--- /dev/null
+.. SPDX-License-Identifier: GPL-2.0+
+.. Copyright (C) 2020 Amit Singh Tomar <amittomer25@gmail.com>
+
+CUBIEBOARD7
+===========
+
+About this
+----------
+
+This document describes build and flash steps for Actions S700 SoC based Cubieboard7
+board.
+
+Cubieboard7 initial configuration
+---------------------------------
+
+Default Cubieboard7 comes with pre-installed Android where U-Boot is configured with
+a bootdelay of 0, entering a prompt by pressing keys does not seem to work.
+
+Though, one can enter ADFU mode and flash debian image(from host machine) where
+getting into u-boot prompt is easy.
+
+Enter ADFU Mode
+----------------
+
+Before write the firmware, let the development board entering the ADFU mode: insert
+one end of the USB cable to the PC, press and hold the ADFU button, and then connect
+the other end of the USB cable to the Mini USB port of the development board, release
+the ADFU button, after connecting it will enter the ADFU mode.
+
+Check whether entered ADFU Mode
+--------------------------------
+
+The user needs to run the following command on the PC side to check if the ADFU
+device is detected. ID realted to "Actions Semiconductor Co., Ltd" means that
+the PC side has been correctly detected ADFU device, the development board
+also enter into the ADFU mode.
+
+.. code-block:: none
+
+ $ lsusb
+ Bus 001 Device 005: ID 04f2:b2eb Chicony Electronics Co., Ltd
+ Bus 001 Device 004: ID 0a5c:21e6 Broadcom Corp. BCM20702 Bluetooth 4.0 [ThinkPad]
+ Bus 001 Device 003: ID 046d:c534 Logitech, Inc. Unifying Receiver
+ Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
+ Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
+ Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
+ Bus 003 Device 013: ID 10d6:10d6 Actions Semiconductor Co., Ltd
+ Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
+
+Flashing debian image
+---------------------
+
+.. code-block:: none
+
+ $ sudo ./ActionsFWU.py --fw=debian-stretch-desktop-cb7-emmc-v2.0.fw
+ ActionsFWU.py : 1.0.150828.0830
+ libScript.so : 2.3.150825.0951
+ libFileSystem.so: 2.3.150825.0952
+ libProduction.so: 2.3.150915.1527
+ =====burn all partition====
+ FW_VER: 3.10.37.180608
+ 3% DOWNLOAD ADFUDEC ...
+ 5% DOWNLOAD BOOT PARA ...
+ 7% SWITCH ADFUDEC ...
+ 12% DOWNLOAD BL31 ...
+ 13% DOWNLOAD BL32 ...
+ 15% DOWNLOAD VMLINUX ...
+ 20% DOWNLOAD INITRD ...
+ 24% DOWNLOAD FDT ...
+ 27% DOWNLOAD ADFUS ...
+ 30% SWITCH ADFUS ...
+ 32% DOWNLOAD MBR ...
+ 35% DOWNLOAD PARTITIONS ...
+ WRITE_MBRC_PARTITION
+ 35% write p0 size = 2048 : ok
+ WRITE_BOOT_PARTITION
+ 35% write p1 size = 2048 : ok
+ WRITE_MISC_PARTITION
+ 36% write p2 size = 98304 : ok
+ WRITE_SYSTEM_PARTITION
+ 94% write p3 size = 4608000 : ok
+ FORMAT_SWAP_PARTITION
+ 94% write p4 size = 20480 : ok
+ 95% TRANSFER OVER ...
+ Firmware upgrade successfully!
+
+Debian image can be downloaded from here[1].
+
+Once debian image is flashed, one can get into u-boot prompt by pressing any key and from
+there run ums command(make sure, usb cable is connected between host and target):
+
+.. code-block:: none
+
+ owl> ums 0 mmc 1
+
+Above command would mount debian image partition on host machine.
+
+Building U-BOOT proper image
+----------------------------
+
+.. code-block:: none
+
+ $ make clean
+ $ export CROSS_COMPILE=aarch64-linux-gnu-
+ $ make ARCH=arm cubieboard7_defconfig
+ $ make u-boot-dtb.img -j16
+
+u-boot-dtb.img can now be flashed to debian image partition mounted on host machine.
+
+.. code-block:: none
+
+ $ sudo dd if=u-boot-dtb.img of=/dev/sdb bs=1024 seek=3072
+
+[1]: https://pan.baidu.com/s/1uawPr0Jao2HgWFLZCLzHAg#list/path=%2FCubieBoard_Download%2FBoard%2FCubieBoard7%2F%E6%96%B9%E7%B3%96%E6%96%B9%E6%A1%88%E5%BC%80%E5%8F%91%E8%B5%84%E6%96%99%2FImage%2FDebian%2FV2.1-test&parentPath=%2F