Hi Community,
I solved this issue by my self.
When I get above error, I only see "flash" and "SA" folder at <CW4NET_version>\CW_ARMv8\Config.
I copied other configuration data(SoCs, and boards folder) from other PC. then, I can read SPD information from DIMM correctly.
So, I suppose my installation process anythings wrong. I should re-install CodeWarrior to solve this issue. thanks.
Best Regards,
Kazuma Sasaki.