本文共 2324 字，大约阅读时间需要 7 分钟。

00. 目录

01. sd_fusing.sh脚本分析

## Copyright (C) 2011 Samsung Electronics Co., Ltd.#              http://www.samsung.com/## This program is free software; you can redistribute it and/or modify# it under the terms of the GNU General Public License version 2 as# published by the Free Software Foundation.######################################./sd_fusing.sh /dev/sdb#-z 判断参数是否为空if [ -z $1 ]then    echo "usage: ./sd_fusing.sh 
   
    "    exit 0fi#-b 判断传递的第一个参数是否为块设备if [ -b $1 ]then    echo "$1 reader is identified."else    echo "$1 is NOT identified."    exit 0fi#####################################
    
     #basename /dev/sdb  ---> sdbBDEV_NAME=`basename $1`#获取磁盘的大小BDEV_SIZE=`cat /sys/block/${
    BDEV_NAME}/size`#表示没有插入SD卡if [ ${BDEV_SIZE} -le 0 ]; then	echo "Error: NO media found in card reader."	exit 1fi#SD卡的大小不能超过32000000if [ ${BDEV_SIZE} -gt 32000000 ]; then	echo "Error: Block device size (${BDEV_SIZE}) is too large"	exit 1fi##################################### check files#u-boot.bin的文件E4412_UBOOT=../../u-boot.bin#工具MKBL2=../mkbl2#判断u-boot.bin是否存在if [ ! -f ${E4412_UBOOT} ]; then	echo "Error: u-boot.bin NOT found, please build it & try again."	exit -1fi#判断mkbl2工具是否存在if [ ! -f ${MKBL2} ]; then	echo "Error: can not find host tool - mkbl2, stop."	exit -1fi#生成bl2#
     
      ${MKBL2} ${E4412_UBOOT} bl2.bin 14336##################################### fusing imagessigned_bl1_position=1bl2_position=17uboot_position=49tzsw_position=705#烧写bl1#
      
       echo "---------------------------------------"echo "BL1 fusing"#dsync表示同步dd iflag=dsync oflag=dsync if=./E4412_N.bl1.bin of=$1 seek=$signed_bl1_position#烧写bl2#
       
        echo "---------------------------------------"echo "BL2 fusing"#dsync表示同步dd iflag=dsync oflag=dsync if=./bl2.bin of=$1 seek=$bl2_position#烧写uboot#
        
         echo "---------------------------------------"echo "u-boot fusing"dd iflag=dsync oflag=dsync if=${E4412_UBOOT} of=$1 seek=$uboot_position#烧写信任区域#
         
          echo "---------------------------------------"echo "TrustZone S/W fusing"dd iflag=dsync oflag=dsync if=./E4412_tzsw.bin of=$1 seek=$tzsw_position#同步#
          
           sync#####################################
           
            echo "---------------------------------------"echo "U-boot image is fused successfully."echo "Eject SD card and insert it again."
           
          
         
        
       
      
     
    
   

02. 附录

sd_fusing.sh在uboot目录中。

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