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) += $(call cc-option,-march=z9-109) 37cflags-$(CONFIG_MARCH_Z10) += $(call cc-option,-march=z10) 38 39#KBUILD_IMAGE is necessary for make rpm 40KBUILD_IMAGE :=arch/s390/boot/image 41 42# 43# Prevent tail-call optimizations, to get clearer backtraces: 44# 45cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls 46 47# old style option for packed stacks 48ifeq ($(call cc-option-yn,-mkernel-backchain),y) 49cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK 50aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 51cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 52aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 53ifdef CONFIG_SMALL_STACK 54STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) ) 55endif 56endif 57 58# new style option for packed stacks 59ifeq ($(call cc-option-yn,-mpacked-stack),y) 60cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK 61aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 62cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 63aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 64ifdef CONFIG_SMALL_STACK 65STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) ) 66endif 67endif 68 69ifeq ($(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-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack 78cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE) 79endif 80 81KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) 82KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare 83KBUILD_AFLAGS += $(aflags-y) 84 85OBJCOPYFLAGS := -O binary 86LDFLAGS_vmlinux := -e start 87 88head-y := arch/s390/kernel/head.o arch/s390/kernel/init_task.o 89 90core-y += arch/s390/mm/ arch/s390/kernel/ arch/s390/crypto/ \ 91 arch/s390/appldata/ arch/s390/hypfs/ arch/s390/kvm/ 92 93libs-y += arch/s390/lib/ 94drivers-y += drivers/s390/ 95drivers-$(CONFIG_MATHEMU) += arch/s390/math-emu/ 96 97# must be linked after kernel 98drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/ 99 100boot := arch/s390/boot 101 102all: image 103 104install: vmlinux 105 $(Q)$(MAKE) $(build)=$(boot) $@ 106 107image: vmlinux 108 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 109 110zfcpdump: 111 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 112 113archclean: 114 $(Q)$(MAKE) $(clean)=$(boot) 115 116# Don't use tabs in echo arguments 117define archhelp 118 echo '* image - Kernel image for IPL ($(boot)/image)' 119endef 120