Executing a new u-boot image from existing u-boot prompt

Hi friends,

    Sorry blogging after long time.

    I recently got a question on how to bring an u-boot image to RAM temporarily for testing and debugging purpose instead of burning it every time to flash or eeprom after making small changes. I couldn't respond to that one on time, my apologies. So here's how we could do it.

Understanding UBoot Environment Variables

The following is the snapshot of standard U-Boot Environment Variables. 

Expanding Guest OS VmWare Disk Size

The following steps are for VmWare Player and guest OS as Ubuntu 10.04 (Lucid Lynx).

Autologin in Linux

Autologin on boot up will be useful when you want to execute some application or program on boot up and you call some scripts or terminal commands from within that program.

killing a process dynamically

Many a times there arises a need to kill a processes without actually being able to type ps on the terminal and look for the process id to give it to kill.

make: warning: Clock skew detected. Your build may be incomplete.

You may get warning of this type when:

    1)  You try to build after moving your data from one machine to another.

    2)  You try to build after restarting any old machine.

Configuring Network Interface-Ubuntu VmWare

Many users using a Virtual Player might often (rather most of the times) require to configure a network interface in the VmWare. The most common requirements for such an interface are

/bin/sh: Illegal option -h

Many a times, while running some scripts one cat get errors like "/bin/sh: Illegal option -h".

One of the reasons for this can be

ENABLING LOW LEVEL KERNEL DEBUGGING AND USING EARLY PRINTKs

In this post I am going to show how to enable low level kernel debugging option and how to enable 'printks' to get prints during boot up also.