Changes in Makefile

ccb8ce52 - ARM: 9441/1: rust: Enable Rust support for ARMv7

Thu, 30 Jan 2025 23:03:45 +0000

ARM: 9441/1: rust: Enable Rust support for ARMv7This commit allows building ARMv7 kernels with Rust support.The rust core library expects some __eabi_... functionsthat are not implemented in the kernel.Those functions are some float operations and __aeabi_uldivmod.For now those are implemented with define_panicking_intrinsics!.This is based on the code by Sven Van Asbroeck from the originalrust branch and inspired by the AArch version by Jamie Cunliffe.I have tested the rust samples and a custom simple MMIO moduleon hardware (De1SoC FPGA + Arm A9 CPU).Tested-by: Rudraksha Gupta Reviewed-by: Alice Ryhl Acked-by: Miguel Ojeda Tested-by: Miguel Ojeda Acked-by: Ard Biesheuvel Signed-off-by: Christian Schrefl Signed-off-by: Russell King (Oracle) List of files: /linux-6.15/arch/arm/Makefile

214c0eea - kbuild: add $(objtree)/ prefix to some in-kernel build artifacts

Sun, 10 Nov 2024 01:34:30 +0000

kbuild: add $(objtree)/ prefix to some in-kernel build artifacts$(objtree) refers to the top of the output directory of kernel builds.This commit adds the explicit $(objtree)/ prefix to build artifactsneeded for building external modules.This change has no immediate impact, as the top-level Makefilecurrently defines: objtree := .This commit prepares for supporting the building of external modulesin a different directory.Signed-off-by: Masahiro Yamada Reviewed-by: Nicolas Schier List of files: /linux-6.15/arch/arm/Makefile

046322f1 - ARM: ep93xx: DT for the Cirrus ep93xx SoC platforms

Mon, 09 Sep 2024 08:10:57 +0000

ARM: ep93xx: DT for the Cirrus ep93xx SoC platformsAdd compulsory device tree support to the Cirrus ep93xx ARMv4 platform.- select PINCTRL_EP93xx- select COMMON_CLK_EP93XX, as clock driver moved out of platform code- select ARCH_HAS_RESET_CONTROLLERSelect ARM_ATAG_DTB_COMPAT to update device tree with informationabout memory passed from bootloader.We have to leave all MACH options as they are used for board checkingbefore decomp, to turn off watchdog and ethernet DMA.Tested-by: Alexander Sverdlin Signed-off-by: Nikita Shubin Tested-by: Michael Peters Reviewed-by: Andy Shevchenko Reviewed-by: Krzysztof Kozlowski Reviewed-by: Guenter Roeck Reviewed-by: Mark Brown Reviewed-by: Andy Shevchenko Reviewed-by: Linus Walleij Reviewed-by: Kris Bahnsen Reviewed-by: Andrew Lunn Reviewed-by: Sergey Shtylyov Acked-by: Miquel Raynal Acked-by: Alexander Sverdlin Acked-by: Uwe Kleine-König Acked-by: Damien Le Moal Acked-by: Sebastian Reichel Acked-by: Vinod Koul Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/arm/Makefile

cb2b7b7d - ARM: implement ARCH_HAS_KERNEL_FPU_SUPPORT

Fri, 29 Mar 2024 07:18:17 +0000

ARM: implement ARCH_HAS_KERNEL_FPU_SUPPORTARM provides an equivalent to the common kernel-mode FPU API, but in adifferent header and using different function names. Add a wrapperheader, and export CFLAGS adjustments as found in lib/raid6/Makefile.[samuel.holland@sifive.com: ARM: do not select ARCH_HAS_KERNEL_FPU_SUPPORT] Link: https://lkml.kernel.org/r/20240509013727.648600-1-samuel.holland@sifive.comLink: https://lkml.kernel.org/r/20240329072441.591471-3-samuel.holland@sifive.comSigned-off-by: Samuel Holland Reviewed-by: Christoph Hellwig Acked-by: Christian König Cc: Alex Deucher Cc: Borislav Petkov (AMD) Cc: Catalin Marinas Cc: Dave Hansen Cc: Huacai Chen Cc: Ingo Molnar Cc: Jonathan Corbet Cc: Masahiro Yamada Cc: Michael Ellerman Cc: Nathan Chancellor Cc: Nicolas Schier Cc: Palmer Dabbelt Cc: Russell King Cc: Thomas Gleixner Cc: WANG Xuerui Cc: Will Deacon Cc: Thiago Jung Bauermann Cc: Ard Biesheuvel Signed-off-by: Andrew Morton List of files: /linux-6.15/arch/arm/Makefile

99497df5 - ARM: qcom: merge remaining subplatforms into sensible Kconfig entry

Sat, 16 Dec 2023 16:27:00 +0000

ARM: qcom: merge remaining subplatforms into sensible Kconfig entryThree remaining Qualcomm platforms have special handling of theTEXT_OFFSET to reserve the memory at the beginnig of the system RAM, seethe commit 9e775ad19f52 ("ARM: 7012/1: Set proper TEXT_OFFSET for newerMSMs"). This is required for older platforms like IPQ40xx, MSM8x60,MSM8960 and APQ8064 and is compatible with other 32-bit Qualcommplatforms.Signed-off-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20231216162700.863456-4-dmitry.baryshkov@linaro.orgSigned-off-by: Bjorn Andersson List of files: /linux-6.15/arch/arm/Makefile

671c08ec - ARM: mach-nspire: Rework support and directory structure

Mon, 13 Nov 2023 14:43:59 +0000

ARM: mach-nspire: Rework support and directory structureHaving a platform need a mach-* directory should be seen as a negative,it means the platform needs special non-standard handling. ARM64 supportdoes not allow mach-* directories at all. While we may not get to thatgiven all the non-standard architectures we support, we should still tryto get as close as we can and reduce the number of mach directories.The mach-nspire/ directory and files, provides just one "feature":having the kernel print the machine name if the DTB does not also containa "model" string (which they always do). To reduce the number of mach-*directories let's do without that feature and remove this directory.NOTE: The default l2c_aux_mask is now ~0 but these devices never havethis type of cache controller so this is safe.Signed-off-by: Andrew Davis Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/arm/Makefile

ae73dadb - ARM: mach-sunplus: Rework support and directory structure

Mon, 13 Nov 2023 14:43:57 +0000

ARM: mach-sunplus: Rework support and directory structureHaving a platform need a mach-* directory should be seen as a negative,it means the platform needs special non-standard handling. ARM64 supportdoes not allow mach-* directories at all. While we may not get to thatgiven all the non-standard architectures we support, we should still tryto get as close as we can and reduce the number of mach directories.The mach-sunplus/ directory and files, provides just one "feature":having the kernel print the machine name if the DTB does not also containa "model" string (which they always do). To reduce the number of mach-*directories let's do without that feature and remove this directory.NOTE: The default l2c_aux_mask is now ~0 but these devices never havethis type of cache controller so this is safe.Signed-off-by: Andrew Davis Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/arm/Makefile

00e58c36 - ARM: mach-airoha: Rework support and directory structure

Mon, 13 Nov 2023 14:43:56 +0000

ARM: mach-airoha: Rework support and directory structureHaving a platform need a mach-* directory should be seen as a negative,it means the platform needs special non-standard handling. ARM64 supportdoes not allow mach-* directories at all. While we may not get to thatgiven all the non-standard architectures we support, we should still tryto get as close as we can and reduce the number of mach directories.The mach-airoha/ directory, and files within, provide just one "feature":having the kernel print the machine name if the DTB does not also containa "model" string (which they always do). To reduce the number of mach-*directories let's do without that feature and remove this directory.It also seems there was a copy/paste error and the "MEDIATEK_DT"name was re-used in the DT_MACHINE_START macro. This may have causedconflicts if this was built in a multi-arch configuration.NOTE: The default l2c_aux_mask is now ~0 but these devices never havethis type of cache controller so this is safe.Signed-off-by: Andrew Davis Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/arm/Makefile

dcfbe025 - ARM: mach-moxart: Move MOXA ART support into Kconfig.platforms

Mon, 13 Nov 2023 14:43:55 +0000

ARM: mach-moxart: Move MOXA ART support into Kconfig.platformsThis removes the need for a dedicated Kconfig and empty mach directory.Signed-off-by: Andrew Davis Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/arm/Makefile

56769ba4 - kbuild: unify vdso_install rules

Sat, 14 Oct 2023 10:54:35 +0000

kbuild: unify vdso_install rulesCurrently, there is no standard implementation for vdso_install,leading to various issues: 1. Code duplication Many architectures duplicate similar code just for copying files to the install destination. Some architectures (arm, sparc, x86) create build-id symlinks, introducing more code duplication. 2. Unintended updates of in-tree build artifacts The vdso_install rule depends on the vdso files to install. It may update in-tree build artifacts. This can be problematic, as explained in commit 19514fc665ff ("arm, kbuild: make "make install" not depend on vmlinux"). 3. Broken code in some architectures Makefile code is often copied from one architecture to another without proper adaptation. 'make vdso_install' for parisc does not work. 'make vdso_install' for s390 installs vdso64, but not vdso32.To address these problems, this commit introduces a generic vdso_installrule.Architectures that support vdso_install need to define vdso-install-yin arch/*/Makefile. vdso-install-y lists the files to install.For example, arch/x86/Makefile looks like this: vdso-install-$(CONFIG_X86_64) += arch/x86/entry/vdso/vdso64.so.dbg vdso-install-$(CONFIG_X86_X32_ABI) += arch/x86/entry/vdso/vdsox32.so.dbg vdso-install-$(CONFIG_X86_32) += arch/x86/entry/vdso/vdso32.so.dbg vdso-install-$(CONFIG_IA32_EMULATION) += arch/x86/entry/vdso/vdso32.so.dbgThese files will be installed to $(MODLIB)/vdso/ with the .dbg suffix,if exists, stripped away.vdso-install-y can optionally take the second field after the colonseparator. This is needed because some architectures install a vdsofile as a different base name.The following is a snippet from arch/arm64/Makefile. vdso-install-$(CONFIG_COMPAT_VDSO) += arch/arm64/kernel/vdso32/vdso.so.dbg:vdso32.soThis will rename vdso.so.dbg to vdso32.so during installation. If sucharchitectures change their implementation so that the base names match,this workaround will go away.Signed-off-by: Masahiro Yamada Acked-by: Sven Schnelle # s390Reviewed-by: Nicolas Schier Reviewed-by: Guo Ren Acked-by: Helge Deller # pariscAcked-by: Catalin Marinas Acked-by: Russell King (Oracle) List of files: /linux-6.15/arch/arm/Makefile

5ca26530 - ARM: oxnas: remove OXNAS support

Mon, 03 Apr 2023 07:42:19 +0000

ARM: oxnas: remove OXNAS supportDue to lack of maintainance and stall of development for a few years now,and since no new features will ever be added upstream, remove supportfor OX810 and OX820 ARM support.Acked-by: Linus Walleij Acked-by: Arnd Bergmann Acked-by: Daniel Golle Signed-off-by: Neil Armstrong Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/arm/Makefile

e9faf9b0 - ARM: add multi_v7_lpae_defconfig

Tue, 24 Jan 2023 11:02:13 +0000

ARM: add multi_v7_lpae_defconfigThe only missing configuration option preventing us from usingmulti_v7_defconfig with the Raspberry Pi 4 is ARM_LPAE. It's needed asthe PCIe controller found on the SoC depends on 64bit addressing, yetcan't be included as not all v7 boards support LPAE.Introduce multi_v7_lpae_defconfig, built off multi_v7_defconfig, which willavoid us having to duplicate and maintain multiple similar configurations.Needless to say the Raspberry Pi 4 is not the only platform that canbenefit from this new configuration.Signed-off-by: Nicolas Saenz Julienne Signed-off-by: Alexander Stein Link: https://lore.kernel.org/r/20230124110213.3221264-11-alexander.stein@ew.tq-group.comSigned-off-by: Arnd Bergmann List of files: /linux-6.15/arch/arm/Makefile

2f62847c - ARM: 9287/1: Reduce thumb2 definition to crypto files that require it

Wed, 18 Jan 2023 19:29:02 +0000

ARM: 9287/1: Reduce __thumb2__ definition to crypto files that require itCommit 1d2e9b67b001 ("ARM: 9265/1: pass -march= only to compiler") addeda __thumb2__ define to ASFLAGS to avoid build errors in the crypto code,which relies on __thumb2__ for preprocessing. Commit 59e2cf8d21e0 ("ARM:9275/1: Drop '-mthumb' from AFLAGS_ISA") followed up on this by removing-mthumb from AFLAGS so that __thumb2__ would not be defined when thedefault target was ARMv7 or newer.Unfortunately, the second commit's fix assumes that the toolchaindefaults to -mno-thumb / -marm, which is not the case for Debian'sarm-linux-gnueabihf target, which defaults to -mthumb: $ echo | arm-linux-gnueabihf-gcc -dM -E - | grep __thumb #define __thumb2__ 1 #define __thumb__ 1This target is used by several CI systems, which will still seeredefined macro warnings, despite '-mthumb' not being present in theflags: : warning: "__thumb2__" redefined : note: this is the location of the previous definitionRemove the global AFLAGS __thumb2__ define and move it to the cryptofolder where it is required by the imported OpenSSL algorithms; the restof the kernel should use the internal CONFIG_THUMB2_KERNEL symbol toknow whether or not Thumb2 is being used or not. Be sure that __thumb2__is undefined first so that there are no macro redefinition warnings.Link: https://github.com/ClangBuiltLinux/linux/issues/1772Reported-by: "kernelci.org bot" Suggested-by: Ard Biesheuvel Signed-off-by: Nathan Chancellor Reviewed-by: Nick Desaulniers Tested-by: Nick Desaulniers Fixes: 59e2cf8d21e0 ("ARM: 9275/1: Drop '-mthumb' from AFLAGS_ISA")Fixes: 1d2e9b67b001 ("ARM: 9265/1: pass -march= only to compiler")Signed-off-by: Russell King (Oracle) List of files: /linux-6.15/arch/arm/Makefile

61b7f892 - ARM: s3c: remove all s3c24xx support

Thu, 29 Sep 2022 13:33:15 +0000

ARM: s3c: remove all s3c24xx supportThe platform was deprecated in commit 6a5e69c7ddea ("ARM: s3c: markas deprecated and schedule removal") and can be removed. This includesall files that are exclusively for s3c24xx and not shared with s3c64xx,as well as the glue logic in Kconfig and the maintainer file entries.Cc: Arnaud Patard Cc: Ben Dooks Cc: Christer Weinigel Cc: Guillaume GOURAT Cc: Heiko Stuebner Cc: Simtec Linux Team Cc: openmoko-kernel@lists.openmoko.orgAcked-by: Heiko Stuebner Acked-by: Krzysztof Kozlowski Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/arm/Makefile

cdc3116f - ARM: 9285/1: remove meaningless arch/arm/mach-rda/Makefile

Tue, 10 Jan 2023 08:01:29 +0000

ARM: 9285/1: remove meaningless arch/arm/mach-rda/MakefileYou do not need to put Makefile if there is nothing to compile.Signed-off-by: Masahiro Yamada Signed-off-by: Russell King (Oracle) List of files: /linux-6.15/arch/arm/Makefile

b91a69d1 - ARM: iop32x: remove the platform

Thu, 29 Sep 2022 13:31:18 +0000

ARM: iop32x: remove the platformThis was marked as unused in 5.19 and can now be removedCc: Lennert Buytenhek Cc: Martin Michlmayr Acked-by: Dan Williams Acked-by: Wolfram Sang # for I2CSigned-off-by: Arnd Bergmann List of files: /linux-6.15/arch/arm/Makefile

e73307b9 - ARM: cns3xxx: remove entire platform

Thu, 29 Sep 2022 13:29:56 +0000

ARM: cns3xxx: remove entire platformcns3xxx was marked as unused a while ago, and gets removedentirely now.Acked-by: Krzysztof Hałasa Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/arm/Makefile

59e2cf8d - ARM: 9275/1: Drop '-mthumb' from AFLAGS_ISA

Mon, 21 Nov 2022 19:21:21 +0000

ARM: 9275/1: Drop '-mthumb' from AFLAGS_ISAWhen building with CONFIG_THUMB2_KERNEL=y + a version of clang fromDebian using CROSS_COMPILE=arm-linux-gnueabihf-, the following warningoccurs frequently: :383:9: warning: '__thumb2__' macro redefined [-Wmacro-redefined] #define __thumb2__ 2 ^ :353:9: note: previous definition is here #define __thumb2__ 1 ^ 1 warning generated.Debian carries a downstream patch that changes the default CPU of thearm-linux-gnueabihf target from 'arm1176jzf-s' (v6) to 'cortex-a7' (v7).As a result, '-mthumb' defines both '__thumb__' and '__thumb2__'. Thedefine of '__thumb2__' via the command line was purposefully added tocatch a situation like this.In a similar vein as commit 26b12e084bce ("ARM: 9264/1: only use-mtp=cp15 for the compiler"), do not add '-mthumb' to AFLAGS_ISA, as itis already passed to the assembler via '-Wa,-mthumb' and '__thumb2__' isalready defined for preprocessing.Link: https://salsa.debian.org/pkg-llvm-team/llvm-toolchain/-/raw/622dbcbd40b316ed3905a2d25d9623544a06e6b1/debian/patches/930008-arm.diffFixes: 1d2e9b67b001 ("ARM: 9265/1: pass -march= only to compiler")Reported-by: "kernelci.org bot" Reviewed-by: Nick Desaulniers Tested-by: Nick Desaulniers Reviewed-by: Ard Biesheuvel Signed-off-by: Nathan Chancellor Signed-off-by: Russell King (Oracle) List of files: /linux-6.15/arch/arm/Makefile

1d2e9b67 - ARM: 9265/1: pass -march= only to compiler

Mon, 24 Oct 2022 19:46:05 +0000

ARM: 9265/1: pass -march= only to compilerWhen both -march= and -Wa,-march= are specified for assembler orassembler-with-cpp sources, GCC and Clang will prefer the -Wa,-march=value but Clang will warn that -march= is unused.warning: argument unused during compilation: '-march=armv6k'[-Wunused-command-line-argument]This is the top group of warnings we observe when using clang toassemble the kernel via `ARCH=arm make LLVM=1`.Split the arch-y make variable into two, so that -march= flags only getpassed to the compiler, not the assembler. -D flags are added toKBUILD_CPPFLAGS which is used for both C and assembler-with-cpp sources.Clang is trying to warn that it doesn't support different values for-march= and -Wa,-march= (like GCC does, but the kernel doesn't need this)though the value of the preprocessor define __thumb2__ is based on-march=. Make sure to re-set __thumb2__ via -D flag for assemblersources now that we're no longer passing -march= to the assembler. Setit to a different value than the preprocessor would for -march= in case-march= gets accidentally re-added to KBUILD_AFLAGS in the future.Thanks to Ard and Nathan for this suggestion.Link: https://github.com/ClangBuiltLinux/linux/issues/1315Link: https://github.com/ClangBuiltLinux/linux/issues/1587Link: https://github.com/llvm/llvm-project/issues/55656Suggested-by: Ard Biesheuvel Suggested-by: Nathan Chancellor Reviewed-by: Nathan Chancellor Tested-by: Nathan Chancellor Signed-off-by: Nick Desaulniers Signed-off-by: Russell King (Oracle) List of files: /linux-6.15/arch/arm/Makefile

26b12e08 - ARM: 9264/1: only use -mtp=cp15 for the compiler

Mon, 24 Oct 2022 19:45:17 +0000

ARM: 9264/1: only use -mtp=cp15 for the compilerAvoids an error from the assembler for CONFIG_THUMB2 kernels:clang-15: error: hardware TLS register is not supported for the thumbv4tsub-architectureThis flag only makes sense to pass to the compiler, not the assembler.Perhaps CFLAGS_ABI can be renamed to CPPFLAGS_ABI to reflect that theywill be passed to both the compiler and assembler for sources thatrequire pre-processing.Reviewed-by: Nathan Chancellor Signed-off-by: Nick Desaulniers Signed-off-by: Russell King (Oracle) List of files: /linux-6.15/arch/arm/Makefile