Re: [PATCH 1/9] dt: Handle passed/built-in DT selection in early_init_dt_scan()

From: Grant Likely
Date: Wed Nov 27 2013 - 10:36:03 EST


On Thu, 21 Nov 2013 18:42:58 +0100, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
> On Thu, Nov 21, 2013 at 6:38 PM, Rob Herring <robherring2@xxxxxxxxx> wrote:
> > I really don't like saying one arch can have built-in dtb and another
> > one can't. Either we allow it or we don't. If this is a bad feature,
> > then why did we let multiple arches implement it.
>
> ... and did we put it in asm-generic, so now _every_ arch has __dtb_start.
>
> Gr{oetje,eeting}s,

Some platforms need it because they either don't have bootloader
support, they couldn't change the boot interface, or they don't have a
bootwrapper they can put it in. I'd rather have it in common code than a
different implementation on each architecture.

For the copy flag, it would be fine to put an "if (IS_CONFIGURED())"
test around the copy block so that it never happens on some
architectures.

g.

>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds

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