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//proc/self/root/usr/libexec/microcode_ctl/reload_microcode
#! /bin/bash -efu # Trigger microcode reload with additional check for BDW-EP that can have # microcode reloaded only in case kernel has specific patches. # # SPDX-License-Identifier: CC0-1.0 get_model_string() { /usr/bin/printf "%s %02x-%02x-%02x" \ $(/bin/sed -rn '1,/^$/{ s/^vendor_id[[:space:]]*: (.*)$/\1/p; s/^cpu family[[:space:]]*: (.*)$/\1/p; s/^model[[:space:]]*: (.*)$/\1/p; s/^stepping[[:space:]]*: (.*)$/\1/p; }' /proc/cpuinfo) } CFG_BDW=intel-06-4f-01 CFG_SNB=intel-06-2d-07 CFG_SKL_SP=intel-06-55-04 CFG_SKL_UY=intel-06-4e-03 CFG_SKL_HS=intel-06-5e-03 CHECK_CAVEATS=/usr/libexec/microcode_ctl/check_caveats MC_FILE=/lib/firmware/microcode.dat model="$(get_model_string)" # Broadwell-EP/EX check if [ "x${model}" = "xGenuineIntel 06-4f-01" ]; then cc_out=$("$CHECK_CAVEATS" -m -c "$CFG_BDW") || exit 1 # Check that the configuration hasn't been skipped ok_cfgs=$(printf "%s" "$cc_out" | sed -n 's/^ok_cfgs //p') [ "x$ok_cfgs" = "x$CFG_BDW" ] || exit 1 MC_FILE=/lib/firmware/microcode-06-4f-01.dat fi # Sandy Bridge-E/EN/EP check if [ "x${model}" = "xGenuineIntel 06-2d-07" ]; then cc_out=$("$CHECK_CAVEATS" -m -c "$CFG_SNB" || :) # Check that the configuration hasn't been skipped ok_cfgs=$(printf "%s" "$cc_out" | sed -n 's/^ok_cfgs //p') # Contrary to BDW caveat, we have a fallback in microcode.dat [ "x$ok_cfgs" != "x$CFG_SNB" ] || { MC_FILE=/lib/firmware/microcode-06-2d-07.dat } fi # Skylake-SP/W/X check if [ "x${model}" = "xGenuineIntel 06-55-04" ]; then cc_out=$("$CHECK_CAVEATS" -m -c "$CFG_SKL_SP" || :) # Check that the configuration hasn't been skipped ok_cfgs=$(printf "%s" "$cc_out" | sed -n 's/^ok_cfgs //p') # Contrary to BDW caveat, we have a fallback in microcode.dat [ "x$ok_cfgs" != "x$CFG_SKL_SP" ] || { MC_FILE=/lib/firmware/microcode-06-55-04.dat } fi # Skylake-U/Y check if [ "x${model}" = "xGenuineIntel 06-4e-03" ]; then cc_out=$("$CHECK_CAVEATS" -m -c "$CFG_SKL_UY" || :) # Check that the configuration hasn't been skipped ok_cfgs=$(printf "%s" "$cc_out" | sed -n 's/^ok_cfgs //p') # Contrary to BDW caveat, we have a fallback in microcode.dat [ "x$ok_cfgs" != "x$CFG_SKL_UY" ] || { MC_FILE=/lib/firmware/microcode-06-4e-03.dat } fi # Skylake-H/S/Xeon E3 v5 check if [ "x${model}" = "xGenuineIntel 06-5e-03" ]; then cc_out=$("$CHECK_CAVEATS" -m -c "$CFG_SKL_HS" || :) # Check that the configuration hasn't been skipped ok_cfgs=$(printf "%s" "$cc_out" | sed -n 's/^ok_cfgs //p') # Contrary to BDW caveat, we have a fallback in microcode.dat [ "x$ok_cfgs" != "x$CFG_SKL_HS" ] || { MC_FILE=/lib/firmware/microcode-06-5e-03.dat } fi /sbin/microcode_ctl -Qu -f "$MC_FILE"
