Not booting RAM file system embedded in Linux Kernel

Question

We have a Linux embedded system that we would like to boot from Flash file system, but have a RAMFS embedded into the kernel that can be seen by the kernel after boot.

Is it possible to embed a RAM File system inside the Linux Kernel (v3.3), that can be used after kernel boot, that the kernel does not use for booting?

Thanks.

Answer 1

Absolutely! Just make a script which mounts a tmpfs on your preferred mount point and that extracts in it a tarball that has been bundled in you rootfs.