bluetooth
1) download source tree of anroid donut from Google.
2) build android by 
  . build/envsetup.sh
  choosecombo (all default option, Product choices are: 2. generic)
  make -j4
3) replace external/bluetooth, and 'export BOARD_HAVE_BLUETOOTH=true'
4) mmm external/bluetooth/glib
   mmm external/bluetooth/bluez
-------------------------------------------------------------------------------
dhcpcd
1) download source tree of anroid froyo from Google.
2) build android by 
  . build/envsetup.sh
  choosecombo (all default option, Product choices are: 2. generic)
  make -j4
3) replace external/dhcpcd
4) mmm external/dhcpcd
-------------------------------------------------------------------------------
jhead
1) download source tree of anroid froyo from Google.
2) build android by 
  . build/envsetup.sh
  choosecombo (all default option, Product choices are: 2. generic)
  make -j4
3) replace external/jhead
4) mmm external/jhead
-------------------------------------------------------------------------------
skia
1) download source tree of anroid froyo from Google.
2) build android by 
  . build/envsetup.sh
  choosecombo (all default option, Product choices are: 2. generic)
  make -j4
3) replace external/skia
4) mmm external/skia
-------------------------------------------------------------------------------
sonivox
1) download source tree of anroid froyo from Google.
2) build android by 
  . build/envsetup.sh
  choosecombo (all default option, Product choices are: 2. generic)
  make -j4
3) replace external/sonivox
4) mmm external/sonivox
-------------------------------------------------------------------------------
tcpdump
1) download source tree of anroid froyo from Google.
2) build android by 
  . build/envsetup.sh
  choosecombo (all default option, Product choices are: 2. generic)
  make -j4
3) replace external/tcpdump
4) mmm external/tcpdump
-------------------------------------------------------------------------------
wpa_supplicant_6
1) download source tree of anroid froyo from Google.
2) build android by 
  . build/envsetup.sh
  choosecombo (all default option, Product choices are: 2. generic)
  make -j4
3) replace external/wpa_supplicant_6
4) mmm external/wpa_supplicant_6/wpa_supplicant
-------------------------------------------------------------------------------

kernel
1) download source tree of android honeycomb from Google.

2) get source of "device" and "vendor" folder from nVidia. (version: 11.2.12)

3) edit android\device\nvidia\ventana\init.ventana.rc
before:
-----------
on fs
    mount ext4 /dev/block/mmcblk0p3 /system wait ro
    setprop ro.crypto.tmpfs_options size=128m,mode=0771,uid=1000,gid=1000
    mount ext4 /dev/block/mmcblk0p7 /data wait noatime nosuid nodev
    mount ext4 /dev/block/mmcblk0p4 /cache wait noatime nosuid nodev
-----------

after:
-----------
on fs
    symlink /dev/block/mmcblk3p12 /dev/general_setting
    symlink /dev/block/mmcblk3p15 /dev/fa
    symlink /dev/block/mmcblk3p16 /dev/otp
    chown root system /dev/block/mmcblk3p12
    chmod 0660 /dev/block/mmcblk3p12
    chown root system /dev/block/mmcblk3p15
    chmod 0660 /dev/block/mmcblk3p15
    chown root system /dev/block/mmcblk3p5
    chmod 0660 /dev/block/mmcblk3p5

    mount ext4 /dev/block/mmcblk3p3 /system wait ro
    setprop ro.crypto.tmpfs_options size=128m,mode=0771,uid=1000,gid=1000
    mount ext3 /dev/block/mmcblk3p7 /data wait noatime nosuid nodev
    mount ext3 /dev/block/mmcblk3p4 /cache wait noatime nosuid nodev
-----------

4) replace kernel

5) build kernel by 
  . build/envsetup.sh
choosecombo

Build for the simulator or the device?
     1. Device
     2. Simulator

Which would you like? [1] 1


Build type choices are:
     1. release
     2. debug

Which would you like? [1] 1


Which product would you like? [full] ventana


Variant choices are:
     1. user
     2. userdebug
     3. eng
Which would you like? [eng] 3

  
6) make -j4 bootimage

-------------------------------------------------------------------------------