The LS2088ARDB was booting from bank0 (SW9 - off off off).
The following command sequence was used:
1.
tftp 0xa0000000 firmware_ls2088ardb_uboot_norboot.img
2.
erase 0x584000000 +0x2f00000
3.
cp.b 0xa0000000 0x584000000 0x2f00000
4.
qixis_reset altbank
There is correct booting of the LS2088ARDB board.
Have a great day,
Pavel Chubakov