182 lines
5.9 KiB
Makefile
182 lines
5.9 KiB
Makefile
# 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.
|
|
#
|
|
# 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__
|
|
ifndef CONFIG_AS_IS_LLVM
|
|
KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf))
|
|
endif
|
|
KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -O2 -mpacked-stack
|
|
KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY
|
|
KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null-pointer-checks -msoft-float -mbackchain
|
|
KBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronous-unwind-tables
|
|
KBUILD_CFLAGS_DECOMPRESSOR += -ffreestanding
|
|
KBUILD_CFLAGS_DECOMPRESSOR += -fno-stack-protector
|
|
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,))
|
|
KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_CC_NO_ARRAY_BOUNDS),-Wno-array-bounds)
|
|
|
|
UTS_MACHINE := s390x
|
|
STACK_SIZE := $(if $(CONFIG_KASAN),65536,16384)
|
|
CHECKFLAGS += -D__s390__ -D__s390x__
|
|
|
|
export LD_BFD
|
|
|
|
mflags-$(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-$(CONFIG_MARCH_Z15) := -march=z15
|
|
mflags-$(CONFIG_MARCH_Z16) := -march=z16
|
|
|
|
export CC_FLAGS_MARCH := $(mflags-y)
|
|
|
|
aflags-y += $(mflags-y)
|
|
cflags-y += $(mflags-y)
|
|
|
|
cflags-$(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-$(CONFIG_MARCH_Z15_TUNE) += -mtune=z15
|
|
cflags-$(CONFIG_MARCH_Z16_TUNE) += -mtune=z16
|
|
|
|
cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include
|
|
|
|
#
|
|
# Prevent tail-call optimizations, to get clearer backtraces:
|
|
#
|
|
cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
|
|
|
|
KBUILD_AFLAGS_DECOMPRESSOR += $(aflags-y)
|
|
KBUILD_CFLAGS_DECOMPRESSOR += $(cflags-y)
|
|
|
|
ifneq ($(call cc-option,-mstack-size=8192 -mstack-guard=128),)
|
|
CC_FLAGS_CHECK_STACK := -mstack-size=$(STACK_SIZE)
|
|
ifeq ($(call cc-option,-mstack-size=8192),)
|
|
CC_FLAGS_CHECK_STACK += -mstack-guard=$(CONFIG_STACK_GUARD)
|
|
endif
|
|
export CC_FLAGS_CHECK_STACK
|
|
cflags-$(CONFIG_CHECK_STACK) += $(CC_FLAGS_CHECK_STACK)
|
|
endif
|
|
|
|
ifdef CONFIG_EXPOLINE
|
|
ifdef CONFIG_EXPOLINE_EXTERN
|
|
KBUILD_LDFLAGS_MODULE += arch/s390/lib/expoline/expoline.o
|
|
CC_FLAGS_EXPOLINE := -mindirect-branch=thunk-extern
|
|
CC_FLAGS_EXPOLINE += -mfunction-return=thunk-extern
|
|
else
|
|
CC_FLAGS_EXPOLINE := -mindirect-branch=thunk
|
|
CC_FLAGS_EXPOLINE += -mfunction-return=thunk
|
|
endif
|
|
CC_FLAGS_EXPOLINE += -mindirect-branch-table
|
|
export CC_FLAGS_EXPOLINE
|
|
cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_EXPOLINE
|
|
aflags-y += -DCC_USING_EXPOLINE
|
|
endif
|
|
|
|
ifdef CONFIG_FUNCTION_TRACER
|
|
ifeq ($(call cc-option,-mfentry -mnop-mcount),)
|
|
# make use of hotpatch feature if the compiler supports it
|
|
cc_hotpatch := -mhotpatch=0,3
|
|
ifneq ($(call cc-option,$(cc_hotpatch)),)
|
|
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 += -mpacked-stack -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
|
|
|
|
libs-y += arch/s390/lib/
|
|
drivers-y += drivers/s390/
|
|
|
|
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:
|
|
$(call cmd,install)
|
|
|
|
bzImage: vmlinux
|
|
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
|
|
|
|
zfcpdump:
|
|
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
|
|
|
|
vdso_install:
|
|
$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
|
|
|
|
archheaders:
|
|
$(Q)$(MAKE) $(build)=$(syscalls) uapi
|
|
|
|
archprepare:
|
|
$(Q)$(MAKE) $(build)=$(syscalls) kapi
|
|
$(Q)$(MAKE) $(build)=$(tools) kapi
|
|
ifeq ($(KBUILD_EXTMOD),)
|
|
# We need to generate vdso-offsets.h before compiling certain files in kernel/.
|
|
# In order to do that, we should use the archprepare target, but we can't since
|
|
# asm-offsets.h is included in some files used to generate vdso-offsets.h, and
|
|
# asm-offsets.h is built in prepare0, for which archprepare is a dependency.
|
|
# Therefore we need to generate the header after prepare0 has been made, hence
|
|
# this hack.
|
|
prepare: vdso_prepare
|
|
vdso_prepare: prepare0
|
|
$(Q)$(MAKE) $(build)=arch/s390/kernel/vdso64 include/generated/vdso64-offsets.h
|
|
$(if $(CONFIG_COMPAT),$(Q)$(MAKE) \
|
|
$(build)=arch/s390/kernel/vdso32 include/generated/vdso32-offsets.h)
|
|
|
|
ifdef CONFIG_EXPOLINE_EXTERN
|
|
modules_prepare: expoline_prepare
|
|
expoline_prepare:
|
|
$(Q)$(MAKE) $(build)=arch/s390/lib/expoline arch/s390/lib/expoline/expoline.o
|
|
endif
|
|
endif
|
|
|
|
# Don't use tabs in echo arguments
|
|
define archhelp
|
|
echo '* bzImage - Kernel image for IPL ($(boot)/bzImage)'
|
|
echo ' install - Install kernel using'
|
|
echo ' (your) ~/bin/$(INSTALLKERNEL) or'
|
|
echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
|
|
echo ' install to $$(INSTALL_PATH)'
|
|
endef
|