嵌入式Linux USB WIFI驱动的移植

硬件平台：飞思卡尔MX258开发板操作系统：Linux2.6.31WIFI： RT2860 USB WIFI模组交叉编译环境：gcc version 4.1.2 调试步骤：第一步：测试USB HOST接口在menuconfig中将USB HOST设置为内核模式：重新编译内核后启动开发板，插入U盘并挂载：mount /dev/sda1 /tmpls /tmp可以看到U盘已经正常挂载，测试USB HOST OK！第二步：网上下载雷凌最新的USB驱动，2011_0107_RT3070_RT3370_Linux_STA_v2[1].5.0.1_DPO.tar.bz2拷备到Linux目录并解压：tar jxf 2011_0107_RT3070_RT3370_Linux_STA_v2[1].5.0.1_DPO.tar.bz2由于上面名字很长，可以修改为简短的名字：mv 2011_0107_RT3070_RT3370_Linux_STA_v2[1].5.0.1_DPO RT3070_Linux_STA第三步：进入RT3070_Linux_STA目录，看到有一个README_STA_usb文件，里面介绍了如何加载该驱动：=======================================================================Build Instructions: ==================== 1> $tar -xvzf DPB_RT2870_Linux_STA_x.x.x.x.tgz go to "./DPB_RT2870_Linux_STA_x.x.x.x" directory. 2> In Makefile set the "MODE = STA" in Makefile and chose the TARGET to Linux by set "TARGET = LINUX" define the linux kernel source include file path LINUX_SRC modify to meet your need. 3> In os/linux/config.mk define the GCC and LD of the target machine define the compiler flags CFLAGS modify to meet your need. ** Build for being controlled by NetworkManager or wpa_supplicant wext functions Please set "HAS_WPA_SUPPLICANT=y" and "HAS_NATIVE_WPA_SUPPLICANT_SUPPORT=y". => #>cd wpa_supplicant-x.x => #>./wpa_supplicant -Dwext -ira0 -c wpa_supplicant.conf -d ** Build for being controlled by WpaSupplicant with Ralink Driver Please set "HAS_WPA_SUPPLICANT=y" and "HAS_NATIVE_WPA_SUPPLICANT_SUPPORT=n". => #>cd wpa_supplicant-0.5.7 => #>./wpa_supplicant -Dralink -ira0 -c wpa_supplicant.conf -d 4> $make # compile driver source code # To fix "error: too few arguments to function ˉiwe_stream_add_event" => $patch -i os/linux/sta_ioctl.c.patch os/linux/sta_ioctl.c 5> $cp RT2870STA.dat /etc/Wireless/RT2870STA/RT2870STA.dat 6> load driver, go to "os/linux/" directory. #[kernel 2.4] # $/sbin/insmod rt2870sta.o # $/sbin/ifconfig ra0 inet YOUR_IP up #[kernel 2.6] # $/sbin/insmod rt2870sta.ko # $/sbin/ifconfig ra0 inet YOUR_IP up 7> unload driver $/sbin/ifconfig ra0 down $/sbin/rmmod rt2870sta这里go to "./DPB_RT2870_Linux_STA_x.x.x.x" directory.即我们刚解压的RT3070_Linux_STA目录。修改该目录下的makefile文件，以下只给出修改部分：#PLATFORM = PCPLATFORM = RALINK_2880 ifeq （$（PLATFORM）, RALINK_2880）LINUX_SRC = /home/lqm/share/G360/kernel_kfbCROSS_COMPILE = /opt/freescale/usr/local/gcc-4.1.2-glibc-2.5-nptl-3/arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi-endififeq （$（RT28xx_MODE）,APSTA） cp -f $（RT28xx_DIR）/os/linux/rt$（CHIPSET）apsta.ko /tftpbootifeq （$（OSABL）,YES） cp -f $（RT28xx_DIR）/os/linux/rtutil$（CHIPSET）apsta.ko /tftpboot cp -f $（RT28xx_DIR）/os/linux/rtnet$（CHIPSET）apsta.ko /tftpbootendifelse cp -f $（RT28xx_DIR）/os/linux/rt$（CHIPSET）sta.ko /home/lqm/share/NFS/tmp注意，虽然我们使用的是2860模组，我们这里仍然可以定义PLATFORM为RALINK_2880，只要后面对应的编译环境正确就可以了。LINUX_SRC表示内核的目录，CORSS_COMPILE为交叉编译环境，最末一行为编译完后将生成的KO文件复制到NFS文件系统的tmp目录。第四步：按照第三步README_STA_usb给出的提示，修改config.mk文件，这里也只给出修改部分：# Support Wpa_SupplicantHAS_WPA_SUPPLICANT=y# Support Native WpaSupplicant for Network MagangerHAS_NATIVE_WPA_SUPPLICANT_SUPPORT=nCC := /opt/freescale/usr/local/gcc-4.1.2-glibc-2.5-nptl-3/arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi-gccLD := /opt/freescale/usr/local/gcc-4.1.2-glibc-2.5-nptl-3/arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi-ldifeq （$（PLATFORM）, RALINK_2880）EXTRA_CFLAGS := -D__KERNEL__ -I$（LINUX_SRC）/include -I$（RT28xx_DIR）/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -Uarm -fno-common -pipe -D__LINUX_ARM_ARCH__=5 -march=armv5te -msoft-float -Uarm -DMODULE -DMODVERSIONS -include $（LINUX_SRC）/include/config/modversions.h $（WFLAGS）export EXTRA_CFLAGSendif注意，这里CC为交叉编译环境，LD为交叉编译的链接。默认EXTRA_CFLAGS为CFLAGS，这里需要修改为EXTRA_CFLAGS，否则编译时会提示如下错误：scripts/Makefile.build:49: *** CFLAGS was changed in "/home/lqm/share/RT3070_Linux_STA/os/linux/Makefile". Fix it to use EXTRA_CFLAGS。停止。LINUX_ARM_ARCH一定要设置为5，-march一定要设置得和CPU匹配，由于这里为MX258，因此设置为armv5te，不可设置为armv5t或armv5，否则出现如下错误： CC [M] /home/lqm/share/RT3070_Linux_STA/os/linux/../../os/linux/rt_main_dev.o{standard input}: Assembler messages:{standard input}:340: Error: selected processor does not support `pld [r5,#0]"{standard input}:349: Error: selected processor does not support `pld [r5,#0]"make[2]: *** [/home/lqm/share/RT3070_Linux_STA/os/linux/../../os/linux/rt_main_dev.o] 错误 1make[1]: *** [_module_/home/lqm/share/RT3070_Linux_STA/os/linux] 错误 2make[1]: Leaving directory `/home/lqm/share/G360/kernel_kfb"make: *** [LINUX] 错误 2[root@lqm RT3070_Linux_STA]#