common: elf: add elf_open, elf_close and elf_load ...

In order to integrate elf loading into bootm command, split elf opening
from elf loading.

Signed-off-by: Clement Leger <cleger@kalray.eu>
Tested-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

common: elf: load elf directly from file ...

Currently, elf file must be loaded into a buffer and then passed to
elf_load_image. This requires to copy the whole elf file before booting
it. This commit allows to pass the filename directly and will allocate
data only for the elf header (elf header + program headers). This will
then be used to load the elf data from the file without copying it in an
intermediate buffer. Elf segments are first parsed into a list and are
then loaded from the file in a second time.

Signed-off-by: Clement Leger <cleger@kalray.eu>
Tested-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

common: elf: add computation of elf boundaries ...

In order to correctly load an initrd or a device tree after an elf file,
we need to know its boundaries. This commit adds support for that and
allow the bootm implementations to use it for memory loading.

Signed-off-by: Clement Leger <cleger@kalray.eu>
Tested-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

include: add SPDX GPL-2.0-only license tags for files without licensing information ...

According to our /README, GPL-2.0-only applies for the whole project
except noted otherwise.

Signed-off-by: Roland Hieber <rohieb@rohieb.name>
Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

elf: add missing elf32_shdr ...

needed for remoteproc port

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

elf: add 64 bits elf loading support ...

This patch add elf64 loading support to the elf loader. Since
elf32 and elf64 uses completely different types, to avoid copying all
the code and simply replace elf32 with elf64, use a macro which will
return the appropriate field for each type of header. This macro
generates getter for elf structures according to the class of the loaded
elf.
All direct elf struct dereference are then replaced by call to generated
functions. This allows to keep a common loader code even if types are
different.

Tested-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Clement Leger <cleger@kalray.eu>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

add basic ELF parser ...

This parser is needed for kernel boot support on MIPS
and can potentially reused on other platforms.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

elf.h: Use EI_NIDENT instead of numeric value ...

This is an adoption of the linux kernel commit

| commit eb6900f
| Author: Cyrill Gorcunov <gorcunov@gmail.com>
| Date:   Tue Apr 29 01:01:17 2008 -0700
|
|     ELF: Use EI_NIDENT instead of numeric value
|
|     Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
|     Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

whole tree: remove trailing whitespaces ...

Signed-off-by: Du Huanpeng <u74147@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

replace elf.h with the one from the linux kernel. It does not have powerpc ...

specific defines in it.

svn_rev_003 ...

remove all #if 0 and #if 1

* Fix parameter passing to standalone images with bootm command ...

* Patch by Kyle Harris, 30 Oct 2003:
  Fix build errors for ixdp425 board

* Patch by David M. Horn, 29 Oct 2003:
  Fixes to build under CYGWIN

* Get IceCube MGT5100 working (again)

* Patch by Anders Larsen, 18 Sep 2003: ...

allow mkimage to build and run on Cygwin-hosted systems

* Patch by Frank Müller, 18 Sep 2003:
  use bi_intfreq instead of bi_busfreq to compute fec_mii_speed in
  cpu/mpc8xx/fec.c

* Patch by Pantelis Antoniou, 16 Sep 2003:
  add tool to compute fileds in the PLPRCR register for MPC86x

* Code cleanup: ...

- remove trailing white space, trailing empty lines, C++ comments, etc.
  - split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c)

* Patches by Kenneth Johansson, 25 Jun 2003:
  - major rework of command structure
    (work done mostly by Michal Cendrowski and Joakim Kristiansen)

Initial revision