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arm_ffa: introduce armffa command

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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>
This commit is contained in:
Abdellatif El Khlifi
2023-08-04 14:33:43 +01:00
committed by Tom Rini
parent a2f5c91cda
commit f16a48fec9
10 changed files with 356 additions and 0 deletions
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9
doc/arch/arm64.ffa.rst
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@@ -120,6 +120,8 @@ At this stage the FF-A bus is registered with the DM and can be interacted with
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 @@ Relationship between the sandbox emulator and the FF-A device
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
--------------------------------------