Hikey970 Kernel Development Guide
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HiKey970 Kernel Development Guide Issue 01 Date 2018-03-11 Copyright © HiSilicon Technologies Co., Ltd. 2018. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of HiSilicon Technologies Co., Ltd. Trademarks and Permissions , , and other HiSilicon icons are trademarks of HiSilicon Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders. Notice The purchased products, services and features are stipulated by the contract made between HiSilicon and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied. HiSilicon Technologies Co., Ltd. Address: Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China Website: http://www.hisilicon.com Email: support@hisilicon.com Issue 01 (2018-03-11) HiSilicon Proprietary and Confidential Copyright © HiSilicon Technologies Co., Ltd. i HiKey970 Kernel Development Guide Change History Change History Changes between document issues are cumulative. The latest document issue contains all the changes made in earlier issues. Issue 01 (2018-03-11) The first version. Issue 01 (2018-03-11) HiSilicon Proprietary and Confidential Copyright © HiSilicon Technologies Co., Ltd. i HiKey970 Kernel Development Guide Contents Contents Change History ..................................................................................................................................i Contents ............................................................................................................................................ ii 1 Compiling the image .................................................................................................................... 1 1.1 Download the code of Hikey970 on GitHub .................................................................................................... 1 1.2 Prepare tools and files ...................................................................................................................................... 1 1.2.1 Create a tools folder ................................................................................................................................ 1 1.2.2 Copy ramdisk.img and mkbootimg to the tools Directory ...................................................................... 1 1.2.3 Modify the compilation script ................................................................................................................. 1 1.3 Compile ............................................................................................................................................................ 2 1.3.1 Run build_kernel.sh ................................................................................................................................ 2 2 Loading the image ......................................................................................................................... 3 2.1 Entering the FastBoot mode ............................................................................................................................. 3 2.2 Load the boot image ......................................................................................................................................... 3 Issue 01 (2018-03-11) HiSilicon Proprietary and Confidential Copyright © HiSilicon Technologies Co., Ltd. ii HiKey970 Kernel Development Guide 1 Compiling the image 1 Compiling the image 1.1 Download the code of Hikey970 on GitHub Git command: git clone https://github.com/96boards-hikey/linux.git Note: after the code is downloaded, switch to the hikey970 branch (Branch Name: origin/hikey970-v4.9). 1.2 Prepare tools and files 1.2.1 Create a tools folder Create a “tools” folder in the same level directory of the “linux” directory. ./linux/arch ./linux/mm ./linux/kernel … ./tools/ 1.2.2 Copy ramdisk.img and mkbootimg to the tools Directory Copy the compiled ramdisk.img and mkbootimg into the tools directory. 1.2.3 Modify the compilation script Move the build_kernel.sh compilation script to the tools folder; Edit the compile script CROSS_COMPILE parameters to specify the compiler tool according to your own compilation environment, For example: export CROSS_COMPILE=/home/xxxxxx/hikey970/prebuilts/gcc/linux-x86/aarch64/aarch64-linuxandroid-4.9/bin/aarch64-linux-android- Issue 01 (2018-03-11) HiSilicon Proprietary and Confidential Copyright © HiSilicon Technologies Co., Ltd. 1 HiKey970 Kernel Development Guide 1 Compiling the image 1.3 Compile 1.3.1 Run build_kernel.sh Execute "./build_kernel.sh" in the tools directory to compile the image. After the compilation is completed, the boot.img can be generated under “out/target/product/hikey970”. Issue 01 (2018-03-11) HiSilicon Proprietary and Confidential Copyright © HiSilicon Technologies Co., Ltd. 2 HiKey970 Kernel Development Guide 2 Loading the image 2 Loading the image 2.1 Entering the FastBoot mode Input in ADB mode: adb reboot bootloader or dial the back of the code switch 3 (EXT_BOOT) to ON, and press the RESET key to restart. 2.2 Load the boot image Input in Fastboot mode: fastboot flash boot + "boot image path" starts to load the image, and then input “fastboot reboot” to normal start. Issue 01 (2018-03-11) HiSilicon Proprietary and Confidential Copyright © HiSilicon Technologies Co., Ltd. 3
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