arm-trusted-firmware/include/lib/el3_runtime
Andre Przywara d5384b69d1 refactor(cpufeat): enable FEAT_NV2 for FEAT_STATE_CHECKED
At the moment we only support for FEAT_NV2 to be either unconditionally
compiled in, or to be not supported at all.

Add support for runtime detection (CTX_INCLUDE_NEVE_REGS=2), by
splitting get_armv8_4_feat_nv_support() into an ID register reading
function and a second function to report the support status. That
function considers both build time settings and runtime information
(if needed), and is used before we access the VNCR_EL2 system register.
Also move the context saving code from assembly to C, and use the new
is_feat_nv2_supported() function to guard its execution.

Change the FVP platform default to the now supported dynamic option (=2),
so the right decision can be made by the code at runtime.

Change-Id: I85b080641995fb72cfd4ac933f7a3f75770c2cb9
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2023-03-22 13:33:22 +00:00
..
aarch32 style: remove useless trailing semicolon and line continuations 2023-03-09 14:59:08 +01:00
aarch64 refactor(cpufeat): enable FEAT_NV2 for FEAT_STATE_CHECKED 2023-03-22 13:33:22 +00:00
context_mgmt.h refactor(context mgmt): add cm_prepare_el3_exit_ns function 2022-04-12 17:42:11 +02:00
cpu_data.h feat(rme): add context management changes for FEAT_RME 2021-10-05 18:41:35 +02:00
pubsub.h build: always prefix section names with . 2023-02-20 18:29:33 +00:00
pubsub_events.h Switch AARCH32/AARCH64 to __aarch64__ 2019-08-01 13:45:03 -07:00