TRCDEVARCH, Trace Device Architecture Register

The TRCDEVARCH characteristics are:

Purpose

Provides discovery information for the component.

For additional information, see the CoreSight Architecture Specification.

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

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

TRCDEVARCH is a 32-bit register.

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
ARCHITECT											PRESENT	REVISION				ARCHVER				ARCHPART

Defines the architect of the component. For Trace, this is Arm Limited.

Bits [31:28] are the JEP106 continuation code, 0b0100.

Bits [27:21] are the JEP106 identification code, 0b0111011.

Reads as 0b01000111011.

Access to this field is RO.

DEVARCH present. Indicates that the TRCDEVARCH register is present.

Reads as 0b1.

Access to this field is RO.

Revision. Defines the architecture revision of the component.

The value of this field is an IMPLEMENTATION DEFINED choice of:

All other values are reserved.

Access to this field is RO.

Architecture Version. Defines the architecture version of the component.

ARCHVER	Meaning
0b0101	ETEv1.

ARCHVER and ARCHPART are also defined as a single field, ARCHID, so that ARCHVER is ARCHID[15:12].

This field reads as 0x5.

Access to this field is RO.

Architecture Part. Defines the architecture of the component.

ARCHPART	Meaning
0xA13	Arm PE trace architecture.

ARCHVER and ARCHPART are also defined as a single field, ARCHID, so that ARCHPART is ARCHID[11:0].

This field reads as 0xA13.

Access to this field is RO.

External debugger accesses to this register are unaffected by the OS Lock.

Component	Offset	Instance
ETE	0xFBC	TRCDEVARCH

Accessible as follows:

When !IsTraceCorePowered(), accesses to this register generate an error response.
Otherwise, accesses to this register are RO.

15/12/2024 22:27; 5e0a212688c6bd7aee92394b6f5e491b4d0fee1d