diff --git a/Platform/Raspi4B/.gitignore b/Platform/Raspi4B/.gitignore
new file mode 100644
index 0000000..c8729b1
--- /dev/null
+++ b/Platform/Raspi4B/.gitignore
@@ -0,0 +1,2 @@
+
+GCC/
diff --git a/Platform/Raspi4B/Raspi-Toolchain.cmake b/Platform/Raspi4B/Raspi-Toolchain.cmake
new file mode 100644
index 0000000..c9a30f7
--- /dev/null
+++ b/Platform/Raspi4B/Raspi-Toolchain.cmake
@@ -0,0 +1,37 @@
+get_filename_component(CURRENT_LIST_DIR ${CMAKE_CURRENT_LIST_FILE} DIRECTORY)
+
+# 定义目标目录和压缩文件
+set(GCC_VERSION   "gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf")
+set(GCC_DIRECTORY "${CURRENT_LIST_DIR}/GCC")
+set(ARCHIVE_FILE  "${CURRENT_LIST_DIR}/${GCC_VERSION}.tar")
+
+# 检查目录是否存在
+execute_process(
+  COMMAND test -d  "${GCC_DIRECTORY}"
+  RESULT_VARIABLE DIRECTORY_EXISTS
+)
+
+# 如果目录不存在，则解压
+if(NOT DIRECTORY_EXISTS EQUAL 0)
+  execute_process(
+    COMMAND mkdir -p "${GCC_DIRECTORY}"
+    COMMAND tar xf "${ARCHIVE_FILE}" -C "${GCC_DIRECTORY}" --strip-components=1
+    RESULT_VARIABLE TAR_RESULT
+  )
+  if(TAR_RESULT)
+    message(FATAL_ERROR "Failed to extract archive file.")
+  endif()
+endif()
+
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR arm)
+
+set(CMAKE_C_COMPILER      ${GCC_DIRECTORY}/bin/arm-linux-gnueabihf-gcc)
+set(CMAKE_CXX_COMPILER    ${GCC_DIRECTORY}/bin/arm-linux-gnueabihf-g++)
+set(CMAKE_SYSROOT         ${GCC_DIRECTORY}/bin/../arm-linux-gnueabihf/libc)
+#set(CMAKE_STAGING_PREFIX ${HOME}/recycle/stage)
+
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
diff --git a/Platform/Raspi4B/gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu.tar b/Platform/Raspi4B/gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu.tar
new file mode 100755
index 0000000..2431363
Binary files /dev/null and b/Platform/Raspi4B/gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu.tar differ
diff --git a/Platform/Raspi4B/gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf.tar b/Platform/Raspi4B/gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf.tar
new file mode 100755
index 0000000..132b7dc
Binary files /dev/null and b/Platform/Raspi4B/gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf.tar differ
diff --git a/ReadMe.md b/ReadMe.md
index 6b18104..6d68be0 100644
--- a/ReadMe.md
+++ b/ReadMe.md
@@ -26,7 +26,7 @@ make all
 ```
 
 
-## 项目示例 
+## 项目示例
 
 ### F5Plus + PN5180
 
@@ -34,8 +34,15 @@ make all
 cmake -DBUS_SPIUserMode=ON -DFRONTEND_PN5180=ON -DFRONTEND_PN5190=OFF -DCMAKE_EXPORT_COMPILE_COMMANDS=True --toolchain ../Platform/F5Plus/F5Plus-Toolchain.cmake ../
 ```
 
-### Raspi4B + PN5180 
+### Raspi4B + PN5180
 
 ```shell
-cmake -DBUS_SPIUserMode=ON -DFRONTEND_PN5180=ON -DFRONTEND_PN5190=OFF -DCMAKE_EXPORT_COMPILE_COMMANDS=True --toolchain ../Platform/Raspi4B/F5Plus-Toolchain.cmake ../
+mkdir -p output && cd output/
+
+cmake -DBUS_SPIUserMode=ON -DFRONTEND_PN5180=ON -DFRONTEND_PN5190=OFF -DCMAKE_EXPORT_COMPILE_COMMANDS=True --toolchain ../Platform/Raspi4B/Raspi-Toolchain.cmake ../
 ```
+#### 工具链
+
+- 用户程序，32位：[gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf.tar.xz](https://releases.linaro.org/components/toolchain/binaries/latest-7/arm-linux-gnueabihf/gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf.tar.xz);
+- 内核编译，64位：[gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu.tar.xz](https://releases.linaro.org/components/toolchain/binaries/latest-7/aarch64-linux-gnu/gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu.tar.xz)
+