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   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 ifdef CONFIG_ARCH_S390_31
  17 LDFLAGS         := -m elf_s390
  18 CFLAGS          += -m31
  19 AFLAGS          += -m31
  20 UTS_MACHINE     := s390
  21 STACK_SIZE      := 8192
  22 CHECKFLAGS      += -D__s390__
  23 endif
  24
  25 ifdef CONFIG_ARCH_S390X
  26 LDFLAGS         := -m elf64_s390
  27 MODFLAGS        += -fpic -D__PIC__
  28 CFLAGS          += -m64
  29 AFLAGS          += -m64
  30 UTS_MACHINE     := s390x
  31 STACK_SIZE      := 16384
  32 CHECKFLAGS      += -D__s390__ -D__s390x__
  33 endif
  34
  35 cflags-$(CONFIG_MARCH_G5)   += $(call cc-option,-march=g5)
  36 cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900)
  37 cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990)
  38
  39 # old style option for packed stacks
  40 ifeq ($(call cc-option-yn,-mkernel-backchain),y)
  41 cflags-$(CONFIG_PACK_STACK)  += -mkernel-backchain -D__PACK_STACK
  42 aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
  43 cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  44 aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  45 ifdef CONFIG_SMALL_STACK
  46 STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
  47 endif
  48 endif
  49
  50 # new style option for packed stacks
  51 ifeq ($(call cc-option-yn,-mpacked-stack),y)
  52 cflags-$(CONFIG_PACK_STACK)  += -mpacked-stack -D__PACK_STACK
  53 aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
  54 cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  55 aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
  56 ifdef CONFIG_SMALL_STACK
  57 STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
  58 endif
  59 endif
  60
  61 ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
  62 cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
  63 cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
  64 endif
  65
  66 ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
  67 cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack
  68 cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE)
  69 endif
  70
  71 CFLAGS          += -mbackchain -msoft-float $(cflags-y)
  72 CFLAGS          += $(call cc-option,-finline-limit=10000)
  73 CFLAGS          += -pipe -fno-strength-reduce -Wno-sign-compare
  74 AFLAGS          += $(aflags-y)
  75
  76 OBJCOPYFLAGS    := -O binary
  77 LDFLAGS_vmlinux := -e start
  78
  79 head-$(CONFIG_ARCH_S390_31)     += arch/$(ARCH)/kernel/head.o
  80 head-$(CONFIG_ARCH_S390X)       += arch/$(ARCH)/kernel/head64.o
  81 head-y                          += arch/$(ARCH)/kernel/init_task.o
  82
  83 core-y          += arch/$(ARCH)/mm/ arch/$(ARCH)/kernel/ arch/$(ARCH)/crypto/ \
  84                    arch/$(ARCH)/appldata/
  85 libs-y          += arch/$(ARCH)/lib/
  86 drivers-y       += drivers/s390/
  87 drivers-$(CONFIG_MATHEMU) += arch/$(ARCH)/math-emu/
  88
  89 # must be linked after kernel
  90 drivers-$(CONFIG_OPROFILE)      += arch/s390/oprofile/
  91
  92 boot            := arch/$(ARCH)/boot
  93
  94 all: image
  95
  96 install: vmlinux
  97         $(Q)$(MAKE) $(build)=$(boot) $@
  98
  99 image: vmlinux
 100         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 101
 102 archclean:
 103         $(Q)$(MAKE) $(clean)=$(boot)
 104
 105 prepare: include/asm-$(ARCH)/offsets.h
 106
 107 arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
 108                                    include/config/MARKER
 109
 110 include/asm-$(ARCH)/offsets.h: arch/$(ARCH)/kernel/asm-offsets.s
 111         $(call filechk,gen-asm-offsets)
 112
 113 CLEAN_FILES += include/asm-$(ARCH)/offsets.h
 114
 115 # Don't use tabs in echo arguments
 116 define archhelp
 117   echo  '* image           - Kernel image for IPL ($(boot)/image)'
 118 endef