First series of my "Learning AOSP" workshop for Android Sydney Australia. The presentation talk about how to build AOSP for Nexus 7 (1st generation) - WiFi version

1. Building AOSP for NexusBuilding AOSP for Nexus
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Nanik TolaramNanik Tolaram
@nanikjava@nanikjava

2. Thank You !Thank You !

3. WARNING !WARNING !
 Voiding warrantyVoiding warranty
 Bricked deviceBricked device
 No support (DIY support)No support (DIY support)

4. Who Am I ?Who Am I ?
 Enterprise Java DeveloperEnterprise Java Developer
 Android Framework & Kernel tinkererAndroid Framework & Kernel tinkerer
 Creating electronics gadgetsCreating electronics gadgets
 ozandroid.info & kernel.ozandroid.infoozandroid.info & kernel.ozandroid.info

5. What you need ?What you need ?
 Android DeviceAndroid Device
 64-bit Linux based distro64-bit Linux based distro
 Fast Computer (16/32GB RAM, MultiFast Computer (16/32GB RAM, Multi
Core processor, Fast hard drive)Core processor, Fast hard drive)
 Patience !!!Patience !!!

6. Why Nexus 7 ?Why Nexus 7 ?
 Source code (kernel) & binaries availableSource code (kernel) & binaries available
 Code name – Grouper (WiFi) / NakashiCode name – Grouper (WiFi) / Nakashi
(3G)(3G)
 BIG community supportBIG community support

7. ArchitectureArchitecture

8. PartitionPartition
 Recovery – recovery.imgRecovery – recovery.img
 ““saviour” partitionsaviour” partition
 Boot – boot.imgBoot – boot.img
 Main partition for bottingMain partition for botting
 System – system.imgSystem – system.img
 Android framework & apps partitionAndroid framework & apps partition
 Data – data.imgData – data.img
 Application data storage partitionApplication data storage partition

9. BootingBooting
Bootloader Microcode
Boot Partition
System Partition
Recovery ?
Recovery Partition
N
Y

10. Building ProcessBuilding Process
1.1. Checkout AOSPCheckout AOSP
2.2. Checkout Linux KernelCheckout Linux Kernel
3.3. Download Device DriversDownload Device Drivers
4.4. Extract & Device DriversExtract & Device Drivers
5.5. Change ConfigurationChange Configuration
6.6. BuildBuild

11. Source CodeSource Code
http://elinux.org/Android_Source_Code_Description

12. Building – Code &Building – Code &
DriversDrivers
 Android Source CodeAndroid Source Code
 Checkout Code - source.android.com/source/downloading.htmlCheckout Code - source.android.com/source/downloading.html
 Branch – masterBranch – master
 Nexus 7 DriversNexus 7 Drivers
 developers.google.com/android/nexus/drivers/#grouperdevelopers.google.com/android/nexus/drivers/#grouper
 Extract and Copy to <aosp>/vendorExtract and Copy to <aosp>/vendor

13. Building –Building –
ConfigurationConfiguration
 Linux Kernel & ConfigurationLinux Kernel & Configuration
 Linux Code - android.googlesource.com/kernel/tegra/Linux Code - android.googlesource.com/kernel/tegra/
 Linux Config Info - source.android.com/source/building-kernels.htmlLinux Config Info - source.android.com/source/building-kernels.html
 tegra3_android_defconfig - config for Nexus 7tegra3_android_defconfig - config for Nexus 7
 Build ConfigurationBuild Configuration
 /build/core/tasks/kernel.mk (from Cyanogenmod)/build/core/tasks/kernel.mk (from Cyanogenmod)
 Linux Directory ConfigurationLinux Directory Configuration
 /device/asus/grouper/BoardConfigCommon.mk/device/asus/grouper/BoardConfigCommon.mk
 /device/asus/grouper/BoardConfig.mk/device/asus/grouper/BoardConfig.mk

14. DemoDemo
 Starting build processStarting build process
 /out folder/out folder
 Flashing (fastboot)Flashing (fastboot)