56 lines
1.5 KiB
Nix
56 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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