Re: [linuxsh-dev] Back from the dead

[Stuart M. <Stu...@st...>]

Folks

> I think that we should support I/O for "unknown" (bare) machine.
> Currently, there's no I/O support for "unknown" board.  This is kind
> of backward.

I'm not sure. My thinking was that for a really unknown machine (i.e.
one which is not yet specifically supported) because you don't know
where any off-chip peripherials are it was better to not attempt any
I/O at all....

> I'm thinking adding BIOS call to get I/O offset and interface type
> and such.

...however if we can pass extra information into the kernel (BIOS
and/or command line), then it makes sense to support it.

[Time passes, several attempts to put what I'm thinking into words fail.]

Its easier to do it than try and explain it. See what you think about
the attached patches.

The sh_mv command line option now takes two parameters, the I/O base
address, and whether to enable memory mapped I/O. For example:
  sh_mv=unknown,0xa8000000,1

Stuart