kbuild: prefix compiler flag variables with KBUILD_ ...

In old days, Linux also used to use well-known variables such CFLAGS,
CPPFLAGS, etc.

They were prefixed with KBUILD_ presumably for preventing users from
overriding them accidentally.

Rename as follows:
  CFLAGS          ->  KBUILD_CFLAGS
  AFLAGS          ->  KBUILD_AFLAGS
  CPPFLAGS        ->  KBUILD_CPPFLAGS
  LDFLAGS         ->  KBUILD_LDFLAGS
  HOSTCFLAGS      ->  KBUILD_HOSTCFLAGS
  HOSTCXXFLAGS    ->  KBUILD_HOSTCXXFLAGS
  HOSTLDFLAGS     ->  KBUILD_HOSTLDFLAGS
  HOST_LOADLIBES  ->  KBUILD_HOSTLDLIBS

HOSTCFLAGS, HOSTCXXFLAGS, HOSTLDFLAGS, HOSTLDLIBS are re-used to allow
users to pass-in additional flags to the host compiler.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

x86: update boot message "UBOOT2" to "BAREBOX" ...

Signed-off-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Documentation: remove doxygen documentation ...

The doxygen documentation is long outdated. Remove it. It will
be replaced with sphinx based documentation later.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

x86: initialize malloc pool before start_barebox() ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Cleanup Kconfig files ...

This patch provides a global cleanup barebox Kconfig files. This includes
replacing spaces to tabs, formatting in accordance format, removing
extraneous lines and spaces. No functional changes.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Treewide: remove address of the Free Software Foundation ...

The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

x86: fix symbol size calculation ...

The size is being calculated after changing to another section, which
gives error with gcc 4.6:

  AS      arch/x86/lib/traveler.o
/tmp/ccP0z8xx.s: Assembler messages:
/tmp/ccP0z8xx.s: Error: .size expression for real_to_prot does not evaluate to a constant
/tmp/ccP0z8xx.s: Error: .size expression for prot_to_real does not evaluate to a constant
make[1]: *** [arch/x86/lib/traveler.o] Error 1

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

introduce io.h ...

To allow for some generic io accessors introduce io.h and use
this instead of asm/io.h throughout the tree.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

x86/pmjump: rename __bss_end to __bss_stop ...

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

x86: use sections.h header file for linker variables ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

doc: let doxygen find some assembler functions ...

Silences these warnings:

arch/x86/boot/boot_hdisk.S:29: Warning: documented function `void real_start' was not declared or defined.
arch/x86/boot/boot_main.S:28: Warning: documented function `void _start' was not declared or defined.
arch/x86/boot/pmjump.S:20: Warning: documented function `void protected_mode_jump' was not declared or defined.
arch/x86/lib/memory16.S:32: Warning: documented function `unsigned short bios_get_memsize' was not declared or defined.
arch/x86/lib/traveler.S:31: Warning: documented function `void real_to_prot' was not declared or defined.
arch/x86/lib/traveler.S:38: Warning: documented function `void prot_to_real' was not declared or defined.

Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Add functions to be able to boot with BIOSs help ...

These functions are special: They are running in the 16 bit real mode world
to bring up barebox on an x86 box.

Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>