Binder for Trusty

This is the Trusty port of the libbinder library. To build it, take the following steps:

• Check out copies of the Trusty and AOSP repositories.
• Apply the patches from the trusty_binder topic on both repositories.
• Build Trusty normally using build.py.
• Run the sample AIDL test for Trusty:

  $ ./build-root/.../run --headless --boot-test com.android.trusty.aidl.test
  

To run the Android-Trusty IPC test, do the following:

• Build AOSP for the qemu_trusty_arm64-userdebug target:

  $ lunch qemu_trusty_arm64-userdebug
  $ m
  

• In the Trusty directory, run the emulator with the newly built Android:

  $ ./build-root/.../run --android /path/to/aosp
  

• Using either adb or the shell inside the emulator itself, run the Trusty Binder test as root:

  # /data/nativetest64/vendor/trusty_binder_test/trusty_binder_test
  

Running the AIDL compiler

For now, you will need to run the AIDL compiler manually to generate the C++ source code for Trusty clients and services. The general syntax is:

$ aidl --lang=cpp -o <output directory> -h <output header directory> <AIDL files...>

The compiler will emit some .cpp files in the output directory and their corresponding .h files in the header directory.