328c85778b
Expand the FVP_DATA variable used by the fvpboot.bbclass to load both Xen and its device tree when building arm-autonomy-host image for fvp-base. Issue-Id: SCM-2718 Signed-off-by: Hugo L'Hostis <hugo.lhostis@arm.com> Change-Id: Ia6e2f6a13e84c8e762d297ac34ccbe5417a7793b Signed-off-by: Jon Mason <jon.mason@arm.com>
meta-arm-autonomy Yocto Layer
Introduction
This layer provides an hypervisor based solution (currently based on Xen) for autonomous system. It contains recipes and classes to build host and guest images.
To start using this layer, please check the Quick Start Guide.
Dependencies
This layer depends on several other Yocto layers:
- meta-openembedded (https://git.openembedded.org/meta-openembedded)
- poky (https://git.yoctoproject.org/poky)
- meta-virtualization (https://git.yoctoproject.org/meta-virtualization)
- meta-networking (git://git.openembedded.org/meta-openembedded)
Distribution Features
This layer adds the following Yocto DISTRO_FEATURES:
-
arm-autonomy-host: this feature activates functionalities required to build an autonomy host system. It has the following effects:
- add 'xen' and 'ipv4' to DISTRO_FEATURES.
- add xen backend drivers to linux kernel configuration.
- To reduce the root filesystem image size the kernel image is not installed.
-
arm-autonomy-guest: this feature activates functionalities to run as guest of an autonomy system. It is doing the following:
- add 'ipv4' to DISTRO_FEATURES.
- add xen frontend drivers to linux kernel configuration.
- add console on hvc0 during init.
Bitbake variables
Some recipes and classes in this layer are introducing variables which can be modified by the user in local.conf. Each recipe introducing such variables has a chapter "Bitbake parameters" in its documentation.
Those documentation files should be checked for variables:
BSPs
This layer adds the following machine:
- arm64-autonomy-guest: This machine creates a minimal BSP suitable to be used as an autonomy guest. It is in fact only activating ARM64 architecture and SMP in the linux kernel and is enabling the DISTRO_FEATURE 'arm-autonomy-guest'.
Images
This layer is adding the following images:
- arm-autonomy-host-image-minimal: This image includes all elements required to create a minimal arm-autonomy-host system. This includes xen, and tools to manage xen guests and xenguest images. This image depends on 'arm-autonomy-host' distribution feature.
Recipes and classes
This layer adds the following recipes and classes:
-
xen-devicetree: This is a recipe to modify a device tree blob to add information required to boot xen and a Dom0 linux.
-
xenguest-mkimage: This is a tool used to create and modify images to be used as Xen guests.
-
xenguest-manager: This is a tool used to create/remove/start/stop xen guest generated using xenguest-mkimage.
-
xenguest-network: This recipe add tools and init scripts to create a bridge connected to the external network on the host and allow guests to be connected to it.
Contributing
This project has not put in place a process for contributions currently. If you would like to contribute, please contact the maintainers
Maintainer(s)
- Diego Sueiro diego.sueiro@arm.com
- Bertrand Marquis bertrand.marquis@arm.com