How to enable bcm4329 wifi?

[Ching]

There is bcm4329 driver/firmware exist under ..'hardware/broadcom'.
It seems support different hw port. Is there a programing gudie document about it?
Does anybody has experience to build and enable wifi on imx51 android solution throung SDIO?

[mbp]

Wondering (outloud) if you got this working on your system....Any tips & pitfalls would be MUCH appreciated! 

Thanks!

[wigros_sun]

(1)wifi based on BCM4329 module should be connected to sdio interface on i.mx51.

(2)Compile wifi driver from Broadcom and get a  .ko file(such as dhd.ko).

(3)Open nvram.txt and modify crystal (for example, you use 38.4MHz on hardware,then xtalfreq=38400)

(4)copy dhd.ko to /opt/nfsroot/system/lib/modules

(5)copy sdio-bcm4329-dhd.bin(firmware) and nvram.txt to /opt/nfsroot/system/lib/modules

(6)enter ~/android22/kernel_imx/drivers/mmc/core and find sdio.c file

search whether there is the following function, if not , please search it on website(google)

int sdio_reset_comm(struct mmc_card *card)
{
}

EXPORT_SYMBOL(sido_reset_comm);

(7)configure linux kernel

a. choose Device driver-->Network driver support-->Wireless LAN

    [*]Wireless Lan

    [*]IEEE802.11 For Host AP

       [*]Support downloading firmware images with host AP driver.

       [*] Support for non-volatile firmware download

b.choose Networking support-->Wireless

       [*] old wireless static regulatory definitions

       [*] wireless extensions sysfs files

(8) load driver

#/system/bin/insmod /system/lib/modules/dhd.ko "firmware_path=/system/etc/wifi/sdio-bcm4329-dhd.bin
nvram_path=/system/etc/wifi/nvram.txt"

The following will display :

/#DHD: dongle ram size is set to 294912(orig 294912)
Firmware version = wl0: Aug 11 2010 13:21:15 version 4.218.243.1
eth1: Broadcom Dongle Host Driver mac=00:26:37:a4:f7:e7
Enter wl_control_wl_start
Exited wl_control_wl_start

<-------How to debug wifi on linux command line -------------------->

customer can use "wireless-tools" to debug wifi network. this tool can be downloaded from internet. after compliling, some tools can be got :

frename iwconfig iwevent iwgetid iwlist iwpriv iwspy

**Use "iwconfig" to set AP ( router)

#iwconfig eth1 mode Managed
#iwconfig eth1 key 1234567890
#iwconfig eth1 key open
#iwconfig eth1 essid TP-LINK_432F1A

**Get DHCP Address

#/system/bin/dhcpcd eth1

**Search AP

#iwlist eth1 scan

Cell 01 - Address: 00:23:CD:43:2F:1A
ESSID:"TP-LINK_432F1A"
Cell 02 - Address: 00:23:CD:5D:56:66
ESSID:"TP-LINK_789"

******Customer can also use "wpa_supplicant" to test BCM4329"

A. Configure wpa_supplicant.conf file

Open /opt/nfsroot/system/etc/wifi/wpa_supplicant.conf and add the following lines:

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

ap_scan=1

update_config=1

B. Run wpa_supplicant service by back

#/system/bin/wpa_supplicant -B -Dwext -ieth1 -c/data/misc/wifi/wpa_supplicant.conf

C. Run wpa_cli to connect AP

# wpa_cli –i eth1
>add_network
0
> set_network 0 ssid "TP-LINK_432F1A"
OK
> set_network 0 wep_key2 "1234567890"
OK
> enable_network 0
OK

>q

****************************For android2.2 based on i.mx51******************************

(1) Adjust init.rc file

At position "prepare for wifi", to add:

（1）在prepare for wifi 处添加目录并修改权限
setprop wifi.interface eth1
mkdir /data/misc/wifi/sockets 0777 wifi wifi
mkdir /data/misc/dhcp 0777 dhcp dhcp
mkdir /data/misc/wifi 0777 wifi wifi
mkdir /system/etc/wifi 0777 wifi wifi
mkdir /data/system/wpa_supplicant 0771 wifi wifi
mkdir /data/misc/wifi/wpa_supplicant 0771 wifi wifi
chmod 0777 /data/misc
chmod 0777 /data/misc/wifi
chmod 0777 /data/misc/wifi/wpa_supplicant.conf
chmod 0771 /system/etc/wifi
chmod 0777 /system/etc/wifi/wpa_supplicant.conf
chmod 0777 /data/system/wpa_supplicant
chmod 0777 /data/misc/wifi/wpa_supplicant
chmod 0777 /system/etc/dhcpcd
chmod 0777 /system/etc/dhcpcd/dhcpcd-hooks
chown wifi wifi data/system/wpa_supplicant
chown wifi wifi /system/etc/wifi/wpa_supplicant.conf
chown dhcp dhcp /data/misc/dhcp
chown wifi wifi /data/misc/wifi/wpa_supplicant
chown dhcp dhcp /system/etc/dhcpcd
chown dhcp dhcp /system/etc/dhcpcd/dhcpcd-hooks

(2)Modify wpa_supplicant and DHCP service

service wpa_supplicant /system/bin/logwrapper /system/bin/wpa_supplicant -d -B -Dwext -ieth1 -c/data/misc/wifi/wpa_supplicant.conf

user root
group wifi inet
socket wpa_eth1 dgram 777 wifi wifi
disable
oneshot

service dhcpcd /system/bin/logwrapper /system/bin/dhcpcd -d -B eth1
user root
group system dhcp wifi
disabled
oneshot

(3)modify HAL for wifi .

Open android/hardware/libhardware_legacy/wifi/wifi.c and add:

#ifndef WIFI_DRIVER_MODULE_PATH
#define WIFI_DRIVER_MODULE_PATH "/system/lib/modules/dhd.ko"
#endif
#ifndef WIFI_DRIVER_MODULE_NAME

#define WIFI_DRIVER_MODULE_NAME "dhd"
#endif
#ifndef WIFI_DRIVER_MODULE_ARG
#define WIFI_DRIVER_MODULE_ARG "firmware_path=/system/etc/wifi/sdio-bcm4329-dhd.bin
nvram_path=/system/etc/wifi/nvram.txt"
#endif
#ifndef WIFI_FIRMWARE_LOADER
#define WIFI_FIRMWARE_LOADER ""
#endif
#define WIFI_TEST_INTERFACE "eth1"
#define WIFI_DRIVER_LOADER_DELAY 5000000

static const char IFACE_DIR[] = "/mywifi";/*这里填一个不存在的文件目录*/
static const char DRIVER_MODULE_NAME[] = WIFI_DRIVER_MODULE_NAME;
static const char DRIVER_MODULE_TAG[] = WIFI_DRIVER_MODULE_NAME " ";
static const char DRIVER_MODULE_PATH[] = WIFI_DRIVER_MODULE_PATH;
static const char DRIVER_MODULE_ARG[] = WIFI_DRIVER_MODULE_ARG;
static const char FIRMWARE_LOADER[] = WIFI_FIRMWARE_LOADER;
static const char DRIVER_PROP_NAME[] = "wlan.driver.status";
static const char SUPPLICANT_NAME[] = "wpa_supplicant";
static const char SUPP_PROP_NAME[] = "init.svc.wpa_supplicant";
static const char SUPP_CONFIG_TEMPLATE[]= "/system/etc/wifi/wpa_supplicant.conf";
static const char SUPP_CONFIG_FILE[] = "/data/misc/wifi/wpa_supplicant.conf";
static const char MODULE_FILE[] = "/proc/modules";

(4) modify android/device/fsl/imx51_bbg/BoardConfig.mk file

BOARD_WPA_SUPPLICANT_DRIVER := WEXT
HAVE_CUSTOM_WIFI_DRIVER_2 :=false
WIFI_DRIVER_MODULE_PATH := /system/lib/modules/dhd.ko
WIFI_DRIVER_MODULE_NAME :=”dhd”
WIFI_DRIVER_MODULE_ARG :=”firmware_path=/system/etc/wifi/ sdio-bcm4329-dhd.bin nvram_path=/system/etc/wifi/nvram.txt”

(5)modify frameworks/base/wifi/java/android/net/wifi/WifiStateTracker.java file

mInterfaceName = SystemProperties.get("wifi.interface", "tiwlan0");

>>mInterfaceName = SystemProperties.get("wifi.interface", "eth1");

(6)modify android/build/target/board/generic/system.prop

add : wifi.interfae=eth1

(7)modify android/external/wpa_supplicant/wpa_supplicant.conf :

ctrl_interface=eth1

update_config=1

ap_scan=1

(8) configure AP and delete password .

(9) compile android source code.

(10) That is ok.

Maybe it seems very complex , acturally it is not difficult.