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 17LDFLAGS := -m elf_s390 18KBUILD_CFLAGS += -m31 19KBUILD_AFLAGS += -m31 20UTS_MACHINE := s390 21STACK_SIZE := 8192 22CHECKFLAGS += -D__s390__ -msize-long 23else 24LDFLAGS := -m elf64_s390 25MODFLAGS += -fpic -D__PIC__ 26KBUILD_CFLAGS += -m64 27KBUILD_AFLAGS += -m64 28UTS_MACHINE := s390x 29STACK_SIZE := 16384 30CHECKFLAGS += -D__s390__ -D__s390x__ 31endif 32 33cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5) 34cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900) 35cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990) 36cflags-$(CONFIG_MARCH_Z9_109) += $(call cc-option,-march=z9-109) 37 38#KBUILD_IMAGE is necessary for make rpm 39KBUILD_IMAGE :=arch/s390/boot/image 40 41# 42# Prevent tail-call optimizations, to get clearer backtraces: 43# 44cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls 45 46# old style option for packed stacks 47ifeq ($(call cc-option-yn,-mkernel-backchain),y) 48cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK 49aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 50cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 51aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 52ifdef CONFIG_SMALL_STACK 53STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) ) 54endif 55endif 56 57# new style option for packed stacks 58ifeq ($(call cc-option-yn,-mpacked-stack),y) 59cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK 60aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 61cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 62aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 63ifdef CONFIG_SMALL_STACK 64STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) ) 65endif 66endif 67 68ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y) 69cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE) 70ifneq ($(call cc-option-yn,-mstack-size=8192),y) 71cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD) 72endif 73endif 74 75ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y) 76cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack 77cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE) 78endif 79 80KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) 81KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare 82KBUILD_AFLAGS += $(aflags-y) 83 84OBJCOPYFLAGS := -O binary 85LDFLAGS_vmlinux := -e start 86 87head-y := arch/s390/kernel/head.o arch/s390/kernel/init_task.o 88 89core-y += arch/s390/mm/ arch/s390/kernel/ arch/s390/crypto/ \ 90 arch/s390/appldata/ arch/s390/hypfs/ arch/s390/kvm/ 91libs-y += arch/s390/lib/ 92drivers-y += drivers/s390/ 93drivers-$(CONFIG_MATHEMU) += arch/s390/math-emu/ 94 95# must be linked after kernel 96drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/ 97 98boot := arch/s390/boot 99 100all: image 101 102install: vmlinux 103 $(Q)$(MAKE) $(build)=$(boot) $@ 104 105image: vmlinux 106 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 107 108zfcpdump: 109 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 110 111archclean: 112 $(Q)$(MAKE) $(clean)=$(boot) 113 114# Don't use tabs in echo arguments 115define archhelp 116 echo '* image - Kernel image for IPL ($(boot)/image)' 117endef 118