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 export CC_FLAGS_MARCH := $(mflags-y)
  37
  38 aflags-y += $(mflags-y)
  39 cflags-y += $(mflags-y)
  40
  41 cflags-$(CONFIG_MARCH_Z900_TUNE)        += -mtune=z900
  42 cflags-$(CONFIG_MARCH_Z990_TUNE)        += -mtune=z990
  43 cflags-$(CONFIG_MARCH_Z9_109_TUNE)      += -mtune=z9-109
  44 cflags-$(CONFIG_MARCH_Z10_TUNE)         += -mtune=z10
  45 cflags-$(CONFIG_MARCH_Z196_TUNE)        += -mtune=z196
  46 cflags-$(CONFIG_MARCH_ZEC12_TUNE)       += -mtune=zEC12
  47 cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13
  48
  49 #KBUILD_IMAGE is necessary for make rpm
  50 KBUILD_IMAGE    :=arch/s390/boot/image
  51
  52 #
  53 # Prevent tail-call optimizations, to get clearer backtraces:
  54 #
  55 cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
  56
  57 # old style option for packed stacks
  58 ifeq ($(call cc-option-yn,-mkernel-backchain),y)
  59 cflags-$(CONFIG_PACK_STACK)  += -mkernel-backchain -D__PACK_STACK
  60 aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
  61 endif
  62
  63 # new style option for packed stacks
  64 ifeq ($(call cc-option-yn,-mpacked-stack),y)
  65 cflags-$(CONFIG_PACK_STACK)  += -mpacked-stack -D__PACK_STACK
  66 aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
  67 endif
  68
  69 ifeq ($(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-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack
  78 endif
  79
  80 ifdef CONFIG_EXPOLINE
  81   ifeq ($(call cc-option-yn,$(CC_FLAGS_MARCH) -mindirect-branch=thunk),y)
  82     CC_FLAGS_EXPOLINE := -mindirect-branch=thunk
  83     CC_FLAGS_EXPOLINE += -mfunction-return=thunk
  84     CC_FLAGS_EXPOLINE += -mindirect-branch-table
  85     export CC_FLAGS_EXPOLINE
  86     cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_EXPOLINE
  87   endif
  88 endif
  89
  90 ifdef CONFIG_FUNCTION_TRACER
  91 # make use of hotpatch feature if the compiler supports it
  92 cc_hotpatch     := -mhotpatch=0,3
  93 ifeq ($(call cc-option-yn,$(cc_hotpatch)),y)
  94 CC_FLAGS_FTRACE := $(cc_hotpatch)
  95 KBUILD_AFLAGS   += -DCC_USING_HOTPATCH
  96 KBUILD_CFLAGS   += -DCC_USING_HOTPATCH
  97 endif
  98 endif
  99
 100 KBUILD_CFLAGS   += -mbackchain -msoft-float $(cflags-y)
 101 KBUILD_CFLAGS   += -pipe -fno-strength-reduce -Wno-sign-compare
 102 KBUILD_AFLAGS   += $(aflags-y)
 103
 104 OBJCOPYFLAGS    := -O binary
 105
 106 head-y          := arch/s390/kernel/head.o
 107 head-y          += arch/s390/kernel/head64.o
 108
 109 # See arch/s390/Kbuild for content of core part of the kernel
 110 core-y          += arch/s390/
 111
 112 libs-y          += arch/s390/lib/
 113 drivers-y       += drivers/s390/
 114
 115 # must be linked after kernel
 116 drivers-$(CONFIG_OPROFILE)      += arch/s390/oprofile/
 117
 118 boot            := arch/s390/boot
 119
 120 all: image bzImage
 121
 122 install: vmlinux
 123         $(Q)$(MAKE) $(build)=$(boot) $@
 124
 125 image bzImage: vmlinux
 126         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 127
 128 zfcpdump:
 129         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 130
 131 vdso_install:
 132         $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
 133         $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
 134
 135 archclean:
 136         $(Q)$(MAKE) $(clean)=$(boot)
 137
 138 # Don't use tabs in echo arguments
 139 define archhelp
 140   echo  '* image           - Kernel image for IPL ($(boot)/image)'
 141   echo  '* bzImage         - Compressed kernel image for IPL ($(boot)/bzImage)'
 142 endef