ARM Cortex-A53 MPCore - Page 111

System Control
ARM DDI 0500D Copyright © 2013-2014 ARM. All rights reserved. 4-50
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4.3.29 Virtualization Multiprocessor ID Register
The VMPIDR_EL2 characteristics are:
Purpose Provides the value of the Virtualization Multiprocessor ID. This is the
value returned by Non-secure EL1 reads of MPIDR.
Usage constraints This register is accessible as follows:
Configurations VMPIDR_EL2[31:0] is architecturally mapped to AArch32 register
VMPIDR. See Virtualization Multiprocessor ID Register on page 4-190.
Attributes VMPIDR_EL2 is a 64-bit register.
VMPIDR_EL2 resets to the value of MPIDR_EL2.
Figure 4-27 shows the VMPIDR_EL2 bit assignments.
Figure 4-27 VMPIDR_EL2 bit assignments
Table 4-65 shows the VMPIDR_EL2 bit assignments.
To access the VMPIDR_EL2:
MRS <Xt>, VMPIDR_EL2 ; Read VMPIDR_EL2 into Xt
MSR VMPIDR_EL2, <Xt> ; Write Xt to VMPIDR_EL2
Register access is encoded as follows:
4.3.30 System Control Register, EL1
The SCTLR_EL1 characteristics are:
Purpose Provides top level control of the system, including its memory system at
EL1.
SCTLR_EL1 is part of the Virtual memory control registers functional
group.
EL0
EL1
(NS)
EL1
(S)
EL2
EL3
(SCR.NS = 1)
EL3
(SCR.NS = 0)
---RWRW -
VMPIDR
63
0
Table 4-65 VMPIDR_EL2 bit assignments
Bits Name Function
[63:0] VMPIDR MPIDR value returned by Non-secure EL1 reads of the MPIDR_EL1. The MPIDR description defines the
subdivision of this value. See MPIDR_EL1 bit assignments on page 4-16.
Table 4-66 VMPIDR_EL2 access encoding
op0 op1 CRn CRm op2
11 100 0000 0000 101