Cortex-M0 BPS creation

[Мороз Олег]

     Hello everyone. i'm new to  BSP development.  We have a project 
which is uses some kind of cortex-m0 microcontroller. As i understand 
it's armv6-m family. Is this CPU family is supported by rtems? I'm 
reading the book called "BSP and device driver development guide"  and 
it says look at "cpukit/score/cpu/CPU". This directory contains only 
armv7-m and armv4 files. Is it correct?