[U-Boot] [PATCH 2/2][v2] Add readme of how to boot from espi flash for p4080ds.

[Detlev Zundel <dzu@denx.de>]

Hi Kumar,

>>> Creating an RCW from scratch is more complicated, which is why we
>>> have that javascript tool -- though we could provide some example RCWs
>>> for common configs.
>> 
>> Just for my information - it sounds like the RCW is really complex.  If
>> RCW still expands to "reset control word", I would expect it to be 32
>> bits though.  It is rather common for U-Boot porters to determine 32-bit
>> values for specific registers without using a javascript tool, so maybe
>> I'm wrong here.
>
> On P4080 (and future devices) it is 512 bits of data so not as trivial
> as our older parts that used a simple 32-bit RCW.

Ah I see.  So rather than being a _word_ it's more like a reset control
_story_ :)

Thanks
  Detlev

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