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--- abootimg [2011/08/15 18:22] – created ggrandou
+++ abootimg [2012/02/15 00:35] – [Usage] armelf
@@ Line 1: / Line 1: @@
 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 [[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>
+<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 REMOVABLE MEDIA!
+===== Output examples =====
+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
++0 records in
++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>
+====== Compiling ======
+if your distribution don't provide this tool, follow this method to compile it under [[installing_linux#ubuntu_oneiric|Ubuntu Oneiric]]:
+<code>
+apt-get install libblkid-dev
+git clone git://gitorious.org/ac100/abootimg.git
+cd abootimg
+make
+cp -p abootimg /usr/local/sbin
+</code>
+====== References ======
+[[http://android.git.kernel.org/?p=platform/system/core.git;a=tree;f=mkbootimg|The official tool used to create boot images is part of the Android Project]]
+[[http://android-dls.com/wiki/index.php?title=HOWTO:_Unpack%2C_Edit%2C_and_Re-Pack_Boot_Images#Alternative_Method|HOWTO: Unpack, Edit, and Re-Pack Boot Images]]
+====== Greatings ======
+Thank you very much for this great tools ggrandou! ;-)