4.4
System Security Control registers
The
System Security Control
(SSC) interface in the N1 SoC controls system-wide security features.
These features include the following:
• Selection of and internal sources for Debug Authentication signals
• General Purpose register for secure state storage
The registers are in the Always-on power domain so their states are maintained when the system is
powered down except when VSYS is powered down.
This section contains the following subsections:
•
4.4.1 System Security Control registers summary
•
4.4.2 SSC_DBGCFG_STAT Register
•
4.4.3 SSC_DBGCFG _SET Register
•
4.4.4 SSC_DBGCFG _CLR Register
•
•
•
•
4.4.8 SSC_SW_SCRATCH Registers
•
•
4.4.10 SSC_SW_CAPCTRL Register
•
•
•
•
•
•
•
•
•
4.4.1
System Security Control registers summary
The base memory address of the SSC registers is
0x0_2A42_0000
in the subystem peripherals region of
the
Application Processor
(AP) memory map.
The following table shows the SSC registers in offset order from the base memory address. Undefined
registers are reserved. Software must not attempt to access these registers.
Table 4-13 SCC registers summary
Offset
Name
Type Reset
Width Description
0x0010
SSC_DBGCFG_STAT
RO
0x0001_0000
32
Debug authentication configuration status
See
4.4.2 SSC_DBGCFG_STAT Register
.
0x0014
SSC_DBGCFG _SET
WO
N/A
32
Debug authentication configuration set.
See
4.4.3 SSC_DBGCFG _SET Register
.
0x0018
SSC_DBGCFG _CLR
WO
N/A
32
Debug authentication configuration clear.
See
4.4.4 SSC_DBGCFG _CLR Register
.
4 Programmers model
4.4 System Security Control registers
101489_0000_02_en
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