B3.2 Active Priority Register
The GICC_APR0 characteristics are:
Purpose
Provides support for preserving and restoring state in power management applications.
Usage constraints
This register is banked to provide Secure and Non-secure copies. This ensures that Non-secure
accesses do not interfere with Secure operation.
Configurations
Available in all configurations.
Attributes
See the register summary in B3.1 CPU interface register summary on page B3-560.
The Cortex‑A35 processor implements the GICC_APR0 according to the recommendations described in
the Arm Generic Interrupt Controller Architecture Specification.
Table B3-2 Active Priority Register implementation
Number of
group
priority bits
Preemption
levels
Minimum value
of Secure
GICC_BPR
Minimum legal
value of Non-
secure
GICC_BPR
Active Priority
Registers
implemented
View of Active Priority
Registers for Non-secure
accesses
5 32 2 3 GICC_APR0 [31:0] GICC_NSAPR0 [31:16]
appears as GICC_APRo
[15:0]
B3 GIC registers
B3.2 Active Priority Register
100236_0100_00_en Copyright © 2015–2017, 2019 Arm Limited or its affiliates. All rights
reserved.
B3-561
Non-Confidential
To Next Page
Loading...
