PNOR: Mount ubi volumes on BMC reboot

- Create a static service file that will be
  run on all BMC boot to remount the ubi volumes.
- Read the ubinfo for all available volumes from
  obmc/flash-bios script.
- Re-Mount the available volumes on /media/ dir
  using the volume names.

Resolves openbmc/openbmc#1848

Change-Id: I9e336340a04f335d034438406e5f0fff9b21d1b9
Signed-off-by: Saqib Khan <khansa@us.ibm.com>

3 files changed, 46 insertions, 0 deletions

diff --git a/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/flash/openpower-software-manager.bb b/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/flash/openpower-software-manager.bb
index 14f7d1083..1aacf2881 100644
--- a/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/flash/openpower-software-manager.bb
+++ b/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/flash/openpower-software-manager.bb
@@ -45,4 +45,5 @@ SYSTEMD_SERVICE_${PN} += " \
         obmc-flash-bios-ubiumount-prsv.service \
         obmc-flash-bios-ubiumount-rw@.service \
         obmc-flash-bios-squashfsmount@.service \
+        obmc-flash-bios-ubiremount.service \
         "
diff --git a/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/flash/openpower-software-manager/obmc-flash-bios b/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/flash/openpower-software-manager/obmc-flash-bios
index 226527524..dffd29871 100644
--- a/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/flash/openpower-software-manager/obmc-flash-bios
+++ b/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/flash/openpower-software-manager/obmc-flash-bios
@@ -128,6 +128,34 @@ umount_ubi() {
   fi
 }
 
+remount_ubi() {
+  pnormtd="$(findmtd pnor)"
+  pnor="${pnormtd#mtd}"
+  # Get information on all ubi volumes
+  ubinfo=$(ubinfo -d ${pnor})
+  presentVolumes=${ubinfo##*:}
+  IFS=', ' read -r -a array <<< "$presentVolumes"
+  for element in ${array[@]};
+  do
+    elementProperties=$(ubinfo -d $pnor -n $element)
+    # Get ubi volume name by getting rid of additional properties
+    name=${elementProperties#*Name:}
+    name="${name%Character*}"
+    name="$(echo -e "${name}" | tr -d '[:space:]')"
+
+    if [[ ${name} == pnor-prsv ]] || [[ ${name} == pnor-rw* ]] || [[ ${name} == pnor-ro* ]]; then
+      mountdir="/media/${name}"
+      if [[ ${name} == pnor-ro* ]]
+      then
+        ubiblock --create /dev/ubi${pnor}_${element}
+        mount -t squashfs -o ro "/dev/ubiblock${pnor}_${element}" "${mountdir}"
+      else
+        mount -t ubifs "ubi${pnor}:${name}" "${mountdir}"
+      fi
+    fi
+  done
+}
+
 case "$1" in
   ubiattach)
     attach_ubi
@@ -145,6 +173,9 @@ case "$1" in
     name="$2"
     umount_ubi
     ;;
+  ubiremount)
+    remount_ubi
+    ;;
   *)
     echo "Invalid argument"
     exit 1
diff --git a/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/flash/openpower-software-manager/obmc-flash-bios-ubiremount.service b/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/flash/openpower-software-manager/obmc-flash-bios-ubiremount.service
new file mode 100644
index 000000000..fd839f351
--- /dev/null
+++ b/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/flash/openpower-software-manager/obmc-flash-bios-ubiremount.service
@@ -0,0 +1,14 @@
+[Unit]
+Description=Remount the squashfs and ubi volumes after a reboot
+Requires=obmc-flash-bios-ubiattach.service
+After=obmc-flash-bios-ubiattach.service
+Wants=org.open_power.Software.Host.Updater.service
+Before=org.open_power.Software.Host.Updater.service
+
+[Service]
+Type=oneshot
+RemainAfterExit=no
+ExecStart={sbindir}/obmc-flash-bios ubiremount
+
+[Install]
+WantedBy=multi-user.target