Working rootfs to load host file system from RAM

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Has anyone got a working rootfs that I can boot from directly on the ARM Fast Model simulator? I'm not talking about one for the guest but one for the host.

I can properly boot the system in the simulator from NFS, but when I try to build an initramfs from my NFS filesystem and attach that to the simulator with --initrd xxx then the kernel seems to hang after having extracted the initramfs and then freed the memory - it stops doing anything after saying "Freeing init memory".

I have created the initramfs by just doing a

find ./ | cpio -o -H newc | gzip > ./initrd.cpio.gz

in the directory which is my NFS filesystem. Isn't that sufficient?

Btw I have also tried to build the initramfs into the kernel by configuring CONFIG_INITRAMFS_SOURCE=xxx - however, then what happened is that when the system booted it only said "error uncompressing kernel" right at the start.

Thanks
Jess
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