Djam/arm-trusted-firmware
1
0
Fork 0
mirror of https://github.com/ARM-software/arm-trusted-firmware.git synced 2025-04-17 01:54:22 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

docs(sve): update defaults for FEAT_SVE

Browse source 
FEAT_SVE build macro, "ENABLE_SVE_FOR_NS" default value has been updated
to 2, to support its existing behavior of dynamic detection as well as
keep it aligned with the changes concerning STATE=FEAT_STATE_CHECKED(2),
part of Feature Detection procedure.

Change-Id: Iee43e899f19dc9d5eb57c235998758f462a8c397
Signed-off-by: Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com>
This commit is contained in:
Jayanth Dodderi Chidanand 2023-04-03 11:24:26 +01:00
parent fc259b6c3a
commit 6a25ebbf63
1 changed files with 6 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
docs/getting_started/build-options.rst
View file

@ -436,11 +436,12 @@ Common build options
This is to avoid corruption of the Non-secure world data in the Z-registers
which are aliased by the SIMD and FP registers. The build option is not
compatible with the ``CTX_INCLUDE_FPREGS`` build option, and will raise an
assert on platforms where SVE is implemented and ``ENABLE_SVE_FOR_NS`` set to
1. This flag can take the values 0 to 2, to align with the ``FEATURE_DETECTION``
mechanism. The default is 1 but is automatically disabled when
ENABLE_SME_FOR_NS=1 since SME encompasses SVE. At this time, this build
option cannot be used on systems that have SPM_MM enabled.
assert on platforms where SVE is implemented and ``ENABLE_SVE_FOR_NS`` enabled.
This flag can take the values 0 to 2, to align with the ``FEATURE_DETECTION``
mechanism. The default is 2 but is automatically disabled when
ENABLE_SME_FOR_NS is enabled ( set to 1 or 2) since SME encompasses SVE.
At this time, this build option cannot be used on systems that have SPM_MM
enabled.
- ``ENABLE_SVE_FOR_SWD``: Boolean option to enable SVE for the Secure world.
SVE is an optional architectural feature for AArch64. Note that this option