[U-Boot] UBI and UBIFS on ARM64

[Adam Oleksy]

Dear U-Boot community,
I'm developing software for Xilinx ZynqMP platform, which is made in
64-bit architecture. I would like to store every artifact needed to
boot up on the UBIFS partition. I faced problem, that u-boot does not
want to compile with enabled UBI/UBIFS support, due to lack of some
atomic operations on longs. So, I've written them (see
http://pastebin.com/ibp0Zt99). Please note, that I've written only
that functions, which are needed by UBI/UBIFS. Then UBIFS started work
on the target. Almost... because I've found that large files (~20MiB)
can't be read. I've enabled debug messages, but I don't know how to
interpret them (please see http://pastebin.com/gByDcdvw). Maybe you
are able to help me?
I've also checked how the UBIFS behaves in the Linux, and the result
is that everything works as expected. It means that I can write large
files to UBIFS, and read them back successfully.
Should you need any further information, please do not hesitate to contact me.

.....................
 Best Regards,
 Adam Oleksy