diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index 71ae21f..7805e30 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -738,18 +738,22 @@
     partition: name of the partition.
     props_allow_override: a list of build properties to search for the
         alternative values during runtime.
-    build_props: a dictionary of build properties for the given partition.
-    prop_overrides: a dict of list. And each list holds the overridden values
-        for props_allow_override.
+    build_props: a dict of build properties for the given partition.
+    prop_overrides: a set of props that are overridden by import.
+    placeholder_values: A dict of runtime variables' values to replace the
+        placeholders in the build.prop file. We expect exactly one value for
+        each of the variables.
   """
-
-  def __init__(self, input_file, name):
+  def __init__(self, input_file, name, placeholder_values=None):
     self.input_file = input_file
     self.partition = name
     self.props_allow_override = [props.format(name) for props in [
-        'ro.product.{}.name', 'ro.product.{}.device']]
+        'ro.product.{}.brand', 'ro.product.{}.name', 'ro.product.{}.device']]
     self.build_props = {}
-    self.prop_overrides = {}
+    self.prop_overrides = set()
+    self.placeholder_values = {}
+    if placeholder_values:
+      self.placeholder_values = copy.deepcopy(placeholder_values)
 
   @staticmethod
   def FromDictionary(name, build_props):
@@ -760,9 +764,8 @@
     return props
 
   @staticmethod
-  def FromInputFile(input_file, name):
+  def FromInputFile(input_file, name, placeholder_values=None):
     """Loads the build.prop file and builds the attributes."""
-
     data = ''
     for prop_file in ['{}/etc/build.prop'.format(name.upper()),
                       '{}/build.prop'.format(name.upper())]:
@@ -772,10 +775,62 @@
       except KeyError:
         logger.warning('Failed to read %s', prop_file)
 
-    props = PartitionBuildProps(input_file, name)
-    props.build_props = LoadDictionaryFromLines(data.split('\n'))
+    props = PartitionBuildProps(input_file, name, placeholder_values)
+    props._LoadBuildProp(data)
     return props
 
+  def _LoadBuildProp(self, data):
+    for line in data.split('\n'):
+      line = line.strip()
+      if not line or line.startswith("#"):
+        continue
+      if line.startswith("import"):
+        overrides = self._ImportParser(line)
+        duplicates = self.prop_overrides.intersection(overrides.keys())
+        if duplicates:
+          raise ValueError('prop {} is overridden multiple times'.format(
+              ','.join(duplicates)))
+        self.prop_overrides = self.prop_overrides.union(overrides.keys())
+        self.build_props.update(overrides)
+      elif "=" in line:
+        name, value = line.split("=", 1)
+        if name in self.prop_overrides:
+          raise ValueError('prop {} is set again after overridden by import '
+                           'statement'.format(name))
+        self.build_props[name] = value
+
+  def _ImportParser(self, line):
+    """Parses the build prop in a given import statement."""
+
+    tokens = line.split()
+    if len(tokens) != 2 or tokens[0] != 'import':
+      raise ValueError('Unrecognized import statement {}'.format(line))
+    import_path = tokens[1]
+    if not re.match(r'^/{}/.*\.prop$'.format(self.partition), import_path):
+      raise ValueError('Unrecognized import path {}'.format(line))
+
+    # We only recognize a subset of import statement that the init process
+    # supports. And we can loose the restriction based on how the dynamic
+    # fingerprint is used in practice. The placeholder format should be
+    # ${placeholder}, and its value should be provided by the caller through
+    # the placeholder_values.
+    for prop, value in self.placeholder_values.items():
+      prop_place_holder = '${{{}}}'.format(prop)
+      if prop_place_holder in import_path:
+        import_path = import_path.replace(prop_place_holder, value)
+    if '$' in import_path:
+      logger.info('Unresolved place holder in import path %s', import_path)
+      return {}
+
+    import_path = import_path.replace('/{}'.format(self.partition),
+                                      self.partition.upper())
+    logger.info('Parsing build props override from %s', import_path)
+
+    lines = ReadFromInputFile(self.input_file, import_path).split('\n')
+    d = LoadDictionaryFromLines(lines)
+    return {key: val for key, val in d.items()
+            if key in self.props_allow_override}
+
   def GetProp(self, prop):
     return self.build_props.get(prop)
 
diff --git a/tools/releasetools/ota_from_target_files.py b/tools/releasetools/ota_from_target_files.py
index 92a46a2..47ad3d8 100755
--- a/tools/releasetools/ota_from_target_files.py
+++ b/tools/releasetools/ota_from_target_files.py
@@ -193,6 +193,8 @@
 from __future__ import print_function
 
 import collections
+import copy
+import itertools
 import logging
 import multiprocessing
 import os.path
@@ -229,6 +231,7 @@
 OPTIONS.no_signing = False
 OPTIONS.block_based = True
 OPTIONS.updater_binary = None
+OPTIONS.oem_dicts = None
 OPTIONS.oem_source = None
 OPTIONS.oem_no_mount = False
 OPTIONS.full_radio = False
@@ -247,6 +250,7 @@
 OPTIONS.skip_compatibility_check = False
 OPTIONS.output_metadata_path = None
 OPTIONS.disable_fec_computation = False
+OPTIONS.boot_variable_values = None
 
 
 METADATA_NAME = 'META-INF/com/android/metadata'
@@ -1959,6 +1963,36 @@
           output_file)
 
 
+def CalculateRuntimeFingerprints():
+  """Returns a set of runtime fingerprints based on the boot variables."""
+
+  build_info = common.BuildInfo(OPTIONS.info_dict, OPTIONS.oem_dicts)
+  fingerprints = {build_info.fingerprint}
+
+  if not OPTIONS.boot_variable_values:
+    return fingerprints
+
+  # Calculate all possible combinations of the values for the boot variables.
+  keys = OPTIONS.boot_variable_values.keys()
+  value_list = OPTIONS.boot_variable_values.values()
+  combinations = [dict(zip(keys, values))
+                  for values in itertools.product(*value_list)]
+  for placeholder_values in combinations:
+    # Reload the info_dict as some build properties may change their values
+    # based on the value of ro.boot* properties.
+    info_dict = copy.deepcopy(OPTIONS.info_dict)
+    for partition in common.PARTITIONS_WITH_CARE_MAP:
+      partition_prop_key = "{}.build.prop".format(partition)
+      old_props = info_dict[partition_prop_key]
+      info_dict[partition_prop_key] = common.PartitionBuildProps.FromInputFile(
+          old_props.input_file, partition, placeholder_values)
+    info_dict["build.prop"] = info_dict["system.build.prop"]
+
+    build_info = common.BuildInfo(info_dict, OPTIONS.oem_dicts)
+    fingerprints.add(build_info.fingerprint)
+  return fingerprints
+
+
 def main(argv):
 
   def option_handler(o, a):
diff --git a/tools/releasetools/test_common.py b/tools/releasetools/test_common.py
index c0c2d3f..787e675 100644
--- a/tools/releasetools/test_common.py
+++ b/tools/releasetools/test_common.py
@@ -1899,7 +1899,7 @@
 
 class PartitionBuildPropsTest(test_utils.ReleaseToolsTestCase):
   def setUp(self):
-    self.build_prop = [
+    self.odm_build_prop = [
         'ro.odm.build.date.utc=1578430045',
         'ro.odm.build.fingerprint='
         'google/coral/coral:10/RP1A.200325.001/6337676:user/dev-keys',
@@ -1918,13 +1918,81 @@
 
   def test_parseBuildProps_noImportStatement(self):
     build_prop = [
-      'ro.odm.build.date.utc=1578430045',
-      'ro.odm.build.fingerprint='
-      'google/coral/coral:10/RP1A.200325.001/6337676:user/dev-keys',
-      'ro.product.odm.device=coral',
+        'ro.odm.build.date.utc=1578430045',
+        'ro.odm.build.fingerprint='
+        'google/coral/coral:10/RP1A.200325.001/6337676:user/dev-keys',
+        'ro.product.odm.device=coral',
     ]
     input_file = self._BuildZipFile({
-      'ODM/etc/build.prop': '\n'.join(build_prop),
+        'ODM/etc/build.prop': '\n'.join(build_prop),
+    })
+
+    with zipfile.ZipFile(input_file, 'r') as input_zip:
+      placeholder_values = {
+          'ro.boot.product.device_name': ['std', 'pro']
+      }
+      partition_props = common.PartitionBuildProps.FromInputFile(
+          input_zip, 'odm', placeholder_values)
+
+    self.assertEqual({
+        'ro.odm.build.date.utc': '1578430045',
+        'ro.odm.build.fingerprint':
+        'google/coral/coral:10/RP1A.200325.001/6337676:user/dev-keys',
+        'ro.product.odm.device': 'coral',
+    }, partition_props.build_props)
+
+    self.assertEqual(set(), partition_props.prop_overrides)
+
+  def test_parseBuildProps_singleImportStatement(self):
+    build_std_prop = [
+        'ro.product.odm.device=coral',
+        'ro.product.odm.name=product1',
+    ]
+    build_pro_prop = [
+        'ro.product.odm.device=coralpro',
+        'ro.product.odm.name=product2',
+    ]
+
+    input_file = self._BuildZipFile({
+        'ODM/etc/build.prop': '\n'.join(self.odm_build_prop),
+        'ODM/etc/build_std.prop': '\n'.join(build_std_prop),
+        'ODM/etc/build_pro.prop': '\n'.join(build_pro_prop),
+    })
+
+    with zipfile.ZipFile(input_file, 'r') as input_zip:
+      placeholder_values = {
+          'ro.boot.product.device_name': 'std'
+      }
+      partition_props = common.PartitionBuildProps.FromInputFile(
+          input_zip, 'odm', placeholder_values)
+
+    self.assertEqual({
+      'ro.odm.build.date.utc': '1578430045',
+      'ro.odm.build.fingerprint':
+      'google/coral/coral:10/RP1A.200325.001/6337676:user/dev-keys',
+      'ro.product.odm.device': 'coral',
+      'ro.product.odm.name': 'product1',
+    }, partition_props.build_props)
+
+    with zipfile.ZipFile(input_file, 'r') as input_zip:
+      placeholder_values = {
+          'ro.boot.product.device_name': 'pro'
+      }
+      partition_props = common.PartitionBuildProps.FromInputFile(
+          input_zip, 'odm', placeholder_values)
+
+    self.assertEqual({
+        'ro.odm.build.date.utc': '1578430045',
+        'ro.odm.build.fingerprint':
+        'google/coral/coral:10/RP1A.200325.001/6337676:user/dev-keys',
+        'ro.product.odm.device': 'coralpro',
+        'ro.product.odm.name': 'product2',
+    }, partition_props.build_props)
+
+  def test_parseBuildProps_noPlaceHolders(self):
+    build_prop = copy.copy(self.odm_build_prop)
+    input_file = self._BuildZipFile({
+        'ODM/etc/build.prop': '\n'.join(build_prop),
     })
 
     with zipfile.ZipFile(input_file, 'r') as input_zip:
@@ -1932,10 +2000,136 @@
           input_zip, 'odm')
 
     self.assertEqual({
-      'ro.odm.build.date.utc': '1578430045',
-      'ro.odm.build.fingerprint':
-      'google/coral/coral:10/RP1A.200325.001/6337676:user/dev-keys',
-      'ro.product.odm.device': 'coral',
+        'ro.odm.build.date.utc': '1578430045',
+        'ro.odm.build.fingerprint':
+        'google/coral/coral:10/RP1A.200325.001/6337676:user/dev-keys',
+        'ro.product.odm.device': 'coral',
     }, partition_props.build_props)
 
-    self.assertEqual({}, partition_props.prop_overrides)
+    self.assertEqual(set(), partition_props.prop_overrides)
+
+  def test_parseBuildProps_multipleImportStatements(self):
+    build_prop = copy.deepcopy(self.odm_build_prop)
+    build_prop.append(
+        'import /odm/etc/build_${ro.boot.product.product_name}.prop')
+
+    build_std_prop = [
+        'ro.product.odm.device=coral',
+    ]
+    build_pro_prop = [
+        'ro.product.odm.device=coralpro',
+    ]
+
+    product1_prop = [
+        'ro.product.odm.name=product1',
+        'ro.product.not_care=not_care',
+    ]
+
+    product2_prop = [
+        'ro.product.odm.name=product2',
+        'ro.product.not_care=not_care',
+    ]
+
+    input_file = self._BuildZipFile({
+        'ODM/etc/build.prop': '\n'.join(build_prop),
+        'ODM/etc/build_std.prop': '\n'.join(build_std_prop),
+        'ODM/etc/build_pro.prop': '\n'.join(build_pro_prop),
+        'ODM/etc/build_product1.prop': '\n'.join(product1_prop),
+        'ODM/etc/build_product2.prop': '\n'.join(product2_prop),
+    })
+
+    with zipfile.ZipFile(input_file, 'r') as input_zip:
+      placeholder_values = {
+          'ro.boot.product.device_name': 'std',
+          'ro.boot.product.product_name': 'product1',
+          'ro.boot.product.not_care': 'not_care',
+      }
+      partition_props = common.PartitionBuildProps.FromInputFile(
+          input_zip, 'odm', placeholder_values)
+
+    self.assertEqual({
+        'ro.odm.build.date.utc': '1578430045',
+        'ro.odm.build.fingerprint':
+        'google/coral/coral:10/RP1A.200325.001/6337676:user/dev-keys',
+        'ro.product.odm.device': 'coral',
+        'ro.product.odm.name': 'product1'
+    }, partition_props.build_props)
+
+    with zipfile.ZipFile(input_file, 'r') as input_zip:
+      placeholder_values = {
+          'ro.boot.product.device_name': 'pro',
+          'ro.boot.product.product_name': 'product2',
+          'ro.boot.product.not_care': 'not_care',
+      }
+      partition_props = common.PartitionBuildProps.FromInputFile(
+          input_zip, 'odm', placeholder_values)
+
+    self.assertEqual({
+        'ro.odm.build.date.utc': '1578430045',
+        'ro.odm.build.fingerprint':
+        'google/coral/coral:10/RP1A.200325.001/6337676:user/dev-keys',
+        'ro.product.odm.device': 'coralpro',
+        'ro.product.odm.name': 'product2'
+    }, partition_props.build_props)
+
+  def test_parseBuildProps_defineAfterOverride(self):
+    build_prop = copy.deepcopy(self.odm_build_prop)
+    build_prop.append('ro.product.odm.device=coral')
+
+    build_std_prop = [
+        'ro.product.odm.device=coral',
+    ]
+    build_pro_prop = [
+        'ro.product.odm.device=coralpro',
+    ]
+
+    input_file = self._BuildZipFile({
+        'ODM/etc/build.prop': '\n'.join(build_prop),
+        'ODM/etc/build_std.prop': '\n'.join(build_std_prop),
+        'ODM/etc/build_pro.prop': '\n'.join(build_pro_prop),
+    })
+
+    with zipfile.ZipFile(input_file, 'r') as input_zip:
+      placeholder_values = {
+          'ro.boot.product.device_name': 'std',
+      }
+
+      self.assertRaises(ValueError, common.PartitionBuildProps.FromInputFile,
+                        input_zip, 'odm', placeholder_values)
+
+  def test_parseBuildProps_duplicateOverride(self):
+    build_prop = copy.deepcopy(self.odm_build_prop)
+    build_prop.append(
+        'import /odm/etc/build_${ro.boot.product.product_name}.prop')
+
+    build_std_prop = [
+        'ro.product.odm.device=coral',
+        'ro.product.odm.name=product1',
+    ]
+    build_pro_prop = [
+        'ro.product.odm.device=coralpro',
+    ]
+
+    product1_prop = [
+        'ro.product.odm.name=product1',
+    ]
+
+    product2_prop = [
+        'ro.product.odm.name=product2',
+    ]
+
+    input_file = self._BuildZipFile({
+        'ODM/etc/build.prop': '\n'.join(build_prop),
+        'ODM/etc/build_std.prop': '\n'.join(build_std_prop),
+        'ODM/etc/build_pro.prop': '\n'.join(build_pro_prop),
+        'ODM/etc/build_product1.prop': '\n'.join(product1_prop),
+        'ODM/etc/build_product2.prop': '\n'.join(product2_prop),
+    })
+
+    with zipfile.ZipFile(input_file, 'r') as input_zip:
+      placeholder_values = {
+          'ro.boot.product.device_name': 'std',
+          'ro.boot.product.product_name': 'product1',
+      }
+      self.assertRaises(ValueError, common.PartitionBuildProps.FromInputFile,
+                        input_zip, 'odm', placeholder_values)
diff --git a/tools/releasetools/test_ota_from_target_files.py b/tools/releasetools/test_ota_from_target_files.py
index e007863..4077d06 100644
--- a/tools/releasetools/test_ota_from_target_files.py
+++ b/tools/releasetools/test_ota_from_target_files.py
@@ -26,7 +26,8 @@
     GetPackageMetadata, GetTargetFilesZipForSecondaryImages,
     GetTargetFilesZipWithoutPostinstallConfig, NonAbOtaPropertyFiles,
     Payload, PayloadSigner, POSTINSTALL_CONFIG, PropertyFiles,
-    StreamingPropertyFiles, WriteFingerprintAssertion)
+    StreamingPropertyFiles, WriteFingerprintAssertion,
+    CalculateRuntimeFingerprints)
 
 
 def construct_target_files(secondary=False):
@@ -1318,3 +1319,125 @@
             Payload.SECONDARY_PAYLOAD_PROPERTIES_TXT):
           continue
         self.assertEqual(zipfile.ZIP_STORED, entry_info.compress_type)
+
+
+class RuntimeFingerprintTest(test_utils.ReleaseToolsTestCase):
+  MISC_INFO = [
+      'recovery_api_version=3',
+      'fstab_version=2',
+      'recovery_as_boot=true',
+  ]
+
+  BUILD_PROP = [
+      'ro.build.version.release=version-release',
+      'ro.build.id=build-id',
+      'ro.build.version.incremental=version-incremental',
+      'ro.build.type=build-type',
+      'ro.build.tags=build-tags',
+  ]
+
+  VENDOR_BUILD_PROP = [
+      'ro.product.vendor.brand=vendor-product-brand',
+      'ro.product.vendor.name=vendor-product-name',
+      'ro.product.vendor.device=vendor-product-device'
+  ]
+
+  def setUp(self):
+    common.OPTIONS.oem_dicts = None
+    self.test_dir = common.MakeTempDir()
+    self.writeFiles({'META/misc_info.txt': '\n'.join(self.MISC_INFO)})
+
+  def writeFiles(self, contents_dict):
+    for path, content in contents_dict.items():
+      abs_path = os.path.join(self.test_dir, path)
+      dir_name = os.path.dirname(abs_path)
+      if not os.path.exists(dir_name):
+        os.makedirs(dir_name)
+      with open(abs_path, 'w') as f:
+        f.write(content)
+
+  @staticmethod
+  def constructFingerprint(prefix):
+    return '{}:version-release/build-id/version-incremental:' \
+           'build-type/build-tags'.format(prefix)
+
+  def test_CalculatePossibleFingerprints_no_dynamic_fingerprint(self):
+    build_prop = copy.deepcopy(self.BUILD_PROP)
+    build_prop.extend([
+        'ro.product.brand=product-brand',
+        'ro.product.name=product-name',
+        'ro.product.device=product-device',
+    ])
+    self.writeFiles({
+        'SYSTEM/build.prop': '\n'.join(build_prop),
+        'VENDOR/build.prop': '\n'.join(self.VENDOR_BUILD_PROP),
+    })
+    common.OPTIONS.info_dict = common.LoadInfoDict(self.test_dir)
+
+    self.assertEqual({
+        self.constructFingerprint('product-brand/product-name/product-device')
+    }, CalculateRuntimeFingerprints())
+
+  def test_CalculatePossibleFingerprints_single_override(self):
+    vendor_build_prop = copy.deepcopy(self.VENDOR_BUILD_PROP)
+    vendor_build_prop.extend([
+        'import /vendor/etc/build_${ro.boot.sku_name}.prop',
+    ])
+    self.writeFiles({
+        'SYSTEM/build.prop': '\n'.join(self.BUILD_PROP),
+        'VENDOR/build.prop': '\n'.join(vendor_build_prop),
+        'VENDOR/etc/build_std.prop':
+        'ro.product.vendor.name=vendor-product-std',
+        'VENDOR/etc/build_pro.prop':
+        'ro.product.vendor.name=vendor-product-pro',
+    })
+    common.OPTIONS.info_dict = common.LoadInfoDict(self.test_dir)
+    common.OPTIONS.boot_variable_values = {
+        'ro.boot.sku_name': ['std', 'pro']
+    }
+
+    self.assertEqual({
+        self.constructFingerprint(
+            'vendor-product-brand/vendor-product-name/vendor-product-device'),
+        self.constructFingerprint(
+            'vendor-product-brand/vendor-product-std/vendor-product-device'),
+        self.constructFingerprint(
+            'vendor-product-brand/vendor-product-pro/vendor-product-device'),
+    }, CalculateRuntimeFingerprints())
+
+  def test_CalculatePossibleFingerprints_multiple_overrides(self):
+    vendor_build_prop = copy.deepcopy(self.VENDOR_BUILD_PROP)
+    vendor_build_prop.extend([
+        'import /vendor/etc/build_${ro.boot.sku_name}.prop',
+        'import /vendor/etc/build_${ro.boot.device_name}.prop',
+    ])
+    self.writeFiles({
+        'SYSTEM/build.prop': '\n'.join(self.BUILD_PROP),
+        'VENDOR/build.prop': '\n'.join(vendor_build_prop),
+        'VENDOR/etc/build_std.prop':
+        'ro.product.vendor.name=vendor-product-std',
+        'VENDOR/etc/build_product1.prop':
+        'ro.product.vendor.device=vendor-device-product1',
+        'VENDOR/etc/build_pro.prop':
+        'ro.product.vendor.name=vendor-product-pro',
+        'VENDOR/etc/build_product2.prop':
+        'ro.product.vendor.device=vendor-device-product2',
+    })
+    common.OPTIONS.info_dict = common.LoadInfoDict(self.test_dir)
+    common.OPTIONS.boot_variable_values = {
+        'ro.boot.sku_name': ['std', 'pro'],
+        'ro.boot.device_name': ['product1', 'product2'],
+    }
+
+    self.assertEqual({
+        self.constructFingerprint(
+            'vendor-product-brand/vendor-product-name/vendor-product-device'),
+        self.constructFingerprint(
+            'vendor-product-brand/vendor-product-std/vendor-device-product1'),
+        self.constructFingerprint(
+            'vendor-product-brand/vendor-product-pro/vendor-device-product1'),
+        self.constructFingerprint(
+            'vendor-product-brand/vendor-product-std/vendor-device-product2'),
+        self.constructFingerprint(
+            'vendor-product-brand/vendor-product-pro/vendor-device-product2'),
+    }, CalculateRuntimeFingerprints())