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@startuml
box "BL2 common code"
participant bl2_entrypoint
participant bl2_main
end box
box "platform common code"
participant fconf
participant fconf_tbbr_getter
participant fconf_dyn_cfg_getter
end box
box "arm platform code" #LightBlue
participant arm_bl2_setup
participant arm_io_storage
participant arm_fconf_io
end box
== bl2 setup ==
bl2_entrypoint -> bl2_main : bl2_setup()
bl2_main -> arm_bl2_setup : bl2_early_platform_setup2(\n\t arg0, arg1, arg2, arg3)
note over arm_bl2_setup
arg0 = fw_config
arg1 = mem_layout
end note
arm_bl2_setup -> arm_bl2_setup : arm_bl2_early_platform_setup(\n\t fw_config, mem_layout)
activate arm_bl2_setup
arm_bl2_setup -> fconf: fconf_populate("FW_CONFIG", fw_config)
activate fconf
fconf -> fconf_dyn_cfg_getter: populate_dtb_registry(uintptr_t dtb)
note over fconf_dyn_cfg_getter: read dtb_registry properties from dtb
fconf_dyn_cfg_getter -> arm_bl2_setup
arm_bl2_setup -> fconf: FCONF_GET_PROPERTY(dyn_cfg, dtb, TB_FW_CONFIG_ID)
fconf -> fconf_dyn_cfg_getter: dyn_cfg_dtb_info_getter(TB_FW_CONFIG_ID)
fconf_dyn_cfg_getter -> arm_bl2_setup: tb_fw_config_info
arm_bl2_setup -> fconf: fconf_populate("TB_FW_CONFIG", tb_fw_config)
fconf -> fconf_tbbr_getter: fconf_populate_tbbr_dyn_config(uintptr_t dtb)
note over fconf_tbbr_getter: read tbbr properties from dtb
fconf -> arm_fconf_io: fconf_populate_arm_io_policies(uintptr_t dtb)
note over arm_fconf_io: read arm io propeties from dtb
deactivate fconf
arm_bl2_setup -> arm_io_storage : plat_arm_io_setup()
note over arm_io_storage: use populated properties
deactivate arm_bl2_setup
== bl2 main ==
@enduml
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