diff --git a/CleanSpec.mk b/CleanSpec.mk
index f5f2a14..7e5dae2 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -619,6 +619,8 @@
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/etc/init/android.frameworks.bufferhub@1.0-service.rc)
 
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/super.img)
+
+$(call add-clean-step, find $(PRODUCT_OUT) -type f -name "generated_*_image_info.txt" -print0 | xargs -0 rm -f)
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************
diff --git a/core/Makefile b/core/Makefile
index 425bfcc..680fa13 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -2237,7 +2237,6 @@
   $(hide) PATH=$(foreach p,$(INTERNAL_USERIMAGES_BINARY_PATHS),$(p):)$$PATH \
       build/make/tools/releasetools/build_image.py \
       $(TARGET_OUT) $(systemimage_intermediates)/system_image_info.txt $(1) $(TARGET_OUT) \
-      $(systemimage_intermediates)/generated_system_image_info.txt \
       || ( mkdir -p $${DIST_DIR}; cp $(INSTALLED_FILES_FILE) $${DIST_DIR}/installed-files-rescued.txt; \
            exit 1 )
 endef
@@ -2285,22 +2284,7 @@
 $(INSTALLED_SYSTEMIMAGE_TARGET): $(BUILT_SYSTEMIMAGE) $(RECOVERY_FROM_BOOT_PATCH)
 	@echo "Install system fs image: $@"
 	$(copy-file-to-target)
-ifdef RECOVERY_FROM_BOOT_PATCH
-ifeq ($(PRODUCT_USE_DYNAMIC_PARTITION_SIZE),true)
-ifeq ($(BOARD_SYSTEMIMAGE_PARTITION_SIZE),)
-	# system image size is dynamic, hence system_size in generated_system_image_info.txt does not
-	# have room for recovery from boot patch. Increase system_size so that check-all-partition-sizes
-	# accounts for the size of the patch.
-	sed -i'.bak' -e 's/^system_size=.*$$/system_size='"$$(( \
-	      $(call read-image-prop-dictionary,$(systemimage_intermediates)/generated_system_image_info.txt,system_size) + \
-	      $$($(call get-file-size,$(RECOVERY_FROM_BOOT_PATCH))) ))"'/' \
-	    $(systemimage_intermediates)/generated_system_image_info.txt
-endif
-endif
-endif
-	$(hide) $(call assert-max-image-size,$@ $(RECOVERY_FROM_BOOT_PATCH),\
-	    $(call read-image-prop-dictionary,\
-	        $(systemimage_intermediates)/generated_system_image_info.txt,system_size))
+	$(hide) $(call assert-max-image-size,$@ $(RECOVERY_FROM_BOOT_PATCH),$(BOARD_SYSTEMIMAGE_PARTITION_SIZE))
 
 systemimage: $(INSTALLED_SYSTEMIMAGE_TARGET)
 
@@ -2309,9 +2293,7 @@
 	            | $(INTERNAL_USERIMAGES_DEPS)
 	@echo "make $@: ignoring dependencies"
 	$(call build-systemimage-target,$(INSTALLED_SYSTEMIMAGE_TARGET))
-	$(hide) $(call assert-max-image-size,$(INSTALLED_SYSTEMIMAGE_TARGET),\
-	    $(call read-image-prop-dictionary,\
-	        $(systemimage_intermediates)/generated_system_image_info.txt,system_size))
+	$(hide) $(call assert-max-image-size,$(INSTALLED_SYSTEMIMAGE_TARGET),$(BOARD_SYSTEMIMAGE_PARTITION_SIZE))
 
 ifneq (,$(filter systemimage-nodeps snod, $(MAKECMDGOALS)))
 ifeq (true,$(WITH_DEXPREOPT))
@@ -2677,11 +2659,8 @@
   $(call generate-image-prop-dictionary, $(systemotherimage_intermediates)/system_other_image_info.txt,system,skip_fsck=true)
   $(hide) PATH=$(foreach p,$(INTERNAL_USERIMAGES_BINARY_PATHS),$(p):)$$PATH \
       build/make/tools/releasetools/build_image.py \
-      $(TARGET_OUT_SYSTEM_OTHER) $(systemotherimage_intermediates)/system_other_image_info.txt $(INSTALLED_SYSTEMOTHERIMAGE_TARGET) $(TARGET_OUT)\
-      $(systemotherimage_intermediates)/generated_system_other_image_info.txt
-  $(hide) $(call assert-max-image-size,$(INSTALLED_SYSTEMOTHERIMAGE_TARGET),\
-    $(call read-image-prop-dictionary,\
-      $(systemotherimage_intermediates)/generated_system_other_image_info.txt,system_other_size))
+      $(TARGET_OUT_SYSTEM_OTHER) $(systemotherimage_intermediates)/system_other_image_info.txt $(INSTALLED_SYSTEMOTHERIMAGE_TARGET) $(TARGET_OUT)
+  $(hide) $(call assert-max-image-size,$(INSTALLED_SYSTEMOTHERIMAGE_TARGET),$(BOARD_SYSTEMIMAGE_PARTITION_SIZE))
 endef
 
 # We just build this directly to the install location.
@@ -2820,11 +2799,8 @@
     $(call build-image-kernel-modules,$(BOARD_VENDOR_KERNEL_MODULES),$(TARGET_OUT_VENDOR),vendor/,$(call intermediates-dir-for,PACKAGING,depmod_vendor)))
   $(hide) PATH=$(foreach p,$(INTERNAL_USERIMAGES_BINARY_PATHS),$(p):)$$PATH \
       build/make/tools/releasetools/build_image.py \
-      $(TARGET_OUT_VENDOR) $(vendorimage_intermediates)/vendor_image_info.txt $(INSTALLED_VENDORIMAGE_TARGET) $(TARGET_OUT) \
-      $(vendorimage_intermediates)/generated_vendor_image_info.txt
-  $(hide) $(call assert-max-image-size,$(INSTALLED_VENDORIMAGE_TARGET),\
-      $(call read-image-prop-dictionary,\
-          $(vendorimage_intermediates)/generated_vendor_image_info.txt,vendor_size))
+      $(TARGET_OUT_VENDOR) $(vendorimage_intermediates)/vendor_image_info.txt $(INSTALLED_VENDORIMAGE_TARGET) $(TARGET_OUT)
+  $(hide) $(call assert-max-image-size,$(INSTALLED_VENDORIMAGE_TARGET),$(BOARD_VENDORIMAGE_PARTITION_SIZE))
 endef
 
 # We just build this directly to the install location.
@@ -2878,11 +2854,8 @@
   $(call generate-image-prop-dictionary, $(productimage_intermediates)/product_image_info.txt,product,skip_fsck=true)
   $(hide) PATH=$(foreach p,$(INTERNAL_USERIMAGES_BINARY_PATHS),$(p):)$$PATH \
       ./build/tools/releasetools/build_image.py \
-      $(TARGET_OUT_PRODUCT) $(productimage_intermediates)/product_image_info.txt $(INSTALLED_PRODUCTIMAGE_TARGET) $(TARGET_OUT) \
-      $(productimage_intermediates)/generated_product_image_info.txt
-  $(hide) $(call assert-max-image-size,$(INSTALLED_PRODUCTIMAGE_TARGET),\
-      $(call read-image-prop-dictionary,\
-          $(productimage_intermediates)/generated_product_image_info.txt,product_size))
+      $(TARGET_OUT_PRODUCT) $(productimage_intermediates)/product_image_info.txt $(INSTALLED_PRODUCTIMAGE_TARGET) $(TARGET_OUT)
+  $(hide) $(call assert-max-image-size,$(INSTALLED_PRODUCTIMAGE_TARGET),$(BOARD_PRODUCTIMAGE_PARTITION_SIZE))
 endef
 
 # We just build this directly to the install location.
@@ -2933,11 +2906,8 @@
   $(call generate-image-prop-dictionary, $(product_servicesimage_intermediates)/product_services_image_info.txt,product_services, skip_fsck=true)
   $(hide) PATH=$(foreach p,$(INTERNAL_USERIMAGES_BINARY_PATHS),$(p):)$$PATH \
       ./build/tools/releasetools/build_image.py \
-      $(TARGET_OUT_PRODUCT_SERVICES) $(product_servicesimage_intermediates)/product_services_image_info.txt $(INSTALLED_PRODUCT_SERVICESIMAGE_TARGET) $(TARGET_OUT) \
-      $(product_servicesimage_intermediates)/generated_product_services_image_info.txt
-  $(hide) $(call assert-max-image-size,$(INSTALLED_PRODUCT_SERVICESIMAGE_TARGET),\
-      $(call read-image-prop-dictionary,\
-          $(product_servicesimage_intermediates)/generated_product_services_image_info.txt,product_services_size))
+      $(TARGET_OUT_PRODUCT_SERVICES) $(product_servicesimage_intermediates)/product_services_image_info.txt $(INSTALLED_PRODUCT_SERVICESIMAGE_TARGET) $(TARGET_OUT)
+  $(hide) $(call assert-max-image-size,$(INSTALLED_PRODUCT_SERVICESIMAGE_TARGET),$(BOARD_PRODUCT_SERVICESIMAGE_PARTITION_SIZE))
 endef
 
 # We just build this directly to the install location.
@@ -2989,11 +2959,8 @@
     $(call build-image-kernel-modules,$(BOARD_ODM_KERNEL_MODULES),$(TARGET_OUT_ODM),odm/,$(call intermediates-dir-for,PACKAGING,depmod_odm)))
   $(hide) PATH=$(foreach p,$(INTERNAL_USERIMAGES_BINARY_PATHS),$(p):)$$PATH \
       ./build/tools/releasetools/build_image.py \
-      $(TARGET_OUT_ODM) $(odmimage_intermediates)/odm_image_info.txt $(INSTALLED_ODMIMAGE_TARGET) $(TARGET_OUT) \
-	  $(odmimage_intermediates)/generated_odm_image_info.txt
-  $(hide) $(call assert-max-image-size,$(INSTALLED_ODMIMAGE_TARGET),\
-      $(call read-image-prop-dictionary,\
-          $(odmimage_intermediates)/generated_odm_image_info.txt,odm_size))
+      $(TARGET_OUT_ODM) $(odmimage_intermediates)/odm_image_info.txt $(INSTALLED_ODMIMAGE_TARGET) $(TARGET_OUT)
+  $(hide) $(call assert-max-image-size,$(INSTALLED_ODMIMAGE_TARGET),$(BOARD_ODMIMAGE_PARTITION_SIZE))
 endef
 
 # We just build this directly to the install location.
@@ -3363,7 +3330,8 @@
 # (1): list of items like "system", "vendor", "product", "product_services"
 # return: map each item into a command ( wrapped in $$() ) that reads the size
 define read-size-of-partitions
-$(foreach p,$(1),$(call read-image-prop-dictionary,$($(p)image_intermediates)/generated_$(p)_image_info.txt,$(p)_size))
+$(foreach image,$(call images-for-partitions,$(1)),$$( \
+    build/make/tools/releasetools/sparse_img.py --get_partition_size $(image)))
 endef
 
 # round result to BOARD_SUPER_PARTITION_ALIGNMENT
@@ -3387,7 +3355,9 @@
 .PHONY: check-all-partition-sizes check-all-partition-sizes-nodeps
 
 # Add image dependencies so that generated_*_image_info.txt are written before checking.
-check-all-partition-sizes: $(call images-for-partitions,$(BOARD_SUPER_PARTITION_PARTITION_LIST))
+check-all-partition-sizes: \
+    build/make/tools/releasetools/sparse_img.py \
+    $(call images-for-partitions,$(BOARD_SUPER_PARTITION_PARTITION_LIST))
 
 ifeq ($(PRODUCT_RETROFIT_DYNAMIC_PARTITIONS),true)
 # Check sum(super partition block devices) == super partition
diff --git a/tools/releasetools/build_image.py b/tools/releasetools/build_image.py
index d2f4e25..4136ed4 100755
--- a/tools/releasetools/build_image.py
+++ b/tools/releasetools/build_image.py
@@ -18,10 +18,8 @@
 Builds output_image from the given input_directory, properties_file,
 and writes the image to target_output_directory.
 
-If argument generated_prop_file exists, write additional properties to the file.
-
 Usage:  build_image.py input_directory properties_file output_image \\
-            target_output_directory [generated_prop_file]
+            target_output_directory
 """
 
 from __future__ import print_function
@@ -735,13 +733,8 @@
   return d
 
 
-def SaveGlobalDict(filename, glob_dict):
-  with open(filename, "w") as f:
-    f.writelines(["%s=%s" % (key, value) for (key, value) in glob_dict.items()])
-
-
 def main(argv):
-  if len(argv) < 4 or len(argv) > 5:
+  if len(argv) != 4:
     print(__doc__)
     sys.exit(1)
 
@@ -751,7 +744,6 @@
   glob_dict_file = argv[1]
   out_file = argv[2]
   target_out = argv[3]
-  prop_file_out = argv[4] if len(argv) >= 5 else None
 
   glob_dict = LoadGlobalDict(glob_dict_file)
   if "mount_point" in glob_dict:
@@ -791,10 +783,6 @@
     logger.error("Failed to build %s from %s", out_file, in_dir)
     raise
 
-  if prop_file_out:
-    glob_dict_out = GlobalDictFromImageProp(image_properties, mount_point)
-    SaveGlobalDict(prop_file_out, glob_dict_out)
-
 
 if __name__ == '__main__':
   try:
diff --git a/tools/releasetools/build_super_image.py b/tools/releasetools/build_super_image.py
index 2d596a4..f63453d 100755
--- a/tools/releasetools/build_super_image.py
+++ b/tools/releasetools/build_super_image.py
@@ -58,16 +58,8 @@
 UNZIP_PATTERN = ["IMAGES/*", "META/*"]
 
 
-def GetPartitionSizeFromImage(img):
-  try:
-    simg = sparse_img.SparseImage(img)
-    return simg.blocksize * simg.total_blocks
-  except ValueError:
-    return os.path.getsize(img)
-
-
 def GetArgumentsForImage(partition, group, image=None):
-  image_size = GetPartitionSizeFromImage(image) if image else 0
+  image_size = sparse_img.GetImagePartitionSize(image) if image else 0
 
   cmd = ["--partition",
          "{}:readonly:{}:{}".format(partition, image_size, group)]
diff --git a/tools/releasetools/sparse_img.py b/tools/releasetools/sparse_img.py
old mode 100644
new mode 100755
index 7919ba4..3367896
--- a/tools/releasetools/sparse_img.py
+++ b/tools/releasetools/sparse_img.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+#
 # Copyright (C) 2014 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -12,6 +14,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import print_function
+
+import argparse
 import bisect
 import logging
 import os
@@ -344,3 +349,21 @@
     """Throw away the file map and treat the entire image as
     undifferentiated data."""
     self.file_map = {"__DATA": self.care_map}
+
+
+def GetImagePartitionSize(img):
+  try:
+    simg = SparseImage(img, build_map=False)
+    return simg.blocksize * simg.total_blocks
+  except ValueError:
+    return os.path.getsize(img)
+
+
+if __name__ == '__main__':
+  parser = argparse.ArgumentParser()
+  parser.add_argument('image')
+  parser.add_argument('--get_partition_size', action='store_true',
+                      help='Return partition size of the image')
+  args = parser.parse_args()
+  if args.get_partition_size:
+    print(GetImagePartitionSize(args.image))