4.3.20. Configuration Base Address Register

The CBAR characteristics are:


Holds the physical base address of the memory-mapped interrupt controller registers.

Usage constraints

The CBAR is a read-only register.


Reset to PERIPHBASE[31:13] so that software can determine the location of the private memory region.


See the register summary in Table 4.9.

Figure 4.23 shows the CBAR bit assignments.

Figure 4.23. CBAR bit assignments

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To access the CBAR, read the CP15 register with:

MRC p15, 4, <Rd>, c15, c0, 0; Read Configuration Base Address Register
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