Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
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
16LD_BFD := elf64-s390
17LDFLAGS := -m elf64_s390
18KBUILD_AFLAGS_MODULE += -fPIC
19KBUILD_CFLAGS_MODULE += -fPIC
20KBUILD_CFLAGS += -m64
21KBUILD_AFLAGS += -m64
22UTS_MACHINE := s390x
23STACK_SIZE := 16384
24CHECKFLAGS += -D__s390__ -D__s390x__
25
26export LD_BFD
27
28mflags-$(CONFIG_MARCH_Z900) := -march=z900
29mflags-$(CONFIG_MARCH_Z990) := -march=z990
30mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109
31mflags-$(CONFIG_MARCH_Z10) := -march=z10
32mflags-$(CONFIG_MARCH_Z196) := -march=z196
33mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12
34mflags-$(CONFIG_MARCH_Z13) := -march=z13
35
36aflags-y += $(mflags-y)
37cflags-y += $(mflags-y)
38
39cflags-$(CONFIG_MARCH_Z900_TUNE) += -mtune=z900
40cflags-$(CONFIG_MARCH_Z990_TUNE) += -mtune=z990
41cflags-$(CONFIG_MARCH_Z9_109_TUNE) += -mtune=z9-109
42cflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10
43cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196
44cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12
45cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13
46
47#KBUILD_IMAGE is necessary for make rpm
48KBUILD_IMAGE :=arch/s390/boot/image
49
50#
51# Prevent tail-call optimizations, to get clearer backtraces:
52#
53cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
54
55# old style option for packed stacks
56ifeq ($(call cc-option-yn,-mkernel-backchain),y)
57cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK
58aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
59endif
60
61# new style option for packed stacks
62ifeq ($(call cc-option-yn,-mpacked-stack),y)
63cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK
64aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
65endif
66
67ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
68cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
69ifneq ($(call cc-option-yn,-mstack-size=8192),y)
70cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
71endif
72endif
73
74ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
75cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack
76endif
77
78ifdef CONFIG_FUNCTION_TRACER
79# make use of hotpatch feature if the compiler supports it
80cc_hotpatch := -mhotpatch=0,3
81ifeq ($(call cc-option-yn,$(cc_hotpatch)),y)
82CC_FLAGS_FTRACE := $(cc_hotpatch)
83KBUILD_AFLAGS += -DCC_USING_HOTPATCH
84KBUILD_CFLAGS += -DCC_USING_HOTPATCH
85endif
86endif
87
88KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y)
89KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
90KBUILD_AFLAGS += $(aflags-y)
91
92OBJCOPYFLAGS := -O binary
93
94head-y := arch/s390/kernel/head.o
95head-y += arch/s390/kernel/head64.o
96
97# See arch/s390/Kbuild for content of core part of the kernel
98core-y += arch/s390/
99
100libs-y += arch/s390/lib/
101drivers-y += drivers/s390/
102
103# must be linked after kernel
104drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/
105
106boot := arch/s390/boot
107
108all: image bzImage
109
110install: vmlinux
111 $(Q)$(MAKE) $(build)=$(boot) $@
112
113image bzImage: vmlinux
114 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
115
116zfcpdump:
117 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
118
119vdso_install:
120 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
121 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
122
123archclean:
124 $(Q)$(MAKE) $(clean)=$(boot)
125
126# Don't use tabs in echo arguments
127define archhelp
128 echo '* image - Kernel image for IPL ($(boot)/image)'
129 echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)'
130endef