add recovery update code to system images
Currently, the "img" zip files generated by the build system lack the
script and data needed to rewrite the recovery partition, while the
"ota" zip files do (when installed).
In order to move towards block-based OTAs, we want the result of
flashing an image and the result of installing the corresponding OTA
package to be identical.
Generate the recovery-from-boot patch and install script as part of
the process of building the target-files. This requires breaking the
code to generate that out of ota_from_target_files into its own tool
that we can run from the Makefile. (ota_from_target_files can still
do this, so it continues to work with older target-files.)
Bug: 12893978
Change-Id: I80e62268840780b81216e548be89b47baf81b4ac
diff --git a/tools/releasetools/make_recovery_patch b/tools/releasetools/make_recovery_patch
new file mode 100755
index 0000000..765063a
--- /dev/null
+++ b/tools/releasetools/make_recovery_patch
@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2014 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import sys
+
+if sys.hexversion < 0x02040000:
+ print >> sys.stderr, "Python 2.4 or newer is required."
+ sys.exit(1)
+
+import os
+import common
+
+OPTIONS = common.OPTIONS
+
+def main(argv):
+ # def option_handler(o, a):
+ # return False
+
+ args = common.ParseOptions(argv, __doc__)
+ input_dir, output_dir = args
+
+ OPTIONS.info_dict = common.LoadInfoDict(input_dir)
+
+ recovery_img = common.GetBootableImage("recovery.img", "recovery.img",
+ input_dir, "RECOVERY")
+ boot_img = common.GetBootableImage("boot.img", "boot.img",
+ input_dir, "BOOT")
+
+ def output_sink(fn, data):
+ with open(os.path.join(output_dir, "SYSTEM", *fn.split("/")), "wb") as f:
+ f.write(data)
+
+ common.MakeRecoveryPatch(input_dir, output_sink, recovery_img, boot_img)
+
+
+if __name__ == '__main__':
+ main(sys.argv[1:])