Dear Sony developer,
thank you very much for contributing it to open-source community.
I applied a patch to let boot.img to use the old format and the "Reintroduce eglGetRenderBufferANDROID" patch. Then I got it booting AOSP 4.2.1 correctly.
Unfortunately GSM/3G is not working on Android 4.2.1, I think this is the guilt:
"W/InterfaceController( 119): Warning (Cannot load library: load_library(linker.cpp:745): library "/system/lib/libnetcmdiface.so" not found) while opening the net interface command library"
Then I copied libnetcmdiface.so to /system/lib, but then the error changed to:
"W/InterfaceController( 119): Error (Symbol not found: ) while searching for the interface command fini function"
I'm investigating why libnetcmdiface.so is not copied automatically.
Please help me to fix this issue, I'm looking forward to get a functional AOSP working on my Xperia S.