[U-Boot] how does one "extend" the list of POST tests?

[Robert P. J. Day]

On Tue, 29 Mar 2016, Robert P. J. Day wrote:

>   one more question, i think, on the framework of u-boot POST tests.
> the README.POST file states:
>
>    o) Extensibility
>
>       The framework shall allow adding/removing/replacing POST tests.
>       Also, standalone POST tests shall be supported.
>
> how many different ways are there to extend the list of POST tests?
>
>   given that post/tests.c defines the list of tests statically, you
> clearly can't *dynamically* add tests. i do see that that list of
> tests includes the generic tests:
>
> #if CONFIG_POST & CONFIG_SYS_POST_BSPEC1
>         CONFIG_POST_BSPEC1,
> #endif
> #if CONFIG_POST & CONFIG_SYS_POST_BSPEC2
>         CONFIG_POST_BSPEC2,
> #endif
> #if CONFIG_POST & CONFIG_SYS_POST_BSPEC3
>         CONFIG_POST_BSPEC3,
> #endif
> #if CONFIG_POST & CONFIG_SYS_POST_BSPEC4
>         CONFIG_POST_BSPEC4,
> #endif
> #if CONFIG_POST & CONFIG_SYS_POST_BSPEC5
>         CONFIG_POST_BSPEC5,
> #endif
>
> so, sure, one can take advantage of any of those five available test
> slots, but that's not really a general solution.
>
>   so other than editing post/tests.c and manually adding more tests,
> is there any other mechanism for adding POST tests?

  whoops, i just noticed the ability to add tests through the
environment in post/post.c:

#ifndef CONFIG_POST_SKIP_ENV_FLAGS
static void post_get_env_flags(int *test_flags)
{
        int  flag[] = {  POST_POWERON,   POST_NORMAL,   POST_SLOWTEST,
                         POST_CRITICAL };
        char *var[] = { "post_poweron", "post_normal", "post_slowtest",
                        "post_critical" };

as i read it, that still limits one to selecting tests already
implemented, but it's still an increase in flexibility. will keep
reading ...

rday

p.s.  once i nail all this down, i plan on submitting a few more
patches, and writing this up for public consumption on my wiki.

p.p.s. if anyone has a board-specific implementation of some POST
tests they want to share, i can use all the examples i can get.

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
LinkedIn:                               http://ca.linkedin.com/in/rpjday
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