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 -D__PIC__ 28KBUILD_CFLAGS_MODULE += -fpic -D__PIC__ 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) += $(call cc-option,-march=z196) 44 45#KBUILD_IMAGE is necessary for make rpm 46KBUILD_IMAGE :=arch/s390/boot/image 47 48# 49# Prevent tail-call optimizations, to get clearer backtraces: 50# 51cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls 52 53# old style option for packed stacks 54ifeq ($(call cc-option-yn,-mkernel-backchain),y) 55cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK 56aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 57cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 58aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 59ifdef CONFIG_SMALL_STACK 60STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) ) 61endif 62endif 63 64# new style option for packed stacks 65ifeq ($(call cc-option-yn,-mpacked-stack),y) 66cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK 67aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK 68cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 69aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK 70ifdef CONFIG_SMALL_STACK 71STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) ) 72endif 73endif 74 75ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y) 76cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE) 77ifneq ($(call cc-option-yn,-mstack-size=8192),y) 78cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD) 79endif 80endif 81 82ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y) 83cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack 84cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE) 85endif 86 87KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) 88KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare 89KBUILD_AFLAGS += $(aflags-y) 90 91OBJCOPYFLAGS := -O binary 92LDFLAGS_vmlinux := -e start 93 94head-y := arch/s390/kernel/head.o 95head-y += arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o) 96head-y += arch/s390/kernel/init_task.o 97 98# See arch/s390/Kbuild for content of core part of the kernel 99core-y += arch/s390/ 100 101libs-y += arch/s390/lib/ 102drivers-y += drivers/s390/ 103drivers-$(CONFIG_MATHEMU) += arch/s390/math-emu/ 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: 122ifeq ($(CONFIG_64BIT),y) 123 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ 124endif 125 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ 126 127archclean: 128 $(Q)$(MAKE) $(clean)=$(boot) 129 130# Don't use tabs in echo arguments 131define archhelp 132 echo '* image - Kernel image for IPL ($(boot)/image)' 133 echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)' 134endef 135