RT3070驱动移植
无线网卡为RT3070，驱动分为STA驱动和SoftAP驱动两种，STA驱动支持无线网卡工作在STA模式下，而SoftAP的驱动支持无线网卡工作在软AP的模式下，可以作为一个软的接入点。STA驱动为2010_0831_RT3070_Linux_STA_v2.3.0.0_DPO.bz2。SoftAP的驱动是：2010_0203_RT3070_SoftAP_v2.4.0.1_DPA.bz2。需要移植STA驱动和SoftAP驱动，两款驱动的移植步骤差不多。下边首先对STA驱动进行移植。
STA驱动的移植
#tar jxvf 2010_0831_RT3070_Linux_STA_v2.3.0.0_DPO.bz2
cd 2010_0831_RT3070_Linux_STA_v2.3.0.0_DPO
修改原有的Makefile文件如下（只给出需要修改的部分，“-”表示删除的行，“+”表示添加的行）：
RT28xx_MODE = STA
TARGET = LINUX
CHIPSET = 3070
-PLATFORM = PC
+PLATFORM = IXP（选择与自己相似的平台修改，下面修改对应选项）
ifeq ($(PLATFORM),IXP)
-LINUX_SRC = /project
-CROSS_COMPILE = arm-linux-
+LINUX_SRC = /home/Embest_SAM9G45/linux-2.6.30（内核目录）
+CROSS_COMPILE = /usr/local/arm2007q1/bin/arm-none-linux-gnueabi-（交叉编译环境目录，或如若已加环境变量，直接用交叉编译环境）
endif
修改os/linux文件夹中的config.mk文件，需要修改的地方如下（只给出需要修改的部分）：
# Support Wpa_Supplicant
- HAS_WPA_SUPPLICANT=n
+HAS_WPA_SUPPLICANT=y
# Support Native WpaSupplicant for Network Maganger
-HAS_NATIVE_WPA_SUPPLICANT_SUPPORT=n
+HAS_NATIVE_WPA_SUPPLICANT_SUPPORT=y
ifeq ($(PLATFORM),IXP)
- WFLAGS += -DRT_BIG_ENDIAN
+#WFLAGS += -DRT_BIG_ENDIAN
endif
ifeq ($(PLATFORM),IXP)
EXTRA_CFLAGS := -v $(WFLAGS) -I$(RT28xx_DIR)/include
endif
ifeq ($(PLATFORM),IXP)
- CFLAGS := -v -D__KERNEL__ -DMODULE -I$(LINUX_SRC)/include -I$(RT28xx_DIR)/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -Uarm -fno-common -pipe -mapcs-32 -D__LINUX_ARM_ARCH__=5 -mcpu=xscale -mtune=xscale -malignment-traps -msoft-float $(WFLAGS)
- EXTRA_CFLAGS := -v $(WFLAGS) -I$(RT28xx_DIR)/include
- export CFLAGS
-
+
endif
修改完成以后，通过以下命令编译：
make ARCH=arm KBUILD_NOPEDANTIC=1
如果不加KBUILD_NOPEDANTIC=1将出现CFLAGS was changed in …. Fix it to use EXTRA_CFLAGS的错误，编译不能通过。编译完成后，会在os/linux文件夹中生成rt3070sta.ko的驱动模块。此模块通过下载工具可以下载到/mnt目录。
在驱动目录下新建一个文件夹Wireless/RT2870STA，将RT2870STA.dat复制进Wireless/RT2870STAm目录下，同时将此文件夹拷贝进开发板。从超级终端进入开发板目录/mnt使用以下命令将Wireless文件夹拷贝到/etc目录下，将rt3070sta.ko拷贝进/home/root用户目录下：
#cp /mnt/Wireless /usr –r
#cp /mnt/rt3070sta.ko /home/root
打开root目录，加载驱动模块：
#cd /home/root
#insmod rt3070sta.ko
如果加载出现一下错误：
#insmod rt3070sta.ko
insmod: error inserting 'rt3070sta.ko': -1 Unknown symbol in module
#dmesg | grep rt3070
[ 2443.154486] rt2070ap: Unknown symbol usb_alloc_urb
[ 2443.154628] rt2070ap: Unknown symbol usb_free_urb
[ 2443.155032] rt2070ap: Unknown symbol usb_register_driver
[ 2443.155324] rt2070ap: Unknown symbol usb_put_dev
[ 2443.155439] rt2070ap: Unknown symbol usb_get_dev
[ 2443.155652] rt2070ap: Unknown symbol usb_submit_urb
[ 2443.156164] rt2070ap: Unknown symbol usb_control_msg
[ 2443.156553] rt2070ap: Unknown symbol usb_deregister
[ 2443.157013] rt2070ap: Unknown symbol usb_kill_urb
[ 2443.157116] rt2070ap: Unknown symbol usb_buffer_free
[ 2443.157443] rt2070ap: Unknown symbol find_vpid
[ 2443.157675] rt2070ap: Unknown symbol usb_buffer_alloc
则需要在文件os/linux/usb_main_dev.c文件的开头加上如下一行代码：
MODULE_LICENSE(“GPL”);
然后重新编译、重新加载，即可得到正确的结果。
用ifconfig -a命令查看网络，如果加载成功，不会有任何提示，同时可以查看到ra0设备的存在。
加载上模块过后，可以用相关命令设置无线网卡。命令包括iwpriv、iwconfig、iwlist、ifconfig等。比如设置无线网卡地址为192.168.1.5：
ifconfig ra0 192.168.1.5
设置无线网络模式为ad-hoc模式：
iwpriv ra0 set NetworkType=Adhoc
设置SSID名为isn313：
iwconf ra0 essid isn313
查看无线网络：
iwlist ra0 scanning
SoftAP驱动移植
解压驱动2010_0203_RT3070_SoftAP_v2.4.0.1_DPA.bz2，然后进入目录：
tar jxvf 2010_0203_RT3070_SoftAP_v2.4.0.1_DPA.bz2
cd 2010_0203_RT3070_SoftAP_v2.4.0.1_DPA
修改Makefile如下（“-”表示删除的行，“+”表示添加的行）：
+#Makefile for RT3070 on MBC-SAM9G45
+#2010_11_13 by liyi
RT28xx_MODE = AP
TARGET = LINUX
CHIPSET = 3070
-PLATFORM = PC
+PLATFORM = IXP
………
ifeq ($(PLATFORM),IXP)
-Linux_SRC = /project………..
-CROSS_COMPILE = arm-linux-
+LINUX_SRC = /home/Embest_SAM9G45/linux-2.6.30
+CROSS_COMPILE = /usr/local/arm2007q1/bin/arm-none-linux-gnueabi-
endif
注意，在2010_0203_RT3070_SoftAP_v2.4.0.1_DPA.bz2驱动中，有三个文件夹，分别为MODULE、NETIF、UTIL，在这三个文件中均有Makefile，所有的Makefile都需要如上修改，同样，三个文件夹中的config.mk文件也都需要修改。
修改config.mk配置文件。
ifeq ($(PLATFORM),IXP)
- WFLAGS += -DRT_BIG_ENDIAN
+#WFLAGS += -DRT_BIG_ENDIAN
endif
ifeq ($(PLATFORM),IXP)
#WFLAGS += -DRT_BIG_ENDIAN
endif
ifeq ($(PLATFORM),IXP)
CFLAGS := -v -D__KERNEL__ -DMODULE -I$(LINUX_SRC)/include -I$(RT28xx_DIR)/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -Uarm -fno-common -pipe -mapcs-32 -D__LINUX_ARM_ARCH__=5 -mcpu=xscale -mtune=xscale -malignment-traps -msoft-float $(WFLAGS)
EXTRA_CFLAGS := -v $(WFLAGS) -I$(RT28xx_DIR)/include
export CFLAGS
endif
对不起，在修改驱动config.mk文件的时候，红色修改部分没有给全，应该是把CFLAGS和EXTRA_FLAGS中的-mbig-endian选项去掉，因为在ARM中采用的小端模式！特此更正！
所有的config.mk都修改好以后，通过以下命令进行编译：
make ARCH=arm KBUILD_NOPEDANTIC=1
如果编译不能通过，请检查是否所有的文件夹中的Makefile和config.mk都已经修改。编译通过后，将在三个文件夹中分别生成三个可加载模块：rt3070ap.ko，rtutil3070ap.ko，rtnet3070ap.ko。通过USB接口将这三个模块和rt2870ap.dat文件下载到开发板目录下。并将文件移动到相应位置：
#mkdir /etc/Wireless/
#mkdir /etc/Wireless/RT2870AP/
#cp /mnt/rt2870ap.dat /etc/Wireless/RT2870AP/RT2870AP.dat
#cp /mnt/rt3070ap.ko /home/root
#cp /mnt/rtutil3070ap.ko /home/root
#cp /mnt/rtnet3070ap.ko /home/root
第三行中，在RT2870AP文件夹中的.dat文件名必须是大写的，否则模块将无法读取。
移动好后，进入root目录并加载模块：
#cd /home/root
#insmod rtutil3070ap.ko
#insmod rt3070ap.ko
#insmod rtnet3070ap.ko
#ifconfig ra0 up
此处，加载模块一定要按此顺序加载，否则将出现以下错误（用dmesg函数可查看相关错误信息）：
#insmod rt3070sta.ko
insmod: error inserting 'rt3070sta.ko': -1 Unknown symbol in module
#dmesg | grep rt3070
[ 1011.612979] rt3070ap: Unknown symbol rausb_buffer_free
[ 1011.613153] rt3070ap: Unknown symbol RtmpOSTaskNotifyToExit
[ 1011.613410] rt3070ap: Unknown symbol rausb_buffer_alloc
[ 1011.613536] rt3070ap: Unknown symbol RTMPFreeNdisPacket
[ 1011.613692] rt3070ap: Unknown symbol AdapterBlockAllocateMemory
[ 1011.613816] rt3070ap: Unknown symbol RTMP_IndicateMediaState
[ 1011.614106] rt3070ap: Unknown symbol RTMP_SetPeriodicTimer
[ 1011.614241] rt3070ap: Unknown symbol os_alloc_mem
[ 1011.614373] rt3070ap: Unknown symbol ClonePacket
[ 1011.614505] rt3070ap: Unknown symbol RTDebugLevel
[ 1011.614646] rt3070ap: Unknown symbol announce_802_3_packet
[ 1011.614780] rt3070ap: Unknown symbol Sniff2BytesFromNdisBuffer
[ 1011.614916] rt3070ap: Unknown symbol RTMP_OS_Add_Timer
[ 1011.615043] rt3070ap: Unknown symbol rausb_submit_urb
[ 1011.615167] rt3070ap: Unknown symbol RTMP_AllocateFragPacketBuffer
[ 1011.615292] rt3070ap: Unknown symbol rausb_alloc_urb
[ 1011.615491] rt3070ap: Unknown symbol RtmpOSNetPktAlloc
[ 1011.615616] rt3070ap: Unknown symbol VLAN_8023_Header_Copy
[ 1011.615739] rt3070ap: Unknown symbol RTMP_OS_Mod_Timer
[ 1011.615863] rt3070ap: Unknown symbol os_free_mem
[ 1011.616005] rt3070ap: Unknown symbol rausb_control_msg
[ 1011.616079] rt3070ap: Unknown symbol duplicate_pkt_with_TKIP_MIC
[ 1011.616079] rt3070ap: Unknown symbol duplicate_pkt_with_VLAN
[ 1011.616079] rt3070ap: Unknown symbol DuplicatePacket
[ 1011.616079] rt3070ap: Unknown symbol RtmpOSTaskCustomize
[ 1011.616079] rt3070ap: Unknown symbol RTMP_OS_Del_Timer
[ 1011.616079] rt3070ap: Unknown symbol rausb_free_urb
[ 1011.616079] rt3070ap: Unknown symbol get_netdev_from_bssid
[ 1011.616079] rt3070ap: Unknown symbol hex_dump
[ 1011.616079] rt3070ap: Unknown symbol RtmpOSFileOpen
[ 1011.616079] rt3070ap: Unknown symbol RTMPFreeAdapter
[ 1011.616079] rt3070ap: Unknown symbol RtmpOSFSInfoChange
[ 1011.616079] rt3070ap: Unknown symbol wlan_802_11_to_802_3_packet
[ 1011.618201] rt3070ap: Unknown symbol RTMP_GetCurrentSystemTime
[ 1011.618341] rt3070ap: Unknown symbol RTMPAllocateNdisPacket
[ 1011.618498] rt3070ap: Unknown symbol RTMPSendWirelessEvent
[ 1011.618621] rt3070ap: Unknown symbol RTMPL2FrameTxAction
[ 1011.618747] rt3070ap: Unknown symbol rausb_kill_urb
[ 1011.618899] rt3070ap: Unknown symbol RTMP_OS_Init_Timer
[ 1011.619022] rt3070ap: Unknown symbol RTMPusecDelay
[ 1011.619147] rt3070ap: Unknown symbol update_os_packet_info
[ 1011.619312] rt3070ap: Unknown symbol RtmpOSFileRead
[ 1011.619517] rt3070ap: Unknown symbol RtmpOSFileClose
[ 1011.619641] rt3070ap: Unknown symbol RTMP_QueryPacketInfo
[ 1011.619764] rt3070ap: Unknown symbol RtmpOSFileWrite
在加载过程中若出现以下错误：
[421.461365] rt3070ap: module license 'RALINK' taints kernel.
[421.461723] Disabling lock debugging due to kernel taint
请修改UTIL/os/linux/usb_main_dev.c文件，在文件的开头加上如下一行程序：
MODULE_LICENSE(“GPL”)
重新编译：
#make clean
#make KBUILD_NOPEDANTIC=1
然后再重新下载，按顺序加载模块即可成功。
模块加载成功后，用一下命令可查看相关信息：
#ifconfig –a
eth0 Link encap:Ethernet HWaddr 3A:1F:34:08:54:54
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:25 Base address:0xc000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:576 (576.0 B) TX bytes:576 (576.0 B)
ra0 Link encap:Ethernet HWaddr 00:00:00:00:00:00
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
#iwconfig ra0
ra0 RTWIFI SoftAP ESSID:"RT2860AP" Nickname:""
Mode:Managed Channel=11 Access Point: 00:0C:43:41:6F:A6
Bit Rate=150 Mb/s
用ifconfig命令设定ra0的IP地址：
#ifconfig ra0 192.168.1.1
ra0 Link encap:Ethernet HWaddr 00:0C:43:41:6F:A6
inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:121922 (119.0 KiB) TX bytes:9072 (8.8 KiB)
至此，一个默认的名为RT2860AP的网络就建立起来了。用iwconfig命令可修改网络的相关参数。如：
#iwconfig ra0 set SSID=”RT_AP”
#iwconfig ra0
ra0 RTWIFI SoftAP ESSID:"RT_AP" Nickname:""
Mode:Managed Channel=11 Access Point: 00:0C:43:41:6F:A6
Bit Rate=150 Mb/s
结束后，可以通过以下命令卸载模块：
#ifconfig ra0 down
#rmmod rtnet3070ap.ko
#rmmod rt3070ap.ko
#rmmod rtutil3070ap.ko
