1 .. SPDX-License-Identifier: GPL-2.0+ 2 3 ===================================== 4 Meta Platforms Host Network Interface 5 ===================================== 6 7 Firmware Versions 8 ----------------- 9 10 fbnic has three components stored on the flash which are provided in one PLDM 11 image: 12 13 1. fw - The control firmware used to view and modify firmware settings, request 14 firmware actions, and retrieve firmware counters outside of the data path. 15 This is the firmware which fbnic_fw.c interacts with. 16 2. bootloader - The firmware which validate firmware security and control basic 17 operations including loading and updating the firmware. This is also known 18 as the cmrt firmware. 19 3. undi - This is the UEFI driver which is based on the Linux driver. 20 21 fbnic stores two copies of these three components on flash. This allows fbnic 22 to fall back to an older version of firmware automatically in case firmware 23 fails to boot. Version information for both is provided as running and stored. 24 The undi is only provided in stored as it is not actively running once the Linux 25 driver takes over. 26 27 devlink dev info provides version information for all three components. In 28 addition to the version the hg commit hash of the build is included as a 29 separate entry.
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