diff options
Diffstat (limited to 'nixos/modules/installer/netboot/netboot.nix')
| -rw-r--r-- | nixos/modules/installer/netboot/netboot.nix | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/nixos/modules/installer/netboot/netboot.nix b/nixos/modules/installer/netboot/netboot.nix index a459e7304cd4..3127bdc436f9 100644 --- a/nixos/modules/installer/netboot/netboot.nix +++ b/nixos/modules/installer/netboot/netboot.nix @@ -101,6 +101,37 @@ with lib; boot ''; + # A script invoking kexec on ./bzImage and ./initrd.gz. + # Usually used through system.build.kexecTree, but exposed here for composability. + system.build.kexecScript = pkgs.writeScript "kexec-boot" '' + #!/usr/bin/env bash + if ! kexec -v >/dev/null 2>&1; then + echo "kexec not found: please install kexec-tools" 2>&1 + exit 1 + fi + SCRIPT_DIR=$( cd -- "$( dirname -- "''${BASH_SOURCE[0]}" )" &> /dev/null && pwd ) + kexec --load ''${SCRIPT_DIR}/bzImage \ + --initrd=''${SCRIPT_DIR}/initrd.gz \ + --command-line "init=${config.system.build.toplevel}/init ${toString config.boot.kernelParams}" + kexec -e + ''; + + # A tree containing initrd.gz, bzImage and a kexec-boot script. + system.build.kexecTree = pkgs.linkFarm "kexec-tree" [ + { + name = "initrd.gz"; + path = "${config.system.build.netbootRamdisk}/initrd"; + } + { + name = "bzImage"; + path = "${config.system.build.kernel}/${config.system.boot.loader.kernelFile}"; + } + { + name = "kexec-boot"; + path = config.system.build.kexecScript; + } + ]; + boot.loader.timeout = 10; boot.postBootCommands = |