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 mflags-$(CONFIG_MARCH_G5) := -march=g5
39 mflags-$(CONFIG_MARCH_Z900) := -march=z900
40 mflags-$(CONFIG_MARCH_Z990) := -march=z990
41 mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109
42 mflags-$(CONFIG_MARCH_Z10) := -march=z10
43 mflags-$(CONFIG_MARCH_Z196) := -march=z196
44 mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12
45 mflags-$(CONFIG_MARCH_Z13) := -march=z13
47 aflags-y += $(mflags-y)
48 cflags-y += $(mflags-y)
50 cflags-$(CONFIG_MARCH_G5_TUNE) += -mtune=g5
51 cflags-$(CONFIG_MARCH_Z900_TUNE) += -mtune=z900
52 cflags-$(CONFIG_MARCH_Z990_TUNE) += -mtune=z990
53 cflags-$(CONFIG_MARCH_Z9_109_TUNE) += -mtune=z9-109
54 cflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10
55 cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196
56 cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12
57 cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13
59 #KBUILD_IMAGE is necessary for make rpm
60 KBUILD_IMAGE :=arch/s390/boot/image
63 # Prevent tail-call optimizations, to get clearer backtraces:
65 cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
67 # old style option for packed stacks
68 ifeq ($(call cc-option-yn,-mkernel-backchain),y)
69 cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK
70 aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
73 # new style option for packed stacks
74 ifeq ($(call cc-option-yn,-mpacked-stack),y)
75 cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK
76 aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
79 ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
80 cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
81 ifneq ($(call cc-option-yn,-mstack-size=8192),y)
82 cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
86 ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
87 cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack
90 ifdef CONFIG_FUNCTION_TRACER
91 # make use of hotpatch feature if the compiler supports it
92 cc_hotpatch := -mhotpatch=0,3
93 ifeq ($(call cc-option-yn,$(cc_hotpatch)),y)
94 CC_FLAGS_FTRACE := $(cc_hotpatch)
95 KBUILD_AFLAGS += -DCC_USING_HOTPATCH
96 KBUILD_CFLAGS += -DCC_USING_HOTPATCH
100 KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y)
101 KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
102 KBUILD_AFLAGS += $(aflags-y)
104 OBJCOPYFLAGS := -O binary
106 head-y := arch/s390/kernel/head.o
107 head-y += arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o)
109 # See arch/s390/Kbuild for content of core part of the kernel
112 libs-y += arch/s390/lib/
113 drivers-y += drivers/s390/
115 # must be linked after kernel
116 drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/
118 boot := arch/s390/boot
123 $(Q)$(MAKE) $(build)=$(boot) $@
125 image bzImage: vmlinux
126 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
129 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
132 ifeq ($(CONFIG_64BIT),y)
133 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
135 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
138 $(Q)$(MAKE) $(clean)=$(boot)
140 # Don't use tabs in echo arguments
142 echo '* image - Kernel image for IPL ($(boot)/image)'
143 echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)'