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TRCCLAIMSET: Trace Claim Tag Set Register

Purpose

In conjunction with TRCCLAIMCLR, provides Claim Tag bits that can be separately set and cleared to indicate whether functionality is in use by a debug agent.

For additional information, see the CoreSight Architecture Specification.

Configuration

External register TRCCLAIMSET bits [31:0] are architecturally mapped to AArch64 System register TRCCLAIMSET[31:0].

This register is present only when FEAT_ETE is implemented and FEAT_TRC_EXT is implemented. Otherwise, direct accesses to TRCCLAIMSET are RES0.

The number of claim tag bits implemented is IMPLEMENTATION DEFINED. Arm recommends that implementations support a minimum of four claim tag bits, that is, SET[3:0] reads as 0b1111.

Attributes

TRCCLAIMSET is a 32-bit register.

Field descriptions

313029282726252423222120191817161514131211109876543210
SET[31]SET[30]SET[29]SET[28]SET[27]SET[26]SET[25]SET[24]SET[23]SET[22]SET[21]SET[20]SET[19]SET[18]SET[17]SET[16]SET[15]SET[14]SET[13]SET[12]SET[11]SET[10]SET[9]SET[8]SET[7]SET[6]SET[5]SET[4]SET[3]SET[2]SET[1]SET[0]

SET[<m>], bit [m], for m = 31 to 0

Claim Tag Set. Indicates whether Claim Tag bit <m> is implemented, and is used to set Claim Tag bit <m> to 1.

SET[<m>]Meaning
0b0

On a read: Claim Tag bit <m> is not implemented.

On a write: Ignored.

0b1

On a read: Claim Tag bit <m> is implemented.

On a write: Set Claim Tag bit <m> to 1.

This bit reads-as-zero and ignores writes if m > the number of Claim Tag bits.

Access to this field is RAO/W1S.

Accessing TRCCLAIMSET

TRCCLAIMSET can be accessed through the external debug interface:

ComponentOffsetInstance
ETE0xFA0TRCCLAIMSET

This interface is accessible as follows: