newbie question: kexec linux-based bootstrap

[Bizhan Gholikhamseh (bgholikh)]

> On IA using kexec-tools 2.0.0, use a command like this to load the
kernel:
> 
>     kexec -l bzImage --initrd=initrd.img
--command-line="kernel-cmd-args"
> 
> where
> 	bzImage is the kernel's bzImage file
> 	initrd.img is the initrd image file
> 	kernel-cmd-args are the kernel's command line args
> 
> Then, boot the kernel with:
> 
>     kexec -e

We are using ramdisk instead of initrd, do you know what arguments I
need to pass to point to the ramdisk install on a partition on SATA
disk: e.g /dev/sda2?

 Bizhan