How to read physical memory from daemon: during initrd stage of boot

[Vikas Aggarwal <vik.reck@xxxxxxxxx>]

Hi all,
  I need to read a 2-byte signature from 0-1MB  physical memory area  from a daemon on kernel 2.6.9 or beyond.
  Really blank about how to do it.  "mmap"  system call  is available but it can map using file descriptor.
  Is there a way to map physical memory (0-1MB) in user space?
Will appreciate if someone can please provide a sample code for how to
do it
  for kernel 2.6.9 from user-space.  
  BIOS puts up a  information in 0-1MB  area during the
boot, and i need to first scan a signature from a daemon which will
reside in initrd.

Any ideas will be very helpful.

thanks very much
-vikas aggarwal