[PATCH 13/14] Update u-boot.cfg to include CFG also

[Simon Glass]

Hi Tom,

On Wed, 26 Jun 2024 at 15:07, Tom Rini <trini at konsulko.com> wrote:
>
> On Wed, Jun 26, 2024 at 09:00:41AM +0100, Simon Glass wrote:
> > Hi Tom,
> >
> > On Tue, 25 Jun 2024 at 15:14, Tom Rini <trini at konsulko.com> wrote:
> > >
> > > On Tue, Jun 25, 2024 at 01:38:04PM +0100, Simon Glass wrote:
> > > > Hi Tom,
> > > >
> > > > On Mon, 24 Jun 2024 at 19:29, Tom Rini <trini at konsulko.com> wrote:
> > > > >
> > > > > On Sun, Jun 23, 2024 at 02:30:32PM -0600, Simon Glass wrote:
> > > > >
> > > > > > Some configuration is now in variables with a CFG_ prefix. Add these to
> > > > > > the .cfg file so that we can see everything in one place. Sort the
> > > > > > options so they are easier to find and compare.
> > > > > >
> > > > > > Signed-off-by: Simon Glass <sjg at chromium.org>
> > > > > > ---
> > > > > >
> > > > > > Changes in v2:
> > > > > > - Add new patch to update u-boot.cfg with CFG_... options
> > > > > >
> > > > > >  scripts/Makefile.autoconf | 2 +-
> > > > > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > > > >
> > > > > > diff --git a/scripts/Makefile.autoconf b/scripts/Makefile.autoconf
> > > > > > index b42f9b525fe..65ff11ea508 100644
> > > > > > --- a/scripts/Makefile.autoconf
> > > > > > +++ b/scripts/Makefile.autoconf
> > > > > > @@ -71,7 +71,7 @@ quiet_cmd_autoconf = GEN     $@
> > > > > >  quiet_cmd_u_boot_cfg = CFG     $@
> > > > > >        cmd_u_boot_cfg = \
> > > > > >       $(CPP) $(c_flags) $2 -DDO_DEPS_ONLY -dM include/config.h > $@.tmp && { \
> > > > > > -             grep 'define CONFIG_' $@.tmp | \
> > > > > > +             egrep 'define (CONFIG_|CFG_)' $@.tmp | sort | \
> > > > > >                       sed '/define CONFIG_IS_ENABLED(/d;/define CONFIG_IF_ENABLED_INT(/d;/define CONFIG_VAL(/d;' > $@; \
> > > > > >               rm $@.tmp;                                              \
> > > > > >       } || {                                                          \
> > > > >
> > > > > I don't like this because whereas "CONFIG_" is enforced to be set only
> > > > > by Kconfig and so always all reliably set and found via a single header,
> > > > > CFG_ stuff is not.
> > > >
> > > > OK, so how are CFG_ options found? I hit this when trying to find the
> > > > SDRAM size on rockchip 3399 and I could not find any way of figuring
> > > > it out.
> > >
> > > It's just another define, there's no uniformity to it. For some of the
> > > SDRAM values really we need some build time way to grab some information
> > > out of the default device tree.
> >
> > Can you give an example of a board that could use this? I looked at
> > the devicetree for chromebook_kevin and don't see a memory range in
> > ther.
>
> OK, wow, I didn't realize /memory was optional now. But indeed, I don't
> see it in the dtb file. That removes that option then, sadly.

Well, we can still require it, so long as an error is produced if the
property is needed but does not exist.

Regards,
Simon