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-$(CONFIG_MARCH_Z13)    := -march=z13
  35 mflags-$(CONFIG_MARCH_Z14)    := -march=z14
  36
  37 export CC_FLAGS_MARCH := $(mflags-y)
  38
  39 aflags-y += $(mflags-y)
  40 cflags-y += $(mflags-y)
  41
  42 cflags-$(CONFIG_MARCH_Z900_TUNE)        += -mtune=z900
  43 cflags-$(CONFIG_MARCH_Z990_TUNE)        += -mtune=z990
  44 cflags-$(CONFIG_MARCH_Z9_109_TUNE)      += -mtune=z9-109
  45 cflags-$(CONFIG_MARCH_Z10_TUNE)         += -mtune=z10
  46 cflags-$(CONFIG_MARCH_Z196_TUNE)        += -mtune=z196
  47 cflags-$(CONFIG_MARCH_ZEC12_TUNE)       += -mtune=zEC12
  48 cflags-$(CONFIG_MARCH_Z13_TUNE)         += -mtune=z13
  49 cflags-$(CONFIG_MARCH_Z14_TUNE)         += -mtune=z14
  50
  51 cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include
  52
  53 #KBUILD_IMAGE is necessary for make rpm
  54 KBUILD_IMAGE    :=arch/s390/boot/image
  55
  56 #
  57 # Prevent tail-call optimizations, to get clearer backtraces:
  58 #
  59 cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
  60
  61 # old style option for packed stacks
  62 ifeq ($(call cc-option-yn,-mkernel-backchain),y)
  63 cflags-$(CONFIG_PACK_STACK)  += -mkernel-backchain -D__PACK_STACK
  64 aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
  65 endif
  66
  67 # new style option for packed stacks
  68 ifeq ($(call cc-option-yn,-mpacked-stack),y)
  69 cflags-$(CONFIG_PACK_STACK)  += -mpacked-stack -D__PACK_STACK
  70 aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
  71 endif
  72
  73 ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
  74 cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
  75 ifneq ($(call cc-option-yn,-mstack-size=8192),y)
  76 cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
  77 endif
  78 endif
  79
  80 ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
  81 cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack
  82 endif
  83
  84 ifdef CONFIG_EXPOLINE
  85   ifeq ($(call cc-option-yn,$(CC_FLAGS_MARCH) -mindirect-branch=thunk),y)
  86     CC_FLAGS_EXPOLINE := -mindirect-branch=thunk
  87     CC_FLAGS_EXPOLINE += -mfunction-return=thunk
  88     CC_FLAGS_EXPOLINE += -mindirect-branch-table
  89     export CC_FLAGS_EXPOLINE
  90     cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_EXPOLINE
  91   endif
  92 endif
  93
  94 ifdef CONFIG_FUNCTION_TRACER
  95 # make use of hotpatch feature if the compiler supports it
  96 cc_hotpatch     := -mhotpatch=0,3
  97 ifeq ($(call cc-option-yn,$(cc_hotpatch)),y)
  98 CC_FLAGS_FTRACE := $(cc_hotpatch)
  99 KBUILD_AFLAGS   += -DCC_USING_HOTPATCH
 100 KBUILD_CFLAGS   += -DCC_USING_HOTPATCH
 101 endif
 102 endif
 103
 104 KBUILD_CFLAGS   += -mbackchain -msoft-float $(cflags-y)
 105 KBUILD_CFLAGS   += -pipe -fno-strength-reduce -Wno-sign-compare
 106 KBUILD_AFLAGS   += $(aflags-y)
 107
 108 OBJCOPYFLAGS    := -O binary
 109
 110 head-y          := arch/s390/kernel/head.o
 111 head-y          += arch/s390/kernel/head64.o
 112
 113 # See arch/s390/Kbuild for content of core part of the kernel
 114 core-y          += arch/s390/
 115
 116 libs-y          += arch/s390/lib/
 117 drivers-y       += drivers/s390/
 118
 119 # must be linked after kernel
 120 drivers-$(CONFIG_OPROFILE)      += arch/s390/oprofile/
 121
 122 boot            := arch/s390/boot
 123 tools           := arch/s390/tools
 124
 125 all: image bzImage
 126
 127 install: vmlinux
 128         $(Q)$(MAKE) $(build)=$(boot) $@
 129
 130 image bzImage: vmlinux
 131         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 132
 133 zfcpdump:
 134         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 135
 136 vdso_install:
 137         $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
 138         $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
 139
 140 archclean:
 141         $(Q)$(MAKE) $(clean)=$(boot)
 142         $(Q)$(MAKE) $(clean)=$(tools)
 143
 144 archprepare:
 145         $(Q)$(MAKE) $(build)=$(tools) include/generated/facilities.h
 146
 147 # Don't use tabs in echo arguments
 148 define archhelp
 149   echo  '* image           - Kernel image for IPL ($(boot)/image)'
 150   echo  '* bzImage         - Compressed kernel image for IPL ($(boot)/bzImage)'
 151   echo  '  install         - Install kernel using'
 152   echo  '                    (your) ~/bin/$(INSTALLKERNEL) or'
 153   echo  '                    (distribution) /sbin/$(INSTALLKERNEL) or'
 154   echo  '                    install to $$(INSTALL_PATH)'
 155 endef