[U-Boot] [PATCH v3 0/6] Optimize ARM relocation

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

On Tue, 11 Jun 2013 14:17:29 +0200, Albert ARIBAUD
<albert.u.boot@aribaud.net> wrote:

> This series optimizes relocation by ensuring ARM
> binaries only use one type of relocation record,
> R_ARM_RELATIVE., then optimizing relocation code
> accordingly.
> 
> 1. A Makefile rule is added that checks that no
> other relocation record types are generated except
> R_ARM_RELATIVE; build fails if this is the case.
> 
> 2. All references to dymsym are removed, as this
> table is not used for R_ARM_RELATIVE relocations.
> 
> 3. arch/arm/lib/bss.c is replaced by a more generic
> arch/arm/lib/sections.c where all section symbols will
> be defined.
> 
> 4. __image_copy_start and __image_copy_end symbols
> are moved from linker scripts to arch/arm/lib/sections.c
> 
> 5. __rel_dyn_start and __rel_dyn_end are moved from
> linker scripts into arch/arm/lib/sections.c
> 
> 6. relocate_code is optimized based on the fact that
> symbol references are now always valid even before
> relcation, and that only R_ARM_RELATIVE relocations
> will be met.
> 
> Changes in v3:
> - fix commit message typo (of -> if)
> - fix commit message typo (breaks -> break)
> 
> Changes in v2:
> - use $< instead of $(obj)u-boot
> - new in V2: remove all dynsym references
> - various comment fixes
> 
> Albert ARIBAUD (6):
>   arm: ensure u-boot only uses relative relocations
>   remove all references to .dynsym
>   arm: generalize lib/bss.c into lib/sections.c
>   arm: make __image_copy_{start,end} compiler-generated
>   arm: make __rel_dyn_{start,end} compiler-generated
>   arm: optimize relocate_code routine
> 
>  Makefile                                       |    7 +++
>  arch/arm/config.mk                             |    5 ++
>  arch/arm/cpu/arm920t/ep93xx/u-boot.lds         |    6 ++-
>  arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds      |    5 --
>  arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds    |    5 --
>  arch/arm/cpu/ixp/u-boot.lds                    |   20 +++++---
>  arch/arm/cpu/u-boot-spl.lds                    |    6 +--
>  arch/arm/cpu/u-boot.lds                        |   21 +++++---
>  arch/arm/lib/Makefile                          |    2 +-
>  arch/arm/lib/relocate.S                        |   61 ++++++------------------
>  arch/arm/lib/{bss.c => sections.c}             |    8 +++-
>  board/actux1/u-boot.lds                        |   20 +++++---
>  board/actux2/u-boot.lds                        |   20 +++++---
>  board/actux3/u-boot.lds                        |   20 +++++---
>  board/ait/cam_enc_4xx/u-boot-spl.lds           |    5 --
>  board/davinci/da8xxevm/u-boot-spl-da850evm.lds |    5 --
>  board/davinci/da8xxevm/u-boot-spl-hawk.lds     |    1 -
>  board/dvlhost/u-boot.lds                       |   20 +++++---
>  board/freescale/mx31ads/u-boot.lds             |   20 +++++---
>  board/vpac270/u-boot-spl.lds                   |    6 +--
>  include/asm-generic/sections.h                 |    3 --
>  21 files changed, 139 insertions(+), 127 deletions(-)
>  rename arch/arm/lib/{bss.c => sections.c} (79%)
> 

Applied to u-boot-arm/master.

Amicalement,
-- 
Albert.