2e50368bd2
New rules: everything under "config" that isn't actually configuration (e.g. build products) will in future live in config.system. This is the first step.
55 lines
1.5 KiB
Nix
55 lines
1.5 KiB
Nix
{
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config
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, pkgs
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, lib
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, ...
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}:
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let
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inherit (lib) mkEnableOption mkOption mkIf types;
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inherit (pkgs) runCommand callPackage writeText;
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in
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{
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options = {
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boot.initramfs = {
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enable = mkEnableOption "enable initramfs";
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default = false;
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};
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system.outputs.initramfs = mkOption {
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type = types.package;
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internal = true;
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description = ''
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Initramfs image capable of mounting the jffs2 root
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filesystem
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'';
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};
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};
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config = mkIf config.boot.initramfs.enable {
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kernel.config = {
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BLK_DEV_INITRD = "y";
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INITRAMFS_SOURCE = builtins.toJSON "${config.system.outputs.initramfs}";
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# INITRAMFS_COMPRESSION_LZO = "y";
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};
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system.outputs = {
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initramfs =
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let inherit (pkgs.pkgsBuildBuild) gen_init_cpio;
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in runCommand "initramfs.cpio" {} ''
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cat << SPECIALS | ${gen_init_cpio}/bin/gen_init_cpio /dev/stdin > $out
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dir /proc 0755 0 0
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dir /dev 0755 0 0
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nod /dev/console 0600 0 0 c 5 1
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nod /dev/mtdblock0 0600 0 0 b 31 0
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nod /dev/mtdblock1 0600 0 0 b 31 1
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nod /dev/mtdblock2 0600 0 0 b 31 2
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nod /dev/mtdblock3 0600 0 0 b 31 3
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nod /dev/mtdblock4 0600 0 0 b 31 4
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nod /dev/mtdblock5 0600 0 0 b 31 5
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dir /target 0755 0 0
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dir /target/persist 0755 0 0
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dir /target/nix 0755 0 0
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file /init ${pkgs.preinit}/bin/preinit 0755 0 0
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SPECIALS
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'';
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};
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};
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}
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