I have use the manual process.

1- I have write the minimal image on the sdcard with :

    $> xzcat Fedora-Minimal-armhfp-21-5-sda.raw.xz | sudo dd of=$MEDIA; sync

2- I have write the uboot.imx file from the /usr/share/uboot/wandboard_quad/ of the just writed sdcard with :
    $> sudo dd if=path/u-boot.imx of=/dev/mymdia bs=1k seek=1 conv=fsync; sync

I think I have tried 2 times, but if other people have tested with succeed, I whould have to test again.

But it's probably me who made a mistake.

Sorry :)

XoD

PS: If it can change something, I have a wandboard quad "rev C1".

2015-03-30 13:31 GMT+02:00 Peter Robinson <pbrobinson@gmail.com>:
On Sun, Mar 29, 2015 at 9:23 PM, XoD <xoddark@gmail.com> wrote:
> Hello,
>
> Today I have installed a Fedora 21 on an sdcard for my Wandboard Quad.
>
> But I had problem with u-boot.
> I have follow the doc on fedora wiki
> :http://fedoraproject.org/wiki/Architectures/ARM/F21/Installation
> But after setting up the sdcard, the board don't want to start.
> I didn't have output on serial output with the u-boot.imx from the fedora
> minimal archive.
>
> After build u-boot from the head of u-boot-imx repository (and apply this
> patch :https://www.mail-archive.com/u-boot@lists.denx.de/msg167764.html), I
> was able to boot a fedora 21 minimal system.
>
> It's a know problem ? Someone else have the problem ?

We already ship an equivalent patch of the one you reference above, a
number of people regularly use and have tested the wandboard quad on
Fedora 21 and 22 etc. You don't mention whether you use the automated
scripted install using fedora-arm-installer or a manual process.

Peter