I got a working version of Uae4all2 with the DispmanX management I already made for Uae4all1.
You will get best result with a Rpi set to a 50 Hz mode, in /boot/config.txt following lines do the trick (1080p 50Hz):
You need libguichan and libguichansdl, in order to install them do the following in command line:
sudo apt-get install libguichan-sdl-0.8.1-1
sudo apt-get install libguichan-0.8.1-1
Two binaries are already available: one for rpi1 (uae4all-rpi1) which can work on rpi2 too, another one for rpi2 (uae4all-rpi2) more optimized for it.
Enable CPU frequency emulation above 28 Mhz.
Resolution set by command line option is working.
Add Sony six axis workaround.
Add joystick hat support.
enable screen resolution change in guichan menu.
enable vkeybd: now Left shift is Fire button of joystick
Now two binary: one for Raspberry Pi 1 and another one for Raspberry Pi 2 (Neon enabled)
Switch to gcc 4.8 compiler instead of 4.6.
Solve the emulator stuck at exit.
Merge of latest improvement from TomB.
Add command line parameter management. Just write any wrong parameter to get the list of them :p
Git hub with source code and instruction how to compile: