8.4.5.19 TCZ_CPU Fail Address Register 0

Name: TZC_CPU_FAIL_ADDRESS0
Offset: 0x1020
Reset: 0x00000000
Property: Read-only

Bit 3130292827262524 
 FAIL_ADDRESS[31:24] 
Access RRRRRRRR 
Reset 00000000 
Bit 2322212019181716 
 FAIL_ADDRESS[23:16] 
Access RRRRRRRR 
Reset 00000000 
Bit 15141312111098 
 FAIL_ADDRESS[15:8] 
Access RRRRRRRR 
Reset 00000000 
Bit 76543210 
 FAIL_ADDRESS[7:0] 
Access RRRRRRRR 
Reset 00000000 

Bits 31:0 – FAIL_ADDRESS[31:0] Failure Access Address

If a region permission check fails or a region overlap occurs, this field returns the bus address of the first failed access. The associated interrupt status must be cleared before this field can return the address of accesses of subsequent permission checks or region overlap failures.

This occurs even if TZC_CPU_ACTION does not enable the interrupt.

If the status flag for the filter unit in TZC_CPU_INT_STATUS is already set, new region permission check failures in the same filter unit do not update the associated fail status group of registers.