[U-Boot] [PATCH v5] Fix board init code to respect the C runtime environment

[Alexey Brodkin]

Hi Albert,

On Mon, 2015-11-16 at 17:22 +0100, Albert ARIBAUD wrote:
> board_init_f_mem() alters the C runtime environment's
> stack it is actually already using. This is not a valid
> behaviour within a C runtime environment.
> 
> Split board_init_f_mem into C functions which do not alter
> their own stack and always behave properly with respect to
> their C runtime environment.
> 
> Signed-off-by: Albert ARIBAUD <albert.u.boot at aribaud.net>
> ---
> Cc:ing custodians for all architectures which this
> patch affects.
> 
> This patch has been build-tested for all there
> architectures, and run-tested on ARM OpenRD Client.
> 
> For NIOS2, this patch contains all manual v1 and v2
> fixes by Thomas.
> 
> For x86, this patch contains all manual v2 fixes by Bin.
> 
> Changes in v5:
> - Reword commit message (including summary/subject)
> - Reword comments in ARC code
> 
> Changes in v4:
> - Add comments on reserving GD at the lowest location
> - Add comments on post-incrementing base for each "chunk"
> 
> Changes in v3:
> - Rebase after commit 9ac4fc82
> - Simplify malloc conditional as per commit 9ac4fc82
> - Fix NIOS2 return value register (r2, not r4)
> - Fix x86 subl argument inversion
> - Group allocations in a single function
> - Group initializations in a single function
> 
> Changes in v2:
> - Fix all checkpatch issues
> - Fix board_init_f_malloc prototype mismatch
> - Fix board_init_[f_]xxx typo in NIOS2
> - Fix aarch64 asm 'sub' syntax error
> 
>  arch/arc/lib/start.S            |  16 +++---
>  arch/arm/lib/crt0.S             |   6 ++-
>  arch/arm/lib/crt0_64.S          |   6 ++-
>  arch/microblaze/cpu/start.S     |   4 +-
>  arch/nios2/cpu/start.S          |  13 +++--
>  arch/powerpc/cpu/ppc4xx/start.S |  10 ++--
>  arch/x86/cpu/start.S            |   5 +-
>  arch/x86/lib/fsp/fsp_common.c   |   4 +-
>  common/init/board_init.c        | 108 +++++++++++++++++++++++++++++++++++-----
>  include/common.h                |  33 +++++-------
>  10 files changed, 146 insertions(+), 59 deletions(-)

Looks good to me now, thanks!

-Alexey