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 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:

64-bit register when the Fault Handling Interrupt is implemented, the implementation uses the recommended layout for the ERRIRQCR registers and the implementation uses simple interrupts
32-bit register when the implementation uses message-signaled interrupts, the Fault Handling Interrupt is implemented and the implementation uses the recommended layout for the ERRIRQCR registers
32-bit register when the implementation does not use the recommended layout for the ERRIRQCR registers

Field descriptions

When the Fault Handling Interrupt is implemented, the implementation uses the recommended layout for the ERRIRQCR registers and the implementation uses simple interrupts:

63	62	61	60	59	58	57	56	55	54	53	52	51	50	49	48	47	46	45	44	43	42	41	40	39	38	37	36	35	34	33	32
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
RES0
RES0																								IRQEN	RES0

Bits [63:8]

Reserved, RES0.

IRQEN, bit [7]

Interrupts enable. Enables generation of interrupts.

IRQEN	Meaning
0b0	Disabled.
0b1	Enabled.

The reset behavior of this field is:

On an Error recovery reset, this field resets to an IMPLEMENTATION DEFINED value.

Bits [6:0]

Reserved, RES0.

When the implementation uses message-signaled interrupts, the Fault Handling Interrupt is implemented and the implementation uses the recommended layout for the ERRIRQCR 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
RES0																								IRQEN	NSMSI	SH		MemAttr

Bits [31:8]

Reserved, RES0.

IRQEN, bit [7]
When the component supports disabling message signaled interrupts:

Message signaled interrupt enable. Enables generation of message signaled interrupts.

IRQEN	Meaning
0b0	Disabled.
0b1	Enabled.

The reset behavior of this field is:

On an Error recovery reset, this field resets to 0.

Otherwise:

Reserved, RES0.

Message signaled interrupt enable.

Message signaled interrupts are always enabled.

NSMSI, bit [6]
When the component supports configuring the physical address space for message signaled interrupts:

Non-secure message signaled interrupt. Defines the physical address space for message signaled interrupts.

NSMSI	Meaning
0b0	Secure physical address space.
0b1	Non-secure physical address space.

The reset behavior of this field is:

On an Error recovery reset, this field resets to an IMPLEMENTATION DEFINED value.

Accessing this field has the following behavior:

Access is RO if an access is Non-secure or an access is Realm.
Otherwise, access to this field is RW.

Otherwise:

Reserved, RES0.

Non-secure message signaled interrupt.

The physical address space for message signaled interrupts is IMPLEMENTATION DEFINED.

SH, bits [5:4]
When the component supports configuring the Shareability domain for message signaled interrupts:

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.

The reset behavior of this field is:

On an Error recovery reset, this field resets to an architecturally UNKNOWN value.

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:

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.

Note

This is the same format as the VMSAv8-64 stage 2 memory region attributes.

The reset behavior of this field is:

On an Error recovery reset, this field resets to an architecturally UNKNOWN value.

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 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

IMPLEMENTATION DEFINED, bits [31:0]

IMPLEMENTATION DEFINED.

Accessing ERRFHICR2

If the implementation does not use the recommended layout for the ERRIRQCR registers then accesses to ERRFHICR2 are IMPLEMENTATION DEFINED.

ERRFHICR2 can be accessed through the memory-mapped interfaces:

Component	Offset	Instance
RAS	0xE8C	ERRFHICR2

This interface is accessible as follows:

When the implementation uses message-signaled interrupts, (an access is Non-secure or an access is Realm), the implementation uses the recommended layout for the ERRIRQCR registers and ERRFHICR2.NSMSI configures the physical address space for message-signaled interrupts as Secure, accesses to this register are RO.
Otherwise, accesses to this register are RW.

26/03/2024 09:49; 67c0ae5282a7629ba0ea0ba7267b43cd4f7939f6

ERRFHICR2, Fault Handling Interrupt Configuration Register 2

Purpose

Configuration

Attributes

Field descriptions

When the Fault Handling Interrupt is implemented, the implementation uses the recommended layout for the ERRIRQCR registers and the implementation uses simple interrupts:

Bits [63:8]

IRQEN, bit [7]

Bits [6:0]

When the implementation uses message-signaled interrupts, the Fault Handling Interrupt is implemented and the implementation uses the recommended layout for the ERRIRQCR registers:

Bits [31:8]

IRQEN, bit [7]When the component supports disabling message signaled interrupts:

Otherwise:

NSMSI, bit [6]When the component supports configuring the physical address space for message signaled interrupts:

Otherwise:

SH, bits [5:4]When the component supports configuring the Shareability domain for message signaled interrupts:

Otherwise:

MemAttr, bits [3:0]When the component supports configuring the memory type for message signaled interrupts:

Otherwise:

When the implementation does not use the recommended layout for the ERRIRQCR registers:

IMPLEMENTATION DEFINED, bits [31:0]

Accessing ERRFHICR2

ERRFHICR2 can be accessed through the memory-mapped interfaces:

IRQEN, bit [7]
When the component supports disabling message signaled interrupts:

NSMSI, bit [6]
When the component supports configuring the physical address space for message signaled interrupts:

SH, bits [5:4]
When the component supports configuring the Shareability domain for message signaled interrupts:

MemAttr, bits [3:0]
When the component supports configuring the memory type for message signaled interrupts: