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* ARM: move -march=* and -mtune= options to arch/arm/MakefileMasahiro Yamada2015-03-27-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | My main motivations for this commit are: [1] Follow the arch/arm/Makefile style of Linux Kernel [2] Maintain compiler options systematically Currently, we give -march=* and -mtune=* options inconsistently: Only some of the CPUs pass -march=* and -mtune=* options. By collecting such options into the single place arch/arm/Makefile we can tell which options are missing at a glance. [3] Prepare for deprecating arch/*/cpu/*/config.mk Note: This commit just moves the compiler options so as not to change the behavior at all. It does not care about the correctness of the given options. Fox example, "-march=armv5te" might be better than "-march=armv4" for ARM946EJS, but it is beyond the scope this commit. Also, filling the missing -march=* and -tune=* is left to follow-up patches. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Marek Vasut <marex@denx.de> Acked-by: Stefan Roese <sr@denx.de>
* Merge branch 'master' of git://git.denx.de/u-boot-armTom Rini2014-02-26-2/+5
|\ | | | | | | | | | | | | | | | | Conflicts: arch/arm/cpu/armv7/config.mk board/ti/am43xx/mux.c include/configs/am43xx_evm.h Signed-off-by: Tom Rini <trini@ti.com>
| * arm: Switch to -mno-unaligned-access when supported by the compilerTom Rini2014-02-26-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we tell the compiler to optimize for ARMv7 (and ARMv6 for that matter) it assumes a default of SCTRL.A being cleared and unaligned accesses being allowed and fast at the hardware level. We set this bit and must pass along -mno-unaligned-access so that the compiler will still breakdown accesses and not trigger a data abort. To better help understand the requirements of the project with respect to unaligned memory access, the Documentation/unaligned-memory-access.txt file has been added as doc/README.unaligned-memory-access.txt and is taken from the v3.14-rc1 tag of the kernel. Cc: Albert ARIBAUD <albert.u.boot@aribaud.net> Cc: Mans Rullgard <mans@mansr.com> Signed-off-by: Tom Rini <trini@ti.com>
* | kbuild: refactor more IMX image rulesMasahiro Yamada2014-02-25-10/+0
| | | | | | | | | | | | | | | | | | 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>
* | kbuild: use shorten logs for IMX imagesMasahiro Yamada2014-02-25-1/+1
|/ | | | Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* kbuild: change out-of-tree buildMasahiro Yamada2014-02-19-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit changes the working directory where the build process occurs. Before this commit, build process occurred under the source tree for both in-tree and out-of-tree build. That's why we needed to add $(obj) prefix to all generated files in makefiles like follows: $(obj)u-boot.bin: $(obj)u-boot Here, $(obj) is empty for in-tree build, whereas it points to the output directory for out-of-tree build. And our old build system changes the current working directory with "make -C <sub-dir>" syntax when descending into the sub-directories. On the other hand, Kbuild uses a different idea to handle out-of-tree build and directory descending. The build process of Kbuild always occurs under the output tree. When "O=dir/to/store/output/files" is given, the build system changes the current working directory to that directory and restarts the make. Kbuild uses "make -f $(srctree)/scripts/Makefile.build obj=<sub-dir>" syntax for descending into sub-directories. (We can write it like "make $(obj)=<sub-dir>" with a shorthand.) This means the current working directory is always the top of the output directory. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Tested-by: Gerhard Sittig <gsi@denx.de>
* ARM: merge commonly-defined PLATFORM_RELFLAGSMasahiro Yamada2014-01-24-8/+0
| | | | | | | | | | | | | | Before this commit, all arch/arm/cpu/${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>
* ARM: refactor compiler options in config.mkMasahiro Yamada2013-09-23-1/+0
| | | | | | | | | | 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>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-24-17/+1
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* imx: Fix automatic make targets for imx imagesBenoît Thébaudeau2013-04-12-0/+6
| | | | | | | | | | | | | | Automatically build the 'u-boot.imx' (i.e. imx header + u-boot.bin) and 'SPL' (i.e. imx header + u-boot-spl.bin) make targets for all imx processors supporting this header, so for arm926ejs, arm1136 and armv7. Some combinations were missing. At the same time, fix the build of SPL targets not supporting the imx header on arm1136. For arm1136, the 'SPL' make target was forced to build in all cases if CONFIG_SPL_BUILD was defined, even for non-imx platforms or imx setups without an imx header. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
* build: imx: Fix 'u-boot.imx' build without full OBJTREE referenceOtavio Salvador2013-02-12-1/+1
| | | | | | | | | | | | | | | | | | | When calling 'make u-boot.imx' the build were failing as it were expecting the full path for the file; this regression has been included by commit 71a988a (imximage.cfg: run files through C preprocessor). The direct references for u-boot.imx were replaced by $(obj) as config.mk handles the proper setting of it making it set to $(OBJTREE) when required. The build has been test using: - ./MAKEALL -s mx5 -s mx6 - make u-boot.imx - make O=/tmp/build Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
* imximage.cfg: run files through C preprocessorTroy Kisky2013-01-22-1/+1
| | | | | | | | | | | | The '#' used as comments in the files cause the preprocessor trouble, so change to /* */. The mkimage command which uses this preprocessor output was moved to arch/arm/imx-common/Makefile .gitignore was updated to ignore .cfgtmp files. Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
* ARM: prevent misaligned array initsAlbert ARIBAUD2012-10-15-2/+5
| | | | | | | | | | | | | | Under option -munaligned-access, gcc can perform local char or 16-bit array initializations using misaligned native accesses which will throw a data abort exception. Fix files where these array initializations were unneeded, and for files known to contain such initializations, enforce gcc option -mno-unaligned-access. Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net> [trini: Switch to usign call cc-option for -mno-unaligned-access as Albert had done previously as that's really correct] Signed-off-by: Tom Rini <trini@ti.com>
* arm: armv7: temporarily set -mno-unaligned-accessAlbert ARIBAUD2012-10-05-0/+2
| | | | | | | | | This patch aims at ensuring that the 2012.10 release works out-of-the-box on as many targets as possible, by reinstating commit 5347560f5427bcdd48a563b62180481606ac8044, which adds option -mno-unaligned-access to armv7 builds. This patch will be overriden immediately after release of 2012.10.
* Revert "arm: armv7: add compile option -mno-unaligned-access if available"Albert ARIBAUD2012-09-01-2/+0
| | | | | | This reverts commit 5347560f5427bcdd48a563b62180481606ac8044, which was applied only to get release 2012.07 functional on as many ARM targets as possible despite mis-aligned accesses.
* arm: armv7: add compile option -mno-unaligned-access if availableTetsuyuki Kobayashi2012-07-20-0/+2
| | | | | | | | | | Recent compiler generates unaligned memory access in armv7 default. But current U-Boot does not allow unaligned memory access, so it causes data abort exception. This patch add compile option "-mno-unaligned-access" if it is available. Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp> Tested-by: Gary Thomas <gary@mlbassoc.com>
* armv7: Use -march=armv7-a and thereby enable Thumb-2Aneesh V2012-05-15-2/+5
| | | | | | | | Enable -march=armv7-a for armv7 platforms if the tool-chain supports it. This in turn results in Thumb-2 code generated for these platforms if CONFIG_SYS_THUMB_BUILD is enabled. Signed-off-by: Aneesh V <aneesh@ti.com>
* ARM: add u-boot.imx as target for i.MX SOCsStefano Babic2012-04-16-0/+3
| | | | | | | | | | | | | | | Freescale SOCs require an header to u-boot.bin The patch adds u-boot.imx to the default targets if the imx file is set (IMX_CONFIG). Signed-off-by: Stefano Babic <sbabic@denx.de> Cc: Albert ARIBAUD <albert.u.boot@aribaud.net> CC: Loïc Minier <loic.minier@linaro.org> CC: Mike Frysinger <vapier@gentoo.org> Acked-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Dirk Behme <dirk.behme@de.bosch.com> Tested-by: Dirk Behme <dirk.behme@googlemail.com>
* Reduce build timesWolfgang Denk2011-11-03-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* ARM: Rename arch/arm/cpu/arm_cortexa8 to armv7Steve Sakoman2010-07-05-0/+33
The purpose of this patch is to prepare for adding the OMAP4 architecture, which is Cortex A9 Cortex A8 and A9 both belong to the armv7 architecture, hence the name change. The two architectures are similar enough that substantial code can be shared. Signed-off-by: Aneesh V <aneesh@ti.com> Signed-off-by: Steve Sakoman <steve@sakoman.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>