@echo off
if exist sd.bin goto run
qemu-img create -f raw sd.bin 64M

:run
qemu-system-riscv64 -nographic -machine virt -m 256M -kernel rtthread.bin ^
-drive if=none,file=sd.bin,format=raw,id=blk0 -device virtio-blk-device,drive=blk0,bus=virtio-mmio-bus.0 ^
-netdev user,id=tap0 -device virtio-net-device,netdev=tap0,bus=virtio-mmio-bus.1 ^
-device virtio-serial-device -chardev socket,host=127.0.0.1,port=4321,server=on,wait=off,telnet=on,id=console0 -device virtserialport,chardev=console0