#!/usr/bin/env bash
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
IMAGE="${1:-$PROJECT_ROOT/build/x86_64/redbear-mini/harddrive.img}"
BIOS="${OVMF_BIOS:-/usr/share/edk2/x64/OVMF_CODE.4m.fd}"
RAM="${QEMU_RAM:-8192}"

if [ ! -f "$IMAGE" ]; then
    echo "ERROR: Image not found at $IMAGE" >&2
    echo "       Run 'make all CONFIG_NAME=redbear-mini' first." >&2
    exit 1
fi

if [ ! -f "$BIOS" ]; then
    echo "ERROR: OVMF firmware not found at $BIOS" >&2
    echo "       Install edk2-ovmf or set OVMF_BIOS to the correct path." >&2
    exit 1
fi

exec qemu-system-x86_64 \
    -m "${RAM}" \
    -drive if=pflash,format=raw,readonly=on,file="$BIOS" \
    -drive file="$IMAGE",format=raw \
    -serial mon:stdio