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 16ifndef CONFIG_64BIT 17LD_BFD := elf32-s390 18LDFLAGS := -m elf_s390 19KBUILD_CFLAGS += -m31 20KBUILD_AFLAGS += -m31 21UTS_MACHINE := s390 22STACK_SIZE := 8192 23CHECKFLAGS += -D__s390__ -msize-long 24else 25LD_BFD := elf64-s390 26LDFLAGS := -m elf64_s390 27KBUILD_AFLAGS_MODULE += -fPIC 28KBUILD_CFLAGS_MODULE += -fPIC 29KBUILD_CFLAGS += -m64 30KBUILD_AFLAGS += -m64 31UTS_MACHINE := s390x 32STACK_SIZE := 16384 33CHECKFLAGS += -D__s390__ -D__s390x__ 34endif 35 36export LD_BFD 37 38mflags-$(CONFIG_MARCH_G5) := -march=g5 39mflags-$(CONFIG_MARCH_Z900) := -march=z900 40mflags-$(CONFIG_MARCH_Z990) := -march=z990 41mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109 42mflags-$(CONFIG_MARCH_Z10) := -march=z10 43mflags-$(CONFIG_MARCH_Z196) := -march=z196 44mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12 45mflags-$(CONFIG_MARCH_Z13) := -march=z13 46 47aflags-y += $(mflags-y) 48cflags-y += $(mflags-y) 49 50cflags-$(CONFIG_MARCH_G5_TUNE) += -mtune=g5 51cflags-$(CONFIG_MARCH_Z900_TUNE) += -mtune=z900 52cflags-$(CONFIG_MARCH_Z990_TUNE) += -mtune=z990 53cflags-$(CONFIG_MARCH_Z9_109_TUNE) += -mtune=z9-109 54cflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10 55cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196 56cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12 57cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13 58 59#KBUILD_IMAGE is necessary for make rpm 60KBUILD_IMAGE :=arch/s390/boot/image 61 62# 63# Prevent tail-call optimizations, to get clearer backtraces: 64# 65cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls 66 67# old style option for packed stacks 68ifeq ($(call cc-option-yn,-mkernel-backchain),y) 69cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK 70aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 71endif 72 73# new style option for packed stacks 74ifeq ($(call cc-option-yn,-mpacked-stack),y) 75cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK 76aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 77endif 78 79ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y) 80cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE) 81ifneq ($(call cc-option-yn,-mstack-size=8192),y) 82cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD) 83endif 84endif 85 86ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y) 87cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack 88endif 89 90ifdef CONFIG_FUNCTION_TRACER 91# make use of hotpatch feature if the compiler supports it 92cc_hotpatch := -mhotpatch=0,3 93ifeq ($(call cc-option-yn,$(cc_hotpatch)),y) 94CC_FLAGS_FTRACE := $(cc_hotpatch) 95KBUILD_AFLAGS += -DCC_USING_HOTPATCH 96KBUILD_CFLAGS += -DCC_USING_HOTPATCH 97endif 98endif 99 100KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) 101KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare 102KBUILD_AFLAGS += $(aflags-y) 103 104OBJCOPYFLAGS := -O binary 105 106head-y := arch/s390/kernel/head.o 107head-y += arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o) 108 109# See arch/s390/Kbuild for content of core part of the kernel 110core-y += arch/s390/ 111 112libs-y += arch/s390/lib/ 113drivers-y += drivers/s390/ 114 115# must be linked after kernel 116drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/ 117 118boot := arch/s390/boot 119 120all: image bzImage 121 122install: vmlinux 123 $(Q)$(MAKE) $(build)=$(boot) $@ 124 125image bzImage: vmlinux 126 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 127 128zfcpdump: 129 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 130 131vdso_install: 132ifeq ($(CONFIG_64BIT),y) 133 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ 134endif 135 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ 136 137archclean: 138 $(Q)$(MAKE) $(clean)=$(boot) 139 140# Don't use tabs in echo arguments 141define archhelp 142 echo '* image - Kernel image for IPL ($(boot)/image)' 143 echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)' 144endef 145