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https://github.com/ARM-software/arm-trusted-firmware.git
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e555787b66
Updated the document for BL1 and BL2 boot flow to capture below changes made in FCONF 1. Loading of fw_config and tb_fw_config images by BL1. 2. Population of fw_config and tb_fw_config by BL2. Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com> Change-Id: Ifea5c61d520ff1de834c279ce1759b53448303ba
49 lines
1.6 KiB
Text
49 lines
1.6 KiB
Text
@startuml
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box "BL2 common code"
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participant bl2_entrypoint
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participant bl2_main
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end box
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box "platform common code"
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participant fconf
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participant fconf_tbbr_getter
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participant fconf_dyn_cfg_getter
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end box
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box "arm platform code" #LightBlue
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participant arm_bl2_setup
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participant arm_io_storage
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participant arm_fconf_io
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end box
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== bl2 setup ==
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bl2_entrypoint -> bl2_main : bl2_setup()
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bl2_main -> arm_bl2_setup : bl2_early_platform_setup2(\n\t arg0, arg1, arg2, arg3)
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note over arm_bl2_setup
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arg0 = fw_config
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arg1 = mem_layout
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end note
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arm_bl2_setup -> arm_bl2_setup : arm_bl2_early_platform_setup(\n\t fw_config, mem_layout)
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activate arm_bl2_setup
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arm_bl2_setup -> fconf: fconf_populate("FW_CONFIG", fw_config)
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activate fconf
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fconf -> fconf_dyn_cfg_getter: populate_dtb_registry(uintptr_t dtb)
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note over fconf_dyn_cfg_getter: read dtb_registry properties from dtb
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fconf_dyn_cfg_getter -> arm_bl2_setup
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arm_bl2_setup -> fconf: FCONF_GET_PROPERTY(dyn_cfg, dtb, TB_FW_CONFIG_ID)
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fconf -> fconf_dyn_cfg_getter: dyn_cfg_dtb_info_getter(TB_FW_CONFIG_ID)
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fconf_dyn_cfg_getter -> arm_bl2_setup: tb_fw_config_info
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arm_bl2_setup -> fconf: fconf_populate("TB_FW_CONFIG", tb_fw_config)
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fconf -> fconf_tbbr_getter: fconf_populate_tbbr_dyn_config(uintptr_t dtb)
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note over fconf_tbbr_getter: read tbbr properties from dtb
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fconf -> arm_fconf_io: fconf_populate_arm_io_policies(uintptr_t dtb)
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note over arm_fconf_io: read arm io propeties from dtb
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deactivate fconf
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arm_bl2_setup -> arm_io_storage : plat_arm_io_setup()
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note over arm_io_storage: use populated properties
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deactivate arm_bl2_setup
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== bl2 main ==
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@enduml
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