can't boot bananapi_m2u with non-secure mode enable

[baicaiaichibaicai]

hi,i want boot my linux kernel on my banana pi M2u board,and i build uboot like follow on my debian 8

1. export ARCH=arm
2. export CROSS_COMPILE=arm-linux-gnueabihf-
3. make Bananapi_M2_Ultra_defconfig O=out
4. cd out
5. make -j
   then i burn uboot and kernel by fel as follow
   sudo sunxi-tools/sunxi-fel uboot u-boot-sunxi-with-spl.bin write 0x43000000 uImage write 0x44000000 sun8iw11p1-sata.dtb
   and when uboot start ,i run 'bootm 43000000 - 44000000' in uboot and it say
   '

Booting kernel from Legacy Image at 43000000 ...

Image Name: Linux-3.10.65
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 3149960 Bytes = 3 MiB
Load Address: 40008000
Entry Point: 40008000
Verifying Checksum ... OK

Flattened Device Tree blob at 44000000

Booting using the fdt blob at 0x44000000
Loading Kernel Image ... OK
reserving fdt memory region: addr=78000000 size=8000000
reserving fdt memory region: addr=43000000 size=800
Loading Device Tree to 49fec000, end 49fffa92 ... OK

Starting kernel ...
'
and then nothing print,
i check uboot code and find that dev die on
u-boot-sunxi/arch/arm/lib/bootm.c -> announce_and_cleanup -> dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);

i disable non-secure support on run 'make menuconfig'
ARM architecture --->
Enable support for booting in non-secure mode
and boot linux OK, i don't know why,can't anyone talk to me?
sorry for my poor english

[wens]

Booting non-secure with mainline U-boot is only supported for mainline Linux.

If you want to use Allwinner's kernel and boot non-secure, I suggest you use their
bootloaders as well.