frustrated with android building

[joek]

Hello guys,my name is Joe,i would like to share with you my problem that i am experiencing with android build for A13 tablet similar to olinuxino A13 "q8_a13_tablet_defconfig" and i hope you will help me boot android successfully.
So first i am using Ubuntu 14.04 LTS 64bit,and i am willing to boot from sdcard.
I have Android 4.3.1 source from AOSP and Linux 3.4 and uboot from sunxi.
First,for test purposes i followed all instructions on https://linux-sunxi.org/Manual_build_howto to compile linux kernel and uboot and building the script.bin and boot.scr,and then flash them on my "MicroSd HC class 4 8GB" sdcard.i also downloaded a linaro rootfs and all boot successfully.
When building the linux kernel i am only enabling the "ThumbEE cpu" and the wifi drivers.
When building the uboot i am only enabling the "Workaround to boot old kernel".And all is ok and it's booting with no problem even the wifi worked.
Note:for the above instructions i am using

Code Select Expand

CROSS_COMPILE=arm-linux-gnueabihf- for both kernel and uboot.My arm-linux-gnueabihf- version is 4.7.3 linaro,and same for gcc.

Now i decided to start building the android 4.3.1 source and i copied the "device/softwinner" folder from android4.1 wish it comes in a tar file downloaded form Olinuxino github.
i modified the init files (replaced all "nandx" variables with "mmcblk0px".
My sdcard partitions look like this:

• /dev/sdc1    16MiB    bootloader    VFAT    Files to assist the bootloader.
  /dev/sdc2    36MiB    boot    EXT4    ramdisk
  /dev/sdc3    500 MiB    system    EXT4    Android's /system partition
  /dev/sdc4    Fill all space    extend    Extend Partition
  /dev/sdc5    300MiB    data    EXT4    
  /dev/sdc6    16 MiB    misc    EXT4    
  /dev/sdc7    36 Mib    recovery    EXT4    Android's recovery partition
  /dev/sdc8    125 MiB    cache    EXT4    
  /dev/sdc9    16 MiB    private    EXT4    
  /dev/sdc10    1-2 GiB    UDISK    VFAT

from https://linux-sunxi.org/Boot_Android_from_SdCard
i tried couple ways for formating the sdcard ,one way using Gparted" and the second way using the instruction from the above page.
here is the init.sun5i.rc:

• import init.sun5i.usb.rc
  
  on early-init
     export EXTERNAL_STORAGE /mnt/sdcard
     mkdir /mnt/sdcard 0000 system system
     # for backwards compatibility
     symlink /mnt/sdcard /sdcard
  
     mkdir /mnt/extsd 0000 system system
     mkdir /mnt/usbhost1 0000 system system
     mkdir /databk 0700 root  system
  
  on fs
      mount ext4 /dev/mmcblk0p3 /system wait noatime nodev barrier=0
  
  # try to mount /data
     wait /dev/mmcblk0p5
     mount ext4 /dev/mmcblk0p5 /data wait noatime nosuid nodev barrier=0
     setupfs /dev/mmcblk0p5
     umount /data
     exec /system/bin/logwrapper /system/bin/e2fsck -y /dev/mmcblk0p5
     exec /system/bin/busybox mount -t ext4 -o noatime,nosuid,nodev,barrier=0,journal_checksum,noauto_da_alloc /dev/mmcblk0p5 /data
  
  # try to mount /cache
      mount ext4 /dev/mmcblk0p8 /cache wait noatime nosuid nodev barrier=0
     setupfs /dev/mmcblk0p8
     umount /cache
      exec /system/bin/logwrapper /system/bin/e2fsck -y /dev/mmcblk0p8
      exec /system/bin/busybox mount -t ext4 -o noatime,nosuid,nodev,barrier=0,journal_checksum,noauto_da_alloc /dev/mmcblk0p8 /cache
  
      format_userdata /dev/mmcblk0p10 NUCLEAR
     
  #try to format /databk
      wait /dev/mmcblk0p11
      mount ext4 /dev/mmcblk0p11 /databk wait noatime nosuid nodev barrier=0
       setupfs /dev/mmcblk0p11
       umount /databk
      rmdir /databk
  
  on boot
  
     #insmod key & tp driver
     insmod /system/vendor/modules/sun4i-ts.ko
  #   insmod /system/vendor/modules/sun4i-keyboard.ko
  
     #insmod mali driver
     insmod /system/vendor/modules/ump.ko
     insmod /system/vendor/modules/mali.ko
  
      #insmod video driver
      insmod /system/vendor/modules/cedarx.ko
  
  #csi module
     insmod /system/vendor/modules/videobuf-core.ko
     insmod /system/vendor/modules/videobuf-dma-contig.ko
  
  #network module
     insmod /system/vendor/modules/asix.ko bsize=0
     insmod /system/vendor/modules/qf9700.ko
     insmod /system/vendor/modules/mcs7830.ko
     insmod /system/vendor/modules/8188eu.ko
  
  
  
  # WEXT: only support sta
  #service wpa_supplicant /system/bin/wpa_supplicant -Dwext -iwlan0 \
  #   -c/data/misc/wifi/wpa_supplicant.conf -e/data/misc/wifi/entropy.bin
  #   class main
  #    socket wpa_wlan0 dgram 660 wifi wifi
  #    group system wifi inet
  #    disabled
  #    oneshot
  
  # 1.1 realtek wifi sta service
  service wpa_supplicant /system/bin/wpa_supplicant -iwlan0 -Dnl80211 -c/data/misc/wifi/wpa_supplicant.conf -e/data/misc/wifi/entropy.bin
     class main
     socket wpa_wlan0 dgram 660 wifi wifi
     disabled
     oneshot
  
  # 1.2 realtek wifi sta p2p concurrent service
  service p2p_supplicant /system/bin/wpa_supplicant \
     -ip2p0 -Dnl80211 -c/data/misc/wifi/p2p_supplicant.conf -e/data/misc/wifi/entropy.bin -N \
     -iwlan0 -Dnl80211 -c/data/misc/wifi/wpa_supplicant.conf
     class main
     socket wpa_wlan0 dgram 660 wifi wifi
     disabled
     oneshot
  
  

Here is my boot.cmd script:

• setenv bootm_boot_mode sec
  setenv bootargs root=/dev/mmcblk0p2 loglevel=8 rootwait console=ttyS0,115200 rw init=/init mac_addr=00:AE:99:A3:E4:AF
  load mmc 0:1 0x43000000 script.bin || load mmc 0:1 0x43000000 boot/script.bin
  load mmc 0:1 0x42000000 uImage || load mmc 0:1 0x42000000 boot/uImage
  bootm 0x42000000

The "prebuilts" folder inside the android source "../prebuilts/gcc/linux-x86/" has multiple toolchains "arm-eabi-4.6","arm-eabi-4.7","arm-linux-androideabi-4.6","arm-linux-androideabi-4.7".
I tried to compile the linux kernel and uboot using all these versions and ofcource i tried first with "arm-linux-gnueabihf-"and i tried to use uImage and zImage converted to uImage using mkimage command.
When i boot the board,the uboot comes first and post some commands on screen,then it loads the kernel with no problem,when the kernel loaded the android logo appears and that's it,it hangs here.
Now i tried to hack the problem by adding mkdir after " mount ext4 /dev/mmcblk0p3 /system wait noatime nodev barrier=0" but with no luck.
I am out of ideas,i will be glad if someone really help me know what is going on and fix the problem,maybe it is a crosscompiler issue.
Thank you for your time,appreciate your reply.

[joek]

I would like also to know,should i compile the kernel and uboot with the same toolchain that compiled android source?
What Image should i use:zImage or converted zImage or just the uImage althought i tried them all.
I also enabled android device drivers in menuconfig of the kernel build.
I did lots of researches about compiling android kernels and the android boot process,all i found is just scripts and few lines of commands, i cant really find a clear declaration on how to configure android for a real device.

[joek]

Anybody?