sysctl support for ICTC

[Adrian Cox]

Michel Lanners wrote:

> Ah, temp registers. That's good, since IIRC there were a few atempts
> long ago in this place to add temperature monitoring, but none ever
> ended up with something useful. Finally, that 0 in the cpuinfo could be
> replaced with something meaningful ;-)

Motorola have recently revealed that you cannot enable both thermal and
decrementer interrupts simultaneously. In typical Motorola fashion, they
have published this hidden inside the manual for the 755, with a note
that it also applies to the 750.

I've posted patches for the temperature measurement a few times - all
you have to do is to use the correct bit numberings, rather than the
wrong ones that linger in the kernel headers like a bad cheese.

- Adrian Cox, AG Electronics

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