Android userland for bc9 (2/2)

Android
Android userland for bc9 (1/2)

Setting up Android userland 2 †

Preparing Android userland †

When build is finished, a set of Android userland will be built in

~/mydroid/out/target/product/generic/

For following reasons, we put a Android userland on a USB flash memory, not directory on gumstix's onboard FlashROM.

• gumstix's jffs2 can't be accept mmap.
  
• gumstix's onboard FlashROM is too small to put a Android userland (It requires almost 70M bytes space.)
  

Actual procedures are as follows.

• Formating a USB flash memory with ext2 file system
  Connect a USB flash memory to the build machine. USB flash memory will be automatically mounted on /media/disk.

  # umount /media/disk
  # fdisk /dev/sdb1 (You may do this with gparted etc.)
  # mkfs.ext2 /dev/sdb1　(You may do this with gparted etc.)

• Copying a built Android userland into a USB flash memory
  After formating and making file system, once disconnect a USB flash memory from build machine and re-connect it. Then:

  # cd /media/disk
  # mkdir android-root
  # cp -a /home/beat/mydroid/out/target/product/generic/root/* .
  # cp -a /home/beat/mydroid/out/target/product/generic/data/* data/  data 
  # cp -a /home/beat/mydroid/out/target/product/generic/system/* system/
  # chown -R root.root *
  # chmod -R 777 data/ system/
  # ls
  data          dev   init.goldfish.rc  proc  sys
  default.prop  init  init.rc           sbin  system

• Fixing the init setting file and key layout file contents
  
  • Disable yaffs2 mount by commenting out yaffs2 mount strings in the init.rc.
    yaffs2 mount is only relevant to Android dev phone/G1 phone.
    

    diff -u init.rc.orig init.rc
    --- init.rc.orig	2009-03-31 12:50:16.000000000 +0900
    +++ init.rc	2009-03-31 12:57:19.000000000 +0900
    @@ -36,16 +36,16 @@
    
    # mount mtd partitions
         # Mount /system rw first to give the filesystem a chance to save a checkpoint
    -    mount yaffs2 mtd@system /system 
    -    mount yaffs2 mtd@system /system ro remount
    +//    mount yaffs2 mtd@system /system 
    +//    mount yaffs2 mtd@system /system ro remount
    
         # We chown/chmod /data again so because mount is run as root + defaults
    -    mount yaffs2 mtd@userdata /data nosuid nodev
    +//    mount yaffs2 mtd@userdata /data nosuid nodev
         chown system system /data
         chmod 0771 /data
    
        # Same reason as /data above
    -    mount yaffs2 mtd@cache /cache nosuid nodev
    +//    mount yaffs2 mtd@cache /cache nosuid nodev
         chown system cache /cache
         chmod 0770 /cache

• Modifying the hardware key behavior assignment file

  system/usr/keylayout/qwerty.kl

  Modify this file as follows:

  diff -u qwerty.kl.orig qwerty.kl.new 
  --- qwerty.kl.orig	2009-03-31 13:20:22.000000000 +0900
  +++ qwerty.kl.new	2009-03-31 13:36:09.000000000 +0900
  @@ -12,8 +12,8 @@
   key 158   BACK              WAKE_DROPPED
   key 230   SOFT_RIGHT        WAKE
   key 60    SOFT_RIGHT        WAKE
  -key 107   ENDCALL           WAKE_DROPPED
  -key 62    ENDCALL           WAKE_DROPPED
  +key 107   ENDCALL           WAKE
  +key 88    ENDCALL           WAKE
   key 229   MENU              WAKE_DROPPED
   key 139   MENU              WAKE_DROPPED
   key 59    MENU              WAKE_DROPPED
  @@ -26,12 +26,14 @@
   key 232   DPAD_CENTER       WAKE_DROPPED
   key 108   DPAD_DOWN         WAKE_DROPPED
   key 103   DPAD_UP           WAKE_DROPPED
  -key 102   HOME              WAKE 
   key 105   DPAD_LEFT         WAKE_DROPPED
   key 106   DPAD_RIGHT        WAKE_DROPPED
   key 115   VOLUME_UP
   key 114   VOLUME_DOWN
   key 116   POWER             WAKE
  +key 63	  MENU	            WAKE
  +key 66    HOME              WAKE
  +key 67	  BACK	            WAKE
   key 212   CAMERA
   
   key 16    Q

  This modifiction enabled "Go to home" key behavior.
  When you want to check what key on keyboard is refered by a number, please see this include file.
  

  ~/gumstix/gumstix-oe/tmp/work/gumstix-custom-verdex-angstrom-linux-gnueabi/gumstix-kernel-2.6.24-r1/linux-2.6.24/include/linux/input.h