Re: [linuxsh-dev] Some modifications to the kernel in the CVS

[Mitch D. <mj...@au...>]

NIIBE Yutaka wrote:
> 
> Mitch Davis wrote:
>  > I am currently holding onto some work which puts the 7707 in
>  > a CONFIG class of its own.
> 
> My concern is that if it's almost same (with 7709) in terms of
> peripherals, it would be good _not_ to have CONFIG class of its own.
> Instead, make the class of 7707/7709/7709A/7729, and when needed (and
> possible), distingush on runtime.

You can find the datasheet for the 7707 here:

  http://semiconductor.hitachi.com/products/product_abstract.cfm?p_id=178

From a configuration point of view, it would be nice to offer
the chance to compile in drivers for the 7707 on-chip peripherals
only if they're compiling for a 7707.  Otherwise people who don't
use the 7707 will be drowned in options they can't use.

> Further, if there's good way to fixup the code on runtime, we don't
> need to CONFIG class of CPU on compile time, provided it won't
> complicate the code much.

The 7707 core is the same (I believe) as the 7709.  It won't
make a difference at runtime.  Unlike the other members of the
77[01]x family, I believe you could make a kernel that runs the
same on both.

Regards,

Mitch.
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