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