diff --git a/.gitattributes b/.gitattributes
index 113a2a6..f48d7e5 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -15,5 +15,9 @@
 *.gz filter=lfs diff=lfs merge=lfs -text
 *.xz filter=lfs diff=lfs merge=lfs -text
 *.7z filter=lfs diff=lfs merge=lfs -text
+# images
+*.png filter=lfs diff=lfs merge=lfs -text
+*.jpg filter=lfs diff=lfs merge=lfs -text
+*.jpeg filter=lfs diff=lfs merge=lfs -text
 # others
 *.pdf filter=lfs diff=lfs merge=lfs -text
diff --git a/README.md b/README.md
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--- /dev/null
+++ b/README.md
@@ -0,0 +1,25 @@
+# README.md
+
+本仓库包含 HSJL 信处板的硬件驱动工程和生产文件。
+
+## 驱动工程说明
+
+- `sjl_basic`：适用于 U1，控制 AD9528 和两片 AD9361，主要负责物理层处理。
+
+- `sjl_ad9653`：适用于 U4，控制 AD9653，可以选通控制 AD9528（默认 DNP），主要负责空域抗干扰。
+
+## 板卡说明
+
+板卡搭载 2 片 XC7Z100-FFG900-2，1 片 AD9528，2 片 AD9361（共使用 1 个发射通道和 3 个接收通道），1 片 AD9653，所有芯片均按照全国产替代设计。
+
+![板卡正面](board_file/pic/pic-01.png){width=800px}
+
+![板卡背面](board_file/pic/pic-02.png){width=800px}
+
+## 项目依赖
+
+- [embedded-autobuild](https://git.gatsby.icu/gatsby/embedded-autobuild): 自动编译 Xilinx SDK/Vitis 工程。
+
+  - **请注意**：使用 Windows 时为了节省运行时间，工程在拉取时并没有进行编译，在打开 SDK/Vitis 后需要额外手动编译。
+
+  - **请注意**：Windows系统文件路径长度有限值，若出现异常编译错误，请尝试修改 `autobuild.bat` 中的 `work_dir` 路径或者 `config.json` 中的 `project_name` 和 `<app_name>`。
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