Hey everyone!
I've had some questions about what "TINY_ANDROID" is (and isn't).
I put together this Wiki to answer any questions and make some recommendations for its use.
https://wiki.linaro.org/Platform/Android/UseTinyAndroid
Basically this build can be built from source in about 20 min (kernel included) and support most of the low level userspace tools we need to work with. It should be ideal for 64-bit native Android porting.