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 49#KBUILD_IMAGE is necessary for make rpm 50KBUILD_IMAGE :=arch/s390/boot/image 51 52# 53# Prevent tail-call optimizations, to get clearer backtraces: 54# 55cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls 56 57# old style option for packed stacks 58ifeq ($(call cc-option-yn,-mkernel-backchain),y) 59cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK 60aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 61endif 62 63# new style option for packed stacks 64ifeq ($(call cc-option-yn,-mpacked-stack),y) 65cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK 66aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 67endif 68 69ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y) 70cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE) 71ifneq ($(call cc-option-yn,-mstack-size=8192),y) 72cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD) 73endif 74endif 75 76ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y) 77cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack 78endif 79 80ifdef CONFIG_FUNCTION_TRACER 81# make use of hotpatch feature if the compiler supports it 82cc_hotpatch := -mhotpatch=0,3 83ifeq ($(call cc-option-yn,$(cc_hotpatch)),y) 84CC_FLAGS_FTRACE := $(cc_hotpatch) 85KBUILD_AFLAGS += -DCC_USING_HOTPATCH 86KBUILD_CFLAGS += -DCC_USING_HOTPATCH 87endif 88endif 89 90KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) 91KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare 92KBUILD_AFLAGS += $(aflags-y) 93 94OBJCOPYFLAGS := -O binary 95 96head-y := arch/s390/kernel/head.o 97head-y += arch/s390/kernel/head64.o 98 99# See arch/s390/Kbuild for content of core part of the kernel 100core-y += arch/s390/ 101 102libs-y += arch/s390/lib/ 103drivers-y += drivers/s390/ 104 105# must be linked after kernel 106drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/ 107 108boot := arch/s390/boot 109 110all: image bzImage 111 112install: vmlinux 113 $(Q)$(MAKE) $(build)=$(boot) $@ 114 115image bzImage: vmlinux 116 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 117 118zfcpdump: 119 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 120 121vdso_install: 122 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ 123 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ 124 125archclean: 126 $(Q)$(MAKE) $(clean)=$(boot) 127 128# Don't use tabs in echo arguments 129define archhelp 130 echo '* image - Kernel image for IPL ($(boot)/image)' 131 echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)' 132endef 133