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mirror of https://github.com/NixOS/mobile-nixos.git synced 2024-12-17 21:11:34 +03:00
mobile-nixos/modules/initrd-kernel.nix

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{ config, lib, options, pkgs, ... }:
let
inherit (lib)
mergeEqualOption
mkIf
mkOption
types
;
cfg = config.mobile.boot.stage-1.kernel;
device_config = config.mobile.device;
modulesClosure = pkgs.makeModulesClosure {
kernel = cfg.package;
allowMissing = true;
rootModules = cfg.modules ++ cfg.additionalModules;
firmware = cfg.firmwares;
};
in
{
# Note: These options are provided *instead* of `boot.initrd.*`, as we are
# not re-using the `initrd` options.
options.mobile.boot.stage-1.kernel = {
modular = mkOption {
type = types.bool;
default = false;
description = ''
Whether the kernel is built with modules or not.
This will enable modules closure generation and listing modules
to bundle and load.
'';
};
modules = mkOption {
type = types.listOf types.str;
default = [
];
description = ''
Module names to add to the closure.
They will be modprobed.
'';
};
additionalModules = mkOption {
type = types.listOf types.str;
default = [
];
description = ''
Module names to add to the closure.
They will not be modprobed.
'';
};
firmwares = mkOption {
type = types.listOf types.str;
default = [];
description = ''
2020-10-14 00:23:24 +03:00
Firmwares to add to the closure.
'';
};
# We cannot use `linuxPackagesFor` as older kernels cause eval-time assertions...
# This is bad form, but is already in nixpkgs :(.
package = mkOption {
type = types.package;
description = ''
Kernel to be used by the system-type to boot into the Mobile NixOS
stage-1.
This is not using a kernelPackages attrset, but a kernel derivation directly.
'';
};
};
config.mobile.boot.stage-1 = (mkIf cfg.modular {
firmware = [ modulesClosure ];
contents = [
{ object = "${modulesClosure}/lib/modules"; symlink = "/lib/modules"; }
];
kernel.modules = [
# Basic always-needed kernel modules.
"loop"
# Filesystems
"nls_cp437"
"nls_iso8859-1"
"fat"
"vfat"
"ext4"
"crc32c"
];
});
}