[U-Boot] [PATCH v3 3/3] mpc5121: pdm360ng: add coprocessor POST

[Anatolij Gustschin <agust@denx.de>]

Hello Wolfgang,

On Wed, 14 Apr 2010 17:40:16 +0200
Wolfgang Denk <wd@denx.de> wrote:

> ...
> > --- a/post/tests.c
> > +++ b/post/tests.c
> > @@ -53,6 +53,7 @@ extern int gdc_post_test (int flags);
> >  extern int fpga_post_test (int flags);
> >  extern int lwmon5_watchdog_post_test(int flags);
> >  extern int sysmon1_post_test(int flags);
> > +extern int pdm360ng_coprocessor_post_test(int flags);
> >  
> >  extern int sysmon_init_f (void);
> >  
> > @@ -286,6 +287,18 @@ struct post_test post_list[] =
> >  #if CONFIG_POST & CONFIG_SYS_POST_BSPEC5
> >  	CONFIG_POST_BSPEC5,
> >  #endif
> > +#if CONFIG_POST & CONFIG_SYS_POST_COPROC
> > +    {
> > +	"Coprocessors communication test",
> > +	"coproc_com",
> > +	"This test checks communication with coprocessors.",
> > +	POST_RAM | POST_ALWAYS | POST_CRITICAL,
> > +	&pdm360ng_coprocessor_post_test,
> > +	NULL,
> > +	NULL,
> > +	CONFIG_SYS_POST_COPROC
> > +    }
> > +#endif
> >  };
> 
> I don't want to see board specific code (pdm360ng_*) in such a global
> file.  Please use a more generic approach.

What would be a preferred way to realize this? Defining a weak
function in post/post.c or post/tests.c which could be over-ridden
by board specific one? Like:

int __post_coprocessor_post_test(int flags)
{
        return 0;       
}
int coprocessor_post_test(int flags) 
        __attribute__((weak, alias("__post_coprocessor_post_test")));


Then I have to put board specific post code in board/pdm360ng/post.c
to the pdm360ng.c file back. Otherwise the board's
coprocessor_post_test() function is not linked if there is no other
code in this post.c file which is strongly-linked.

Anatolij