mio-ops/roles/qemu.nix
Craige McWhirter 4cd687c28e
Added qemu
2020-12-31 12:19:52 +10:00

54 lines
2 KiB
Nix

# Based up original work by cleverca22
# https://github.com/cleverca22/nixos-configs/blob/master/qemu.nix
{ config, pkgs, lib, ... }:
with lib;
let
cfg = config.qemu-user;
arm = {
interpreter = "${pkgs.qemu-user-arm}/bin/qemu-arm";
magicOrExtension = ''\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28\x00'';
mask = ''\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\x00\xff\xfe\xff\xff\xff'';
};
aarch64 = {
interpreter = "${pkgs.qemu-user-arm64}/bin/qemu-aarch64";
magicOrExtension = ''\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xb7\x00'';
mask = ''\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\x00\xff\xfe\xff\xff\xff'';
};
riscv64 = {
interpreter = "${pkgs.qemu-riscv64}/bin/qemu-riscv64";
magicOrExtension = ''\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xf3\x00'';
mask = ''\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\x00\xff\xfe\xff\xff\xff'';
};
in {
options = {
qemu-user = {
arm = mkEnableOption "enable 32bit arm emulation";
aarch64 = mkEnableOption "enable 64bit arm emulation";
riscv64 = mkEnableOption "enable 64bit riscv emulation";
};
nix.supportedPlatforms = mkOption {
type = types.listOf types.str;
description = "extra platforms that nix will run binaries for";
default = [];
};
};
config = mkIf (cfg.arm || cfg.aarch64) {
nixpkgs = {
overlays = [ (import ../overlays/qemu) ];
};
boot.binfmt.registrations =
optionalAttrs cfg.arm { inherit arm; } //
optionalAttrs cfg.aarch64 { inherit aarch64; } //
optionalAttrs cfg.riscv64 { inherit riscv64; };
nix.supportedPlatforms = (optionals cfg.arm [ "armv6l-linux" "armv7l-linux" ])
++ (optional cfg.aarch64 "aarch64-linux");
nix.extraOptions = ''
extra-platforms = ${toString config.nix.supportedPlatforms} i686-linux
'';
nix.sandboxPaths = [ "/run/binfmt" ] ++ (optional cfg.arm "${pkgs.qemu-user-arm}") ++ (optional cfg.aarch64 "${pkgs.qemu-user-arm64}");
};
}