Sorry, I tried to search the archives, but they were down. As it was posted on the U-Boot website that the archives are frequently down, I wasn't sure when they'd be back up, so I posted to the list.
Your toolchain used hardware FP unconditionally, whereas u-boot uses software FP.
Fix your toolchain.
Or remove the (unneccessary) "-msoftfloat" from your "cpu/<cpu>/config.mk" file. Works for me and is much easier than "fixing" the toolchain.
My "buildroot" at ftp://at91dist:distrib@81.80.104.162/ -> AT91 third party -> Linux-host -> Source will do what you want.
Download buildroot 2007-04-20 create /tftpboot and /usr/local/arm and make sure you can write to them as an ordinary user.
$ make B=at91sam9260dfc board $ make
This will generate everything you need for running the AT91SAM9260EK from a dataflashcard (I.E SPI0.CS0). You will have to fix a few things if you want to run from a SPI0.CS1.
My U-boot 1.2.0 version does not detect NAND flash properly.
Best Regards Ulf Samuelsson