内核与驱动编译方法

驱动编译有两种方法:

1. 编译到内核中

2. 编译为独立模块

建立方法:

  1) 在linux源码树的驱动目录增加自己的驱动目录,比如:现在新增一个网络设备驱动

    mkdir linux_tree/drivers/net/poker_driver -p

    cd linux_tree/drivers/net/poker_driver

  2) 编写驱动源码

    vi  poker_drv_part1.c

    vi  poker_drv_part2.c

    vi  poker_drv_part3.c

  3) 编写源码目录Kconfig

    vi Kconfig

      config POKER_DRV
      tristate "poker_driver support"
      default n
      ---help---
      If you say Y here, the kernel will support poker_driver.
      If you say M here, the kernel not support poker_driver, must perform "insmod poker_driver.ko".
      If you say N here, the kernel not support poker_driver.

  4) 编写源码目录Makefile

    vi Makefile

      obj-$(CONFIG_POKER_DRV) += poker_drv.o
      poker_drv-objs += poker_drv_part1.o poker_drv_part2.o poker_drv_part3.o

  5) 修改上级Kconfig

    vi linux_tree/drivers/net/Kconfig

      source "drivers/net/poker_driver/Kconfig"

  6) 修改上级Makefile

     vi linux_tree/drivers/net/Makefile

      obj-$(CONFIG_POKER_DRV) += poker_driver/

  7) 配置内核

    make menuconfig

      Device Drivers  --->

         [*] Network device support  ---> 

          <>poker_driver support

1. 编译到内核中:

  <*>poker_driver support

  linux_tree# make uImage

2. 编译为独立模块

  <M>poker_driver support 

  linux_tree# make modules

括号问题:

  []   可选项 * 空

  <> 可选项 * M 空

Kconfig语法:

Makefile语法:

未完待续....

原文地址:https://www.cnblogs.com/pokerface/p/5780159.html