根文件系统构建工具制作

1.jffs2文件系统

(1)下载mtd工程源代码，以编译mkfs.jffs2
cvs -d :pserver:[e-mail]:/home/cvs login
注意：password = anoncvs

cvs -d :pserver:[e-mail]:/home/cvs co mtd

(2)切换到utils目录下，make，得到相关工具
cd utils
make
cp mkfs.jffs2 /usr/sbin

(3)使用mkfs.jffs2工具制作jffs2根文件系统映像
事例如下:
原始根文件目录rootfs
目标根文件映像rootfs_jffs2.img

mkfs.jffs2 -o rootfs_jffs2.img -r rootfs -e 0xc000 -l --pad=0x2000000

-e 表示擦除块大小
-l表示little-endian
--pad=0x2000000 表示文件系统大小为0x2000000 bytes，如果不足则使用0xff来填充补满。

具体参数可以参考mkfs.jffs2 --help提示信息

2.yaffs2文件系统

官网：

Using CVS

We operate a cvs server for our active projects. Here we give details of the setup:-

The server is cvs.aleph1.co.uk. If you just want to browse or download code then it's easiest to . This is also the best option if you are behind a firewall that does not allow direct CVS access (which is quite common).

If you want to use cvs directly then public read-only access is available, using the pserver mechanism. Execute the following (bash) commands to set environment variables, (or their equivalent for other shells):

（1）源码下载，以制作mkyaffs2image,mkyaffsimage

方法一：
export CVSROOT=:pserver:[e-mail]:/home/aleph1/cvs cvs logon

(Hit return when asked for a password) 

cvs checkout yaffs2

方法二：

(see below for module names).

Read/write access is by SSH, for which you need an account on the server:
contact [e-mail] to get access or if you are having problems.

Execute the following (bash) commands to set environment variables, (or their equivalent):

export CVS_RSH=ssh export CVSROOT=:ext:@cvs.aleph1.co.uk:/home/aleph1/cvs

where username is the user i.d you have been given on the server.

Then do:

cvs checkout yaffs2

Current modules are: yaffs2 yaffs

(2)切换到utils目录下，make，得到相关工具

cd utils

make

cp mkyaffs2image /usr/sbin

cp mkyaffsimage  /usr/sbin

(3)使用mkyaffs2image工具制作yaffs2根文件系统映像
事例如下:
原始根文件目录rootfs
目标根文件映像rootfs_yaffs2.img

具体参数可以参考mkyaffs2image --help提示信息

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