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DBGAUTHSTATUS_EL1, Debug Authentication Status Register

The DBGAUTHSTATUS_EL1 characteristics are:

Purpose

Provides information about the state of the IMPLEMENTATION DEFINED authentication interface for debug.

Configuration

External register DBGAUTHSTATUS_EL1 bits [31:0] are architecturally mapped to AArch64 System register DBGAUTHSTATUS_EL1[31:0].

External register DBGAUTHSTATUS_EL1 bits [31:0] are architecturally mapped to AArch32 System register DBGAUTHSTATUS[31:0].

When FEAT_DoPD is implemented, DBGAUTHSTATUS_EL1 is in the Core power domain. Otherwise, DBGAUTHSTATUS_EL1 is in the Debug power domain.

Attributes

DBGAUTHSTATUS_EL1 is a 32-bit register.

Field descriptions

Bits [31:28]

RTNID, bits [27:26]

RTID, bits [25:24]

Bits [23:16]

RLNID, bits [15:14]

RLID, bits [13:12]

Bits [11:8]

SNID, bits [7:6]
When FEAT_Debugv8p4 is implemented:

Otherwise:

SID, bits [5:4]

NSNID, bits [3:2]
When FEAT_Debugv8p4 is implemented:

Otherwise:

NSID, bits [1:0]

Accessing DBGAUTHSTATUS_EL1

DBGAUTHSTATUS_EL1 can be accessed through the external debug interface:

Accessible as follows:

• When FEAT_DoPD is implemented and !IsCorePowered(), accesses to this register generate an error response.
• Otherwise, accesses to this register are RO.

2026-03-12 12:23:09, 2025-09_rel_asl1

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