| #!/bin/bash |
| set -eo pipefail |
| |
| help=$'Generate Tarball with PNOR SquashFS image and MANIFEST Script |
| |
| Generates a PNOR SquashFS image from the PNOR image |
| Creates a MANIFEST for image verification and recreation |
| Packages the SquashFS image and MANIFEST together in a tarball |
| |
| usage: generate-squashfs [OPTION] <PNOR FILE>... |
| |
| Options: |
| -f, --file <file> Specify destination file. Defaults to |
| `pwd`/<PNOR FILE>.pnor.squashfs.tar if unspecified. |
| (For example, "generate-squashfs my.pnor" would |
| generate `pwd`/my.pnor.squashfs.tar output.) |
| -h, --help Display this help text and exit. |
| ' |
| # Reference the ffs structures at: |
| # https://github.com/open-power/hostboot/blob/master/src/usr/pnor/common/ffs_hb.H |
| # https://github.com/open-power/hostboot/blob/master/src/usr/pnor/ffs.h |
| let ffs_entry_size=128 |
| let vercheck_offset=112 |
| outfile="" |
| declare -a partitions=() |
| tocfile="pnor.toc" |
| |
| while [[ $# -gt 0 ]]; do |
| key="$1" |
| case $key in |
| -f|--file) |
| outfile="$2" |
| shift 2 |
| ;; |
| -h|--help) |
| echo "$help" |
| exit |
| ;; |
| *) |
| pnorfile="$1" |
| shift 1 |
| ;; |
| esac |
| done |
| |
| if [ ! -f "${pnorfile}" ]; then |
| echo "Please enter a valid PNOR file." |
| echo "$help" |
| exit 1 |
| fi |
| |
| if [[ -z $outfile ]]; then |
| if [[ ${pnorfile##*.} == "pnor" ]]; then |
| outfile=`pwd`/${pnorfile##*/}.squashfs.tar |
| else |
| outfile=`pwd`/${pnorfile##*/}.pnor.squashfs.tar |
| fi |
| else |
| if [[ $outfile != /* ]]; then |
| outfile=`pwd`/$outfile |
| fi |
| fi |
| |
| scratch_dir=`mktemp -d` |
| |
| echo "Parsing PNOR TOC..." |
| |
| pflash --partition=part --read=${scratch_dir}/part -F ${pnorfile} |
| pflash --partition=VERSION --read=${scratch_dir}/VERSION -F ${pnorfile} |
| { |
| version=$(head -n 1 ${scratch_dir}/VERSION) |
| echo "version=$version" |
| extended_version=$(echo $(tail -n +2 ${scratch_dir}/VERSION)|tr ' ' ',') |
| echo "extended_version=$extended_version" |
| while read line; do |
| if [[ $line == "ID="* ]]; then |
| # This line looks like |
| # "ID=05 MVPD 000d9000..00169000 (actual=00090000) [ECC]" |
| read -r -a fields <<< "$line" |
| |
| id=${fields[0]##*=} |
| offset=$((${ffs_entry_size} * 10#${id} + ${vercheck_offset})) |
| vercheck=$(xxd -p -l 0x1 -seek ${offset} ${scratch_dir}/part) |
| export flags=$(pflash --detail=$((10#$id)) -F ${pnorfile} | grep "\[" | |
| sed 's/....$//' | tr '\n' ',' | sed 's/.$//') |
| if [[ $flags != "" ]]; then |
| flags=,$flags |
| fi |
| |
| if [[ $(echo $flags | grep "READONLY") == "" && |
| $(echo $flags | grep "PRESERVED") == "" ]]; then |
| flags=$flags,READWRITE |
| fi |
| |
| # Need the partition ID, name, start location, end location, and flags |
| echo "partition${id}=${fields[1]},${fields[2]/../,},${vercheck}${flags}" |
| |
| # Save the partition name |
| partitions+=(${fields[1]}) |
| fi |
| # Don't need the BACKUP_PART partition |
| done < <(pflash --info -F ${pnorfile} | grep -v "BACKUP") |
| } > ${scratch_dir}/${tocfile} |
| |
| for partition in "${partitions[@]}"; do |
| echo "Reading ${partition}..." |
| pflash --partition=${partition} \ |
| --read=${scratch_dir}/${partition} \ |
| -F ${pnorfile} |
| done |
| |
| echo "Creating SquashFS image..." |
| cd "${scratch_dir}" |
| mksquashfs ${tocfile} ${partitions[*]} pnor.xz.squashfs |
| |
| echo "Creating MANIFEST for the image" |
| manifest_location="MANIFEST" |
| echo -e "purpose=xyz.openbmc_project.Software.Version.VersionPurpose.Host\nversion=$version\n\ |
| extended_version=$extended_version" >> $manifest_location |
| |
| echo "Generating tarball to contain the SquashFS image and its MANIFEST" |
| tar -cvf $outfile $manifest_location pnor.xz.squashfs |
| |
| echo "SquashFSTarball at ${outfile}" |
| rm -r "${scratch_dir}" |