diff --git a/tools/aconfig/aconfig_storage_read_api/Android.bp b/tools/aconfig/aconfig_storage_read_api/Android.bp
index fa41ff0..16341b9 100644
--- a/tools/aconfig/aconfig_storage_read_api/Android.bp
+++ b/tools/aconfig/aconfig_storage_read_api/Android.bp
@@ -154,18 +154,15 @@
 java_library {
     name: "aconfig_storage_reader_java",
     srcs: [
-        "srcs/android/os/flagging/PlatformAconfigPackageInternal.java",
+        "srcs/android/os/flagging/*.java",
     ],
     libs: [
         "unsupportedappusage",
-        "strict_mode_stub",
-        "aconfig_storage_stub",
     ],
     static_libs: [
         "aconfig_storage_file_java",
     ],
-    sdk_version: "core_current",
-    host_supported: true,
+    sdk_version: "current",
     visibility: [
         "//frameworks/base",
         "//build/make/tools/aconfig/aconfig_storage_read_api/tests",
diff --git a/tools/aconfig/aconfig_storage_read_api/srcs/android/os/flagging/PlatformAconfigPackage.java b/tools/aconfig/aconfig_storage_read_api/srcs/android/os/flagging/PlatformAconfigPackage.java
new file mode 100644
index 0000000..5fbe567
--- /dev/null
+++ b/tools/aconfig/aconfig_storage_read_api/srcs/android/os/flagging/PlatformAconfigPackage.java
@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) 2024 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.
+ */
+
+package android.os.flagging;
+
+import android.aconfig.storage.AconfigStorageException;
+import android.aconfig.storage.FlagTable;
+import android.aconfig.storage.FlagValueList;
+import android.aconfig.storage.PackageTable;
+import android.compat.annotation.UnsupportedAppUsage;
+import android.util.Log;
+
+import java.io.Closeable;
+import java.nio.MappedByteBuffer;
+import java.nio.channels.FileChannel;
+import java.nio.file.Paths;
+import java.nio.file.StandardOpenOption;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * An {@code aconfig} package containing the enabled state of its flags.
+ *
+ * <p><strong>Note: this is intended only to be used by generated code. To determine if a given flag
+ * is enabled in app code, the generated android flags should be used.</strong>
+ *
+ * <p>This class is used to read the flag from platform Aconfig Package.Each instance of this class
+ * will cache information related to one package. To read flags from a different package, a new
+ * instance of this class should be {@link #load loaded}.
+ *
+ * @hide
+ */
+public class PlatformAconfigPackage {
+    private static final String TAG = "PlatformAconfigPackage";
+    private static final String MAP_PATH = "/metadata/aconfig/maps/";
+    private static final String BOOT_PATH = "/metadata/aconfig/boot/";
+
+    private static final Map<String, PackageTable> sPackageTableCache = new HashMap<>();
+
+    private FlagTable mFlagTable;
+    private FlagValueList mFlagValueList;
+
+    private int mPackageBooleanStartOffset = -1;
+    private int mPackageId = -1;
+
+    private PlatformAconfigPackage() {}
+
+    /** @hide */
+    @UnsupportedAppUsage
+    public static final Set<String> PLATFORM_PACKAGE_MAP_FILES =
+            Set.of("system.package.map", "vendor.package.map", "product.package.map");
+
+    static {
+        for (String pf : PLATFORM_PACKAGE_MAP_FILES) {
+            try {
+                PackageTable pTable = PackageTable.fromBytes(mapStorageFile(MAP_PATH + pf));
+                for (String packageName : pTable.getPackageList()) {
+                    sPackageTableCache.put(packageName, pTable);
+                }
+            } catch (Exception e) {
+                // pass
+                Log.w(TAG, e.toString());
+            }
+        }
+    }
+
+    /**
+     * Loads a platform Aconfig Package from Aconfig Storage.
+     *
+     * <p>This method attempts to load the specified platform Aconfig package.
+     *
+     * @param packageName The name of the Aconfig package to load.
+     * @return An instance of {@link PlatformAconfigPackage}, which may be empty if the package is
+     *     not found in the container. Null if the package is not found in platform partitions.
+     * @throws AconfigStorageReadException if there is an error reading from Aconfig Storage, such
+     *     as if the storage system is not found, or there is an error reading the storage file. The
+     *     specific error code can be got using {@link AconfigStorageReadException#getErrorCode()}.
+     * @hide
+     */
+    @UnsupportedAppUsage
+    public static PlatformAconfigPackage load(String packageName) {
+        try {
+            PlatformAconfigPackage aconfigPackage = new PlatformAconfigPackage();
+            PackageTable pTable = sPackageTableCache.get(packageName);
+            if (pTable == null) {
+                return null;
+            }
+            PackageTable.Node pNode = pTable.get(packageName);
+            String container = pTable.getHeader().getContainer();
+            aconfigPackage.mFlagTable =
+                    FlagTable.fromBytes(mapStorageFile(MAP_PATH + container + ".flag.map"));
+            aconfigPackage.mFlagValueList =
+                    FlagValueList.fromBytes(mapStorageFile(BOOT_PATH + container + ".val"));
+            aconfigPackage.mPackageBooleanStartOffset = pNode.getBooleanStartIndex();
+            aconfigPackage.mPackageId = pNode.getPackageId();
+            return aconfigPackage;
+        } catch (AconfigStorageException e) {
+            throw new AconfigStorageReadException(
+                    e.getErrorCode(), "Fail to create AconfigPackage", e);
+        } catch (Exception e) {
+            throw new AconfigStorageReadException(
+                    AconfigStorageReadException.ERROR_GENERIC,
+                    "Fail to create PlatformAconfigPackage",
+                    e);
+        }
+    }
+
+    /**
+     * Retrieves the value of a boolean flag.
+     *
+     * <p>This method retrieves the value of the specified flag. If the flag exists within the
+     * loaded Aconfig Package, its value is returned. Otherwise, the provided `defaultValue` is
+     * returned.
+     *
+     * @param flagName The name of the flag (excluding any package name prefix).
+     * @param defaultValue The value to return if the flag is not found.
+     * @return The boolean value of the flag, or `defaultValue` if the flag is not found.
+     * @hide
+     */
+    @UnsupportedAppUsage
+    public boolean getBooleanFlagValue(String flagName, boolean defaultValue) {
+        FlagTable.Node fNode = mFlagTable.get(mPackageId, flagName);
+        if (fNode == null) {
+            return defaultValue;
+        }
+        return mFlagValueList.getBoolean(fNode.getFlagIndex() + mPackageBooleanStartOffset);
+    }
+
+    // Map a storage file given file path
+    private static MappedByteBuffer mapStorageFile(String file) {
+        FileChannel channel = null;
+        try {
+            channel = FileChannel.open(Paths.get(file), StandardOpenOption.READ);
+            return channel.map(FileChannel.MapMode.READ_ONLY, 0, channel.size());
+        } catch (Exception e) {
+            throw new AconfigStorageReadException(
+                    AconfigStorageReadException.ERROR_CANNOT_READ_STORAGE_FILE,
+                    "Fail to mmap storage",
+                    e);
+        } finally {
+            quietlyDispose(channel);
+        }
+    }
+
+    private static void quietlyDispose(Closeable closable) {
+        try {
+            if (closable != null) {
+                closable.close();
+            }
+        } catch (Exception e) {
+            // no need to care, at least as of now
+        }
+    }
+}
diff --git a/tools/aconfig/aconfig_storage_read_api/tests/functional/srcs/PlatformAconfigPackageInternalTest.java b/tools/aconfig/aconfig_storage_read_api/tests/functional/srcs/PlatformAconfigPackageInternalTest.java
index 2b0aeae..e532ff6 100644
--- a/tools/aconfig/aconfig_storage_read_api/tests/functional/srcs/PlatformAconfigPackageInternalTest.java
+++ b/tools/aconfig/aconfig_storage_read_api/tests/functional/srcs/PlatformAconfigPackageInternalTest.java
@@ -45,7 +45,7 @@
     private static final Set<String> PLATFORM_CONTAINERS = Set.of("system", "vendor", "product");
 
     @Test
-    public void testAconfigPackageInternal_load() throws IOException {
+    public void testPlatformAconfigPackageInternal_load() throws IOException {
         List<parsed_flag> flags = DeviceProtos.loadAndParseFlagProtos();
         Map<String, PlatformAconfigPackageInternal> readerMap = new HashMap<>();
         StorageFileProvider fp = StorageFileProvider.getDefaultProvider();
@@ -82,7 +82,7 @@
     }
 
     @Test
-    public void testAconfigPackage_load_withError() throws IOException {
+    public void testPlatformAconfigPackage_load_withError() throws IOException {
         // container not found fake_container
         AconfigStorageException e =
                 assertThrows(
diff --git a/tools/aconfig/aconfig_storage_read_api/tests/functional/srcs/PlatformAconfigPackageTest.java b/tools/aconfig/aconfig_storage_read_api/tests/functional/srcs/PlatformAconfigPackageTest.java
new file mode 100644
index 0000000..fabc2c9
--- /dev/null
+++ b/tools/aconfig/aconfig_storage_read_api/tests/functional/srcs/PlatformAconfigPackageTest.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2024 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.
+ */
+
+package android.aconfig.storage.test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+import android.aconfig.DeviceProtos;
+import android.aconfig.nano.Aconfig;
+import android.aconfig.nano.Aconfig.parsed_flag;
+import android.aconfig.storage.FlagTable;
+import android.aconfig.storage.FlagValueList;
+import android.aconfig.storage.PackageTable;
+import android.aconfig.storage.StorageFileProvider;
+import android.os.flagging.PlatformAconfigPackage;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+@RunWith(JUnit4.class)
+public class PlatformAconfigPackageTest {
+
+    private static final Set<String> PLATFORM_CONTAINERS = Set.of("system", "vendor", "product");
+
+    @Test
+    public void testPlatformAconfigPackage_load() throws IOException {
+        List<parsed_flag> flags = DeviceProtos.loadAndParseFlagProtos();
+        Map<String, PlatformAconfigPackage> readerMap = new HashMap<>();
+        StorageFileProvider fp = StorageFileProvider.getDefaultProvider();
+
+        for (parsed_flag flag : flags) {
+            if (flag.permission == Aconfig.READ_ONLY && flag.state == Aconfig.DISABLED) {
+                continue;
+            }
+            String container = flag.container;
+            String packageName = flag.package_;
+            String flagName = flag.name;
+            if (!PLATFORM_CONTAINERS.contains(container)) continue;
+
+            PackageTable pTable = fp.getPackageTable(container);
+            PackageTable.Node pNode = pTable.get(packageName);
+            FlagTable fTable = fp.getFlagTable(container);
+            FlagTable.Node fNode = fTable.get(pNode.getPackageId(), flagName);
+            FlagValueList fList = fp.getFlagValueList(container);
+
+            int index = pNode.getBooleanStartIndex() + fNode.getFlagIndex();
+            boolean rVal = fList.getBoolean(index);
+
+            long fingerprint = pNode.getPackageFingerprint();
+
+            PlatformAconfigPackage reader = readerMap.get(packageName);
+            if (reader == null) {
+                reader = PlatformAconfigPackage.load(packageName);
+                readerMap.put(packageName, reader);
+            }
+            boolean jVal = reader.getBooleanFlagValue(flagName, !rVal);
+
+            assertEquals(rVal, jVal);
+        }
+    }
+
+    @Test
+    public void testPlatformAconfigPackage_load_withError() throws IOException {
+        // package not found
+        assertNull(PlatformAconfigPackage.load("fake_container"));
+    }
+}
diff --git a/tools/aconfig/fake_device_config/src/android/os/flagging/AconfigStorageReadException.java b/tools/aconfig/fake_device_config/src/android/os/flagging/AconfigStorageReadException.java
deleted file mode 100644
index bfec98c..0000000
--- a/tools/aconfig/fake_device_config/src/android/os/flagging/AconfigStorageReadException.java
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (C) 2024 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.
- */
-
-package android.os.flagging;
-
-public class AconfigStorageReadException extends RuntimeException {
-
-    /** Generic error code indicating an unspecified Aconfig Storage error. */
-    public static final int ERROR_GENERIC = 0;
-
-    /** Error code indicating that the Aconfig Storage system is not found on the device. */
-    public static final int ERROR_STORAGE_SYSTEM_NOT_FOUND = 1;
-
-    /** Error code indicating that the requested configuration package is not found. */
-    public static final int ERROR_PACKAGE_NOT_FOUND = 2;
-
-    /** Error code indicating that the specified container is not found. */
-    public static final int ERROR_CONTAINER_NOT_FOUND = 3;
-
-    /** Error code indicating that there was an error reading the Aconfig Storage file. */
-    public static final int ERROR_CANNOT_READ_STORAGE_FILE = 4;
-
-    public static final int ERROR_FILE_FINGERPRINT_MISMATCH = 5;
-
-    public AconfigStorageReadException(int errorCode, String msg) {
-        super(msg);
-        throw new UnsupportedOperationException("Stub!");
-    }
-
-    public AconfigStorageReadException(int errorCode, String msg, Throwable cause) {
-        super(msg, cause);
-        throw new UnsupportedOperationException("Stub!");
-    }
-
-    public AconfigStorageReadException(int errorCode, Throwable cause) {
-        super(cause);
-        throw new UnsupportedOperationException("Stub!");
-    }
-
-    public int getErrorCode() {
-        throw new UnsupportedOperationException("Stub!");
-    }
-
-    @Override
-    public String getMessage() {
-        throw new UnsupportedOperationException("Stub!");
-    }
-}
diff --git a/tools/aconfig/fake_device_config/src/android/os/flagging/PlatformAconfigPackage.java b/tools/aconfig/fake_device_config/src/android/os/flagging/PlatformAconfigPackage.java
new file mode 100644
index 0000000..ec79f7d
--- /dev/null
+++ b/tools/aconfig/fake_device_config/src/android/os/flagging/PlatformAconfigPackage.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2024 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.
+ */
+
+package android.os.flagging;
+
+import java.util.Set;
+
+/*
+ * This class allows generated aconfig code to compile independently of the framework.
+ */
+public class PlatformAconfigPackage {
+
+    public static final Set<String> PLATFORM_PACKAGE_MAP_FILES =
+            Set.of("system.package.map", "vendor.package.map", "product.package.map");
+
+    public static PlatformAconfigPackage load(String packageName) {
+        throw new UnsupportedOperationException("Stub!");
+    }
+
+    public boolean getBooleanFlagValue(String flagName, boolean defaultValue) {
+        throw new UnsupportedOperationException("Stub!");
+    }
+}