General process of building and debugging the development environment of the android Development Board

Step 1: configure the host NFS service

A. Confirm the Virtual Machine IP Address
[Duli @] ifconfig // view the eth ip address, which is generally 192.168.1 .*
You can also configure the Virtual Machine IP Address by yourself.
[Duli @] ifconfig eth0 192.168.1.123

B. Create an NFS directory. Assume It is/home/duli/nfs_root.
[Duli @] sudo mkdir/home/duli/nfs_root

C. Copy the content of the root file system directory of the Development Board to the NFS directory, and set the 777 permission. // assume that your utc100_root file is under the/home/duli/android2.3 directory.
[Duli @] sudo CP-r/home/duli/android2.3/utc100_root/*/home/duli/nfs_root
[Duli @] sudo chmod/home/duli/nfs_root 777

D. Configure the NFS Directory
Add the NFS directory and configure root read/write permissions, modify/etc/exports, and add content
/Home/duli/nfs_root 192.168.1. * (RW, sync, no_root_squash)

/*###################################### #########################*/

Step 2: first run the U-boot command line (usually press a key within a few seconds at startup)

Assume that you have reached the U-boot command line (which commands are available for U-boot? You can press help to display them)

A. Set the Development Board IP address, which must be the same network segment as the virtual machine.
U-boot # Set ipaddr 192.168.1.122

B. Set the IP address of the Development Board server.
U-boot # Set serverip 192.168.1.123

C. Check whether the IP and Server IP settings of the Development Board are normal.
U-boot # echo $ ipaddr
U-boot # echo $ serverip

D. Check whether the development board is connected to the server and ping the Host IP address. Is the result correct?
U-boot # Ping 192.168.1.123

E. Save the existing kernel startup parameters.
To be safe, save the previous startup parameters.
U-boot # echo $ bootargs
Copy and save the displayed items so that when the network cannot be started, you need to set the original Startup Mode
Set the original startup parameters as follows:
U-boot # setenv bootargs content copied above
U-boot # saveenv

F. Set kernel startup parameters (specify the key to network startup)
U-boot # setenv bootargs root =/dev/nfs RW nfsroot = 192.168.1.123:/home/duli/nfs_root init =/init IP = 192.168.1.122: 192.168.1.123: 192.168.1.1: 255.255.255.0: utc100: eth0: off console = ttysac0, 115200
Be sure to save the environment parameters
U-boot # saveenv

G. Check whether the network parameter settings are correct, that is, they are consistent with the settings above.
U-boot # echo $ bootargs

D. Restart the Development Board.

/*###################################### #########################*/

Step 3: Debug init. RC (the following operations require cyclic operations)

A. Modify init. RC step by step
B. Save it to the nfs_root directory.
C. Restart the Development Board to view the startup status and logs.
D. Modify init. RC for the log to repeat the above actions