Just got a ‘BananaPro‘ ARMv7 board, and updated it to Kernel 4.4-rc4 (from kernel.org) and Fedora 23.

More details are here:  http://linux-sunxi.org/LeMaker_Banana_Pro

I compiled U-Boot from the latest (2015.10) released version, from ftp.denx.de/pub/u-boot/ :

# cd u-boot
# make Bananapro_defconfig
# make ARCH=arm CROSS_COMPILE=arm-linux-gnu-  (or whatever cross-compiler you are using)

Then as root, copy to the SDCard (mounted via USB..)

# dd if=u-boot-sunxi-with-spl.bin of=/dev/sde bs=1024 seek=8

I used one of the standard Fedora 23 images (Workstation), from https://arm.fedoraproject.org/

The initial kernel (cross-)compile was done on an x86_64 system, and copied to the F23 SDCard.   Further compiles will be done on the BananaPro itself, as follows:

make sunxi_defconfig
make xconfig (select Allwinner A20 - sunx7i)
make -j3 zImage
make dtbs
make -j3 modules
make modules_install
make firmware_install
cp arch/arm/boot/zImage /boot/uboot
cp arch/arm/boot/dts/sun7i-a20-bananapro.dtb /boot/uboot

Note that many BananaPro examples show uImage, but zImage works fine….  To avoid anything being overwritten by Fedora updates, I created a /boot/uboot directory for the compiled kernel image and dtb..    I modified the kernel config selections as necessary for Fedora (EXT4 POSIX, etc., and devtmpfs, and Tmpfs POSIX, etc..)

I modified the U-Boot parameters as follows:

setenv bootdelay 10
setenv bootargs "console=ttyS0,115200 console=tty0 console=tty1 root=/dev/mmcblk0p3 rootfstype=ext4 elevator=deadline rootwait"
setenv bootcmd "ext4load mmc 0:1 0x46000000 uboot/zImage; ext4load mmc 0:1 0x49000000 uboot/sun7i-a20-bananapro.dtb; bootz 0x46000000 - 0x49000000"
< then saveenv to save to mmc >

Then the system booted OK:

Fedora 23 (Twenty Three)
Kernel 4.4.0-rc4 on an armv7l (ttyS0)
.................
]# uname -a
Linux rgpro 4.4.0-rc4 #4 SMP Thu Dec 10 15:35:50 PST 2015 armv7l armv7l armv7l GNU/Linux

Robert Gadsdon.  December 13, 2015.