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* scripts/Makefile* Add SPDX-License-Identifier tagTom Rini2016-01-19-0/+3
| | | | | | | A general best practice for SPDX is that Makefiles should have an identifier, add these as everything else is currently covered. Signed-off-by: Tom Rini <trini@konsulko.com>
* kbuild: sync with Linux 4.1Masahiro Yamada2015-07-27-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update some build scripts to match Linux 4.1. Commit-based syncing was done so as not to break U-Boot specific changes. The previous big sync was from Linux 3.18-rc1 by commit 176d09827725 (kbuild: sync misc scripts with Linux 3.18-rc1). The commits imported from Linux (some with adjustments) are: [1] commit 9fb5e5372208973984a23ee6f5f025c05d364633 Author: Robert Richter <rrichter@cavium.com> dts, kbuild: Factor out dtbs install rules to Makefile.dtbinst [2] commit 371fdc77af44f4cb32475fd499e1d912ccc30890 Author: Masahiro Yamada <yamada.m@jp.panasonic.com> kbuild: collect shorthands into scripts/Kbuild.include [3] commit a29b82326ed4eb5567b03c85b52c6891578d5a03 Author: Michal Marek <mmarek@suse.cz> kbuild: Remove duplicate $(cmd) definition in Makefile.clean [4] commit 1846dfbde3e8a53f3673dcb1c1b79fd9b3f8d40d Author: Masahiro Yamada <yamada.m@jp.panasonic.com> kbuild: remove redundant -rR flag of hdr-inst [5] commit 34948e0bbf98640fc1821751b01d2f0cd17d84d5 Author: Michal Marek <mmarek@suse.cz> kbuild: Drop support for clean-rule [6] commit a16c5f99a28c9945165c46da27fff8e6f26f8736 Author: Michal Marek <mmarek@suse.cz> kbuild: Fix removal of the debian/ directory [7] commit d0d38cd9e853db11e0242b3df4c9c3c4a663fbb4 Author: Masahiro Yamada <yamada.m@jp.panasonic.com> kbuild: use mixed-targets when two or more config targets are given [8] commit dd33c03b18b3f2db791eb6a17c37d2de66e4de18 Author: Masahiro Yamada <yamada.m@jp.panasonic.com> kbuild: fix cc-ifversion macro [9] commit 665d92e38f65d70796aad2b8e49e42e80815d4a4 Author: Masahiro Yamada <yamada.m@jp.panasonic.com> kbuild: do not add $(call ...) to invoke cc-version or cc-fullversion [10] commit 6dcb4e5edf39e3b65a75ca76f087b2fdbee8a808 Author: Masahiro Yamada <yamada.m@jp.panasonic.com> kbuild: allow cc-ifversion to have the argument for false condition [11] commit c0a80c0c27e5e65b180a25e6c4c2f7ef9e386cd3 Author: Heiko Carstens <heiko.carstens@de.ibm.com> ftrace: allow architectures to specify ftrace compile options [12] commit 0b24becc810dc3be6e3f94103a866f214c282394 Author: Andrey Ryabinin <a.ryabinin@samsung.com> kasan: add kernel address sanitizer infrastructure [13] commit 4218affdf57f938c04e3a916a9685ee27079f377 Author: Masahiro Yamada <yamada.m@jp.panasonic.com> kbuild: remove warning about "make depend" [14] commit 77479b38e2f58890eb221a0418357502a5b41cd6 Author: Nathan Rossi <nathan.rossi@xilinx.com> kbuild: Create directory for target DTB Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Robert Richter <rrichter@cavium.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com> Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Michal Marek <mmarek@suse.cz> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
* kconfig: switch to single .config configurationMasahiro Yamada2015-02-24-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When Kconfig for U-boot was examined, one of the biggest issues was how to support multiple images (Normal, SPL, TPL). There were actually two options, "single .config" and "multiple .config". After some discussions and thought experiments, I chose the latter, i.e. to create ".config", "spl/.config", "tpl/.config" for Normal, SPL, TPL, respectively. It is true that the "multiple .config" strategy provided us the maximum flexibility and helped to avoid duplicating CONFIGs among Normal, SPL, TPL, but I have noticed some fatal problems: [1] It is impossible to share CONFIG options across the images. If you change the configuration of Main image, you often have to adjust some SPL configurations correspondingly. Currently, we cannot handle the dependencies between them. It means one of the biggest advantages of Kconfig is lost. [2] It is too painful to change both ".config" and "spl/.config". Sunxi guys started to work around this problem by creating a new configuration target. Commit cbdd9a9737cc (sunxi: kconfig: Add %_felconfig rule to enable FEL build of sunxi platforms.) added "make *_felconfig" to enable CONFIG_SPL_FEL on both images. Changing the configuration of multiple images in one command is a generic demand. The current implementation cannot propose any good solution about this. [3] Kconfig files are getting ugly and difficult to understand. Commit b724bd7d6349 (dm: Kconfig: Move CONFIG_SYS_MALLOC_F_LEN to Kconfig) has sprinkled "if !SPL_BUILD" over the Kconfig files. [4] The build system got more complicated than it should be. To adjust Linux-originated Kconfig to U-Boot, the helper script "scripts/multiconfig.sh" was introduced. Writing a complicated text processor is a shell script sometimes caused problems. Now I believe the "single .config" will serve us better. With it, all the problems above would go away. Instead, we will have to add some CONFIG_SPL_* (and CONFIG_TPL_*) options such as CONFIG_SPL_DM, but we will not have much. Anyway, this is what we do now in scripts/Makefile.spl. I admit my mistake with my apology and this commit switches to the single .config configuration. It is not so difficult to do that: - Remove unnecessary processings from scripts/multiconfig.sh This file will remain for a while to support the current defconfig format. It will be removed after more cleanups are done. - Adjust some makefiles and Kconfigs - Add some entries to include/config_uncmd_spl.h and the new file scripts/Makefile.uncmd_spl. Some CONFIG options that are not supported on SPL must be disabled because one .config is shared between SPL and U-Boot proper going forward. I know this is not a beautiful solution and I think we can do better, but let's see how much we will have to describe them. - update doc/README.kconfig More cleaning up patches will follow this. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* kbuild: sync misc scripts with Linux 3.18-rc1Masahiro Yamada2014-11-07-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | This commit imports some updates in misc scripts from Linux 3.18-rc1. [1] commit cbb4d3e6510b99522719c5ef0 by Horia Geanta scripts/kernel-doc: handle object-like macros [2] commit 164f0d2efaaef83 by Michal Marek kbuild: Fix handling of backslashes in *.cmd files [3] commit 270a00963cd367214e by Randy Dunlap scripts/kernel-doc: recognize __meminit [4] commit a4954fd7724c0f55361eb5 by Masahiro Yamada kbuild: remove obj-n and lib-n handling [5] commit 5b2389b45d1a9c12b9f by Masahiro Yamada kbuild: simplify build, clean, modbuiltin shorthands Signed-off-by: Horia Geanta <horia.geanta@freescale.com> Signed-off-by: Michal Marek <mmarek@suse.cz> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* kbuild: improve multi-objs dependency and cleanupsMasahiro Yamada2014-11-07-6/+4
| | | | | | | | | | | | | | | | | | | | | | Since Linux 3.18-rc1, Kbuild is able to handle multi-objs dependency correctly, which also allows us futher cleanups of some makefiles. This commit imports those commits: [1] commit c8589d1e9e01 by Masahiro Yamada kbuild: handle multi-objs dependency appropriately [2] commit 97e3226e6e98 by Masahiro Yamada kbuild: handle the dependency of multi-objs hostprogs appropriately [3] commit 022af62d0190 by Masahiro Yamada kbuild: refactor script/kconfig/Makefile [4] commit 221ecca6cafe by Masahiro Yamada kbuild: remove redundant clean-files from scripts/kconfig/Makefile Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* kbuild: move extra gcc checks to scripts/Makefile.extrawarnMasahiro Yamada2014-08-21-61/+0
| | | | | | | | | | | | | | | | | | This commit was imported from Linux Kernel: commit a86fe353 written by me. W=... provides extra gcc checks. Having such code in scripts/Makefile.build results in the same flags being added to KBUILD_CFLAGS multiple times becuase scripts/Makefile.build is invoked every time Kbuild descends into the subdirectories. Since the top Makefile is already too cluttered, this commit moves all of extra gcc check stuff to a new file scripts/Makefile.extrawarn, which is included from the top Makefile. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* kconfig: switch to KconfigMasahiro Yamada2014-07-30-20/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit enables Kconfig. Going forward, we use Kconfig for the board configuration. mkconfig will never be used. Nor will include/config.mk be generated. Kconfig must be adjusted for U-Boot because our situation is a little more complicated than Linux Kernel. We have to generate multiple boot images (Normal, SPL, TPL) from one source tree. Each image needs its own configuration input. Usage: Run "make <board>_defconfig" to do the board configuration. It will create the .config file and additionally spl/.config, tpl/.config if SPL, TPL is enabled, respectively. You can use "make config", "make menuconfig" etc. to create a new .config or modify the existing one. Use "make spl/config", "make spl/menuconfig" etc. for spl/.config and do likewise for tpl/.config file. The generic syntax of configuration targets for SPL, TPL is: <target_image>/<config_command> Here, <target_image> is either 'spl' or 'tpl' <config_command> is 'config', 'menuconfig', 'xconfig', etc. When the configuration is done, run "make". (Or "make <board>_defconfig all" will do the configuration and build in one time.) For futher information of how Kconfig works in U-Boot, please read the comment block of scripts/multiconfig.py. By the way, there is another item worth remarking here: coexistence of Kconfig and board herder files. Prior to Kconfig, we used C headers to define a set of configs. We expect a very long term to migrate from C headers to Kconfig. Two different infractructure must coexist in the interim. In our former configuration scheme, include/autoconf.mk was generated for use in makefiles. It is still generated under include/, spl/include/, tpl/include/ directory for the Normal, SPL, TPL image, respectively. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org>
* cosmetic: kbuild: clean-up coding style (sync with Linux 3.16-rc1)Masahiro Yamada2014-06-20-2/+2
| | | | | | | | | | | Import the following trivial commits from Linux v3.16-rc1: bb66fc6 kbuild: trivial - use tabs for code indent where possible 7eb6e34 kbuild: trivial - remove trailing empty lines 3fbb43d kbuild: trivial - fix comment block indent 38385f8 kbuild: trivial - remove trailing spaces Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* kbuild: sync with Linux Kernel v3.15-rc1Masahiro Yamada2014-04-18-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit imports Kbuild-related updates from v3.14 to v3.15-rc1. - commit 3d3d6b8474204b6819688c9800774d52d370a538 kbuild: LLVMLinux: Adapt warnings for compilation with clang - commit 61163efae02040f66a95c8ed17f4407951ba58fa kbuild: LLVMLinux: Add Kbuild support for building kernel with Clang - commit 79192ca8ebd9a25c583aa46024a250fef1e7766f scripts: objdiff: detect object code changes between two commits - commit 1c9e70a55b088d97a59241744fe459409d0c3582 kbuild: create a build directory automatically for out-of-tree build - commit a03fcb50e816a69acffb13b5e56db75063aeba8a kbuild: remove redundant '.*.cmd' pattern from make distclean - commit 13338935f1574a2dcd1c891461b0dcc42f8cff42 kbuild: move "quote" to Kbuild.include to be consistent - commit bfdfaeae500a3b194b73b01e92a8034791a58b7f kbuild: specify build_docproc as a phony target - commit f4d4ffc03efc864645b990e1d579bbe1b8e358a4 kbuild: dtbs_install: new make target - commit 1e64ff42ea3d8d2fc8aa71f9717b3c1cb6c2f893 Kbuild, lto: Disable LTO for asm-offsets.c - commit ccbef1674a1579842c7dbdf554efca85d2cd245a Kbuild, lto: add ld-version and ld-ifversion macros - commit ae63b2d7bdd9bd66b88843be0daf8e37d8f0b574 scripts/tags.sh: Ignore *.mod.c - commit e36aaea28972c57a32a3ba5365e61633739719b9 kbuild: Fix silent builds with make-4 Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* kbuild: improve Kbuild speedMasahiro Yamada2014-03-07-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kbuild brought about many advantages for us but a significant performance regression was reported by Simon Glass. After some discussions and analysis, it turned out its main cause is in $(call cc-option,...). Historically, U-Boot parses all config.mk (arch/*/config.mk and board/*/config.mk) every time descending into subdirectories. That means cc-options are evaluated over and over again. $(call cc-option,...) is useful but costly. So we want to evaluate them only in ./Makefile and spl/Makefile and export compiler flags. This commit changes the build system as follows: - Modify scripts/Makefile.build to not include config.mk Instead, add $(PLATFORM_CPPFLAGS) to asflags-y, ccflags-y, cppflags-y. - Export many variables Going forward, Kbuild will not parse config.mk files when it descends into subdirectories. If we want to set variables in config.mk and use them in subdirectories, they must be exported. This is the list of variables to get exported: PLATFORM_CPPFLAGS CPUDIR BOARDDIR OBJCOPYFLAGS LDFLAGS LDFLAGS_FINAL (used in nand_spl/board/*/*/Makefile) CONFIG_STANDALONE_LOAD_ADDR (used in examples/standalone/Makefile) SYM_PREFIX (used in examples/standalone/Makefile) RELFLAGS (used in examples/standalone/Makefile) - Delete CPPFLAGS This variable has been replaced with PLATFORM_CPPFLAGS - Copy gcclibdir from example/standalone/Makefile to arch/sparc/config.mk The reference in CONFIG_STANDALONE_LOAD_ADDR must be resolved before it is exported. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Reported-by: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org> [on Sandbox] Tested-by: Stephen Warren <swarren@nvidia.com> [on Tegra]
* kbuild: move include directives of board configuration filesMasahiro Yamada2014-02-19-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit changes the location of include directives of board configuration files. The purpose of this change is: - Slim down $(TOPDIR)/config.mk - Prevent $(TOPDIR)/Makefile from including the same configuration file twice - Do not include include/config.mk multiple times because ARCH, CPU, BOARD, VENDOR, SOC are exported Before this commit: - include/autoconf.mk was included from $(TOPDIR)/Makefile and $(TOPDIR)/config.mk (This means $(TOPDIR)/Makefile included include/autoconf.mk twice) - include/{spl,tpl}-autoconf.mk was included from $(TOPDIR)/config.mk - include/config.mk was included from $(TOPDIR)/Makefile and $(TOPDIR)/config.mk (This means $(TOPDIR)/Makefile included include/config.mk twice) After this commit: - include/autoconf.mk is included from $(TOPDIR)/Makefile and $(TOPDIR)/scripts/Makefile.build - include/{spl,tpl}-autoconf.mk is included from $(TOPDIR)/spl/Makefile and $(TOPDIR)/scripts/Makefile.build - include/config.mk is included from $(TOPDIR)/config.mk and $(TOPDIR)/spl/Makefile Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* kbuild: use Linux Kernel build scriptsMasahiro Yamada2014-02-19-3/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | Now we are ready to switch over to real Kbuild. This commit disables temporary scripts: scripts/{Makefile.build.tmp, Makefile.host.tmp} and enables real Kbuild scripts: scripts/{Makefile.build,Makefile.host,Makefile.lib}. This switch is triggered by the line in scripts/Kbuild.include -build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build.tmp obj +build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj We need to adjust some build scripts for U-Boot. But smaller amount of modification is preferable. Additionally, we need to fix compiler flags which are locally added or removed. In Kbuild, it is not allowed to change CFLAGS locally. Instead, ccflags-y, asflags-y, cppflags-y, CFLAGS_$(basetarget).o, CFLAGS_REMOVE_$(basetarget).o are prepared for that purpose. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Tested-by: Gerhard Sittig <gsi@denx.de>
* kbuild: import more build scripts from Linux v3.13 tagMasahiro Yamada2014-02-19-0/+479
| | | | | | | | | | This commit imports build scripts from Linux Kernel v3.13 as they are. I know they include some trailing spaces but I am intentionally keeping them untouched. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* Makefile: rename scripts/Makefile.build to scripts/Makefile.build.tmpMasahiro Yamada2014-02-19-127/+0
| | | | | | | | | | | | Some build scripts including scripts/Makefile.build will be imported from Linux Kernel in the next commit. We need to adjust them for U-Boot in the following commits. To make it easier for reviewers to track the modification, this commit renames scripts/Makefile.build to scripts/Makefile.build.tmp beforehand. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* kbuild: change out-of-tree buildMasahiro Yamada2014-02-19-20/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* kbuild: Use Kbuild.includeMasahiro Yamada2014-02-19-0/+1
| | | | | | | | | | | | | | | | This commit adjusts some files to use Kbuild.include. - Use cc-option defined in Kbuild.include (Delete cc-option in config.mk) - Use cc-version defined in (Delete cc-version in config.mk) - Move binutils-version and dtc-version to Kbuild.include by analogy to cc-version This commit also adds srctree (same as SRCTREE) to use Kbuild scripts. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* Makfile: move suffix rules to Makefile.buildMasahiro Yamada2014-02-19-0/+31
| | | | | | | | | | | | | | | | | | | This commit moves suffix rules from config.mk to scripts/Makefile.build, which will allow us to switch smoothly to real Kbuild. Note1: post/lib_powerpc/fpu/Makefile has its own rule to compile C sources. We need to tweak it to keep the same behavior. Note2: There are two file2 with the same name: arch/arm/lib/crt0.S and eamples/api/crt0.S. To keep the same build behavior, examples/api/Makefile also has to be treaked. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* examples: Use scripts/Makefile.buildMasahiro Yamada2014-02-19-3/+4
| | | | Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* Makefile.host.tmp: add a new script to refactor toolsMasahiro Yamada2014-02-19-3/+14
| | | | | | | | | | | | | | This commit adds scripts/Makefile.host.tmp which will be used in the next commit to convert makefiles under tools/ directory to Kbuild style. Notice this script, scripts/Makefile.host.tmp is temporary. When switching over to real Kbuild, it will be replaced with scripts/Makefile.host of Linux Kernel. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* Makefile: make directories by Makefile.buildMasahiro Yamada2013-11-17-0/+7
| | | | Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* Makefile: abolish COBJS, SOBJS, etc.Masahiro Yamada2013-11-17-8/+4
| | | | | | | | The support for COBJS, COBJS-y, SOBJS, SOBJS-y, GLCOBJS, GLSOBJS from scripts/Makefile.build. Going forward we need to use Kbuild style consistently. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* Makefile: support descending down to subdirectoriesMasahiro Yamada2013-10-31-0/+15
| | | | | | | | | | | | | This patch tweaks scripts/Makefile.build to allow the build system to descend into subdirectories like Kbuild. To use this feature, use "obj-y += foo/" syntax. Example: obj-$(CONFIG_FOO) += foo/ Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Simon Glass <sjg@chromium.org>
* Makefile: prepare for using Kbuild-style MakefileMasahiro Yamada2013-10-31-0/+48
Every makefile in sub directories has common lines at the top and the bottom. This commit pushes the common parts into script/Makefile.build. Going forward sub-makefiles only need to describe this part: COBJS := ... COBJS += ... SOBJS := ... But using obj-y is preferable to prepare for switching to Kbuild. The conventional (non-Kbuild) Makefile style is still supported. This is achieved by greping the Makefile before entering into it. U-Boot conventional sub makefiles always include some other makefiles. So the build system searches a line beginning with "include" keyword in the makefile in order to distinguish which style it is. If the Makefile include a "include" line, we assume it is a conventional U-Boot style. Otherwise, it is treated as a Kbuild-style makefile. With this tweak, we can switch sub-makefiles from U-Boot style to Kbuild style little by little. obj-y := foo/ syntax (descending into the sub directory) is not supportd yet. It will be implemented in the upcomming commit. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Simon Glass <sjg@chromium.org> Cc: Tom Rini <trini@ti.com>
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