明远智睿IMX6Q Android4.4.2移植USBWIFI(RTL8188EUS)

移植过程中得到网友的不少帮助，很感谢!为了让更多的网友不像我这样折腾，特写此文以做参照.过程中主要参考< Realtek_Wi-Fi_SDK_for_Android_KK_4_4.pdf >和< Quick_Start_Guide_for_Driver_Compilation_and_Installation.pdf>这两个文档，以及论坛https://community.freescale.com/thread/322825 这篇文章，具体步骤如下：

一．内核修改

1．替换realtek文件夹

”realtek_wifi_SDK_for_android_KK_4.4_20140117.tar.gz” 解压，然后将ANDROID_SDK /hardware/realtek覆盖到源码kernel_imx/hardwar中.

2. BoardConfig.mk

在ANDROID_SDK /device/ fsl/sabresd_6dq/ BoardConfig.mk中，追加如下内容：

BOARD_WIFI_VENDOR := realtek

BOARD_WLAN_VENDOR := REALTEK

ifeq ($(BOARD_WIFI_VENDOR),realtek)

WPA_SUPPLICANT_VERSION :=VER_0_8_X

BOARD_WPA_SUPPLICANT_DRIVER :=NL80211

#CONFIG_DRIVER_WEXT :=y

CONFIG_DRIVER_NL80211 :=true

BOARD_WPA_SUPPLICANT_PRIVATE_LIB:= lib_driver_cmd_rtl

BOARD_HOSTAPD_DRIVER := NL80211

BOARD_HOSTAPD_PRIVATE_LIB :=lib_driver_cmd_rtl

BOARD_WLAN_DEVICE := rtl8192cu

#BOARD_WLAN_DEVICE := rtl8192du

#BOARD_WLAN_DEVICE := rtl8192ce

#BOARD_WLAN_DEVICE := rtl8192de

#BOARD_WLAN_DEVICE := rtl8723as

#BOARD_WLAN_DEVICE := rtl8723au

#BOARD_WLAN_DEVICE := rtl8189es

#BOARD_WLAN_DEVICE := rtl8723bs

#BOARD_WLAN_DEVICE := rtl8723bu

WIFI_DRIVER_MODULE_NAME :="wlan"

WIFI_DRIVER_MODULE_PATH := "/system/lib/modules/wlan.ko"

WIFI_DRIVER_MODULE_ARG :="ifname=wlan0 if2name=p2p0"

WIFI_FIRMWARE_LOADER :=""

WIFI_DRIVER_FW_PATH_STA :=""

WIFI_DRIVER_FW_PATH_AP :=""

WIFI_DRIVER_FW_PATH_P2P :=""

WIFI_DRIVER_FW_PATH_PARAM :=""

Endif

3. init.rc

在ANDROID_SDK /device/ fsl/sabresd_6dq/init.rc中

A.    替换如下wpa_supplican服务

service rtw_suppl_con /system/bin/wpa_supplicant \

-ip2p0 -Dnl80211-c/data/misc/wifi/p2p_supplicant.conf \

-e/data/misc/wifi/entropy.bin -N\

-iwlan0 -Dnl80211-c/data/misc/wifi/wpa_supplicant.conf \

-O/data/misc/wifi/sockets \

-g@android:wpa_wlan0

class main

socket wpa_wlan0 dgram 660 wifiwifi

disabled

oneshot

service rtw_suppl/system/bin/wpa_supplicant \

-iwlan0 -Dnl80211-c/data/misc/wifi/wpa_supplicant.conf \

-O/data/misc/wifi/sockets \

-e/data/misc/wifi/entropy.bin

-g@android:wpa_wlan0

class main

socket wpa_wlan0 dgram 660 wifiwifi

disabled

oneshot

B.    追加DHCPCD服务

service dhcpcd_wlan0 /system/bin/dhcpcd -aABDKL

class main

disabled

oneshot

service dhcpcd_p2p/system/bin/dhcpcd -aABKL

class main

disabled

oneshot

service iprenew_wlan0/system/bin/dhcpcd -n

class main

disabled

oneshot

service iprenew_p2p/system/bin/dhcpcd -n

class main

disabled

oneshot

4. libhardware_legacy

在文件ANDROID_SDK/hardware/libhardware_legacy/wifi/Android.mk 中变更如下语句

ifeq ($(BOARD_WIFI_VENDOR),realtek)

LOCAL_SRC_FILES +=../realtek/wlan/libhardware_legacy/wifi/wifi_realtek.c

else

LOCAL_SRC_FILES += wifi/wifi.c

Endif

5. wpa_supplicant_8

将ANDROID_SDK/external/下wpa_supplicant_8备份一下，然后将驱动包里的wpa_supplicant_8_kk_4.4_rtw名称改为wpa_supplicant_8并替换到ANDROID_SDK/external/

6.imx6_android_defconfig

修改文件kernel_imx/arch/arm/configs/imx6_android_defconfig，将下列项目配置成Y.

CONFIG_CFG80211=y

CONFIG_MAC80211_MESH=y

CONFIG_MAC80211=y

CONFIG_HOSTAP=y

CONFIG_RTL8192CU=y

CONFIG_USB_USBNET=y

7.权限

在out/target/product/sabresd_6dq/root/init.rc中，追加内容如下：

mkdir /system/etc/wifi 0770 wifi wifi

chmod 0770 /system/etc/wifi

chmod 0660 /system/etc/wifi/wpa_supplicant.conf

chown wifi wifi /system/etc/wifi/wpa_supplicant.conf

#wpa_supplicant control socket for android wifi.c (android privatesocket)

mkdir /data/misc/wifi 0770 wifi wifi

mkdir /data/misc/wifi/sockets 0770 wifi wifi

chmod 0770 /data/misc/wifi

chmod 0660 /data/misc/wifi/wpa_supplicant.conf

chown wifi wifi /data/misc/wifi

chown wifi wifi /data/misc/wifi/wpa_supplicant.conf

setprop wifi.interface wlan0

setprop wlan.driver.status"ok"

8．文件夹删除

out/target/product/sabresd_6dq下的system文件夹以及out/target/product/sabresd_6d/obj/EXECUTABLES下wpa_supplicant_intermediates文件夹删除.

完成以上后，编译内核.

二．驱动编译

1．新驱动包4.3.0.9没有make_drv和autoconf_rtl8188e_usb_linux.h，需要从其他的驱动包中拷过来.

2.增加新的平台

CONFIG_PLATFORM_I386_PC = n

CONFIG_PLATFORM_NEW = y

……

ifeq($(CONFIG_PLATFORM_NEW), y)

EXTRA_CFLAGS +=-DCONFIG_LITTLE_ENDIAN

ARCH := arm

CROSS_COMPILE :=/opt/ new/toolchain/arm-eabi-4.4.3/bin/arm-eabi-

KSRC := /opt/new/kernel

MODULE_NAME := wlan

Endif

3. include/autoconf.h和autoconf_rtl8188e_usb_linux.h修改

#define CONFIG_IOCTL_CFG80211

#ifdef CONFIG_IOCTL_CFG80211

#define RTW_USE_CFG80211_STA_EVENT

//#defineCONFIG_CFG80211_FORCE_COMPATIBLE_2_6_37_UNDER

//#define CONFIG_DEBUG_CFG80211 1

#endif

…

#define CONFIG_CONCURRENT_MODE

…

#define CONFIG_P2P_IPS

4.将编译完成内核，将kernel_imx目录下Module.symvers文件到驱动的根目录覆盖之前的文件.

5.编译

A. make_drv

root@rtl8188C_8192C_8192D_usb_linux_v3.3.0_2920.20111123#./make_drv

Please select chip type(1/2):

1) RTL8192cu

2) RTL8192du

#? 1

You have selected RTL8192cu

B.      在驱动根目录下，执行make，然后在目录下产生wlan.ko文件

三．            驱动安装与再编译

1．将产生的wlan.ko文件，复制到out/target/product/sabresd_6dq/system/lib/modules文件夹中。（没有modules文件夹，自己新建）

2．使用make snod命令重新制作system.img

注意事项：

注意要先编译安卓，再去编译8188eus的驱动