在线升级uboot,内核和文件系统

文章由LinuxBoy分享于2019-03-31 11:03:39热评（688）

在线升级uboot,内核和文件系统

fulinux

下面我在fl2440开发板上运行正常的情况下实现更新或升级uboot,内核和文件系统的任务。

如下是一个在线升级的脚本：

#!/bin/sh

#This shell scripts used to update the u-boot linux kernel, root file system image when Linux running

erase_cmd=flash_eraseall

write_cmd=nandwrite

cu_version=`cat /proc/version`

PROG_NAME=`basename $0`

IMAGE_TYPE=

ROOTFS_TYPE=

usage()

{

echo " Usage: $PROG_NAME -[f/k/u/h] [filename]"

echo "Example: $PROG_NAME linuxrom-s3c2440.bin"

echo " $PROG_NAME u-boot-s3c2440.bin"

echo " $PROG_NAME rootfs.jffs2"

echo " $PROG_NAME -u uboot.bin"

echo " $PROG_NAME -k lin.bin"

echo " $PROG_NAME -f fs.yaffs2"

echo " $PROG_NAME -h"

exit;

}

burn_image()

{

partition=$1

file_name=$2

if ( ! $erase_cmd /dev/$partition) ; then

echo "Erase /dev/$partition failure."

exit

if ( ! $write_cmd -p /dev/$partition $file_name) ; then

echo "Write $file_name to /dev/$partition failure."

exit

}

check_and_umount()

{

MTD=$1

MTDBLOCK=mtdblock${MTD:3}

MOUNT_BLOCK=`cat /proc/mounts | grep $MTDBLOCK|awk -F " " '{print $1}'`

if [ -n "$MOUNT_BLOCK" ] ; then

umount /dev/$MTDBLOCK

else

echo "No need umount $MTDBLOCK"

}

check_image_type()

{

IMAGE_NAME=$1

if echo $IMAGE_NAME | grep -E "boot|uboot|u-boot|bootloader" > /dev/null ; then

IMAGE_TYPE=BOOTLOADER

elif echo $IMAGE_NAME | grep -E "linux|kernel" > /dev/null ; then

IMAGE_TYPE=KERNEL

IMAGE_TYPE=ROOTFS

else

IMAGE_TYPE=UNKNOW

}

up_bootloader()

{

IMAGE_FILE=$1

echo "Upgrade bootloader image '$IMAGE_FILE'"

#To-Do: Find the mtd here, only do upgrade if we can find it, or throw error and exit out

#echo $mtd | grep -E "u-boot|uboot" | awk -F ":" '{print $1}'

partition=`cat /proc/mtd | grep -E "uboot|u-boot|U-boot|bootloader" | awk -F ":" '{print $1}'`

if [ -z $partition ] ; then

echo "Can not find the u-boot partition for update!"

exit

#To-Do: Start to burn the image to corresponding partition here

burn_image $partition $IMAGE_FILE

}

up_kernel()

{

IMAGE_FILE=$1

echo "Upgrade linux kernel image '$IMAGE_FILE'"

#To-Do: Find the mtd here, only do upgrade if we can find it, or throw error and exit out

#echo $mtd | grep -E "linux|kernel" | awk -F ":" '{print $1}'

partition=`cat /proc/mtd | grep -E "linux|kernel" | awk -F ":" '{print $1}'`

if [ -z $partition ] ; then

echo "Can not find the kernel partition for update!"

exit

#To-Do: Start to burn the image to corresponding partition here

burn_image $partition $IMAGE_FILE

}

up_rootfs()

{

IMAGE_NAME=$1

ROOTFS_TYPE=${IMAGE_NAME##*.}

VALID_ROOTFS_TYPE=0

echo $ROOTFS_TYPE

for i in jffs2 yaffs2 ubifs ramdisk cramfs ; do

if [ "$i" = "$ROOTFS_TYPE" ] ; then

VALID_ROOTFS_TYPE=1

break;

done

if [ 0 == $VALID_ROOTFS_TYPE ] ; then

echo "============================================================================================"

echo "ERROR: Unknow rootfs image '$IMAGE_NAME', suffix/type: .$ROOTFS_TYPE"

echo "The suffix of rootfs image file name should be: .ramdisk .yaffs2 .jffs2 .ubifs .cramfs"

echo "============================================================================================"

usage

echo "Upgrade $ROOTFS_TYPE rootfs image '$IMAGE_FILE'"

#To-Do: Find the mtd here, only do upgrade if we can find it, or throw error and exit out

MTD=`cat /proc/mtd | grep -E "$ROOTFS_TYPE" | awk -F ":" '{print $1}'`

#To-Do: Check this partition already mounted or not, if mounted then umount it first here

check_and_umount $MTD

#To-Do: Start to burn the image to corresponding partition here

burn_image $MTD $IMAGE_FILE

}

while getopts "afku" opt

case $opt in

IMAGE_TYPE=APPS

shift 1

break;

;;

IMAGE_TYPE=KERNEL

shift 1

break;

;;

IMAGE_TYPE=ROOTFS

shift 1

break;

;;

IMAGE_TYPE=BOOTLOADER

shift 1

break;

;;

usage

;;

usage

;;

esac

done

IMAGE_FILE=$1

if [ ! -n "$IMAGE_FILE" ] ; then

usage

if [ ! -n "$IMAGE_TYPE" ] ; then

check_image_type $IMAGE_FILE

if [ $IMAGE_TYPE == BOOTLOADER ] ; then

up_bootloader $IMAGE_FILE

elif [ $IMAGE_TYPE == KERNEL ] ; then

up_kernel $IMAGE_FILE

elif [ $IMAGE_TYPE == ROOTFS ] ; then

echo "$IMAGE_FILE ***************"

up_rootfs $IMAGE_FILE

else

echo "============================================================================================"

echo "ERROR: Unknow image type: '$IMAGE_NAME'"

echo "============================================================================================"

usage

文件系统如下：

[lingyun@localhost fulinux]$ ls

kernel rootfs systools u-boot

[lingyun@localhost fulinux]$ cd rootfs/

[lingyun@localhost rootfs]$ ls

ramdisk-s3c2440.gz rootfs rootfs_tree.tar.bz2 tools

[lingyun@localhost rootfs]$ cd rootfs

[lingyun@localhost rootfs]$ pwd

/home/lingyun/fulinux/rootfs/rootfs

[lingyun@localhost rootfs]$

因为上面的shell脚本需要用到两个应用程序flash_eraseall和nandwrite所以需要在上面的文件系统里有这两个程序。如果没有添加方式如下：

[lingyun@localhost fulinux]$ ls

kernel rootfs systools u-boot

[lingyun@localhost fulinux]$ cd systools/

[lingyun@localhost systools]$ ls

busybox

[lingyun@localhost systools]$ cd busybox/

[lingyun@localhost busybox]$ ls

build.sh busybox-1.20.2 busybox-1.20.2.tar.bz2 patch

[lingyun@localhost busybox]$ cd busybox-1.20.2

[lingyun@localhost busybox-1.20.2]$

[lingyun@localhost busybox]$ ls

build.sh busybox-1.20.2 busybox-1.20.2.tar.bz2 patch

[lingyun@localhost busybox]$ cd busybox-1.20.2

[lingyun@localhost busybox-1.20.2]$ vt100

[lingyun@localhost busybox-1.20.2]$ make menuconfig

主目录：

Busybox Settings --->

。。。

Installation Options ("make install" behavior) --->

What kind of applet links to install (as soft-links) --->

指定文件系统的目录位置：

(/home/lingyun/fulinux/systools/busybox/../../rootfs/rootfs) BusyBox installation prefix

。。。

回到主目录：

Miscellaneous Utilities --->

选择如下的两个程序：

。。。

[*] nandwrite

。。。

[*] flash_eraseall

。。。

保存退出。

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