解包
1,boot-unpack
$mkdir -v boot
$unpacking -i boot.img -o boot
这一步将会得到：boot.img-ramdisk.gz
2,ramdisk-unpack
$mkdir ramdisk
$cd ramdisk
$gzip -dc ../boot.img-ramdisk.gz|cpio -i
3,文件修改
$cd ramdisk|ls -al
drwxrwxr-x 10 hl hl 4096 Jun 7 09:27 ./
drwxrwxrwx 3 hl hl 4096 Jun 7 09:26 ../
drwxrwx--x 2 hl hl 4096 Jun 7 09:27 data/
-rw-r--r-- 1 hl hl 129 Jun 7 09:27 default.prop
drwxr-xr-x 2 hl hl 4096 Jun 7 09:27 dev/
-rw-r--r-- 1 hl hl 563 Jun 7 09:27 factory.fstab
-rwxr-x--- 1 hl hl 98736 Jun 7 09:27 init*
-rwxr-x--- 1 hl hl 14259 Jun 7 09:27 init.factory.rc*
-rwxr-x--- 1 hl hl 2344 Jun 7 09:27 init.goldfish.rc*
-rwxr-x--- 1 hl hl 395952 Jun 7 09:27 initlogo.rle*
-rwxr-x--- 1 hl hl 17648 Jun 7 09:27 init.rc*
-rwxr-x--- 1 hl hl 574 Jun 7 09:27 init.tcc8920st.fs.rc*
-rwxr-x--- 1 hl hl 4869 Jun 7 09:27 init.tcc8920st.rc*
-rwxr-x--- 1 hl hl 3178 Jun 7 09:27 init.tcc8920st.usb.rc*
-rwxr-x--- 1 hl hl 2437 Jun 7 09:27 init.tcc8920st.wifi.rc*
drwxr-xr-x 3 hl hl 4096 Jun 7 09:27 lib/
drwxr-xr-x 2 hl hl 4096 Jun 7 09:27 proc/
drwxr-xr-x 3 hl hl 4096 Jun 7 09:27 res/
drwxr-x--- 2 hl hl 4096 Jun 7 09:27 sbin/
drwxr-xr-x 2 hl hl 4096 Jun 7 09:27 sys/
drwxr-xr-x 2 hl hl 4096 Jun 7 09:27 system/
-rw-r--r-- 1 hl hl 272 Jun 7 09:27 ueventd.goldfish.rc
-rw-r--r-- 1 hl hl 3825 Jun 7 09:27 ueventd.rc
-rw-r--r-- 1 hl hl 1862 Jun 7 09:27 ueventd.tcc8920st.rc
4,initlogo.rle* logo文件
$convert -depth 8 logo.png rgb:logo.raw
$to565 -rle < logo.raw > logo.rle
$.././mkbootfs ./ramdisk | gzip > boot.img-ramdisk.gz
打包
$.././mkbootimg --cmdline 'no_console_suspend=1 console=null' --kernel boot.img-zImage --ramdisk boot.img-ramdisk.gz -o boot.img
