[U-Boot-Users] Device chaining, anyone interested?

Detlev Zundel dzu at denx.de
Thu Aug 21 17:01:55 CEST 2003

Hello Richard,

> We are in the process of putting together some POST/diagnostic type
> code for our OMAP u-boot board. 

If you are doing work on POST stuff, I hope that you are aware of the
POST framework which is used only on the PowerPC branch right now.
It'll be great if any effort in this direction could be merged under
this framework.

> We have modified the device lists for input/output such that it will
> chain to several devices.... ex: can input data at a serial keyboard
> OR at the keypad OR at the touchscreen and it will output to the
> serial console AND the LCD console (and potentially a USB-client
> serial console).  This is all very handy for what we are doing, but
> I'm not sure if its something which the generic u-boot code wants
> (Wolfgang?).  Its been put together with the standard list functions
> and such so its not a great departure in code.

I cannot speak for Wolfgang, who is on holidays by the way, but in my
opinion it is a worthwhile effort.  What comes to my mind immediately
is to chain some output device the user can see and the logbuffer
device which is available under Linux after the kernel has taken
control.  So please go ahead and post the patches here.


Emacs is the way to purify your soul using garbage collection.

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