- 进入package目录，创建模块目录
cd mcp/branches/V1.1-beta1/mcp/package
mkdir example
- 进入example目录，创建Makefile文件和代码路径
- cd example
- touch Makefile
- mkdir src
Makefile具体内容如下：
- # Kernel module example
- include $(TOPDIR)/rules.mk
- include $(INCLUDE_DIR)/kernel.mk
- PKG_NAME:=example
- PKG_RELEASE:=1
- include $(INCLUDE_DIR)/package.mk
-
- define KernelPackage/example
- SUBMENU:=Other modules
- DEPENDS:=@TARGET_octeon
- TITLE:=Support Module for example
- AUTOLOAD:=$(call AutoLoad,81,example)
- FILES:=$(PKG_BUILD_DIR)/example/example.$(LINUX_KMOD_SUFFIX)
- endef
-
- define Build/Prepare
- mkdir -p $(PKG_BUILD_DIR)
- $(CP) -R ./src/* $(PKG_BUILD_DIR)/
- endef
-
- define Build/Compile
- $(MAKE) -C "$(LINUX_DIR)" \
- CROSS_COMPILE="$(TARGET_CROSS)" \
- ARCH="$(LINUX_KARCH)" \
- SUBDIRS="$(PKG_BUILD_DIR)/example" \
- EXTRA_CFLAGS="-g $(BUILDFLAGS)" \
- modules
- endef
-
- $(eval $(call KernelPackage,example))
３．进入src目录，创建代码路径和相关源文件
- cd src
- mkdir example
- cd example
- touch example.c Kconfig Makefile
example.c具体内容如下:
- #include <linux/init.h>
- #include <linux/module.h>
- #include <linux/kernel.h>
-
- /* hello_init ---- 初始化函数，当模块装载时被调用，如果成功装载返回0 否则返回非0值 */
- static int __init hello_init(void)
- {
- printk("I bear a charmed life.\n");
- return 0;
- }
-
- / * hello_exit ---- 退出函数，当模块卸载时被调用 */
- static void __exit hello_exit(void)
- {
- printk("Out, out, brief candle\n");
- }
-
- module_init(hello_init);
- module_exit(hello_exit);
-
- MODULE_LICENSE("GPL");
- MODULE_AUTHOR("zhangjiefeng");
Kconfig具体内容如下：
- config EXAMPLE
- tristate "Just a example"
- default n
- help
- This is a example, for debugging kernel model.
- If unsure, say N.
Makefile具体内如如下：
回到主路径 mcp/branches/V1.1-beta1/mcp/，编译选项配置保存并编译
- make menuconfig
- Kernel modules --->
- Other modules --->
- kmod-example
选项设置为M，保存退出
然后编译该模块：
- make package/example/compile
５．编译出的文件可以在主路径的以下路径找到
- ./staging_dir/target-mips64_eglibc-2.10.1/root-octeon/lib/modules/2.6.30.9/
- ./build_dir/linux-octeon/example/ipkg-octeon/kmod-example/lib/modules/2.6.30.9/
- ./build_dir/linux-octeon/example/example/
文件名为：example.ko
注：我们使用./build_dir/linux-octeon/example/example/example.ko
二、用户态工具添加方法
１．进入package目录，创建工具目录
- cd mcp/branches/V1.1-beta1/mcp/package
- mkdir example1
２．进入example1目录，创建Makefile文件和代码路径
- cd example1
- touch Makefile
- mkdir src
该Makefile具体内容如下：
- #User mode tool example
- include $(TOPDIR)/rules.mk
- include $(INCLUDE_DIR)/kernel.mk
- PKG_NAME:=example1
- PKG_RELEASE:=1
- PKG_BUILD_DIR := $(KERNEL_BUILD_DIR)/$(PKG_NAME)
- include $(INCLUDE_DIR)/package.mk
-
- define Package/example1
- SECTION:=utils
- CATEGORY:=Base system
- TITLE:=Build for example1 commands
- endef
-
- define Package/example1/description
- This package contains an utility useful to use example1 commands.
- endef
-
- define Build/Prepare
- mkdir -p $(PKG_BUILD_DIR)
- $(CP) ./src/* $(PKG_BUILD_DIR)/
- endef
-
- target=$(firstword $(subst -, ,$(BOARD)))
- MAKE_FLAGS += TARGET="$(target)"
- TARGET_CFLAGS += -Dtarget_$(target)=1 -Wall
-
- define Build/example1/compile
- $(MAKE) -C "$(LINUX_DIR)" \
- CROSS_COMPILE="$(TARGET_CROSS)" \
- ARCH="$(LINUX_KARCH)" \
- SUBDIRS="$(PKG_BUILD_DIR)" \
- EXTRA_CFLAGS="$(BUILDFLAGS)"
- endef
-
- define Package/example1/install
- $(INSTALL_DIR) $(1)/sbin
- $(INSTALL_BIN) $(PKG_BUILD_DIR)/example1 $(1)/sbin/
- endef
-
- $(eval $(call BuildPackage,example1))
３．进入src目录，创建相关源文件
- cd src
- touch example１.c Makefile
example１.c 具体内容如下：
- #include <stdio.h>
- int main(void)
- {
- printf("Hello, world\n");
- return 0;
- }
Makefile文件具体内容如下：
- .NOTPARALLEL:
- #OCTEON_ROOT=$(PWD)/src/
- CC=~/openwrt/main/staging_dir/toolchain-mips64_gcc-4.4.1_eglibc-2.10.1/usr/bin/mips64-openwrt-linux-gnu-gcc
- CFLAGS=-mips64r2 -mabi=64 -march=octeon -mtune=octeon
- LFLAGS=
- .PHONY: all
- all: example1
- example1:example1.c
- ${CC} ${CFLAGS} ${LFLAGS} -W -g -Wall -Wno-unused-parameter -DUSE_RUNTIME_MODEL_CHECKS=1 \
- -o $@ example1.c
４．回到主路径 mcp/branches/V1.1-beta1/mcp/，编译选项配置保存并编译
- make menuconfig
- Base system --->
- example1
选项设置为M，保存退出
然后编译该模块：
- make package/example1/compile
５．编译出的文件可以在主路径的以下路径找到
- ./staging_dir/target-mips64_eglibc-2.10.1/root-octeon/sbin/
- ./build_dir/linux-octeon/example1/ipkg-octeon/example1/sbin/
- ./build_dir/linux-octeon/example1/
文件名为：example1
注：我们使用./build_dir/linux-octeon/example1/example1
根据OpenWrt安装介绍，将内核模块和用户态工具在板子上运行，到这就简单了往下我就不贴了。
