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* Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds2019-09-221-8/+14
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ARM updates from Russell King: - fix various clang build and cppcheck issues - switch ARM to use new common outgoing-CPU-notification code - add some additional explanation about the boot code - kbuild "make clean" fixes - get rid of another "(____ptrval____)", this time for the VDSO code - avoid treating cache maintenance faults as a write - add a frame pointer unwinder implementation for clang - add EDAC support for Aurora L2 cache - improve robustness of adjust_lowmem_bounds() finding the bounds of lowmem. - add reset control for AMBA primecell devices * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (24 commits) ARM: 8906/1: drivers/amba: add reset control to amba bus probe ARM: 8905/1: Emit __gnu_mcount_nc when using Clang 10.0.0 or newer ARM: 8904/1: skip nomap memblocks while finding the lowmem/highmem boundary ARM: 8903/1: ensure that usable memory in bank 0 starts from a PMD-aligned address ARM: 8891/1: EDAC: armada_xp: Add support for more SoCs ARM: 8888/1: EDAC: Add driver for the Marvell Armada XP SDRAM and L2 cache ECC ARM: 8892/1: EDAC: Add missing debugfs_create_x32 wrapper ARM: 8890/1: l2x0: add marvell,ecc-enable property for aurora ARM: 8889/1: dt-bindings: document marvell,ecc-enable binding ARM: 8886/1: l2x0: support parity-enable/disable on aurora ARM: 8885/1: aurora-l2: add defines for parity and ECC registers ARM: 8887/1: aurora-l2: add prefix to MAX_RANGE_SIZE ARM: 8902/1: l2c: move cache-aurora-l2.h to asm/hardware ARM: 8900/1: UNWINDER_FRAME_POINTER implementation for Clang ARM: 8898/1: mm: Don't treat faults reported from cache maintenance as writes ARM: 8896/1: VDSO: Don't leak kernel addresses ARM: 8895/1: visit mach-* and plat-* directories when cleaning ARM: 8894/1: boot: Replace open-coded nop with macro ARM: 8893/1: boot: Explain the 8 nops ARM: 8876/1: fix O= building with CONFIG_FPE_FASTFPE ...
| * ARM: 8905/1: Emit __gnu_mcount_nc when using Clang 10.0.0 or newerNathan Chancellor2019-09-101-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, multi_v7_defconfig + CONFIG_FUNCTION_TRACER fails to build with clang: arm-linux-gnueabi-ld: kernel/softirq.o: in function `_local_bh_enable': softirq.c:(.text+0x504): undefined reference to `mcount' arm-linux-gnueabi-ld: kernel/softirq.o: in function `__local_bh_enable_ip': softirq.c:(.text+0x58c): undefined reference to `mcount' arm-linux-gnueabi-ld: kernel/softirq.o: in function `do_softirq': softirq.c:(.text+0x6c8): undefined reference to `mcount' arm-linux-gnueabi-ld: kernel/softirq.o: in function `irq_enter': softirq.c:(.text+0x75c): undefined reference to `mcount' arm-linux-gnueabi-ld: kernel/softirq.o: in function `irq_exit': softirq.c:(.text+0x840): undefined reference to `mcount' arm-linux-gnueabi-ld: kernel/softirq.o:softirq.c:(.text+0xa50): more undefined references to `mcount' follow clang can emit a working mcount symbol, __gnu_mcount_nc, when '-meabi gnu' is passed to it. Until r369147 in LLVM, this was broken and caused the kernel not to boot with '-pg' because the calling convention was not correct. Always build with '-meabi gnu' when using clang but ensure that '-pg' (which is added with CONFIG_FUNCTION_TRACER and its prereq CONFIG_HAVE_FUNCTION_TRACER) cannot be added with it unless this is fixed (which means using clang 10.0.0 and newer). Link: https://github.com/ClangBuiltLinux/linux/issues/35 Link: https://bugs.llvm.org/show_bug.cgi?id=33845 Link: https://github.com/llvm/llvm-project/commit/16fa8b09702378bacfa3d07081afe6b353b99e60 Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
| * ARM: 8900/1: UNWINDER_FRAME_POINTER implementation for ClangNathan Huckleberry2019-08-291-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The stackframe setup when compiled with clang is different. Since the stack unwinder expects the gcc stackframe setup it fails to print backtraces. This patch adds support for the clang stackframe setup. Link: https://github.com/ClangBuiltLinux/linux/issues/35 Cc: clang-built-linux@googlegroups.com Suggested-by: Tri Vo <trong@google.com> Signed-off-by: Nathan Huckleberry <nhuck@google.com> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
| * ARM: 8895/1: visit mach-* and plat-* directories when cleaningMasahiro Yamada2019-08-231-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | When you run "make clean" for arm, it never visits mach-* or plat-* directories because machine-y and plat-y are just empty. When cleaning, all machine, plat directories are accumulated to machine-, plat-, respectively. So, let's pass them to core- to clean up those directories. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
| * ARM: 8876/1: fix O= building with CONFIG_FPE_FASTFPEMasahiro Yamada2019-08-231-7/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To use Fastfpe, a user is supposed to enable CONFIG_FPE_FASTFPE and put downstream source files into arch/arm/fastfpe/. It is not working for O= build because $(wildcard arch/arm/fastfpe) checks if it exists in $(objtree), not in $(srctree). Add the $(srctree)/ prefix to fix it. While I was here, I slightly refactored the code. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
* | Merge tag 'kbuild-v5.4' of ↵Linus Torvalds2019-09-201-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - add modpost warn exported symbols marked as 'static' because 'static' and EXPORT_SYMBOL is an odd combination - break the build early if gold linker is used - optimize the Bison rule to produce .c and .h files by a single pattern rule - handle PREEMPT_RT in the module vermagic and UTS_VERSION - warn CONFIG options leaked to the user-space except existing ones - make single targets work properly - rebuild modules when module linker scripts are updated - split the module final link stage into scripts/Makefile.modfinal - fix the missed error code in merge_config.sh - improve the error message displayed on the attempt of the O= build in unclean source tree - remove 'clean-dirs' syntax - disable -Wimplicit-fallthrough warning for Clang - add CONFIG_CC_OPTIMIZE_FOR_SIZE_O3 for ARC - remove ARCH_{CPP,A,C}FLAGS variables - add $(BASH) to run bash scripts - change *CFLAGS_<basetarget>.o to take the relative path to $(obj) instead of the basename - stop suppressing Clang's -Wunused-function warnings when W=1 - fix linux/export.h to avoid genksyms calculating CRC of trimmed exported symbols - misc cleanups * tag 'kbuild-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (63 commits) genksyms: convert to SPDX License Identifier for lex.l and parse.y modpost: use __section in the output to *.mod.c modpost: use MODULE_INFO() for __module_depends export.h, genksyms: do not make genksyms calculate CRC of trimmed symbols export.h: remove defined(__KERNEL__), which is no longer needed kbuild: allow Clang to find unused static inline functions for W=1 build kbuild: rename KBUILD_ENABLE_EXTRA_GCC_CHECKS to KBUILD_EXTRA_WARN kbuild: refactor scripts/Makefile.extrawarn merge_config.sh: ignore unwanted grep errors kbuild: change *FLAGS_<basetarget>.o to take the path relative to $(obj) modpost: add NOFAIL to strndup modpost: add guid_t type definition kbuild: add $(BASH) to run scripts with bash-extension kbuild: remove ARCH_{CPP,A,C}FLAGS kbuild,arc: add CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 for ARC kbuild: Do not enable -Wimplicit-fallthrough for clang for now kbuild: clean up subdir-ymn calculation in Makefile.clean kbuild: remove unneeded '+' marker from cmd_clean kbuild: remove clean-dirs syntax kbuild: check clean srctree even earlier ...
| * | kbuild: rebuild modules when module linker scripts are updatedMasahiro Yamada2019-08-211-1/+1
| |/ | | | | | | | | | | | | Currently, the timestamp of module linker scripts are not checked. Add them to the dependency of modules so they are correctly rebuilt. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
* | Merge tag 'aspeed-5.4-arch' of ↵Arnd Bergmann2019-09-031-0/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/joel/aspeed into arm/soc ASPEED architecture updates for 5.4 This adds support for the new ASPEED AST2600 BMC SoC. * tag 'aspeed-5.4-arch' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/aspeed: ARM: aspeed: Enable SMP boot ARM: aspeed: Add ASPEED AST2600 architecture ARM: aspeed: Select timer in each SoC dt-bindings: arm: cpus: Add ASPEED SMP Link: https://lore.kernel.org/r/CACPK8Xc1aSp5fXL3cEzC9SJsCXG2JwsSPpQrW3a09dkvhCyHHA@mail.gmail.com Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| * | ARM: aspeed: Enable SMP bootJoel Stanley2019-08-251-0/+1
| |/ | | | | | | | | | | | | This brings the secondary CPU into Linux. It depends on the setup performed by ASPEED's u-boot. Signed-off-by: Joel Stanley <joel@jms.id.au>
* | ARM: iop32x: merge everything into mach-iop32x/Arnd Bergmann2019-08-141-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Various bits of iop32x are now in their traditional locations in plat-iop, mach-iop/include/mach/ and in include/asm/mach/hardware. As nothing outside of the iop32x mach code references these any more, this can all be moved into one place now. The only remaining things in the include/mach/ directory are now the NR_IRQS definition, the entry-macros.S file and the the decompressor uart access. After the irqchip code has been converted to SPARSE_IRQ and GENERIC_IRQ_MULTI_HANDLER, it can be moved to ARCH_MULTIPLATFORM. Link: https://lore.kernel.org/r/20190809163334.489360-7-arnd@arndb.de Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* | ARM: remove Intel iop33x and iop13xx supportArnd Bergmann2019-08-141-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are three families of IOP machines we support in Linux: iop32x (which includes EP80219), iop33x and iop13xx (aka IOP34x aka WP8134x). All products we support in the kernel are based on the first of these, iop32x, the other families only ever supported the Intel reference boards but no actual machine anyone could ever buy. While one could clearly make them all three work in a single kernel with some work, this takes the easy way out, removing the later two platforms entirely, under the assumption that there are no remaining users. Earlier versions of OpenWRT and Debian both had support for iop32x but not the others, and they both dropped iop32x as well in their 2015 releases. Link: https://lore.kernel.org/r/20190809163334.489360-1-arnd@arndb.de Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Wolfram Sang <wsa@the-dreams.de> # for I2C parts Acked-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Martin Michlmayr <tbm@cyrius.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* | ARM: remove w90x900 platformArnd Bergmann2019-08-141-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This removes the old Winbond w90x900 platform, also known as Nuvoton NUC900. Wan Zongshun originally contributed the port and maintained it since then. From all I can tell, this platform is no longer being used with modern kernels, based on various indications: - The supported chips (nuc910/950/960) are no longer marketed by the manufacturer - Newer chips from the same family (nuc97x, nuc980, n329x) that are still marketed have Linux BSPs but those were never submitted for upstream inclusion. - The last patch from the platform maintainer was in 2011. - All patches to w90x900 platform specific files afterwards are cleanups that were apparently done without access to test hardware. - Both the website and the email address listed in the MAINTAINERS have become unreachable. Link: https://lore.kernel.org/r/20190809202749.742267-17-arnd@arndb.de Cc: "Wanzongshun (Vincent)" <wanzongshun@huawei.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* | ARM: remove ks8695 platformArnd Bergmann2019-08-141-1/+0
|/ | | | | | | | | | | | | | | | | | | | ks8695 is an older SoC originally made by Kendin, which was later acquired by Micrel, and subsequently by Microchip. The platform port was originally contributed by Andrew Victor and Ben Dooks, and later maintained by Greg Ungerer. When I recently submitted cleanups, but Greg noted that the platform no longer boots and nobody is using it any more, we decided to remove it. Link: https://lore.kernel.org/r/20190809202749.742267-2-arnd@arndb.de Cc: Andrew Victor <linux@maxim.org.za> Acked-by: Ben Dooks <ben-linux@fluff.org> Link: https://wikidevi.com/wiki/Micrel Link: https://lore.kernel.org/linux-arm-kernel/2bc41895-d4f9-896c-0726-0b2862fcbf25@kernel.org/ Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Greg Ungerer <gerg@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* ARM: delete netx machineLinus Walleij2019-05-221-1/+0
| | | | | | | | | | | | | | | | | After discussing with the subarch maintainers and Hilscher, we concluded that the netx subarchitecture (Netx 100/500) is no longer maintained or tested, and noone will miss it if we delete it. So delete it. There is a newer Netx 4000 architecture which we may see included at some point, but this will be supported using the standard multiplatform and devicetree mechanisms and is easier to develop from scratch. Cc: Michael Trensch <MTrensch@hilscher.com> Acked-By: Robert Schwebel <r.schwebel@pengutronix.de> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds2019-05-161-2/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ARM updates from Russell King: "ARM development updates: - more unified assembly conversions for clang - drop obsolete -mauto-it assembler option - remove arm_memory_present in preference to the generic version - remove unused asm/limits.h header - vdso linker update We tried to make the assembler warn if unified syntax was not used, but unfortunately older versions of GCC warn, so the commit had to be reverted" * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: Revert "ARM: 8846/1: warn if divided syntax assembler is used" ARM: 8858/1: vdso: use $(LD) instead of $(CC) to link VDSO ARM: 8855/1: remove unused <asm/limits.h> ARM: 8850/1: use memblocks_present ARM: 8854/1: drop -mauto-it ARM: 8846/1: warn if divided syntax assembler is used ARM: 8853/1: drop WASM to work around LLVM issue ARM: 8852/1: uaccess: use unified assembler language syntax ARM: 8851/1: add TUSERCOND() macro for conditional postfix
| * Revert "ARM: 8846/1: warn if divided syntax assembler is used"Russell King2019-05-161-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit e8c24bbda7d5eba6df5ca45e5462fd3f96b8f217. GCC 4.7, which is still permitted, emits code using the original syntax. This means we end up with lots of assembler warnings when building with a currently-supported version of gcc. Revert the commit (with fixups to keep the follow-on -mauto-it change) to avoid these warnings. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
| * ARM: 8854/1: drop -mauto-itStefan Agner2019-04-231-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The assembler option -mauto-it is no longer a valid option. The last remaining references have been removed from the documentation in July 2009 [0]. The currently supported binutils version is 2.20 (released in September 2009) or higher where gas supports -mimplicit-it=always. Drop the fallback to -mauto-it and use -mimplicit-it=always only. [0] https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=529707530657a333a304c651c808ea630c955223 Signed-off-by: Stefan Agner <stefan@agner.ch> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
| * ARM: 8846/1: warn if divided syntax assembler is usedStefan Agner2019-04-231-5/+2
| | | | | | | | | | | | | | | | | | | | Remove the -mno-warn-deprecated assembler flag to make sure the GNU assembler warns in case non-unified syntax is used. Signed-off-by: Stefan Agner <stefan@agner.ch> Acked-by: Nicolas Pitre <nico@linaro.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
* | firmware: Move Trusted Foundations supportThierry Reding2019-04-171-1/+0
|/ | | | | | | | Move the Trusted Foundations support out of arch/arm/firmware and into drivers/firmware where most other firmware support implementations are located. Signed-off-by: Thierry Reding <treding@nvidia.com>
* Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds2019-03-151-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ARM updates from Russell King: - An improvement from Ard Biesheuvel, who noted that the identity map setup was taking a long time due to flush_cache_louis(). - Update a comment about dma_ops from Wolfram Sang. - Remove use of "-p" with ld, where this flag has been a no-op since 2004. - Remove the printing of the virtual memory layout, which is no longer useful since we hide pointers. - Correct SCU help text. - Remove legacy TWD registration method. - Add pgprot_device() implementation for mapping PCI sysfs resource files. - Initialise PFN limits earlier for kmemleak. - Fix argument count to match macro definition (affects clang builds) - Use unified assembler language almost everywhere for clang, and other clang improvements (from Stefan Agner, Nathan Chancellor). - Support security extension for noMMU and other noMMU cleanups (from Vladimir Murzin). - Remove unnecessary SMP bringup code (which was incorrectly copy'n' pasted from the ARM platform implementations) and remove it from the arch code to discourge further copys of it appearing. - Add Cortex A9 erratum preventing kexec working on some SoCs. - AMBA bus identification updates from Mike Leach. - More use of raw spinlocks to avoid -RT kernel issues (from Yang Shi and Sebastian Andrzej Siewior). - MCPM hyp/svc mode mismatch fixes from Marek Szyprowski. * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (32 commits) ARM: 8849/1: NOMMU: Fix encodings for PMSAv8's PRBAR4/PRLAR4 ARM: 8848/1: virt: Align GIC version check with arm64 counterpart ARM: 8847/1: pm: fix HYP/SVC mode mismatch when MCPM is used ARM: 8845/1: use unified assembler in c files ARM: 8844/1: use unified assembler in assembly files ARM: 8843/1: use unified assembler in headers ARM: 8841/1: use unified assembler in macros ARM: 8840/1: use a raw_spinlock_t in unwind ARM: 8839/1: kprobe: make patch_lock a raw_spinlock_t ARM: 8837/1: coresight: etmv4: Update ID register table to add UCI support ARM: 8836/1: drivers: amba: Update component matching to use the CoreSight UCI values. ARM: 8838/1: drivers: amba: Updates to component identification for driver matching. ARM: 8833/1: Ensure that NEON code always compiles with Clang ARM: avoid Cortex-A9 livelock on tight dmb loops ARM: smp: remove arch-provided "pen_release" ARM: actions: remove boot_lock and pen_release ARM: oxnas: remove CPU hotplug implementation ARM: qcom: remove unnecessary boot_lock ARM: 8832/1: NOMMU: Limit visibility for CONFIG_FLASH_{MEM_BASE,SIZE} ARM: 8831/1: NOMMU: pmsa-v8: remove unneeded semicolon ...
| * ARM: 8819/1: Remove '-p' from LDFLAGSNathan Chancellor2019-02-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This option is not supported by lld: ld.lld: error: unknown argument: -p This has been a no-op in binutils since 2004 (see commit dea514f51da1 in that tree). Given that the lowest officially supported of binutils for the kernel is 2.20, which was released in 2009, nobody needs this flag around so just remove it. Commit 1a381d4a0a9a ("arm64: remove no-op -p linker flag") did the same for arm64. Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Nicolas Pitre <nico@linaro.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
* | ARM: milbeaut: Add basic support for Milbeaut m10v SoCSugaya Taichi2019-03-011-0/+1
|/ | | | | | | | | | This adds the basic M10V SoC support under arch/arm. Since all cores are activated in the custom bootloader before booting linux, it is necessary to wait for the secondary-cores using cpu-enable- method and special sram. Signed-off-by: Sugaya Taichi <sugaya.taichi@socionext.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* Merge tag 'armsoc-late' of ↵Linus Torvalds2019-01-051-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull more ARM SoC updates from Olof Johansson: "A few updates that we merged late but are low risk for regressions for other platforms (and a few other straggling patches): - I mis-tagged the 'drivers' branch, and missed 3 patches. Merged in here. They're for a driver for the PL353 SRAM controller and a build fix for the qualcomm scm driver. - A new platform, RDA Micro RDA8810PL (Cortex-A5 w/ integrated Vivante GPU, 256MB RAM, Wifi). This includes some acked platform-specific drivers (serial, etc). This also include DTs for two boards with this SoC, OrangePi 2G and OrangePi i86. - i.MX8 is another new platform (NXP, 4x Cortex-A53 + Cortex-M4, 4K video playback offload). This is the first i.MX 64-bit SoC. - Some minor updates to Samsung boards (adding a few peripherals in DTs). - Small rework for SMP bootup on STi platforms. - A couple of TEE driver fixes. - A couple of new config options (bcm2835 thermal, Uniphier MDMAC) enabled in defconfigs" * tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (27 commits) ARM: multi_v7_defconfig: enable CONFIG_UNIPHIER_MDMAC arm64: defconfig: Re-enable bcm2835-thermal driver MAINTAINERS: Add entry for RDA Micro SoC architecture tty: serial: Add RDA8810PL UART driver ARM: dts: rda8810pl: Add interrupt support for UART dt-bindings: serial: Document RDA Micro UART ARM: dts: rda8810pl: Add timer support ARM: dts: Add devicetree for OrangePi i96 board ARM: dts: Add devicetree for OrangePi 2G IoT board ARM: dts: Add devicetree for RDA8810PL SoC ARM: Prepare RDA8810PL SoC dt-bindings: arm: Document RDA8810PL and reference boards dt-bindings: Add RDA Micro vendor prefix ARM: sti: remove pen_release and boot_lock arm64: dts: exynos: Add Bluetooth chip to TM2(e) boards arm64: dts: imx8mq-evk: enable watchdog arm64: dts: imx8mq: add watchdog devices MAINTAINERS: add i.MX8 DT path to i.MX architecture arm64: add support for i.MX8M EVK board arm64: add basic DTS for i.MX8MQ ...
| * ARM: Prepare RDA8810PL SoCAndreas Färber2018-12-311-0/+1
| | | | | | | | | | | | | | | | | | Introduce ARCH_RDA and mach-rda for RDA Micro SoCs. Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Olof Johansson <olof@lixom.net>
* | ARM: smp: add support for per-task stack canariesArd Biesheuvel2018-12-121-0/+12
|/ | | | | | | | | | | | | | | | | | | | | | | | | | On ARM, we currently only change the value of the stack canary when switching tasks if the kernel was built for UP. On SMP kernels, this is impossible since the stack canary value is obtained via a global symbol reference, which means a) all running tasks on all CPUs must use the same value b) we can only modify the value when no kernel stack frames are live on any CPU, which is effectively never. So instead, use a GCC plugin to add a RTL pass that replaces each reference to the address of the __stack_chk_guard symbol with an expression that produces the address of the 'stack_canary' field that is added to struct thread_info. This way, each task will use its own randomized value. Cc: Russell King <linux@armlinux.org.uk> Cc: Kees Cook <keescook@chromium.org> Cc: Emese Revfy <re.emese@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Laura Abbott <labbott@redhat.com> Cc: kernel-hardening@lists.openwall.com Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Kees Cook <keescook@chromium.org>
* Merge tag 'devicetree-for-4.20' of ↵Linus Torvalds2018-10-261-19/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull Devicetree updates from Rob Herring: "A bit bigger than normal as I've been busy this cycle. There's a few things with dependencies and a few things subsystem maintainers didn't pick up, so I'm taking them thru my tree. The fixes from Johan didn't get into linux-next, but they've been waiting for some time now and they are what's left of what subsystem maintainers didn't pick up. Summary: - Sync dtc with upstream version v1.4.7-14-gc86da84d30e4 - Work to get rid of direct accesses to struct device_node name and type pointers in preparation for removing them. New helpers for parsing DT cpu nodes and conversions to use the helpers. printk conversions to %pOFn for printing DT node names. Most went thru subystem trees, so this is the remainder. - Fixes to DT child node lookups to actually be restricted to child nodes instead of treewide. - Refactoring of dtb targets out of arch code. This makes the support more uniform and enables building all dtbs on c6x, microblaze, and powerpc. - Various DT binding updates for Renesas r8a7744 SoC - Vendor prefixes for Facebook, OLPC - Restructuring of some ARM binding docs moving some peripheral bindings out of board/SoC binding files - New "secure-chosen" binding for secure world settings on ARM - Dual licensing of 2 DT IRQ binding headers" * tag 'devicetree-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (78 commits) ARM: dt: relicense two DT binding IRQ headers power: supply: twl4030-charger: fix OF sibling-node lookup NFC: nfcmrvl_uart: fix OF child-node lookup net: stmmac: dwmac-sun8i: fix OF child-node lookup net: bcmgenet: fix OF child-node lookup drm/msm: fix OF child-node lookup drm/mediatek: fix OF sibling-node lookup of: Add missing exports of node name compare functions dt-bindings: Add OLPC vendor prefix dt-bindings: misc: bk4: Add device tree binding for Liebherr's BK4 SPI bus dt-bindings: thermal: samsung: Add SPDX license identifier dt-bindings: clock: samsung: Add SPDX license identifiers dt-bindings: timer: ostm: Add R7S9210 support dt-bindings: phy: rcar-gen2: Add r8a7744 support dt-bindings: can: rcar_can: Add r8a7744 support dt-bindings: timer: renesas, cmt: Document r8a7744 CMT support dt-bindings: watchdog: renesas-wdt: Document r8a7744 support dt-bindings: thermal: rcar: Add device tree support for r8a7744 Documentation: dt: Add binding for /secure-chosen/stdout-path dt-bindings: arm: zte: Move sysctrl bindings to their own doc ...
| * kbuild: consolidate Devicetree dtb build rulesRob Herring2018-10-021-19/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is nothing arch specific about building dtb files other than their location under /arch/*/boot/dts/. Keeping each arch aligned is a pain. The dependencies and supported targets are all slightly different. Also, a cross-compiler for each arch is needed, but really the host compiler preprocessor is perfectly fine for building dtbs. Move the build rules to a common location and remove the arch specific ones. This is done in a single step to avoid warnings about overriding rules. The build dependencies had been a mixture of 'scripts' and/or 'prepare'. These pull in several dependencies some of which need a target compiler (specifically devicetable-offsets.h) and aren't needed to build dtbs. All that is really needed is dtc, so adjust the dependencies to only be dtc. This change enables support 'dtbs_install' on some arches which were missing the target. Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Paul Burton <paul.burton@mips.com> Acked-by: Ley Foon Tan <ley.foon.tan@intel.com> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Michal Marek <michal.lkml@markovi.net> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Michal Simek <monstr@monstr.eu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: linux-kbuild@vger.kernel.org Cc: linux-snps-arc@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: uclinux-h8-devel@lists.sourceforge.jp Cc: linux-mips@linux-mips.org Cc: nios2-dev@lists.rocketboards.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-xtensa@linux-xtensa.org Signed-off-by: Rob Herring <robh@kernel.org>
* | ARM: 8801/1: makefile: use ARMv3M mode for RiscPCJason A. Donenfeld2018-10-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The purpose of CONFIG_CPU_32v3 is to avoid ldrh/strh on the RiscPC, which is pretty much an ARMv4 device, except its bus will choke on the half-words. The way to make the C compiler not output ldrh/strh is with -march=armv3, which doesn't support them in the ISA. However, this prevents certain cryptography code from working that uses instructions like umull. Fortunately there's also -march=armv3m that does support those, making it possible to continue assembling optimized cryptography routines for our beloved RiscPC. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
* | ARM: 8798/1: remove unnecessary KBUILD_SRC ifeq conditionalMasahiro Yamada2018-09-191-4/+0
|/ | | | | | | | You can always prefix machine/plat header search paths with $(srctree)/ because $(srctree) is '.' for in-tree building. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
* Merge tag 'kbuild-v4.19-2' of ↵Linus Torvalds2018-08-251-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull more Kbuild updates from Masahiro Yamada: - add build_{menu,n,g,x}config targets for compile-testing Kconfig - fix and improve recursive dependency detection in Kconfig - fix parallel building of menuconfig/nconfig - fix syntax error in clang-version.sh - suppress distracting log from syncconfig - remove obsolete "rpm" target - remove VMLINUX_SYMBOL(_STR) macro entirely - fix microblaze build with CONFIG_DYNAMIC_FTRACE - move compiler test for dead code/data elimination to Kconfig - rename well-known LDFLAGS variable to KBUILD_LDFLAGS - misc fixes and cleanups * tag 'kbuild-v4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: rename LDFLAGS to KBUILD_LDFLAGS kbuild: pass LDFLAGS to recordmcount.pl kbuild: test dead code/data elimination support in Kconfig initramfs: move gen_initramfs_list.sh from scripts/ to usr/ vmlinux.lds.h: remove stale <linux/export.h> include export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR() Coccinelle: remove pci_alloc_consistent semantic to detect in zalloc-simple.cocci kbuild: make sorting initramfs contents independent of locale kbuild: remove "rpm" target, which is alias of "rpm-pkg" kbuild: Fix LOADLIBES rename in Documentation/kbuild/makefiles.txt kconfig: suppress "configuration written to .config" for syncconfig kconfig: fix "Can't open ..." in parallel build kbuild: Add a space after `!` to prevent parsing as file pattern scripts: modpost: check memory allocation results kconfig: improve the recursive dependency report kconfig: report recursive dependency involving 'imply' kconfig: error out when seeing recursive dependency kconfig: add build-only configurator targets scripts/dtc: consolidate include path options in Makefile
| * kbuild: rename LDFLAGS to KBUILD_LDFLAGSMasahiro Yamada2018-08-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit a0f97e06a43c ("kbuild: enable 'make CFLAGS=...' to add additional options to CC") renamed CFLAGS to KBUILD_CFLAGS. Commit 222d394d30e7 ("kbuild: enable 'make AFLAGS=...' to add additional options to AS") renamed AFLAGS to KBUILD_AFLAGS. Commit 06c5040cdb13 ("kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP") renamed CPPFLAGS to KBUILD_CPPFLAGS. For some reason, LDFLAGS was not renamed. Using a well-known variable like LDFLAGS may result in accidental override of the variable. Kbuild generally uses KBUILD_ prefixed variables for the internally appended options, so here is one more conversion to sanitize the naming convention. I did not touch Makefiles under tools/ since the tools build system is a different world. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
* | Merge tag 'armsoc-soc' of ↵Linus Torvalds2018-08-231-1/+0
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM 32-bit SoC platform updates from Olof Johansson: "Most of the SoC updates in this cycle are cleanups and moves to more modern infrastructure: - Davinci was moved to common clock framework - OMAP1-based Amstrad E3 "Superphone" saw a bunch of cleanups to the keyboard interface (bitbanged AT keyboard via GPIO). - Removal of some stale code for Renesas platforms - Power management improvements for i.MX6LL" * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (112 commits) ARM: uniphier: select RESET_CONTROLLER arm64: uniphier: select RESET_CONTROLLER ARM: uniphier: remove empty Makefile ARM: exynos: Clear global variable on init error path ARM: exynos: Remove outdated maintainer information ARM: shmobile: Always enable ARCH_TIMER on SoCs with A7 and/or A15 ARM: shmobile: r8a7779: hide unused r8a7779_platform_cpu_kill soc: r9a06g032: don't build SMP files for non-SMP config ARM: shmobile: Add the R9A06G032 SMP enabler driver ARM: at91: pm: configure wakeup sources for ULP1 mode ARM: at91: pm: add PMC fast startup registers defines ARM: at91: pm: Add ULP1 mode support ARM: at91: pm: Use ULP0 naming instead of slow clock ARM: hisi: handle of_iomap and fix missing of_node_put ARM: hisi: check of_iomap and fix missing of_node_put ARM: hisi: fix error handling and missing of_node_put ARM: mx5: Set the DBGEN bit in ARM_GPC register ARM: imx51: Configure M4IF to avoid visual artifacts ARM: imx: call imx6sx_cpuidle_init() conditionally for 6sll ARM: imx: fix i.MX6SLL build ...
| * ARM: uniphier: remove empty MakefileMasahiro Yamada2018-08-011-1/+0
| | | | | | | | | | | | | | arch/arm/mach-uniphier/Makefile has been unused for a long time. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Olof Johansson <olof@lixom.net>
* | Merge tag 'kbuild-v4.19' of ↵Linus Torvalds2018-08-151-3/+0
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - verify depmod is installed before modules_install - support build salt in case build ids must be unique between builds - allow users to specify additional host compiler flags via HOST*FLAGS, and rename internal variables to KBUILD_HOST*FLAGS - update buildtar script to drop vax support, add arm64 support - update builddeb script for better debarch support - document the pit-fall of if_changed usage - fix parallel build of UML with O= option - make 'samples' target depend on headers_install to fix build errors - remove deprecated host-progs variable - add a new coccinelle script for refcount_t vs atomic_t check - improve double-test coccinelle script - misc cleanups and fixes * tag 'kbuild-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (41 commits) coccicheck: return proper error code on fail Coccinelle: doubletest: reduce side effect false positives kbuild: remove deprecated host-progs variable kbuild: make samples really depend on headers_install um: clean up archheaders recipe kbuild: add %asm-generic to no-dot-config-targets um: fix parallel building with O= option scripts: Add Python 3 support to tracing/draw_functrace.py builddeb: Add automatic support for sh{3,4}{,eb} architectures builddeb: Add automatic support for riscv* architectures builddeb: Add automatic support for m68k architecture builddeb: Add automatic support for or1k architecture builddeb: Add automatic support for sparc64 architecture builddeb: Add automatic support for mips{,64}r6{,el} architectures builddeb: Add automatic support for mips64el architecture builddeb: Add automatic support for ppc64 and powerpcspe architectures builddeb: Introduce functions to simplify kconfig tests in set_debarch builddeb: Drop check for 32-bit s390 builddeb: Change architecture detection fallback to use dpkg-architecture builddeb: Skip architecture detection when KBUILD_DEBARCH is set ...
| * | kbuild: remove redundant LDFLAGS clearing in arch/*/MakefileMasahiro Yamada2018-07-191-3/+0
| |/ | | | | | | | | | | | | | | Since commit ce99d0bf312d ("kbuild: clear LDFLAGS in the top Makefile"), the top-level Makefile caters to this. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
* / ARM: 8779/1: add endianness option to LDFLAGS instead of LDMasahiro Yamada2018-07-111-2/+2
|/ | | | | | | | | | | | | | With the recent syntax extension, Kconfig is now able to evaluate the compiler / toolchain capability. However, accumulating flags to 'LD' is not compatible with the way it works; 'LD' must be passed to Kconfig to call $(ld-option,...) from Kconfig files. If you tweak 'LD' in arch Makefile depending on CONFIG_CPU_BIG_ENDIAN, this would end up with circular dependency between Makefile and Kconfig. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
* Merge tag 'armsoc-soc' of ↵Linus Torvalds2018-06-121-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC platform updates from Olof Johansson: "Here are the main updates for SoC support (besides DT additions) for ARM 32- and 64-bit platforms. The branch also contains defconfig updates to turn on drivers and options as needed on the various platforms. The largest parts of the delta are from cleanups moving platform data and board file setup of TI platforms to ti-sysc bus drivers. There are also some sweeping changes of eeprom and nand setup on Davinci, i.MX and other platforms. Samsung is removing support for Exynos5440, which was an oddball SoC that hasn't been seen much use in designs. Renesas is adding support for new SoCs (R-Car E3, RZ/G1C and RZ/N1D). Linus Walleij is also removing support for ux500 (Sony Ericsson) U8540/9540 SoCs that never made it to significant mass production and products" * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (133 commits) MAINTAINERS: add NXP linux team maillist as i.MX reviewer ARM: stm32: Don't select DMA unconditionally on STM32MP157C arm64: defconfig: Enable PCIe on msm8996 and db820c ARM: pxa3xx: enable external wakeup pins ARM: pxa: stargate2: use device properties for at24 eeprom arm64: defconfig: Enable HISILICON_LPC arm64: defconfig: enable drivers for Poplar support arm64: defconfig: Enable UFS on msm8996 ARM: berlin: switch to SPDX license identifier arm: berlin: remove non-necessary flush_cache_all() ARM: berlin: extend BG2CD Kconfig entry OMAP: CLK: CLKSRC: Add suspend resume hooks ARM: AM43XX: Add functions to save/restore am43xx control registers ASoC: ams_delta: use GPIO lookup table ARM: OMAP1: ams-delta: add GPIO lookup tables bus: ti-sysc: Fix optional clocks array access ARM: OMAP2+: Make sure LOGICRETSTATE bits are not cleared ARM: OMAP2+: prm44xx: Inroduce cpu_pm notifiers for context save/restore ARM: OMAP2+: prm44xx: Introduce context save/restore for am43 PRCM IO ARM: OMAP2+: powerdomain: Introduce cpu_pm notifiers for context save/restore ...
| * arm: shmobile: Change platform dependency to ARCH_RENESASGeert Uytterhoeven2018-04-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | Since commit 9b5ba0df4ea4f940 ("ARM: shmobile: Introduce ARCH_RENESAS") ARCH_RENESAS is a more appropriate platform dependency than the legacy ARCH_SHMOBILE, hence use the former. This will allow to drop ARCH_SHMOBILE on ARM in the near future. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* | Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds2018-06-061-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ARM updates from Russell King: - Initial round of Spectre variant 1 and variant 2 fixes for 32-bit ARM - Clang support improvements - nommu updates for v8 MPU - enable ARM_MODULE_PLTS by default to avoid problems loading modules with larger kernels - vmlinux.lds and dma-mapping cleanups * 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (31 commits) ARM: spectre-v1: fix syscall entry ARM: spectre-v1: add array_index_mask_nospec() implementation ARM: spectre-v1: add speculation barrier (csdb) macros ARM: KVM: report support for SMCCC_ARCH_WORKAROUND_1 ARM: KVM: Add SMCCC_ARCH_WORKAROUND_1 fast handling ARM: spectre-v2: KVM: invalidate icache on guest exit for Brahma B15 ARM: KVM: invalidate icache on guest exit for Cortex-A15 ARM: KVM: invalidate BTB on guest exit for Cortex-A12/A17 ARM: spectre-v2: warn about incorrect context switching functions ARM: spectre-v2: add firmware based hardening ARM: spectre-v2: harden user aborts in kernel space ARM: spectre-v2: add Cortex A8 and A15 validation of the IBE bit ARM: spectre-v2: harden branch predictor on context switches ARM: spectre: add Kconfig symbol for CPUs vulnerable to Spectre ARM: bugs: add support for per-processor bug checking ARM: bugs: hook processor bug checking into SMP and suspend paths ARM: bugs: prepare processor bug infrastructure ARM: add more CPU part numbers for Cortex and Brahma B15 CPUs ARM: 8774/1: remove no-op macro VMLINUX_SYMBOL() ARM: 8773/1: amba: Export amba_bustype ...
| * | ARM: 8766/1: drop no-thumb-interwork in EABI modeStefan Agner2018-05-191-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | According to GCC documentation -m(no-)thumb-interwork is meaningless in AAPCS configurations. Also clang does not support the flag: clang-5.0: error: unknown argument: '-mno-thumb-interwork' Just drop -mno-thumb-interwork in AEABI configuration. Signed-off-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
* / kbuild: add machine size to CHECKFLAGSLuc Van Oostenryck2018-06-011-1/+1
|/ | | | | | | | | | | | | | | | By default, sparse assumes a 64bit machine when compiled on x86-64 and 32bit when compiled on anything else. This can of course create all sort of problems for the other archs, like issuing false warnings ('shift too big (32) for type unsigned long'), or worse, failing to emit legitimate warnings. Fix this by adding the -m32/-m64 flag, depending on CONFIG_64BIT, to CHECKFLAGS in the main Makefile (and so for all archs). Also, remove the now unneeded -m32/-m64 in arch specific Makefiles. Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
* arm: npcm: add basic support for Nuvoton BMCsBrendan Higgins2018-03-061-0/+1
| | | | | | | | | | | Adds basic support for the Nuvoton NPCM750 BMC. Signed-off-by: Brendan Higgins <brendanhiggins@google.com> Reviewed-by: Tomer Maimon <tmaimon77@gmail.com> Reviewed-by: Avi Fishman <avifishman70@gmail.com> Tested-by: Tomer Maimon <tmaimon77@gmail.com> Tested-by: Avi Fishman <avifishman70@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* ARM: 8723/2: always assume the "unified" syntax for assembly codeNicolas Pitre2017-12-171-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | The GNU assembler has implemented the "unified syntax" parsing since 2005. This "unified" syntax is required when the kernel is built in Thumb2 mode. However the "unified" syntax is a mixed bag of features, including not requiring a `#' prefix with immediate operands. This leads to situations where some code builds just fine in Thumb2 mode and fails to build in ARM mode if that prefix is missing. This behavior discrepancy makes build tests less valuable, forcing both ARM and Thumb2 builds for proper coverage. Let's "fix" this issue by always using the "unified" syntax for both ARM and Thumb2 mode. Given that the documented minimum binutils version that properly builds the kernel is version 2.20 released in 2010, we can assume that any toolchain capable of building the latest kernel is also "unified syntax" capable. Whith this, a bunch of macros used to mask some differences between both syntaxes can be removed, with the side effect of making LTO easier. Suggested-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
* Merge tag 'kbuild-v4.15' of ↵Linus Torvalds2017-11-181-3/+3
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: "One of the most remarkable improvements in this cycle is, Kbuild is now able to cache the result of shell commands. Some variables are expensive to compute, for example, $(call cc-option,...) invokes the compiler. It is not efficient to redo this computation every time, even when we are not actually building anything. Kbuild creates a hidden file ".cache.mk" that contains invoked shell commands and their results. The speed-up should be noticeable. Summary: - Fix arch build issues (hexagon, sh) - Clean up various Makefiles and scripts - Fix wrong usage of {CFLAGS,LDFLAGS}_MODULE in arch Makefiles - Cache variables that are expensive to compute - Improve cc-ldopton and ld-option for Clang - Optimize output directory creation" * tag 'kbuild-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (30 commits) kbuild: move coccicheck help from scripts/Makefile.help to top Makefile sh: decompressor: add shipped files to .gitignore frv: .gitignore: ignore vmlinux.lds selinux: remove unnecessary assignment to subdir- kbuild: specify FORCE in Makefile.headersinst as .PHONY target kbuild: remove redundant mkdir from ./Kbuild kbuild: optimize object directory creation for incremental build kbuild: create object directories simpler and faster kbuild: filter-out PHONY targets from "targets" kbuild: remove redundant $(wildcard ...) for cmd_files calculation kbuild: create directory for make cache only when necessary sh: select KBUILD_DEFCONFIG depending on ARCH kbuild: fix linker feature test macros when cross compiling with Clang kbuild: shrink .cache.mk when it exceeds 1000 lines kbuild: do not call cc-option before KBUILD_CFLAGS initialization kbuild: Cache a few more calls to the compiler kbuild: Add a cache for generated variables kbuild: add forward declaration of default target to Makefile.asm-generic kbuild: remove KBUILD_SUBDIR_ASFLAGS and KBUILD_SUBDIR_CCFLAGS hexagon/kbuild: replace CFLAGS_MODULE with KBUILD_CFLAGS_MODULE ...
| * arm/kbuild: replace {C, LD}FLAGS_MODULE with KBUILD_{C, LD}FLAGS_MODULECao jin2017-10-301-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | As kbuild document & commit 6588169d51 says: KBUILD_{C,LD}FLAGS_MODULE are used to add arch-specific options for $(CC) and $(LD). From commandline, {C,LD}FLAGS_MODULE shall be used. Doesn't have any functional change, but just follow kbuild rules. Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com> CC: Russell King <linux@armlinux.org.uk> CC: linux-arm-kernel@lists.infradead.org Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
* | Merge tag 'armsoc-soc' of ↵Linus Torvalds2017-11-161-0/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC platform updates from Arnd Bergmann: "Most of the commits are for defconfig changes, to enable newly added drivers or features that people have started using. For the changed lines lines, we have mostly cleanups, the affected platforms are OMAP, Versatile, EP93xx, Samsung, Broadcom, i.MX, and Actions. The largest single change is the introduction of the TI "sysc" bus driver, with the intention of cleaning up more legacy code. Two new SoC platforms get added this time: - Allwinner R40 is a modernized version of the A20 chip, now with a Quad-Core ARM Cortex-A7. According to the manufacturer, it is intended for "Smart Hardware" - Broadcom Hurricane 2 (Aka Strataconnect BCM5334X) is a family of chips meant for managed gigabit ethernet switches, based around a Cortex-A9 CPU. Finally, we gain SMP support for two platforms: Renesas R-Car E2 and Amlogic Meson8/8b, which were previously added but only supported uniprocessor operation" * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (118 commits) ARM: multi_v7_defconfig: Select RPMSG_VIRTIO as module ARM: multi_v7_defconfig: enable CONFIG_GPIO_UNIPHIER arm64: defconfig: enable CONFIG_GPIO_UNIPHIER ARM: meson: enable MESON_IRQ_GPIO in Kconfig for meson8b ARM: meson: Add SMP bringup code for Meson8 and Meson8b ARM: smp_scu: allow the platform code to read the SCU CPU status ARM: smp_scu: add a helper for powering on a specific CPU dt-bindings: Amlogic: Add Meson8 and Meson8b SMP related documentation ARM: OMAP3: Delete an unnecessary variable initialisation in omap3xxx_hwmod_init() ARM: OMAP3: Use common error handling code in omap3xxx_hwmod_init() ARM: defconfig: select the right SX150X driver arm64: defconfig: Enable QCOM_IOMMU arm64: Add ThunderX drivers to defconfig arm64: defconfig: Enable Tegra PCI controller cpufreq: imx6q: Move speed grading check to cpufreq driver arm64: defconfig: re-enable Qualcomm DB410c USB ARM: configs: stm32: Add MDMA support in STM32 defconfig ARM: imx: Enable cpuidle for i.MX6DL starting at 1.1 bus: ti-sysc: Fix unbalanced pm_runtime_enable by adding remove bus: ti-sysc: mark PM functions as __maybe_unused ...
| * | ARM: meson: Add SMP bringup code for Meson8 and Meson8bMartin Blumenstingl2017-10-291-0/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | This adds the necessary SMP-operations and startup code to use the additional cores on the Amlogic Meson8/Meson8m2 (both are using the same sequence) and Meson8b (using a slightly difference sequence) SoCs. Signed-off-by: Carlo Caione <carlo@endlessm.com> [add Meson8/Meson8m2 support and allow taking CPU cores offline as well] Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
* | ARM: 8716/1: pass endianness info to sparseLuc Van Oostenryck2017-11-011-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ARM depends on the macros '__ARMEL__' & '__ARMEB__' being defined or not to correctly select or define endian-specific macros, structures or pieces of code. These macros are predefined by the compiler but sparse knows nothing about them and thus may pre-process files differently from what gcc would. Fix this by passing '-D__ARMEL__' or '-D__ARMEB__' to sparse, depending on the endianness of the kernel, like defined by GCC. Note: In most case it won't change anything since most ARMs use little-endian (but an allyesconfig would use big-endian!). To: Russell King <linux@armlinux.org.uk> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
* | ARM: 8701/1: fix sparse flags for build on 64bit machinesLuc Van Oostenryck II2017-10-121-1/+1
|/ | | | | | | | | | | | | | | By default sparse uses the characteristics of the build machine to infer things like the wordsize. This is fine when doing native builds but for ARM it's, I suspect, very rarely the case and if the build are done on a 64bit machine we get a bunch of warnings like: 'cast truncates bits from constant value (... becomes ...)' Fix this by adding the -m32 flags for sparse. Reported-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
* ARM: Prepare Actions Semi S500Andreas Färber2017-06-211-0/+1
| | | | | | Add ARCH_ACTIONS and mach-actions/owl.c for "actions,s500". Signed-off-by: Andreas Färber <afaerber@suse.de>
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