Hi,
Great seems I found a post describing very closely issue I've here too.
I've similar issue with a LS1012ARDB board ... but a bit different.
Using latest LSDK 19.09 and also able to build firmware_ls1012ardb_uboot_qspiboot.img I can flash and use.
During build I did not brought any changes to code or used some special build options.
A performed a simple "flex-builder -m ls1012ardb -b qspi" and then flashed the resulting "image firmware_ls1012ardb_uboot_qspiboot.img" as described in "LS1012ARDBGSG Getting Started Guide Rev. 5, 09/2018", §14.4 Step 2: Flashing LSDK composite firmware image. All went well so far.
NOTE: I flash it on bank 2 and not bank 1 of embedded QSPI flash device - maybe this is my problem and I shall put it on bank 1?
I also set the variables in u-boot prompt exactly as described above, but this does not help in my case.
Problem I've is I simply don't see and cannot mount the eth0 device despite in u-boot phase it seems to be up and running already. So I can boot and log into tiny Linux as root and there, in order to flash boot partition and userland I need first to bring up eth0 by doing " ifconfig eth0 hw ether <MyMAC address>". Doing that simply tells me there is no such device, I only can see "lo" and "sit0@NONE" devices, ping localhost works making me believe stack is up and alive. Looking into /etc/network/interfaces indeed shows eth0 is absent - what went wrong?
Any idea? Thx Christophe