There is already a howto on how to install Arch on a Orange Pi One.
The only difference for me was to compile it with another OrangePi defconfig and toolchain with hardware float (apt-get install gcc-arm-linux-gnueabihf).
You can find the appropriate defconf for your OrangePi here.
The config for u-boot looks like:

make -j4 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- orangepi_plus2e_defconfig
make -j4 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-

The only thing that didn’t work was the wifi adapter. I found an aur repository for the kernel module. It uses the same git repo as this howto.

After the restart the right kernel module was loaded and wifi worked, yeeeehaaaa
More information about the OrangePi Plus 2E.