Daniel Barlow
7e2b0068e6
There is nothing in this commit except for the changes made by nix-shell -p nixfmt-rfc-style --run "nixfmt ." If this has mucked up your open branches then sorry about that. You can probably nixfmt them to match before merging
77 lines
2.6 KiB
Nix
77 lines
2.6 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) mkOption types concatStringsSep;
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in
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{
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options = {
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system.outputs = {
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vmroot = mkOption {
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type = types.package;
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description = ''
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vmroot
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******
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This target is for use with the qemu, qemu-aarch64, qemu-armv7l
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devices. It generates an executable :file:`run.sh` which
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invokes QEMU. It connects the Liminix
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serial console and the `QEMU monitor <https://www.qemu.org/docs/master/system/monitor.html>`_
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to stdin/stdout. Use ^P (not ^A) to switch between monitor and
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stdio.
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If you call :command:`run.sh` with ``--background
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/path/to/some/directory`` as the first parameter, it will
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fork into the background and open Unix sockets in that
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directory for console and monitor. Use :command:`nix-shell
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--run connect-vm` to connect to either of these sockets, and
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^O to disconnect.
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Liminix VMs are networked using QEMU socket networking. The
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default behaviour is to connect
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* multicast 230.0.0.1:1234 ("access") to eth0
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* multicast 230.0.0.1:1235 ("lan") to eth1
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Refer to :ref:`border-network-gateway` for details of how to
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start an emulated upstream on the "access" network that
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your Liminix device can talk to.
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'';
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};
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};
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};
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config = {
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system.outputs = rec {
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vmroot =
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let
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inherit (config.system.outputs) rootfs kernel manifest;
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cmdline = builtins.toJSON (concatStringsSep " " config.boot.commandLine);
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makeBootableImage = pkgs.runCommandCC "objcopy" { } (
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if pkgs.stdenv.hostPlatform.isAarch then
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"${pkgs.stdenv.cc.targetPrefix}objcopy -O binary -R .comment -S ${kernel} $out"
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else
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"cp ${kernel} $out"
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);
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phram_address = lib.toHexString (config.hardware.ram.startAddress + 256 * 1024 * 1024);
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in
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pkgs.runCommand "vmroot" { } ''
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mkdir $out
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cd $out
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ln -s ${rootfs} rootfs
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ln -s ${kernel} vmlinux
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ln -s ${manifest} manifest
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ln -s ${kernel.headers} build
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echo ${cmdline} > commandline
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cat > run.sh << EOF
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#!${pkgs.runtimeShell}
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${pkgs.pkgsBuildBuild.run-liminix-vm}/bin/run-liminix-vm --command-line ${cmdline} --arch ${pkgs.stdenv.hostPlatform.qemuArch} --phram-address 0x${phram_address} \$* ${makeBootableImage} ${config.system.outputs.rootfs}
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EOF
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chmod +x run.sh
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'';
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};
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};
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}
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