Linux-2.6.28内核移植及Yaffs文件系统制作 for FL2440（二）

1.新建根目录

mkdir rootfs

2.建立根目录下的子目录

cd rootfs
mkdir bin dev etclib proc sbin sys usr mnt tmp var
mkdir usr/binusr/lib usr/sbin lib/modules

3.创建设备文件

cd /dev
mknod -m 666 consolec 5 1
mknod -m 666 nullc 1 3

改变执行权限

chmod 777 *

3.配置etc目录下文件及文件夹，必须对以下文件及文件夹都用chmod 777 *修改权限

新建group文件

内容如下:

root:*:0:
daemon:*:1:
bin:*:2:
sys:*:3:
adm:*:4:
tty:*:5:
disk:*:6:
lp:*:7:lp
mail:*:8:
news:*:9:
uucp:*:10:
proxy:*:13:
kmem:*:15:
dialout:*:20:
fax:*:21:
voice:*:22:
cdrom:*:24:
floppy:*:25:
tape:*:26:
sudo:*:27:
audio:*:29:
ppp:x:99:
500:x:500:plg
501:x:501:fa

新建inittab文件

内容如下:

# /etc/inittab
::sysinit:/etc/init.d/rcS
console::askfirst:-/bin/sh
::ctrlaltdel:/sbin/reboot
::shutdown:/bin/umount -a –r

新建passwd文件

内容如下：

root::0:0:root:/:/bin/sh
ftp::14:15:FTP User:/var/ftp:
bin:*:1:1:bin:/bin:
daemon:*:2:2:daemon:/sbin:
nobody:*:99:99:Nobody:/:
jacob::502:502:Linux User,,,:/home/jacob:/bin/sh

新建fstab系统挂载文件系统列表文件
内容如下:

# device	mount-point	type		options		dump		fsck order
none		/proc		proc		defaults	0			0
none		/dev/pts	devpts 		mode=0622  	0  			0
tmpfs		/dev/shm	tmpfs 		defaults	0			0

新建init.d/rcS:系统启动加载项，内容如下：

#!/bin/sh

PATH=/sbin:/bin:/usr/sbin:/usr/bin
runlevel=S
prevlevel=N
umask 022
export PATHrunlevel prevlevel

#
#    Trap CTRL-C &c only in this shell so wecan interrupt subprocesses.
#
/bin/mount -t procnone /proc
/bin/mount -ttmpfs none /tmp
/bin/mount -ttmpfs none /var

/bin/mkdir -p/var/log

/bin/hostname -F/etc/sysconfig/HOSTNAME

新建sysconfig/HOSTNAME文件

内容如下：

FL2440

mkdir profile文件

内容如下：

#Ash profile
#vim: syntax=sh
#No core files by default
#ulimit -S -c 0 > /dev/null 2>&1
USER="'id -un'"
LOGNAME=$USER
PS1='[FL2440]#'
PATH=$PATH:/usr/local/bin
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib
HOSTNAME='/bin/hostname'
export USER LOGNAME PS1 PATH LD_LIBRARY_PATH

新建resolv.conf文件，内容如下：

nameserver 61.144.56.100

"home"目录：创建一个 jacob目录，与etc目录passwd文件中的jacob相对应

"lib"目录：这个里面放的都是库文件,由于我busybox是用静态链接，所以不用拷贝交叉编译器中库文件。

注意一个路径是这样的 /etc/init.d/rcS, rcS是文件

4.编译内核模块，内核配置如上。

进入内核根目录

make modulesARCH=arm CROSS_COMPILE=arm-linux-

5.安装内核模块

makemodules_install ARCH=arm INSTALL_MOD_PATH=/xxx/rootfs

6.配置busybox(在busybox源代码中)

进入busybox目录执行

make menuconfig

Busybox Settings--->
General Configuration --->
Buffer allocation policy (Allocatewith Malloc) --->
[*] Show verbose applet usage messages
[*] Support --install [-s] to installapplet links at runtime
[*] Enable locale support (system needslocale for this to work)
[*] Support for devfs
[*] Use the devpts filesystem forUnix98 PTYs
[*] Runtime SUID/SGID configuration via/etc/busybox.conf
[*] Suppress warning message if/etc/busybox.conf is not readable
(/proc/self/exe) Path to BusyBox executable
Build Options --->
[*] Build BusyBox as a static binary(no shared libs)  //选中"Build busybox as a static binary",静态链接

[*] Build with Large File Support (foraccessing files > 2 GB)
[*]Do you want to build BusyBoxwith a Cross Compiler?
(arm-linux-) cross Compiler prefix   //  填写交叉编译前缀
Installation Options --->
[ *] Don't use /usr         //选中“Don'tuse /usr”,选中该项可以避免busybox被安装到宿主系统的/usr目录下，破坏宿主系统
Applets links (as soft-links)--->
(/xxxx/rootfs) BusyBox installationprefix   //填写你的安装路径
Busybox Library Tuning --->
(2) MD5: Trade Bytes for Speed

Linux ModuleUtilities --->
(/lib/modules) Default directory containingmodules
(modules.dep) Default name of modules.dep
[*] insmod
[*] rmmod
[*] lsmod
[*]lsmodpretty output for 2.6.x Linux kernels
[*] modprobe
[*]  Multipleoptions parsing
--- Options common to multiple modutils
[*] Support tainted module checking withnew kernels
[*] Support version 2.6.x Linux kernels

7.编译，安装busybox

make arch=ARMCROSS COMPILE=arm-linux-
make install

在sbin中看init检查busybox安装成功与否

Yaffs2文件系统制作工具：
http://arm9download.cncncn.com/linux/mkyaffs2image.tgz 最后执行：

mkyaffs2image-128M rootfs rootfs.bin