a
diff --git a/README.md b/README.md
index 34b9a05..b155839 100644
--- a/README.md
+++ b/README.md
@@ -1,12 +1,10 @@
-# Caravel User Project
+# RIOS Lab GreenRio1.0 RISC-V Processor GF180 Version
[](https://opensource.org/licenses/Apache-2.0) [](https://github.com/efabless/caravel_project_example/actions/workflows/user_project_ci.yml) [](https://github.com/efabless/caravel_project_example/actions/workflows/caravel_build.yml)
| :exclamation: Important Note |
|-----------------------------------------|
-## Please fill in your project documentation in this README.md file
+It's a GF180-based openMPW project. We try to tape out our GreenRio1.0 at 180nm process. For more infomation, you can access:[rioschip](https://github.com/b224hisl/rioschip).
-Refer to [README](docs/source/index.rst#section-quickstart) for a quickstart of how to use caravel_user_project
-Refer to [README](docs/source/index.rst) for this sample project documentation.
diff --git a/env.sh b/env.sh
new file mode 100644
index 0000000..43498b6
--- /dev/null
+++ b/env.sh
@@ -0,0 +1,21 @@
+# SPDX-FileCopyrightText: 2022 RIOSLab
+#
+# 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+export OPENLANE_ROOT=$(pwd)/dependencies/openlane_src # you need to export this whenever you start a new shell
+export PDK_ROOT=$(pwd)/dependencies/pdks # you need to export this whenever you start a new shell
+# export the PDK variant depending on your shuttle, if you don't know leave it to the default
+# for the gf180 GFMPW shuttles...
+export PDK=gf180mcuC
+export CARAVEL_ROOT=$(pwd)/caravel
\ No newline at end of file
