My system will not boot from NAND.
I can access NAND correctly when booting from a different source and I can verify the data is correct.
REBOOT_STATUS returns the following:
Ensure that there is a pull-up on the NAND BUSY signal.
The internal pull-up in Zynq is disabled in the BootROM (refer to TRM table 6-11).
This pull-up is enabled in the FSBL (or ps7_init.tcl) and that is why u-boot works correctly.