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 27MODFLAGS += -fpic -D__PIC__ 28KBUILD_CFLAGS += -m64 29KBUILD_AFLAGS += -m64 30UTS_MACHINE := s390x 31STACK_SIZE := 16384 32CHECKFLAGS += -D__s390__ -D__s390x__ 33endif 34 35export LD_BFD 36 37cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5) 38cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900) 39cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990) 40cflags-$(CONFIG_MARCH_Z9_109) += $(call cc-option,-march=z9-109) 41cflags-$(CONFIG_MARCH_Z10) += $(call cc-option,-march=z10) 42 43#KBUILD_IMAGE is necessary for make rpm 44KBUILD_IMAGE :=arch/s390/boot/image 45 46# 47# Prevent tail-call optimizations, to get clearer backtraces: 48# 49cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls 50 51# old style option for packed stacks 52ifeq ($(call cc-option-yn,-mkernel-backchain),y) 53cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK 54aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 55cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 56aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 57ifdef CONFIG_SMALL_STACK 58STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) ) 59endif 60endif 61 62# new style option for packed stacks 63ifeq ($(call cc-option-yn,-mpacked-stack),y) 64cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK 65aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 66cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 67aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 68ifdef CONFIG_SMALL_STACK 69STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) ) 70endif 71endif 72 73ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y) 74cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE) 75ifneq ($(call cc-option-yn,-mstack-size=8192),y) 76cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD) 77endif 78endif 79 80ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y) 81cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack 82cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE) 83endif 84 85KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) 86KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare 87KBUILD_AFLAGS += $(aflags-y) 88 89OBJCOPYFLAGS := -O binary 90LDFLAGS_vmlinux := -e start 91 92head-y := arch/s390/kernel/head.o 93head-y += arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o) 94head-y += arch/s390/kernel/init_task.o 95 96core-y += arch/s390/mm/ arch/s390/kernel/ arch/s390/crypto/ \ 97 arch/s390/appldata/ arch/s390/hypfs/ arch/s390/kvm/ 98 99libs-y += arch/s390/lib/ 100drivers-y += drivers/s390/ 101drivers-$(CONFIG_MATHEMU) += arch/s390/math-emu/ 102 103# must be linked after kernel 104drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/ 105 106boot := arch/s390/boot 107 108all: image bzImage 109 110install: vmlinux 111 $(Q)$(MAKE) $(build)=$(boot) $@ 112 113image bzImage: vmlinux 114 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 115 116zfcpdump: 117 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 118 119archclean: 120 $(Q)$(MAKE) $(clean)=$(boot) 121 122# Don't use tabs in echo arguments 123define archhelp 124 echo '* image - Kernel image for IPL ($(boot)/image)' 125 echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)' 126endef 127