01-步骤整理-华为海思Hikey970开发板的AOSP编译烧写

    最近结合第三方厂家与官方提供的编译文档，实践整理了Hikey970单板编译与烧写Google原生AOSP（Android Open Source Project）系统的步骤。

    单板参数：6GB LPDDR4

                     64GB UFS

    具体流程如下。

一、Bootloader

1、sudo apt-get install uuid-dev build-essential
2、mkdir bootloader
   cd bootloader
3、git clone https://github.com/96boards-hikey/tools-images-hikey970.git
   git clone https://github.com/96boards-hikey/OpenPlatformPkg.git -b hikey970_v1.0
   git clone https://github.com/96boards-hikey/arm-trusted-firmware.git -b hikey970_v1.0
   git clone https://github.com/96boards-hikey/l-loader.git -b hikey970_v1.0
   git clone https://github.com/96boards-hikey/edk2.git -b hikey970_v1.0
   git clone https://github.com/96boards-hikey/uefi-tools.git -b hikey970_v1.0
4、cd edk2
   ln -sf ../OpenPlatformPkg
5、vim ${BUILD_PATH}/l-loader/build_uefi.sh
   具体改动见下图
6、 编译 l-loader/build_uefi.sh hikey970

二、Kernel

1、mkdir kernel
   cd kernel
2、git clone https://github.com/96boards-hikey/linux.git -b hikey970-v4.9
3、设置环境变量
export ARCH=arm64
export CROSS_COMPILE=/xxx/aarch64-linux-android-4.9/bin/aarch64-linux-android-
（编译链下载：git clone https://android.googlesource.com/platform/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9）
4、make hikey970_defconfig
   make -j4
   make hisilicon/kirin970-hikey970.dtb

三、AOSP

1、mkdir aosp
   cd aosp
2、1）墙外用户：repo init -u https://android.googlesource.com/platform/manifest -b master
   2）墙内用户：repo init -u git://mirrors.ustc.edu.cn/aosp/platform/manifest -b master （建议先离线下载压缩包，而后到Linux环境下解压）
3、git clone https://github.com/96boards-hikey/android-manifest.git -b hikey970_v1.0 .repo/local_manifests
4、sudo repo sync （最终大约100+G）
5、编译
   Copy kirin970-hikey970.dtb (arch/arm64/boot/dts/hisilicon/ kirin970-hikey970.dtb) to the device/linaro/hikey-kernel directory as file: kirin970-hikey970.dtb-4.9
   Copy the Image file (arch/arm64/boot/Image.gz-dtb) to the device/linaro/hikey-kernel directory as file: Image.gz-hikey970-4.9
   source ./build/envsetup.sh
   lunch hikey970-userdebug
   make -j16

生成 boot.img：

1、Copy Image and kirin970-hikey970.dtb from kernel directory
2、copy ramdisk.img from android out/
3、cat Image kirin970-hikey970.dtb > Image-dtb
   mkbootimg --kernel Image-dtb --ramdisk ramdisk.img --cmdline "androidboot.hardware=hikey970 firmware_class.path=/system/etc/firmware loglevel=15 buildvariant=userdebug androidboot.selinux=permissive clk_ignore_unused=true initrd=0xBE19D000,0x16677F earlycon=pl011,0xfff32000,115200 console=ttyAMA6 androidboot.serialno=54DA9CD5022525E4 clk_ignore_unused=true" -o boot.img

四、烧写

1、将单板上的拨码开关拨到1、3 ON，2、4 OFF，即fastboot mode everytime模式

2、用Type-C线将单板上非串口调试的Type-C口与电脑USB口相连

3、在Windows CMD中使用fastboot工具烧写各镜像文件

fastboot flash ptable l-loader/ptable-aosp-64g.img
fastboot flash xloader tools-images-hikey970/sec_xloader.img
fastboot flash fastboot l-loader/l-loader.bin
fastboot flash fip l-loader/fip.bin
fastboot flash boot boot.img
fastboot flash cache cache.img
fastboot flash system system.img
fastboot flash userdata userdata.img