[OpenBIOS] [PATCH 00/24] Implement load/init-program as per IEEE-1275 specification

[Programmingkid]

On Sep 5, 2016, at 6:01 PM, Mark Cave-Ayland wrote:

> The current implementation of load/init-program has some fairly big hacks in order
> to work around the fact that we don't have per-architecture CPU contexts. An
> example of this is chained bootloaders used for SPARC64 which use Forth to alter
> the saved CPU context so that control is returned to a different address by
> directly executing init-program before return.
> 
> With all architectures now able to save/restore CPU contexts, these hacks can now
> be removed and init-program changed to be a single per-architecture implementation
> along with some associated tidy-ups.
> 
> I've given this a fairly thorough testing across all my OpenBIOS test images and
> as far as I can tell doesn't cause any regressions.
> 
> Requires the previously posted SPARC32 and SPARC64 context patches to be applied
> first.
> 
> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland at ilande.co.uk>
> 
> Mark Cave-Ayland (24):
>  libopenbios: rename saved-program-state to load-state
>  libopenbios: introduce arch_init_program() in preparation for
>    per-arch implementations
>  all: create client program context once at startup
>  client.fs: add load-state param variable
>  amd64: introduce arch_init_program() implementation
>  ppc: introduce arch_init_program() implementation
>  SPARC32: introduce arch_init_program() implementation
>  SPARC64: introduce arch_init_program() implementation
>  x86: introduce arch_init_program() implementation
>  libopenbios: add context wrappers for Fcode/Forth payloads
>  SPARC32: move Forth/FCode over to use new context wrappers
>  SPARC64: move Forth/FCode over to use new context wrappers
>  x86: move Forth/FCode over to use new context wrappers
>  elf: set boot notes in elf_load() if supplied
>  SPARC64: remove start_client_image()
>  libopenbios: move prototypes for start_elf() and __context into
>    libopenbios
>  libopenbios: move go() function into libopenbios
>  aout: implement load/init-program as per IEEE-1275 specification
>  bootcode: implement load/init-program as per IEEE-1275 specification
>  elf: implement load/init-program as per IEEE-1275 specification
>  fcode: implement load/init-program as per IEEE-1275 specification
>  forth: implement load/init-program as per IEEE-1275 specification
>  libopenbios: remove conditional logic from go()
>  libopenbios: remove address parameter from start_elf()
> 
> arch/amd64/context.c                |   51 ++++++++++++++++++++-----
> arch/ppc/qemu/context.c             |   67 ++++++++++++++++++++++-----------
> arch/ppc/qemu/init.c                |   14 ++-----
> arch/sparc32/boot.c                 |   71 ++++-------------------------------
> arch/sparc32/boot.h                 |    6 +--
> arch/sparc32/context.c              |   39 +++++++++++++++----
> arch/sparc32/openbios.c             |    2 +-
> arch/sparc64/boot.c                 |   54 +-------------------------
> arch/sparc64/boot.h                 |    6 ---
> arch/sparc64/context.c              |   68 ++++++++++++++++++++-------------
> arch/sparc64/openbios.c             |    1 -
> arch/unix/boot.c                    |   13 +++++++
> arch/x86/boot.c                     |   53 +-------------------------
> arch/x86/boot.h                     |    6 +--
> arch/x86/context.c                  |   52 ++++++++++++++++++++-----
> arch/x86/openbios.c                 |    1 -
> forth/debugging/client.fs           |   30 ++++++++-------
> include/libopenbios/bootcode_load.h |    2 +
> include/libopenbios/initprogram.h   |    9 +++++
> libopenbios/aout_load.c             |   48 +++++++++++------------
> libopenbios/bootcode_load.c         |   33 +++++++++++++---
> libopenbios/elf_load.c              |   28 +++++++-------
> libopenbios/fcode_load.c            |   32 ++++++----------
> libopenbios/forth_load.c            |   30 +++++++--------
> libopenbios/init.c                  |    3 ++
> libopenbios/initprogram.c           |   45 ++++++++++++++++++++++
> libopenbios/load.c                  |   47 ++++++++---------------
> libopenbios/xcoff_load.c            |    8 ++--
> 28 files changed, 417 insertions(+), 402 deletions(-)
> 
> -- 
> 1.7.10.4
> 
> 
> -- 
> OpenBIOS                 http://openbios.org/
> Mailinglist:  http://lists.openbios.org/mailman/listinfo
> Free your System - May the Forth be with you

That is an impressive amount of work done. Would you have a repo that someone could clone in order to test out your patches?