手动加载驱动

####16th,Jul

驱动加载

modprobe libertas

modprobe libertas_sdio

加载第二行时出错拉

# modprobe libertas_sdio

libertas_sdio: Libertas SDIO driver

libertas_sdio: Copyright Pierre Ossman

model=0xb

sd8686_helper.bin sd8686.bin

init: untracked pid 958 exited

过了一会出现：

libertas: can't load helper firmware

libertas: failed to load helper firmware

libertas_sdio: probe of mmc2:0001:1 failed with error -2

但是用lsmod又能看到

# lsmod libertas_sdio 8776 0 - Live 0xbf022000

libertas 97416 1 libertas_sdio, Live 0xbf009000

usbserial 30256 0 - Live 0xbf000000

###使用insmod试一下

insmod

/lib/modules/2.6.24.7/kernel/drivers/net/wireless/libertas/libertas.ko

insmod

/lib/modules/2.6.24.7/kernel/drivers/net/wireless/libertas/libertas_sdio.ko

还是老样子

###发现系统中没有提到的文件fireware文件

从华恒的romfs/lib把fireware拷贝到 /nfs/rootfs/lib下

$$还是不行

###把fireware拷贝到system/etc/下面，终于可以加载了

如下：

# modprobe libertas_sdio

libertas_sdio: Libertas SDIO driver

libertas_sdio: Copyright Pierre Ossman

model=0xb

sd8686_helper.bin sd8686.bin

init: untracked pid 714 exited

init: untracked pid 717 exited

libertas: eth1: Marvell WLAN 802.11 adapter

$$$建议

Title：Android INIT not loading firmware

android员工答：You need to run the insmod in a separate process

launched by init.

#########

理解原理

Android uses a modified wpa_supplicant (external/wpa_supplicant)

daemon for wifi support which is controlled through a socket by

hardware/libhardware_legacy/wifi/wifi.c (WiFiHW) that gets

controlled from Android UI through android.net.wifi package from

frameworks/base/wifi/java/android/net/wifi/ and it's corresponding

jni implementation in

frameworks/base/core/jni/android_net_wifi_Wifi.cpp Higher level

network management is done in

frameworks/base/core/java/android/net

1.在build/target/board/generic/BoardConfig.mk中增加

BOARD_WPA_SUPPLICANT_DRIVER := WEXT

2.打开调试信息--可选

默认是不打开调试的

2.1 modify external/wpa_supplicant/common.c and set wpa_debug_level

= MSG_DEBUG

2.2 modify common.h and change #define wpa_printf from if ((level)

>= MSG_INFO) to if ((level) >= MSG_DEBUG)

3.创建system/etc/wifi/wpa_supplicant.conf

有2种socket

一种是android private socket

ctrl_interface=eth1

update_config=1

ap_scan=1 ###取决于wifi驱动，如果不行，则改为0试试

另一种是unix 标准socket，这里先选用第二种

ctrl_interface=DIR=/data/system/wpa_supplicant GROUP=wifi

update_config=1

ap_scan=1 ###取决于wifi驱动，如果不行，则改为0试试

4在init.rc中增加以下语句

#@qiu

mkdir

/system/etc/wifi 0777 wifi wifi

chmod 0777

/system/etc/wifi

chmod 0777

/system/etc/wifi/wpa_supplicant.conf

chown wifi

wifi /system/etc/wifi/wpa_supplicant.conf

mkdir /data/misc/wifi 0777 wifi wifi

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

chmod 0777 /data/misc/wifi

chmod 0777 /data/misc/wifi/wpa_supplicant.conf

chown wifi wifi /data/misc/wifi

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

#

wpa_supplicant socket (unix socket mode)

mkdir

/data/system/wpa_supplicant 0777 wifi wifi

chmod 0777

/data/system/wpa_supplicant

chown wifi

wifi /data/system/wpa_supplicant

#qiu@

##如果是private socket，则是

mkdir /system/etc/wifi 0777 wifi wifi

chmod 0777 /system/etc/wifi

chmod 0777 /system/etc/wifi/wpa_supplicant.conf

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

#wpa_supplicant control socket for android wifi.c (android private

socket)

mkdir /data/misc/wifi 0777 wifi wifi

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

chmod 0777 /data/misc/wifi

chmod 0777 /data/misc/wifi/wpa_supplicant.conf

chown wifi wifi /data/misc/wifi

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

5.在init.rc中添加wpa_supplicant和dhcpcd启动服务

service wpa_supplicant /system/bin/wpa_supplicant -dd -Dwext -ieth1

-c /system/etc/wifi/wpa_supplicant.conf

group system wifi inet

disabled

oneshot

##如果是pricvate socket则需要在group上面增加一行：

socket wpa_eth1 dgram 777 wifi wifi

service dhcpcd /system/bin/dhcpcd -f /system/etc/dhcpcd/dhcpcd.conf

-d eth1

group system dhcp wifi

disabled

oneshot

5.5增加/system/etc/dhcpcd/dhcpcd.conf文件内容

interface eth1

option subnet_mask, routers, domain_name_servers

6.把wifi驱动编译进内核

首先init.rc中增加

setprop wifi.interface "eth1"

setprop wlan.driver.status "ok"

其次在修改hardware/libhardware_legacy/wifi/wifi.c

新的out/target/product/generic/system/lib/libhardware_legacy.so---v2

在函数wifi_load_driver()的体的开头增加

//@qiu LOGE("Weber@wifi driver

loaded !");

return

0;

//qiu@

在函数wifi_unload_driver()体的开头增加

//@qiu

LOGE("Weber@wifi driver

unloaded!");

return

0;

//qiu@

####17th,Jul

把驱动从M改为*,得zImage-vvv39

开始启动：

加载firmware的时候出错

libertas: can't load helper firmware

libertas: failed to load helper firmware

libertas_sdio: probe of mmc2:0001:1 failed with error -2

看来是无法加载fireware

###尝试修改wifi.c让它自动加载模块

修改

#ifndef WIFI_DRIVER_MODULE_PATH1

#define

WIFI_DRIVER_MODULE_PATH1 "/system/lib/modules/libertas.ko"

#endif

#ifndef WIFI_DRIVER_MODULE_PATH2

#define

WIFI_DRIVER_MODULE_PATH2 "/system/lib/modules/libertas_sdio.ko"

#endif

#ifndef WIFI_DRIVER_MODULE_NAME1

#define

WIFI_DRIVER_MODULE_NAME1 "libertas"

#endif

#ifndef WIFI_DRIVER_MODULE_NAME2

#define

WIFI_DRIVER_MODULE_NAME2 "libertas_sdio"

#endif

并在此文件的后面代码中做一定修改，wifi_load_driver()函数中也做相应修改

编译得到libhardware_legacy.so---v3

-启动后在设置中点击wifi

串口显示如下，看来是能加载了

# libertas_sdio: Libertas SDIO driver

libertas_sdio: Copyright Pierre Ossman

model=0xb

sd8686_helper.bin sd8686.bin

init: untracked pid 954 exited

init: untracked pid 957 exited

libertas: eth1: Marvell WLAN 802.11 adapter

但是wifi图标下面显示wifi不可用

查看logcat的main：

7899 E/WifiHW ( 708): Cannot access

"/data/misc/wifi/wpa_supplicant.conf": Permission denied

7900 E/WifiHW ( 708): Wi-Fi will not be enabled

7901 W/WifiHW ( 708): Weber@wifi driver

unloaded!

7902 E/WifiService( 708):

Failed to start supplicant daemon.

7903 D/SettingsWifiEnabler( 791): Received wifi state changed from Enabling to Unknown

于是增加以下语句到init.rc

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

并且cp system/etc/wifi/wpa_supplicant.conf ./data/misc/wifi/

启动，终于能打开wifi，但还是无法打开网页

查看logcat

4564 E/wpa_supplicant( 917): Failed to read or

parse configuration '/system/etc/wifi/wpa_supplicant.conf'.

4565 E/WifiHW ( 708): Unable to

open connection to supplicant on "/data/system/wpa_supplicant/sta":

No such file or directory

4566 D/WifiService( 708): ACTION_BATTERY_CHANGED

pluggedType: 1

4899 E/WifiHW ( 708):

Supplicant not running, cannot connect

5574 E/WifiHW ( 708):

Supplicant not running, cannot connect

5575 V/WifiStateTracker( 708): Supplicant died

unexpectedly

5576 D/dalvikvm( 934): DexOpt: load 3102ms,

verify 1519ms, opt 24ms

5577 D/installd( 665): DexInv: --- END

'/system/app/Browser.apk' (success) ---

5578 D/NetworkStateTracker( 708): setDetailed

state, old =IDLE and new state=DISCONNECTED

5579 D/ConnectivityService( 708):

ConnectivityChange for WIFI: DISCONNECTED/DISCONNECTED

##在init.rc中把wpa_supplicant.conf权限修改为777，

还是有错误：

5573 E/WifiHW ( 708): Unable to

open connection to supplicant on "/data/system/wpa_supplicant/sta":

No such file or director

##在init.rc中增加以下几条语句

setprop

wifi.interface "eth1"

setprop

wlan.driver.status "ok"

setprop

wlan.interface "eth1"

结果还是不行logcat显示

E/WifiHW ( 708):Unable to open connection to

supplicant on "/data/system/wpa_supplicant/eth1": No such file or

directory

##在init.rc中dhcp服务启动是为eth1的增加wifi组权限

又出现新错误

如果开始就enable wifi就会出现以下错误：

E/WifiHW ( 709): Unable to open

connection to supplicant on "/data/system/wpa_supplicant/eth1":

Connection refused

因为这是开机默认启动wifi，如果不起动，错误则是和上一条相同

###18th,Jul

##尝试在wpa_supplicant.conf设置GROUP=system,还是不行，只好改回去

ls /data/system/wpa_supplicant/eth1 -l

srwxrwx--- 1

1010 1010 0 Jul 18 08:22 /data/system/wpa_supplicant/eth1

# ls /data/system/wpa_supplicant/eth1 -l

srwxrwxrwx 1

1010 1010 0 Jul 18 08:22 /data/system/wpa_supplicant/eth1

###18th,Jul手动调试

# wpa_supplicant -dd -Dwext -ieth1 -c

/system/etc/wifi/wpa_supplicant.conf&

# ioctl[SIOCSIWPMKSA]: Invalid argument《《《《输出的错误

# ls /data/system/wpa_supplicant/eth1 -l

srwxrwxrwx 1

1010 1010 0 Jul 18 13:14 /data/system/wpa_supplicant/eth1

#wpa_cli -i eth1 -p /data/system/wpa_supplicant

不知道该如何设置ap

bash# wpa_cli -ieth1 scan //搜索无线网

bash# wpa_cli -ieth1 scan_results //显示搜索结果

bash# wpa_cli -ieth1 add_network

bash# iwconfig eth1 essid "you_wifi_net"

bash# wpa_cli -ieth1 password 0 "password"

bash# wpa_cli -ieth1 enable_network

###19th，Jul

修改vi

frameworks/base/wifi/java/android/net/wifi/WifiStateTracker.java

把tiwlan0改eth1

暂时未编译

###开始没有选择第二步的debug选项，选上，在external/wpa_supplicant目录下有mm编译

得到

system/bin/wpa_cli---vvv1

system/lib/libwpa_client.so---vvv1

system/bin/wpa_supplicant---vvv1

###试一下android private socket

修改vi system/etc/wifi/wpa_supplicant.conf

vi data/misc/wifi/wpa_supplicant.conf

修改init.rc

在chmod那里把unix socket的那段注释

在启动wpa_supplicant的时候增加

socket wpa_eth1 dgram 660 wifi wifi

结果还是不行

###只好在external/wpa_supplicant/wpa_ctrl.c中添加

LOGW，注意得先加入头文件和LOG_TAG

17 #define LOG_TAG "WifiQiu"

18 #include "cutils/log.h"

mm编译得到

system/bin/wpa_cli---vvv2

system/lib/libwpa_client.so---vvv2

但是竟然没有WifiQiu输出，不知道是不是没有用make而是mm的缘故

###20th,Jul

1.BoardConfig.mk增加了HAVE_CUSTOM_WIFI_DRIVER_2 := true

2.修改wifi/wifi.c中使得检查和卸载驱动的两个函数，用make编译得到

libhardware_legacy.so---v4

system/bin/wpa_cli---vvv2.1

system/bin/wpa_supplicant-v2

system/lib/libwpa_client.so---vvv2.1

###上面的版本还没有来的及测试，有发现问题

1.突然发现external/wpa_supplicant/wpa_ctrl.c中LOG不够全面，

一共有三种情况，漏了一个函数没有加，于是增加LOGW并使之可以区分

2.根据手动strace wpa_cli的提示

access("/data/misc/wifi/wpa_supplicant", F_OK) = -1 ENOENT (No such

file or directory)

用grep 搜索到所在文件为external/wpa_supplicant/wpa_cli.c

把它修改为：/data/misc/wifi

用mm分别在external/wpa_supplicant和hardware/libhardware_legacy中编译

得到

system/bin/wpa_cli---vvvvv3

system/lib/libwpa_client.so---vvv3

libhardware_legacy.so---v5

启动之后发现是在对socket进行连接的时候出错了

connect(ctrl->s, (struct sockaddr *)

&ctrl->dest,sizeof(ctrl->dest)) < 0)

而且不能关闭wifi

只好重新修改wifi.c直接在unload函数中返回0，使得wifi能被关闭

libhardware_legacy.so---v5.1

###21th,Jul使用private的时候再次手动调试

# wpa_supplicant -dd -Dwext -ieth1 -c

/system/etc/wifi/wpa_supplicant.conf&

# ioctl[SIOCSIWPMKSA]: Invalid argument

mkdir[ctrl_interface]: Permission denied

[1] +

Done(255) wpa_supplicant -dd -Dwext -ieth1 -c

/system/etc/wifi/wpa_supplicant.conf

查找mkdir发现是在ctrl_iface_unix.c中

错误是出现在#ifdef ANDROID之外阿，诡异

###用donut中external/wpa_supplicant下的driver_wext.c替换地掉eclair中的

mm重新编译，得到：

wpa_supplicant---vvv3

$$$还是不行

###22th,Jul

把donut的wpa_supplicant文件夹拷贝到eclair下

用mm编译得到

system/bin/wpa_cli---vvvvv4

system/bin/wpa_supplicant---vvv4

system/lib/libwpa_client.so---vvv4

wpa_supplicant---vvv3

终于可以搜索到网络了，泪奔

但是，不能获取到ip地址呵呵

logcat提示：

I/WifiStateTracker( 713): DhcpHandler: DHCP

request failed: Timed out waiting for DHCP to finish

###手动启动dhcp提示

eth1: open `/data/misc/dhcp/dhcpcd-eth1.pid': No such file or

directory

在init.rc中增加

mkdir /data/misc/dhcp 0777 wifi wifi

chmod 0777 /data/misc/dhcp

chown wifi wifi /data/misc/dhcp

还是不能获得地址

eth1: flock `/data/misc/dhcp/dhcpcd-eth1.pid': Try again

后来把上面的wifi 改为dhcp，还是不能获得IP地址

$$

把dhcpcd杀了，手动启动

# dhcpcd -f /system/etc/dhcpcd/dhcpcd.conf -d eth1

eth1: dhcpcd 4.0.1 starting

eth1: hardware address = 00:1a:6b:a2:38:65

eth1: executing `/system/etc/dhcpcd/dhcpcd-run-hooks', reason

PREINIT

eth1: /system/etc/dhcpcd/dhcpcd-run-hooks: Permission denied

eth1: waiting for carrier

eth1: host does not support a monotonic clock - timing can

skew

eth1: timed out

eth1: executing `/system/etc/dhcpcd/dhcpcd-run-hooks', reason

FAIL

eth1: /system/etc/dhcpcd/dhcpcd-run-hooks: Permission denied

$$把权限都改为777，再次执行

# dhcpcd -f /system/etc/dhcpcd/dhcpcd.conf -d eth1

eth1: dhcpcd 4.0.1 starting

eth1: hardware address = 00:1a:6b:a2:38:65

eth1: executing `/system/etc/dhcpcd/dhcpcd-run-hooks', reason

PREINIT

eth1: waiting for carrier

eth1: host does not support a monotonic clock - timing can

skew

eth1: timed out

eth1: executing `/system/etc/dhcpcd/dhcpcd-run-hooks', reason

FAIL

$$还没有关闭android机呢，重新打开wifi，嘿嘿，能分配到地址了

但是...但是，还是不能上网，估计是由于地址的原因吧

把eth0禁用之后就可以上网了，呵呵

wifi移植告一段落