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 0 - Unknown 39 1 - System Firmware 40 2 - Device Firmware 41 3 - UEFI Driver 42 43What: /sys/firmware/efi/esrt/entries/entry$N/fw_class 44Date: February 2015 45Contact: Peter Jones <pjones@redhat.com> 46Description: This is the entry's guid, and will match the directory name. 47 48What: /sys/firmware/efi/esrt/entries/entry$N/fw_version 49Date: February 2015 50Contact: Peter Jones <pjones@redhat.com> 51Description: The version of the firmware currently installed. This is a 52 32-bit unsigned integer. 53 54What: /sys/firmware/efi/esrt/entries/entry$N/lowest_supported_fw_version 55Date: February 2015 56Contact: Peter Jones <pjones@redhat.com> 57Description: The lowest version of the firmware that can be installed. 58 59What: /sys/firmware/efi/esrt/entries/entry$N/capsule_flags 60Date: February 2015 61Contact: Peter Jones <pjones@redhat.com> 62Description: Flags that must be passed to UpdateCapsule() 63 64What: /sys/firmware/efi/esrt/entries/entry$N/last_attempt_version 65Date: February 2015 66Contact: Peter Jones <pjones@redhat.com> 67Description: The last firmware version for which an update was attempted. 68 69What: /sys/firmware/efi/esrt/entries/entry$N/last_attempt_status 70Date: February 2015 71Contact: Peter Jones <pjones@redhat.com> 72Description: The result of the last firmware update attempt for the 73 firmware resource entry. 74 0 - Success 75 1 - Insufficient resources 76 2 - Incorrect version 77 3 - Invalid format 78 4 - Authentication error 79 5 - AC power event 80 6 - Battery power event 81 82