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dbeace1027
Add uml sequence and class diagram to illustrate the behavior of the storage abstraction layer. Change-Id: I338262729f8034cc3d3eea1d0ce19cca973a91bb Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>
59 lines
2 KiB
Text
59 lines
2 KiB
Text
@startuml
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participant bl_common order 1
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participant arm_io_storage order 2
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participant io_storage order 3
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== Platform Setup ==
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bl1_main -> xxx_bl1_setup : bl1_platform_setup()
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xxx_bl1_setup -> arm_io_storage : plat_arm_io_setup()
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arm_io_storage -> arm_io_storage : arm_io_setup()
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ref over arm_io_storage, io_storage : io device registration
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== Get Image ==
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bl1_main -> xxx_bl1_setup : bl1_plat_get_next_image_id()
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bl1_main <-- xxx_bl1_setup : BL2_IMAGE_ID
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bl1_main -> bl1_main : bl1_load_bl2()
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activate bl1_main
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bl1_main -> plat_bl1_common : bl1_plat_get_image_desc(BL2_IMAGE_ID)
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bl1_main <-- plat_bl1_common : BL2_IMAGE_DESC
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bl1_main -> plat_bl1_common : bl1_plat_handle_pre_image_load(BL2_IMAGE_ID)
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bl1_main -> bl_common : load_auth_image(BL2_IMAGE_ID, image_info)
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activate bl_common
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bl_common -> bl_common : load_auth_image_internal(BL2_IMAGE_ID, image_info, is_parent_image)
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activate bl_common
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bl_common -> bl_common : load_image(BL2_IMAGE_ID, image_info)
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activate bl_common
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bl_common -> arm_io_storage : plat_get_image_source(BL2_IMAGE_ID, &dev_handle, &image_spec)
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ref over arm_io_storage, io_storage : init and check device (BL2_IMAGE_ID)
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bl_common <-- arm_io_storage : dev_handle
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bl_common -> io_storage : io_open(dev_handle, image_spec, &image_handle)
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ref over io_storage : io_open() on fip device
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bl_common <-- io_storage : image_handle
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bl_common -> io_storage : io_size(image_handle, &image_size)
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ref over io_storage : io_size() on fip device
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bl_common -> io_storage : io_read(image_handle, image_base, image_size, &bytes_read)
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ref over io_storage : io_read() on fip device
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bl_common -> io_storage : io_close(image_handle)
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ref over io_storage : io_close() on fip device
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bl_common -> io_storage : io_dev_close(dev_handle)
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ref over io_storage : io_dev_close() on fip device
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deactivate bl_common
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deactivate bl_common
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deactivate bl_common
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== Prepare Next Image ==
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bl1_main -> plat_bl1_common : bl1_plat_handle_post_image_load(BL2_IMAGE_ID)
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deactivate bl1_main
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== Jump to next Image ==
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@enduml
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