# Build the RD-V3 Reference Platform Software Stack ## In this learning path - [Introduction](https://learn.arm.com/learning-paths/servers-and-cloud-computing/neoverse-rdv3-swstack/) - [Learn about the Arm RD-V3 Platform](https://learn.arm.com/learning-paths/servers-and-cloud-computing/neoverse-rdv3-swstack/1_introduction_rdv3/) - [Understand the CSS-V3 boot flow and firmware stack](https://learn.arm.com/learning-paths/servers-and-cloud-computing/neoverse-rdv3-swstack/2_rdv3_bootseq/) - [Build the RD-V3 Reference Platform Software Stack](https://learn.arm.com/learning-paths/servers-and-cloud-computing/neoverse-rdv3-swstack/3_rdv3_sw_build/) - [Simulate RD-V3 Boot Flow on Arm FVP](https://learn.arm.com/learning-paths/servers-and-cloud-computing/neoverse-rdv3-swstack/4_rdv3_on_fvp/) - [Simulate Dual Chip RD-V3-R1 Platform](https://learn.arm.com/learning-paths/servers-and-cloud-computing/neoverse-rdv3-swstack/5_rdv3_modify/) - [Next Steps](https://learn.arm.com/learning-paths/servers-and-cloud-computing/neoverse-rdv3-swstack/_next-steps/) ## Building the RD-V3 Reference Platform Software Stack In this module, you’ll set up your development environment on any Arm-based server and build the firmware stack required to simulate the RD-V3 platform. This Learning Path was tested on an AWS `m7g.4xlarge` Arm-based instance running Ubuntu 22.04. ## Step 1: Set up your development environment First, check that your system is current and install the required dependencies: ``` sudo apt update sudo apt install -y curl git ``` Configure git (optional): ``` git config --global user.name "" git config --global user.email "" ``` ## Step 2: Fetch the source code The RD‑V3 platform firmware stack consists of multiple components, most maintained in separate Git repositories, such as: - TF‑A - SCP/MCP - RSE (TF-M) - UEFI (EDK II) - Linux kernel - Buildroot - kvmtool (lkvm) - RMM (optional) Use the repo tool with the RD-V3 manifest to sync these sources from multiple upstreams consistently (typically to a pinned release tag). It simplifies syncing the full platform software stack from multiple upstreams. If `repo` is not installed, you can download it and add it to your `PATH`: ``` mkdir -p ~/.bin PATH="${HOME}/.bin:${PATH}" curl https://storage.googleapis.com/git-repo-downloads/repo > ~/.bin/repo chmod a+rx ~/.bin/repo ``` Once ready, create a workspace and initialize the repo manifest. This Learning Path uses a pinned manifest to ensure reproducibility across different environments. This locks all component repositories to known-good commits that are validated and aligned with a specific FVP version. For this session, use `pinned-rdv3.xml` and `RD-INFRA-2025.07.03`: ``` cd ~ mkdir rdv3 cd rdv3 ``` Initialize and sync the source code tree: ``` repo init -u https://git.gitlab.arm.com/infra-solutions/reference-design/infra-refdesign-manifests.git -m pinned-rdv3.xml -b refs/tags/RD-INFRA-2025.07.03 --depth=1 repo sync -c -j $(nproc) --fetch-submodules --force-sync --no-clone-bundle --retry-fetches=5 ``` Once synced, the output should look like: ``` __output__ Syncing: 95% (19/20), done in 2m36.453s __output__ Syncing: 100% (83/83) 2:52 | 1 job | 0:01 platsw/edk2-platforms @ uefi/edk2/edk2-platformsrepo sync has finished successfully. ``` **Note**: As of the time of writing, the latest release tag is `RD-INFRA-2025.07.03`. Newer tags might be available in future updates. This manifest fetches the required sources, including: - TF‑A - SCP / RSE firmware - EDK II (UEFI) - Linux kernel - Buildroot and platform scripts ## Step 3: Build the Docker Image There are two supported methods for building the reference firmware stack: **host-based** and **container-based**. - The **host-based** build installs all required dependencies directly on your local system and executes the build natively. - The **container-based** build runs the compilation process inside a pre-configured Docker image, ensuring consistent results and isolation from host environment issues. In this Learning Path, you will use the **container-based** approach. The container image uses your host source directory (`~/rdv3`) and performs the build inside Docker. Ensure Docker is installed on your machine. You can follow this [installation guide](https://learn.arm.com/install-guides/docker/). After Docker is installed, you’re ready to build the container image. The `container.sh` script is a wrapper that builds the container using default settings for the Dockerfile and image name. You can customize these by using the `-f` (Dockerfile) and `-i` (image name) options, or by editing the script directly. To view all available options: ``` cd ~/rdv3/container-scripts ./container.sh -h ``` To build the container image: ``` ./container.sh build ``` The build procedure can take a few minutes, depending on network bandwidth and CPU performance. This Learning Path was tested on an AWS `m7g.4xlarge` instance, and the build took 250 seconds. Expected output: ``` __output__ Building docker image: rdinfra-builder ... __output__ [+] Building 239.7s (19/19) FINISHED docker:default __output__ => [internal] load build definition from rd-infra-arm64 0.0s __output__ => => transferring dockerfile: 4.50kB 0.0s __output__ => [internal] load metadata for docker.io/library/ubuntu:jammy-20240911.1 1.0s __output__ => [internal] load .dockerignore 0.0s __output__ => => transferring context: 2B 0.0s __output__ => [internal] load build context 0.0s __output__ => => transferring context: 10.80kB 0.0s __output__ => [ 1/14] FROM docker.io/library/ubuntu:jammy-20240911.1@sha256:0e5e4a57c2499249aafc3b40fcd541e9a456aab7296681a3994d631587203f97 1.7s ``` Verify the image: ``` docker images ``` You should see a docker image called `rdinfra-builder`: ``` __output__ REPOSITORY TAG IMAGE ID CREATED SIZE __output__ rdinfra-builder latest 3a395c5a0b60 4 minutes ago 8.12GB ``` Quick interactive test: ``` ./container.sh -v ~/rdv3 run ``` This script mounts your source directory (`~/rdv3`) into the container and opens a shell session at that location. Inside the container, you should see a prompt like this: ``` __output__ Running docker image: rdinfra-builder ... __output__ To run a command as administrator (user "root"), use "sudo ". __output__ See "man sudo_root" for details. __output__ __output__ your-username:hostname:/home/your-username/rdv3$ ``` You can explore the container environment if you wish, then type `exit` to return to the host. ## Step 4: Build firmware Building the full firmware stack involves compiling several components and packaging them for simulation. The following command runs build and then package inside the Docker image: - **build** compiles all individual components of the firmware stack, including TF‑A, SCP, RSE, UEFI, Linux kernel, and rootfs - **package** consolidates outputs into simulation-ready artifacts for FVP Ensure you’re back in the host OS, then run: ``` cd ~/rdv3 docker run --rm \ -v "$PWD:$PWD" \ -w "$PWD" \ --mount type=volume,dst="$HOME" \ --env ARCADE_USER="$(id -un)" \ --env ARCADE_UID="$(id -u)" \ --env ARCADE_GID="$(id -g)" \ -t -i rdinfra-builder \ bash -c "./build-scripts/rdinfra/build-test-buildroot.sh -p rdv3 build && \ ./build-scripts/rdinfra/build-test-buildroot.sh -p rdv3 package" ``` The build artifacts will be placed under `~/rdv3/output/rdv3/rdv3/`, where the last `rdv3` in the directory path corresponds to the selected platform name. Inspect the artifacts: ``` ls ~/rdv3/output/rdv3/rdv3 -al ``` Expected output: ``` __output__ total 7092 __output__ drwxr-xr-x 2 ubuntu ubuntu 4096 Aug 12 13:15 . __output__ drwxr-xr-x 4 ubuntu ubuntu 4096 Aug 12 13:15 .. __output__ lrwxrwxrwx 1 ubuntu ubuntu 25 Aug 12 13:15 Image -> ../components/linux/Image __output__ lrwxrwxrwx 1 ubuntu ubuntu 35 Aug 12 13:15 Image.defconfig -> ../components/linux/Image.defconfig __output__ -rw-r--r-- 1 ubuntu ubuntu 7250838 Aug 12 13:15 fip-uefi.bin __output__ lrwxrwxrwx 1 ubuntu ubuntu 32 Aug 12 13:15 lcp_ramfw.bin -> ../components/rdv3/lcp_ramfw.bin ``` Reference mapping: | Component | Output Files | Description | |--------------------------|-------------------------------------------|--------------------------------| | TF‑A | `bl1.bin`, `bl2.bin`, `bl31.bin`, `fip.bin` | Entry-level boot firmware | | SCP and RSE firmware | `scp.bin`, `mcp_rom.bin`, etc. | Platform power/control | | UEFI | `uefi.bin`, `flash0.img` | Boot device enumeration | | Linux kernel | `Image` | OS payload | | Initrd | `rootfs.cpio.gz` | Minimal filesystem | ## Optional: run the build manually from inside the container You can also build from within an interactive container session (useful for debugging or partial builds): Start your docker container. In your running container shell: ``` cd ~/rdv3 ./build-scripts/rdinfra/build-test-buildroot.sh -p rdv3 build ./build-scripts/rdinfra/build-test-buildroot.sh -p rdv3 package ``` You’ve now prepared and built the full RD-V3 firmware stack. In the next section, you’ll install the appropriate FVP and simulate the full boot sequence, bringing the firmware to life on a virtual platform.