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 LD_BFD          := elf64-s390
  17 LDFLAGS         := -m elf64_s390
  18 KBUILD_AFLAGS_MODULE += -fPIC
  19 KBUILD_CFLAGS_MODULE += -fPIC
  20 KBUILD_CFLAGS   += -m64
  21 KBUILD_AFLAGS   += -m64
  22 UTS_MACHINE     := s390x
  23 STACK_SIZE      := 16384
  24 CHECKFLAGS      += -D__s390__ -D__s390x__
  25
  26 export LD_BFD
  27
  28 mflags-$(CONFIG_MARCH_Z900)   := -march=z900
  29 mflags-$(CONFIG_MARCH_Z990)   := -march=z990
  30 mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109
  31 mflags-$(CONFIG_MARCH_Z10)    := -march=z10
  32 mflags-$(CONFIG_MARCH_Z196)   := -march=z196
  33 mflags-$(CONFIG_MARCH_ZEC12)  := -march=zEC12
  34 mflags-$(CONFIG_MARCH_Z13)   := -march=z13
  35
  36 aflags-y += $(mflags-y)
  37 cflags-y += $(mflags-y)
  38
  39 cflags-$(CONFIG_MARCH_Z900_TUNE)        += -mtune=z900
  40 cflags-$(CONFIG_MARCH_Z990_TUNE)        += -mtune=z990
  41 cflags-$(CONFIG_MARCH_Z9_109_TUNE)      += -mtune=z9-109
  42 cflags-$(CONFIG_MARCH_Z10_TUNE)         += -mtune=z10
  43 cflags-$(CONFIG_MARCH_Z196_TUNE)        += -mtune=z196
  44 cflags-$(CONFIG_MARCH_ZEC12_TUNE)       += -mtune=zEC12
  45 cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13
  46
  47 #KBUILD_IMAGE is necessary for make rpm
  48 KBUILD_IMAGE    :=arch/s390/boot/image
  49
  50 #
  51 # Prevent tail-call optimizations, to get clearer backtraces:
  52 #
  53 cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
  54
  55 # old style option for packed stacks
  56 ifeq ($(call cc-option-yn,-mkernel-backchain),y)
  57 cflags-$(CONFIG_PACK_STACK)  += -mkernel-backchain -D__PACK_STACK
  58 aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
  59 endif
  60
  61 # new style option for packed stacks
  62 ifeq ($(call cc-option-yn,-mpacked-stack),y)
  63 cflags-$(CONFIG_PACK_STACK)  += -mpacked-stack -D__PACK_STACK
  64 aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
  65 endif
  66
  67 ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
  68 cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
  69 ifneq ($(call cc-option-yn,-mstack-size=8192),y)
  70 cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
  71 endif
  72 endif
  73
  74 ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
  75 cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack
  76 endif
  77
  78 ifdef CONFIG_FUNCTION_TRACER
  79 # make use of hotpatch feature if the compiler supports it
  80 cc_hotpatch     := -mhotpatch=0,3
  81 ifeq ($(call cc-option-yn,$(cc_hotpatch)),y)
  82 CC_FLAGS_FTRACE := $(cc_hotpatch)
  83 KBUILD_AFLAGS   += -DCC_USING_HOTPATCH
  84 KBUILD_CFLAGS   += -DCC_USING_HOTPATCH
  85 endif
  86 endif
  87
  88 KBUILD_CFLAGS   += -mbackchain -msoft-float $(cflags-y)
  89 KBUILD_CFLAGS   += -pipe -fno-strength-reduce -Wno-sign-compare
  90 KBUILD_AFLAGS   += $(aflags-y)
  91
  92 OBJCOPYFLAGS    := -O binary
  93
  94 head-y          := arch/s390/kernel/head.o
  95 head-y          += arch/s390/kernel/head64.o
  96
  97 # See arch/s390/Kbuild for content of core part of the kernel
  98 core-y          += arch/s390/
  99
 100 libs-y          += arch/s390/lib/
 101 drivers-y       += drivers/s390/
 102
 103 # must be linked after kernel
 104 drivers-$(CONFIG_OPROFILE)      += arch/s390/oprofile/
 105
 106 boot            := arch/s390/boot
 107
 108 all: image bzImage
 109
 110 install: vmlinux
 111         $(Q)$(MAKE) $(build)=$(boot) $@
 112
 113 image bzImage: vmlinux
 114         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 115
 116 zfcpdump:
 117         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 118
 119 vdso_install:
 120         $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
 121         $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
 122
 123 archclean:
 124         $(Q)$(MAKE) $(clean)=$(boot)
 125
 126 # Don't use tabs in echo arguments
 127 define archhelp
 128   echo  '* image           - Kernel image for IPL ($(boot)/image)'
 129   echo  '* bzImage         - Compressed kernel image for IPL ($(boot)/bzImage)'
 130 endef