1@startuml
2
3box "BL2 common code"
4	participant bl2_entrypoint
5	participant bl2_main
6end box
7
8box "platform common code"
9	participant fconf
10	participant fconf_tbbr_getter
11participant fconf_dyn_cfg_getter
12end box
13
14box "arm platform code" #LightBlue
15	participant arm_bl2_setup
16	participant arm_io_storage
17	participant arm_fconf_io
18end box
19
20== bl2 setup ==
21bl2_entrypoint -> bl2_main : bl2_setup()
22bl2_main -> arm_bl2_setup : bl2_early_platform_setup2(\n\t arg0, arg1, arg2, arg3)
23note over arm_bl2_setup
24	arg0 = fw_config
25	arg1 = mem_layout
26end note
27arm_bl2_setup -> arm_bl2_setup : arm_bl2_early_platform_setup(\n\t fw_config, mem_layout)
28activate arm_bl2_setup
29	arm_bl2_setup -> fconf: fconf_populate("FW_CONFIG", fw_config)
30	activate fconf
31		fconf -> fconf_dyn_cfg_getter: populate_dtb_registry(uintptr_t dtb)
32		note over fconf_dyn_cfg_getter: read dtb_registry properties from dtb
33		fconf_dyn_cfg_getter -> arm_bl2_setup
34		arm_bl2_setup -> fconf: FCONF_GET_PROPERTY(dyn_cfg, dtb, TB_FW_CONFIG_ID)
35		fconf -> fconf_dyn_cfg_getter: dyn_cfg_dtb_info_getter(TB_FW_CONFIG_ID)
36		fconf_dyn_cfg_getter -> arm_bl2_setup: tb_fw_config_info
37		arm_bl2_setup -> fconf: fconf_populate("TB_FW_CONFIG", tb_fw_config)
38		fconf -> fconf_tbbr_getter: fconf_populate_tbbr_dyn_config(uintptr_t dtb)
39		note over fconf_tbbr_getter: read tbbr properties from dtb
40		fconf -> arm_fconf_io: fconf_populate_arm_io_policies(uintptr_t dtb)
41		note over arm_fconf_io: read arm io propeties from dtb
42	deactivate fconf
43	arm_bl2_setup -> arm_io_storage : plat_arm_io_setup()
44	note over arm_io_storage: use populated properties
45deactivate arm_bl2_setup
46
47== bl2 main ==
48
49@enduml
50