N: Suniel Mahesh <sunil@amarulasolutions.com>
F: board/firefly/
+F: board/friendlyarm/nanopi-m4
F: board/orangepi/orangepi-rk3399
F: board/pine64/rockpro64
F: board/radxa/rockpi-4
F: board/radxa/rockpi-n8
F: board/radxa/rockpi-n10
+F: configs/nanopi_m4_defconfig
F: configs/orangepi_rk3399_defconfig
F: configs/roc_pc_rk3399_defconfig
F: configs/rock_pi_4_defconfig
--- /dev/null
+FriendlyARM NANOPI-M4
+=====================
+
+Build:
+
+ $ make nanopi_m4_defconfig
+ $ make
+
+Files created in output directory
+=================================
+
+output/images
+
+├── bl31.elf
+├── boot.vfat
+├── extlinux
+├── idbloader.img
+├── Image
+├── rk3399-nanopi-m4.dtb
+├── rootfs.ext2
+├── rootfs.ext4 -> rootfs.ext2
+├── rootfs.tar
+├── sdcard.img
+├── u-boot.bin
+└── u-boot.itb
+
+Creating bootable SD card:
+==========================
+
+Simply invoke (as root)
+
+sudo dd if=output/images/sdcard.img of=/dev/sdX && sync
+
+Where X is your SD card device
+
+Serial console
+--------------
+
+Baudrate for this board is 1500000
+
+Login:
+------
+Enter 'root' as login user, and the prompt is ready.
+
+https://wiki.amarulasolutions.com/bsp/rockchip/rk3399/nanopi_m4.html
--- /dev/null
+# Architecture
+BR2_aarch64=y
+BR2_cortex_a72_a53=y
+
+# Linux headers same as kernel, a 5.8 series
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_8=y
+
+# Firmware
+BR2_TARGET_ARM_TRUSTED_FIRMWARE=y
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_GIT=y
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_REPO_URL="https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git"
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_REPO_VERSION="11a0a46a899fcc3b1fdb214b382f3d7495d88eca"
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_PLATFORM="rk3399"
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_BL31=y
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_NEEDS_ARM32_TOOLCHAIN=y
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_IMAGES=""
+
+# Bootloader
+BR2_TARGET_UBOOT=y
+BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
+BR2_TARGET_UBOOT_CUSTOM_VERSION=y
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2020.07"
+BR2_TARGET_UBOOT_BOARD_DEFCONFIG="nanopi-m4-rk3399"
+BR2_TARGET_UBOOT_NEEDS_DTC=y
+BR2_TARGET_UBOOT_NEEDS_PYTHON3=y
+BR2_TARGET_UBOOT_NEEDS_ATF_BL31=y
+BR2_TARGET_UBOOT_NEEDS_ATF_BL31_ELF=y
+BR2_TARGET_UBOOT_FORMAT_CUSTOM=y
+BR2_TARGET_UBOOT_FORMAT_CUSTOM_NAME="u-boot.itb"
+BR2_TARGET_UBOOT_SPL=y
+BR2_TARGET_UBOOT_SPL_NAME="idbloader.img"
+
+# Kernel
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.8.2"
+BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y
+BR2_LINUX_KERNEL_DTS_SUPPORT=y
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="rockchip/rk3399-nanopi-m4"
+BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
+
+# Filesystem
+BR2_TARGET_GENERIC_HOSTNAME="nanopi-m4"
+BR2_TARGET_GENERIC_ISSUE="Welcome to NANOPI-M4"
+BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_EXT2_4=y
+BR2_PACKAGE_HOST_DOSFSTOOLS=y
+BR2_PACKAGE_HOST_GENIMAGE=y
+BR2_PACKAGE_HOST_MTOOLS=y
+BR2_PACKAGE_HOST_UBOOT_TOOLS=y
+BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
+BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/friendlyarm/nanopi-m4/genimage.cfg"
+BR2_ROOTFS_POST_BUILD_SCRIPT="board/friendlyarm/nanopi-m4/post-build.sh"