kernel/linux.git/arch/csky/Makefile, branch v6.12.80

kbuild: remove head-y syntax

2022-10-02T09:06:03+00:00

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 Tested-by: Nick Desaulniers Reviewed-by: Nicolas Schier

csky: Move $(core-y) into arch/csky/Kbuild

2022-05-13T07:09:28+00:00

Use the standard obj-y form to specify the sub-directories under arch/csky/. Only leave core-y += arch/csky/$(CSKYABI)/ there. Signed-off-by: Masahiro Yamada Signed-off-by: Guo Ren

csky: Remove unused core-y for dts

2022-05-13T06:46:04+00:00

This line was used for embedding a DT into vmlinux. Since commit c4c14c3bd177 ("csky: remove builtin-dtb Kbuild"), DT for csky is just a separate blob. It is covered by the generic rule in the top Makefile: ifdef CONFIG_OF_EARLY_FLATTREE all: dtbs endif Signed-off-by: Masahiro Yamada Signed-off-by: Guo Ren

kbuild: use more subdir- for visiting subdirectories while cleaning

2021-10-24T04:49:46+00:00

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 Reviewed-by: Kees Cook Acked-by: Geert Uytterhoeven Acked-by: Michael Ellerman (powerpc)

csky: Fixup calltrace panic

2020-05-13T09:55:06+00:00

The implementation of show_stack will panic with wrong fp: addr = *fp++; because the fp isn't checked properly. The current implementations of show_stack, wchan and stack_trace haven't been designed properly, so just deprecate them. This patch is a reference to riscv's way, all codes are modified from arm's. The patch is passed with: - cat /proc//stack - cat /proc//wchan - echo c > /proc/sysrq-trigger Signed-off-by: Guo Ren

kconfig: make arch/*/configs/defconfig the default of KBUILD_DEFCONFIG

2019-06-09T06:08:18+00:00

Until recently, if KBUILD_DEFCONFIG was not set by the arch Makefile, the default path arch/*/defconfig was used. The last users of the default are gone by the following commits: - Commit f3e20ad67b4c ("s390: move arch/s390/defconfig to arch/s390/configs/defconfig") - Commit 986a13769c4b ("alpha: move arch/alpha/defconfig to arch/alpha/configs/defconfig") Let's set arch/*/configs/defconfig as a new default. This saves KBUILD_DEFCONFIG for some architectures. Signed-off-by: Masahiro Yamada Acked-by: Catalin Marinas

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

csky: Fixup vdsp&fpu issues in kernel

2019-04-22T05:44:57+00:00

This fixup is continue to commit 35ff802af1c4 (csky: fixup remove vdsp implement for kernel.) and in that patch I didn't finish the job. We must forbid gcc to generate any vdsp & fpu instructions and remove vdsp asm in memmove.S. eg: For GCC it's -mcpu=ck860 and For AS it's -Wa,-mcpu=ck860fv Signed-off-by: Guo Ren

csky: stacktrace supported.

2018-12-31T15:12:22+00:00

The gcc option "-mbacktrace" will push fp(r8),lr into stack and we could unwind the stack with: fp = *fp lr = (unsigned int *)fp[1] Signed-off-by: Guo Ren

csky: use common dtb build rules

2018-11-01T02:52:27+00:00

Remove the Kbuild rules in arch/csky and use common dtb build rules. This modification is based on: commit 37c8a5fafa3b ("kbuild: consolidate Devicetree dtb build rules") Signed-off-by: Guo Ren Reviewed-by: Rob Herring Acked-by: Arnd Bergmann