| '------------------------------------------------------------------------------- |
| ' Copyright (c) 2024, Arm Limited and Contributors. All rights reserved. |
| ' |
| ' SPDX-License-Identifier: BSD-3-Clause |
| ' |
| '------------------------------------------------------------------------------- |
| |
| @startuml |
| package "Normal World" { |
| package "EL-1" { |
| [arm-ffa-user] as driver |
| [Linux kernel] as kernel |
| } |
| package "EL-0" { |
| [shell] |
| [xtest] |
| } |
| } |
| package "Secure World" { |
| package "SEL-0" { |
| [Test SP] as sp |
| } |
| package "SEL-1" { |
| [OP-TEE kernel] as optee |
| } |
| } |
| |
| [shell] -> driver: Load driver |
| [shell] -> [xtest] : Call xtest -t ffa_spmc |
| [xtest] -> driver: Open |
| driver -> kernel: Send FF-A message |
| kernel -> optee: Forward FF-A message |
| optee -> sp: Forward FF-A message |
| @enduml |