EDDEVAFF0, External Debug Device Affinity register 0

The EDDEVAFF0 characteristics are:

Purpose

Copy of the low half of the PE MPIDR_EL1 register that allows a debugger to determine which PE in a multiprocessor system the external debug component relates to.

Configuration

When FEAT_DoPD is implemented, EDDEVAFF0 is in the Core power domain. Otherwise, EDDEVAFF0 is in the Debug power domain.

Attributes

EDDEVAFF0 is a 32-bit register.

Field descriptions

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
MPIDR_EL1lo

MPIDR_EL1lo, bits [31:0]

MPIDR_EL1 low half. Read-only copy of the low half of MPIDR_EL1, as seen from the highest implemented Exception level.

Accessing EDDEVAFF0

EDDEVAFF0 can be accessed through the external debug interface:

Component	Offset	Instance
Debug	0xFA8	EDDEVAFF0

This interface is accessible as follows:

When FEAT_DoPD is not implemented or IsCorePowered(), accesses to this register are RO.
Otherwise, accesses to this register generate an error response.

04/07/2023 11:26; 1b994cb0b8c6d1ae5a9a15edbc8bd6ce3b5c7d68