By default, the Integrator/CP operates as a little-endian system. To change to big-endian operation, write to the appropriate register in CP15 on the ARM core.

There is a delay between changing the endian configuration of the core and the system functioning in the new endian mode. Changing endianess should only be done at the start of a debugging session. The change must have taken effect before you can perform any subword accesses.