Table of Contents
TODO
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, enter abootimg -h in a terminal or read the README.
Usage
- reading current boot image
abootimg -i /dev/mmcblk0p2
- extracting current bootable image
cd /tmp/bootimg abootimg -x /dev/mmcblk0p2
- updating the kernel on a copy of the current bootable image
dd if=/dev/mmcblk0p2 of=/tmp/part-6.img abootimg -u /tmp/part-6.img -k /boot/vmlinuz
<html> <span style=“color:red;font-size:150%;font-weight:bold;”>WARNING</span> </html> : if you want to modify /dev/mmcblk0p2, DO A BACKUP BEFORE AND STORE IT ON A REMOVABLE MEDIA!
Output examples
below there is the output of the previous commands for an AC100-114:
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
Compiling
if your distribution don't provide this tool, follow this method to compile it under Ubuntu Oneiric:
apt-get install libblkid-dev git clone git://gitorious.org/ac100/abootimg.git cd abootimg make cp -p abootimg /usr/local/sbin
References
Greatings
Thank you very much for this great tools ggrandou!