diff --git a/meta/classes/package.bbclass b/meta/classes/package.bbclass
index 9040eb40ba..65e65715ea 100644
--- a/meta/classes/package.bbclass
+++ b/meta/classes/package.bbclass
@@ -351,10 +351,17 @@ def runtime_mapping_rename (varname, d):
 
 python package_get_auto_pr() {
 	if d.getVar('USE_PR_SERV', True) != "0":
-		auto_pr=prserv_get_pr_auto(d)
-		if auto_pr is None:
-			bb.fatal("Can NOT get auto PR revision from remote PR service")
+		try:
+			auto_pr=prserv_get_pr_auto(d)
+		except Exception as e:
+			bb.fatal("Can NOT get PRAUTO, exception %s" %  str(e))
 			return
+		if auto_pr is None:
+			if d.getVar('PRSERV_LOCKDOWN', True):
+				bb.fatal("Can NOT get PRAUTO from lockdown exported file")
+			else:
+				bb.fatal("Can NOT get PRAUTO from remote PR service")
+			return 
 		d.setVar('PRAUTO',str(auto_pr))
 }
 
diff --git a/meta/classes/prexport.bbclass b/meta/classes/prexport.bbclass
new file mode 100644
index 0000000000..5b5b707a88
--- /dev/null
+++ b/meta/classes/prexport.bbclass
@@ -0,0 +1,45 @@
+PRSERV_DUMPOPT_VERSION = "${PRAUTOINX}"
+PRSERV_DUMPOPT_PKGARCH  = ""
+PRSERV_DUMPOPT_CHECKSUM = ""
+PRSERV_DUMPOPT_COL = "0"
+
+PRSERV_DUMPDIR ??= "${LOG_DIR}/db"
+PRSERV_DUMPFILE ??= "${PRSERV_DUMPDIR}/prserv.inc"
+
+python prexport_handler () {
+    import bb.event
+    if not e.data:
+        return
+
+    if isinstance(e, bb.event.RecipeParsed):
+        import oe.prservice
+        #get all PR values for the current PRAUTOINX
+        ver = e.data.getVar('PRSERV_DUMPOPT_VERSION', True)
+        ver = ver.replace('%','-')
+        retval = oe.prservice.prserv_dump_db(e.data)
+        if not retval:
+            bb.fatal("prexport_handler: export failed!")
+        (metainfo, datainfo) = retval
+        if not datainfo:
+            bb.error("prexport_handler: No AUROPR values found for %s" % ver)
+            return
+        oe.prservice.prserv_export_tofile(e.data, None, datainfo, False)
+    elif isinstance(e, bb.event.ParseStarted):
+        import bb.utils
+        #remove dumpfile
+        bb.utils.remove(e.data.getVar('PRSERV_DUMPFILE', True))
+    elif isinstance(e, bb.event.ParseCompleted):
+        import oe.prservice
+        #dump meta info of tables
+        d = e.data.createCopy()
+        d.setVar('PRSERV_DUMPOPT_COL', "1")
+        retval = oe.prservice.prserv_dump_db(d)
+        if not retval:
+            bb.error("prexport_handler: export failed!")
+            return
+        (metainfo, datainfo) = retval
+        oe.prservice.prserv_export_tofile(d, metainfo, None, True)
+
+}
+
+addhandler prexport_handler
diff --git a/meta/classes/primport.bbclass b/meta/classes/primport.bbclass
new file mode 100644
index 0000000000..08e5a8f426
--- /dev/null
+++ b/meta/classes/primport.bbclass
@@ -0,0 +1,17 @@
+python primport_handler () {
+    import bb.event
+    if not e.data:
+        return
+
+    if isinstance(e, bb.event.ParseCompleted):
+        import oe.prservice
+        #import all exported AUTOPR values
+        imported = oe.prservice.prserv_import_db(e.data)
+        if imported is None:
+            bb.fatal("import failed!")
+
+        for (version, pkgarch, checksum, value) in imported:
+            bb.note("imported (%s,%s,%s,%d)" % (version, pkgarch, checksum, value))
+}
+
+addhandler primport_handler
diff --git a/meta/classes/prserv.bbclass b/meta/classes/prserv.bbclass
index 18b8589a7b..0825306f91 100644
--- a/meta/classes/prserv.bbclass
+++ b/meta/classes/prserv.bbclass
@@ -1,29 +1,21 @@
-def prserv_make_conn(d):
-    import prserv.serv
-    host=d.getVar("PRSERV_HOST",True)
-    port=d.getVar("PRSERV_PORT",True)
-    try:
-        conn=None
-        conn=prserv.serv.PRServerConnection(host,int(port))
-        d.setVar("__PRSERV_CONN",conn)
-    except Exception, exc:
-        bb.fatal("Connecting to PR service %s:%s failed: %s" % (host, port, str(exc)))
-
-    return conn
-
 def prserv_get_pr_auto(d):
-    if d.getVar('USE_PR_SERV', True) != "0":
+    import oe.prservice
+    if d.getVar('USE_PR_SERV', True) != "1":
         bb.warn("Not using network based PR service")
         return None
 
-    conn=d.getVar("__PRSERV_CONN", True)
-    if conn is None:
-        conn=prserv_make_conn(d)
-        if conn is None:
-            return None
+    version = d.getVar("PRAUTOINX", True)
+    pkgarch = d.getVar("PACKAGE_ARCH", True)
+    checksum = d.getVar("BB_TASKHASH", True)
+
+    if d.getVar('PRSERV_LOCKDOWN', True):
+        auto_rev = d.getVar('PRAUTO_' + version + '_' + pkgarch, True) or d.getVar('PRAUTO_' + version, True) or None
+    else:
+        conn = d.getVar("__PRSERV_CONN", True)
+        if conn is None:
+            conn = oe.prservice.prserv_make_conn(d)
+            if conn is None:
+                return None
+        auto_rev = conn.getPR(version, pkgarch, checksum)
 
-    version=d.getVar("PF", True)
-    checksum=d.getVar("BB_TASKHASH", True)
-    auto_rev=conn.getPR(version,checksum)
-    bb.debug(1,"prserv_get_pr_auto: version: %s checksum: %s result %d" % (version, checksum, auto_rev))
     return auto_rev
diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 336b1d7062..43eedad046 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -190,7 +190,7 @@ BP = "${BPN}-${PV}"
 #
 # network based PR service
 #
-USE_PR_SERV = "${@[1,0][(d.getVar('PRSERV_HOST',1) is None) or (d.getVar('PRSERV_PORT',1) is None)]}"
+USE_PR_SERV = "${@[1,0][((not d.getVar('PRSERV_HOST', True)) or (not d.getVar('PRSERV_PORT', True))) and (not d.getVar('PRSERV_LOCKDOWN', True))]}"
 
 # Package info.
 
@@ -732,7 +732,7 @@ BB_CONSOLELOG = "${TMPDIR}/cooker.log.${DATETIME}"
 # Setup our default hash policy
 BB_SIGNATURE_HANDLER ?= "basic"
 BB_HASHTASK_WHITELIST ?= "(.*-cross$|.*-native$|.*-cross-initial$|.*-cross-intermediate$|^virtual:native:.*|^virtual:nativesdk:.*)"
-BB_HASHBASE_WHITELIST ?= "TMPDIR FILE PATH PWD BB_TASKHASH BBPATH DL_DIR SSTATE_DIR THISDIR FILESEXTRAPATHS FILE_DIRNAME HOME LOGNAME SHELL TERM USER FILESPATH STAGING_DIR_HOST STAGING_DIR_TARGET COREBASE"
+BB_HASHBASE_WHITELIST ?= "TMPDIR FILE PATH PWD BB_TASKHASH BBPATH DL_DIR SSTATE_DIR THISDIR FILESEXTRAPATHS FILE_DIRNAME HOME LOGNAME SHELL TERM USER FILESPATH STAGING_DIR_HOST STAGING_DIR_TARGET COREBASE PRSERV_HOST PRSERV_PORT PRSERV_DUMPDIR PRSERV_DUMPFILE PRSERV_LOCKDOWN"
 
 MLPREFIX ??= ""
 MULTILIB_VARIANTS ??= ""
diff --git a/meta/conf/prexport.conf b/meta/conf/prexport.conf
new file mode 100644
index 0000000000..12f3acb2da
--- /dev/null
+++ b/meta/conf/prexport.conf
@@ -0,0 +1 @@
+INHERIT += "prexport"
diff --git a/meta/conf/primport.conf b/meta/conf/primport.conf
new file mode 100644
index 0000000000..d94ea1b1e2
--- /dev/null
+++ b/meta/conf/primport.conf
@@ -0,0 +1 @@
+INHERIT += "primport"
diff --git a/meta/lib/oe/prservice.py b/meta/lib/oe/prservice.py
new file mode 100644
index 0000000000..fa6718e914
--- /dev/null
+++ b/meta/lib/oe/prservice.py
@@ -0,0 +1,113 @@
+import bb
+
+def prserv_make_conn(d):
+    import prserv.serv
+    host = d.getVar("PRSERV_HOST",True)
+    port = d.getVar("PRSERV_PORT",True)
+    try:
+        conn = None
+        conn = prserv.serv.PRServerConnection(host,int(port))
+        d.setVar("__PRSERV_CONN",conn)
+    except Exception, exc:
+        bb.fatal("Connecting to PR service %s:%s failed: %s" % (host, port, str(exc)))
+
+    return conn
+
+def prserv_dump_db(d):
+    if d.getVar('USE_PR_SERV', True) != "1":
+        bb.error("Not using network based PR service")
+        return None
+
+    conn = d.getVar("__PRSERV_CONN", True)
+    if conn is None:
+        conn = prserv_make_conn(d)
+        if conn is None:
+            bb.error("Making connection failed to remote PR service")
+            return None
+
+    #dump db
+    opt_version = d.getVar('PRSERV_DUMPOPT_VERSION', True)
+    opt_pkgarch = d.getVar('PRSERV_DUMPOPT_PKGARCH', True)
+    opt_checksum = d.getVar('PRSERV_DUMPOPT_CHECKSUM', True)
+    opt_col = ("1" == d.getVar('PRSERV_DUMPOPT_COL', True))
+    return conn.export(opt_version, opt_pkgarch, opt_checksum, opt_col)
+
+def prserv_import_db(d, filter_version=None, filter_pkgarch=None, filter_checksum=None):
+    if d.getVar('USE_PR_SERV', True) != "1":
+        bb.error("Not using network based PR service")
+        return None
+
+    conn = d.getVar("__PRSERV_CONN", True)
+    if conn is None:
+        conn = prserv_make_conn(d)
+        if conn is None:
+            bb.error("Making connection failed to remote PR service")
+            return None
+    #get the entry values
+    imported = []
+    prefix = "PRAUTO$"
+    for v in d.keys():
+        if v.startswith(prefix):
+            (remain, sep, checksum) = v.rpartition('$')
+            (remain, sep, pkgarch) = remain.rpartition('$')
+            (remain, sep, version) = remain.rpartition('$')
+            if (remain + '$' != prefix) or \
+               (filter_version and filter_version != version) or \
+               (filter_pkgarch and filter_pkgarch != pkgarch) or \
+               (filter_checksum and filter_checksum != checksum):
+               continue
+            try:
+                value = int(d.getVar(remain + '$' + version + '$' + pkgarch + '$' + checksum, True))
+            except BaseException as exc:
+                bb.debug("Not valid value of %s:%s" % (v,str(exc)))
+                continue
+            ret = conn.importone(version,pkgarch,checksum,value)
+            if ret != value:
+                bb.error("importing(%s,%s,%s,%d) failed. DB may have larger value %d" % (version,pkgarch,checksum,value,ret))
+            else:
+               imported.append((version,pkgarch,checksum,value))
+    return imported
+
+def prserv_export_tofile(d, metainfo, datainfo, lockdown, nomax=False):
+    import bb.utils
+    #initilize the output file
+    bb.utils.mkdirhier(d.getVar('PRSERV_DUMPDIR', True))
+    df = d.getVar('PRSERV_DUMPFILE', True)
+    #write data
+    lf = bb.utils.lockfile("%s.lock" % df)
+    f = open(df, "a")
+    if metainfo:
+        #dump column info 
+        f.write("#PR_core_ver = \"%s\"\n\n" % metainfo['core_ver']);
+        f.write("#Table: %s\n" % metainfo['tbl_name'])
+        f.write("#Columns:\n")
+        f.write("#name      \t type    \t notn    \t dflt    \t pk\n")
+        f.write("#----------\t --------\t --------\t --------\t ----\n")
+        for i in range(len(metainfo['col_info'])):
+            f.write("#%10s\t %8s\t %8s\t %8s\t %4s\n" % 
+                    (metainfo['col_info'][i]['name'], 
+                     metainfo['col_info'][i]['type'], 
+                     metainfo['col_info'][i]['notnull'], 
+                     metainfo['col_info'][i]['dflt_value'], 
+                     metainfo['col_info'][i]['pk']))
+        f.write("\n")
+
+    if lockdown:
+        f.write("PRSERV_LOCKDOWN = \"1\"\n\n")
+
+    if datainfo:
+        idx = {}
+        for i in range(len(datainfo)):
+            pkgarch = datainfo[i]['pkgarch']
+            value = datainfo[i]['value']
+            if not idx.has_key(pkgarch):
+                idx[pkgarch] = i
+            elif value > datainfo[idx[pkgarch]]['value']:
+                idx[pkgarch] = i
+            f.write("PRAUTO$%s$%s$%s = \"%s\"\n" % 
+                (str(datainfo[i]['version']), pkgarch, str(datainfo[i]['checksum']), str(value)))
+        if not nomax:
+            for i in idx:
+                f.write("PRAUTO_%s_%s = \"%s\"\n" % (str(datainfo[idx[i]]['version']),str(datainfo[idx[i]]['pkgarch']),str(datainfo[idx[i]]['value'])))
+    f.close()
+    bb.utils.unlockfile(lf)
diff --git a/scripts/bitbake-prserv-tool b/scripts/bitbake-prserv-tool
new file mode 100755
index 0000000000..6c0584c01e
--- /dev/null
+++ b/scripts/bitbake-prserv-tool
@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+
+help ()
+{
+    base=`basename $0`
+    echo -e "Usage: $base command"
+    echo "Avaliable commands:"
+    echo -e "\texport <file>: export and lock down the AUTOPR values from the PR service into a file for release."
+    echo -e "\timport <file>: import the AUTOPR values from the exported file into the PR service."
+}
+
+export ()
+{
+    file=$1
+    [ "x${file}" == "x" ] && help && exit 1
+    rm -f ${file}
+
+    touch dummy.inc
+    bitbake -R conf/prexport.conf -R dummy.inc -p
+    s=`bitbake -R conf/prexport.conf -R dummy.inc -e | grep ^PRSERV_DUMPFILE= | cut -f2 -d\"`
+    rm -f dummy.inc
+    if [ "x${s}" != "x" ];
+    then
+       [ -e $s ] && mv -f $s $file && echo "Exporting to file $file succeeded!"
+       return 0
+    fi
+    echo "Exporting to file $file failed!"
+    return 1
+}
+
+import ()
+{
+    file=$1
+    [ "x${file}" == "x" ] && help && exit 1
+
+    touch dummy.inc
+    bitbake -R conf/primport.conf -R dummy.inc -R $file -p
+    ret=$?
+    rm -f dummy.inc
+    [ $ret -eq 0 ] && echo "Importing from file $file succeeded!" || echo "Importing from file $file failed!"
+    return $ret
+}
+
+[ $# -eq 0 ] && help  && exit 1
+
+case $1 in
+export)
+    export $2
+    ;;
+import)
+    import $2
+    ;;
+*)
+    help
+    exit 1
+    ;;
+esac