[U-Boot] [PATCH 0/6] Adjust command macros to allow smaller U-Boot size

[Simon Glass]

Hi Tom,

On 31 March 2014 12:30, Tom Rini <trini at ti.com> wrote:

> On Mon, Mar 24, 2014 at 09:51:05AM -0600, Simon Glass wrote:
>
> > A large chunk of U-Boot's executable size is the code to process and
> > execute commands. This is reasonable, since commands and scripts are
> > an important part of U-Boot's feature set and provide much of its
> > flexibility.
> >
> > However, for some applications only a very limited set of commands is
> > required. Where image size is important, it is desirable to be able to
> > easily remove unwanted code.
> >
> > This series introduces a new board_run_command() function which can
> > be used to run a small subset of commands as required by the board
> > (typically load and bootm), thus allowing the rest of the commands
> > to be automatically and reliably dropped from the image using toolchain
> > dead code elimination.
>
> This is an interesting concept certainly.  Can you also provide a
> non-trivial example here?
>

I have a very non-trivial example which is a lot of code, and calls things
like the SPI layer and do_bootm(). That might be more than you want.

Would it help if I wrote a simple FDT-based boot to a kernel in a function?

Regards,
Simon