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====== abootimg ======
project's home page http://gitorious.org/ac100/abootimg
====== Introduction ======
abootimg is a tool created by Gilles Grandou for manipulating Android Boot Images directly from the AC100 (Be carefull to not mess your bootimg otherwise you will need the free tool [[putusb]] or the proprietary NVidia's [[nvflash]] to flash again a bootable image). abootimg can work directly on block devices, or, the safest way, on a file image.
  
For further informations, read the [[http://gitorious.org/ac100/abootimg/blobs/master/README|README]].
  
====== Usage ======
  *reading current boot image
<code>
abootimg -i /dev/mmcblk0p2
</code>
  *extracting current bootable image
<code>
cd /tmp/bootimg
abootimg -x /dev/mmcblk0p2
</code>
  *updating the kernel on a copy of the current bootable image
<code>
  dd if=/dev/mmcblk0p2 of=/tmp/part-6.img
  abootimg -u /tmp/part-6.img -k /boot/vmlinuz
</code>
===== Outputs example =====
below there is the output of the previous commands for an AC100-114:
<code>
root@ac100:/tmp/bootimg# abootimg -i /dev/mmcblk0p2

Android Boot Image Info:

* file name = /dev/mmcblk0p2 [block device]

* image size = 8388608 bytes (8.00 MB)
  page size  = 2048 bytes

* Boot Name = "Ubuntu Boot Img"

* kernel size       = 3146584 bytes (3.00 MB)
  ramdisk size      = 2310081 bytes (2.20 MB)

* load addresses:
  kernel:       0x10008000
  ramdisk:      0x11000000
  tags:         0x10000100

* cmdline = mem=448M@0M tegrapart=recovery:300:a00:800,boot:d00:1000:800,mbr:1d00:200:800 root=UUID=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx zcache debug verbose console=tty0 console=ttyGS0,115200n8 console-setup/layoutcode=fr console-setup/variantcode=oss locale=fr_FR

* id = 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000

root@ac100:/tmp/bootimg# abootimg -x /dev/mmcblk0p2
writing boot image config in bootimg.cfg
extracting kernel in zImage
extracting ramdisk in initrd.img
root@ac100:/tmp/bootimg# ls -1
bootimg.cfg
initrd.img
zImage

root@ac100:/tmp/bootimg# dd if=/dev/mmcblk0p2 of=/tmp/part-6.img
16384+0 records in
16384+0 records out
8388608 bytes (8.4 MB) copied, 0.430688 s, 19.5 MB/s
root@ac100:/tmp/bootimg# abootimg -u /tmp/part-6.img -k /boot/vmlinuz-2.6.38-1001-ac100 
reading kernel from /boot/vmlinuz-2.6.38-1001-ac100
Writing Boot Image /tmp/part-6.img
</code>

====== Greatings ====== 
Thank you very much for this great tools ggrandou! ;-)