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 35 36export CC_FLAGS_MARCH := $(mflags-y) 37 38aflags-y += $(mflags-y) 39cflags-y += $(mflags-y) 40 41cflags-$(CONFIG_MARCH_Z900_TUNE) += -mtune=z900 42cflags-$(CONFIG_MARCH_Z990_TUNE) += -mtune=z990 43cflags-$(CONFIG_MARCH_Z9_109_TUNE) += -mtune=z9-109 44cflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10 45cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196 46cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12 47cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13 48 49cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include 50 51#KBUILD_IMAGE is necessary for make rpm 52KBUILD_IMAGE :=arch/s390/boot/image 53 54# 55# Prevent tail-call optimizations, to get clearer backtraces: 56# 57cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls 58 59# old style option for packed stacks 60ifeq ($(call cc-option-yn,-mkernel-backchain),y) 61cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK 62aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 63endif 64 65# new style option for packed stacks 66ifeq ($(call cc-option-yn,-mpacked-stack),y) 67cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK 68aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 69endif 70 71ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y) 72cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE) 73ifneq ($(call cc-option-yn,-mstack-size=8192),y) 74cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD) 75endif 76endif 77 78ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y) 79cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack 80endif 81 82ifdef CONFIG_EXPOLINE 83 ifeq ($(call cc-option-yn,$(CC_FLAGS_MARCH) -mindirect-branch=thunk),y) 84 CC_FLAGS_EXPOLINE := -mindirect-branch=thunk 85 CC_FLAGS_EXPOLINE += -mfunction-return=thunk 86 CC_FLAGS_EXPOLINE += -mindirect-branch-table 87 export CC_FLAGS_EXPOLINE 88 cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_EXPOLINE 89 endif 90endif 91 92ifdef CONFIG_FUNCTION_TRACER 93# make use of hotpatch feature if the compiler supports it 94cc_hotpatch := -mhotpatch=0,3 95ifeq ($(call cc-option-yn,$(cc_hotpatch)),y) 96CC_FLAGS_FTRACE := $(cc_hotpatch) 97KBUILD_AFLAGS += -DCC_USING_HOTPATCH 98KBUILD_CFLAGS += -DCC_USING_HOTPATCH 99endif 100endif 101 102KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) 103KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare 104KBUILD_AFLAGS += $(aflags-y) 105 106OBJCOPYFLAGS := -O binary 107 108head-y := arch/s390/kernel/head.o 109head-y += arch/s390/kernel/head64.o 110 111# See arch/s390/Kbuild for content of core part of the kernel 112core-y += arch/s390/ 113 114libs-y += arch/s390/lib/ 115drivers-y += drivers/s390/ 116 117# must be linked after kernel 118drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/ 119 120boot := arch/s390/boot 121tools := arch/s390/tools 122 123all: image bzImage 124 125install: vmlinux 126 $(Q)$(MAKE) $(build)=$(boot) $@ 127 128image bzImage: vmlinux 129 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 130 131zfcpdump: 132 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 133 134vdso_install: 135 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ 136 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ 137 138archclean: 139 $(Q)$(MAKE) $(clean)=$(boot) 140 $(Q)$(MAKE) $(clean)=$(tools) 141 142archprepare: 143 $(Q)$(MAKE) $(build)=$(tools) include/generated/facilities.h 144 145# Don't use tabs in echo arguments 146define archhelp 147 echo '* image - Kernel image for IPL ($(boot)/image)' 148 echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)' 149 echo ' install - Install kernel using' 150 echo ' (your) ~/bin/$(INSTALLKERNEL) or' 151 echo ' (distribution) /sbin/$(INSTALLKERNEL) or' 152 echo ' install to $$(INSTALL_PATH)' 153endef 154