rename mips-vm as run-liminix-vm

pkgs/run-liminix-vm/default.nix

@@ -0,0 +1,19 @@
+{
+  qemu
+, socat
+, writeShellScriptBin
+, symlinkJoin
+, lib
+}: let
+  run-liminix-vm = writeShellScriptBin "run-liminix-vm" ''
+     export PATH="${lib.makeBinPath [qemu]}:$PATH"
+     ${builtins.readFile ./run-liminix-vm.sh}
+  '';
+  connect = writeShellScriptBin "connect-vm" ''
+    export PATH="${lib.makeBinPath [socat]}:$PATH"
+    socat -,raw,echo=0,icanon=0,isig=0,icrnl=0,escape=0x0f unix-connect:$1
+  '';
+in symlinkJoin {
+  name = "run-liminix-vm";
+  paths = [ run-liminix-vm connect ];
+}

pkgs/run-liminix-vm/mips-vm.sh

@@ -0,0 +1,55 @@
+#!/usr/bin/env bash
+
+cleanup(){
+    test -n "$rootfs" && test -f $rootfs && rm $rootfs
+}
+trap 'exit 1' INT HUP QUIT TERM ALRM USR1
+trap 'cleanup' EXIT
+
+usage(){
+    echo "usage: $(basename $0) [--background /path/to/state_directory] kernel rootimg [initramfs]"
+    echo -e "\nWithout --background, use C-p c (not C-a c) to switch to the monitor"
+    exit 1
+}
+
+if test "$1" = "--background" ; then
+    statedir=$2
+    if test -z "$statedir" || ! test -d $statedir ; then
+	usage
+    fi
+    pid="${statedir}/pid"
+    socket="${statedir}/console"
+    monitor="${statedir}/monitor"
+    echo "running in background, socket is $socket, pid $pid"
+    flags="--daemonize --pidfile $pid -serial unix:$socket,server,nowait -monitor unix:$monitor,server,nowait"
+    shift;shift
+else
+    flags="-serial mon:stdio"
+fi
+
+test -n "$2" || usage
+
+lan=${LAN-"socket,mcast=230.0.0.1:1235,localaddr=127.0.0.1"}
+
+rootfs=$(mktemp run-liminix-vm-fs-XXXXXX)
+dd if=/dev/zero of=$rootfs bs=1M count=16 conv=sync
+dd if=$2 of=$rootfs bs=65536 conv=sync,nocreat,notrunc
+
+if test -n "$3"; then
+    initramfs="-initrd $3"
+fi
+
+
+INIT=${INIT-/bin/init}
+echo $QEMU_OPTIONS
+qemu-system-mips \
+    -M malta -m 256 \
+    -echr 16 \
+    -append "liminix default console=ttyS0,38400n8 panic=10 oops=panic init=$INIT loglevel=8 root=/dev/mtdblock0 block2mtd.block2mtd=/dev/vda,65536" \
+    -drive file=$rootfs,format=raw,readonly=off,if=virtio,index=0 \
+    ${initramfs} \
+    -netdev socket,id=access,mcast=230.0.0.1:1234,localaddr=127.0.0.1 \
+    -device virtio-net,disable-legacy=on,disable-modern=off,netdev=access,mac=ba:ad:1d:ea:21:02 \
+    -netdev ${lan},id=lan \
+    -device virtio-net,disable-legacy=on,disable-modern=off,netdev=lan,mac=ba:ad:1d:ea:21:01 \
+    -kernel $1 -display none $flags ${QEMU_OPTIONS}