Question: I just to want to know the flow of activities happening after loading the linux kernel image into the RAM after boot process.

Answer: 
* Kernel takes in the control of the
system H/W as soon as you see
"Uncompressing Linux..".
* Kernel checks and sets the the BIOS
registers of graphics cards and the
screen output format.
* Kernel then reads BIOS settings, and
initializes basic hardware
interfaces.
* Next the drivers in the kernel
initialize the hardware.
* Then the Kernel check for the
partitons
* Then it mounts the root file system
* Then the kernel starts init, which
boots the main system with all its
programs and configurations.
The boot loader jumps to the image entry point passing kernel command line (if any), and the kernel handles the rest.