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-rw-r--r--docs/getting_started/build-options.rst6
1 files changed, 6 insertions, 0 deletions
diff --git a/docs/getting_started/build-options.rst b/docs/getting_started/build-options.rst
index da5dcbf89..af4895efc 100644
--- a/docs/getting_started/build-options.rst
+++ b/docs/getting_started/build-options.rst
@@ -160,6 +160,12 @@ Common build options
- ``DEBUG``: Chooses between a debug and release build. It can take either 0
(release) or 1 (debug) as values. 0 is the default.
+- ``DECRYPTION_SUPPORT``: This build flag enables the user to select the
+ authenticated decryption algorithm to be used to decrypt firmware/s during
+ boot. It accepts 2 values: ``aes_gcm`` and ``none``. The default value of
+ this flag is ``none`` to disable firmware decryption which is an optional
+ feature as per TBBR. Also, it is an experimental feature.
+
- ``DISABLE_BIN_GENERATION``: Boolean option to disable the generation
of the binary image. If set to 1, then only the ELF image is built.
0 is the default.