ARM R4F Build Options Registers, C15, Build Options 1 Register, C15, Build Options 2 Register

System Control Coprocessor

4.2.30Build Options Registers

Build options registers reflect the build configuration options used to build the processor. They do not reflect any pin-configuration options. These registers are:

•read-only registers

•accessible in Privileged mode only.

Note

These registers are implemented from the r1pm releases of the processor. Attempting to access these registers in r0pm releases of the processor results in an Undefined Instruction exception.

c15, Build Options 1 Register

Figure 4-55shows the bit arrangement for the Build Options 1 Register.

31 12 11 0

TCM_HI_INIT_ADDR

Reserved

Figure 4-55 Build Options 1 Register format

Table 4-54shows how the bit values correspond with the Build Options 1 Register.

Table 4-54 Build Options 1 Register

Bits	Field	Function
[31:12]	TCM_HI_INIT_ADDR	Default high address for the TCM.
[11:0]	Reserved	SBZ

To access the Build Options 1 Register, write CP15 with:

MRC p15, 0, <Rd>, c15, c2, 0 ; read Build Options 1 Register

c15, Build Options 2 Register

Figure 4-56 on page 4-73shows the bit arrangement for the Build Options 2 Register.

ARM DDI 0363E	Copyright © 2009 ARM Limited. All rights reserved.	4-72
ID013010	Non-Confidential, Unrestricted Access