linux/arch/s390/Makefile
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   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-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
  58cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  59aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  60ifdef CONFIG_SMALL_STACK
  61STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
  62endif
  63endif
  64
  65# new style option for packed stacks
  66ifeq ($(call cc-option-yn,-mpacked-stack),y)
  67cflags-$(CONFIG_PACK_STACK)  += -mpacked-stack -D__PACK_STACK
  68aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
  69cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  70aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  71ifdef CONFIG_SMALL_STACK
  72STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
  73endif
  74endif
  75
  76ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
  77cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
  78ifneq ($(call cc-option-yn,-mstack-size=8192),y)
  79cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
  80endif
  81endif
  82
  83ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
  84cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack
  85endif
  86
  87KBUILD_CFLAGS   += -mbackchain -msoft-float $(cflags-y)
  88KBUILD_CFLAGS   += -pipe -fno-strength-reduce -Wno-sign-compare
  89KBUILD_AFLAGS   += $(aflags-y)
  90
  91OBJCOPYFLAGS    := -O binary
  92
  93head-y          := arch/s390/kernel/head.o
  94head-y          += arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o)
  95
  96# See arch/s390/Kbuild for content of core part of the kernel
  97core-y          += arch/s390/
  98
  99libs-y          += arch/s390/lib/
 100drivers-y       += drivers/s390/
 101
 102# must be linked after kernel
 103drivers-$(CONFIG_OPROFILE)      += arch/s390/oprofile/
 104
 105boot            := arch/s390/boot
 106
 107all: image bzImage
 108
 109install: vmlinux
 110        $(Q)$(MAKE) $(build)=$(boot) $@
 111
 112image bzImage: vmlinux
 113        $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 114
 115zfcpdump:
 116        $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 117
 118vdso_install:
 119ifeq ($(CONFIG_64BIT),y)
 120        $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
 121endif
 122        $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
 123
 124archclean:
 125        $(Q)$(MAKE) $(clean)=$(boot)
 126
 127# Don't use tabs in echo arguments
 128define archhelp
 129  echo  '* image           - Kernel image for IPL ($(boot)/image)'
 130  echo  '* bzImage         - Compressed kernel image for IPL ($(boot)/bzImage)'
 131endef
 132
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