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.
63 lines
1.8 KiB
Nix
63 lines
1.8 KiB
Nix
{
|
|
config
|
|
, pkgs
|
|
, lib
|
|
, ...
|
|
}:
|
|
let
|
|
inherit (lib) mkOption mkForce types concatStringsSep;
|
|
in {
|
|
imports = [ ./ramdisk.nix ];
|
|
options.system.outputs = {
|
|
kexecboot = mkOption {
|
|
type = types.package;
|
|
description = ''
|
|
Directory containing files needed for kexec booting.
|
|
Can be copied onto the target device using ssh or similar
|
|
'';
|
|
};
|
|
boot-sh = mkOption {
|
|
type = types.package;
|
|
description = ''
|
|
Shell script to run on the target device that invokes
|
|
kexec with appropriate options
|
|
'';
|
|
};
|
|
};
|
|
config = {
|
|
boot.ramdisk.enable = true;
|
|
system.outputs = {
|
|
kexecboot =
|
|
let o = config.system.outputs; in
|
|
pkgs.runCommand "kexecboot" {} ''
|
|
mkdir $out
|
|
cd $out
|
|
ln -s ${o.rootfs} rootfs
|
|
ln -s ${o.kernel} kernel
|
|
ln -s ${o.manifest} manifest
|
|
ln -s ${o.boot-sh} boot.sh
|
|
ln -s ${pkgs.kexec-tools-static}/bin/kexec ./kexec
|
|
ln -s ${o.dtb} dtb
|
|
'';
|
|
|
|
boot-sh =
|
|
let
|
|
inherit (pkgs.lib.trivial) toHexString;
|
|
inherit (config.system.outputs) rootfs kernel;
|
|
cmdline = concatStringsSep " " config.boot.commandLine;
|
|
in
|
|
pkgs.buildPackages.runCommand "boot.sh.sh" {
|
|
} ''
|
|
rootfsStart=${toString (100 * 1024 * 1024)}
|
|
rootfsBytes=$(stat -L -c %s ${rootfs})
|
|
append_cmd="mtdparts=phram0:''${rootfsBytes}(rootfs) phram.phram=phram0,''${rootfsStart},''${rootfsBytes} memmap=''${rootfsBytes}\$''${rootfsStart}";
|
|
cat > $out <<EOF
|
|
#!/bin/sh
|
|
test -d \$1
|
|
cd \$1
|
|
./kexec -f -d --map-file rootfs@$rootfsStart --dtb dtb --command-line '${cmdline} $append_cmd' kernel
|
|
EOF
|
|
'';
|
|
};
|
|
};
|
|
}
|