diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000000..8ca75e79237
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,36 @@
+#
+# NOTE! Don't add files that are generated in specific
+# subdirectories here. Add them in the ".gitignore" file
+# in that subdirectory instead.
+#
+# Normal rules
+#
+
+*.rej
+*.orig
+*~
+*.patch
+*.diff
+.DS_Store
+._*
+
+#
+# Top-level generic files
+#
+
+/out
+/rockdev
+/kernel/*.img
+/IMAGE
+
+#
+# Generated files
+#
+
+*.depend
+*.log
+/.bootstrap
+
+# cscope files
+cscope.*
+
diff --git a/external/ksp/.gitignore b/external/ksp/.gitignore
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/external/ltp/tools/runltp-ng/.gitignore b/external/ltp/tools/runltp-ng/.gitignore
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/external/rust/cxx/tools/buck/prelude/.gitignore b/external/rust/cxx/tools/buck/prelude/.gitignore
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/external/uvc-gadget/.gitignore b/external/uvc-gadget/.gitignore
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/packages/modules/Cronet/.gitignore b/packages/modules/Cronet/.gitignore
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/packages/modules/NetworkPermissionConfig/.gitignore b/packages/modules/NetworkPermissionConfig/.gitignore
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/packages/modules/TestModule/.gitignore b/packages/modules/TestModule/.gitignore
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/packages/wallpapers/ImageWallpaper/.gitignore b/packages/wallpapers/ImageWallpaper/.gitignore
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/prebuilts/module_sdk/DeviceLock/.gitignore b/prebuilts/module_sdk/DeviceLock/.gitignore
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/system/iorap/.gitignore b/system/iorap/.gitignore
new file mode 100644
index 00000000000..e69de29bb2d