DBGAUTHSTATUS

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

Field descriptions

Bits [31:28]

RTNID, bits [27:26]

Root non-invasive debug.

This field has the same value as DBGAUTHSTATUS_EL1.RTID.

This field has an IMPLEMENTATION DEFINED value.

Access to this field is RO.

RTID, bits [25:24]

Root invasive debug.

RTID	Meaning
0b00	Not implemented.
0b10	Implemented and disabled. ExternalRootInvasiveDebugEnabled() == FALSE.
0b11	Implemented and enabled. ExternalRootInvasiveDebugEnabled() == TRUE.

RTID

Meaning

0b00

Not implemented.

0b10

Implemented and disabled.

ExternalRootInvasiveDebugEnabled() == FALSE.

0b11

Implemented and enabled.

ExternalRootInvasiveDebugEnabled() == TRUE.

All other values are reserved.

If FEAT_RME is not implemented, the only permitted value is 0b00.

Bits [23:16]

RLNID, bits [15:14]

Realm non-invasive debug.

This field has the same value as DBGAUTHSTATUS_EL1.RLID.

This field has an IMPLEMENTATION DEFINED value.

Access to this field is RO.

RLID, bits [13:12]

Realm invasive debug.

RLID	Meaning
0b00	Not implemented.
0b10	Implemented and disabled. ExternalRealmInvasiveDebugEnabled() == FALSE.
0b11	Implemented and enabled. ExternalRealmInvasiveDebugEnabled() == TRUE.

RLID

Meaning

0b00

Not implemented.

0b10

Implemented and disabled.

ExternalRealmInvasiveDebugEnabled() == FALSE.

0b11

Implemented and enabled.

ExternalRealmInvasiveDebugEnabled() == TRUE.

All other values are reserved.

If FEAT_RME is not implemented, the only permitted value is 0b00.

Bits [11:8]

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

Secure non-invasive debug.

This field has the same value as DBGAUTHSTATUS_EL1.SID.

This field has an IMPLEMENTATION DEFINED value.

Access to this field is RO.

Otherwise:

Secure non-invasive debug.

The value of this field is an IMPLEMENTATION DEFINED choice of:

SNID	Meaning
0b00	Secure state is not implemented.
0b10	Implemented and disabled. ExternalSecureNoninvasiveDebugEnabled() == FALSE.
0b11	Implemented and enabled. ExternalSecureNoninvasiveDebugEnabled() == TRUE.

All other values are reserved.

Access to this field is RO.

SID, bits [5:4]

Secure invasive debug.

The value of this field is an IMPLEMENTATION DEFINED choice of:

SID	Meaning
0b00	Secure state is not implemented.
0b10	Implemented and disabled. ExternalSecureInvasiveDebugEnabled() == FALSE.
0b11	Implemented and enabled. ExternalSecureInvasiveDebugEnabled() == TRUE.

All other values are reserved.

Access to this field is RO.

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

Non-secure non-invasive debug.

The value of this field is an IMPLEMENTATION DEFINED choice of:

NSNID	Meaning
0b00	Non-secure state is not implemented.
0b11	Implemented and enabled. ExternalNoninvasiveDebugEnabled() == TRUE.

If the Effective value of SCR_EL3.NS is 1, or if EL3 is implemented and EL2 is not implemented, this field reads as 0b11.

All other values are reserved.

Access to this field is RO.

Otherwise:

Non-secure non-invasive debug.

The value of this field is an IMPLEMENTATION DEFINED choice of:

NSNID	Meaning
0b00	Non-secure state is not implemented.
0b10	Implemented and disabled. ExternalNoninvasiveDebugEnabled() == FALSE.
0b11	Implemented and enabled. ExternalNoninvasiveDebugEnabled() == TRUE.

All other values are reserved.

Access to this field is RO.

NSID, bits [1:0]

Non-secure invasive debug.

The value of this field is an IMPLEMENTATION DEFINED choice of:

NSID	Meaning
0b00	Non-secure state is not implemented.
0b10	Implemented and disabled. ExternalInvasiveDebugEnabled() == FALSE.
0b11	Implemented and enabled. ExternalInvasiveDebugEnabled() == TRUE.

All other values are reserved.

Access to this field is RO.

Accessing DBGAUTHSTATUS_EL1

DBGAUTHSTATUS_EL1 can be accessed through the external debug interface:

DBGAUTHSTATUS_EL1, Debug Authentication Status Register

Purpose

Configuration

Attributes

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:

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
RES0				RTNID		RTID		RES0								RLNID		RLID		RES0				SNID		SID		NSNID		NSID

DBGAUTHSTATUS_EL1, Debug Authentication Status Register

Purpose

Configuration

Attributes

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:

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

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