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Diffstat (limited to 'Documentation/ABI/testing/sysfs-firmware-efi-esrt')
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diff --git a/Documentation/ABI/testing/sysfs-firmware-efi-esrt b/Documentation/ABI/testing/sysfs-firmware-efi-esrt new file mode 100644 index 0000000000..4c2d440487 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-firmware-efi-esrt @@ -0,0 +1,87 @@ +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 + == ====================== + |