mirror of
https://github.com/xiaolu/mkbootimg_tools.git
synced 2026-02-14 05:59:29 +01:00
146 lines
4.4 KiB
Bash
Executable File
146 lines
4.4 KiB
Bash
Executable File
#!/bin/bash
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#boot.img tools
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trap "clean" 2 3 4
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workdir=$(pwd)
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mkbootimg_dtb=./mkbootimg_dtb
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mkbootimg=./mkbootimg
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C_H1="\033[1;32m"
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C_CLEAR="\033[0;0m"
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pout() {
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printf "${C_H1}${*}${C_CLEAR}\n"
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}
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clean()
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{
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rm -rf /tmp/mkboot.*
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pout "cleanup...."
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exit
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}
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if [ $# -lt 2 ] || [ ! -f $1 ] || ([ ! -z $3 ] && [ ! -e $2 ]); then
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pout "Not enough parameters or parameter error!\n"
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pout "repack boot.img：\n\t$(basename $0) [img] [ramdisk.gz or ramdisk dir] [newbootfile]"
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pout "\t$(basename $0) boot.img ramdisk newboot.img"
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pout "unpack boot.img & decompress ramdisk：\n\t$(basename $0) [img] [output dir]"
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pout "\t$(basename $0) boot.img boot20130905"
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clean
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fi
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#If only two parameters, unpack boot.img.
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if [ -z $3 ]; then
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tempdir="$(readlink -f $2)"
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rm -rf $tempdir
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mkdir -p $tempdir
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pout "Unpack & decompress $1 to $2"
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else
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tempdir=$(mktemp -d /tmp/mkboot.XXXX)
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pout "Repack $1 & ramdisk $2 to $3"
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fi
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cp -f $1 $tempdir/
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cd $tempdir
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bootimg=$(basename $1)
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offset=$(grep -abo ANDROID! $bootimg | cut -f 1 -d :)
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[ -z $offset ] && clean
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if [ $offset -gt 0 ]; then
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dd if=$bootimg of=bootimg bs=$offset skip=1 2>/dev/null
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bootimg=bootimg
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fi
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kernel_size=$(od -A n -D -j 8 -N 4 $bootimg | sed 's/ //g')
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kernel_addr=0x$(od -A n -H -j 12 -N 4 $bootimg | sed 's/ //g')
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base_addr=0x$(od -A n -h -j 14 -N 2 $bootimg | sed 's/ //g')0000
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ramdisk_size=$(od -A n -D -j 16 -N 4 $bootimg | sed 's/ //g')
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ramdisk_addr=0x$(od -A n -H -j 20 -N 4 $bootimg | sed 's/ //g')
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second_size=$(od -A n -D -j 24 -N 4 $bootimg | sed 's/ //g')
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second_addr=0x$(od -A n -H -j 28 -N 4 $bootimg | sed 's/ //g')
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tags_addr=0x$(od -A n -H -j 32 -N 4 $bootimg | sed 's/ //g')
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page_size=$(od -A n -D -j 36 -N 4 $bootimg | sed 's/ //g')
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dtb_size=$(od -A n -D -j 40 -N 4 $bootimg | sed 's/ //g')
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#dtb_addr=0x$(od -A n -H -j 44 -N 4 $bootimg | sed 's/ //g')
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cmd_line=$(od -A n --strings -j 64 -N 512 $bootimg)
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k_count=$(((kernel_size+page_size-1)/page_size))
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r_count=$(((ramdisk_size+page_size-1)/page_size))
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s_count=$(((second_size+page_size-1)/page_size))
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d_count=$(((dtb_size+page_size-1)/page_size))
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#k_offset=$page_size
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#r_offset=$((k_offset+(n*page_size)))
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#s_offset=$((r_offset+(m*page_size)))
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#d_offset=$((s_offset+(o*page_size)))
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k_offset=1
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r_offset=$((k_offset+k_count))
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s_offset=$((r_offset+r_count))
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d_offset=$((s_offset+s_count))
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dd if=$bootimg of=zImage_tmp bs=$page_size skip=$k_offset count=$k_count 2>/dev/null
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dd if=zImage_tmp of=zImage bs=$kernel_size count=1 2>/dev/null
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if [ -z $3 ]; then
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dd if=$bootimg of=ramdisk_tmp bs=$page_size skip=$r_offset count=$r_count 2>/dev/null
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dd if=ramdisk_tmp of=ramdisk.gz bs=$ramdisk_size count=1 2>/dev/null
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fi
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if [ $dtb_size -gt 0 ]; then
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dd if=$bootimg of=dt.img_tmp bs=$page_size skip=$d_offset count=$d_count 2>/dev/null
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dd if=dt.img_tmp of=dt.img bs=$dtb_size count=1 2>/dev/null
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dt="$tempdir/dt.img"
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fi
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rm -f *_tmp $(basename $1) $bootimg
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kernel="$tempdir/zImage"
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ramdisk=$tempdir/ramdisk.gz
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[ ! -f $kernel ] && clean
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#print boot.img info
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pout " kernel : $kernel"
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pout " ramdisk : $ramdisk"
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pout " page_size : $page_size"
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pout " base_addr : $base_addr"
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pout " kernel size : $kernel_size"
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pout " kernel_addr : $kernel_addr"
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pout " ramdisk_size : $ramdisk_size"
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pout " ramdisk_addr : $ramdisk_addr"
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pout " second_size : $second_size"
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pout " second_addr : $second_addr"
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if [ $dtb_size -gt 0 ]; then
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pout " dtb_size : $dtb_size"
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pout " tags_addr : $tags_addr"
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fi
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pout " cmdline : $cmd_line"
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#decompression ramdisk.gz
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if [ -z $3 ]; then
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mkdir ramdisk
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cd ramdisk
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gzip -d -c ../ramdisk.gz | cpio -i -d -m --no-absolute-filenames 2>/dev/null
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#Unpack Finish to exit.
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pout "Unpack completed."
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exit
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fi
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cd $workdir
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ramdisk=$2
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#if ramdisk is a directory,create ramdisk.gz
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if [ -d $2 ]; then
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cd $2
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find . | cpio -R 0:0 -H newc -o 2>/dev/null | gzip > $tempdir/ramdisk.gz
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ramdisksize=$(stat -c "%s" $tempdir/ramdisk.gz)
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ramdisk="$tempdir/ramdisk.gz"
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cd $workdir
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fi
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rm -f $3
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if [ $dtb_size -gt 0 ]; then
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$mkbootimg_dtb --kernel $kernel --ramdisk $ramdisk \
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--base $base_addr --offset $ramdisk_addr \
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--tags-addr $tags_addr --cmdline "$cmd_line" --dt $dt -o $3
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else
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$mkbootimg --kernel $kernel --ramdisk $ramdisk \
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--base $base_addr --ramdiskaddr $ramdisk_addr \
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--cmdline "$cmd_line" -o $3
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fi
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ramdisksize=$(stat -c "%s" $ramdisk)
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bootsize=$(stat -c "%s" $3)
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pout "Kernel size: $kernel_size, new ramdisk size: $ramdisksize, $(basename $3): $bootsize."
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pout "$(basename $3) has been created."
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clean
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