arch/s390/Makefile

   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
  16 ifndef CONFIG_64BIT
  17 LDFLAGS         := -m elf_s390
  18 KBUILD_CFLAGS   += -m31
  19 KBUILD_AFLAGS   += -m31
  20 UTS_MACHINE     := s390
  21 STACK_SIZE      := 8192
  22 CHECKFLAGS      += -D__s390__ -msize-long
  23 else
  24 LDFLAGS         := -m elf64_s390
  25 MODFLAGS        += -fpic -D__PIC__
  26 KBUILD_CFLAGS   += -m64
  27 KBUILD_AFLAGS   += -m64
  28 UTS_MACHINE     := s390x
  29 STACK_SIZE      := 16384
  30 CHECKFLAGS      += -D__s390__ -D__s390x__
  31 endif
  32
  33 cflags-$(CONFIG_MARCH_G5)   += $(call cc-option,-march=g5)
  34 cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900)
  35 cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990)
  36 cflags-$(CONFIG_MARCH_Z9_109) += $(call cc-option,-march=z9-109)
  37 cflags-$(CONFIG_MARCH_Z10) += $(call cc-option,-march=z10)
  38
  39 #KBUILD_IMAGE is necessary for make rpm
  40 KBUILD_IMAGE    :=arch/s390/boot/image
  41
  42 #
  43 # Prevent tail-call optimizations, to get clearer backtraces:
  44 #
  45 cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
  46
  47 # old style option for packed stacks
  48 ifeq ($(call cc-option-yn,-mkernel-backchain),y)
  49 cflags-$(CONFIG_PACK_STACK)  += -mkernel-backchain -D__PACK_STACK
  50 aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
  51 cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  52 aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  53 ifdef CONFIG_SMALL_STACK
  54 STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
  55 endif
  56 endif
  57
  58 # new style option for packed stacks
  59 ifeq ($(call cc-option-yn,-mpacked-stack),y)
  60 cflags-$(CONFIG_PACK_STACK)  += -mpacked-stack -D__PACK_STACK
  61 aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
  62 cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  63 aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  64 ifdef CONFIG_SMALL_STACK
  65 STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
  66 endif
  67 endif
  68
  69 ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
  70 cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
  71 ifneq ($(call cc-option-yn,-mstack-size=8192),y)
  72 cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
  73 endif
  74 endif
  75
  76 ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
  77 cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack
  78 cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE)
  79 endif
  80
  81 KBUILD_CFLAGS   += -mbackchain -msoft-float $(cflags-y)
  82 KBUILD_CFLAGS   += -pipe -fno-strength-reduce -Wno-sign-compare
  83 KBUILD_AFLAGS   += $(aflags-y)
  84
  85 OBJCOPYFLAGS    := -O binary
  86 LDFLAGS_vmlinux := -e start
  87
  88 head-y          := arch/s390/kernel/head.o arch/s390/kernel/init_task.o
  89
  90 core-y          += arch/s390/mm/ arch/s390/kernel/ arch/s390/crypto/ \
  91                    arch/s390/appldata/ arch/s390/hypfs/ arch/s390/kvm/
  92 libs-y          += arch/s390/lib/
  93 drivers-y       += drivers/s390/
  94 drivers-$(CONFIG_MATHEMU) += arch/s390/math-emu/
  95
  96 # must be linked after kernel
  97 drivers-$(CONFIG_OPROFILE)      += arch/s390/oprofile/
  98
  99 boot            := arch/s390/boot
 100
 101 all: image
 102
 103 install: vmlinux
 104         $(Q)$(MAKE) $(build)=$(boot) $@
 105
 106 image: vmlinux
 107         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 108
 109 zfcpdump:
 110         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 111
 112 archclean:
 113         $(Q)$(MAKE) $(clean)=$(boot)
 114
 115 # Don't use tabs in echo arguments
 116 define archhelp
 117   echo  '* image           - Kernel image for IPL ($(boot)/image)'
 118 endef