Install OS using PXE Boot

Is it possible to automate installation on VIM 3 using PXE? i saw tftp installation but it requires to access using serial , is there anyway to access kbi remotely or without any key press during startup?

im planning a demo project to auto install os from remote pc

yes ! i have test it already! yes is possible to start OS and automate it!
uboot PXE DHCP TFTP - works fine! but u need install proper uboot + uboot env before!!!

PS: VIM2 VIM3 - have spi flash - which can help bootup process make more flexible !!!