arm¶

Necessary artifacts

└── arm
    ├── lmp-factory-image-qemuarm.wic.gz
    └── u-boot-qemuarm.bin

Booting in QEMU¶

Warning

These instructions require QEMU 5.2 or later.

List available Targets and decide on which to boot:
```
fioctl targets list
```

Note

Make sure to set the FIOCTL_FACTORY environment variable:

export FIOCTL_FACTORY=<factory>

Make a directory to store the artifacts and cd into it.
```
mkdir -p lmp-qemu/arm
cd lmp-qemu/arm
```

Download the necessary artifacts for arm, replace <target_number> with the target you would like to boot

# Download and extract the Factory image
fioctl targets artifacts <target_number> qemuarm/lmp-factory-image-qemuarm.wic.gz | gunzip > lmp-factory-image-qemuarm.wic
# Download ATF + OP-TEE + U-Boot binary
fioctl targets artifacts <target_number> qemuarm/other/u-boot-qemuarm.bin > u-boot-qemuarm.bin

The directory tree should now look like this

lmp-qemu/
└── arm
    ├── lmp-factory-image-qemuarm.wic
    └── u-boot-qemuarm.bin

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

Note

The QEMU CLI passes the necessary flags and parameters to the appropriate qemu-system command, such as 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 inside (required for Wayland/Weston), the following flags need to be added to the QEMU CLI:

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

The -nographic flag must also be removed from the QEMU CLI.

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

Tip

It is possible to access QEMU via SSH by appending 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

Demo¶

Tip

You can register your device following the steps from Register your device.