You can enable serial driver in discovery boards with integrated jtag.
1) Download FT_Prog from FTDI site
2) Change ftdi chip serial number to 1626 (see serial.png)
3) remove, insert USB cabe. "PLS USB Serial port" will be listed in device manager
4) For SPC570S-Disp board place jumper between TX &TXD (JP4), RX & RXD (JP1)