I have verified the procedure listed in AN12081 , there is no problem. After loading images in CodeWarrior IDE, the data will turn read.
Please refer to pages starting from 31 to configure your CodeWarrior project.
In addition, do you use CodeWarrior for ARMv8 11.5.12?
If your problem persists, would you please send your whole CodeWarrior workspace to me to do more investigation?