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[v2,0/2] sunxi: Fix boot of Cubietruk and al.

Message ID 20171019140419.30996-1-maxime.ripard@free-electrons.com
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Series sunxi: Fix boot of Cubietruk and al. | expand

Message

Maxime Ripard Oct. 19, 2017, 2:04 p.m. UTC 
Hi

Most featureful boards, such as the Cubietruck, have been broken since
the release 2017.09 (the two variants of the Olinuxino-Lime2 and the
cubietruck at least, possibly more since then).

This is due to a size increase of the binary that will trip us across
the size we've been using in our default configuration since forever,
and widely distributed through the u-boot-sunxi-with-spl.bin file.

We would have several ways to work around it. The first one would be
to just increase the offset of the environment. However, since it
would break all the environments of our users and possibly the custom
partition scheme that they would have created, it doesn't really seem
like a smart move.

The second one would be to move the environment to a filesystem file,
which would also break all the existing users. This can be envisionned
as a long term fix though.

Another one would be to start trimming down a bit our enabled options
in order to reduce the size and to gain some extra space for users
customisations. However, this will always result in pointless and
endless discussions, so let's move away from that.

The final one that has been implemented would be to just build U-Boot
using thumb2 to push back the issue until hopefully I'm no longer
maintainer or the switch to the env filesystem would have been done.

I've also added a patch to make sure that the compilation breaks and
that we can notice.

Maxime


Maxime Ripard (2):
  sunxi: binman: Add U-Boot binary size check
  sunxi: Enable THUMB build for the U-Boot binary

 arch/arm/Kconfig               |  1 +
 arch/arm/dts/sunxi-u-boot.dtsi | 11 +++++++++++
 2 files changed, 12 insertions(+)

Comments

Andre Przywara Oct. 19, 2017, 10:11 p.m. UTC | #1 
Hi Maxime,

On 19/10/17 15:04, Maxime Ripard wrote:

....

> The final one that has been implemented would be to just build U-Boot
> using thumb2 to push back the issue until hopefully I'm no longer
> maintainer or the switch to the env filesystem would have been done.
> 
> I've also added a patch to make sure that the compilation breaks and
> that we can notice.

Can you please swap the patches? So that we get the fix before we break
the build? This looks better in bisecting and buildman.

Cheers,
Andre.

> 
> Maxime
> 
> 
> Maxime Ripard (2):
>   sunxi: binman: Add U-Boot binary size check
>   sunxi: Enable THUMB build for the U-Boot binary
> 
>  arch/arm/Kconfig               |  1 +
>  arch/arm/dts/sunxi-u-boot.dtsi | 11 +++++++++++
>  2 files changed, 12 insertions(+)
>