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| author | Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com> | 2022-11-08 10:31:07 +0000 |
|---|---|---|
| committer | Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com> | 2023-04-27 16:02:27 +0100 |
| commit | 03d3c0d729e24713d657209bedf74d255550babb (patch) | |
| tree | 5e85a68857537809756ef9521e221effc0a7725f /docs | |
| parent | d5f19c49baa7f420daf3afa2b79cc977ce2e9c74 (diff) | |
| download | arm-trusted-firmware-03d3c0d729e24713d657209bedf74d255550babb.tar.gz | |
feat(sme): enable SME2 functionality for NS world
FEAT_SME2 is an extension of FEAT_SME and an optional feature
from v9.2. Its an extension of SME, wherein it not only
processes matrix operations efficiently, but also provides
outer-product instructions to accelerate matrix operations.
It affords instructions for multi-vector operations.
Further, it adds an 512 bit architectural register ZT0.
This patch implements all the changes introduced with FEAT_SME2
to ensure that the instructions are allowed to access ZT0
register from Non-secure lower exception levels.
Additionally, it adds support to ensure FEAT_SME2 is aligned
with the existing FEATURE DETECTION mechanism, and documented.
Change-Id: Iee0f61943304a9cfc3db8f986047b1321d0a6463
Signed-off-by: Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/getting_started/build-options.rst | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/docs/getting_started/build-options.rst b/docs/getting_started/build-options.rst index d2f463fab..2229591b5 100644 --- a/docs/getting_started/build-options.rst +++ b/docs/getting_started/build-options.rst @@ -442,6 +442,13 @@ Common build options build with these options will fail. This flag can take the values 0 to 2, to align with the ``FEATURE_DETECTION`` mechanism. Default is 0. +- ``ENABLE_SME2_FOR_NS``: Numeric value to enable Scalable Matrix Extension + version 2 (SME2) for the non-secure world only. SME2 is an optional + architectural feature for AArch64 and TF-A support is experimental. + This should be set along with ENABLE_SME_FOR_NS=1, if not, the default SME + accesses will still be trapped. This flag can take the values 0 to 2, to + align with the ``FEATURE_DETECTION`` mechanism. Default is 0. + - ``ENABLE_SME_FOR_SWD``: Boolean option to enable the Scalable Matrix Extension for secure world use along with SVE and FPU/SIMD, ENABLE_SME_FOR_NS must also be set to use this. If enabling this, the secure world MUST |