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TRCDEVID, Device Configuration Register

The TRCDEVID characteristics are:

Purpose

Provides discovery information for the component.

For additional information see the CoreSight Architecture Specification.

Configuration

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

This register is present only when FEAT_ETE is implemented. Otherwise, direct accesses to TRCDEVID are UNDEFINED.

Attributes

TRCDEVID is a 64-bit register.

Field descriptions

The TRCDEVID bit assignments are:

6362616059585756555453525150494847464544434241403938373635343332
RES0
RES0
313029282726252423222120191817161514131211109876543210

Bits [63:0]

Reserved, RES0.

Accessing the TRCDEVID

Accesses to this register use the following encodings:

MRS <Xt>, TRCDEVID

op0op1CRnCRmop2
0b100b0010b01110b00100b111
if PSTATE.EL == EL0 then
    UNDEFINED;
elsif PSTATE.EL == EL1 then
    if Halted() && HaveEL(EL3) && EDSCR.SDD == '1' && boolean IMPLEMENTATION_DEFINED "EL3 trap priority when SDD == '1'" && CPTR_EL3.TTA == '1' then
        UNDEFINED;
    elsif CPACR_EL1.TTA == '1' then
        AArch64.SystemAccessTrap(EL1, 0x18);
    elsif EL2Enabled() && CPTR_EL2.TTA == '1' then
        AArch64.SystemAccessTrap(EL2, 0x18);
    elsif EL2Enabled() && (!HaveEL(EL3) || SCR_EL3.FGTEn == '1') && HDFGRTR_EL2.TRCID == '1' then
        AArch64.SystemAccessTrap(EL2, 0x18);
    elsif HaveEL(EL3) && CPTR_EL3.TTA == '1' then
        if Halted() && EDSCR.SDD == '1' then
            UNDEFINED;
        else
            AArch64.SystemAccessTrap(EL3, 0x18);
    else
        return TRCDEVID;
elsif PSTATE.EL == EL2 then
    if Halted() && HaveEL(EL3) && EDSCR.SDD == '1' && boolean IMPLEMENTATION_DEFINED "EL3 trap priority when SDD == '1'" && CPTR_EL3.TTA == '1' then
        UNDEFINED;
    elsif CPTR_EL2.TTA == '1' then
        AArch64.SystemAccessTrap(EL2, 0x18);
    elsif HaveEL(EL3) && CPTR_EL3.TTA == '1' then
        if Halted() && EDSCR.SDD == '1' then
            UNDEFINED;
        else
            AArch64.SystemAccessTrap(EL3, 0x18);
    else
        return TRCDEVID;
elsif PSTATE.EL == EL3 then
    if CPTR_EL3.TTA == '1' then
        AArch64.SystemAccessTrap(EL3, 0x18);
    else
        return TRCDEVID;