pyrox.dev
1# QEMU-related utilities shared between various Nix expressions.
2{ lib, pkgs }:
3
4let
5 zeroPad = n:
6 lib.optionalString (n < 16) "0" +
7 (if n > 255
8 then throw "Can't have more than 255 nets or nodes!"
9 else lib.toHexString n);
10in
11
12rec {
13 qemuNicMac = net: machine: "52:54:00:12:${zeroPad net}:${zeroPad machine}";
14
15 qemuNICFlags = nic: net: machine:
16 [ "-device virtio-net-pci,netdev=vlan${toString nic},mac=${qemuNicMac net machine}"
17 ''-netdev vde,id=vlan${toString nic},sock="$QEMU_VDE_SOCKET_${toString net}"''
18 ];
19
20 qemuSerialDevice = if pkgs.stdenv.hostPlatform.isx86 then "ttyS0"
21 else if (with pkgs.stdenv.hostPlatform; isAarch32 || isAarch64 || isPower) then "ttyAMA0"
22 else throw "Unknown QEMU serial device for system '${pkgs.stdenv.hostPlatform.system}'";
23
24 qemuBinary = qemuPkg: {
25 x86_64-linux = "${qemuPkg}/bin/qemu-kvm -cpu max";
26 armv7l-linux = "${qemuPkg}/bin/qemu-system-arm -enable-kvm -machine virt -cpu host";
27 aarch64-linux = "${qemuPkg}/bin/qemu-system-aarch64 -enable-kvm -machine virt,gic-version=host -cpu host";
28 powerpc64le-linux = "${qemuPkg}/bin/qemu-system-ppc64 -machine powernv";
29 powerpc64-linux = "${qemuPkg}/bin/qemu-system-ppc64 -machine powernv";
30 x86_64-darwin = "${qemuPkg}/bin/qemu-kvm -cpu max";
31 }.${pkgs.stdenv.hostPlatform.system} or "${qemuPkg}/bin/qemu-kvm";
32}