peter/spectre-meltdown-checker
1
0
Fork 0
mirror of https://github.com/speed47/spectre-meltdown-checker.git synced 2025-10-31 20:50:55 +01:00
Code Issues Projects Releases Wiki Activity

enh: fwdb: use both Intel GitHub repo and MCEdb to build our database

Browse Source
This commit is contained in:
Stéphane Lesimple
2019-11-23 12:39:59 +01:00
parent 6abe1bc62b
commit 8c84c0ba17
1 changed files with 86 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

100
spectre-meltdown-checker.sh
View File

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