[U-Boot] Want to study U-Boot code

[Woody Wu]

在 2013-1-25 PM7:35，"Marek Vasut" <marex at denx.de>写道：
>
> Dear Woody Wu,
>
> > On Fri, Jan 25, 2013 at 12:30:43AM +0100, Marek Vasut wrote:
> > > Dear Woody Wu,
> > >
> > > > Hi, List
> > > >
> > > > Is there a book or web document to help start to understand how
U-Boot
> > > > works?
> > >
> > > There's a doc/ directory in the u-boot sourcecode.
> >
> > Is there a guide/suggestion to the reading order of these docs? You
> > know, there is not a index file. Thanks.
>
> The question is -- what do you want to do? If "Study u-boot code" is the
answer,
> just dive in ;-)
>
> Best regards,
> Marek Vasut

I want to firstly get a picture to basically understand how u-boot work,
especially on an ARM9 based board. I think not everyone who want to
understand u-boot has to read the full code.  Thank.