Yocto Layers

The Armv8-R AArch64 Software Stack is provided through the GitLab repository: https://gitlab.arm.com/automotive-and-industrial/v8r64. The v8r64 repository provides a Yocto Project compatible layer – meta-armv8r64-extras – with target platform fvp-baser-aemv8r64 extensions for Armv8-R AArch64. Currently this layer extends the fvp-baser-aemv8r64 machine definition from the meta-arm-bsp layer in the meta-arm repository.

The following diagram illustrates the layers which are integrated in the Software Stack, which are further expanded below.

• poky layers (meta, meta-poky)

  • URL: https://git.yoctoproject.org/poky/?h=langdale

  • Provides the base configuration, including the ‘poky’ distro.

• meta-arm layers (meta-arm-bsp, meta-arm, meta-arm-toolchain)

  • URL: https://git.yoctoproject.org/meta-arm/?h=langdale

  • meta-arm-bsp contains the board support to boot baremetal Linux for the fvp-baser-aemv8r64 machine. It includes

    • The base device tree

    • Machine-specific boot-wrapper-aarch64 patches

    • Machine-specific U-Boot patches

  • meta-arm contains:

    • A recipe for the FVP_Base_AEMv8R model itself

    • The base recipe for boot-wrapper-aarch64

  • meta-arm-toolchain is not used, but is a dependency of meta-arm.

• meta-virtualization

  • URL: https://git.yoctoproject.org/meta-virtualization/?h=langdale

  • Included for the Virtualization stack only.

• meta-openembedded layers (meta-oe, meta-python, meta-filesystems, meta-networking)

  • URL: http://git.openembedded.org/meta-openembedded?h=langdale

  • These are dependencies of meta-virtualization and meta-zephyr. meta-oe and meta-python are included for all configurations. meta-filesystems and meta-networking are included for the Virtualization stack only.

• meta-zephyr layer (meta-zephyr-core)

  • URL: https://git.yoctoproject.org/meta-zephyr/?h=langdale

  • Provides Zephyr SDK bundle, which is used to build Zephyr applications.

  • Provides recipes for zephyr-helloworld, zephyr-synchronization and zephyr-philosophers.

• meta-openamp

  • URL: https://github.com/OpenAMP/meta-openamp

  • Included for the Virtualization stack only.

  • Provides support for building libmetal and libopen_amp libraries.