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* MIPS: Loongson64: test for -march=loongson3a cflagJiaxun Yang2024-02-231-5/+2
| | | | | | | | | | Currently march flag is hardcoded to loongson3a for GCC and mips64r2 for clang. We can actually test it to simplify the code. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* MIPS: BMIPS: Drop unnecessary assembler flagJiaxun Yang2024-02-231-2/+2
| | | | | | | | Nowadays GCC will always pass -march flag to gas, so there is no need to pass another mips32 flag to assembler. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* MIPS: Fallback CPU -march flag to ISA level if unsupportedJiaxun Yang2024-02-231-13/+17
| | | | | | | | | | | | | LLVM does not implement some of -march options. However those options are not mandatory for kernel to build for those CPUs. Fallback -march CFLAG to ISA level if unsupported by toolchain so we can get those kernel to build with LLVM. Link: https://github.com/ClangBuiltLinux/linux/issues/1544 Reported-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* MIPS: Remove cc-option checks for -march=octeonJiaxun Yang2024-02-231-4/+1
| | | | | | | | Nowadays our minimal supported GCC/Clang all support -march=octeon. Remove cc-option checks to simplify code. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* MIPS: Probe toolchain support of -msym32Jiaxun Yang2024-02-231-1/+1
| | | | | | | | | | msym32 is not supported by LLVM toolchain. Workaround by probe toolchain support of msym32 for KBUILD_SYM32 feature. Link: https://github.com/ClangBuiltLinux/linux/issues/1544 Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* Revert MIPS: Loongson: Fix build error when make modules_installMaciej W. Rozycki2023-07-251-3/+7
| | | | | | | | | | | | | | | | | Revert commit 531b3d1195d0 ("MIPS: Loongson: Fix build error when make modules_install"), which made `-march=loongson2e', `-march=loongson2f', and `-march=loongson3a' compilation options probed for even though GCC has supported them since 4.4.0, 4.4.0, and 4.6.0 respectively, which is below our current minimum requirement of 5.1, in an attempt to work around for the `cc-option' `make' function being undefined with `make' targets that do not use the compiler. The workaround has now been made obsolete, by querying the `need-compiler' variable instead so as to make sure the compiler isn't called for non-build targets. Verified with `fuloong2e_defconfig' and the `modules_install' target. Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* MIPS: Only fiddle with CHECKFLAGS if `need-compiler'Maciej W. Rozycki2023-07-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We have originally guarded fiddling with CHECKFLAGS in our arch Makefile by checking for the CONFIG_MIPS variable, not set for targets such as `distclean', etc. that neither include `.config' nor use the compiler. Starting from commit 805b2e1d427a ("kbuild: include Makefile.compiler only when compiler is needed") we have had a generic `need-compiler' variable explicitly telling us if the compiler will be used and thus its capabilities need to be checked and expressed in the form of compilation flags. If this variable is not set, then `make' functions such as `cc-option' are undefined, causing all kinds of weirdness to happen if we expect specific results to be returned, most recently: cc1: error: '-mloongson-mmi' must be used with '-mhard-float' messages with configurations such as `fuloong2e_defconfig' and the `modules_install' target, which does include `.config' and yet does not use the compiler. Replace the check for CONFIG_MIPS with one for `need-compiler' instead, so as to prevent the compiler from being ever called for CHECKFLAGS when not needed. Reported-by: Guillaume Tucker <guillaume.tucker@collabora.com> Closes: https://lore.kernel.org/r/85031c0c-d981-031e-8a50-bc4fad2ddcd8@collabora.com/ Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk> Fixes: 805b2e1d427a ("kbuild: include Makefile.compiler only when compiler is needed") Cc: stable@vger.kernel.org # v5.13+ Reported-by: "kernelci.org bot" <bot@kernelci.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* MIPS: Fix CONFIG_CPU_DADDI_WORKAROUNDS `modules_install' regressionMaciej W. Rozycki2023-07-251-2/+2
| | | | | | | | | | | | | | | | | | | | | Remove a build-time check for the presence of the GCC `-msym32' option. This option has been there since GCC 4.1.0, which is below the minimum required as at commit 805b2e1d427a ("kbuild: include Makefile.compiler only when compiler is needed"), when an error message: arch/mips/Makefile:306: *** CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32. Stop. started to trigger for the `modules_install' target with configurations such as `decstation_64_defconfig' that set CONFIG_CPU_DADDI_WORKAROUNDS, because said commit has made `cc-option-yn' an undefined function for non-build targets. Reported-by: Jan-Benedict Glaw <jbglaw@lug-owl.de> Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk> Fixes: 805b2e1d427a ("kbuild: include Makefile.compiler only when compiler is needed") Cc: stable@vger.kernel.org # v5.13+ Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* Merge tag 'mips_6.5_1' of ↵Linus Torvalds2023-07-091-7/+3
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux Pull MIPS fixes from Thomas Bogendoerfer: - fixes for KVM - fix for loongson build and cpu probing - DT fixes * tag 'mips_6.5_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MIPS: kvm: Fix build error with KVM_MIPS_DEBUG_COP0_COUNTERS enabled MIPS: dts: add missing space before { MIPS: Loongson: Fix build error when make modules_install MIPS: KVM: Fix NULL pointer dereference MIPS: Loongson: Fix cpu_probe_loongson() again
| * MIPS: Loongson: Fix build error when make modules_installHuacai Chen2023-07-031-7/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After commit 0e96ea5c3eb5904e5dc2f ("MIPS: Loongson64: Clean up use of cc-ifversion") we get a build error when make modules_install: cc1: error: '-mloongson-mmi' must be used with '-mhard-float' The reason is when make modules_install, 'call cc-option' doesn't work in $(KBUILD_CFLAGS) of 'CHECKFLAGS'. Then there is no -mno-loongson-mmi applied and -march=loongson3a enable MMI instructions. To be detail, the error message comes from the CHECKFLAGS invocation of $(CC) but it has no impact on the final result of make modules_install, it is purely a cosmetic issue. The error occurs because cc-option is defined in scripts/Makefile.compiler, which is not included in Makefile when running 'make modules_install', as install targets are not supposed to require the compiler; see commit 805b2e1d427aab4b ("kbuild: include Makefile.compiler only when compiler is needed"). As a result, the call to check for '-mno-loongson-mmi' just never happens. Fix this by partially reverting to the old logic, use 'call cc-option' to conditionally apply -march=loongson3a and -march=mips64r2. By the way, Loongson-2E/2F is also broken in commit 13ceb48bc19c563e05f4 ("MIPS: Loongson2ef: Remove unnecessary {as,cc}-option calls") so fix it together. Fixes: 13ceb48bc19c563e05f4 ("MIPS: Loongson2ef: Remove unnecessary {as,cc}-option calls") Fixes: 0e96ea5c3eb5904e5dc2 ("MIPS: Loongson64: Clean up use of cc-ifversion") Cc: stable@vger.kernel.org Cc: Feiyang Chen <chenfeiyang@loongson.cn> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* | mips: Include KBUILD_CPPFLAGS in CHECKFLAGS invocationNathan Chancellor2023-06-051-1/+1
|/ | | | | | | | | | | | | | | A future change will move CLANG_FLAGS from KBUILD_{A,C}FLAGS to KBUILD_CPPFLAGS so that '--target' is available while preprocessing. When that occurs, the following error appears when building ARCH=mips with clang (tip of tree error shown): clang: error: unsupported option '-mabi=' for target 'x86_64-pc-linux-gnu' Add KBUILD_CPPFLAGS in the CHECKFLAGS invocation to keep everything working after the move. Signed-off-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
* MIPS: Loongson: Move arch cflags to MIPS top level MakefileJiaxun Yang2023-04-051-0/+38
| | | | | | | Arch cflags should be independent to Platform. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* MIPS: Prefer cc-option for additions to cflagsNathan Chancellor2023-01-261-1/+1
| | | | | | | | | | | | | | | | A future change will switch as-option to use KBUILD_AFLAGS instead of KBUILD_CFLAGS to allow clang to drop -Qunused-arguments, which may cause issues if the flag being tested requires a flag previously added to KBUILD_CFLAGS but not KBUILD_AFLAGS. Use cc-option for cflags additions so that the flags are tested properly. Signed-off-by: Nathan Chancellor <nathan@kernel.org> Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Tested-by: Linux Kernel Functional Testing <lkft@linaro.org> Tested-by: Anders Roxell <anders.roxell@linaro.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
* MIPS: Always use -Wa,-msoft-float and eliminate GAS_HAS_SET_HARDFLOATNathan Chancellor2023-01-261-10/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | -Wa,-msoft-float is tested with as-option, which will be a problem for clang with an upcoming change to move as-option to use KBUILD_AFLAGS instead of KBUILD_CFLAGS due to a lack of '-mno-abicalls' in KBUILD_AFLAGS at the point that this check occurs; $(cflags-y) is added to KBUILD_AFLAGS towards the end of this file. clang: error: ignoring '-fno-PIE' option as it cannot be used with implicit usage of -mabicalls and the N64 ABI [-Werror,-Woption-ignored] This could be resolved by switching to a cc-option check but '$(cflags-y)' would need to be added so that '-mno-abicalls' is present for the test. However, this check is no longer necessary, as -msoft-float is supported by all supported assembler versions (GNU as 2.25+ and LLVM 11+). Eliminate GAS_HAS_SET_HARDFLOAT and all of its uses, inlining SET_HARDFLOAT where necessary. Link: https://lore.kernel.org/202209101939.bvk64Fok-lkp@intel.com/ Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Nathan Chancellor <nathan@kernel.org> Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Tested-by: Linux Kernel Functional Testing <lkft@linaro.org> Tested-by: Anders Roxell <anders.roxell@linaro.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
* MIPS: Use "grep -E" instead of "egrep"Tiezhu Yang2022-11-211-1/+1
| | | | | | | | | | | | | | | | | | The latest version of grep claims the egrep is now obsolete so the build now contains warnings that look like: egrep: warning: egrep is obsolescent; using grep -E fix this up by moving the related file to use "grep -E" instead. Here are the steps to install the latest grep: wget http://ftp.gnu.org/gnu/grep/grep-3.8.tar.gz tar xf grep-3.8.tar.gz cd grep-3.8 && ./configure && make sudo make install export PATH=/usr/local/bin:$PATH Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* kbuild: remove head-y syntaxMasahiro Yamada2022-10-021-2/+0
| | | | | | | | | | | | | | | | | | | | | Kbuild puts the objects listed in head-y at the head of vmlinux. Conventionally, we do this for head*.S, which contains the kernel entry point. 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 system perspective, head-y is not mandatory. If you can achieve the proper code placement by the linker script only, it would be cleaner. I collected the current head-y objects into head-object-list.txt. It is a whitelist. My hope is it will be reduced in the long run. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
* MIPS: Remove VR41xx supportThomas Bogendoerfer2022-07-141-1/+0
| | | | | | No (active) developer owns this hardware, so let's remove Linux support. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* mips: Always permit to build u-boot imagesPaul Cercueil2022-03-071-4/+0
| | | | | | | | | | | | | | | The platforms where the kernel should be loaded above 0x8000.0000 do not support loading u-boot images, that doesn't mean that we shouldn't be able to generate them. Additionally, since commit 79876cc1d7b8 ("MIPS: new Kconfig option ZBOOT_LOAD_ADDRESS"), the $(zload-y) variable was no longer hardcoded, which made it impossible to use the uzImage.bin target. Fixes: 79876cc1d7b8 ("MIPS: new Kconfig option ZBOOT_LOAD_ADDRESS") Cc: <stable@vger.kernel.org> Signed-off-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* MIPS: Remove TX39XX supportThomas Bogendoerfer2022-03-011-1/+0
| | | | | | | | | | No (active) developer owns this hardware, so let's remove Linux support. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Acked-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
* MIPS: Makefile: Remove "ifdef need-compiler" for Kbuild.platformsTiezhu Yang2021-12-141-2/+0
| | | | | | | | | | | | | After commit 13ceb48bc19c ("MIPS: Loongson2ef: Remove unnecessary {as,cc}-option calls"), no need to use "ifdef need-compiler" for Kbuild.platforms, because the cause of the build issue mentioned in commit 0706f74f719e ("MIPS: fix *-pkg builds for loongson2ef platform") has been disappeared, so just remove it. Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* Merge tag 'mips_5.16_1' of ↵Linus Torvalds2021-11-131-0/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux Pull more MIPS updates from Thomas Bogendoerfer: - Config updates for BMIPS platform - Build fixes - Makefile cleanups * tag 'mips_5.16_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: mips: decompressor: do not copy source files while building MIPS: boot/compressed/: add __bswapdi2() to target for ZSTD decompression MIPS: fix duplicated slashes for Platform file path MIPS: fix *-pkg builds for loongson2ef platform PCI: brcmstb: Allow building for BMIPS_GENERIC MIPS: BMIPS: Enable PCI Kconfig MIPS: VDSO: remove -nostdlib compiler flag mips: BCM63XX: ensure that CPU_SUPPORTS_32BIT_KERNEL is set MIPS: Update bmips_stb_defconfig MIPS: Allow modules to set board_be_handler
| * MIPS: fix *-pkg builds for loongson2ef platformMasahiro Yamada2021-11-091-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 805b2e1d427a ("kbuild: include Makefile.compiler only when compiler is needed"), package builds for the loongson2f platform fail. $ make ARCH=mips CROSS_COMPILE=mips64-linux- lemote2f_defconfig bindeb-pkg [ snip ] sh ./scripts/package/builddeb arch/mips/loongson2ef//Platform:36: *** only binutils >= 2.20.2 have needed option -mfix-loongson2f-nop. Stop. cp: cannot stat '': No such file or directory make[5]: *** [scripts/Makefile.package:87: intdeb-pkg] Error 1 make[4]: *** [Makefile:1558: intdeb-pkg] Error 2 make[3]: *** [debian/rules:13: binary-arch] Error 2 dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2 make[2]: *** [scripts/Makefile.package:83: bindeb-pkg] Error 2 make[1]: *** [Makefile:1558: bindeb-pkg] Error 2 make: *** [Makefile:350: __build_one_by_one] Error 2 The reason is because "make image_name" fails. $ make ARCH=mips CROSS_COMPILE=mips64-linux- image_name arch/mips/loongson2ef//Platform:36: *** only binutils >= 2.20.2 have needed option -mfix-loongson2f-nop. Stop. In general, adding $(error ...) in the parse stage is troublesome, and it is pointless to check toolchains even if we are not building anything. Do not include Kbuild.platform in such cases. Fixes: 805b2e1d427a ("kbuild: include Makefile.compiler only when compiler is needed") Reported-by: Jason Self <jason@bluehome.net> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* | kbuild: use more subdir- for visiting subdirectories while cleaningMasahiro Yamada2021-10-241-7/+1
|/ | | | | | | | | | | | | | | | | | Documentation/kbuild/makefiles.rst suggests to use "archclean" for cleaning arch/$(SRCARCH)/boot/, but it is not a hard requirement. Since commit d92cc4d51643 ("kbuild: require all architectures to have arch/$(SRCARCH)/Kbuild"), we can use the "subdir- += boot" trick for all architectures. This can take advantage of the parallel option (-j) for "make clean". I also cleaned up the comments in arch/$(SRCARCH)/Makefile. The "archdep" target no longer exists. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
* Merge tag 'kbuild-v5.15' of ↵Linus Torvalds2021-09-031-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Add -s option (strict mode) to merge_config.sh to make it fail when any symbol is redefined. - Show a warning if a different compiler is used for building external modules. - Infer --target from ARCH for CC=clang to let you cross-compile the kernel without CROSS_COMPILE. - Make the integrated assembler default (LLVM_IAS=1) for CC=clang. - Add <linux/stdarg.h> to the kernel source instead of borrowing <stdarg.h> from the compiler. - Add Nick Desaulniers as a Kbuild reviewer. - Drop stale cc-option tests. - Fix the combination of CONFIG_TRIM_UNUSED_KSYMS and CONFIG_LTO_CLANG to handle symbols in inline assembly. - Show a warning if 'FORCE' is missing for if_changed rules. - Various cleanups * tag 'kbuild-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (39 commits) kbuild: redo fake deps at include/ksym/*.h kbuild: clean up objtool_args slightly modpost: get the *.mod file path more simply checkkconfigsymbols.py: Fix the '--ignore' option kbuild: merge vmlinux_link() between ARCH=um and other architectures kbuild: do not remove 'linux' link in scripts/link-vmlinux.sh kbuild: merge vmlinux_link() between the ordinary link and Clang LTO kbuild: remove stale *.symversions kbuild: remove unused quiet_cmd_update_lto_symversions gen_compile_commands: extract compiler command from a series of commands x86: remove cc-option-yn test for -mtune= arc: replace cc-option-yn uses with cc-option s390: replace cc-option-yn uses with cc-option ia64: move core-y in arch/ia64/Makefile to arch/ia64/Kbuild sparc: move the install rule to arch/sparc/Makefile security: remove unneeded subdir-$(CONFIG_...) kbuild: sh: remove unused install script kbuild: Fix 'no symbols' warning when CONFIG_TRIM_UNUSD_KSYMS=y kbuild: Switch to 'f' variants of integrated assembler flag kbuild: Shuffle blank line to improve comment meaning ...
| * kbuild: do not require sub-make for separate output tree buildsMasahiro Yamada2021-08-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | As explained in commit 3204a7fb98a3 ("kbuild: prefix $(srctree)/ to some included Makefiles"), I want to stop using --include-dir some day. I already fixed up the top Makefile, but some arch Makefiles (mips, um, x86) still include check-in Makefiles without $(srctree)/. Fix them up so 'need-sub-make := 1' can go away for this case. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
* | Merge tag 'mips_5.15' of ↵Linus Torvalds2021-09-031-0/+3
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux Pull MIPS updates from Thomas Bogendoerfer: - converted Pistachio platform to use MIPS generic kernel - fixes and cleanups * tag 'mips_5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (29 commits) MIPS: Malta: fix alignment of the devicetree buffer MIPS: ingenic: Unconditionally enable clock of CPU #0 MIPS: mscc: ocelot: mark the phy-mode for internal PHY ports MIPS: mscc: ocelot: disable all switch ports by default MAINTAINERS: adjust PISTACHIO SOC SUPPORT after its retirement MIPS: Return true/false (not 1/0) from bool functions MIPS: generic: Return true/false (not 1/0) from bool functions MIPS: Make a alias for pistachio_defconfig MIPS: Retire MACH_PISTACHIO MIPS: config: generic: Add config for Marduk board pinctrl: pistachio: Make it as an option phy: pistachio-usb: Depend on MIPS || COMPILE_TEST clocksource/drivers/pistachio: Make it selectable for MIPS clk: pistachio: Make it selectable for generic MIPS kernel MIPS: DTS: Pistachio add missing cpc and cdmm MIPS: generic: Allow generating FIT image for Marduk board MIPS: locking/atomic: Fix atomic{_64,}_sub_if_positive MIPS: loongson2ef: don't build serial.o unconditionally MIPS: Replace deprecated CPU-hotplug functions. MIPS: Alchemy: Fix spelling contraction "cant" -> "can't" ...
| * MIPS: Make a alias for pistachio_defconfigJiaxun Yang2021-08-121-0/+3
| | | | | | | | | | | | | | | | For those who miss the old defconfig, make a alias to generic kernel. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* | mips: Fix non-POSIX regexpH. Nikolaus Schaller2021-08-051-1/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When cross compiling a MIPS kernel on a BSD based HOSTCC leads to errors like SYNC include/config/auto.conf.cmd - due to: .config egrep: empty (sub)expression UPD include/config/kernel.release HOSTCC scripts/dtc/dtc.o - due to target missing It turns out that egrep uses this egrep pattern: (|MINOR_|PATCHLEVEL_) This is not valid syntax or gives undefined results according to POSIX 9.5.3 ERE Grammar https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html It seems to be silently accepted by the Linux egrep implementation while a BSD host complains. Such patterns can be replaced by a transformation like "(|p1|p2)" -> "(p1|p2)?" Fixes: 48c35b2d245f ("[MIPS] There is no __GNUC_MAJOR__") Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
* kbuild: require all architectures to have arch/$(SRCARCH)/KbuildMasahiro Yamada2021-05-261-3/+0
| | | | | | | | | arch/$(SRCARCH)/Kbuild is useful for Makefile cleanups because you can use the obj-y syntax. Add an empty file if it is missing in arch/$(SRCARCH)/. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
* arch: use cross_compiling to check whether it is a cross build or notMasahiro Yamada2021-05-061-1/+1
| | | | | | | | | | | | | | | | | | | | 'cross_compiling' is defined by the top Makefile and available for arch Makefiles to check whether it is a cross build or not. A good thing is the variable name 'cross_compiling' is self-documenting. This is a simple replacement for m68k, mips, sh, for which $(ARCH) and $(SRCARCH) always match. No functional change is intended for xtensa, either. This is rather a fix for parisc because arch/parisc/Makefile defines UTS_MATCHINE depending on CONFIG_64BIT, therefore cc-cross-prefix is not working in Kconfig time. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Helge Deller <deller@gmx.de> # parisc Acked-by: Max Filippov <jcmvbkbc@gmail.com> # xtensa
* Merge tag 'mips_5.12' of ↵Linus Torvalds2021-02-211-0/+20
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux Pull MIPS updates from Thomas Bogendoerfer: - added support for Nintendo N64 - added support for Realtek RTL83XX SoCs - kaslr support for Loongson64 - first steps to get rid of set_fs() - DMA runtime coherent/non-coherent selection cleanup - cleanups and fixes * tag 'mips_5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (98 commits) Revert "MIPS: Add basic support for ptrace single step" vmlinux.lds.h: catch more UBSAN symbols into .data MIPS: kernel: Drop kgdb_call_nmi_hook MAINTAINERS: Add git tree for KVM/mips MIPS: Use common way to parse elfcorehdr MIPS: Simplify EVA cache handling Revert "MIPS: kernel: {ftrace,kgdb}: Set correct address limit for cache flushes" MIPS: remove CONFIG_DMA_PERDEV_COHERENT MIPS: remove CONFIG_DMA_MAYBE_COHERENT driver core: lift dma_default_coherent into common code MIPS: refactor the runtime coherent vs noncoherent DMA indicators MIPS/alchemy: factor out the DMA coherent setup MIPS/malta: simplify plat_setup_iocoherency MIPS: Add basic support for ptrace single step MAINTAINERS: replace non-matching patterns for loongson{2,3} MIPS: Make check condition for SDBBP consistent with EJTAG spec mips: Replace lkml.org links with lore Revert "MIPS: microMIPS: Fix the judgment of mm_jr16_op and mm_jalr_op" MIPS: crash_dump.c: Simplify copy_oldmem_page() Revert "mips: Manually call fdt_init_reserved_mem() method" ...
| * Revert "MIPS: Remove unused R4300 CPU support"Lauri Kasanen2021-01-221-0/+1
| | | | | | | | | | | | | | | | | | This reverts commit f9065b54d437c4660e3d974ad9ce5188c068cd76. We're adding Nintendo 64 support, so the VR4300 is no longer unused. Signed-off-by: Lauri Kasanen <cand@gmx.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
| * MIPS: Support binutils configured with --enable-mips-fix-loongson3-llsc=yesAurelien Jarno2021-01-151-0/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From version 2.35, binutils can be configured with --enable-mips-fix-loongson3-llsc=yes, which means it defaults to -mfix-loongson3-llsc. This breaks labels which might then point at the wrong instruction. The workaround to explicitly pass -mno-fix-loongson3-llsc has been added in Linux version 5.1, but is only enabled when building a Loongson 64 kernel. As vendors might use a common toolchain for building Loongson and non-Loongson kernels, just move that workaround to arch/mips/Makefile. At the same time update the comments to reflect the current status. Cc: stable@vger.kernel.org # 5.1+ Cc: YunQiang Su <syq@debian.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* | arch: mips: Remove CONFIG_OPROFILE supportViresh Kumar2021-01-221-1/+0
|/ | | | | | | | | | | | | | | | The "oprofile" user-space tools don't use the kernel OPROFILE support any more, and haven't in a long time. User-space has been converted to the perf interfaces. Remove the old oprofile's architecture specific support. Suggested-by: Christoph Hellwig <hch@infradead.org> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Robert Richter <rric@kernel.org> Acked-by: William Cohen <wcohen@redhat.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Thomas Gleixner <tglx@linutronix.de>
* mips: boot: add support for self-extracting FIT images (vmlinuz.itb)Alexander Lobakin2020-11-121-0/+1
| | | | | | | | | | | | | | | Commit c3e2ee657418 ("MIPS: generic: Add support for zboot") added support for self-extracting images to Generic MIPS. However, the intended way to boot Generic MIPS kernels is using FIT Images and UHI boot protocol, but currently there's no way to make self-extracting FIT Image (only legacy uzImages). Add a target for this named "vmlinuz.itb", which will consist of vmlinuz.bin and selected DT blobs. It will allow to have the advantages of both UHI and self-extracting images. Signed-off-by: Alexander Lobakin <alobakin@pm.me> Acked-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* mips: boot: clean up self-extracting targets scenariosAlexander Lobakin2020-11-121-1/+1
| | | | | | | | | | | | | | | | | | 1. All final targets like vmlinuz.{bin,ecoff,srec} etc. should reside in $(objtree)/arch/mips/boot, not in the root $(objtree) directory. The only file that should be left there is vmlinuz, similar to other architectures. 2. Add all the targets to $(targets) variable, so they'll be properly accounted by Kbuild. This also allows to remove redundant $(clean-files) (which were missing uzImage BTW). 3. Prefix all targets with $(obj)/$(objtree), depending on their locations. Misc: fix the identation of the 'STRIP' quiet message. Signed-off-by: Alexander Lobakin <alobakin@pm.me> Acked-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* mips: Add MIPS Warrior P5600 supportSerge Semin2020-05-221-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a MIPS32 Release 5 based IP core with XPA, EVA, dual/quad issue exec pipes, MMU with two-levels TLB, UCA, MSA, MDU core level features and system level features like up to six P5600 calculation cores, CM2 with L2 cache, IOCU/IOMMU (though might be unused depending on the system-specific IP core configuration), GIC, CPC, virtualisation module, eJTAG and PDtrace. As being MIPS32 Release 5 based core it provides all the features available by the CPU_MIPS32_R5 config, while adding a few more like UCA attribute support, availability of CPU-freq (by means of L2/CM clock ratio setting), EI/VI GIC modes detection at runtime. In addition to this if P5600 architecture is enabled modern GNU GCC provides a specific tuning for P5600 processors with respect to the classic MIPS32 Release 5. First of all branch-likely avoidance is activated only when the code is compiled with the speed optimization (avoidance is always enabled for the pure MIPS32 Release 5 architecture). Secondly the madd/msub avoidance is enabled since madd/msub utilization isn't profitable due to overhead of getting the result out of the HI/LO registers. Multiply-accumulate instructions are activated and utilized together with the necessary code reorder when multiply-add/multiply-subtract statements are met. Finally load/store bonding is activated by default. All of these optimizations may make the code relatively faster than if just MIP32 release 5 architecture was requested. Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru> Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Paul Burton <paulburton@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* mips: Add MIPS Release 5 supportSerge Semin2020-05-221-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are five MIPS32/64 architecture releases currently available: from 1 to 6 except fourth one, which was intentionally skipped. Three of them can be called as major: 1st, 2nd and 6th, that not only have some system level alterations, but also introduced significant core/ISA level updates. The rest of the MIPS architecture releases are minor. Even though they don't have as much ISA/system/core level changes as the major ones with respect to the previous releases, they still provide a set of updates (I'd say they were intended to be the intermediate releases before a major one) that might be useful for the kernel and user-level code, when activated by the kernel or compiler. In particular the following features were introduced or ended up being available at/after MIPS32/64 Release 5 architecture: + the last release of the misaligned memory access instructions, + virtualisation - VZ ASE - is optional component of the arch, + SIMD - MSA ASE - is optional component of the arch, + DSP ASE is optional component of the arch, + CP0.Status.FR=1 for CP1.FIR.F64=1 (pure 64-bit FPU general registers) must be available if FPU is implemented, + CP1.FIR.Has2008 support is required so CP1.FCSR.{ABS2008,NAN2008} bits are available. + UFR/UNFR aliases to access CP0.Status.FR from user-space by means of ctc1/cfc1 instructions (enabled by CP0.Config5.UFR), + CP0.COnfig5.LLB=1 and eretnc instruction are implemented to without accidentally clearing LL-bit when returning from an interrupt, exception, or error trap, + XPA feature together with extended versions of CPx registers is introduced, which needs to have mfhc0/mthc0 instructions available. So due to these changes GNU GCC provides an extended instructions set support for MIPS32/64 Release 5 by default like eretnc/mfhc0/mthc0. Even though the architecture alteration isn't that big, it still worth to be taken into account by the kernel software. Finally we can't deny that some optimization/limitations might be found in future and implemented on some level in kernel or compiler. In this case having even intermediate MIPS architecture releases support would be more than useful. So the most of the changes provided by this commit can be split into either compile- or runtime configs related. The compile-time related changes are caused by adding the new CONFIG_CPU_MIPS32_R5/CONFIG_CPU_MIPSR5 configs and concern the code activating MIPSR2 or MIPSR6 already implemented features (like eretnc/LLbit, mthc0/mfhc0). In addition CPU_HAS_MSA can be now freely enabled for MIPS32/64 release 5 based platforms as this is done for CPU_MIPS32_R6 CPUs. The runtime changes concerns the features which are handled with respect to the MIPS ISA revision detected at run-time by means of CP0.Config.{AT,AR} bits. Alas these fields can be used to detect either r1 or r2 or r6 releases. But since we know which CPUs in fact support the R5 arch, we can manually set MIPS_CPU_ISA_M32R5/MIPS_CPU_ISA_M64R5 bit of c->isa_level and then use cpu_has_mips32r5/cpu_has_mips64r5 where it's appropriate. Since XPA/EVA provide too complex alterationss and to have them used with MIPS32 Release 2 charged kernels (for compatibility with current platform configs) they are left to be setup as a separate kernel configs. Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru> Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Paul Burton <paulburton@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* MIPS: Unconditionally specify '-EB' or '-EL'Nathan Chancellor2020-05-121-25/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This was all done to work around a GCC bug that has been fixed after 4.2. The kernel requires GCC 4.6 or newer so remove all of these hacks and just use the traditional flags. $ mips64-linux-gcc --version | head -n1 mips64-linux-gcc (GCC) 4.6.3 $ mips64-linux-gcc -EB -dM -E -C -x c /dev/null | grep MIPSE #define MIPSEB 1 #define __MIPSEB__ 1 #define _MIPSEB 1 #define __MIPSEB 1 $ mips64-linux-gcc -EL -dM -E -C -x c /dev/null | grep MIPSE #define __MIPSEL__ 1 #define MIPSEL 1 #define _MIPSEL 1 #define __MIPSEL 1 This is necessary when converting the MIPS VDSO to use $(LD) instead of $(CC) to link because the OUTPUT_FORMAT is defaulted to little endian and only flips to big endian when '-EB' is set on the command line. There is no issue currently because the compiler explicitly passes '-EB' or '-EL' to the linker regardless of whether or not it was provided by the user. Passing '-v' to VDSO_LDFLAGS shows: <gcc_prefix>/libexec/gcc/mips64-linux/9.3.0/collect2 ... -EB ... even though '-EB' is nowhere to be found in KBUILD_CFLAGS. The VDSO Makefile already supports getting '-EB' or '-EL' from KBUILD_CFLAGS through a filter directive but '-EB' or '-EL' is not always present. If we do not do this, we will see the following error when compiling for big endian: $ make -j$(nproc) ARCH=mips CROSS_COMPILE=mips64-linux- \ 64r2el_defconfig arch/mips/vdso/ ... mips64-linux-ld: arch/mips/vdso/elf.o: compiled for a big endian system and target is little endian mips64-linux-ld: arch/mips/vdso/elf.o: endianness incompatible with that of the selected emulation mips64-linux-ld: failed to merge target specific data of file arch/mips/vdso/elf.o ... Remove this legacy hack and just use '-EB' and '-EL' unconditionally. Reported-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* MIPS: Remove support for LASATThomas Bogendoerfer2020-05-091-7/+0
| | | | | | All LASAT has probably gone bad, so let's remove Linux support. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* MIPS: Truncate link address into 32bit for 32bit kernelJiaxun Yang2020-05-071-1/+12
| | | | | | | | | | | | | | | | | LLD failed to link vmlinux with 64bit load address for 32bit ELF while bfd will strip 64bit address into 32bit silently. To fix LLD build, we should truncate load address provided by platform into 32bit for 32bit kernel. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Link: https://github.com/ClangBuiltLinux/linux/issues/786 Link: https://sourceware.org/bugzilla/show_bug.cgi?id=25784 Reviewed-by: Fangrui Song <maskray@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Tested-by: Nathan Chancellor <natechancellor@gmail.com> Cc: Maciej W. Rozycki <macro@linux-mips.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds2019-11-251-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull crypto updates from Herbert Xu: "API: - Add library interfaces of certain crypto algorithms for WireGuard - Remove the obsolete ablkcipher and blkcipher interfaces - Move add_early_randomness() out of rng_mutex Algorithms: - Add blake2b shash algorithm - Add blake2s shash algorithm - Add curve25519 kpp algorithm - Implement 4 way interleave in arm64/gcm-ce - Implement ciphertext stealing in powerpc/spe-xts - Add Eric Biggers's scalar accelerated ChaCha code for ARM - Add accelerated 32r2 code from Zinc for MIPS - Add OpenSSL/CRYPTOGRAMS poly1305 implementation for ARM and MIPS Drivers: - Fix entropy reading failures in ks-sa - Add support for sam9x60 in atmel - Add crypto accelerator for amlogic GXL - Add sun8i-ce Crypto Engine - Add sun8i-ss cryptographic offloader - Add a host of algorithms to inside-secure - Add NPCM RNG driver - add HiSilicon HPRE accelerator - Add HiSilicon TRNG driver" * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (285 commits) crypto: vmx - Avoid weird build failures crypto: lib/chacha20poly1305 - use chacha20_crypt() crypto: x86/chacha - only unregister algorithms if registered crypto: chacha_generic - remove unnecessary setkey() functions crypto: amlogic - enable working on big endian kernel crypto: sun8i-ce - enable working on big endian crypto: mips/chacha - select CRYPTO_SKCIPHER, not CRYPTO_BLKCIPHER hwrng: ks-sa - Enable COMPILE_TEST crypto: essiv - remove redundant null pointer check before kfree crypto: atmel-aes - Change data type for "lastc" buffer crypto: atmel-tdes - Set the IV after {en,de}crypt crypto: sun4i-ss - fix big endian issues crypto: sun4i-ss - hide the Invalid keylen message crypto: sun4i-ss - use crypto_ahash_digestsize crypto: sun4i-ss - remove dependency on not 64BIT crypto: sun4i-ss - Fix 64-bit size_t warnings on sun4i-ss-hash.c MAINTAINERS: Add maintainer for HiSilicon SEC V2 driver crypto: hisilicon - add DebugFS for HiSilicon SEC Documentation: add DebugFS doc for HiSilicon SEC crypto: hisilicon - add SRIOV for HiSilicon SEC ...
| * crypto: mips/chacha - wire up accelerated 32r2 code from ZincArd Biesheuvel2019-11-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This integrates the accelerated MIPS 32r2 implementation of ChaCha into both the API and library interfaces of the kernel crypto stack. The significance of this is that, in addition to becoming available as an accelerated library implementation, it can also be used by existing crypto API code such as Adiantum (for block encryption on ultra low performance cores) or IPsec using chacha20poly1305. These are use cases that have already opted into using the abstract crypto API. In order to support Adiantum, the core assembler routine has been adapted to take the round count as a function argument rather than hardcoding it to 20. Co-developed-by: René van Dorst <opensource@vdorst.com> Signed-off-by: René van Dorst <opensource@vdorst.com> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* | MIPS: Check Loongson3 LL/SC errata workaround correctnessPaul Burton2019-10-071-0/+3
|/ | | | | | | | | | | | | | | | | | | | | | | | When Loongson3 LL/SC errata workarounds are enabled (ie. CONFIG_CPU_LOONGSON3_WORKAROUNDS=y) run a tool to scan through the compiled kernel & ensure that the workaround is applied correctly. That is, ensure that: - Every LL or LLD instruction is preceded by a sync instruction. - Any branches from within an LL/SC loop to outside of that loop target a sync instruction. Reasoning for these conditions can be found by reading the comment above the definition of __SYNC_loongson3_war in arch/mips/include/asm/sync.h. This tool will help ensure that we don't inadvertently introduce code paths that miss the required workarounds. Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: Huacai Chen <chenhc@lemote.com> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: linux-kernel@vger.kernel.org
* MIPS: Remove unused R8000 CPU supportPaul Burton2019-07-231-1/+0
| | | | | | | | | Our R8000 CPU support can only be included if a system selects CONFIG_SYS_HAS_CPU_R8000. No system does, making all R8000-related CPU support dead code. Remove it. Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org
* MIPS: Remove unused R5432 CPU supportPaul Burton2019-07-231-2/+0
| | | | | | | | | Our R5432 CPU support can only be included if a system selects CONFIG_SYS_HAS_CPU_R5432. No system does, making all R5432-related CPU support dead code. Remove it. Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org
* MIPS: Remove unused R4300 CPU supportPaul Burton2019-07-231-1/+0
| | | | | | | | | Our R4300 CPU support can only be included if a system selects CONFIG_SYS_HAS_CPU_R4300. No system does, making all R4300-related CPU support dead code. Remove it. Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org
* MIPS: have "plain" make calls build dtbs for selected platformsCedric Hombourger2019-06-201-1/+2
| | | | | | | | | | | | | scripts/package/builddeb calls "make dtbs_install" after executing a plain make (i.e. no build targets specified). It will fail if dtbs were not built beforehand. Match the arm64 architecture where DTBs get built by the "all" target. Signed-off-by: Cedric Hombourger <Cedric_Hombourger@mentor.com> [paul.burton@mips.com: s/builddep/builddeb] Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: stable@vger.kernel.org # v4.1+
* MIPS: Add GINVT instruction helpersPaul Burton2019-02-041-0/+2
| | | | | | | | | | | | | | Add a family of ginvt_* functions making it easy to emit a GINVT instruction to globally invalidate TLB entries. We make use of the _ASM_MACRO infrastructure to support emitting the instructions even if the assembler isn't new enough to support them natively. An associated STYPE_GINV definition & sync_ginv() function are added to emit a sync instruction of type 0x14, which operates as a completion barrier for these new GINVT (and GINVI) instructions. Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org
* mips: generate uapi header and system call table filesFiroz Khan2018-12-141-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | System call table generation script must be run to gener- ate unistd_(nr_)n64/n32/o32.h and syscall_table_32_o32/ 64_n64/64_n32/64-o32.h files. This patch will have changes which will invokes the script. This patch will generate unistd_(nr_)n64/n32/o32.h and syscall_table_32_o32/64_n64/64-n32/64-o32.h files by the syscall table generation script invoked by parisc/Make- file and the generated files against the removed files must be identical. The generated uapi header file will be included in uapi/- asm/unistd.h and generated system call table header file will be included by kernel/scall32-o32/64-n64/64-n32/- 64-o32.Sfile. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: y2038@lists.linaro.org Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: arnd@arndb.de Cc: deepa.kernel@gmail.com Cc: marcin.juszkiewicz@linaro.org
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