[U-Boot] [POST] retrieving the results in Linux ?

[Wolfgang Denk]

Dear Albert,

In message <4E15DCD4.7000608 at aribaud.net> you wrote:
> 
> > The plan is to share the log buffer, in both directions: Linux can
> > read the POST results, and U-Boot can read the last Linux messages
> > after a crash / reboot.  Actually, after a reboot you can read the
> > last messages from the _previously_ running kernel in Linux, too
> > (assuming there are no wraparounds, of course).
> 
> Even with wraparounds, you could still be able to read the last
> messages; only overwrites would prevent it.

Well, what I meant was: when the new kernel produces enough boot
messages to cause a wrap-around of the log buffer, then all traces of
the previous kernel's messages will be lost.

Best regards,

Wolfgang Denk

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