Create UBI image
Create a 128MiB UBI image with 3 volumes: a static
pnor-ro-<versionId>, a dynamic pnor-rw-<versionId>,
and a dynamic pnor-prsv.
The pnor-ro-<versionId> is created from the squashfs file.
pnor-rw-<versionId> and pnor-prsv are both empty and size
16MiB and 2MiB respectively.
A future enhancement would be to pass in the size of the image.
Resolves openbmc/openbmc#2509
Change-Id: Ia8d9f3d8c72487eac06d7a5be5e856b1b07de7b1
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/generate-ubi b/generate-ubi
index 6299073..2633500 100755
--- a/generate-ubi
+++ b/generate-ubi
@@ -53,18 +53,88 @@
echo "Generating PNOR UBI image."
squashfs_file_name="pnor.xz.squashfs"
+manifest_file_name="MANIFEST"
# Scratch directory for untarring and config file
scratch_dir=`mktemp -d`
+squashfs_file=${scratch_dir}/${squashfs_file_name}
+manifest_file=${scratch_dir}/${manifest_file_name}
# Untar tarball
-tar -xvf ${tarball} -C ${scratch_dir} ${squashfs_file_name}
+tar -xvf ${tarball} -C ${scratch_dir} ${squashfs_file_name} ${manifest_file_name}
# All valid PNOR SquashFS Tarballs have a file named "pnor.xz.squashfs"
-if [ ! -f "${scratch_dir}/${squashfs_file_name}" ]; then
+if [ ! -f "${squashfs_file}" ]; then
echo "No \"${squashfs_file_name}\" file in the tarball!"
rm -r "${scratch_dir}"
exit 1
fi
+# Need the manifest file for calculating the version id
+if [ ! -f "${manifest_file}" ]; then
+ echo "No \"${manifest_file_name}\" file in the tarball!"
+ rm -r "${scratch_dir}"
+ exit 1
+fi
+
+# Flash page size in bytes
+FLASH_PAGE_SIZE="1"
+# kibibyte(KiB)
+FLASH_PEB_SIZE="64"
+# Future enhancement would be to allow this to be passed in
+# 128MiB (128 * 1024)
+FLASH_SIZE="131072"
+
+# Create UBI volume
+add_volume()
+{
+ config_file=$1
+ vol_id=$2
+ vol_type=$3
+ vol_name=$4
+ image=$5
+ vol_size=$6
+
+ echo \[$vol_name\] >> $config_file
+ echo mode=ubi >> $config_file
+ if [ ! -z $image ]; then
+ echo image=$image >> $config_file
+ fi
+ echo vol_type=$vol_type >> $config_file
+ echo vol_name=$vol_name >> $config_file
+ echo vol_id=$vol_id >> $config_file
+ if [ ! -z $vol_size ]; then
+ echo vol_size=$vol_size >> $config_file
+ fi
+}
+
+# Create an image with all 1's
+mk_nor_image()
+{
+ image_dst=$1
+ image_size_kb=$2
+ dd if=/dev/zero bs=1k count=$image_size_kb | tr '\000' '\377' > $image_dst
+}
+
+# Used to temporary hold the UBI volume
+tmpfile=$(mktemp ${scratch_dir}/ubinized.XXXXXX)
+
+# Configuration file used to create UBI image
+config_file=${scratch_dir}/ubinize-PNOR.cfg
+
+# The version is listed in the MANIFEST file as "version=v1.99.10-19"
+# Use the version to calculate the version id, a unique 8 hexadecimal digit id
+version_id=$(sed -ne '/version=/ {s/version=//;p}' ${manifest_file} | head -n1 | \
+ tr -d '\n' | sha512sum | cut -b 1-8)
+
+add_volume $config_file 0 static pnor-ro-${version_id} ${squashfs_file}
+add_volume $config_file 1 dynamic pnor-prsv "" 2MiB
+add_volume $config_file 2 dynamic pnor-rw-${version_id} "" 16MiB
+
+# Build the UBI image
+ubinize -p ${FLASH_PEB_SIZE}KiB -m ${FLASH_PAGE_SIZE} -o ${tmpfile} $config_file
+mk_nor_image ${outfile} ${FLASH_SIZE}
+dd bs=1k conv=notrunc seek=0 if=${tmpfile} of=${outfile}
+
+echo "PNOR UBI image at ${outfile}"
rm -r "${scratch_dir}"