[U-Boot] axm SPL image too big

[Albert ARIBAUD <albert.u.boot@aribaud.net>]

Hello Heiko,

On Tue, 12 Jan 2016 11:48:17 +0100, Heiko Schocher <hs@denx.de> wrote:
> Hello Albert,
> 
> Am 12.01.2016 um 11:26 schrieb Albert ARIBAUD:
> > (cc:ing Heiko as the maintainer for axm/taurus)
> >
> > Hello,
> >
> > AXM is currently the only board failing 'buildman arm aarch64':
> >
> > +arm-unknown-linux-gnueabi-ld.bfd: SPL image too big
> > +make[2]: *** [spl/u-boot-spl] Error 1
> > +make[1]: *** [spl/u-boot-spl] Error 2
> > +make: *** [sub-make] Error 2
> >
> > Apparently SPL is already being built in Thumb instruction set, so no
> > way to gain anything that way.
> 
> I know, it was tricky to get SPL into 4k ...
> 
> > What else can we do to get SPL size back under limit?
> 
> Hmm.. what is your exact toolchain?

I tested with the buildman-fetched gcc, -v gives 'gcc version 4.9.0
(GCC)'.

I've deleted the toolchain and re-fetched it again through buildman in
case there was an issue with the install, and am getting the same
result.

I've also tested with the latest ARM gcc package available with Ubuntu,
that is, 'gcc version 5.2.1 20151010 (Ubuntu 5.2.1-22ubuntu1)', again
with the same result.

> I see for the axm board:
> 
> With eldk-5.4
> pollux:u-boot-smartweb hs [master] $ arm-linux-gnueabi-size u-boot
>     text    data     bss     dec     hex filename
>   212583   23792   23552  259927   3f757 u-boot
> pollux:u-boot-smartweb hs [master] $ arm-linux-gnueabi-size spl/u-boot-spl
>     text    data     bss     dec     hex filename
>    14568    1212    1140   16920    4218 spl/u-boot-spl
> pollux:u-boot-smartweb hs [master] $

Confirmed right now that with eldk 5.4's gcc 4.7.2 axm builds fine.

> With eldk-5.5
> pollux:u-boot-smartweb hs [master] $ arm-linux-gnueabi-size u-boot
>     text    data     bss     dec     hex filename
>   210690   23672   23556  257918   3ef7e u-boot
> pollux:u-boot-smartweb hs [master] $ arm-linux-gnueabi-size spl/u-boot-spl
>     text    data     bss     dec     hex filename
>    14472    1212    1140   16824    41b8 spl/u-boot-spl
> pollux:u-boot-smartweb hs [master] $

Confirmed right now that with eldk 5.5's (or 5.5.3's) gcc 4.8.1 axm
builds fine.

The issue appears with gcc 4.9 and 5.2.1 (and I suspect any version
between 4.9 and 5.2.1 and beyond 5.2.1)

> bye,
> Heiko
> -- 
> DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

Amicalement,
-- 
Albert.