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arm-trusted-firmware
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io_framework_usage_overview.puml

io_framework_usage_overview.puml 1.9 KB
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  1. @startuml
    2. 

  2. 

  3. participant bl_common
    4. 

  4. participant arm_io_storage
    5. 

  5. participant io_storage
    6. 

  6. 

  7. == Platform Setup ==
    8. 

  8. 

  9. bl1_main -> xxx_bl1_setup : bl1_platform_setup()
    10. 

  10. xxx_bl1_setup -> arm_io_storage : plat_arm_io_setup()
    11. 

  11. 

  12. arm_io_storage -> arm_io_storage : arm_io_setup()
    13. 

  13. ref over arm_io_storage, io_storage : io device registration
    14. 

  14. 

  15. == Get Image ==
    16. 

  16. bl1_main -> xxx_bl1_setup : bl1_plat_get_next_image_id()
    17. 

  17. bl1_main <-- xxx_bl1_setup : BL2_IMAGE_ID
    18. 

  18. 

  19. bl1_main -> bl1_main : bl1_load_bl2()
    20. 

  20. activate bl1_main
    21. 

  21. bl1_main -> plat_bl1_common : bl1_plat_get_image_desc(BL2_IMAGE_ID)
    22. 

  22. bl1_main <-- plat_bl1_common : BL2_IMAGE_DESC
    23. 

  23. 

  24. bl1_main -> plat_bl1_common : bl1_plat_handle_pre_image_load(BL2_IMAGE_ID)
    25. 

  25. 

  26. bl1_main -> bl_common : load_auth_image(BL2_IMAGE_ID, image_info)
    27. 

  27. activate bl_common
    28. 

  28. bl_common -> bl_common : load_auth_image_internal(BL2_IMAGE_ID, image_info, is_parent_image)
    29. 

  29. activate bl_common
    30. 

  30. bl_common -> bl_common : load_image(BL2_IMAGE_ID, image_info)
    31. 

  31. activate bl_common
    32. 

  32. bl_common -> arm_io_storage : plat_get_image_source(BL2_IMAGE_ID, &dev_handle, &image_spec)
    33. 

  33. ref over arm_io_storage, io_storage : init and check device (BL2_IMAGE_ID)
    34. 

  34. bl_common <-- arm_io_storage : dev_handle
    35. 

  35. 

  36. bl_common -> io_storage : io_open(dev_handle, image_spec, &image_handle)
    37. 

  37. ref over io_storage : io_open() on fip device
    38. 

  38. bl_common <-- io_storage : image_handle
    39. 

  39. bl_common -> io_storage : io_size(image_handle, &image_size)
    40. 

  40. ref over io_storage : io_size() on fip device
    41. 

  41. bl_common -> io_storage : io_read(image_handle, image_base, image_size, &bytes_read)
    42. 

  42. ref over io_storage : io_read() on fip device
    43. 

  43. bl_common -> io_storage : io_close(image_handle)
    44. 

  44. ref over io_storage : io_close() on fip device
    45. 

  45. bl_common -> io_storage : io_dev_close(dev_handle)
    46. 

  46. ref over io_storage : io_dev_close() on fip device
    47. 

  47. 

  48. deactivate bl_common
    49. 

  49. deactivate bl_common
    50. 

  50. deactivate bl_common
    51. 

  51. 

  52. == Prepare Next Image ==
    53. 

  53. bl1_main -> plat_bl1_common : bl1_plat_handle_post_image_load(BL2_IMAGE_ID)
    54. 

  54. 

  55. deactivate bl1_main
    56. 

  56. 

  57. == Jump to next Image ==
    58. 

  58. 

  59. @enduml
    60.