fix(cpufeat): use of additional breakpoints

Extended Breakpoints access through mdcr_el3.ebwe is available
only when there are greater than 16 breakpoints implemented.
Otherwise the EBWE Bit is RES0

fix(cpufeat): use of additional breakpoints

Extended Breakpoints access through mdcr_el3.ebwe is available
only when there are greater than 16 breakpoints implemented.
Otherwise the EBWE Bit is RES0 and we could skip enabling Extended
Breakpoint access.

Ref: https://developer.arm.com/documentation/111107/2025-09/AArch64-Registers/MDCR-EL3--Monitor-Debug-Configuration-Register--EL3-?lang=en

Change-Id: I2b2147e83d65ee9b0492d3cf3adafd5c8cbe17f5
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>

show more ...

feat(debugv8p9): add support for FEAT_Debugv8p9

This patch enables FEAT_Debugv8p9 and prevents EL1/0 from
trapping to EL3 when accessing MDSELR_EL1 register by
setting the MDCR_EL3.EBWE bit.

Signed

feat(debugv8p9): add support for FEAT_Debugv8p9

This patch enables FEAT_Debugv8p9 and prevents EL1/0 from
trapping to EL3 when accessing MDSELR_EL1 register by
setting the MDCR_EL3.EBWE bit.

Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
Change-Id: I3613af1dd8cb8c0d3c33dc959f170846c0b9695a

show more ...