#!/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')
RED=$(echo -en '\001\033[00;31m\002')

## Configuration
vcpu=4
memory=8
drive="CREATE_YOUR_DISK.qcow2"
fw1="RISCV_VIRT_CODE.fd "
fw2="RISCV_VIRT_VARS.fd"
ssh_port=12055
cdrom="openEuler-24.03-SP2-LLVM-riscv64-dvd.iso"

cmd="/PATH/TO/PATCHED/qemu-system-riscv64 \
  -nographic -machine virt,pflash0=pflash0,pflash1=pflash1,acpi=off\
  -smp "$vcpu" -m "$memory"G \
  -cpu rva23s64,sv39=on \
  -display gtk \
  -audiodev pa,id=snd0 \
  -blockdev node-name=pflash0,driver=file,read-only=on,filename="$fw1" \
  -blockdev node-name=pflash1,driver=file,filename="$fw2" \
  -drive file="$drive",format=qcow2,id=hd0,if=none \
  -device virtio-blk-device,drive=hd0,bootindex=1 \
  -drive file="$cdrom",if=none,id=ISO,format=raw,media=cdrom \
  -device virtio-blk-device,drive=ISO,bootindex=2 \
  -object rng-random,filename=/dev/urandom,id=rng0 \
  -device virtio-gpu \
  -device virtio-rng-device,rng=rng0 \
  -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 -device usb-audio,audiodev=snd0"

echo ${RED}:: PATCHED QEMU IS REQUIRED TO BOOT THIS IMAGE.${RESTORE}
echo ${RED}:: LEARN MORE @ README.txt${RESTORE}
echo ${YELLOW}:: QEMU 10.1.0 or above is required for supporting RVA23S64.${RESTORE}
echo ""
echo ${RED}:: CREATE A QCOW2 DISK FIRST IF INSTALLING FROM ISO.${RESTORE}
echo ${YELLOW}:: Ensure ONLY ONE .qcow2 file is in the current directory.${RESTORE}
echo ""
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 ""
echo ${YELLOW}:: Tip: If \'ping\' reports permission error, try reinstalling \'iputils\'. ${RESTORE}
echo ${YELLOW}:: HOWTO -\> \'sudo dnf reinstall iputils\' ${RESTORE}
echo ""

sleep 2

eval $cmd