[U-Boot] Adding new U-Boot Command.

[Tuma]

Thank you, Detlev!
I've successfully added new command to U-Boot.
All fine.

On Wednesday 23 September 2009 11:44:25 you wrote:
> Hi, Detlev!
>
> Okay, I want to add some not board specific command - just some new
> functional. So I should put it in "/common".
>
> Yes, I've studied the structure of cmv_-file, and here is my code:
>
> ------------------------------------------------
>
> /*
>  *  (C) Copyright 2009
>  */
>
> #include <command.h>
>
> int PrintSerialNo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
> {
>     // Do something here
>     return 0;
> }
>
> U_BOOT_CMD(printsn, 1, 0, PrintSerialNo, "Print Serial Number", "Long
> Help");
>
> ------------------------------------------------
>
> The file is named cmd_sn.c and have been put in /common.
>
> Now I'm not very skilled in make system. So can you help me please in
> adding new .c file in final u-boot image?
> For example I need to include my new file unconditionally.
> I should edit Makefile in /common?
> What should be changed in this file?
>
> On Tuesday 22 September 2009 13:52:52 you wrote:
> > Hi Tuma,
> >
> > > Help me please in writting new U-Boot commands.
> > > What should I do? I should write new file in "/common", something like
> > > cmd_****, am I right?
> >
> > This really depends if you want to implement a command which is useful
> > for all boards, then it should be below common/ or if it is special to
> > one board.  Then it should go into the board directory.
> >
> > > So where can I read about cmd_-file structure and how should new
> > > commands be added?
> >
> > You have all the source to study.  Look into how other people do it.
> > Search the history for commits adding new commands and study them.  For
> > example this commit[1] adds new commands to an already existing file,
> > but it is a start.
> >
> > > And how can I add my new file to U-Boot binary?
> >
> > Make sure it is mentioned in the relevant Makefile.
> >
> > Cheers
> >   Detlev
> >
> > PS: Is the LCD display working now?
>
> No, it still does not. Work in progress.
>
> > [1]
> > http://git.denx.de/?p=u-boot.git;a=commitdiff;h=02c9aa1d41f73fdcf8383a36c
> >c0 cbbfaf952855d



-- 
Software Developer
General Satellite Corp.