mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-04-15 17:14:21 +00:00
a5a5947a28
Signed-off-by: Tamas Ban <tamas.ban@arm.com> Change-Id: I93877ebeca1db6ee27dcb5446cc1f1a1e4e56775
79 lines
2.6 KiB
Text
79 lines
2.6 KiB
Text
@startuml
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skinparam ParticipantPadding 10
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skinparam BoxPadding 10
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box RSS
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participant RSS_BL1_1
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participant RSS_BL1_2
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participant RSS_BL2
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participant RSS_S
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endbox
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box SCP
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participant SCP_BL1
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endbox
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box AP
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participant AP_BL1
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participant AP_BL2
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participant AP_BL31
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endbox
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== RSS Boot phase ==
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-> RSS_BL1_1: Reset
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Rnote over RSS_BL1_1: ROM code, XIP
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Rnote over RSS_BL1_2: OTP code, XIP
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Rnote over RSS_BL2, AP_BL31: Stored in flash, loaded and executed in RAM
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activate RSS_BL1_1 #Green
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RSS_BL1_1 -->> RSS_BL1_2: Validate, measure
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Rnote over RSS_BL1_1: BL1_2 measurement\n\ saved to a shared buffer
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RSS_BL1_1 -> RSS_BL1_2: Pass execution
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deactivate RSS_BL1_1
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activate RSS_BL1_2 #Green
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RSS_BL1_2 -->> RSS_BL2: Validate, measure, load
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Rnote over RSS_BL1_2: RSS_BL2 measurement\n\ saved to a shared buffer
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RSS_BL1_2 -> RSS_BL2: Pass execution
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deactivate RSS_BL1_2
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activate RSS_BL2 #Green
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RSS_BL2 -->> RSS_S: Validate, measure, load
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RSS_BL2 -->> SCP_BL1: Validate, measure, load
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Rnote over RSS_BL2: RSS_S and SCP_BL1\n\ measurements saved\n\ to a shared buffer
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RSS_BL2 -> SCP_BL1: Release from reset
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activate SCP_BL1 #Green
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Rnote over RSS_BL2, SCP_BL1: MHU init between RSS and SCP
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Rnote over SCP_BL1: Configure memory
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Rnote over RSS_BL2: Waits for SCP
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SCP_BL1 --> RSS_BL2: Done
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RSS_BL2 -->> AP_BL1: Validate, measure, load
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Rnote over RSS_BL2: AP_BL1 measurement\n\ saved to a shared buffer
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RSS_BL2 -> AP_BL1: Release from reset
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activate AP_BL1 #Green
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RSS_BL2 -> RSS_S: Pass execution
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deactivate RSS_BL2
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activate RSS_S #Green
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Rnote over RSS_S: Measurements read from\n\ shared buffer and saved by\n\
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Measured Boot service to\n\ measurement slots.
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== RSS Runtime / AP Boot phase ==
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Rnote over RSS_S, AP_BL1: MHU init between RSS and AP
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Rnote over AP_BL1: Measure and load:\n\ FW_CONFIG\n\ TB_FW_CONFIG
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AP_BL1 -> RSS_S: Extend measurement
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Rnote over RSS_S: Measured Boot:\n\ store measurement
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AP_BL1 -->> AP_BL2: Validate, measure,load
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AP_BL1 -> RSS_S: Extend measurement
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Rnote over RSS_S: Measured Boot:\n\ store measurement
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AP_BL1 -> AP_BL2: Pass execution
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deactivate AP_BL1
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activate AP_BL2 #Green
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Rnote over AP_BL2: Measure and load:\n\ HW_CONFIG
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AP_BL2 -> RSS_S: Extend measurement
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Rnote over RSS_S: Measured Boot:\n\ store measurement
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AP_BL2 -->> AP_BL31: Validate, measure,load
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Rnote over AP_BL2: Measure and load:\n\ BL31
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AP_BL2 -> RSS_S: Extend measurement
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Rnote over RSS_S: Measured Boot:\n\ store measurement
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Rnote over AP_BL2: Measure and load:\n\ RMM
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AP_BL2 -> RSS_S: Extend measurement
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Rnote over RSS_S: Measured Boot:\n\ store measurement
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AP_BL2 -> AP_BL31: Pass execution
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deactivate AP_BL2
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activate AP_BL31 #Green
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== RSS / AP Runtime ==
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@enduml
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