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What: /sys/firmware/efi/esrt/
Date: February 2015
Contact: Peter Jones <pjones@redhat.com>
Description: Provides userland access to read the EFI System Resource Table
(ESRT), a catalog of firmware for which can be updated with
the UEFI UpdateCapsule mechanism described in section 7.5 of
the UEFI Standard.
Users: fwupdate - https://github.com/rhinstaller/fwupdate
What: /sys/firmware/efi/esrt/fw_resource_count
Date: February 2015
Contact: Peter Jones <pjones@redhat.com>
Description: The number of entries in the ESRT
What: /sys/firmware/efi/esrt/fw_resource_count_max
Date: February 2015
Contact: Peter Jones <pjones@redhat.com>
Description: The maximum number of entries that /could/ be registered
in the allocation the table is currently in. This is
really only useful to the system firmware itself.
What: /sys/firmware/efi/esrt/fw_resource_version
Date: February 2015
Contact: Peter Jones <pjones@redhat.com>
Description: The version of the ESRT structure provided by the firmware.
What: /sys/firmware/efi/esrt/entries/entry$N/
Date: February 2015
Contact: Peter Jones <pjones@redhat.com>
Description: Each ESRT entry is identified by a GUID, and each gets a
subdirectory under entries/ .
example: /sys/firmware/efi/esrt/entries/entry0/
What: /sys/firmware/efi/esrt/entries/entry$N/fw_type
Date: February 2015
Contact: Peter Jones <pjones@redhat.com>
Description: What kind of firmware entry this is:
0 - Unknown
1 - System Firmware
2 - Device Firmware
3 - UEFI Driver
What: /sys/firmware/efi/esrt/entries/entry$N/fw_class
Date: February 2015
Contact: Peter Jones <pjones@redhat.com>
Description: This is the entry's guid, and will match the directory name.
What: /sys/firmware/efi/esrt/entries/entry$N/fw_version
Date: February 2015
Contact: Peter Jones <pjones@redhat.com>
Description: The version of the firmware currently installed. This is a
32-bit unsigned integer.
What: /sys/firmware/efi/esrt/entries/entry$N/lowest_supported_fw_version
Date: February 2015
Contact: Peter Jones <pjones@redhat.com>
Description: The lowest version of the firmware that can be installed.
What: /sys/firmware/efi/esrt/entries/entry$N/capsule_flags
Date: February 2015
Contact: Peter Jones <pjones@redhat.com>
Description: Flags that must be passed to UpdateCapsule()
What: /sys/firmware/efi/esrt/entries/entry$N/last_attempt_version
Date: February 2015
Contact: Peter Jones <pjones@redhat.com>
Description: The last firmware version for which an update was attempted.
What: /sys/firmware/efi/esrt/entries/entry$N/last_attempt_status
Date: February 2015
Contact: Peter Jones <pjones@redhat.com>
Description: The result of the last firmware update attempt for the
firmware resource entry.
0 - Success
1 - Insufficient resources
2 - Incorrect version
3 - Invalid format
4 - Authentication error
5 - AC power event
6 - Battery power event
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