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* Refactor linker-generated arraysAlbert ARIBAUD2013-03-12-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | Refactor linker-generated array code so that symbols which were previously linker-generated are now compiler- generated. This causes relocation records of type R_ARM_ABS32 to become R_ARM_RELATIVE, which makes code which uses LGA able to run before relocation as well as after. Note: this affects more than ARM targets, as linker- lists span possibly all target architectures, notably PowerPC. Conflicts: arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds arch/arm/cpu/armv7/omap-common/u-boot-spl.lds board/ait/cam_enc_4xx/u-boot-spl.lds board/davinci/da8xxevm/u-boot-spl-da850evm.lds board/davinci/da8xxevm/u-boot-spl-hawk.lds board/vpac270/u-boot-spl.lds Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
* common: Add symbol handling for generic lists into MakefileMarek Vasut2012-10-22-0/+2
| | | | | | | | | | | | | | | | | | | | | | | This patch adds essential components for generation of the contents of the linker section that is used by the linker-generated array. All of the contents is held in a separate file, u-boot.lst, which is generated at runtime just before U-Boot is linked. The purpose of this code is to especially generate the appropriate boundary symbols around each subsection in the section carrying the linker-generated arrays. Obviously, the interim linker code for actual placement of the variables into the section is generated too. The generated file, u-boot.lst, is included into u-boot.lds via the linker INCLUDE directive in u-boot.lds . Adjustments are made in the Makefile and spl/Makefile so that the u-boot.lds and u-boot-spl.lds depend on their respective .lst files. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Joe Hershberger <joe.hershberger@gmail.com> Cc: Mike Frysinger <vapier@gentoo.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com> Tested-by: Joe Hershberger <joe.hershberger@ni.com>
* add check infrastructure, default sparseKim Phillips2012-10-15-0/+8
| | | | | | | | | | Add support for running source code checkers on u-boot source, e.g., using sparse to aid with typechecking. This comes in especially handy as SoC vendors mix and match cores and devices with different endianness, thus here we add CHECK_ENDIAN to the otherwise linux kernel default CHECKFLAGS. Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
* serial: Compile drivers/serial/serial.c by defaultMarek Vasut2012-10-15-1/+1
| | | | | | | | | | | | | Compile drivers/serial/serial.c by default both into SPL and into non-SPL builds, since CONFIG_SERIAL_MULTI is now the default state. Also having common/serial.c in by default now, it's pointless to keep -DCONFIG_SERIAL_MULTI in CPPFLAGS any longer, so remove it as well. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Marek Vasut <marek.vasut@gmail.com> Cc: Tom Rini <trini@ti.com> Cc: Anatolij Gustschin <agust@denx.de> Cc: Stefan Roese <sr@denx.de>
* serial: Unconditionally enable CONFIG_SERIAL_MULTIMarek Vasut2012-10-15-1/+1
| | | | | | | | | | | | | Enable CONFIG_SERIAL_MULTI for all builds of U-Boot. That includes both SPL builds and non-SPL builds, everything. To avoid poluting this patch with removal of ifdef-endif constructions containing CONFIG_SERIAL_MULTI, the CONFIG_SERIAL_MULTI is temporarily added into CPPFLAGS in config.mk . This will be again removed in following patch. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Marek Vasut <marek.vasut@gmail.com> Cc: Tom Rini <trini@ti.com>
* tools, config.mk: add binutils-versionAllen Martin2012-10-04-0/+1
| | | | | | | Modeled after gcc-version, add function to get binutils version. Signed-off-by: Allen Martin <amartin@nvidia.com> Acked-by: Wolfgang Denk <wd@denx.de>
* config: Always use GNU ldKhem Raj2012-08-10-1/+5
| | | | | | | | | | | | | | | | | | This patch makes sure that we always use the GNU ld. U-Boot uses certain construct e.g. OVERLAY which are not implemented in gold therefore it always needs GNU ld for linking. It works well if default linker in toolchain is GNU ld but in some cases we can have gold to be the default linker and also ship GNU ld but not as default in such cases its called $(PREFIX)ld.bfd, with this patch we make sure that if $(PREFIX)ld.bfd exists than we use that for our ld. This way it does not matter what the default ld is. Signed-off-by: Otavio Salvador <otavio@ossystems.com.br> Signed-off-by: Khem Raj <raj.khem@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org>
* Makefile: Add u-boot.spr build target (SPEAr)Stefan Roese2012-07-07-0/+4
| | | | | | | | | | | | | On x600 (SPEAr600) U-Boot is appended to U-Boot SPL. Both images are created using mkimage (crc etc), so that the ROM bootloader can check its integrity. Padding needs to be done to the SPL image (with mkimage header) and not the binary. Otherwise the resulting image which is loaded/copied by the ROM bootloader to SRAM doesn't fit. The resulting image containing both U-Boot images is called u-boot.spr. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Amit Virdi <amit.virdi@st.com> Cc: Vipin Kumar <vipin.kumar@st.com>
* tools, config.mk: Add gcc-version.sh, cc-version test from LinuxTom Rini2012-05-15-1/+5
| | | | | | Added from Linux - commit fde7d9049e55ab85a390be7f415d74c9f62dd0f9 Signed-off-by: Tom Rini <trini@ti.com>
* config.mk: Check for -fstack-usage supportTom Rini2012-03-26-0/+4
| | | | | Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Tom Rini <trini@ti.com>
* config.mk: Make cc-option create a file under include/generatedTom Rini2012-03-26-4/+3
| | | | | | | Testing for -fstack-usage requires the creation of an output file, which isn't possible with /dev/null. Signed-off-by: Tom Rini <trini@ti.com>
* config.mk: use memoization in cc-option macro to speed up compilationDaniel Schwierzeck2011-11-07-2/+18
| | | | | | | | | | | Apply memoization to cc-option macro by caching the results of the gcc calls. This macro is called very often so using cached results leads to faster compilation times. The old behaviour can be restored by defining the config option CONFIG_CC_OPT_CACHE_DISABLE=y. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
* Reduce build timesWolfgang Denk2011-11-03-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* fdt: Add support for embedded device tree (CONFIG_OF_EMBED)Simon Glass2011-10-26-0/+1
| | | | | | | | | | | | | | | | | This new option allows U-Boot to embed a binary device tree into its image to allow run-time control of peripherals. This device tree is for U-Boot's own use and is not necessarily the same one as is passed to the kernel. The device tree compiler output should be placed in the $(obj) rooted tree. Since $(OBJCOPY) insists on adding the path to the generated symbol names, to ensure consistency it should be invoked from the directory where the .dtb file is located and given the input file name without the path. This commit contains my entry for the ugliest Makefile / shell interaction competition. Signed-off-by: Simon Glass <sjg@chromium.org>
* build: force migration away from $(AR)Mike Frysinger2011-10-22-5/+3
| | | | | | | | | People keep adding new code that still uses $(AR) instead of $(cmd_link_o_target), so turn it into a build time error. We still use $(AR) locally, but we don't use $(ARFLAGS). Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Adjust dependency rules to permit per-file flagsSimon Glass2011-10-17-0/+7
| | | | | | | | | | | | | | The dependency rules are currently done in a shell 'for' loop. This does not permit Makefile variables to adjust preprocessor flags as is done with normal compile flags, using the CFLAGS_path/file.o syntax. This change moves the dependency generation into the Makefile itself, and permits a CPPFLAGS_path/file.o to adjust preprocessor flags on a file or directory basis. The CPPFLAGS_... variable is also folded into CFLAGS during the build. Signed-off-by: Simon Glass <sjg@chromium.org>
* disable security warning flags when possibleMike Frysinger2011-07-26-0/+4
| | | | | | | | | | | | Some toolchains enable security warning flags by default, but these don't really make sense in the u-boot world. Such as forcing changes like: -printf(foo); +printf("%s", foo); So disable the flags when the compiler supports them. Linux has already merged a similar change in their build system. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Extend build-system for SPL frameworkDaniel Schwierzeck2011-07-26-1/+33
| | | | | Signed-off-by: Aneesh V <aneesh@ti.com> Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
* config.mk: move LDSCRIPT processing to the top-level MakefileIlya Yanok2011-06-22-30/+0
| | | | | | | | | | LDSCRIPT is used only from the top-level Makefile and only when the system is configured so we can move LDSCRIPT and CONFIG_SYS_LDSCRIPT related logic into the top level Makefile and under configured condition to avoid errors when building tools from unconfigured tree. Signed-off-by: Ilya Yanok <yanok@emcraft.com> Acked-by: Mike Frysinger <vapier@gentoo.org>
* Handle most LDSCRIPT setting centrallyScott Wood2011-04-30-5/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* Introduce a new linker flag LDFLAGS_FINALHaiying Wang2011-03-22-1/+2
| | | | | | | | | | | | | | | commit 8aba9dceebb14144e07d19593111ee3a999c37fc Divides variable of linker flags to LDFLAGS-u-boot and LDFLAGS breaks the usage of --gc-section to build nand_spl. We still need linker option --gc-section for every uboot image, not only the main one. LDFLAGS_FINAL passes the --gc-sections to each uboot image. To get the proper linker flags, we use LDFLAGS and LDFLAGS_FINAL to replace PLATFORM_LDFLAGS in the Makefile of each nand_spl board. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
* Top config.mk: add include/config.mkJoakim Tjernlund2011-03-21-0/+1
| | | | | | | | Seems to me that the top level config.mk should include the auto generated include/config.mk so that all Makefile's pickup those definitions. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
* Divides variable of linker flags to LDFLAGS-u-boot and LDFLAGSNobuhiro Iwamatsu2011-01-25-3/+5
| | | | | | | | | | Linker needs to use the proper endian/bfd flags even when doing partial linking. LDFLAGS_u-boot sets linker option which is called it when U-boot is built (u-boot final). LDFLAGS sets necessary option by partial linking (use in cmd_link_o_target). CC: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
* config.mk: unify duplicated flag settingMike Frysinger2010-12-17-10/+7
| | | | | | | | | | Multiple rules are using the expanded AFLAGS/CFLAGS settings and some are getting so long that the rules need to be line wrapped. So unify them in one variable, use that variable in the rule, and then unwrap things. This makes the actual `make` output nicer as it doesn't have line continuations in it anymore. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Coding Style (white space) cleanupWolfgang Denk2010-11-27-4/+4
| | | | Signed-off-by: Wolfgang Denk <wd@denx.de>
* Switch from archive libraries to partial linkingSebastien Carlier2010-11-17-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com>
* Rename TEXT_BASE into CONFIG_SYS_TEXT_BASEWolfgang Denk2010-10-18-5/+5
| | | | | | | | | | | | The change is currently needed to be able to remove the board configuration scripting from the top level Makefile and replace it by a simple, table driven script. Moving this configuration setting into the "CONFIG_*" name space is also desirable because it is needed if we ever should move forward to a Kconfig driven configuration system. Signed-off-by: Wolfgang Denk <wd@denx.de>
* config.mk: avoid -traditional-cpp on OS X 10.5Mike Frysinger2010-08-09-5/+5
| | | | | | | | | | | | | | | | | Simply trying to include a basic header file like stdlib.h on OS X 10.5 and then building with -traditional-cpp fails with lots of errors like: In file included from /usr/include/stdlib.h:63, from test.c:3: /usr/include/available.h:85: error: stray '#' in program /usr/include/available.h:85: error: syntax error before numeric constant /usr/include/available.h:86: error: stray '#' in program In the past, I hadn't noticed because the old logic for these flags were restricted to Darwin running on PowerPC systems while I'm running on an Intel system. But after some recent clean ups and changes, the flag was being applied to all Darwin systems and my host tools broke. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* nios: remove nios-32 archThomas Chou2010-05-28-8/+0
| | | | | | The nios-32 arch is obsolete and broken. So it is removed. Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
* config.mk: use different host compiler for OS X 10.6Andreas Biessmann2010-05-26-3/+11
| | | | | | | | | | | | | | | | Compiling tools subdirectory on Mac OS X 10.6 (Snow Leopard) complains about wrong syntax in system includes. In file included from /usr/include/stdio.h:444, from ../source/u-boot/include/compiler.h:26, from ../source/u-boot/lib/crc32.c:15: /usr/include/secure/_stdio.h:46: error: syntax error in macro parameter list This can be fixed by reverting the workaround for prior OS X releases in config.mk conditionally for OS X 10.6+. Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com> Acked-by: Mike Frysinger <vapier@gentoo.org>
* ppc: Move cpu/$CPU to arch/ppc/cpu/$CPUPeter Tyser2010-04-13-1/+6
| | | | Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
* Move lib_$ARCH directories to arch/$ARCH/libPeter Tyser2010-04-13-1/+1
| | | | | | | | | 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>
* Change directory-specific CFLAGS to use full pathPeter Tyser2010-04-13-6/+11
| | | | | | | | | | | | | | | | | | Previously, a specific file or directory could be compiled with custom CFLAGS by adding a Makefile variable such as: CFLAGS_dlmalloc.o = <custom flags for common/dlmalloc.c> or CFLAGS_lib = <custom flags for lib directory> This method breaks down once multiple files or directories share the same path. Eg FLAGS_fileA = <custom flags> would incorrectly result in both dir1/fileA.c and dir2/fileA.c being compiled with <custom flags>. This change allows finer grained control which we need once we move lib_$ARCH to arch/$ARCH/lib/ and lib_generic/ to lib/. Without this change all lib/ directories would share the same custom CFLAGS. Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
* Create CPUDIR variablePeter Tyser2010-04-13-6/+7
| | | | | | | | | | | | The CPUDIR variable points to the location of a target's CPU directory. Currently, it is set to cpu/$CPU. However, using $CPUDIR will allow for more flexibility in the future. It lays the groundwork for reorganizing U-Boot's directory structure to support a layout such as: arch/$ARCH/cpu/$CPU/* (architecture with multiple CPU types) arch/$ARCH/cpu/* (architecture with one CPU type) Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
* makefiles: fixes for building build toolsScott Wood2009-12-02-3/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, some of the tools instead set CC to be HOSTCC in order to re-use some pattern rules -- but this fails when the user overrides CC on the make command line. Also, the HOSTCFLAGS in tools/Makefile are currently not being used because config.mk overwrites them. This patch adds static pattern rules for files that have been requested to be built with the native compiler using $(HOSTSRCS) and $(HOSTOBJS), and converts the tools to use them. It restores easylogo to using the host compiler, which was broken by commit 38d299c2db81bd889c601b5dfc12c4e83ef83333 (if this was an intentional change, please let me know -- but it seems to be a build tool). It restores -pedantic and the special flags for darwin and cygwin that were requested in tools/makefile (but keeps the flags added by config.mk) -- hopefully someone can test this on those platforms. It no longer conditionalizes -pedantic on not being darwin; it wasn't clear that that was intentional, and unless there's a real problem it's just inviting people to contribute non-pedantic patches to those files (I'm not a fan of -pedantic personally, but if it's on for one platform it should be on for all). HOST_LDFLAGS is renamed HOSTLDFLAGS for consistency with the previous HOST_CFLAGS to HOSTCFLAGS rename. A new HOSTCFLAGS_NOPED is made available for those files which currently cannot be built with -pedantic, and replaces the old FIT_CFLAGS. imls now uses the cross compiler properly, rather than by trying to reconstruct CC using the typoed $(CROSS_COMPILER). envcrc.c is now dependency-processed unconditionally -- previously it would be built without being on (HOST)SRCS if CONFIG_ENV_IS_EMBEDDED was not selected. Signed-off-by: Scott Wood <scottwood@freescale.com>
* ppc/85xx: Introduce RESET_VECTOR_ADDRESS to handle non-standard link addressKumar Gala2009-09-09-0/+4
| | | | | | | | | | Some board ports place TEXT_BASE at a location that would cause the RESET_VECTOR_ADDRESS not to be at 0xfffffffc when we link. By default we assume RESET_VECTOR_ADDRESS will be 0xfffffffc if the board doesn't explicitly set it. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Wolfgang Denk <wd@denx.de>
* start a linker script helper fileMike Frysinger2009-08-23-10/+0
| | | | | | | | | | | | | | | Start a common header file for common linker script code (such as workarounds for older linkers) rather than doing this in the build system. As fallout, we no longer execute the linker every time config.mk is included by a build file (which can easily be 70+ times), but rather only execute it once. This also fixes a bug in the major version checking by creating a macro to easily compare versions and keep people from making the same common mistake (forgetting to check major and minor together). Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Fix all linker scripts for older binutils versions (pre-2.16)Wolfgang Denk2009-08-21-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit f62fb99941c6 fixed handling of all rodata sections by using a wildcard combined with calls to ld's builtin functions SORT_BY_ALIGNMENT() and SORT_BY_NAME(). Unfortunately these functions were only introduced with biunutils version 2.16, so the modification broke building with all tool chains using older binutils. This patch makes it work again. This is done by omitting the use of these functions for such old tool chains. This will result in slightly larger target binaries, as the rodata sections are no longer in optimal order alignment-wise which reauls in unused gaps, but the effect was found to be insignificant - especially compared to the fact that you cannot build U-Boot at all in the current state. As ld seems to have no support for conditionals we run the linker script through the C preprocessor which can be easily used to remove the unwanted function calls. Note that the C preprocessor must be run with the "-ansi" (or a "-std=") option to make sure all the system-specific predefined macros outside the reserved namespace are suppressed. Otherise, cpp might for example substitute "powerpc" to "1", thus corrupting for example "OUTPUT_ARCH(powerpc)" etc. Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Mike Frysinger <vapier@gentoo.org>
* ARM: compiler options cleanup - improve tool chain supportWolfgang Denk2009-08-21-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For some time there have been repeated reports about build problems with some ARM (cross) tool chains. Especially issues about (in)compatibility with the tool chain provided runtime support library libgcc.a caused to add and support a private implementation of such runtime support code in U-Boot. A closer look at the code indicated that some of these issues are actually home-made. This patch attempts to clean up some of the most obvious problems and make building of U-Boot with different tool chains easier: - Even though all ARM systems basicy used the same compiler options to select a specific ABI from the tool chain, the code for this was distributed over all cpu/*/config.mk files. We move this one level up into lib_arm/config.mk instead. - So far, we only checked if "-mapcs-32" was supported by the tool chain; if yes, this was used, if not, "-mabi=apcs-gnu" was selected, no matter if the tool chain actually understood this option. There was no support for EABI conformant tool chains. This patch implements the following logic: 1) If the tool chain supports "-mabi=aapcs-linux -mno-thumb-interwork" we use these options (EABI conformant tool chain). 2) Otherwise, we check first if "-mapcs-32" is supported, and then check for "-mabi=apcs-gnu" If one test succeeds, we use the first found option. 3) In case 2), we also test if "-mno-thumb-interwork", and use this if the test succeeds. [For "-mabi=aapcs-linux" we set "-mno-thumb-interwork" mandatorily.] This way we use a similar logic for the compile options as the Linux kernel does. - Some EABI conformant tool chains cause external references to utility functions like raise(); such functions are provided in the new file lib_arm/eabi_compat.c Note that lib_arm/config.mk gets parsed several times, so we must make sure to add eabi_compat.o only once to the linker list. Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Cc: Dirk Behme <dirk.behme@googlemail.com> Cc: Magnus Lilja <lilja.magnus@gmail.com> Cc: Tom Rix <Tom.Rix@windriver.com> Cc: Prafulla Wadaskar <prafulla@marvell.com> Acked-by: Sergey Kubushyn <ksi@koi8.net> Tested-by: Magnus Lilja <lilja.magnus@gmail.com> Tested-by: Andrzej Wolski <awolski@poczta.fm> Tested-by: Gaye Abdoulaye Walsimou <walsimou@walsimou.com> Tested-by: Tom Rix <Tom.Rix@windriver.com> Tested-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* Move architecture specific config.mk files into subdirsPeter Tyser2009-07-21-1/+1
| | | | | | | | This cleans up U-Boot's toplevel directory a bit and makes the architecture 'config.mk' file naming and location similar to board and cpu 'config.mk' files Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
* config.mk: Remove unused HPATHShinya Kuribayashi2009-07-19-1/+1
| | | | | | This variable is not unused anywhere. Signed-off-by: Shinya Kuribayashi <skuribay@pobox.com>
* config.mk: Remove $(PCI_CLOCK) referenceShinya Kuribayashi2009-07-17-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following commit introduced $(PCI_CLOCK) reference so that we could tweak `PCI_66M' definition via an environment variable. > commit f046ccd15c8bc9613bfd72916b761a127d36e5c6 > Author: Eran Liberty <liberty@freescale.com> > Date: Thu Jul 28 10:08:46 2005 -0500 > > * Patch by Eran Liberty > Add support for the Freescale MPC8349ADS board. But I suggest a removal of it for the following reasons: * In 2006, MPC8349ADS was merged into MPC8349EMDS port, and it seems that MPC8349EMDS port is PCI_66M free. * OTOH, PCI_66M is used by MPC832XEMDS an MPC8360EMDS ports, but they don't need $(PCI_CLOCK) environment variable at all. PCI_66M is automatically configured via $(BOARD)_config names with the help of $(findstring _66_,$@). * Unfortunately $(PCI_CLOCK) has been undocumented anywhere, so only a few people know the existence of it these days. * Keep config.mk independent from $(BOARD) as much as possible. Signed-off-by: Shinya Kuribayashi <skuribay@pobox.com> Acked-by: Kim Phillips <kim.phillips@freescale.com>
* add %.c->%.i and %.c->%.s rulesMike Frysinger2009-06-14-0/+4
| | | | | | | | | | | The Linux kernel has some helper rules which allow you to quickly produce some of the intermediary files from C source. Specifically, you can create .i files which is the preprocessed output and you can create .s files which is the assembler output. This is useful when you are trying to track down header/macro expansion errors or inline assembly errors. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* allow boards to customize compiler options on a per-file/dir basisMike Frysinger2009-06-14-3/+5
| | | | | | | | | | | | | | With our Blackfin boards, we like to build the compression routines with -O2 as our tests show a pretty good size/speed tradeoff. For the rest of U-Boot though, we want to stick with the default -Os as that is mostly control code. So in our case, we would add a line like so to the board specific config.mk file: CFLAGS_lib_generic += -O2 Now all files under lib_generic/ will have -O2 appended to their build. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* config.mk: remove un-needed REMOTE_BUILD checkJean-Christophe PLAGNIOL-VILLARD2009-06-12-12/+0
| | | | | | | | | | | | | | | | | as $(obj) is empty when in tree build %.s: %.S $(CPP) $(AFLAGS) -o $@ $< and $(obj)%.s: %.S $(CPP) $(AFLAGS) -o $@ $< are the same Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Mike Frysinger <vapier@gentoo.org>
* build system: treat all Darwin's alikeMike Frysinger2009-01-18-2/+2
| | | | | | | The x86 based version of Darwin behaves the same quirky way as the powerpc Darwin, so only check HOSTOS when setting up Darwin workarounds. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Remove unneeded CONFIG_SHELL referencesPeter Tyser2008-12-08-7/+2
| | | | | | | Make should be using the bash shell by default which makes CONFIG_SHELL unnecessary Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
* make: Remove redundant __ARM__ addition when cross-compiling on *BSDShinya Kuribayashi2008-09-12-9/+0
| | | | | | __ARM__ is given by arm_config.mk automatically. Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
* config.mk: Move arch-specific condition to $(ARCH)_config.mkShinya Kuribayashi2008-09-07-16/+0
| | | | Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
* Conditionally add -fno-stack-protector to CFLAGSHaavard Skinnemoen2008-06-26-0/+2
| | | | | | | | | | | | | | | | | | | | When compile-testing on powerpc, I get errors like this: net/nfs.c:422: undefined reference to `__stack_chk_fail_local' This seems to be because -fstack-protector is on by default, so let's explicitly disable it on all architectures that support the option. The Ubuntu toolchain is affected by this problem, and according to Mike Frysinger, Gentoo has been running with SSP enabled for years. More and more distros are turning SSP on by default, so this problem is likely to get worse in the future. Also, powerpc just happens to be one of the arches I do compile-testing on. There may be other arches affected by this too. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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