ARM Architecture Reference Manual ARMv7-A and ARMv7-R edition

Debug Registers Reference
C10.8.7 Authentication Status Register (DBGAUTHSTATUS)
The Authentication Status Register, DBGAUTHSTATUS, indicates the implemented debug features and
provides the current values of the configuration inputs that determine the debug permissions. The value
returned depends on whether the processor implements the Security Extensions.
The DBGAUTHSTATUS Register is:
debug register 1006, at offset 0xFB8
a read-only register
when the Security Extensions are implemented, a Common register.
When the Security Extensions are implemented, the format of the DBGAUTHSTATUS Register is:
31 8 7 6 5 4 3 2 1
Reserved, UNK
1 1 1 1
Bits [31:8] Reserved, UNK.
Secure non-invasive debug features implemented
Secure non-invasive debug enabled
Secure invasive debug features implemented
Secure invasive debug enabled
Non-secure non-invasive debug features implemented
Non-secure non-invasive debug enabled
Non-secure invasive debug features implemented
Non-secure invasive debug enabled
Secure non-invasive debug features implemented, bit [7]
This bit is RAO, Secure non-invasive debug features are implemented.
Secure non-invasive debug enabled, bit [6]
This bit indicates the logical result of:
(DBGEN OR NIDEN) AND (SPIDEN OR SPNIDEN).
Secure invasive debug features implemented, bit [5]
This bit is RAO, Secure invasive debug features are implemented.
Secure invasive debug enabled, bit [4]
This bit indicates the logical result of (DBGEN AND SPIDEN).
Non-secure non-invasive debug features implemented, bit [3]
This bit is RAO, Non-secure non-invasive debug features are implemented.
Non-secure non-invasive debug enabled, bit [2]
This bit indicates the logical result of (DBGEN OR NIDEN)
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