ERRFHICR2, Fault Handling Interrupt Configuration Register 2
The ERRFHICR2 characteristics are:
Purpose
Fault Handling Interrupt control and configuration register.
Configuration
This register is present only when (the Fault Handling Interrupt is implemented or the implementation does not use the recommended layout for the ERRIRQCR<n> registers) and interrupt configuration registers are implemented. Otherwise, direct accesses to ERRFHICR2 are RES0.
ERRFHICR2 is implemented only as part of a memory-mapped group of error records.
Attributes
ERRFHICR2 is a 32-bit register.
Field descriptions
The ERRFHICR2 bit assignments are:
When the Fault Handling Interrupt is implemented and the implementation uses the recommended layout for the ERRIRQCR<n> registers:
Bits [31:8]
Reserved, RES0.
IRQEN, bit [7]
When the component supports disabling message signaled interrupts:
When the component supports disabling message signaled interrupts:
Message signaled interrupt enable. Enables generation of message signaled interrupts.
| IRQEN | Meaning |
|---|---|
| 0b0 |
Disabled. |
| 0b1 |
Enabled. |
On an Error recovery reset, this field resets to 0.
Otherwise:
Otherwise:
Reserved, RES0.
Message signaled interrupt enable.
Message signaled interrupts are always enabled.
NSMSI, bit [6]
When the component supports configuring the Security attribute for message signaled interrupts and the component does not allow Non-secure writes to ERRFHICR2:
When the component supports configuring the Security attribute for message signaled interrupts and the component does not allow Non-secure writes to ERRFHICR2:
Security attribute. Defines the physical address space for message signaled interrupts.
| NSMSI | Meaning |
|---|---|
| 0b0 |
Secure. |
| 0b1 |
Non-secure. |
On an Error recovery reset, this field resets to an IMPLEMENTATION DEFINED value.
When the component allows Non-secure writes to ERRFHICR2:
When the component allows Non-secure writes to ERRFHICR2:
Reserved, RES0.
Security attribute. Defines the physical address space for message signaled interrupts.
The Security attribute used for message signaled interrupts is Non-secure.
Otherwise:
Otherwise:
Reserved, RES0.
Security attribute. Defines the physical address space for message signaled interrupts.
The Security attribute for message signaled interrupts is IMPLEMENTATION DEFINED.
SH, bits [5:4]
When the component supports configuring the Shareability domain:
When the component supports configuring the Shareability domain:
Shareability. Defines the Shareability domain for message signaled interrupts.
| SH | Meaning |
|---|---|
| 0b00 |
Not shared. |
| 0b10 |
Outer Shareable. |
| 0b11 |
Inner Shareable. |
All other values are reserved.
This field is ignored when ERRFHICR2.MemAttr specifies any of the following memory types:
- Any Device memory type.
- Normal memory, Inner Non-cacheable, Outer Non-cacheable.
All Device and Normal Inner Non-cacheable Outer Non-cacheable memory regions are always treated as Outer Shareable.
On an Error recovery reset, this field resets to an architecturally UNKNOWN value.
Otherwise:
Otherwise:
Reserved, RES0.
Shareability.
The Shareability domain for message signaled interrupts is IMPLEMENTATION DEFINED.
MemAttr, bits [3:0]
When the component supports configuring the memory type for message signaled interrupts:
When the component supports configuring the memory type for message signaled interrupts:
Memory type. Defines the memory type and attributes for message signaled interrupts.
| MemAttr | Meaning |
|---|---|
| 0b0000 |
Device-nGnRnE memory. |
| 0b0001 |
Device-nGnRE memory. |
| 0b0010 |
Device-nGRE memory. |
| 0b0011 |
Device-GRE memory. |
| 0b0101 |
Normal memory, Inner Non-cacheable, Outer Non-cacheable. |
| 0b0110 |
Normal memory, Inner Write-Through, Outer Non-cacheable. |
| 0b0111 |
Normal memory, Inner Write-Back, Outer Non-cacheable. |
| 0b1001 |
Normal memory, Inner Non-cacheable, Outer Write-Through. |
| 0b1010 |
Normal memory, Inner Write-Through, Outer Write-Through. |
| 0b1011 |
Normal memory, Inner Write-Back, Outer Write-Through. |
| 0b1101 |
Normal memory, Inner Non-cacheable, Outer Write-Back. |
| 0b1110 |
Normal memory, Inner Write-Through, Outer Write-Back. |
| 0b1111 |
Normal memory, Inner Write-Back, Outer Write-Back. |
All other values are reserved.
This is the same format as the VMSAv8-64 stage 2 memory region attributes.
On an Error recovery reset, this field resets to an architecturally UNKNOWN value.
Otherwise:
Otherwise:
Reserved, RES0.
Memory type.
The memory type used for message signaled interrupts is IMPLEMENTATION DEFINED.
When the implementation does not use the recommended layout for the ERRIRQCR<n> registers: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 IMPLEMENTATION DEFINED
| 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 |
| IMPLEMENTATION DEFINED | |||||||||||||||||||||||||||||||
IMPLEMENTATION DEFINED, bits [31:0]
IMPLEMENTATION DEFINED.
Accessing the ERRFHICR2
ERRFHICR2 can be accessed through the memory-mapped interfaces:
| Component | Offset |
|---|---|
| RAS | 0xE8C |
Accesses on this interface are RW.