Sometimes need read and modify registers for debug, once ICE connect board , use the memory window do this work.
For i.MX 53 , if use RealView 3.1 dump UART/SSI registers , you will get nothing. So in this case, the CEXPRESSTION and SETMEM command can help you:
CEXPRESSTION used for dump , cexpression ((unsigned long *)S:0x50014010)
SETMEM used for write, SETMEM 0x50014010 =0x98
Also you can upload/download memory to file, note the start address and length should set properly , or will get error.
For command syntax , you can reference it :