On Sat, Jan 24, 2009 at 08:50:40AM +0100, Sven Luther wrote: [...] > You need to write a kernel driver for it, which should not be too > difficult. > > > Hints for anyone wanting to do that : > > 1) the processor specs for the powerpc cpus are usually available, at > least the freescale ones. The G3 being a IBM part, you should look for > it in the IBM website or google for it. > > 2) LDD3 (Linux Driver Development, release 3 if my memory is good) > explains how to do a sysfs driver, or take example on an existing one, > it is rather simple, you need to write the module init/deinit > function, a structure which holds the sysfs ops, and you probably only > want the read and write function. > > 3) in the write function, you access the register and put a value to > it, in the read function, you get the value of the register. This may > need to be dfone in assembly, but the powerpc assembly reference > manual is available (from freescale and probably from ibm too). Or > simply copy the code for other registers. > > Once you have that, you can play with it and write some userland tool. Thanks for giving this info, but using and actually write a kernel module is beyond my capabilities (and time available to get the particular computing task done). > Please forward this message to the list, since i am being censored. Done. -- Hans Ekbrand (http://sociologi.cjb.net) <hans@sociologi.cjb.net>
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