https://github.com/pdsouza/android-generate-vendor

Scripts to extract device vendor files and generate AOSP makefiles.
https://github.com/pdsouza/android-generate-vendor

android aosp hammerhead

Last synced: about 16 hours ago
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Scripts to extract device vendor files and generate AOSP makefiles.

• Host: GitHub
• URL: https://github.com/pdsouza/android-generate-vendor
• Owner: pdsouza
• License: other
• Created: 2017-02-11T00:26:01.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2021-07-18T11:36:41.000Z (over 3 years ago)
• Last Synced: 2023-03-13T12:04:07.862Z (over 1 year ago)
• Topics: android, aosp, hammerhead
• Language: Shell
• Size: 1.93 MB
• Stars: 19
• Watchers: 2
• Forks: 8
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# android-generate-vendor

Scripts to extract vendor files from a factory image and generate vendor

makefiles for AOSP.

## Why?

Building custom Android ROMs for a device is harder than it appears. Although Android

is open-source under the Android Open Source Project (AOSP), devices ship dozens of

closed-source binaries ("blobs") that are needed to fully enable all device hardware.

Obtaining these blobs can be...painful.

Even with friendly devices like the Nexus line that distribute these binaries, there

are cases of missing blobs, requiring ROM builders to manually extract these from factory

images. The Nexus 5 (hammerhead), for example, is missing at least two APKs and three shared

libraries in the distributed vendor binaries.

These scripts aim to make the process of extracting vendor files and including them in AOSP

builds simple and scalable.

## Caveats

Right now, we only handle devices that ship all blobs in `/system`. Devices that

use a separate vendor partition are unsupported right now; please see the excellent

[android-prepare-vendor](https://github.com/anestisb/android-prepare-vendor) to deal

with vendor partitions for the latest Nexus devices.

## Supported Devices

* [Nexus 5 (hammerhead)](lge/hammerhead/proprietary-blobs.txt)

* [Nexus 7 2013 Wi-Fi (flo)](asus/flo/proprietary-blobs.txt)

## Dependencies

* [android-simg2img](https://github.com/anestisb/android-simg2img)

* [smali](https://github.com/JesusFreke/smali)

These are included under [deps](deps) for your convenience.

## Examples

Generating a vendor tree for hammerhead build M4B30Z:

```

$ ./generate-vendor.sh -d hammerhead -i hammerhead-m4b30z-factory-625c027b.zip

I: setting up output dir './vendor/lge/hammerhead'...

I: preparing factory image...

W:   requesting sudo for loop mount...

I: generating vendor makefiles...

I: extracting vendor files from image...

I:   de-optimizing system/app/qcrilmsgtunnel/qcrilmsgtunnel.apk...

I:   de-optimizing system/app/shutdownlistener/shutdownlistener.apk...

I:   de-optimizing system/app/TimeService/TimeService.apk...

I:   de-optimizing system/framework/qcrilhook.jar...

I: calculating checksums...

I: all tasks completed successfully

I: cleaning up...

```

...you will end up with a clean vendor tree for your device:

```

$ tree -L 2 vendor/lge/hammerhead

vendor/lge/hammerhead

|-- Android.mk

|-- device-partial.mk

|-- device-vendor.mk

|-- sha1sums.txt

`-- system

    |-- app

    |-- bin

    |-- etc

    |-- framework

    |-- lib

    `-- vendor

7 directories, 4 files

```

Just copy the vendor directory to your AOSP workspace and you're good to go!

## License

[Apache 2.0](LICENSE)