3 # Copyright 2019 Peter Palfrader
5 # Permission is hereby granted, free of charge, to any person obtaining
6 # a copy of this software and associated documentation files (the
7 # "Software"), to deal in the Software without restriction, including
8 # without limitation the rights to use, copy, modify, merge, publish,
9 # distribute, sublicense, and/or sell copies of the Software, and to
10 # permit persons to whom the Software is furnished to do so, subject to
11 # the following conditions:
13 # The above copyright notice and this permission notice shall be
14 # included in all copies or substantial portions of the Software.
16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 cpu_sig="$(iucode_tool --scan-system 2>&1 | sed -e 's/.*with signature //')"
26 cpu_flags="$(cat /sys/devices/system/cpu/cpu0/microcode/processor_flags)"
27 avail_line="$(iucode_tool -l -s "$cpu_sig,$cpu_flags" -tb /lib/firmware/intel-ucode 2>&1 | grep "sig[[:space:]]*$cpu_sig")"
28 avail="$(echo "$avail_line" | sed -e 's/.*rev[[:space:]]*//; s/[,[:space:]].*//')"
30 if [ -z "$avail" ]; then
31 echo "UNKNOWN: did not find available ucode"
35 current=$(awk '$1 == "microcode" {print $3; exit}' < /proc/cpuinfo)
37 if [ -z "$current" ]; then
38 echo "UNKNOWN: did not learn current ucode"
42 if [ "$(printf "%d" "$avail")" != "$(printf "%d" "$current")" ]; then
43 echo "WARN: current ucode is $current while $avail is available"
46 echo "OK: current ucode $current matches available $avail"