#!/usr/bin/env bash

# The script is created for starting a riscv64 qemu virtual machine with specific parameters.

RESTORE=$(echo -en '\001\033[0m\002')
YELLOW=$(echo -en '\001\033[00;33m\002')

## Configuration
vcpu=8
memory=8
drive="openEuler-22.03-V1-riscv64-qemu.qcow2"
fw="fw_payload_oe_qemuvirt.elf"
ssh_port=12055

cmd="qemu-system-riscv64 \
  -nographic -machine virt \
  -smp "$vcpu" -m "$memory"G \
  -kernel "$fw" \
  -bios none \
  -drive file="$drive",format=qcow2,id=hd0 \
  -object rng-random,filename=/dev/urandom,id=rng0 \
  -device virtio-vga \
  -device virtio-rng-device,rng=rng0 \
  -device virtio-blk-device,drive=hd0 \
  -device virtio-net-device,netdev=usernet \
  -netdev user,id=usernet,hostfwd=tcp::"$ssh_port"-:22 \
  -device qemu-xhci -usb -device usb-kbd -device usb-tablet \
  -append 'root=/dev/vda1 rw console=ttyS0 swiotlb=1 loglevel=3 systemd.default_timeout_start_sec=600 selinux=0 highres=off mem="$memory_append"M earlycon' "

echo ${YELLOW}:: Starting VM...${RESTORE}
echo ${YELLOW}:: Using following configuration${RESTORE}
echo ""
echo ${YELLOW}vCPU Cores: "$vcpu"${RESTORE}
echo ${YELLOW}Memory: "$memory"G${RESTORE}
echo ${YELLOW}Disk: "$drive"${RESTORE}
echo ${YELLOW}SSH Port: "$ssh_port"${RESTORE}
echo ""
echo ${YELLOW}:: Tip: Try setting DNS manually if QEMU user network doesn\'t work well. ${RESTORE}
echo ${YELLOW}:: HOWTO -\> https://serverfault.com/a/810639 ${RESTORE}
echo ""

sleep 2

eval $cmd