Now I am using bootrom.bin + vxworks.st.
And the wdb is initialized in the bootConfig.c and the usrConfig.c
twice.
The first time the wdb is initialized is in usrRoot () bootConfig.c
before the vxworks.st is loaded. And the VIO is opened.
initialization: wdbConfig ();
open: consoleFd = open ("/vio/0", O_RDWR, 0); /* for Target
Server Console */

But the second initialization in the usrConfig.c after the vxworks.st
is download is as follows:
initialization: wdbConfig();
But there is no open function.?
How the vxWorks image downloaded using wdb since there is no console
opened for wdb?

Thanks.