[Yaffs] how to use yaffs2 simulator in redhat?

I want to try yaffs with its emulator in /linux_tests . I ran the
initnandsim successfully ,but when I try to run mkfiles ,it shows that ”
cat /proc/yaffs_states:not exists the file or dir” ,and when I run
mount_cycling.sh,it shows that ” mount :unknown filesystem ‘yaffs2’ ”.

Could anyone help me ? and is there any simulator available?





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Regards,

Ezio