Root/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
16ifndef CONFIG_64BIT
17LD_BFD := elf32-s390
18LDFLAGS := -m elf_s390
19KBUILD_CFLAGS += -m31
20KBUILD_AFLAGS += -m31
21UTS_MACHINE := s390
22STACK_SIZE := 8192
23CHECKFLAGS += -D__s390__ -msize-long
24else
25LD_BFD := elf64-s390
26LDFLAGS := -m elf64_s390
27KBUILD_AFLAGS_MODULE += -fpic -D__PIC__
28KBUILD_CFLAGS_MODULE += -fpic -D__PIC__
29KBUILD_CFLAGS += -m64
30KBUILD_AFLAGS += -m64
31UTS_MACHINE := s390x
32STACK_SIZE := 16384
33CHECKFLAGS += -D__s390__ -D__s390x__
34endif
35
36export LD_BFD
37
38cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5)
39cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900)
40cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990)
41cflags-$(CONFIG_MARCH_Z9_109) += $(call cc-option,-march=z9-109)
42cflags-$(CONFIG_MARCH_Z10) += $(call cc-option,-march=z10)
43
44#KBUILD_IMAGE is necessary for make rpm
45KBUILD_IMAGE :=arch/s390/boot/image
46
47#
48# Prevent tail-call optimizations, to get clearer backtraces:
49#
50cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
51
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)
76ifneq ($(call cc-option-yn,-mstack-size=8192),y)
77cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
78endif
79endif
80
81ifeq ($(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
86KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y)
87KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
88KBUILD_AFLAGS += $(aflags-y)
89
90OBJCOPYFLAGS := -O binary
91LDFLAGS_vmlinux := -e start
92
93head-y := arch/s390/kernel/head.o
94head-y += arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o)
95head-y += arch/s390/kernel/init_task.o
96
97core-y += arch/s390/mm/ arch/s390/kernel/ arch/s390/crypto/ \
98           arch/s390/appldata/ arch/s390/hypfs/ arch/s390/kvm/
99
100libs-y += arch/s390/lib/
101drivers-y += drivers/s390/
102drivers-$(CONFIG_MATHEMU) += arch/s390/math-emu/
103
104# must be linked after kernel
105drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/
106
107boot := arch/s390/boot
108
109all: image bzImage
110
111install: vmlinux
112    $(Q)$(MAKE) $(build)=$(boot) $@
113
114image bzImage: vmlinux
115    $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
116
117zfcpdump:
118    $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
119
120vdso_install:
121ifeq ($(CONFIG_64BIT),y)
122    $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
123endif
124    $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
125
126archclean:
127    $(Q)$(MAKE) $(clean)=$(boot)
128
129# Don't use tabs in echo arguments
130define archhelp
131  echo '* image - Kernel image for IPL ($(boot)/image)'
132  echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)'
133endef
134

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