The ARM920T coprocessor 15 (CP15), register 15 (c15) is used to provide additional device-specific test operations. You can use it to access and control the following:
You must only use these operations for test. The ARM Architecture Reference Manual describes this register as implementation defined.
The format of the CP15 test operations is:
The L bit distinguishes between an
= 1) and an
MRC (L = 0).