Quick question?

[jchludzinski]

I'm trying to bring up an RTOS (vxworks) using u-boot and have had some 
"partial" success:

If I use the 2014 u-boot that comes with Quartus 18.1 (a tarball in the 
download), vxworks successfully boots.

If I clone the github repo 
(https://github.com/altera-opensource/u-boot-socfpga.git)  and build 
u-boot from that (2020), vxworks fails to boot. What appears to be 
happening is an (fpga?) watchdog timer goes off and a HW reset is 
called. Then of course, u-boot reboots.

Any thoughts? Why would this occur with the newer u-boot and not with 
the older u-boot?

---John