arm_ffa: introduce armffa command
Provide armffa command showcasing the use of the U-Boot FF-A support
armffa is a command showcasing how to invoke FF-A operations.
This provides a guidance to the client developers on how to
call the FF-A bus interfaces. The command also allows to gather secure
partitions information and ping these partitions. The command is also
helpful in testing the communication with secure partitions.
For more details please refer to the command documentation [1].
A Sandbox test is provided for the armffa command.
[1]: doc/usage/cmd/armffa.rst
Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Jens Wiklander <jens.wiklander@linaro.org>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/doc/arch/arm64.ffa.rst b/doc/arch/arm64.ffa.rst
index 7160637..325fb80 100644
--- a/doc/arch/arm64.ffa.rst
+++ b/doc/arch/arm64.ffa.rst
@@ -120,6 +120,8 @@
the DM APIs.
Clients are able to probe then use the FF-A bus by calling uclass_first_device().
+Please refer to the armffa command implementation as an example of how to probe
+and interact with the FF-A bus.
When calling uclass_first_device(), the FF-A driver is probed and ends up calling
ffa_do_probe() provided by the Uclass which does the following:
@@ -219,6 +221,13 @@
ffa_emul 0 [ + ] sandbox_ffa_emul `-- arm-ffa-emul
ffa 0 [ ] sandbox_arm_ffa `-- sandbox-arm-ffa
+The armffa command
+-----------------------------------
+
+armffa is a command showcasing how to use the FF-A bus and how to invoke the driver operations.
+
+Please refer the command documentation at :doc:`../usage/cmd/armffa`
+
Example of boot logs with FF-A enabled
--------------------------------------