Thanks Pavel,
That's the uboot I had been using. I followed your lead yesterday and started with that uboot as my baseline and added all the necessary patches (Except pcie...I don't need that in my final product). The problem of hanging did go away.
Thanks for checking on the memory map configuration...I think you're right about that.
I really appreciate the help! Let me know what you find out from the PSP folks...that will be very helpful. I'm going to look into how the new uboot got thru the Loading Kernel Image and Checksum so quickly...
Dave