sysfs-firmware-efi-esrt (3020B)
1What: /sys/firmware/efi/esrt/ 2Date: February 2015 3Contact: Peter Jones <pjones@redhat.com> 4Description: Provides userland access to read the EFI System Resource Table 5 (ESRT), a catalog of firmware for which can be updated with 6 the UEFI UpdateCapsule mechanism described in section 7.5 of 7 the UEFI Standard. 8Users: fwupdate - https://github.com/rhinstaller/fwupdate 9 10What: /sys/firmware/efi/esrt/fw_resource_count 11Date: February 2015 12Contact: Peter Jones <pjones@redhat.com> 13Description: The number of entries in the ESRT 14 15What: /sys/firmware/efi/esrt/fw_resource_count_max 16Date: February 2015 17Contact: Peter Jones <pjones@redhat.com> 18Description: The maximum number of entries that /could/ be registered 19 in the allocation the table is currently in. This is 20 really only useful to the system firmware itself. 21 22What: /sys/firmware/efi/esrt/fw_resource_version 23Date: February 2015 24Contact: Peter Jones <pjones@redhat.com> 25Description: The version of the ESRT structure provided by the firmware. 26 27What: /sys/firmware/efi/esrt/entries/entry<N>/ 28Date: February 2015 29Contact: Peter Jones <pjones@redhat.com> 30Description: Each ESRT entry is identified by a GUID, and each gets a 31 subdirectory under entries/ . 32 example: /sys/firmware/efi/esrt/entries/entry0/ 33 34What: /sys/firmware/efi/esrt/entries/entry<N>/fw_type 35Date: February 2015 36Contact: Peter Jones <pjones@redhat.com> 37Description: What kind of firmware entry this is: 38 39 == =============== 40 0 Unknown 41 1 System Firmware 42 2 Device Firmware 43 3 UEFI Driver 44 == =============== 45 46What: /sys/firmware/efi/esrt/entries/entry<N>/fw_class 47Date: February 2015 48Contact: Peter Jones <pjones@redhat.com> 49Description: This is the entry's guid, and will match the directory name. 50 51What: /sys/firmware/efi/esrt/entries/entry<N>/fw_version 52Date: February 2015 53Contact: Peter Jones <pjones@redhat.com> 54Description: The version of the firmware currently installed. This is a 55 32-bit unsigned integer. 56 57What: /sys/firmware/efi/esrt/entries/entry<N>/lowest_supported_fw_version 58Date: February 2015 59Contact: Peter Jones <pjones@redhat.com> 60Description: The lowest version of the firmware that can be installed. 61 62What: /sys/firmware/efi/esrt/entries/entry<N>/capsule_flags 63Date: February 2015 64Contact: Peter Jones <pjones@redhat.com> 65Description: Flags that must be passed to UpdateCapsule() 66 67What: /sys/firmware/efi/esrt/entries/entry<N>/last_attempt_version 68Date: February 2015 69Contact: Peter Jones <pjones@redhat.com> 70Description: The last firmware version for which an update was attempted. 71 72What: /sys/firmware/efi/esrt/entries/entry<N>/last_attempt_status 73Date: February 2015 74Contact: Peter Jones <pjones@redhat.com> 75Description: The result of the last firmware update attempt for the 76 firmware resource entry. 77 78 == ====================== 79 0 Success 80 1 Insufficient resources 81 2 Incorrect version 82 3 Invalid format 83 4 Authentication error 84 5 AC power event 85 6 Battery power event 86 == ====================== 87