Mostly-BSD/FreeBSD-AARCH64_and_RISCV64_Using_QEMU.md

## FreeBSD-AARCH64_and_RISCV64_Using_QEMU.md

      
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              FreeBSD-AARCH64_and_RISCV64_Using_QEMU.md
            
          
    How to run FreeBSD ARM64 and RISC-V64 images under FreeBSD x86_64

Quick and easy way to try out FreeBSD Arm64 and RISC-V64 images on a x86_64 host.
Notes:

We are going to use the pre-built VM images supplied by FreeBSD instead of installing from scratch.
We will convert the .raw image files to zvols
We will bridge the network interface on the host and use a tap interface on the VM

Step 1: Install Necessary Packages

pkg install qemu u-boot-qemu-arm64 u-boot-qemu-risckv64 # Qemu + u-boot 
pkg install opensbi # for RISC-V64
pkg install pixz # Fast xz file decompressor (Optional)
Step 2: Download and Extract Images

cd $HOME

FREEBSD_BASE_URL=https://download.freebsd.org/releases/VM-IMAGES/13.0-RELEASE
ARM64_IMAGE_FILE=FreeBSD-13.0-RELEASE-arm64-aarch64.raw
RISCV64_IMAGE_FILE=FreeBSD-13.0-RELEASE-riscv-riscv64.raw

# Fetch and extract ARM64 image
fetch ${FREEBSD_BASE_URL}/aarch64/Latest/${ARM64_IMAGE_FILE}.xz
pixz ${ARM64_IMAGE_FILE}.xz

# Fetch and extract RISC-V64 image
fetch ${FREEBSD_BASE_URL}/riscv64/Latest/${RISCV64_IMAGE_FILE}.xz
pixz ${RISCV64_IMAGE_FILE}.xz
Step 3: Convert Raw Images to ZVOLs

# Assuming you have a zpool called `data`
ZPOOL_NAME='data'
ARM64_ZVOL=Qemu_ARM64_001
RISCV64_ZVOL=Qemu_RISCV64_001

# We'll create a dataset to store our zvols
zfs create -o canmount=off $ZPOOL_NAME/zvols
zfs create -V 10G $ZPOOL_NAME/zvols/$ARM64_ZVOL
zfs create -V 10G $ZPOOL_NAME/zvols/$RISCV64_ZVOL
zfs set compression=on $ZPOOL_NAME/zvols/$ARM64_ZVOL
zfs set compression=on $ZPOOL_NAME/zvols/$RISCV64_ZVOL

dd if=$HOME/$ARM64_IMAGE_FILE \
      of=/dev/zvol/$ZPOOL_NAME/zvols/${ARM64_ZVOL} \
      bs=1M status=progress

gpart revover /dev/zvol/$ZPOOL_NAME/zvols/${ARM64_ZVOL}

dd if=$HOME/$RISCV64_IMAGE_FILE \
      of=/dev/zvol/$ZPOOL_NAME/zvols/$RISCV64_ZVOL \
      bs=1M status=progress

gpart revover /dev/zvol/$ZPOOL_NAME/zvols/$RISCV64_ZVOL
Step 4: Setup Bridged Networking

ETH_DEV='em0' #Chage this to match your host's eth dev.
BRIDGE_DEV='bridge0'
ARM64_TAP='tap_arm64'
RISCV64_TAP='tap_riscv64'

ifconfig $BRIDGE_DEV create
ifconfig tap0 create
ifconfig tap0 name $ARM64_TAP
ifconfig tap1 create
ifconfig tap1 name $RISCV64_TAP
ifconfig $BRIDGE_DEV addm $ETH_DEV addm $ARM64_TAP addm $RISCV64_TAP
ifconfig $ARM64_TAP up
ifconfig $RISCV64_TAP up
ifconfig $BRIDGE_DEV up
Step 5: Run VMs using Qemu

Run ARM64 image

qemu-system-aarch64 -M virt -m 512m -cpu cortex-a57 -nographic \
	-bios /usr/local/share/u-boot/u-boot-qemu-arm64/u-boot.bin \
    -netdev tap,ifname=${ARM64_TAP},script=no,id=net0 \
    -device virtio-net-device,netdev=net0 \
    -drive file=/dev/zvol/${ZPOOL_NAME}/zvols/${ARM64_ZVOL},if=virtio,cache=none,id=hd0,format=raw
Run RISC-V image

qemu-system-riscv64 -M virt -m 512m -nographic \
    -bios /usr/local/share/opensbi/lp64/generic/firmware/fw_jump.elf \
    -kernel /usr/local/share/u-boot/u-boot-qemu-riscv64/u-boot.bin \
    -netdev tap,ifname=${RISCV64_TAP},script=no,id=net0 \
    -device virtio-net-device,netdev=net0 \
    -drive file=/dev/zvol/${ZPOOL_NAME}/zvols/${RISCV64_ZVOL},if=virtio,cache=none,id=hd0,format=raw