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 LD_BFD          := elf32-s390
  18 LDFLAGS         := -m elf_s390
  19 KBUILD_CFLAGS   += -m31
  20 KBUILD_AFLAGS   += -m31
  21 UTS_MACHINE     := s390
  22 STACK_SIZE      := 8192
  23 CHECKFLAGS      += -D__s390__ -msize-long
  24 else
  25 LD_BFD          := elf64-s390
  26 LDFLAGS         := -m elf64_s390
  27 KBUILD_AFLAGS_MODULE += -fpic -D__PIC__
  28 KBUILD_CFLAGS_MODULE += -fpic -D__PIC__
  29 KBUILD_CFLAGS   += -m64
  30 KBUILD_AFLAGS   += -m64
  31 UTS_MACHINE     := s390x
  32 STACK_SIZE      := 16384
  33 CHECKFLAGS      += -D__s390__ -D__s390x__
  34 endif
  35
  36 export LD_BFD
  37
  38 cflags-$(CONFIG_MARCH_G5)   += $(call cc-option,-march=g5)
  39 cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900)
  40 cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990)
  41 cflags-$(CONFIG_MARCH_Z9_109) += $(call cc-option,-march=z9-109)
  42 cflags-$(CONFIG_MARCH_Z10) += $(call cc-option,-march=z10)
  43 cflags-$(CONFIG_MARCH_Z196) += $(call cc-option,-march=z196)
  44
  45 #KBUILD_IMAGE is necessary for make rpm
  46 KBUILD_IMAGE    :=arch/s390/boot/image
  47
  48 #
  49 # Prevent tail-call optimizations, to get clearer backtraces:
  50 #
  51 cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
  52
  53 # old style option for packed stacks
  54 ifeq ($(call cc-option-yn,-mkernel-backchain),y)
  55 cflags-$(CONFIG_PACK_STACK)  += -mkernel-backchain -D__PACK_STACK
  56 aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
  57 cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  58 aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  59 ifdef CONFIG_SMALL_STACK
  60 STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
  61 endif
  62 endif
  63
  64 # new style option for packed stacks
  65 ifeq ($(call cc-option-yn,-mpacked-stack),y)
  66 cflags-$(CONFIG_PACK_STACK)  += -mpacked-stack -D__PACK_STACK
  67 aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
  68 cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  69 aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  70 ifdef CONFIG_SMALL_STACK
  71 STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
  72 endif
  73 endif
  74
  75 ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
  76 cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
  77 ifneq ($(call cc-option-yn,-mstack-size=8192),y)
  78 cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
  79 endif
  80 endif
  81
  82 ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
  83 cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack
  84 endif
  85
  86 KBUILD_CFLAGS   += -mbackchain -msoft-float $(cflags-y)
  87 KBUILD_CFLAGS   += -pipe -fno-strength-reduce -Wno-sign-compare
  88 KBUILD_AFLAGS   += $(aflags-y)
  89
  90 OBJCOPYFLAGS    := -O binary
  91
  92 head-y          := arch/s390/kernel/head.o
  93 head-y          += arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o)
  94 head-y          += arch/s390/kernel/init_task.o
  95
  96 # See arch/s390/Kbuild for content of core part of the kernel
  97 core-y          += arch/s390/
  98
  99 libs-y          += arch/s390/lib/
 100 drivers-y       += drivers/s390/
 101
 102 # must be linked after kernel
 103 drivers-$(CONFIG_OPROFILE)      += arch/s390/oprofile/
 104
 105 boot            := arch/s390/boot
 106
 107 all: image bzImage
 108
 109 install: vmlinux
 110         $(Q)$(MAKE) $(build)=$(boot) $@
 111
 112 image bzImage: vmlinux
 113         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 114
 115 zfcpdump:
 116         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 117
 118 vdso_install:
 119 ifeq ($(CONFIG_64BIT),y)
 120         $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
 121 endif
 122         $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
 123
 124 archclean:
 125         $(Q)$(MAKE) $(clean)=$(boot)
 126
 127 # Don't use tabs in echo arguments
 128 define archhelp
 129   echo  '* image           - Kernel image for IPL ($(boot)/image)'
 130   echo  '* bzImage         - Compressed kernel image for IPL ($(boot)/bzImage)'
 131 endef