enh: fwdb: use both Intel GitHub repo and MCEdb to build our database
This commit is contained in:
Stéphane Lesimple
parent
6abe1bc62b
commit
8c84c0ba17
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@ -22,6 +22,7 @@ exit_cleanup()
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[ -n "$kerneltmp" ] && [ -f "$kerneltmp" ] && rm -f "$kerneltmp"
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[ -n "$kerneltmp2" ] && [ -f "$kerneltmp2" ] && rm -f "$kerneltmp2"
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[ -n "$mcedb_tmp" ] && [ -f "$mcedb_tmp" ] && rm -f "$mcedb_tmp"
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[ -n "$intel_tmp" ] && [ -f "$intel_tmp" ] && rm -rf "$intel_tmp"
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[ "$mounted_debugfs" = 1 ] && umount /sys/kernel/debug 2>/dev/null
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[ "$mounted_procfs" = 1 ] && umount "$procfs" 2>/dev/null
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[ "$insmod_cpuid" = 1 ] && rmmod cpuid 2>/dev/null
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@ -708,14 +709,13 @@ show_header()
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mcedb_cache="$HOME/.mcedb"
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update_mcedb()
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{
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# We're using MCE.db from the excellent platomav's MCExtractor project
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show_header
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if [ -r "$mcedb_cache" ]; then
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previous_mcedb_revision=$(awk '/^# %%% MCEDB / { print $4 }' "$mcedb_cache")
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previous_dbversion=$(awk '/^# %%% MCEDB / { print $4 }' "$mcedb_cache")
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fi
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# first download the database
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# first, download the MCE.db from the excellent platomav's MCExtractor project
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mcedb_tmp="$(mktemp /tmp/mcedb-XXXXXX)"
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mcedb_url='https://github.com/platomav/MCExtractor/raw/master/MCE.db'
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_info_nol "Fetching MCE.db from the MCExtractor project... "
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@ -735,8 +735,29 @@ update_mcedb()
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fi
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echo DONE
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# now extract contents using sqlite
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_info_nol "Extracting data... "
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# second, get the Intel firmwares from GitHub
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intel_tmp="$(mktemp -d /tmp/intelfw-XXXXXX)"
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intel_url="https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/archive/master.zip"
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_info_nol "Fetching Intel firmwares... "
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## https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files.git
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if command -v wget >/dev/null 2>&1; then
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wget -q "$intel_url" -O "$intel_tmp/fw.zip"; ret=$?
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elif command -v curl >/dev/null 2>&1; then
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curl -sL "$intel_url" -o "$intel_tmp/fw.zip"; ret=$?
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elif command -v fetch >/dev/null 2>&1; then
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fetch -q "$intel_url" -o "$intel_tmp/fw.zip"; ret=$?
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else
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echo ERROR "please install one of \`wget\`, \`curl\` of \`fetch\` programs"
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return 1
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fi
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if [ "$ret" != 0 ]; then
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echo ERROR "error $ret while downloading Intel firmwares"
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return $ret
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fi
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echo DONE
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# now extract MCEdb contents using sqlite
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_info_nol "Extracting MCEdb data... "
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if ! command -v sqlite3 >/dev/null 2>&1; then
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echo ERROR "please install the \`sqlite3\` program"
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return 1
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@ -747,17 +768,68 @@ update_mcedb()
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echo ERROR "downloaded file seems invalid"
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return 1
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fi
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echo OK "MCExtractor database revision $mcedb_revision dated $mcedb_date"
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if [ -n "$previous_mcedb_revision" ]; then
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if [ "$previous_mcedb_revision" = "v$mcedb_revision" ]; then
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echo "We already have this version locally, no update needed"
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[ "$1" != builtin ] && return 0
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fi
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# parse Intel firmwares to get their versions
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_info_nol "Integrating Intel firmwares data to db... "
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if ! command -v unzip >/dev/null 2>&1; then
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echo ERROR "please install the \`unzip\` program"
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return 1
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fi
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echo "# Spectre & Meltdown Checker" > "$mcedb_cache"
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echo "# %%% MCEDB v$mcedb_revision - $mcedb_date" >> "$mcedb_cache"
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sqlite3 "$mcedb_tmp" "select '# I,0x'||cpuid||',0x'||version||','||max(yyyymmdd) from Intel group by cpuid order by cpuid asc; select '# A,0x'||cpuid||',0x'||version||','||max(yyyymmdd) from AMD group by cpuid order by cpuid asc" | grep -v '^# .,0x00000000,' >> "$mcedb_cache"
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echo OK "local version updated"
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( cd "$intel_tmp" && unzip fw.zip >/dev/null; )
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if ! [ -d "$intel_tmp/Intel-Linux-Processor-Microcode-Data-Files-master/intel-ucode" ]; then
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echo ERROR "expected the 'intel-ucode' folder in the downloaded zip file"
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return 1
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fi
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if ! command -v iucode_tool >/dev/null 2>&1; then
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if ! command -v iucode-tool >/dev/null 2>&1; then
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echo ERROR "please install the \`iucode-tool\` program"
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return 1
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else
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iucode_tool="iucode-tool"
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fi
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else
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iucode_tool="iucode_tool"
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fi
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# 079/001: sig 0x000106c2, pf_mask 0x01, 2009-04-10, rev 0x0217, size 5120
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# 078/004: sig 0x000106ca, pf_mask 0x10, 2009-08-25, rev 0x0107, size 5120
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$iucode_tool -l "$intel_tmp/Intel-Linux-Processor-Microcode-Data-Files-master/intel-ucode" | grep -wF sig | while read -r _line
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do
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_line=$( echo "$_line" | tr -d ',')
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_cpuid=$( echo "$_line" | awk '{print $3}')
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_cpuid=$(( _cpuid ))
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_cpuid=$(printf "0x%08X" "$_cpuid")
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_date=$( echo "$_line" | awk '{print $6}' | tr -d '-')
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_version=$(echo "$_line" | awk '{print $8}')
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_version=$(( _version ))
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_version=$(printf "0x%08X" "$_version")
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_sqlstm="$(printf "INSERT INTO Intel (cpuid,version,yyyymmdd) VALUES (\"%s\",\"%s\",\"%s\");" "$(printf "%08X" "$_cpuid")" "$(printf "%08X" "$_version")" "$_date")"
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sqlite3 "$mcedb_tmp" "$_sqlstm"
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done
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_intel_latest_date=$(sqlite3 "$mcedb_tmp" "SELECT yyyymmdd from Intel ORDER BY yyyymmdd DESC LIMIT 1;")
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echo DONE "(version $_intel_latest_date)"
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dbdate=$(echo "$mcedb_date" | tr -d '/')
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if [ "$dbdate" -lt "$_intel_latest_date" ]; then
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dbdate="$_intel_latest_date"
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fi
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dbversion="$mcedb_revision.$dbdate+i$_intel_latest_date"
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if [ "$1" != builtin ] && [ -n "$previous_dbversion" ] && [ "$previous_dbversion" = "v$dbversion" ]; then
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echo "We already have this version locally, no update needed"
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return 0
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fi
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_info_nol "Building local database... "
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{
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echo "# Spectre & Meltdown Checker";
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echo "# %%% MCEDB v$dbversion";
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sqlite3 "$mcedb_tmp" "SELECT '# I,0x'||t1.cpuid||',0x'||MAX(t1.version)||','||t1.yyyymmdd FROM Intel AS t1 LEFT OUTER JOIN Intel AS t2 ON t2.cpuid=t1.cpuid AND t2.yyyymmdd > t1.yyyymmdd WHERE t2.yyyymmdd IS NULL GROUP BY t1.cpuid ORDER BY t1.cpuid ASC;" | grep -v '^# .,0x00000000,';
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sqlite3 "$mcedb_tmp" "SELECT '# A,0x'||t1.cpuid||',0x'||MAX(t1.version)||','||t1.yyyymmdd FROM AMD AS t1 LEFT OUTER JOIN AMD AS t2 ON t2.cpuid=t1.cpuid AND t2.yyyymmdd > t1.yyyymmdd WHERE t2.yyyymmdd IS NULL GROUP BY t1.cpuid ORDER BY t1.cpuid ASC;" | grep -v '^# .,0x00000000,';
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} > "$mcedb_cache"
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echo DONE "(version $dbversion)"
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if [ "$1" = builtin ]; then
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newfile=$(mktemp /tmp/smc-XXXXXX)
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