46 lines
976 B
Plaintext
46 lines
976 B
Plaintext
/'
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' Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
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'
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' SPDX-License-Identifier: BSD-3-Clause
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'/
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@startuml
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autonumber "<b>[#]</b>"
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participant "SDEI client" as EL2
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participant EL3
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participant "Secure Partition" as SP
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activate EL2
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EL2->EL3: **SDEI_EVENT_REGISTER**(ev, handler, ...)
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EL3->EL2: success
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EL2->EL3: **SDEI_EVENT_ENABLE**(ev)
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EL3->EL2: success
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EL2->EL3: **SDEI_PE_UNMASK**()
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EL3->EL2: 1
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... <<Business as usual>> ...
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EL3<--]: **CRITICAL EVENT**
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activate EL3 #red
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note over EL3: Critical event triage
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EL3->SP: dispatch
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activate SP #salmon
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note over SP: Critical event handling
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SP->EL3: done
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deactivate SP
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EL3-->EL3: sdei_dispatch_event(ev)
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note over EL3: Prepare SDEI dispatch
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EL3->EL2: dispatch
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activate EL2 #salmon
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note over EL2: SDEI handler
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EL2->EL3: **SDEI_EVENT_COMPLETE()**
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deactivate EL2
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note over EL3: Complete SDEI dispatch
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EL3->EL2: resumes preempted execution
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deactivate EL3
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... <<Normal execution resumes>> ...
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@enduml
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