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) += $(call cc-option,-march=z990)
  36
  37 # old style option for packed stacks
  38 ifeq ($(call cc-option-yn,-mkernel-backchain),y)
  39 cflags-$(CONFIG_PACK_STACK)  += -mkernel-backchain -D__PACK_STACK
  40 aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
  41 cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  42 aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  43 ifdef CONFIG_SMALL_STACK
  44 STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
  45 endif
  46 endif
  47
  48 # new style option for packed stacks
  49 ifeq ($(call cc-option-yn,-mpacked-stack),y)
  50 cflags-$(CONFIG_PACK_STACK)  += -mpacked-stack -D__PACK_STACK
  51 aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
  52 cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  53 aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  54 ifdef CONFIG_SMALL_STACK
  55 STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
  56 endif
  57 endif
  58
  59 ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
  60 cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
  61 cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
  62 endif
  63
  64 ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
  65 cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack
  66 cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE)
  67 endif
  68
  69 CFLAGS          += -mbackchain -msoft-float $(cflags-y)
  70 CFLAGS          += $(call cc-option,-finline-limit=10000)
  71 CFLAGS          += -pipe -fno-strength-reduce -Wno-sign-compare
  72 AFLAGS          += $(aflags-y)
  73
  74 OBJCOPYFLAGS    := -O binary
  75 LDFLAGS_vmlinux := -e start
  76
  77 head-y          := arch/$(ARCH)/kernel/head.o arch/$(ARCH)/kernel/init_task.o
  78
  79 core-y          += arch/$(ARCH)/mm/ arch/$(ARCH)/kernel/ arch/$(ARCH)/crypto/ \
  80                    arch/$(ARCH)/appldata/
  81 libs-y          += arch/$(ARCH)/lib/
  82 drivers-y       += drivers/s390/
  83 drivers-$(CONFIG_MATHEMU) += arch/$(ARCH)/math-emu/
  84
  85 # must be linked after kernel
  86 drivers-$(CONFIG_OPROFILE)      += arch/s390/oprofile/
  87
  88 boot            := arch/$(ARCH)/boot
  89
  90 all: image
  91
  92 install: vmlinux
  93         $(Q)$(MAKE) $(build)=$(boot) $@
  94
  95 image: vmlinux
  96         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
  97
  98 archclean:
  99         $(Q)$(MAKE) $(clean)=$(boot)
 100
 101 # Don't use tabs in echo arguments
 102 define archhelp
 103   echo  '* image           - Kernel image for IPL ($(boot)/image)'
 104 endef