diff options
Diffstat (limited to 'arch/s390/Makefile')
| -rw-r--r-- | arch/s390/Makefile | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/arch/s390/Makefile b/arch/s390/Makefile new file mode 100644 index 000000000..39ffcd438 --- /dev/null +++ b/arch/s390/Makefile @@ -0,0 +1,191 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# s390/Makefile +# +# This file is included by the global makefile so that you can add your own +# architecture-specific flags and dependencies. Remember to do have actions +# for "archclean" and "archdep" for cleaning up and making dependencies for +# this architecture +# +# Copyright (C) 1994 by Linus Torvalds +# + +LD_BFD := elf64-s390 +KBUILD_LDFLAGS := -m elf64_s390 +KBUILD_AFLAGS_MODULE += -fPIC +KBUILD_CFLAGS_MODULE += -fPIC +KBUILD_AFLAGS += -m64 +KBUILD_CFLAGS += -m64 +ifeq ($(CONFIG_RELOCATABLE),y) +KBUILD_CFLAGS += -fPIE +LDFLAGS_vmlinux := -pie +endif +aflags_dwarf := -Wa,-gdwarf-2 +KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -D__ASSEMBLY__ +KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf)) +KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -O2 +KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY +KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null-pointer-checks -msoft-float +KBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronous-unwind-tables +KBUILD_CFLAGS_DECOMPRESSOR += -ffreestanding +KBUILD_CFLAGS_DECOMPRESSOR += -fno-stack-protector +KBUILD_CFLAGS_DECOMPRESSOR += -fPIE +KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disable-warning, address-of-packed-member) +KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),-g) +KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO_DWARF4), $(call cc-option, -gdwarf-4,)) + +ifdef CONFIG_CC_IS_GCC + ifeq ($(call cc-ifversion, -ge, 1200, y), y) + ifeq ($(call cc-ifversion, -lt, 1300, y), y) + KBUILD_CFLAGS += $(call cc-disable-warning, array-bounds) + KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disable-warning, array-bounds) + endif + endif +endif + +UTS_MACHINE := s390x +STACK_SIZE := $(if $(CONFIG_KASAN),65536,16384) +CHECKFLAGS += -D__s390__ -D__s390x__ + +export LD_BFD + +mflags-$(CONFIG_MARCH_Z900) := -march=z900 +mflags-$(CONFIG_MARCH_Z990) := -march=z990 +mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109 +mflags-$(CONFIG_MARCH_Z10) := -march=z10 +mflags-$(CONFIG_MARCH_Z196) := -march=z196 +mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12 +mflags-$(CONFIG_MARCH_Z13) := -march=z13 +mflags-$(CONFIG_MARCH_Z14) := -march=z14 +mflags-$(CONFIG_MARCH_Z15) := -march=z15 + +export CC_FLAGS_MARCH := $(mflags-y) + +aflags-y += $(mflags-y) +cflags-y += $(mflags-y) + +cflags-$(CONFIG_MARCH_Z900_TUNE) += -mtune=z900 +cflags-$(CONFIG_MARCH_Z990_TUNE) += -mtune=z990 +cflags-$(CONFIG_MARCH_Z9_109_TUNE) += -mtune=z9-109 +cflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10 +cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196 +cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12 +cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13 +cflags-$(CONFIG_MARCH_Z14_TUNE) += -mtune=z14 +cflags-$(CONFIG_MARCH_Z15_TUNE) += -mtune=z15 + +cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include + +# +# Prevent tail-call optimizations, to get clearer backtraces: +# +cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls + +ifeq ($(call cc-option-yn,-mpacked-stack -mbackchain -msoft-float),y) +cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK +aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK +endif + +KBUILD_AFLAGS_DECOMPRESSOR += $(aflags-y) +KBUILD_CFLAGS_DECOMPRESSOR += $(cflags-y) + +ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y) +cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE) +ifneq ($(call cc-option-yn,-mstack-size=8192),y) +cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD) +endif +endif + +ifdef CONFIG_WARN_DYNAMIC_STACK + ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y) + KBUILD_CFLAGS += -mwarn-dynamicstack + KBUILD_CFLAGS_DECOMPRESSOR += -mwarn-dynamicstack + endif +endif + +ifdef CONFIG_EXPOLINE + ifeq ($(call cc-option-yn,$(CC_FLAGS_MARCH) -mindirect-branch=thunk),y) + CC_FLAGS_EXPOLINE := -mindirect-branch=thunk + CC_FLAGS_EXPOLINE += -mfunction-return=thunk + CC_FLAGS_EXPOLINE += -mindirect-branch-table + export CC_FLAGS_EXPOLINE + cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_EXPOLINE + aflags-y += -DCC_USING_EXPOLINE + endif +endif + +ifdef CONFIG_FUNCTION_TRACER + ifeq ($(call cc-option-yn,-mfentry -mnop-mcount),n) + # make use of hotpatch feature if the compiler supports it + cc_hotpatch := -mhotpatch=0,3 + ifeq ($(call cc-option-yn,$(cc_hotpatch)),y) + CC_FLAGS_FTRACE := $(cc_hotpatch) + KBUILD_AFLAGS += -DCC_USING_HOTPATCH + KBUILD_CFLAGS += -DCC_USING_HOTPATCH + endif + endif +endif + +# Test CFI features of binutils +cfi := $(call as-instr,.cfi_startproc\n.cfi_val_offset 15$(comma)-160\n.cfi_endproc,-DCONFIG_AS_CFI_VAL_OFFSET=1) + +KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) +KBUILD_CFLAGS += -pipe -Wno-sign-compare +KBUILD_CFLAGS += -fno-asynchronous-unwind-tables $(cfi) +KBUILD_AFLAGS += $(aflags-y) $(cfi) +export KBUILD_AFLAGS_DECOMPRESSOR +export KBUILD_CFLAGS_DECOMPRESSOR + +OBJCOPYFLAGS := -O binary + +head-y := arch/s390/kernel/head64.o + +# See arch/s390/Kbuild for content of core part of the kernel +core-y += arch/s390/ + +libs-y += arch/s390/lib/ +drivers-y += drivers/s390/ + +# must be linked after kernel +drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/ + +boot := arch/s390/boot +syscalls := arch/s390/kernel/syscalls +tools := arch/s390/tools + +all: bzImage + +#KBUILD_IMAGE is necessary for packaging targets like rpm-pkg, deb-pkg... +KBUILD_IMAGE := $(boot)/bzImage + +install: + $(Q)$(MAKE) $(build)=$(boot) $@ + +bzImage: vmlinux + $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ + +zfcpdump: + $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ + +vdso_install: + $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ + +archclean: + $(Q)$(MAKE) $(clean)=$(boot) + $(Q)$(MAKE) $(clean)=$(tools) + +archheaders: + $(Q)$(MAKE) $(build)=$(syscalls) uapi + +archprepare: + $(Q)$(MAKE) $(build)=$(syscalls) kapi + $(Q)$(MAKE) $(build)=$(tools) kapi + +# Don't use tabs in echo arguments +define archhelp + echo '* bzImage - Kernel image for IPL ($(boot)/bzImage)' + echo ' install - Install kernel using' + echo ' (your) ~/bin/$(INSTALLKERNEL) or' + echo ' (distribution) /sbin/$(INSTALLKERNEL) or' + echo ' install to $$(INSTALL_PATH)' +endef |