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
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
13 # Copyright (C) 1994 by Linus Torvalds
18 LDFLAGS := -m elf_s390
23 CHECKFLAGS += -D__s390__ -msize-long
26 LDFLAGS := -m elf64_s390
27 KBUILD_AFLAGS_MODULE += -fPIC
28 KBUILD_CFLAGS_MODULE += -fPIC
33 CHECKFLAGS += -D__s390__ -D__s390x__
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) += $(call cc-option,-march=z196)
44 cflags-$(CONFIG_MARCH_ZEC12) += $(call cc-option,-march=zEC12)
46 #KBUILD_IMAGE is necessary for make rpm
47 KBUILD_IMAGE :=arch/s390/boot/image
50 # Prevent tail-call optimizations, to get clearer backtraces:
52 cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
54 # old style option for packed stacks
55 ifeq ($(call cc-option-yn,-mkernel-backchain),y)
56 cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK
57 aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
60 # new style option for packed stacks
61 ifeq ($(call cc-option-yn,-mpacked-stack),y)
62 cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK
63 aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
66 ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
67 cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
68 ifneq ($(call cc-option-yn,-mstack-size=8192),y)
69 cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
73 ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
74 cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack
77 KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y)
78 KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
79 KBUILD_AFLAGS += $(aflags-y)
81 OBJCOPYFLAGS := -O binary
83 head-y := arch/s390/kernel/head.o
84 head-y += arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o)
86 # See arch/s390/Kbuild for content of core part of the kernel
89 libs-y += arch/s390/lib/
90 drivers-y += drivers/s390/
92 # must be linked after kernel
93 drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/
95 boot := arch/s390/boot
100 $(Q)$(MAKE) $(build)=$(boot) $@
102 image bzImage: vmlinux
103 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
106 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
109 ifeq ($(CONFIG_64BIT),y)
110 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
112 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
115 $(Q)$(MAKE) $(clean)=$(boot)
117 # Don't use tabs in echo arguments
119 echo '* image - Kernel image for IPL ($(boot)/image)'
120 echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)'