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|
#!/bin/bash
set -eo pipefail
help=$'Generate Tarball with SquashFS image and MANIFEST Script
Generates a SquashFS image from the PNOR image
Creates a MANIFEST for image verification
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}"
|
