updated README

README.md

@@ -1,2 +1,74 @@
-# tvip-axi
-AMBA AXI VIP
+# TVIP-AXI
+
+TVIP-AXI is an UVM package of AMBA AXI4 VIP.
+
+## Feature
+
+* Master and slave agent
+* Highly configurable
+    * address width
+    * data width
+    * ID width
+    * etc.
+* Support delayed write data and response
+* Support gapped write data and read response
+* Response ordering
+    * in-order response
+    * out of order response
+* Support read interleave
+
+## Sample Environment
+
+The sample environment is included. The execution procedure is as following.
+
+### Preparation
+
+Before executing the sample environment, you need to clone submodules. Hit command below on the root directory of TVIP-AXI.
+
+    $ ./setup_submodules.sh
+
+### Execution
+
+To execute the sample environment, hit commands below on the `sample/work` directory.
+
+    $ make
+
+Then, all sample test cases will be executed.
+
+You want to execute a test case individually, hit command below.
+
+    $ make NAME_OF_TEST_CASE
+
+Followings are available test cases:
+
+* default
+* write_data_delay
+    * sample for gapped write data
+* response_start_delay
+    * sample for delayed response
+* response_delay
+    * sample for gapped read response
+* out_of_order_response
+    * sample for out of order response
+* read_interleave
+    * sample for read interleave
+
+### Supported Simulator
+
+Supported simulators are below:
+
+* Synopsys VCS
+* Cadence Xcelium
+    * Makefile for Xcelium simulator is not available
+
+## Contact
+
+If you have any questions, problems, feedbacks, etc., you can post them on following ways:
+
+* Create an issue on the [issue tracker](https://github.com/taichi-ishitani/tvip-axi/issues)
+* Send mail to [[email protected]](mailto:[email protected])
+
+## Copyright
+
+Copyright (C) 2018 Taichi Ishitani.
+TVIP-AXI is licensed under the Apache-2.0 license. See [LICENSE](LICENSE) for further details.