[RESEND PATCH v3 5/7] board: Add a gd flag for chain loading

[Simon Glass <sjg@chromium.org>]

Hi Bin,

On Thu, 23 Apr 2020 at 08:00, Bin Meng <bmeng.cn@gmail.com> wrote:
>
> Hi Simon,
>
>
> On Thu, Apr 23, 2020 at 7:03 PM Bin Meng <bmeng.cn@gmail.com> wrote:
> >
> > Hi Simon,
> >
> > On Thu, Apr 9, 2020 at 2:58 AM Simon Glass <sjg@chromium.org> wrote:
> > >
> > > When U-Boot is run from another boot loader, much of the low-level init
> > > needs to be skipped.
> > >
> > > Add a flag for this and adjust ll_boot_init() to use it.
> > >
> > > Signed-off-by: Simon Glass <sjg@chromium.org>
> > > ---
> > >
> > > Changes in v3:
> > > - Add a new patch with a gd flag for chain loading
> > >
> > > Changes in v2: None
> > >
> > >  include/asm-generic/global_data.h | 1 +
> > >  include/init.h                    | 2 +-
> > >  2 files changed, 2 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h
> > > index 5d027329fe0..3dc51e49ef7 100644
> > > --- a/include/asm-generic/global_data.h
> > > +++ b/include/asm-generic/global_data.h
> > > @@ -166,5 +166,6 @@ typedef struct global_data {
> > >  #define GD_FLG_SPL_EARLY_INIT  0x04000 /* Early SPL init is done          */
> > >  #define GD_FLG_LOG_READY       0x08000 /* Log system is ready for use     */
> > >  #define GD_FLG_WDT_READY       0x10000 /* Watchdog is ready for use       */
> > > +#define GD_FLG_NO_LL_INIT      0x20000 /* Don't perform low-level init    */
> >
> > How about GD_FLG_SKIP_LL_INIT ?
>
> Just noticed that there is an ad-hoc config macro (not converted to
> Kconfig yet) CONFIG_SKIP_LOWLEVEL_INIT.

OK

>
> I suspect we can do some clean up and consolidation here ?

Yes this is quite similar. I agree some clean-up could be done here.
But that option has many build-time effects. I suspect it would be
possible to remove those and do it all at runtime, but it would be a
fair bit of work to do it for all these boards.

[..]

Regards,
Simon