How to know which firmware is loaded by kernel?

Question

I have an Intel wireless card driven by iwlwifi, and I can see the following message in dmesg:

iwlwifi 0000:03:00.0: loaded firmware version 17.168.5.3 build 42301

But how do I know which firmware is loaded?

Answer 1

The iwlwifi driver loads the microcode file for your wifi adapter at startup. If you want to know which one of the /usr/lib/firmware/.ucode* files is loaded you can use something like this script

run:

./ucode.py /usr/lib/firmware/*.ucode

and compare the output to your dmesg message.

I had to make some minor adjustments to that script... remove the comma on line 28, print formatting (lines 28, 34, 42, 46, 47) and also on line 42:

-  print ("ver %u.%u.%u.%u%s") % (major, minor, api, serial, readable)
+  print ("ver %u.%u.%u.%u%s" % (major, minor, api, serial, readable))