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I am developing an embedded system that will boot from flash.
I would like to load a RAM based file system to physical memory
and then have the kernel mount the RAM disk as the Root
This is fairly straight forward using "initrd" because normal kernel
functions can accomplish it. I would like to skip loading initrd and go
right to the final RAM disk if this is possible.
Our boot process is to:
1.) Load the kernel
2.) Load the RAM disk/Root file system
3.) Mount the RAM disk as the Root file system within the kernel
How can I hard code the kernel to know where the RAM disk will
exist in physical memory? We do not have JTAG or any other means
to create the file system on the target platform prior to saving the
system to Flash.