PMOVSSET

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PMOVSSET_EL0, Performance Monitors Overflow Flag Status Set Register

Purpose

Allows software to set the unsigned overflow flags for the following counters to 1:

Configuration

External register PMOVSSET_EL0 bits [31:0] are architecturally mapped to AArch64 System register PMOVSSET_EL0[31:0] when FEAT_PMUv3_EXT32 is implemented and FEAT_PMUv3p9 is not implemented.

External register PMOVSSET_EL0 bits [31:0] are architecturally mapped to AArch64 System register PMOVSCLR_EL0[31:0] when FEAT_PMUv3_EXT32 is implemented and FEAT_PMUv3p9 is not implemented.

External register PMOVSSET_EL0 bits [63:32] are architecturally mapped to AArch64 System register PMOVSSET_EL0[63:32] when FEAT_PMUv3_EXT64 is implemented or FEAT_PMUv3p9 is implemented.

External register PMOVSSET_EL0 bits [63:32] are architecturally mapped to AArch64 System register PMOVSCLR_EL0[63:32] when FEAT_PMUv3_EXT64 is implemented or FEAT_PMUv3p9 is implemented.

External register PMOVSSET_EL0 bits [31:0] are architecturally mapped to AArch32 System register PMOVSR[31:0].

External register PMOVSSET_EL0 bits [31:0] are architecturally mapped to AArch32 System register PMOVSSET[31:0].

This register is present only when FEAT_PMUv3_EXT is implemented. Otherwise, direct accesses to PMOVSSET_EL0 are RES0.

Attributes

Field descriptions

When FEAT_PMUv3_EXT64 is implemented, or FEAT_PMUv3p9 is implemented, or FEAT_PMUv3_ICNTR is implemented:

Bits [63:33]

F0, bit [32]
When FEAT_PMUv3_ICNTR is implemented:

Unsigned overflow flag for PMICNTR_EL0 set. On writes, allows software to set the unsigned overflow flag for PMICNTR_EL0 to 1. On reads, returns the unsigned overflow flag for PMICNTR_EL0.

F0	Meaning
0b0	PMICNTR_EL0 has not overflowed.
0b1	PMICNTR_EL0 has overflowed.

The reset behavior of this field is:

On a Warm reset, this field resets to '0'.

Accessing this field has the following behavior:

When SoftwareLockStatus(), access to this field is RO.
Otherwise, access to this field is W1S.

Otherwise:

C, bit [31]

Unsigned overflow flag for PMCCNTR_EL0 set. On writes, allows software to set the unsigned overflow flag for PMCCNTR_EL0 to 1. On reads, returns the unsigned overflow flag for PMCCNTR_EL0 overflow status.

C	Meaning
0b0	PMCCNTR_EL0 has not overflowed.
0b1	PMCCNTR_EL0 has overflowed.

PMCR_EL0.LC controls whether an overflow is detected from unsigned overflow of PMCCNTR_EL0[31:0] or unsigned overflow of PMCCNTR_EL0[63:0].

The reset behavior of this field is:

On a Cold reset, when FEAT_PMUv3_EXTPMN is implemented, this field resets to an architecturally UNKNOWN value.
On a Warm reset, when FEAT_PMUv3_EXTPMN is not implemented, this field resets to an architecturally UNKNOWN value.

Accessing this field has the following behavior:

When SoftwareLockStatus(), access to this field is RO.
Otherwise, access to this field is W1S.

P<m>, bit [m], for m = 30 to 0

Unsigned overflow flag for PMEVCNTR<m>_EL0 set. On writes, allows software to set the unsigned overflow flag for PMEVCNTR<m>_EL0 to 1. On reads, returns the unsigned overflow flag for PMEVCNTR<m>_EL0 overflow status.

P<m>	Meaning
0b0	PMEVCNTR<m>_EL0 has not overflowed.
0b1	PMEVCNTR<m>_EL0 has overflowed.

If FEAT_PMUv3p5 is implemented, MDCR_EL2.HLP and PMCR_EL0.LP control whether an overflow is detected from unsigned overflow of PMEVCNTR<m>_EL0[31:0] or unsigned overflow of PMEVCNTR<m>_EL0[63:0].

When FEAT_PMUv3_EXTPMN is implemented, MDCR_EL2.HLP and PMCR_EL0.LP are applicable only for event counters in the second and first range. For more information about event counter ranges, see MDCR_EL2.HPMN.

The reset behavior of this field is:

On a Cold reset, when FEAT_PMUv3_EXTPMN is implemented, this field resets to an architecturally UNKNOWN value.
On a Warm reset, when FEAT_PMUv3_EXTPMN is not implemented, this field resets to an architecturally UNKNOWN value.

Accessing this field has the following behavior:

When m >= NUM_PMU_COUNTERS, access to this field is RAZ/WI.
Access to this field is RAZ/WI if all the following are true:
- FEAT_PMUv3_EXTPMN is implemented.
- m >= UInt(EffectiveEPMN()).
- !IsMostSecureAccess(addrdesc).
When SoftwareLockStatus(), access to this field is RO.
Otherwise, access to this field is W1S.

Otherwise:

C, bit [31]

C	Meaning
0b0	PMCCNTR_EL0 has not overflowed.
0b1	PMCCNTR_EL0 has overflowed.

PMCR_EL0.LC controls whether an overflow is detected from unsigned overflow of PMCCNTR_EL0[31:0] or unsigned overflow of PMCCNTR_EL0[63:0].

The reset behavior of this field is:

On a Cold reset, when FEAT_PMUv3_EXTPMN is implemented, this field resets to an architecturally UNKNOWN value.
On a Warm reset, when FEAT_PMUv3_EXTPMN is not implemented, this field resets to an architecturally UNKNOWN value.

Accessing this field has the following behavior:

When SoftwareLockStatus(), access to this field is RO.
Otherwise, access to this field is W1S.

P<m>, bit [m], for m = 30 to 0

P<m>	Meaning
0b0	PMEVCNTR<m>_EL0 has not overflowed.
0b1	PMEVCNTR<m>_EL0 has overflowed.

If FEAT_PMUv3p5 is implemented, MDCR_EL2.HLP and PMCR_EL0.LP control whether an overflow is detected from unsigned overflow of PMEVCNTR<m>_EL0[31:0] or unsigned overflow of PMEVCNTR<m>_EL0[63:0].

The reset behavior of this field is:

On a Cold reset, when FEAT_PMUv3_EXTPMN is implemented, this field resets to an architecturally UNKNOWN value.
On a Warm reset, when FEAT_PMUv3_EXTPMN is not implemented, this field resets to an architecturally UNKNOWN value.

Accessing this field has the following behavior:

When m >= NUM_PMU_COUNTERS, access to this field is RAZ/WI.
Access to this field is RAZ/WI if all the following are true:
- FEAT_PMUv3_EXTPMN is implemented.
- m >= UInt(EffectiveEPMN()).
- !IsMostSecureAccess(addrdesc).
When SoftwareLockStatus(), access to this field is RO.
Otherwise, access to this field is W1S.

Accessing PMOVSSET_EL0

Note

SoftwareLockStatus() depends on the type of access attempted and AllowExternalPMUAccess() has a new definition from Armv8.4. Refer to the Pseudocode definitions for more information.

Accesses to this register use the following encodings:

When FEAT_PMUv3_EXT64 is implemented, or FEAT_PMUv3_ICNTR is implemented, or FEAT_PMUv3p9 is implemented

[63:0] Accessible at offset 0xCC0 from PMU

When DoubleLockStatus(), or !IsCorePowered(), or !AllowExternalPMUAccess(addrdesc), accesses to this register generate an error response.
When (FEAT_PMUv3_EXTPMN is not implemented, or !IsMostSecureAccess(addrdesc), or PMCCR().OSLO == 0) and OSLockStatus(), accesses to this register generate an error response.
When FEAT_PMUv3_EXT32 is implemented and SoftwareLockStatus(), accesses to this register are RO.
Otherwise, accesses to this register are RW.

When FEAT_PMUv3_EXT32 is implemented, FEAT_PMUv3_ICNTR is not implemented, and FEAT_PMUv3p9 is not implemented

[31:0] Accessible at offset 0xCC0 from PMU

When DoubleLockStatus(), or !IsCorePowered(), or !AllowExternalPMUAccess(addrdesc), accesses to this register generate an error response.
When (FEAT_PMUv3_EXTPMN is not implemented, or !IsMostSecureAccess(addrdesc), or PMCCR().OSLO == 0) and OSLockStatus(), accesses to this register generate an error response.
When SoftwareLockStatus(), accesses to this register are RO.
Otherwise, accesses to this register are RW.

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																															F0
C	P30	P29	P28	P27	P26	P25	P24	P23	P22	P21	P20	P19	P18	P17	P16	P15	P14	P13	P12	P11	P10	P9	P8	P7	P6	P5	P4	P3	P2	P1	P0

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
C	P30	P29	P28	P27	P26	P25	P24	P23	P22	P21	P20	P19	P18	P17	P16	P15	P14	P13	P12	P11	P10	P9	P8	P7	P6	P5	P4	P3	P2	P1	P0

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
C	P30	P29	P28	P27	P26	P25	P24	P23	P22	P21	P20	P19	P18	P17	P16	P15	P14	P13	P12	P11	P10	P9	P8	P7	P6	P5	P4	P3	P2	P1	P0

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
C	P30	P29	P28	P27	P26	P25	P24	P23	P22	P21	P20	P19	P18	P17	P16	P15	P14	P13	P12	P11	P10	P9	P8	P7	P6	P5	P4	P3	P2	P1	P0

PMOVSSET_EL0, Performance Monitors Overflow Flag Status Set Register

Purpose

Configuration

Attributes

Field descriptions

When FEAT_PMUv3_EXT64 is implemented, or FEAT_PMUv3p9 is implemented, or FEAT_PMUv3_ICNTR is implemented:

Bits [63:33]

F0, bit [32]When FEAT_PMUv3_ICNTR is implemented:

Otherwise:

C, bit [31]

P<m>, bit [m], for m = 30 to 0

Otherwise:

C, bit [31]

P<m>, bit [m], for m = 30 to 0

Accessing PMOVSSET_EL0

When FEAT_PMUv3_EXT64 is implemented, or FEAT_PMUv3_ICNTR is implemented, or FEAT_PMUv3p9 is implemented

When FEAT_PMUv3_EXT32 is implemented, FEAT_PMUv3_ICNTR is not implemented, and FEAT_PMUv3p9 is not implemented

F0, bit [32]
When FEAT_PMUv3_ICNTR is implemented:

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
C	P30	P29	P28	P27	P26	P25	P24	P23	P22	P21	P20	P19	P18	P17	P16	P15	P14	P13	P12	P11	P10	P9	P8	P7	P6	P5	P4	P3	P2	P1	P0