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 38cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5) 39cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900) 40cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990) 41cflags-$(CONFIG_MARCH_Z9_109) += $(call cc-option,-march=z9-109) 42cflags-$(CONFIG_MARCH_Z10) += $(call cc-option,-march=z10) 43cflags-$(CONFIG_MARCH_Z196) += $(call cc-option,-march=z196) 44cflags-$(CONFIG_MARCH_ZEC12) += $(call cc-option,-march=zEC12) 45 46#KBUILD_IMAGE is necessary for make rpm 47KBUILD_IMAGE :=arch/s390/boot/image 48 49# 50# Prevent tail-call optimizations, to get clearer backtraces: 51# 52cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls 53 54# old style option for packed stacks 55ifeq ($(call cc-option-yn,-mkernel-backchain),y) 56cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK 57aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 58endif 59 60# new style option for packed stacks 61ifeq ($(call cc-option-yn,-mpacked-stack),y) 62cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK 63aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 64endif 65 66ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y) 67cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE) 68ifneq ($(call cc-option-yn,-mstack-size=8192),y) 69cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD) 70endif 71endif 72 73ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y) 74cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack 75endif 76 77KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) 78KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare 79KBUILD_AFLAGS += $(aflags-y) 80 81OBJCOPYFLAGS := -O binary 82 83head-y := arch/s390/kernel/head.o 84head-y += arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o) 85 86# See arch/s390/Kbuild for content of core part of the kernel 87core-y += arch/s390/ 88 89libs-y += arch/s390/lib/ 90drivers-y += drivers/s390/ 91 92# must be linked after kernel 93drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/ 94 95boot := arch/s390/boot 96 97all: image bzImage 98 99install: vmlinux 100 $(Q)$(MAKE) $(build)=$(boot) $@ 101 102image bzImage: vmlinux 103 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 104 105zfcpdump: 106 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 107 108vdso_install: 109ifeq ($(CONFIG_64BIT),y) 110 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ 111endif 112 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ 113 114archclean: 115 $(Q)$(MAKE) $(clean)=$(boot) 116 117# Don't use tabs in echo arguments 118define archhelp 119 echo '* image - Kernel image for IPL ($(boot)/image)' 120 echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)' 121endef 122