Linux 内核编译配置

日期: 2013年12月30日标签: 硬件

内核配置

make menuconfig 或者make ARCH=arm menuconfig
编译

make kernel.img
清除编译的东西

make clean

linux 内核支持adk

有人在要配置adk时，发现在android 设备中的/proc/找不到config.gz,那是在编译内核的时候，没有勾选Enable access to .config through /proc/config.gz

进入android kernel目录，make menuconfig 或者make ARCH=arm menuconfig
```
       General setup  --->
             Kernel .config support
                  [*] Enable access to .config through /proc/config.gz
```
在该栏目中按y 即可。

adk支持（本身是不显示的）

 add: ADB Garget /drives/usb/gadget/
 CONFIG_USB_ANDROID    (android.c)
 CONFIG_USB_ANDROID_ACM   (f_acm.c u_serial.c)
 CONFIG_USB_ANDROID_ADB   (f_adb.c)
 CONFIG_USB_ANDROID_MASS_STORAGE (f_mass_storage.c)
 CONFIG_USB_ANDROID_MTP   (f_mtp.c)
 CONFIG_USB_ANDROID_RNDIS     (f_rndis.c u_ether.c)
 CONFIG_USB_ANDROID_ACCESSORY (f_accessory.c)

 Device Drivers  --->
         [*] USB support  --->
             <*> USB Gadget Support  --->
                 <*> USB Gadget Drivers (Android Gadget)  --->
                     [X]       Android gadget

将以上的.c文件下载后放入，drives/usb/gadget中

          vi ./Kconfig

将入以下配置加入Kconfig中

config USB_ANDROID_ACM
     boolean "Android gadget ACM serial function"
     depends on USB_ANDROID
     help
       Provides ACM serial function for android gadget driver.
config USB_ANDROID_ADB
    boolean "Android gadget adb function"
    depends on USB_ANDROID
    help
       Provides adb function for android gadget driver.
config USB_ANDROID_MASS_STORAGE
    boolean "Android gadget mass storage function"
    depends on USB_ANDROID && SWITCH
    help
      Provides USB mass storage function for android gadget driver.
config USB_ANDROID_MTP
    boolean "Android MTP function"
    depends on USB_ANDROID
    help
      Provides Media Transfer Protocol (MTP) support for android gadget driver.
config USB_ANDROID_RNDIS
    boolean "Android gadget RNDIS ethernet function"
    depends on USB_ANDROID
    help
       Provides RNDIS ethernet function for android gadget driver.
config USB_ANDROID_RNDIS_WCEIS
    boolean "Use Windows Internet Sharing Class/SubClass/Protocol"
    depends on USB_ANDROID_RNDIS
    help
      Causes the driver to look like a Windows-compatible Internet
      Sharing device, so Windows auto-detects it.
      If you enable this option, the device is no longer CDC ethernet
      compatible.
config USB_ANDROID_RNDIS_DWORD_ALIGNED
    boolean "Use double word aligned"
    depends on USB_ANDROID_RNDIS
    help
       Provides dword aligned for DMA controller.
config USB_ANDROID_ACCESSORY
    boolean "Android USB accessory function"
    depends on USB_ANDROID
    help
        Provides Android USB Accessory support for android gadget driver.

看到以上你们可能就明白了，这些配置都是依赖于usb_android的当usb_android选中他们的config就=y了！然后在Makefile中加入

    obj-$(CONFIG_USB_ANDROID) += android.o
    obj-$(CONFIG_USB_ANDROID_ACM) += f_acm.o u_serial.o
    obj-$(CONFIG_USB_ANDROID_ADB) += f_adb.o
    obj-$(CONFIG_USB_ANDROID_MASS_STORAGE) += f_mass_storage.o
    obj-$(CONFIG_USB_ANDROID_MTP) += f_mtp.o
    obj-$(CONFIG_USB_ANDROID_RNDIS) += f_rndis.o u_ether.o
    obj-$(CONFIG_USB_ANDROID_ACCESSORY) += f_accessory.o

判断设备是否支持adk

adb pull /proc/config.gz

然后打开，应该会有以下字段

ezgb_ebi0_defconfig:CONFIG_USB_ANDROID_ACCESSORY=y
ezgb_2708_defconfig:CONFIG_USB_ANDROID_ACCESSORY=y
ezgb_ebi1_defconfig:CONFIG_USB_ANDROID_ACCESSORY=y

另外需要在system/framework/下 com.android.future.usb.accessory.jar，
/etc/permissions/下 android.hardware.usb.accessory.xml

内核支持动态加载模块

参考网页

demokit原理 [环境搭建][http://blog.csdn.net/slugzoe/article/details/6897534] 原理 andoird jb源码支持adk的机子内核源代码

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