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docs(build): describes the SPMC_OPTEE build option

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Explains that the SPMC_OPTEE build option is used to load the SPMC at
S-EL1 using an OP-TEE specific mechanism.

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Change-Id: I71757d2d9ac98caf0ac6d8e64b221adaa0f70846
This commit is contained in:
Jens Wiklander 2022-12-14 17:02:16 +01:00
parent 302f05354f
commit bb0e33602d
1 changed files with 5 additions and 0 deletions
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5
docs/getting_started/build-options.rst
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@ -824,6 +824,11 @@ Common build options
disabled). This configuration supports pre-Armv8.4 platforms (aka not
implementing the ``FEAT_SEL2`` extension). This is an experimental feature.
- ``SPMC_OPTEE`` : This boolean option is used jointly with the SPM
Dispatcher option (``SPD=spmd``) and with ``SPMD_SPM_AT_SEL2=0`` to
indicate that the SPMC at S-EL1 is OP-TEE and an OP-TEE specific loading
mechanism should be used.
- ``SPMD_SPM_AT_SEL2`` : This boolean option is used jointly with the SPM
Dispatcher option (``SPD=spmd``). When enabled (1) it indicates the SPMC
component runs at the S-EL2 exception level provided by the ``FEAT_SEL2``