User guide

7.2 System control coprocessor

CP15 is the system control coprocessor. You must write to registers in CP15 to configure your core, and any caches

or TCM.

The registers in CP15 can only be accessed using the MCR and MRC instructions (for details of these instructions

see the ARM Instructions chapter in Assembler Guide

For details of the registers in CP15, see ARM Architecture Reference Manual

, and the Technical Reference Manual

for your processor.

Note

If your system has an MMU, you must also write pagetables to memory before enabling the MMU (see Configuring

an MMU).

Caches and Tightly Coupled Memories