1# 2# s390/Makefile 3# 4# This file is included by the global makefile so that you can add your own 5# architecture-specific flags and dependencies. Remember to do have actions 6# for "archclean" and "archdep" for cleaning up and making dependencies for 7# this architecture 8# 9# This file is subject to the terms and conditions of the GNU General Public 10# License. See the file "COPYING" in the main directory of this archive 11# for more details. 12# 13# Copyright (C) 1994 by Linus Torvalds 14# 15 16LD_BFD := elf64-s390 17LDFLAGS := -m elf64_s390 18KBUILD_AFLAGS_MODULE += -fPIC 19KBUILD_CFLAGS_MODULE += -fPIC 20KBUILD_CFLAGS += -m64 21KBUILD_AFLAGS += -m64 22UTS_MACHINE := s390x 23STACK_SIZE := 16384 24CHECKFLAGS += -D__s390__ -D__s390x__ 25 26export LD_BFD 27 28mflags-$(CONFIG_MARCH_Z900) := -march=z900 29mflags-$(CONFIG_MARCH_Z990) := -march=z990 30mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109 31mflags-$(CONFIG_MARCH_Z10) := -march=z10 32mflags-$(CONFIG_MARCH_Z196) := -march=z196 33mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12 34mflags-$(CONFIG_MARCH_Z13) := -march=z13 35mflags-$(CONFIG_MARCH_Z14) := -march=z14 36 37export CC_FLAGS_MARCH := $(mflags-y) 38 39aflags-y += $(mflags-y) 40cflags-y += $(mflags-y) 41 42cflags-$(CONFIG_MARCH_Z900_TUNE) += -mtune=z900 43cflags-$(CONFIG_MARCH_Z990_TUNE) += -mtune=z990 44cflags-$(CONFIG_MARCH_Z9_109_TUNE) += -mtune=z9-109 45cflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10 46cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196 47cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12 48cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13 49cflags-$(CONFIG_MARCH_Z14_TUNE) += -mtune=z14 50 51cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include 52 53#KBUILD_IMAGE is necessary for make rpm 54KBUILD_IMAGE :=arch/s390/boot/image 55 56# 57# Prevent tail-call optimizations, to get clearer backtraces: 58# 59cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls 60 61# old style option for packed stacks 62ifeq ($(call cc-option-yn,-mkernel-backchain),y) 63cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK 64aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 65endif 66 67# new style option for packed stacks 68ifeq ($(call cc-option-yn,-mpacked-stack),y) 69cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK 70aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 71endif 72 73ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y) 74cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE) 75ifneq ($(call cc-option-yn,-mstack-size=8192),y) 76cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD) 77endif 78endif 79 80ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y) 81cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack 82endif 83 84ifdef CONFIG_EXPOLINE 85 ifeq ($(call cc-option-yn,$(CC_FLAGS_MARCH) -mindirect-branch=thunk),y) 86 CC_FLAGS_EXPOLINE := -mindirect-branch=thunk 87 CC_FLAGS_EXPOLINE += -mfunction-return=thunk 88 CC_FLAGS_EXPOLINE += -mindirect-branch-table 89 export CC_FLAGS_EXPOLINE 90 cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_EXPOLINE 91 endif 92endif 93 94ifdef CONFIG_FUNCTION_TRACER 95# make use of hotpatch feature if the compiler supports it 96cc_hotpatch := -mhotpatch=0,3 97ifeq ($(call cc-option-yn,$(cc_hotpatch)),y) 98CC_FLAGS_FTRACE := $(cc_hotpatch) 99KBUILD_AFLAGS += -DCC_USING_HOTPATCH 100KBUILD_CFLAGS += -DCC_USING_HOTPATCH 101endif 102endif 103 104KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) 105KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare 106KBUILD_AFLAGS += $(aflags-y) 107 108OBJCOPYFLAGS := -O binary 109 110head-y := arch/s390/kernel/head.o 111head-y += arch/s390/kernel/head64.o 112 113# See arch/s390/Kbuild for content of core part of the kernel 114core-y += arch/s390/ 115 116libs-y += arch/s390/lib/ 117drivers-y += drivers/s390/ 118 119# must be linked after kernel 120drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/ 121 122boot := arch/s390/boot 123tools := arch/s390/tools 124 125all: image bzImage 126 127install: vmlinux 128 $(Q)$(MAKE) $(build)=$(boot) $@ 129 130image bzImage: vmlinux 131 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 132 133zfcpdump: 134 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 135 136vdso_install: 137 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ 138 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ 139 140archclean: 141 $(Q)$(MAKE) $(clean)=$(boot) 142 $(Q)$(MAKE) $(clean)=$(tools) 143 144archprepare: 145 $(Q)$(MAKE) $(build)=$(tools) include/generated/facilities.h 146 147# Don't use tabs in echo arguments 148define archhelp 149 echo '* image - Kernel image for IPL ($(boot)/image)' 150 echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)' 151 echo ' install - Install kernel using' 152 echo ' (your) ~/bin/$(INSTALLKERNEL) or' 153 echo ' (distribution) /sbin/$(INSTALLKERNEL) or' 154 echo ' install to $$(INSTALL_PATH)' 155endef 156