Mounting file system on mini2440

1. Nfs mounts the root file system

1.1 mini2440 chooses to burn u-boot.bin to NAND flash under NOR

1.2 Mini2440 selects NAND flash to boot and enters the u-boot command line

1.3 Use print to print the development board system information, set the u-boot command, set

printenv

setenv ipaddr 192.168.1.100 // Development board IP

setenv serverip 192.168.1.101   //Windows IP

setenv gatewayip 192.168.1.1 // Gateway

to clay

1.4 Put uImage in the tftpboot directory and load it automatically

Burn uImage to nand Flash

Copy uImage to /tftpboot/

Enter in SecureCRT:

SMDK2440A>tftp 0x30008000 uImage

SMDK2440A>nand erase 0x60000 0x500000

SMDK2440A>nand write 0x30008000 0x60000 0x500000

1.5 And enable NFS file sharing and automatically mount the root file system

1.5.1 Setting up the configuration shared directory

vim /etc/exports

添加：/home/nfsshare/root_qtopia *(rw,sync,no_root_squash)

1.5.2 Set and check:

exportfs -ra

exportfs -v

1.5.3 Enable nfs service

Service nfs restart

1.5.4 Development board parameter settings:

Start the uboot command line and modify the boot parameters:

Setenv bootargs console=ttySAC0 root=/dev/nfs nfsroot=192.168.1.101:/home/nfsshare/root_qtopia ip=192.168.1.100:192.168.1.101:192.168.1.1:255.255.255.0:SMDK2440A.arm9.net:eth0:off

1.6 The overall parameter settings are as follows:

[u-boot@SMDK2440A]# print

bootcmd=nand read 0x30008000 60000 500000;bootm 0x30008000

bootdelay=1

baudrate=115200

ethaddr=08:08:11:18:12:27

embedclub=bmp d 70000

 stdin=serial

stdout=serial

stderr=serial

lcdtype=w

ethact=dm9000

filesize=22E50C

fileaddr=30008000

gatewayip=192.168.1.1

netmask=255.255.255.0

ipaddr=192.168.1.100

serverip=192.168.1.101

bootargs=console=ttySAC0 root=/dev/nfs nfsroot=192.168.1.101:/home/nfsshare/root_qtopia ip=192.168.1.100:192.168.1.101:192.168.1.1:255.255.255.0:SMDK2440A.arm9.net:eth0:off

2. Use yaffs to mount the root file system

2.1. The operation directory is in the /home/yaffs/ directory

Use the mkyaffs2image-128M command to compress root_qtopia into the root_qtopia.img image file

2.2. Start YAFFS startup parameters:

setenv bootargs noinitrd root=/dev/mtdblock3 init=/linuxrc console=ttySAC0

2.3、Burn YAFFS to NandFlash

Copy root_qtopia.img to /tftpboot/

Enter in SecureCRT:

SMDK2440A>tftp 0x30008000 root_qtopia.img

// Download root_qtopia.img to the development board memory at address 0x30008000 through tftp server

SMDK2440A>nand erase 0x560000 $filesize

//First erase Nand Flash starting from 0x560000, the size of 0x3dac00 to store root_qtopia.img

SMDK2440A>nand write.yaffs 0x30008000 0x560000 $filesize 

//Burn root_qtopia.img to Nand Flash starting at 0x560000

SMDK2440A> boot //Start the Linux system