Changes in Makefile

3b7f793a - ARC: migrate to the generic rule for built-in DTB

Sun, 22 Dec 2024 00:15:00 +0000

ARC: migrate to the generic rule for built-in DTBCommit 654102df2ac2 ("kbuild: add generic support for built-in bootDTBs") introduced generic support for built-in DTBs.Select GENERIC_BUILTIN_DTB to use the generic rule.To keep consistency across architectures, this commit also renamesCONFIG_ARC_BUILTIN_DTB_NAME to CONFIG_BUILTIN_DTB_NAME.Now, "nsim_700" is the default value for CONFIG_BUILTIN_DTB_NAME, ratherthan a fallback in case it is empty.Acked-by: Vineet Gupta Signed-off-by: Masahiro Yamada List of files: /linux-6.15/scripts/dtc/include-prefixes/arc/Makefile

b1992c37 - kbuild: use $(src) instead of $(srctree)/$(src) for source directory

Sat, 27 Apr 2024 14:55:02 +0000

kbuild: use $(src) instead of $(srctree)/$(src) for source directoryKbuild conventionally uses $(obj)/ for generated files, and $(src)/ forchecked-in source files. It is merely a convention without any functionaldifference. In fact, $(obj) and $(src) are exactly the same, as definedin scripts/Makefile.build: src := $(obj)When the kernel is built in a separate output directory, $(src) doesnot accurately reflect the source directory location. While Kbuildresolves this discrepancy by specifying VPATH=$(srctree) to search forsource files, it does not cover all cases. For example, when adding aheader search path for local headers, -I$(srctree)/$(src) is typicallypassed to the compiler.This introduces inconsistency between upstream and downstream Makefilesbecause $(src) is used instead of $(srctree)/$(src) for the latter.To address this inconsistency, this commit changes the semantics of$(src) so that it always points to the directory in the source tree.Going forward, the variables used in Makefiles will have the followingmeanings: $(obj) - directory in the object tree $(src) - directory in the source tree (changed by this commit) $(objtree) - the top of the kernel object tree $(srctree) - the top of the kernel source treeConsequently, $(srctree)/$(src) in upstream Makefiles need to be replacedwith $(src).Signed-off-by: Masahiro Yamada Reviewed-by: Nicolas Schier List of files: /linux-6.15/scripts/dtc/include-prefixes/arc/Makefile

129ab0d2 - kbuild: do not quote string values in include/config/auto.conf

Tue, 14 Dec 2021 02:53:53 +0000

kbuild: do not quote string values in include/config/auto.confThe previous commit fixed up all shell scripts to not includeinclude/config/auto.conf.Now that include/config/auto.conf is only included by Makefiles,we can change it into a more Make-friendly form.Previously, Kconfig output string values enclosed with double-quotes(both in the .config and include/config/auto.conf): CONFIG_X="foo bar"Unlike shell, Make handles double-quotes (and single-quotes as well)verbatim. We must rip them off when used.There are some patterns: [1] $(patsubst "%",%,$(CONFIG_X)) [2] $(CONFIG_X:"%"=%) [3] $(subst ",,$(CONFIG_X)) [4] $(shell echo $(CONFIG_X))These are not only ugly, but also fragile.[1] and [2] do not work if the value contains spaces, like CONFIG_X=" foo bar "[3] does not work correctly if the value contains double-quotes like CONFIG_X="foo\"bar"[4] seems to work better, but has a cost of forking a process.Anyway, quoted strings were always PITA for our Makefiles.This commit changes Kconfig to stop quoting in include/config/auto.conf.These are the string type symbols referenced in Makefiles or scripts: ACPI_CUSTOM_DSDT_FILE ARC_BUILTIN_DTB_NAME ARC_TUNE_MCPU BUILTIN_DTB_SOURCE CC_IMPLICIT_FALLTHROUGH CC_VERSION_TEXT CFG80211_EXTRA_REGDB_KEYDIR EXTRA_FIRMWARE EXTRA_FIRMWARE_DIR EXTRA_TARGETS H8300_BUILTIN_DTB INITRAMFS_SOURCE LOCALVERSION MODULE_SIG_HASH MODULE_SIG_KEY NDS32_BUILTIN_DTB NIOS2_DTB_SOURCE OPENRISC_BUILTIN_DTB SOC_CANAAN_K210_DTB_SOURCE SYSTEM_BLACKLIST_HASH_LIST SYSTEM_REVOCATION_KEYS SYSTEM_TRUSTED_KEYS TARGET_CPU UNUSED_KSYMS_WHITELIST XILINX_MICROBLAZE0_FAMILY XILINX_MICROBLAZE0_HW_VER XTENSA_VARIANT_NAMEI checked them one by one, and fixed up the code where necessary.Signed-off-by: Masahiro Yamada List of files: /linux-6.15/scripts/dtc/include-prefixes/arc/Makefile

ce0eff0d - ARC: [plat-hsdk]: allow to switch between AXI DMAC port configurations

Mon, 22 Jul 2019 09:31:45 +0000

ARC: [plat-hsdk]: allow to switch between AXI DMAC port configurationsWe want to use DW AXI DMAC on HSDK board in our automated verificationto test cache & dma kernel code changes. This is perfect candidateas we don't depend on any external peripherals like MMC card / USBstorage / etc.To increase test coverage we want to test both options: * DW AXI DMAC is connected through IOC port & dma direct ops used * DW AXI DMAC is connected to DDR port & dma noncoherent ops usedIntroduce 'arc_hsdk_axi_dmac_coherent' global variable which can bemodified by debugger (same way as we patch 'ioc_enable') to switchbetween these options without recompiling the kernel.Depend on this value we tweak memory bridge configuration and"dma-coherent" DTS property of DW AXI DMAC.Signed-off-by: Eugeniy Paltsev Acked-by: Alexey Brodkin Signed-off-by: Vineet Gupta List of files: /linux-6.15/scripts/dtc/include-prefixes/arc/Makefile

54a702f7 - kbuild: mark $(targets) as .SECONDARY and remove .PRECIOUS markers

Fri, 23 Mar 2018 13:04:39 +0000

kbuild: mark $(targets) as .SECONDARY and remove .PRECIOUS markersGNU Make automatically deletes intermediate files that are updatedin a chain of pattern rules.Example 1) %.dtb.o <- %.dtb.S <- %.dtb <- %.dtsExample 2) %.o <- %.c <- %.c_shippedA couple of makefiles mark such targets as .PRECIOUS to prevent Makefrom deleting them, but the correct way is to use .SECONDARY. .SECONDARY Prerequisites of this special target are treated as intermediate files but are never automatically deleted. .PRECIOUS When make is interrupted during execution, it may delete the target file it is updating if the file was modified since make started. If you mark the file as precious, make will never delete the file if interrupted.Both can avoid deletion of intermediate files, but the difference isthe behavior when Make is interrupted; .SECONDARY deletes the target,but .PRECIOUS does not.The use of .PRECIOUS is relatively rare since we do not want to keeppartially constructed (possibly corrupted) targets.Another difference is that .PRECIOUS works with pattern rules whereas.SECONDARY does not. .PRECIOUS: $(obj)/%.lex.cworks, but .SECONDARY: $(obj)/%.lex.chas no effect. However, for the reason above, I do not want to use.PRECIOUS which could cause obscure build breakage.The targets specified as .SECONDARY must be explicit. $(targets)contains all targets that need to include .*.cmd files. So, theintermediates you want to keep are mostly in there. Therefore, mark$(targets) as .SECONDARY. It means primary targets are also markedas .SECONDARY, but I do not see any drawback for this.I replaced some .SECONDARY / .PRECIOUS markers with 'targets'. Thiswill make Kbuild search for non-existing .*.cmd files, but this isnot a noticeable performance issue.Signed-off-by: Masahiro Yamada Acked-by: Frank Rowand Acked-by: Ingo Molnar List of files: /linux-6.15/scripts/dtc/include-prefixes/arc/Makefile

7e7962dd - kbuild: handle dtb-y and CONFIG_OF_ALL_DTBS natively in Makefile.lib

Sun, 05 Nov 2017 05:30:53 +0000

kbuild: handle dtb-y and CONFIG_OF_ALL_DTBS natively in Makefile.libIf CONFIG_OF_ALL_DTBS is enabled, "make ARCH=arm64 dtbs" compiles eachDTB twice; one from arch/arm64/boot/dts/*/Makefile and the other fromthe dtb-$(CONFIG_OF_ALL_DTBS) line in arch/arm64/boot/dts/Makefile.It could be a race problem when building DTBS in parallel.Another minor issue is CONFIG_OF_ALL_DTBS covers only *.dts in vendorsub-directories, so this broke when Broadcom added one more hierarchyin arch/arm64/boot/dts/broadcom//.One idea to fix the issues in a clean way is to move DTB handlingto Kbuild core scripts. Makefile.dtbinst already recognizes dtb-ynatively, so it should not hurt to do so.Add $(dtb-y) to extra-y, and $(dtb-) as well if CONFIG_OF_ALL_DTBS isenabled. All clutter things in Makefiles go away.As a bonus clean-up, I also removed dts-dirs. Just use subdir-ydirectly to traverse sub-directories.Signed-off-by: Masahiro Yamada Acked-by: Arnd Bergmann [robh: corrected BUILTIN_DTB to CONFIG_BUILTIN_DTB]Signed-off-by: Rob Herring List of files: /linux-6.15/scripts/dtc/include-prefixes/arc/Makefile

74ce1896 - kbuild: clean up .dtb and .dtb.S patterns from top-level Makefile

Thu, 02 Nov 2017 02:51:25 +0000

kbuild: clean up *.dtb and *.dtb.S patterns from top-level MakefileWe need to add "clean-files" in Makfiles to clean up DT blobs, but weoften miss to do so.Since there are no source files that end with .dtb or .dtb.S, so wecan clean-up those files from the top-level Makefile.Signed-off-by: Masahiro Yamada Acked-by: Arnd Bergmann Signed-off-by: Rob Herring List of files: /linux-6.15/scripts/dtc/include-prefixes/arc/Makefile

b2441318 - License cleanup: add SPDX GPL-2.0 license identifier to files with no license

Wed, 01 Nov 2017 14:07:57 +0000

License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseMany source files in the tree are missing licensing information, whichmakes it harder for compliance tools to determine the correct license.By default all files without license information are under the defaultlicense of the kernel, which is GPL version 2.Update the files which contain no license information with the 'GPL-2.0'SPDX license identifier. The SPDX identifier is a legally bindingshorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart andPhilippe Ombredanne.How this work was done:Patches were generated and checked against linux-4.14-rc6 for a subset ofthe use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information,Further patches will be generated in subsequent months to fix up caseswhere non-standard license headers were used, and references to licensehad to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied toa file was done in a spreadsheet of side by side results from of theoutput of two independent scanners (ScanCode & Windriver) producing SPDXtag:value files created by Philippe Ombredanne. Philippe prepared thebase worksheet, and did an initial spot review of a few 1000 files.The 4.13 kernel was the starting point of the analysis with 60,537 filesassessed. Kate Stewart did a file by file comparison of the scannerresults in the spreadsheet to determine which SPDX license identifier(s)to be applied to the file. She confirmed any determination that was notimmediately clear with lawyers working with the Linux Foundation.Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines).All documentation files were explicitly excluded.The following heuristics were used to determine which SPDX licenseidentifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time.In total, over 70 hours of logged manual review was done on thespreadsheet to determine the SPDX license identifiers to apply to thesource files by Kate, Philippe, Thomas and, in some cases, confirmationby lawyers working with the Linux Foundation.Kate also obtained a third independent scan of the 4.13 code base fromFOSSology, and compared selected files where the other two scannersdisagreed against that SPDX file, to see if there was new insights. TheWindriver scanner is based on an older version of FOSSology in part, sothey are related.Thomas did random spot checks in about 500 files from the spreadsheetsfor the uapi headers and agreed with SPDX license identifier in thefiles he inspected. For the non-uapi files Thomas did random spot checksin about 15000 files.In initial set of patches against 4.14-rc6, 3 files were found to havecopy/paste license identifier errors, and have been fixed to reflect thecorrect identifier.Additionally Philippe spent 10 hours this week doing a detailed manualinspection and review of the 12,461 patched files from the initial patchversion early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correctThis produced a worksheet with 20 files needing minor correction. Thisworksheet was then exported into 3 different .csv files for thedifferent types of files to be modified.These .csv files were then reviewed by Greg. Thomas wrote a script toparse the csv files and add the proper SPDX tag to the file, in theformat that the file expected. This script was further refined by Gregbased on the output to detect more types of files automatically and todistinguish between header and source .c files (which need differentcomment types.) Finally Greg ran the script using the .csv files togenerate the patches.Reviewed-by: Kate Stewart Reviewed-by: Philippe Ombredanne Reviewed-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/scripts/dtc/include-prefixes/arc/Makefile

b83abc8c - arc: enable building of all dtbs

Tue, 06 Oct 2015 22:51:00 +0000

arc: enable building of all dtbsEnable building all dtb files when CONFIG_OF_ALL_DTBS is enabled. The dtbsare not really dependent on a platform being enabled or any other kernelconfig, so for testing coverage it is convenient to build all of the dtbs.This builds all dts files in the tree, not just targets listed.Signed-off-by: Rob Herring Acked-by: Vineet Gupta List of files: /linux-6.15/scripts/dtc/include-prefixes/arc/Makefile

10375ccc - arc: use common make variables for dtb builds

Thu, 08 Oct 2015 15:10:53 +0000

arc: use common make variables for dtb buildsUse dtb-y and always make variables to build dtbs instead of explicitdtbs rule. This is in preparation to support building all dtbs.Signed-off-by: Rob Herring Acked-by: Vineet Gupta List of files: /linux-6.15/scripts/dtc/include-prefixes/arc/Makefile

fd155792 - ARC: [plat_arcfpga]->[plat_sim]

Fri, 20 Feb 2015 13:42:18 +0000

ARC: [plat_arcfpga]->[plat_sim]* Remove remanants of legacy ARC FPGA platforms (AA4, ML509...)* Only nsim simulation platform is left, rename platform accordingly* AA4 DT stuff is compatible with nsim for ARC700 so rename it tooSigned-off-by: Vineet Gupta List of files: /linux-6.15/scripts/dtc/include-prefixes/arc/Makefile

a89516b3 - ARC: [kbuild] Avoid DTB rebuilds if DTS are untouched

Tue, 16 Apr 2013 03:13:58 +0000

ARC: [kbuild] Avoid DTB rebuilds if DTS are untouchedCurrently, for every ARC kernel build I see the following:--------------->8----------------- DTB arch/arc/boot/dts/angel4.dtb.S AS arch/arc/boot/dts/angel4.dtb.o LD arch/arc/boot/dts/built-in.orm arch/arc/boot/dts/angel4.dtb.S <-- forces rebuild next iter CHK kernel/config_data.h--------------->8-----------------This is because *.dts.S is intermediate file in dtb generation and is bydefault deleted by make which needs a ".SECONDARY" hint to NOT do so.This could have ideally been done in scripts/Makefile.lib - for benefitof all, however .SECONDARY doesn't seem to work with wildcards.Thanks to Stephen for suggesting .SECONDARY (vs .PRECIOUS) and makingthat work using a non wildcard version in arch makefile.Thanks to James Hogan for pointing out that *.dtb.S now needs to beadded to clean-filesSigned-off-by: Stephen Warren Signed-off-by: Vineet Gupta List of files: /linux-6.15/scripts/dtc/include-prefixes/arc/Makefile

abe11dde - ARC: [plat-arcfpga]: Enabling DeviceTree for Angel4 board

Fri, 18 Jan 2013 09:42:21 +0000

ARC: [plat-arcfpga]: Enabling DeviceTree for Angel4 board* arc-uart platform device now populated dynamically, using of_platform_populate() - applies to any other device whatsoever.* uart in turn requires incore arc-intc to be also present in DT* A irq-domain needs to be instantiated for IRQ requests by DT probed device (e.g. arc-uart)TODO: switch over to linear irq domain once all devs have been transitioned to DTSigned-off-by: Vineet Gupta Cc: Grant Likely Cc: Arnd Bergmann List of files: /linux-6.15/scripts/dtc/include-prefixes/arc/Makefile

999159a5 - ARC: [DeviceTree] Basic support

Tue, 22 Jan 2013 11:30:52 +0000

ARC: [DeviceTree] Basic supportThis is minimal infrastructure needed for devicetree work.It uses an a sample "skeleton" devicetree - embedded in kernel image -to print the board, manufacturer by parsing the top-level "compatible"string.As of now we don't need any additional "board" specific "machine_desc".TODO: support interpreting the command line as boot-loader passed dtbSigned-off-by: Vineet Gupta Cc: Arnd Bergmann Cc: Grant Likely Cc: devicetree-discuss@lists.ozlabs.orgCc: Rob Herring Cc: James Hogan Reviewed-by: Rob Herring Reviewed-by: James Hogan List of files: /linux-6.15/scripts/dtc/include-prefixes/arc/Makefile