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/arch/arc/Makefile

824927e8 - ARC: build: Try to guess GCC variant of cross compiler

Tue, 03 Dec 2024 12:37:15 +0000

ARC: build: Try to guess GCC variant of cross compilerARC GCC compiler is packaged starting from Fedora 39i and the GCCvariant of cross compile tools has arc-linux-gnu- prefix and notarc-linux-. This is causing that CROSS_COMPILE variable is left unset.This change allows builds without need to supply CROSS_COMPILE argumentif distro package is used.Before this change:$ make -j 128 ARCH=arc W=1 drivers/infiniband/hw/mlx4/ gcc: warning: ‘-mcpu=’ is deprecated; use ‘-mtune=’ or ‘-march=’ instead gcc: error: unrecognized command-line option ‘-mmedium-calls’ gcc: error: unrecognized command-line option ‘-mlock’ gcc: error: unrecognized command-line option ‘-munaligned-access’[1] https://packages.fedoraproject.org/pkgs/cross-gcc/gcc-arc-linux-gnu/index.htmlSigned-off-by: Leon Romanovsky Signed-off-by: Vineet Gupta List of files: /linux-6.15/arch/arc/Makefile

cfca4b5a - ARC: entry: use gp to cache task pointer (vs. r25)

Wed, 13 May 2020 05:18:08 +0000

ARC: entry: use gp to cache task pointer (vs. r25)The motivation is eventual ABI considerations for ARCv3 but even withoutit this change us worthwhile as diffstat reduces 100 net linesr25 is a callee saved register, normally not saved by entry code inpt_regs. However because of its usage in CONFIG_ARC_CURR_IN_REG it needsto be. This in turn requires a whole bunch of special casing when weneed to access r25. Then there is distinction between user mode r25 vs.kernel mode r25 - hence distinct SAVE_CALLEE_SAVED_{USER,KERNEL}Instead use gp which is a scratch register and thus saved already in entrycode. This cleans things up significantly and much nocer on eyes: - SAVE_CALLEE_SAVED_{USER,KERNEL} are now exactly same - no special user_r25 slot in pt_reggsNote that typical global asm registers are callee-saved (r25), but gp isnot callee-saved thus needs additional -ffixed- toggleSigned-off-by: Vineet Gupta List of files: /linux-6.15/arch/arc/Makefile

ce697cce - kbuild: remove head-y syntax

Sat, 24 Sep 2022 18:19:15 +0000

kbuild: remove head-y syntaxKbuild puts the objects listed in head-y at the head of vmlinux.Conventionally, we do this for head*.S, which contains the kernel entrypoint.A counter approach is to control the section order by the linker script.Actually, the code marked as __HEAD goes into the ".head.text" section,which is placed before the normal ".text" section.I do not know if both of them are needed. From the build systemperspective, head-y is not mandatory. If you can achieve the proper codeplacement by the linker script only, it would be cleaner.I collected the current head-y objects into head-object-list.txt. It isa whitelist. My hope is it will be reduced in the long run.Signed-off-by: Masahiro Yamada Tested-by: Nick Desaulniers Reviewed-by: Nicolas Schier List of files: /linux-6.15/arch/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/arch/arc/Makefile

8212f898 - kbuild: use more subdir- for visiting subdirectories while cleaning

Wed, 13 Oct 2021 06:36:22 +0000

kbuild: use more subdir- for visiting subdirectories while cleaningDocumentation/kbuild/makefiles.rst suggests to use "archclean" forcleaning arch/$(SRCARCH)/boot/, but it is not a hard requirement.Since commit d92cc4d51643 ("kbuild: require all architectures to havearch/$(SRCARCH)/Kbuild"), we can use the "subdir- += boot" trick forall architectures. This can take advantage of the parallel option (-j)for "make clean".I also cleaned up the comments in arch/$(SRCARCH)/Makefile. The "archdep"target no longer exists.Signed-off-by: Masahiro Yamada Reviewed-by: Kees Cook Acked-by: Geert Uytterhoeven Acked-by: Michael Ellerman (powerpc) List of files: /linux-6.15/arch/arc/Makefile

43e6b58f - arc: replace cc-option-yn uses with cc-option

Tue, 17 Aug 2021 00:21:06 +0000

arc: replace cc-option-yn uses with cc-optioncc-option-yn can be replaced with cc-option. ie.Checking for support:ifeq ($(call cc-option-yn,$(FLAG)),y)becomes:ifneq ($(call cc-option,$(FLAG)),)Checking for lack of support:ifeq ($(call cc-option-yn,$(FLAG)),n)becomes:ifeq ($(call cc-option,$(FLAG)),)This allows us to pursue removing cc-option-yn.Signed-off-by: Nick Desaulniers Reviewed-by: Nathan Chancellor Signed-off-by: Masahiro Yamada List of files: /linux-6.15/arch/arc/Makefile

d92cc4d5 - kbuild: require all architectures to have arch/$(SRCARCH)/Kbuild

Wed, 12 May 2021 07:57:25 +0000

kbuild: require all architectures to have arch/$(SRCARCH)/Kbuildarch/$(SRCARCH)/Kbuild is useful for Makefile cleanups because you canuse the obj-y syntax.Add an empty file if it is missing in arch/$(SRCARCH)/.Signed-off-by: Masahiro Yamada List of files: /linux-6.15/arch/arc/Makefile

f79f7a2d - arc: Fix typos/spellos

Mon, 22 Mar 2021 12:28:19 +0000

arc: Fix typos/spelloss/commiting/committing/s/defintion/definition/s/gaurantees/guarantees/s/interrpted/interrupted/s/interrutps/interrupts/s/succeded/succeeded/s/unconditonally/unconditionally/Reviewed-by: Christian Brauner Acked-by: Randy Dunlap Signed-off-by: Bhaskar Chowdhury Signed-off-by: Vineet Gupta List of files: /linux-6.15/arch/arc/Makefile

993b832f - arch: arc: Remove CONFIG_OPROFILE support

Thu, 14 Jan 2021 11:35:16 +0000

arch: arc: Remove CONFIG_OPROFILE supportThe "oprofile" user-space tools don't use the kernel OPROFILE supportany more, and haven't in a long time. User-space has been converted tothe perf interfaces.Remove the old oprofile's architecture specific support.Suggested-by: Christoph Hellwig Suggested-by: Linus Torvalds Signed-off-by: Viresh Kumar Acked-by: Robert Richter Acked-by: Vineet Gupta Acked-by: William Cohen Acked-by: Al Viro Acked-by: Thomas Gleixner List of files: /linux-6.15/arch/arc/Makefile

c5e6ae56 - ARC: build: move symlink creation to arch/arc/Makefile to avoid race

Sat, 21 Nov 2020 19:36:55 +0000

ARC: build: move symlink creation to arch/arc/Makefile to avoid raceIf you run 'make uImage uImage.gz' with the parallel option, uImage.gzwill be created by two threads simultaneously.This is because arch/arc/Makefile does not specify the dependencybetween uImage and uImage.gz. Hence, GNU Make assumes they can bebuilt in parallel. One thread descends into arch/arc/boot/ to createuImage, and another to create uImage.gz.Please notice the same log is displayed twice in the following steps: $ export CROSS_COMPILE= $ make -s ARCH=arc defconfig $ make -j$(nproc) ARCH=arc uImage uImage.gz [ snip ] LD vmlinux SORTTAB vmlinux SYSMAP System.map OBJCOPY arch/arc/boot/vmlinux.bin OBJCOPY arch/arc/boot/vmlinux.bin GZIP arch/arc/boot/vmlinux.bin.gz GZIP arch/arc/boot/vmlinux.bin.gz UIMAGE arch/arc/boot/uImage.gz UIMAGE arch/arc/boot/uImage.gz Image Name: Linux-5.10.0-rc4-00003-g62f23044 Created: Sun Nov 22 02:52:26 2020 Image Type: ARC Linux Kernel Image (gzip compressed) Data Size: 2109376 Bytes = 2059.94 KiB = 2.01 MiB Load Address: 80000000 Entry Point: 80004000 Image arch/arc/boot/uImage is ready Image Name: Linux-5.10.0-rc4-00003-g62f23044 Created: Sun Nov 22 02:52:26 2020 Image Type: ARC Linux Kernel Image (gzip compressed) Data Size: 2815455 Bytes = 2749.47 KiB = 2.69 MiB Load Address: 80000000 Entry Point: 80004000This is a race between the two threads trying to write to the same filearch/arc/boot/uImage.gz. This is a potential problem that can generatea broken file.I fixed a similar problem for ARM by commit 3939f3345050 ("ARM: 8418/1:add boot image dependencies to not generate invalid images").I highly recommend to avoid such build rules that cause a race condition.Move the uImage rule to arch/arc/Makefile.Another strangeness is that arch/arc/boot/Makefile compares thetimestamps between $(obj)/uImage and $(obj)/uImage.*: $(obj)/uImage: $(obj)/uImage.$(suffix-y) @ln -sf $(notdir $<) $@ @echo ' Image $@ is ready'This does not work as expected since $(obj)/uImage is a symlink.The symlink should be created in a phony target rule.I used $(kecho) instead of echo to suppress the message'Image arch/arc/boot/uImage is ready' when the -s option is given.Signed-off-by: Masahiro Yamada Signed-off-by: Vineet Gupta List of files: /linux-6.15/arch/arc/Makefile

0cfccb3c - ARC: build: add boot_targets to PHONY

Sat, 21 Nov 2020 19:36:54 +0000

ARC: build: add boot_targets to PHONYThe top-level boot_targets (uImage and uImage.*) should be phonytargets. They just let Kbuild descend into arch/arc/boot/ and createfiles there.If a file exists in the top directory with the same name, the bootimage will not be created.You can confirm it by the following steps: $ export CROSS_COMPILE= $ make -s ARCH=arc defconfig all # vmlinux will be built $ touch uImage.gz $ make ARCH=arc uImage.gz CALL scripts/atomic/check-atomics.sh CALL scripts/checksyscalls.sh CHK include/generated/compile.h # arch/arc/boot/uImage.gz is not createdSpecify the targets as PHONY to fix this.Signed-off-by: Masahiro Yamada Signed-off-by: Vineet Gupta List of files: /linux-6.15/arch/arc/Makefile

f2712ec7 - ARC: build: add uImage.lzma to the top-level target

Sat, 21 Nov 2020 19:36:53 +0000

ARC: build: add uImage.lzma to the top-level targetarch/arc/boot/Makefile supports uImage.lzma, but you cannot do'make uImage.lzma' because the corresponding target is missingin arch/arc/Makefile. Add it.I also changed the assignment operator '+=' to ':=' since this is theonly place where we expect this variable to be set.Signed-off-by: Masahiro Yamada Signed-off-by: Vineet Gupta List of files: /linux-6.15/arch/arc/Makefile

98367209 - ARC: build: remove non-existing bootpImage from KBUILD_IMAGE

Sat, 21 Nov 2020 19:36:52 +0000

ARC: build: remove non-existing bootpImage from KBUILD_IMAGEThe deb-pkg builds for ARCH=arc fail. $ export CROSS_COMPILE= $ make -s ARCH=arc defconfig $ make ARCH=arc bindeb-pkg SORTTAB vmlinux SYSMAP System.map MODPOST Module.symvers make KERNELRELEASE=5.10.0-rc4 ARCH=arc KBUILD_BUILD_VERSION=2 -f ./Makefile intdeb-pkg sh ./scripts/package/builddeb cp: cannot stat 'arch/arc/boot/bootpImage': No such file or directory make[4]: *** [scripts/Makefile.package:87: intdeb-pkg] Error 1 make[3]: *** [Makefile:1527: intdeb-pkg] Error 2 make[2]: *** [debian/rules:13: binary-arch] Error 2 dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2 make[1]: *** [scripts/Makefile.package:83: bindeb-pkg] Error 2 make: *** [Makefile:1527: bindeb-pkg] Error 2The reason is obvious; arch/arc/Makefile sets $(boot)/bootpImage asthe default image, but there is no rule to build it.Remove the meaningless KBUILD_IMAGE assignment so it will fallbackto the default vmlinux. With this change, you can build the deb package.I removed the 'bootpImage' target as well. At best, it provides'make bootpImage' as an alias of 'make vmlinux', but I do not seemuch sense in doing so.Signed-off-by: Masahiro Yamada Signed-off-by: Vineet Gupta List of files: /linux-6.15/arch/arc/Makefile

dd7c7ab0 - ARC: [plat-eznps]: Drop support for EZChip NPS platform

Wed, 26 Aug 2020 01:37:17 +0000

ARC: [plat-eznps]: Drop support for EZChip NPS platformNPS customers are no longer doing active development, as evident fromrand config build failures reported in recent times, so drop supportfor NPS platform.Tested-by: kernel test robot Signed-off-by: Vineet Gupta List of files: /linux-6.15/arch/arc/Makefile

040ece2a - ARC: build: remove deprecated toggle for arc700 builds

Tue, 16 Jun 2020 22:14:50 +0000

ARC: build: remove deprecated toggle for arc700 buildsSigned-off-by: Vineet Gupta List of files: /linux-6.15/arch/arc/Makefile

0bdd6e74 - ARC: build: allow users to specify -mcpu

Thu, 04 Jun 2020 17:39:24 +0000

ARC: build: allow users to specify -mcpukernel build system used to add -mcpu for each ARC ISA as default.These days there are versions and varaints of ARC HS cores some of whichhave specific -mcpu options to fine tune / optimize generated code.So allow users/external build systems to specify their own -mcpuThis will be used in future patches for HSDK-4xD board support whichuses specific -mcpu to utilize dual issue scheduling of the core.Signed-off-by: Eugeniy Paltsev Signed-off-by: Vineet Gupta [abrodkin/vgupta: rewrote changelog] List of files: /linux-6.15/arch/arc/Makefile

1681baa7 - ARC: merge HAPS-HS with nSIM-HS configs

Wed, 23 Oct 2019 12:44:15 +0000

ARC: merge HAPS-HS with nSIM-HS configsStarting from nSIM 2019.06 is possible to use DW UARTinstead of ARC UART. That allows us to merge"nsim_hs" with "haps_hs" and "nsim_hs_smp" with "haps_hs_smp"with minor changes which were done in previous commits.We eliminate nsim_hs_defconfig and nsim_hs_smp_defconfigand leave haps_hs_defconfig and haps_hs_smp_defconfigwhich can be used on HAPS / nSIM / ZEBU / QEMU platformswithout additional changes in Linux kernel.For nSIM we should now use UART property values"-prop=nsim_mem-dev=uart0,kind=dwuart,base=0xf0000000"instead of previously used"-prop=nsim_mem-dev=uart0,base=0xc0fc1000""use_connect" and "irq" values of UART property remains untouched.Signed-off-by: Eugeniy Paltsev Signed-off-by: Vineet Gupta List of files: /linux-6.15/arch/arc/Makefile

15f5db60 - kbuild,arc: add CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 for ARC

Tue, 20 Aug 2019 17:09:40 +0000

kbuild,arc: add CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 for ARCarch/arc/Makefile overrides -O2 with -O3. This is the only user ofARCH_CFLAGS. There is no user of ARCH_CPPFLAGS or ARCH_AFLAGS.My plan is to remove ARCH_{CPP,A,C}FLAGS after refactoring the ARCMakefile.Currently, ARC has no way to enable -Wmaybe-uninitialized because both-O3 and -Os disable it. Enabling it will be useful for compile-testing.This commit allows allmodconfig (, which defaults to -O2) to enable it.Add CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y to all the defconfig filesin arch/arc/configs/ in order to keep the current config settings.Signed-off-by: Masahiro Yamada Acked-by: Vineet Gupta List of files: /linux-6.15/arch/arc/Makefile

75dd4747 - kbuild: remove src and obj from the top Makefile

Sat, 06 Jul 2019 03:07:11 +0000

kbuild: remove src and obj from the top MakefileReplace $(src) and $(obj) with $(srctree) and $(objtree), respectively.Signed-off-by: Masahiro Yamada List of files: /linux-6.15/arch/arc/Makefile