Porting Guide

Overview

To rapidly support a wide range of devices, our architecture reuses some of the drivers and hardware enablement available for Android.

As a consequence, at the current images you'll find some of the Android services running at the device next to the webOS services.

For quick reference, these are the current components used from Android:

• Linux Kernel (stock Android kernel provided by the vendor, with a few changes to support some extra features needed by Ubuntu)
• OpenGL ES2.0 HAL and drivers
• Audio/Media HAL and services, to re-use the hardware video decoders
• RILD for modem support

Other than the very basic services (needed to re-use the binary blobs already available), the rest is just pure webOS goodness

Kernel configuration

We need the following kernel options:

• CONFIG_ANDROID=y
• CONFIG_ANDROID_BINDER_IPC=y
• CONFIG_ANDROID_LOGGER=y

• CONFIG_ANDROID_PARANOID_NETWORK=n
• CONFIG_HAS_WAKELOCK=n
• CONFIG_HAS_EARLYSUSPEND=n
• CONFIG_WAKELOCK=n
• CONFIG_WAKELOCK_STAT=n
• CONFIG_USER_WAKELOCK=n

• CONFIG_SYSVIPC=y
• CONFIG_DEVTMPFS=y
• CONFIG_DEVPTS_MULTIPLE_INSTANCES=y
• CONFIG_FSNOTIFY=y
• CONFIG_DNOTIFY=y
• CONFIG_INOTIFY_USER=y
• CONFIG_FANOTIFY=y
• CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y
• CONFIG_SWAP=y