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11da3403e9
For nearly all commands in U-Boot the '?' variable is handled the same way with 0 meaning success, 1 meaning any failure. Explain this in the general rules section of the cmdline documentation (with a link to a counter example) and then remove the redundant wording from most commands. We retain a section about the return value in a number of places where we are doing something such as always returning a specific value or we have useful additional information to go along with the normal return codes. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
93 lines
1.7 KiB
ReStructuredText
93 lines
1.7 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0+
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.. Copyright 2022-2023 Arm Limited and/or its affiliates <open-source-office@arm.com>
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.. index::
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single: armffa (command)
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armffa command
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==============
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Synopsis
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--------
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::
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armffa [sub-command] [arguments]
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sub-commands:
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getpart [partition UUID]
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lists the partition(s) info
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ping [partition ID]
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sends a data pattern to the specified partition
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devlist
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displays information about the FF-A device/driver
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Description
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-----------
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armffa is a command showcasing how to use the FF-A bus and how to invoke its operations.
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This provides a guidance to the client developers on how to call the FF-A bus interfaces.
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The command also allows to gather secure partitions information and ping these partitions.
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The command is also helpful in testing the communication with secure partitions.
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Example
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-------
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The following examples are run on Corstone-1000 platform.
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* ping
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::
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corstone1000# armffa ping 0x8003
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SP response:
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[LSB]
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fffffffe
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0
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0
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0
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0
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* ping (failure case)
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::
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corstone1000# armffa ping 0
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Sending direct request error (-22)
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* getpart
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::
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corstone1000# armffa getpart 33d532ed-e699-0942-c09c-a798d9cd722d
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Partition: id = 8003 , exec_ctxt 1 , properties 3
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* getpart (failure case)
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::
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corstone1000# armffa getpart 33d532ed-e699-0942-c09c-a798d9cd7221
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INVALID_PARAMETERS: Unrecognized UUID
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Failure in querying partitions count (error code: -22)
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* devlist
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::
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corstone1000# armffa devlist
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device name arm_ffa, dev 00000000fdf41c30, driver name arm_ffa, ops 00000000fffc0e98
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Configuration
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-------------
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The command is available if CONFIG_CMD_ARMFFA=y and CONFIG_ARM_FFA_TRANSPORT=y.
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