[PATCH 2/3] powerpc: Add early debugging / xmon support for Cell

[Michael Ellerman]

On Tue, 2006-05-02 at 19:54 +1000, Michael Ellerman wrote:
> This patch adds udbg routines for cell, and hooks them up for use as an early
> debugging console or for xmon.
> 
> With this patch xmon seems to work. On one occasion after sitting in xmon
> for a while I lost hard disk interrupts and had to power off, not sure what
> the story was there.
> 
> Signed-off-by: Michael Ellerman <michael at ellerman.id.au>

This patch is no good, it allows you to inadvertently call rtas before
it's ready which causes the kernel to die. I think we can structure
things so that a) rtas is callable earlier, and b) rtas_call fails
gracefully when rtas isn't setup yet.

The BML guys now use these rtas calls too, so I'll do a version under
kernel/ so they can use it too.

New patch RSN.

cheers

-- 
Michael Ellerman
IBM OzLabs

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person
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