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DBGAUTHSTATUS_EL1

Debug Authentication Status Register

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

313029282726252423222120191817161514131211109876543210
RES0RTNIDRTIDRES0RLNIDRLIDRES0SNIDSIDNSNIDNSID

Bits [31:28]:

Reserved, RES0.

RTNID, bits [27:26]:

Root non-invasive debug.

This field has the same value as DBGAUTHSTATUS_EL1.RTID.

RTID, bits [25:24]:

Root invasive debug.

RTIDMeaning
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]:

Reserved, RES0.

RLNID, bits [15:14]:

Realm non-invasive debug.

This field has the same value as DBGAUTHSTATUS_EL1.RLID.

RLID, bits [13:12]:

Realm invasive debug.

RLIDMeaning
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]:

Reserved, RES0.

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

Secure non-invasive debug.

This field has the same value as DBGAUTHSTATUS_EL1.SID.

Otherwise:

Secure non-invasive debug.

SNIDMeaning
0b00

Secure state is not implemented.

0b10

Implemented and disabled. ExternalSecureNoninvasiveDebugEnabled() == FALSE.

0b11

Implemented and enabled. ExternalSecureNoninvasiveDebugEnabled() == TRUE.

All other values are reserved.

SID, bits [5:4]:

Secure invasive debug.

SIDMeaning
0b00

Secure state is not implemented.

0b10

Implemented and disabled. ExternalSecureInvasiveDebugEnabled() == FALSE.

0b11

Implemented and enabled. ExternalSecureInvasiveDebugEnabled() == TRUE.

All other values are reserved.

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

Non-secure non-invasive debug.

NSNIDMeaning
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.

Otherwise:

Non-secure non-invasive debug.

NSNIDMeaning
0b00

Non-secure state is not implemented.

0b10

Implemented and disabled. ExternalNoninvasiveDebugEnabled() == FALSE.

0b11

Implemented and enabled. ExternalNoninvasiveDebugEnabled() == TRUE.

All other values are reserved.

NSID, bits [1:0]:

Non-secure invasive debug.

NSIDMeaning
0b00

Non-secure state is not implemented.

0b10

Implemented and disabled. ExternalInvasiveDebugEnabled() == FALSE.

0b11

Implemented and enabled. ExternalInvasiveDebugEnabled() == TRUE.

All other values are reserved.

Accessing DBGAUTHSTATUS_EL1

DBGAUTHSTATUS_EL1 can be accessed through the external debug interface:

ComponentOffsetInstance
Debug0xFB8DBGAUTHSTATUS_EL1

Accessible as follows:

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