Android with BusyBox

Android 的shell真是鳥到不行.功能超陽春.

現在教各位安裝busybox到Android的環境中來解決這個問題

1.Download BusyBox -> 這個不用偶教吧 :)
2.
  cd busybox-1.15.1
  make menuconfig

  設定BusyBox為Static link
  BusyBox Settings -> Build Options -> Build BusyBox as a static binary (no shared libs) 

  設定安裝路徑到Android root file system
  BusyBox Settings -> Installation Options -> BusyBox Installation Prefix

  ${HOME}/S3C6410/android_cupcake_smdk6410/opensource_cupcake_0424_opencore203/out/target/product/smdk6410/system/busybox

  Config functions you need...

  make
  make install
3.Go to Android root file system
 
 cd ${HOME}/S3C6410/android_cupcake_smdk6410/opensource_cupcake_0424_opencore203/out/target/product/smdk6410/root

 修改 init.rc 使busybox正常運作

 #    export PATH /sbin:/system/sbin:/system/bin:/system/xbin
export PATH /bin:/system/busybox/sbin:/system/busybox/usr/bin:/system/busybox/usr/sbin:/sbin:/system/sbin:/system/bin:/system/xbin

 使用busybox提供的shell

## Daemon processes to be run by init.
##
#service console /system/bin/sh
service console /system/busybox/bin/sh
    console

4.編輯 /etc/inittab

cd ${HOME}/S3C6410/android_cupcake_smdk6410/opensource_cupcake_0424_opencore203/out/target/product/smdk6410/

產生 system/etc/inittab 內容如下

::sysinit:/etc/init.d/rcS
ttySAC0::askfirst:/system/busybox/bin/sh

5.編輯 /etc/init.d/rcS

mkdir system/etc/init.d

產生 system/etc/init.d/rcS 內容如下

#!/bin/sh
echo "Processing etc/init.d/rc.S"

echo "Starting mdevd"

echo /system/busybox/sbin/mdev > /proc/sys/kernel/hotplug
/system/busybox/sbin/mdev -s

/system/busybox/sbin/ifconfig eth0 192.168.168.209 netmask 255.255.255.0

/system/busybox/usr/sbin/inetd
/system/busybox/usr/sbin/telnetd -l /bin/login

echo "Start Android ..."
 
/init

設定權限為可執行

chmod 755 system/etc/init.d/rcS

5.1 Create device node

sudo mknod root/dev/tty1 c 4 1
sudo mknod root/dev/tty2 c 4 2
sudo mknod root/dev/tty3 c 4 3
sudo mknod root/dev/tty4 c 4 4
sudo mknod root/dev/tty5 c 4 5

sudo mknod root/dev/null c 1 3

sudo mknod root/dev/ttySAC0 c 204 64
cd root/dev
ln -s ttySAC0 console
cd ../..

5.2 Symbolic link

為了讓busybox啟動時找的到 /etc 目錄

cd root
ln -s system/etc etc
cd ..

為了讓busybox啟動時找的到 /bin 目錄

cd root
ln -s system/busybox/bin bin
cd ..

建立linuxrc

cd root
ln -s system/busybox/linuxrc linuxrc
cd ..

6.busybox ftpd

編輯 system/etc/inetd.conf

21 stream tcp nowait root ftpd ftpd -w -v /

產生 system/etc/passwd
         system/etc/group
         system/etc/services
         system/etc/resolv.conf

7.複製system目錄到root file system

8.重新打包Android root file system放到target就可以了

9.kernel param fix

修改 init=/init 為 init=/linuxrc
使得busybox會先被系統執行

10.附記

Android support busybox有點小複雜因為Android本身就有shell.
目前這樣的作法不會覆蓋到Android binary code.是比較好的作法.
system boot會先run busybox,大致流程是

/linuxrc -> /etc/inittab -> /etc/init.d/rcS -> Run ash -> Run /init to start Android -> /init.rc

透過init.rc設定PATH環境變數讓busybox command為優先.

OMAP3530 USB Wifi - RALINK RT73

1.Download 2009_0713_RT73_Linux_STA_Drv1.1.0.3 from ralink web site
2.Build driver.

cp Makefile.6 Makefile
Patch Makefile (Fix LINUX_SRC as yours)

--- Makefile.6    2009-07-13 02:32:22.000000000 +0800
+++ Makefile    2010-04-14 19:41:21.000000000 +0800
@@ -2,8 +2,9 @@
 #    Module Name: Makefile
 #    Abstract: Makefile for rt73 linux driver on kernel series 2.6
 ######################################################################
-PLATFORM=PC
+#PLATFORM=PC
 #PLATFORM=CMPC
+PLATFORM=BeagleBoard
 
 #Enable for wpa_supplicant's spcific driver "driver_ralink.c", default enabled.
 HAS_RALINK_WPA_SUPPLICANT_SUPPORT=y
@@ -40,6 +41,9 @@
 ifeq ($(PLATFORM),CMPC)
 LINUX_SRC = /home/fonchi/vendor/kernel-default-2.6.21/linux-2.6.21
 endif
+ifeq ($(PLATFORM),BeagleBoard)
+LINUX_SRC = ${HOME}/BeagleBoard/kernel
+endif
 
 EXTRA_CFLAGS += -I$(LINUX_SRC)/include
 
3.make all
4.Copy rt73.ko to root file system /etc/Wireless/RT73STA/rt73.ko
5.Booting target
6.Get it work

# insmod /etc/Wireless/RT73STA/rt73.ko
usbcore: registered new interface driver rt73
#
# usb 1-2: new high speed USB device using ehci-omap and address 2
usb 1-2: New USB device found, idVendor=148f, idProduct=2573
usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 1-2: Product: 802.11 bg WLAN
usb 1-2: Manufacturer: Ralink
usb 1-2: configuration #1 chosen from 1 choice
idVendor = 0x148f, idProduct = 0x2573
rausb0 (rt73): not using net_device_ops yet

# iwconfig
lo        no wireless extensions.

usb0      no wireless extensions.

rausb0    RT73 WLAN  ESSID:off/any  Nickname:""
          Mode:Auto  Frequency=2.412 GHz 
          RTS thr:off   Fragment thr:off
          Encryption key:off
          Link Quality=0/100  Signal level:-121 dBm  Noise level:-111 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

# iwpriv
lo        no private ioctls.

usb0      no private ioctls.

rausb0    Available private ioctls :
          set              (8BE2) : set 1024 char  & get   0     
          show             (8BF3) : set 1024 char  & get   0     
          stat             (8BE9) : set 1024 char  & get 1024 char
          get_site_survey  (8BED) : set 1024 char  & get 1024 char
          get_RaAP_Cfg     (8BEF) : set 1024 char  & get   0     
          auth             (8BE7) : set   1 int   & get   0     
          enc              (8BE8) : set   1 int   & get   0     
          wpapsk           (8BEA) : set  64 char  & get   0     
          psm              (8BEB) : set   1 int   & get   0     

# ifconfig rausb0 up
=> usb_rtusb_open
# iwlist rausb0 scan
rausb0    Scan completed :
          Cell 01 - Address: 00:24:01:41:CA:97
                    Mode:Managed
                    ESSID:"Bendi"
                    Channel:1
                    Encryption key:on
                    Bit Rates:0 kb/s
          Cell 02 - Address: 00:90:CC:DD:6E:AC
                    Mode:Managed
                    ESSID:"3F_S/W_AP"
                    Channel:4
                    Encryption key:on
                    Bit Rates:0 kb/s
          Cell 03 - Address: 00:19:5B:25:7E:BE
                    Mode:Managed
                    ESSID:"26962315"
                    Channel:6
                    Encryption key:on
                    Bit Rates:4 Mb/s
          Cell 04 - Address: 00:26:5A:40:C6:EE
                    Mode:Managed
                    ESSID:"dlink"
                    Channel:11
                    Encryption key:on
                    Bit Rates:4 Mb/s

# iwconfig rausb0 essid 3F_S/W_AP
# iwconfig rausb0 mode managed
# iwpriv rausb0 set AuthMode=WPAPSK
# iwpriv rausb0 set EncrypType=TKIP
# MlmeAssocReqAction(): WPA/WPAPSK, Fill the ReqVarIEs with CipherTmp!

# MlmeAssocReqAction(): WPA/WPAPSK, Fill the ReqVarIEs with CipherTmp!
iwpriv rausb0 set WPAPSK=MlmeAssocReqAction(): WPA/WPAPSK, Fill the ReqVarIEs with CipherTmp!
MlmeAssocReqAction(): WPA/WPAPSK, Fill the ReqVarIEs with CipherTmp!
0289131323
# MlmeAssocReqAction(): WPA/WPAPSK, Fill the ReqVarIEs with CipherTmp!

7.USB EHCI with USB hub Problem...

hub 1-0:1.0: port 2 disabled by hub (EMI?), re-enabling...
usb 1-2: USB disconnect, address 5
usb 1-2.1: USB disconnect, address 6
usb 1-2.1.3: USB disconnect, address 8
uvcvideo: Failed to resubmit video URB (-19).
uvcvideo: Failed to resubmit video URB (-19).
uvcvideo: Failed to resubmit video URB (-19).
uvcvideo: Failed to resubmit video URB (-19).
uvcvideo: Failed to resubmit video URB (-19).
unregister_netdev()
usb 1-2.3: USB disconnect, address 7
ehci-omap ehci-omap.0: force halt; handhake d8064814 0000c000 00000000 -> -110

http://markmail.org/message/og4ts5gcn7if4v4l#query:disabled%20by%20hub%20(EMI%3F)%20beagleboard+page:1+mid:xl2txfnz7gvar65u+state:results

確定是H/W issue. BeagleBoard C2/C3都中