Linux Firmware API

• Introduction
  • Types of firmware requests
• Firmware API core features
  • Firmware search paths
  • Built-in firmware
  • Firmware cache
  • Direct filesystem lookup
    • Firmware and initramfs
  • Fallback mechanisms
    • Justifying the firmware fallback mechanism
    • Types of fallback mechanisms
    • Firmware sysfs loading facility
      • firmware_fallback_sysfs
        • firmware_fallback_sysfs()
    • Firmware kobject uevent fallback mechanism
    • Firmware custom fallback mechanism
    • Firmware fallback timeout
    • EFI embedded firmware fallback mechanism
      • efi_embedded_fw_desc
      • Example how to check for and extract embedded firmware
  • Firmware lookup order
  • Firmware Guidelines
• Unified Extensible Firmware Interface (UEFI) Support
  • UEFI stub library functions
    • efi_get_memory_map()
    • efi_allocate_pages()
    • efi_free()
  • UEFI Common Platform Error Record (CPER) functions
    • cper_print_bits()
    • cper_bits_to_str()
• request_firmware API
  • Synchronous firmware requests
    • request_firmware
      • request_firmware()
    • firmware_request_nowarn
      • firmware_request_nowarn()
    • firmware_request_platform
      • firmware_request_platform()
    • request_firmware_direct
      • request_firmware_direct()
    • request_firmware_into_buf
      • request_firmware_into_buf()
  • Asynchronous firmware requests
    • request_firmware_nowait
      • request_firmware_nowait()
  • Special optimizations on reboot
    • firmware_request_cache()
      • firmware_request_cache()
  • request firmware API expected driver use
• Firmware Upload API
  • Register for firmware upload
    • firmware_upload_register
      • firmware_upload_register()
    • firmware_upload_unregister
      • firmware_upload_unregister()
    • Firmware Upload Ops
      • fw_upload_ops
    • Firmware Upload Progress Codes
      • fw_upload_prog
    • Firmware Upload Error Codes
      • fw_upload_err
  • Sysfs Attributes
• Other Firmware Interfaces
  • DMI Interfaces
    • dmi_check_system()
    • dmi_first_match()
    • dmi_get_system_info()
    • dmi_name_in_vendors()
    • dmi_find_device()
    • dmi_get_date()
    • dmi_get_bios_year()
    • dmi_walk()
    • dmi_match()
    • dmi_memdev_type()
    • dmi_memdev_handle()
  • EDD Interfaces
    • edd_show_raw_data()
    • edd_release()
    • edd_dev_is_type()
    • edd_get_pci_dev()
    • edd_init()
  • Generic System Framebuffers Interface
    • sysfb_disable()
    • sysfb_handles_screen_info()
  • Intel Stratix10 SoC Service Layer
    • stratix10_svc_command_code
    • stratix10_svc_client_msg
    • stratix10_svc_command_config_type
    • stratix10_svc_cb_data
    • stratix10_svc_client
    • stratix10_svc_request_channel_byname()
    • stratix10_svc_add_async_client()
    • stratix10_svc_remove_async_client()
    • stratix10_svc_async_send()
    • stratix10_svc_async_poll()
    • stratix10_svc_async_done()
    • stratix10_svc_free_channel()
    • stratix10_svc_send()
    • stratix10_svc_done()
    • stratix10_svc_allocate_memory()
    • stratix10_svc_free_memory()