4.3.4. TLB Type Register

The TLBTR characteristics are:

Purpose

Provides information about the TLB implementation.

Usage constraints

The TLBTR is:

  • A read-only register.

  • Common to the Secure and Non-secure states.

  • Only accessible from PL1 or higher.

Configurations

Available in all configurations.

Attributes

See the register summary in Table 4.3.

Figure 4.3 shows the TLBTR bit assignments.

Figure 4.3. TLBTR bit assignments

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Table 4.31 shows the TLBTR bit assignments.

Table 4.31. TLBTR bit assignments

BitsNameFunction
[31:1]-Reserved, RAZ.
[0]nU

Indicates whether the implementation has a unified TLB:

0x0

Processor has a unified TLB.


To access the TLBTR, read the CP15 register with:

MRC p15, 0, <Rt>, c0, c0, 3; Read TLB Type Register
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