Commit graph

38 commits

Author SHA1 Message Date
Łukasz Majewski
42f5e8a25a build:arm: Remove setting of CROSS_COMPILE environment variable
After Kbuild introduction, the CROSS_COMPILE environment variable has been
set to some default value (prefix arm-linux-).

This shall be removed since it breaks building u-boot for native arm target
(like qemu ARM).
Moreover not all compilers have arm-linux- prefix.

Additionally the u-boot cross compiles with CROSS_COMPILE= set explicitly-
e.g.:
CROSS_COMPILE=/ .... /arm-v7a-linux-gnueabi- make

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Cc: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-04-07 20:04:36 +02:00
Stefano Babic
1cad23c5f4 Merge branch 'master' of git://git.denx.de/u-boot-arm into master
Conflicts:
	arch/arm/cpu/arm926ejs/mxs/mxsimage.mx23.cfg
	arch/arm/cpu/arm926ejs/mxs/mxsimage.mx28.cfg

Signed-off-by: Stefano Babic <sbabic@denx.de>
2014-04-04 11:35:30 +02:00
Stefano Babic
e64348f5eb imx: add rules for U-Boot DTB support
Signed-off-by: Stefano Babic <sbabic@denx.de>
2014-04-02 10:45:35 +02:00
Masahiro Yamada
388b2e520b kbuild: move "checkthumb" to ARM archprepare
"checkthumb" makes sense only for ARM architecture.
Move it to arch/arm/config.mk.

To make sure gcc supports THUMB mode before beginning build,
run "checkthumb" during "archprepare".

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-03-07 10:59:06 -05:00
Masahiro Yamada
9b6e2c363f kbuild: fix CROSS_COMPILE settings in config.mk
The syntax
  CROSS_COMIPLE ?= <cross_compiler_prefix>
does not work because config.mk is parsed after
exporting CROSS_COMPILE.

Like Linux Kernel's arch/$(ARCH)/Makefile,
we must write as follows:

  ifeq ($(CROSS_COMPILE),)
  CROSS_COMPILE := <cross_compiler_prefix>
  endif

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-03-04 12:15:30 -05:00
Masahiro Yamada
a86cf89c76 kbuild: consolidate PLATFORM_LIBS
We had switched to Kbuild so now we can specify
PLATFORM_LIBS/PLATFORM_LIBGCC with relative path.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Tom Rini <trini@ti.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
2014-03-04 12:15:30 -05:00
Masahiro Yamada
630d23455b kbuild: refactor more IMX image rules
This commit avoids generating ./SPL twice.
  - Fist time descending to spl/
  - Second time as a prerequisite of u-boot-with-spl.imx,
    u-boot-with-nand-spl.imx.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-02-25 11:01:29 -05:00
Masahiro Yamada
95ddcd68ab kbuild: rename OBJCFLAGS to OBJCOPYFLAGS
Rename OBJCFLAGS to OBJCOPYFLAGS beforehand to use
"cmd_objcopy" in scripts/Makefile.lib in an upcoming commit.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-02-25 11:01:28 -05:00
Masahiro Yamada
bf1af3d872 ARM: merge commonly-defined PLATFORM_RELFLAGS
Before this commit, all arch/arm/cpu/${CPU}/config.mk except ARMv8
had the same option:
$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))

This commit moves it into arch/arm/config.mk.

If the compiler does not support the option,
it is ignored by $(call cc-option,...).
So this commit gives no harm to ARMv8.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-01-24 16:59:08 -05:00
Albert ARIBAUD
b02bfc4dfc arm: put .hash, .got.plt and .machine_param back in binaries
Some targets will build fine but not boot if sections .hash and
.got.plt are not present in the binary. Add them back.

Also, Exynos machines require .machine_param section in SPL.
Add it.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Tested-by: Rajeshwari S Shinde <rajeshwari.s@samsung.com>
2014-01-14 11:43:10 +01:00
David Feng
0ae7653128 arm64: core support
Relocation code based on a patch by Scott Wood, which is:
Signed-off-by: Scott Wood <scottwood@freescale.com>

Signed-off-by: David Feng <fenghua@phytium.com.cn>
2014-01-09 16:08:44 +01:00
Albert ARIBAUD
47ed5dd031 arm: keep all sections in ELF file
Current LDS files /DISCARD/ a lot of sections when linking ELF
files, causing diagnostic tools such as readelf or objdump to
produce partial output. Keep all section at link stage, filter
only at objcopy time so that .bin remains minimal.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2013-12-07 06:53:58 +01:00
Wolfgang Denk
93e1459641 Coding Style cleanup: replace leading SPACEs by TABs
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Drop changes for PEP 4 following python tools]
Signed-off-by: Tom Rini <trini@ti.com>
2013-10-14 16:06:54 -04:00
Jeroen Hofstee
fe1378a961 ARM: use r9 for gd
To be more EABI compliant and as a preparation for building
with clang, use the platform-specific r9 register for gd
instead of r8.

note: The FIQ is not updated since it is not used in u-boot,
and under discussion for the time being.

The following checkpatch warning is ignored:
WARNING: Use of volatile is usually wrong: see
Documentation/volatile-considered-harmful.txt

Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
2013-09-23 18:00:02 +02:00
Masahiro Yamada
3102274d8b ARM: refactor compiler options in config.mk
Every ARM cpu config.mk (arch/arm/cpu/{CPUDIR}/config.mk) defines:

PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float

So, this patch moves the common compiler options to arch/arm/config.mk.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-09-23 17:03:05 +02:00
Jeroen Hofstee
373d798394 arm: prevent using movt/movw address loads
The movt/movw instruction can be used to hardcode an
memory location in the instruction itself. The linker
starts complaining about this if the compiler decides
to do so: "relocation R_ARM_MOVW_ABS_NC against `a local
symbol' can not be used" and it is not support by U-boot
as well. Prevent their use by requiring word relocations.
This allows u-boot to be build at other optimalization
levels then -Os.

Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Cc: TigerLiu@viatech.com.cn
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Acked-by: Simon Glass <sjg@chromium.org>
2013-09-23 14:36:50 +02:00
Lokesh Vutla
806d279247 ARM: OMAP: Add CONFIG_OMAP_COMMON
Adding a new CONFIG_OMAP_COMMON which is included by all boards
that needs to build cpu/armv7/omap-common folder.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2013-08-15 08:51:10 -04:00
Wolfgang Denk
1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00
Albert ARIBAUD
c37980c31a arm: ensure u-boot only uses relative relocations
Add a Makefile target ('checkarmreloc') which
fails if the ELF binary contains relocation records
of types other than R_ARM_RELATIVE.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Tested-by: Lubomir Popov <lpopov@mm-sol.com>
Tested-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2013-06-21 22:59:20 +02:00
Tom Rini
fd72569179 arm: Enable -ffunction-sections / -fdata-sections / --gc-sections
While other architectures have enabled these gcc / ld options for some
time on U-Boot itself, ARM has only been doing this on SPL.  Enable this
on full U-Boot as well now.

Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Signed-off-by: Tom Rini <trini@ti.com>
2013-05-23 12:09:56 +02:00
Benoît Thébaudeau
66f30bf983 arm: Remove deprecated and now unused NAND SPL
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2013-04-12 07:55:08 +02:00
Tom Rini
bd380cf4cf arm: Correct CONFIG_STANDALONE_LOAD_ADDR for AM33XX/OMAP* platforms
All of these platforms have memory starting at 0x80000000, so this is
the correct CONFIG_STANDALONE_LOAD_ADDR for all of them.

Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Tom Rini <trini@ti.com>
2013-03-24 12:49:12 -04:00
Simon Glass
959daa21d4 arm: Enable generic board support
This enables generic board support so that ARM boards can define
CONFIG_SYS_GENERIC_BOARD.

Signed-off-by: Simon Glass <sjg@chromium.org>
2013-03-15 16:14:00 -04:00
Allen Martin
0f20bb601f arm: work around assembler bug
Disable sibling call optimization based on binutils version.  This is
to work around a bug in the assember in binutils versions < 2.22.
Branches to weak symbols can be incorrectly optimized in thumb mode to
a short branch (b.n instruction) that won't reach when the symbol gets
preempted.

http://sourceware.org/bugzilla/show_bug.cgi?id=12532

Signed-off-by: Allen Martin <amartin@nvidia.com>
Acked-by: Tom Rini <trini@ti.com>
2012-10-04 14:19:04 +02:00
Tom Rini
06a119a031 Makefile: Add a 'checkthumb' rule
This rule confirms that if we're on ARM and we have enabled THUMB builds
that we have a new enough toolchain to produce a working binary.

Changes in v2:
- Switch to ALL-$(CONFIG_SYS_THUMB_BUILD) in arch/arm/config.mk (Mike F)
- Simplfy checkthumb test after doing the above

Signed-off-by: Tom Rini <trini@ti.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2012-05-15 08:31:26 +02:00
Aneesh V
5356f5451e ARM: enable Thumb build
Enable Thumb build and ARM-Thumb interworking based on the new
config flag CONFIG_SYS_THUMB_BUILD

Signed-off-by: Aneesh V <aneesh@ti.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2012-05-15 08:31:26 +02:00
Simon Glass
9492791ab4 arm: Remove unneeded setting of LDCSRIPT
This is set by the top level Makefile anyway, so drop it. This does
have the effect of changing the order - now the board link script will
have preference over the CPU one. But this seems more correct anyway.

Signed-off-by: Simon Glass <sjg@chromium.org>
2012-03-30 07:43:40 +02:00
Wolfgang Denk
cca4e4aec1 Reduce build times
U-Boot Makefiles contain a number of tests for compiler features etc.
which so far are executed again and again.  On some architectures
(especially ARM) this results in a large number of calls to gcc.

This patch makes sure to run such tests only once, thus largely
reducing the number of "execve" system calls.

Example: number of "execve" system calls for building the "P2020DS"
(Power Architecture) and "qong" (ARM) boards, measured as:
	-> strace -f -e trace=execve -o /tmp/foo ./MAKEALL <board>
	-> grep execve /tmp/foo | wc -l

	Before: After:	Reduction:
==================================
P2020DS 20555	15205	-26%
qong	31692	14490	-54%

As a result, built times are significantly reduced, typically by
30...50%.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Andy Fleming <afleming@gmail.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Albert Aribaud <albert.aribaud@free.fr>
cc: Graeme Russ <graeme.russ@gmail.com>
cc: Mike Frysinger <vapier@gentoo.org>
Tested-by: Graeme Russ <graeme.russ@gmail.com>
Tested-by: Matthias Weisser <weisserm@arcor.de>
Tested-by: Sanjeev Premi <premi@ti.com>
Tested-by: Simon Glass <sjg@chromium.org>
Tested-by: Macpaul Lin <macpaul@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2011-11-03 20:44:58 +01:00
Aneesh V
5253418a77 arm: adjust PLATFORM_LIBS for SPL
Signed-off-by: Aneesh V <aneesh@ti.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
2011-07-26 14:43:48 +02:00
Michael Schwingen
363613a08d support CONFIG_SYS_LDSCRIPT on ARM
Signed-off-by: Michael Schwingen <michael@schwingen.org>
2011-06-23 08:24:55 +02:00
Scott Wood
83b7e2a7f2 Handle most LDSCRIPT setting centrally
Currently, some linker scripts are found by common code in config.mk.
Some are found using CONFIG_SYS_LDSCRIPT, but the code for that is
sometimes in arch config.mk and sometimes in board config.mk.  Some
are found using an arch-specific rule for looking in CPUDIR, etc.

Further, the powerpc config.mk rule relied on CONFIG_NAND_SPL
when it really wanted CONFIG_NAND_U_BOOT -- which covered up the fact
that not all NAND_U_BOOT builds actually wanted CPUDIR/u-boot-nand.lds.

Replace all of this -- except for a handful of boards that are actually
selecting a linker script in a unique way -- with centralized ldscript
finding.

If board code specifies LDSCRIPT, that will be used.
Otherwise, if CONFIG_SYS_LDSCRIPT is specified, that will be used.

If neither of these are specified, then the central config.mk will
check for the existence of the following, in order:

$(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds (only if CONFIG_NAND_U_BOOT)
$(TOPDIR)/$(CPUDIR)/u-boot-nand.lds (only if CONFIG_NAND_U_BOOT)
$(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
$(TOPDIR)/$(CPUDIR)/u-boot.lds

Some boards (sc3, cm5200, munices) provided their own u-boot.lds that
were dead code, because they were overridden by a CPUDIR u-boot.lds under
the old powerpc rules.  These boards' own u-boot.lds have bitrotted and
no longer work -- these lds files have been removed.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Tested-by: Graeme Russ <graeme.russ@gmail.com>
2011-04-30 00:59:47 +02:00
Wolfgang Denk
8ae86b76c6 Make STANDALONE_LOAD_ADDR configurable per board
Rename STANDALONE_LOAD_ADDR into CONFIG_STANDALONE_LOAD_ADDR
and allow that the architecture-specific default value gets
overwritten by defining the value in the board header file.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Tsi Chung Liew <tsi-chung.liew@freescale.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-04-12 22:58:32 +02:00
Stefano Babic
a4594e41b9 ARM: fix broken build of ARM
Commit 8aba9dceeb breaks
ARM boards because for ARM the -pie option is used
for partial linking together with -r option.

The patch adds the -pie option to link u-boot.bin only.

Signed-off-by: Stefano Babic <sbabic@denx.de>
CC: Jason Liu <liu.h.jason@gmail.com>
CC: lool@dooz.org
CC: Wolfgang Denk <wd@denx.de>
CC: Albert Aribaud <albert.aribaud@free.fr>
Tested-by: Alexander Holler <holler@ahsoftware.de>
2011-02-02 00:54:43 +01:00
Wolfgang Denk
a9aa392629 Drop support for CONFIG_SYS_ARM_WITHOUT_RELOC
When this define was introduced, the idea was to provide a soft
migration path for ARM boards to get adapted to the new relocation
support.  However, other recent changes led to a different
implementation (ELF relocation), where this no longer works.  By now
CONFIG_SYS_ARM_WITHOUT_RELOC does not only not help any more, but it
actually hurts because it obfuscates the actual code by sprinkling it
with lots of dead and non-working debris.

So let's make a clean cut and drop CONFIG_SYS_ARM_WITHOUT_RELOC.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Tested-by: Heiko Schocher <hs@denx.de>
Tested-by: Reinhard Meyer <u-boot@emk-elektronik.de>
2010-10-29 21:39:59 +02:00
Heiko Schocher
9710504d20 arm926ejs, tx25: add support for ELF relocations
Signed-off-by: Heiko Schocher <hs@denx.de>
2010-10-13 10:12:01 +02:00
Albert Aribaud
92d5ecba47 arm: implement ELF relocations
ELF relocation tables generated with linker option -pie can
be used to fixup code and data in a single loop at relocation,
removing the need for manual fixups anywhere else in the code.

Signed-off-by: Albert Aribaud <albert.aribaud@free.fr>
2010-10-13 10:10:21 +02:00
Heiko Schocher
f1d2b313c9 ARM: add relocation support
!! This breaks support for all arm boards !!

To compile in old style, you must define
CONFIG_SYS_ARM_WITHOUT_RELOC or you can compile
with "CONFIG_SYS_ARM_WITHOUT_RELOC=1 ./MAKEALL board"

!! This define will be removed soon, so convert your
board to use relocation support

Portions of this work were supported by funding from
the CE Linux Forum.

Signed-off-by: Heiko Schocher <hs@denx.de>

Fix boot from NAND for non-ARM systems
Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-09-19 19:29:53 +02:00
Peter Tyser
ea0364f1bb Move lib_$ARCH directories to arch/$ARCH/lib
Also move lib_$ARCH/config.mk to arch/$ARCH/config.mk

This change is intended to clean up the top-level directory structure
and more closely mimic Linux's directory organization.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-04-13 09:13:03 +02:00
Renamed from lib_arm/config.mk (Browse further)