ci/docker: add pi zero 2w build

.github/workflows/build.yml

@@ -30,6 +30,9 @@ jobs:
           - os: raspberrypi0w
             arch: armv6l
             artifact: vanilla-raspberrypi0w-image.zip
+          - os: raspberrypizero2w
+            arch: aarch64
+            artifact: vanilla-raspberrypizero2w-image.zip
     runs-on: ubuntu-24.04
     steps:
     - uses: actions/checkout@v4
@@ -62,7 +65,7 @@ jobs:
         tar czf ${{ matrix.platform.artifact }} -C "${{ github.workspace }}/build" .
 
     - name: Archive (Windows/macOS/Raspberry Pi)
-      if: ${{ matrix.platform.os == 'windows' || matrix.platform.os == 'macos' || matrix.platform.os == 'raspberrypi0w' }}
+      if: ${{ matrix.platform.os == 'windows' || matrix.platform.os == 'macos' || matrix.platform.os == 'raspberrypi0w' || matrix.platform.os == 'raspberrypizero2w' }}
       run: |
         cd build
         zip -r ../${{ matrix.platform.artifact }} .

buildroot/board/raspberrypi/config_zero2w_64bit.txt

@@ -0,0 +1,26 @@
+start_file=start.elf
+fixup_file=fixup.dat
+
+kernel=Image
+
+# To use an external initramfs file
+#initramfs rootfs.cpio.gz
+
+# Disable overscan assuming the display supports displaying the full resolution
+# If the text shown on the screen disappears off the edge, comment this out
+disable_overscan=1
+
+# How much memory in MB to assign to the GPU on Pi models having
+# 256, 512 or 1024 MB total memory
+gpu_mem_256=100
+gpu_mem_512=100
+gpu_mem_1024=100
+
+# Enable UART0 for serial console on ttyAMA0
+dtoverlay=miniuart-bt
+
+# enable 64bits support
+arm_64bit=1
+
+# Enable KMSDRM
+dtoverlay=vc4-kms-v3d

buildroot/configs/vanilla_raspberrypizero2w_64_defconfig

@@ -0,0 +1,63 @@
+BR2_aarch64=y
+BR2_ARM_FPU_VFPV4=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
+BR2_GLOBAL_PATCH_DIR="board/raspberrypi/patches"
+BR2_DOWNLOAD_FORCE_CHECK_HASHES=y
+BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y
+# BR2_TARGET_GENERIC_GETTY is not set
+BR2_ROOTFS_OVERLAY="$(BR2_EXTERNAL_VANILLA_PATH)/rootfs"
+BR2_ROOTFS_POST_BUILD_SCRIPT="board/raspberrypizero2w-64/post-build.sh"
+BR2_ROOTFS_POST_IMAGE_SCRIPT="board/raspberrypizero2w-64/post-image.sh"
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
+BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,raspberrypi,linux,ac69f097e1fba94502cbd36278db204120a37943)/linux-ac69f097e1fba94502cbd36278db204120a37943.tar.gz"
+BR2_LINUX_KERNEL_DEFCONFIG="bcm2711"
+BR2_LINUX_KERNEL_CUSTOM_LOGO_PATH="$(BR2_EXTERNAL_VANILLA_PATH)/boot.png"
+BR2_LINUX_KERNEL_DTS_SUPPORT=y
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="broadcom/bcm2710-rpi-zero-2-w"
+BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
+BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
+BR2_PACKAGE_XZ=y
+BR2_PACKAGE_MESA3D=y
+BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_VC4=y
+BR2_PACKAGE_MESA3D_OPENGL_ES=y
+BR2_PACKAGE_SDL2=y
+BR2_PACKAGE_SDL2_KMSDRM=y
+BR2_PACKAGE_SDL2_OPENGLES=y
+BR2_PACKAGE_SDL2_IMAGE=y
+BR2_PACKAGE_SDL2_TTF=y
+BR2_PACKAGE_LINUX_FIRMWARE=y
+BR2_PACKAGE_LINUX_FIRMWARE_RALINK_RT2XX=y
+BR2_PACKAGE_RPI_FIRMWARE=y
+BR2_PACKAGE_RPI_FIRMWARE_BOOTCODE_BIN=y
+BR2_PACKAGE_RPI_FIRMWARE_VARIANT_PI=y
+BR2_PACKAGE_RPI_FIRMWARE_CONFIG_FILE="$(BR2_EXTERNAL_VANILLA_PATH)/board/raspberrypi/config_zero2w_64bit.txt"
+BR2_PACKAGE_ALSA_LIB=y
+BR2_PACKAGE_OPENSSL=y
+BR2_PACKAGE_LIBXML2=y
+BR2_PACKAGE_LIBNL=y
+BR2_PACKAGE_LIBEVDEV=y
+BR2_PACKAGE_KMOD_TOOLS=y
+BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_EXT2_4=y
+BR2_TARGET_ROOTFS_EXT2_SIZE="120M"
+# BR2_TARGET_ROOTFS_TAR is not set
+BR2_PACKAGE_HOST_DOSFSTOOLS=y
+BR2_PACKAGE_HOST_GENIMAGE=y
+BR2_PACKAGE_HOST_KMOD_XZ=y
+BR2_PACKAGE_HOST_MTOOLS=y
+BR2_PACKAGE_RPI_FFMPEG=y
+# BR2_PACKAGE_RPI_FFMPEG_FFMPEG is not set
+BR2_PACKAGE_RPI_FFMPEG_SWSCALE=y
+BR2_PACKAGE_RPI_FFMPEG_ENCODERS="png"
+BR2_PACKAGE_RPI_FFMPEG_DECODERS="h264_v4l2m2m"
+BR2_PACKAGE_RPI_FFMPEG_MUXERS="mp4 image2"
+BR2_PACKAGE_RPI_FFMPEG_DEMUXERS=""
+BR2_PACKAGE_RPI_FFMPEG_PARSERS=""
+BR2_PACKAGE_RPI_FFMPEG_BSFS=""
+BR2_PACKAGE_RPI_FFMPEG_PROTOCOLS=""
+BR2_PACKAGE_RPI_FFMPEG_FILTERS=""
+# BR2_PACKAGE_RPI_FFMPEG_INDEVS is not set
+# BR2_PACKAGE_RPI_FFMPEG_OUTDEVS is not set
+BR2_PACKAGE_VANILLA=y

docker/raspberrypizero2w/Dockerfile

@@ -0,0 +1,39 @@
+FROM debian:bookworm
+
+ARG ARCH=x86_64
+ENV ARCH=${ARCH}
+
+ENV DEBIAN_FRONTEND=noninteractive
+ENV TZ=Etc/UTC
+
+RUN apt -y update
+
+RUN apt -y install which \
+    sed \
+    make \
+    binutils \
+    build-essential \
+    diffutils \
+    gcc \
+    g++ \
+    bash \
+    patch \
+    gzip \
+    bzip2 \
+    perl \
+    tar \
+    cpio \
+    unzip \
+    rsync \
+    file \
+    bc \
+    findutils \
+    gawk \
+    wget \
+    git
+
+RUN git clone --depth 1 --branch 2025.11-rc2 https://github.com/buildroot/buildroot.git /buildroot
+
+ENV FORCE_UNSAFE_CONFIGURE=1
+
+ENTRYPOINT [ "/vanilla/docker/raspberrypi0w/build.sh" ]

docker/raspberrypizero2w/build.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+set -e
+
+make -C /buildroot O=/build BR2_EXTERNAL=/vanilla/buildroot vanilla_raspberrypi0w_defconfig
+/buildroot/utils/config --file /build/.config -e BR2_PACKAGE_VANILLA_USE_LOCAL
+/buildroot/utils/config --file /build/.config --set-str BR2_PACKAGE_VANILLA_LOCAL_PATH /vanilla
+make -C /buildroot O=/build
+
+cd /build/images
+mv /build/images/sdcard.img /install/