[U-Boot-Custodians] SPL / TPL

[Masahiro Yamada]

On Thu, Oct 10, 2019 at 10:23 AM Kever Yang <kever.yang at rock-chips.com> wrote:
>
> Add Philipp,
> Hi Philipp,
>
>      Did you remember the discussion thread about the order of SPL/TPL?



This discussion started from this patch:
https://patchwork.ozlabs.org/patch/662396/

It happened before the rockchip stuff.



>
>
> Thanks,
> - Kever
> On 2019/10/9 下午4:42, Bin Meng wrote:
> > Hi Wolfgang,
> >
> > On Wed, Oct 9, 2019 at 3:13 PM Wolfgang Denk <wd at denx.de> wrote:
> >> Dear Bin Meng,
> >>
> >> In message <CAEUhbmXWa1nTa4ddbubBi6sZ8a1LrLgeTSCt2O9c+oKhqpP2Ng at mail.gmail.com> you wrote:
> >>> It looks to me that we never get in agreement as we have the document
> >>> README.TPL describes one boot flow and some other platforms implement
> >>> another way.
> >> I'm sorry, but such a statement simply makes no sense.  The SPL
> >> (2nd) will always preceede the TPL (3rd) in all systems.
> >>
> > What you described here is what Masahiro said when TPL was first
> > introduced to U-Boot:
> >
> > "SPL is a short of Secondary Program Loader, and TPL was Tertiary
> > Program Loader."
> >
> > This was indicated by README.TPL and the presentation that Kever mentioned.
> >
> >> The actual content and functionality may be different, but this
> >> is a totally different topic, and should not be attached to the
> >> names.
> >>
> > I also thought TPL is 3rd program loader, but some platforms (as
> > pointed out in this email thread) use TPL as the 1st stage program
> > loader proceeding SPL, and in fact changed its meaning to Tiny Program
> > Loader.
> >
> > Indeed people are not in agreement. That's why I sent this email
> > asking for some clarification :)
> >
> > Apparently there are 2 distinct implementation about TPL in U-Boot
> > today. So what should we do next?
> >
> > Regards,
> > Bin
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>
>
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-- 
Best Regards
Masahiro Yamada