首先介绍下背景知识。
aosp 仅是一套源码，不含厂家驱动。 CM安卓的厂家驱动是自行提取的。
一般的安卓手机分区，有 boot , system, user , 基带, recovery , cache 等。
Google Pixel XL 都需要哪些 驱动呢？
1, 厂家驱动二进制。
https://developers.google.com/android/drivers#marlinppr2.180905.006.a1
This page contains binary hardware support files for Nexus and Pixel phones and other devices that are available for users of the Android Open-Source Project. These files are for use only on your personal devices and may not be redistributed by you or used in any way except as specifically set forth in the license terms enclosed in each individual download.
Pixel XL binaries for Android 9.0.0 (PPR2.180905.006.A1)
https://dl.google.com/dl/android/aosp/google_devices-marlin-ppr2.180905.006.a1-1090e880.tgz
2f93f49993f6ff4f2269b53ec913966236de44f07dbb41657505b0402e21d0dc
GPS, Audio, Camera, Gestures, Graphics, DRM, Video, Sensors
https://dl.google.com/dl/android/aosp/qcom-marlin-ppr2.180905.006.a1-d11de9e0.tgz
25c68bc68254c4426c280ed57499177973a69b9d843d5ca79c7fc918e6e0d1ba
出厂镜像
https://developers.google.com/android/images
https://dl.google.com/dl/android/aosp/marlin-ppr2.180905.006.a1-factory-a78fe264.zip
出厂镜像提供基础支持，厂家二进制驱动提供 hal 层的 gps 照像 基带 什么的支持。
如何添加到 aosp 中一起编译？
更新中。。。
aosp 制作 rom 刷机 添加厂家二进制驱动 及 出厂镜像
原文：https://www.cnblogs.com/ningci/p/9665256.html