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Import endian head files from FreeBSD 11.0. The link of FreeBSD source code
is https://github.com/freebsd/freebsd



Import machine/endian.h from sys/arm64/include/endian.h in FreeBSD.
commit d09ff72cef8e35dbf62f7363dcbf07b453f06243
Author: andrew <andrew@FreeBSD.org>
Date:   Mon Mar 23 11:54:56 2015 +0000

    Add the start of the arm64 machine headers. This is the subset needed to
    start getting userland libraries building.

    Reviewed by:        imp
    Sponsored by:       The FreeBSD Foundation

Import sys/endian.h from sys/sys/endian.h in FreeBSD.
commit 3c3fa2f5b0c7640373fcbcc3f667bf7794e8e609
Author: phk <phk@FreeBSD.org>
Date:   Thu May 20 06:16:13 2010 +0000

    Fix some way-past-brucification complaints from FlexeLint.
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>

Some header files need to be shared between TF and host programs.
For fiptool, two headers are copied to the tools/fiptool directory,
but it looks clumsy.

This commit introduces a new directory, include/tools_share, which
collects headers that should be shared between TF and host programs.

This will clarify the interface exposed to host tools.  We should
add new headers to this directory only when we really need to do so.

For clarification, I inserted a blank line between headers from the
include/ directory (#include <...>) and ones from a local directory
(#include "..." ).
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

Previously, fiptool only understood a fixed set of images as
specified in tbbr_config.c.  It preserved unknown images during
the update, unpack and remove operations but it was not possible to
explicitly refer to one of those unknown images.

Add a new --blob option to create/update/unpack/remove images that
are not known at compile time.  This is accomplished by specifying
the UUID and filename pair as shown below:

$ ./fiptool create --blob uuid=01234567-89ab-cdef-0123-456789abcdef,file=foo.bin fip.bin
$ ./fiptool info fip.bin
01234567-89ab-cdef-0123-456789abcdef: offset=0x60, size=0x1AA68

Fixes ARM-software/tf-issues#420

Change-Id: Iaac2504b9a4252289c09e73d29645cbe240f3a82
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>

This include provides nothing useful for TF and prevents building
the fiptool using musl libc[0].

[0] https://www.musl-libc.org/



Change-Id: Ied35e16b9ea2b40213433f2a8185dddc59077884
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>

* Move stdlib header files from include/stdlib to include/lib/stdlib for
  consistency with other library headers.
* Fix checkpatch paths to continue excluding stdlib files.
* Create stdlib.mk to define the stdlib source files and include directories.
* Include stdlib.mk from the top level Makefile.
* Update stdlib header path in the fip_create Makefile.
* Update porting-guide.md with the new paths.

Change-Id: Ia92c2dc572e9efb54a783e306b5ceb2ce24d27fa