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1da177e4
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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
347a8dc3 16ifndef CONFIG_64BIT
1844c9bc 17LD_BFD := elf32-s390
1da177e4 18LDFLAGS := -m elf_s390
a0f97e06 19KBUILD_CFLAGS += -m31
222d394d 20KBUILD_AFLAGS += -m31
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21UTS_MACHINE := s390
22STACK_SIZE := 8192
22bb3e9e 23CHECKFLAGS += -D__s390__ -msize-long
347a8dc3 24else
1844c9bc 25LD_BFD := elf64-s390
1da177e4 26LDFLAGS := -m elf64_s390
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27KBUILD_AFLAGS_MODULE += -fpic -D__PIC__
28KBUILD_CFLAGS_MODULE += -fpic -D__PIC__
a0f97e06 29KBUILD_CFLAGS += -m64
222d394d 30KBUILD_AFLAGS += -m64
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31UTS_MACHINE := s390x
32STACK_SIZE := 16384
d310a35a 33CHECKFLAGS += -D__s390__ -D__s390x__
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34endif
35
1844c9bc
MS
36export LD_BFD
37
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38cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5)
39cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900)
40cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990)
0efa4703 41cflags-$(CONFIG_MARCH_Z9_109) += $(call cc-option,-march=z9-109)
e37f50e1 42cflags-$(CONFIG_MARCH_Z10) += $(call cc-option,-march=z10)
1da177e4 43
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44#KBUILD_IMAGE is necessary for make rpm
45KBUILD_IMAGE :=arch/s390/boot/image
46
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47#
48# Prevent tail-call optimizations, to get clearer backtraces:
49#
50cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
51
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52# old style option for packed stacks
53ifeq ($(call cc-option-yn,-mkernel-backchain),y)
54cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK
55aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
56cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
57aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
58ifdef CONFIG_SMALL_STACK
59STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
60endif
61endif
62
63# new style option for packed stacks
64ifeq ($(call cc-option-yn,-mpacked-stack),y)
65cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK
66aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
67cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
68aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
69ifdef CONFIG_SMALL_STACK
70STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
71endif
72endif
73
74ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
75cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
be796285 76ifneq ($(call cc-option-yn,-mstack-size=8192),y)
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77cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
78endif
be796285 79endif
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80
81ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
82cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack
83cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE)
84endif
85
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86KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y)
87KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
222d394d 88KBUILD_AFLAGS += $(aflags-y)
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89
90OBJCOPYFLAGS := -O binary
91LDFLAGS_vmlinux := -e start
92
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93head-y := arch/s390/kernel/head.o
94head-y += arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o)
95head-y += arch/s390/kernel/init_task.o
1da177e4 96
4562c9ff 97core-y += arch/s390/mm/ arch/s390/kernel/ arch/s390/crypto/ \
c48ff644 98 arch/s390/appldata/ arch/s390/hypfs/ arch/s390/kvm/
155af2f9 99
4562c9ff 100libs-y += arch/s390/lib/
1da177e4 101drivers-y += drivers/s390/
4562c9ff 102drivers-$(CONFIG_MATHEMU) += arch/s390/math-emu/
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103
104# must be linked after kernel
105drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/
106
4562c9ff 107boot := arch/s390/boot
1da177e4 108
1844c9bc 109all: image bzImage
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110
111install: vmlinux
112 $(Q)$(MAKE) $(build)=$(boot) $@
113
1844c9bc 114image bzImage: vmlinux
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115 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
116
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117zfcpdump:
118 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
119
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120vdso_install:
121ifeq ($(CONFIG_64BIT),y)
122 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
123endif
124 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
125
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126archclean:
127 $(Q)$(MAKE) $(clean)=$(boot)
128
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129# Don't use tabs in echo arguments
130define archhelp
131 echo '* image - Kernel image for IPL ($(boot)/image)'
1844c9bc 132 echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)'
1da177e4 133endef