ''
Whether to enable the NixOS initial RAM disk (initrd). This may be
needed to perform some initialisation tasks (like mounting
network/encrypted file systems) before continuing the boot process.
'';
};
boot.initrd.prepend = mkOption {
default = [ ];
type = types.listOf types.str;
@ -544,7 +555,7 @@ in
};
config = mkIf (!config.boot.isContainer) {
config = mkIf config.boot.initrd.enable {
assertions = [
{ assertion = any (fs: fs.mountPoint == "/") fileSystems;
message = "The ‘fileSystems’ option does not specify your root file system.";

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