1BR2_arm=y 2BR2_cortex_a72=y 3BR2_ARM_FPU_NEON_VFPV4=y 4 5BR2_TOOLCHAIN_BUILDROOT_CXX=y 6 7BR2_SYSTEM_DHCP="eth0" 8 9# Linux headers same as kernel, a 5.10 series 10BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_10=y 11 12BR2_LINUX_KERNEL=y 13BR2_LINUX_KERNEL_CUSTOM_TARBALL=y 14BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,raspberrypi,linux,581049d718caf95f5feb00607ac748d5841cf27c)/linux-581049d718caf95f5feb00607ac748d5841cf27c.tar.gz" 15BR2_LINUX_KERNEL_DEFCONFIG="bcm2711" 16 17# Build the DTB from the kernel sources 18BR2_LINUX_KERNEL_DTS_SUPPORT=y 19BR2_LINUX_KERNEL_INTREE_DTS_NAME="bcm2711-rpi-cm4" 20 21BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y 22 23BR2_PACKAGE_RPI_FIRMWARE=y 24BR2_PACKAGE_RPI_FIRMWARE_VARIANT_PI4=y 25BR2_PACKAGE_RPI_FIRMWARE_CONFIG_FILE="board/raspberrypicm4io-64/config_cm4io.txt" 26 27# Required tools to create the SD image 28BR2_PACKAGE_HOST_DOSFSTOOLS=y 29BR2_PACKAGE_HOST_GENIMAGE=y 30BR2_PACKAGE_HOST_MTOOLS=y 31 32# Required tool to flash CM4 eMMC memory 33BR2_PACKAGE_HOST_RASPBERRYPI_USBBOOT=y 34 35# Filesystem / image 36BR2_TARGET_ROOTFS_EXT2=y 37BR2_TARGET_ROOTFS_EXT2_4=y 38BR2_TARGET_ROOTFS_EXT2_SIZE="120M" 39# BR2_TARGET_ROOTFS_TAR is not set 40BR2_ROOTFS_POST_BUILD_SCRIPT="board/raspberrypicm4io/post-build.sh" 41BR2_ROOTFS_POST_IMAGE_SCRIPT="board/raspberrypicm4io/post-image.sh" 42