arm¶

Artifacts:

Important

If you are using a prebuilt Target, your artifacts may begin with lmp-base-console-image instead.

└── arm
    ├── lmp-factory-image-qemuarm.wic.gz
    ├── other
    │   └── lmp-factory-image-qemuarm.wic.qcow2 # optional
    └── u-boot-qemuarm.bin

Note

You can fetch either the compressed .wic.gz or the .qcow2 artifact, you do not need both. Use the .qcow2 artifact if you wish to change the QEMU disk size.

Booting in QEMU¶

Important

These instructions require QEMU 5.2 or later.

Note

Make sure to set the FIOCTL_FACTORY environment variable:

export FIOCTL_FACTORY=<factory>

List available Targets and decide on which to boot:
```
fioctl targets list
```
Make a directory for the artifacts and cd into it:
```
mkdir -p lmp-qemu/arm
cd lmp-qemu/arm
```
Download the artifacts needed for arm. These can be found under the Targets tab for your Factory. Resizable qcow2 images are located in the other folder.
Optional. Resize the qcow2 image:
```
qemu-img resize -f qcow2 lmp-factory-image-qemuarm.wic.qcow2 8G
```
The above example resizes to 8G—set to meet your needs.
Tip
If you already have the wic file, you can use it to create a qcow image:
```
qemu-img create -f qcow2 -F raw -b lmp-factory-image-qemuarm.wic lmp-factory-image-qemuarm.wic.qcow2
```
You can then use qemu-img resize as above.

The directory tree should now look like this:

lmp-qemu/
└── arm
    ├── lmp-factory-image-qemuarm.wic
    ├── lmp-factory-image-qemuarm.wic.qcow2 # optional, needed if resizing is required
    └── u-boot-qemuarm.bin

Run the QEMU script below against the artifacts inside of lmp-qemu/. You can save this as run.sh inside the directory for convenience.

Important

If you are using the qcow2 image, change the script so that:

file= is set as the qcow2 image name, i.e., lmp-factory-image-qemuarm.wic.qcow2

format=raw is replaced with format=qcow2.

For example:

qemu-system-arm -machine virt,highmem=off -cpu cortex-a7 -m 1024M \
-bios u-boot-qemuarm.bin \
-serial mon:vc -serial null \
-drive id=disk0,file=mp-factory-image-qemuarm.wic.qcow2,if=none,format=qcow2 -device virtio-blk-device,drive=disk0 \
-object rng-random,filename=/dev/urandom,id=rng0 -device virtio-rng-pci,rng=rng0 \
-device virtio-net-device,netdev=usernet \
-netdev user,id=usernet,hostfwd=tcp::22222-:22 \
-no-acpi -d unimp -nographic

Note

The QEMU CLI passes the necessary flags and parameters to the appropriate qemu-system command. This includes path to the image, CPU, network, and other device information. For specifics, consult QEMU’s Documentation.

Booting Graphically¶

In order to boot QEMU with an OpenGL capable virtual GPU (required for Wayland/Weston), add the following flags to the QEMU CLI:

-display gtk,gl=on -device virtio-gpu-pci

Do not copy the -nographic flag at the end of the QEMU CLI below.

QEMU CLI¶

qemu-system-arm -machine virt,highmem=off -cpu cortex-a7 -m 1024M \
    -bios u-boot-qemuarm.bin \
    -serial mon:vc -serial null \
    -drive id=disk0,file=lmp-factory-image-qemuarm.wic,if=none,format=raw -device virtio-blk-device,drive=disk0 \
    -object rng-random,filename=/dev/urandom,id=rng0 -device virtio-rng-pci,rng=rng0 \
    -device virtio-net-device,netdev=usernet \
    -netdev user,id=usernet,hostfwd=tcp::22222-:22 \
    -no-acpi -d unimp -nographic

Hint

To access QEMU via SSH, append these parameters to the QEMU CLI command above:

-netdev user,id=net0,hostfwd=tcp::2222-:22

Then, run SSH with:

ssh -p 2222 fio@localhost

Tip

You can register your device by following the steps from Registering Your Device.