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181 lines
6.0 KiB
181 lines
6.0 KiB
# SPDX-License-Identifier: GPL-2.0 |
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# |
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# s390/Makefile |
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# |
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# This file is included by the global makefile so that you can add your own |
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# architecture-specific flags and dependencies. Remember to do have actions |
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# for "archclean" and "archdep" for cleaning up and making dependencies for |
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# this architecture |
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# |
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# Copyright (C) 1994 by Linus Torvalds |
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# |
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LD_BFD := elf64-s390 |
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KBUILD_LDFLAGS := -m elf64_s390 |
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KBUILD_AFLAGS_MODULE += -fPIC |
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KBUILD_CFLAGS_MODULE += -fPIC |
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KBUILD_AFLAGS += -m64 |
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KBUILD_CFLAGS += -m64 |
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ifeq ($(CONFIG_RELOCATABLE),y) |
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KBUILD_CFLAGS += -fPIE |
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LDFLAGS_vmlinux := -pie |
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endif |
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aflags_dwarf := -Wa,-gdwarf-2 |
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KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -D__ASSEMBLY__ |
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KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf)) |
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KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -O2 |
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KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY |
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KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null-pointer-checks -msoft-float -mbackchain |
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KBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronous-unwind-tables |
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KBUILD_CFLAGS_DECOMPRESSOR += -ffreestanding |
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KBUILD_CFLAGS_DECOMPRESSOR += -fno-stack-protector |
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KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disable-warning, address-of-packed-member) |
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KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),-g) |
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KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO_DWARF4), $(call cc-option, -gdwarf-4,)) |
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UTS_MACHINE := s390x |
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STACK_SIZE := $(if $(CONFIG_KASAN),65536,16384) |
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CHECKFLAGS += -D__s390__ -D__s390x__ |
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export LD_BFD |
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mflags-$(CONFIG_MARCH_Z900) := -march=z900 |
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mflags-$(CONFIG_MARCH_Z990) := -march=z990 |
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mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109 |
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mflags-$(CONFIG_MARCH_Z10) := -march=z10 |
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mflags-$(CONFIG_MARCH_Z196) := -march=z196 |
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mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12 |
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mflags-$(CONFIG_MARCH_Z13) := -march=z13 |
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mflags-$(CONFIG_MARCH_Z14) := -march=z14 |
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mflags-$(CONFIG_MARCH_Z15) := -march=z15 |
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export CC_FLAGS_MARCH := $(mflags-y) |
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aflags-y += $(mflags-y) |
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cflags-y += $(mflags-y) |
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cflags-$(CONFIG_MARCH_Z900_TUNE) += -mtune=z900 |
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cflags-$(CONFIG_MARCH_Z990_TUNE) += -mtune=z990 |
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cflags-$(CONFIG_MARCH_Z9_109_TUNE) += -mtune=z9-109 |
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cflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10 |
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cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196 |
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cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12 |
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cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13 |
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cflags-$(CONFIG_MARCH_Z14_TUNE) += -mtune=z14 |
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cflags-$(CONFIG_MARCH_Z15_TUNE) += -mtune=z15 |
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cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include |
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# |
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# Prevent tail-call optimizations, to get clearer backtraces: |
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# |
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cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls |
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ifneq ($(call cc-option,-mpacked-stack -mbackchain -msoft-float),) |
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cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK |
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aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK |
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endif |
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KBUILD_AFLAGS_DECOMPRESSOR += $(aflags-y) |
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KBUILD_CFLAGS_DECOMPRESSOR += $(cflags-y) |
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ifneq ($(call cc-option,-mstack-size=8192 -mstack-guard=128),) |
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cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE) |
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ifeq ($(call cc-option,-mstack-size=8192),) |
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cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD) |
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endif |
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endif |
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ifdef CONFIG_EXPOLINE |
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ifneq ($(call cc-option,$(CC_FLAGS_MARCH) -mindirect-branch=thunk),) |
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CC_FLAGS_EXPOLINE := -mindirect-branch=thunk |
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CC_FLAGS_EXPOLINE += -mfunction-return=thunk |
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CC_FLAGS_EXPOLINE += -mindirect-branch-table |
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export CC_FLAGS_EXPOLINE |
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cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_EXPOLINE |
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aflags-y += -DCC_USING_EXPOLINE |
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endif |
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endif |
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ifdef CONFIG_FUNCTION_TRACER |
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ifeq ($(call cc-option,-mfentry -mnop-mcount),) |
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# make use of hotpatch feature if the compiler supports it |
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cc_hotpatch := -mhotpatch=0,3 |
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ifneq ($(call cc-option,$(cc_hotpatch)),) |
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CC_FLAGS_FTRACE := $(cc_hotpatch) |
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KBUILD_AFLAGS += -DCC_USING_HOTPATCH |
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KBUILD_CFLAGS += -DCC_USING_HOTPATCH |
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endif |
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endif |
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endif |
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# Test CFI features of binutils |
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cfi := $(call as-instr,.cfi_startproc\n.cfi_val_offset 15$(comma)-160\n.cfi_endproc,-DCONFIG_AS_CFI_VAL_OFFSET=1) |
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KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) |
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KBUILD_CFLAGS += -pipe -Wno-sign-compare |
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KBUILD_CFLAGS += -fno-asynchronous-unwind-tables $(cfi) |
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KBUILD_AFLAGS += $(aflags-y) $(cfi) |
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export KBUILD_AFLAGS_DECOMPRESSOR |
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export KBUILD_CFLAGS_DECOMPRESSOR |
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OBJCOPYFLAGS := -O binary |
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head-y := arch/s390/kernel/head64.o |
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libs-y += arch/s390/lib/ |
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drivers-y += drivers/s390/ |
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boot := arch/s390/boot |
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syscalls := arch/s390/kernel/syscalls |
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tools := arch/s390/tools |
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all: bzImage |
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#KBUILD_IMAGE is necessary for packaging targets like rpm-pkg, deb-pkg... |
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KBUILD_IMAGE := $(boot)/bzImage |
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install: |
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sh -x $(srctree)/$(boot)/install.sh $(KERNELRELEASE) $(KBUILD_IMAGE) \ |
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System.map "$(INSTALL_PATH)" |
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bzImage: vmlinux |
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
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zfcpdump: |
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
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vdso_install: |
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$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ |
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archclean: |
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$(Q)$(MAKE) $(clean)=$(boot) |
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$(Q)$(MAKE) $(clean)=$(tools) |
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archheaders: |
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$(Q)$(MAKE) $(build)=$(syscalls) uapi |
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archprepare: |
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$(Q)$(MAKE) $(build)=$(syscalls) kapi |
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$(Q)$(MAKE) $(build)=$(tools) kapi |
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ifeq ($(KBUILD_EXTMOD),) |
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# We need to generate vdso-offsets.h before compiling certain files in kernel/. |
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# In order to do that, we should use the archprepare target, but we can't since |
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# asm-offsets.h is included in some files used to generate vdso-offsets.h, and |
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# asm-offsets.h is built in prepare0, for which archprepare is a dependency. |
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# Therefore we need to generate the header after prepare0 has been made, hence |
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# this hack. |
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prepare: vdso_prepare |
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vdso_prepare: prepare0 |
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$(Q)$(MAKE) $(build)=arch/s390/kernel/vdso64 include/generated/vdso64-offsets.h |
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$(if $(CONFIG_COMPAT),$(Q)$(MAKE) \ |
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$(build)=arch/s390/kernel/vdso32 include/generated/vdso32-offsets.h) |
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endif |
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# Don't use tabs in echo arguments |
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define archhelp |
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echo '* bzImage - Kernel image for IPL ($(boot)/bzImage)' |
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echo ' install - Install kernel using' |
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echo ' (your) ~/bin/$(INSTALLKERNEL) or' |
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echo ' (distribution) /sbin/$(INSTALLKERNEL) or' |
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echo ' install to $$(INSTALL_PATH)' |
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endef
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