1 files changed, 96 insertions, 0 deletions

diff --git a/tools/qemu.sh b/tools/qemu.sh
new file mode 100755
index 0000000..428954f
--- /dev/null
+++ b/tools/qemu.sh
@@ -0,0 +1,96 @@
+#!/usr/bin/env bash
+# =============================================================================
+# tools/qemu.sh — Run raisernics in QEMU with various options
+#
+# Usage:
+#   ./tools/qemu.sh                     # serial console (no graphics)
+#   ./tools/qemu.sh --gui               # graphical window
+#   ./tools/qemu.sh --debug             # GDB stub on :1234
+#   ./tools/qemu.sh --image foo.img     # boot from raw disk image
+#   ./tools/qemu.sh --bios /path/to.fd  # custom OVMF
+#   ./tools/qemu.sh --mem 512M          # memory size
+#   ./tools/qemu.sh --smp 2             # SMP cores
+# =============================================================================
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
+cd "$SCRIPT_DIR"
+
+# Defaults
+GUI_FLAG=""
+DEBUG_FLAG=""
+DRIVE_ARGS=(-drive file=fat:rw:esp,format=raw)
+OVMF="${OVMF:-/usr/share/edk2/x64/OVMF.4m.fd}"
+MEM="${MEM:-256M}"
+SMP="${SMP:-1}"
+
+# Pre-build
+make all
+
+# Parse args
+while [ $# -gt 0 ]; do
+        case "$1" in
+        --gui | -g)
+                GUI_FLAG="-vga std"
+                shift
+                ;;
+        --debug | -d)
+                DEBUG_FLAG="-s -S"
+                shift
+                ;;
+        --image | -i)
+                _img_file="$(printf -- '-drive file=%s,format=raw,if=none,id=hd' "$2")"
+                DRIVE_ARGS=("$_img_file" '-device' 'ide-hd,drive=hd')
+                shift 2
+                ;;
+        --bios | -b)
+                OVMF="$2"
+                shift 2
+                ;;
+        --mem)
+                MEM="$2"
+                shift 2
+                ;;
+        --smp)
+                SMP="$2"
+                shift 2
+                ;;
+        --help | -h)
+                head -20 "$0" | grep "^# " | sed 's/^# //'
+                exit 0
+                ;;
+        *)
+                echo "Unknown option: $1"
+                exit 1
+                ;;
+        esac
+done
+
+QEMU_CMD=(
+        qemu-system-x86_64
+        -bios "$OVMF"
+        "${DRIVE_ARGS[@]}"
+        -serial stdio
+        -m "$MEM"
+        -machine q35
+        -cpu qemu64
+        -no-reboot
+        -smp "$SMP"
+)
+
+[ -n "$GUI_FLAG" ] && QEMU_CMD+=("$GUI_FLAG")
+if [ -n "$DEBUG_FLAG" ]; then
+        # Split the flag string safely into words
+        read -ra dbg <<< "$DEBUG_FLAG"
+        QEMU_CMD+=("${dbg[@]}")
+fi
+
+echo "  OVMF  : $OVMF"
+echo "  Drive : ${DRIVE_ARGS[*]}"
+echo "  Mem   : $MEM"
+echo "  SMP   : $SMP"
+echo "  GDB   : $([ -n "$DEBUG_FLAG" ] && echo ':1234' || echo 'off')"
+echo "  GUI   : $([ -n "$GUI_FLAG" ] && echo 'yes' || echo 'no')"
+echo ""
+
+exec "${QEMU_CMD[@]}"