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arm/trusted-services: simplify SmmGW configuration

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Bound Authenticated Variable configuration related settings to yocto
variables. The aim is easier configuration by hiding SmmGW build system
internals at the yocto recipe level.

For details please see documentation/trusted-services.md

Signed-off-by: Gyorgy Szing <gyorgy.szing@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>
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Gyorgy Szing authored and Jon Mason committed 2025-05-20 14:00:05 -04:00
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documentation/trusted-services.md
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@@ -57,6 +57,18 @@ Optionally for testing purposes you can add `packagegroup-ts-tests` into your im
meta-arm also includes Trusted Service OEQA tests which can be used for automated testing.
See `ci/trusted-services.yml` for an example how to include them into an image.
## Configuration options
Some TS recipes support yocto variables to set build configuration. These variables can be set in .conf files (machine
specific or local.conf), or .bbappend files.
SmmGW SP recipe supports the following configuration variables
| Variable name | Type | Description |
|-----------------------|------|--------------------------------------------------------------------------------------------------------|
| SMMGW_AUTH_VAR | Bool | Enable Authenticated variable support |
| SMMGW_INTERNAL_CRYPTO | Bool | Use MbedTLS build into SmmGW for authentication related crypto operations. Depends on SMMGW_AUTH_VAR=1 |
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[^1]: https://trusted-services.readthedocs.io/en/integration/overview/index.html