i've asked on the meta-xilinx mailing list, and rummaged around the net, and have failed to do something that should be straightforward -- i want to simply boot an avnet zedboard to a recent u-boot and stop there; i have no need to go any further for the time being.
i have no problem configuring and building u-boot using:
$ make zynq_zed_defconfig
and as a test, i've tried to download any pre-built SD card images/files just to verify that the board boots, with absolutely no luck. i've formatted and re-formatted SD cards, populated them with allegedly working image files, checked and rechecked jumper settings to boot from SD card, used minicom and picocom to connect to the UART port ... all i ever see is the power LED come on, and never anything else.
if someone can point me at a recipe that is verified to work to get u-boot up and running on this zedboard, i would be eternally grateful, because i'm running out of ideas.
rday