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
36export CC_FLAGS_MARCH := $(mflags-y)
37
38aflags-y += $(mflags-y)
39cflags-y += $(mflags-y)
40
41cflags-$(CONFIG_MARCH_Z900_TUNE) += -mtune=z900
42cflags-$(CONFIG_MARCH_Z990_TUNE) += -mtune=z990
43cflags-$(CONFIG_MARCH_Z9_109_TUNE) += -mtune=z9-109
44cflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10
45cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196
46cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12
47cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13
48
49cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include
50
51#KBUILD_IMAGE is necessary for make rpm
52KBUILD_IMAGE :=arch/s390/boot/image
53
54#
55# Prevent tail-call optimizations, to get clearer backtraces:
56#
57cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
58
59# old style option for packed stacks
60ifeq ($(call cc-option-yn,-mkernel-backchain),y)
61cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK
62aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
63endif
64
65# new style option for packed stacks
66ifeq ($(call cc-option-yn,-mpacked-stack),y)
67cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK
68aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
69endif
70
71ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
72cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
73ifneq ($(call cc-option-yn,-mstack-size=8192),y)
74cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
75endif
76endif
77
78ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
79cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack
80endif
81
82ifdef CONFIG_FUNCTION_TRACER
83# make use of hotpatch feature if the compiler supports it
84cc_hotpatch := -mhotpatch=0,3
85ifeq ($(call cc-option-yn,$(cc_hotpatch)),y)
86CC_FLAGS_FTRACE := $(cc_hotpatch)
87KBUILD_AFLAGS += -DCC_USING_HOTPATCH
88KBUILD_CFLAGS += -DCC_USING_HOTPATCH
89endif
90endif
91
92KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y)
93KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
94KBUILD_AFLAGS += $(aflags-y)
95
96OBJCOPYFLAGS := -O binary
97
98head-y := arch/s390/kernel/head.o
99head-y += arch/s390/kernel/head64.o
100
101# See arch/s390/Kbuild for content of core part of the kernel
102core-y += arch/s390/
103
104libs-y += arch/s390/lib/
105drivers-y += drivers/s390/
106
107# must be linked after kernel
108drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/
109
110boot := arch/s390/boot
111tools := arch/s390/tools
112
113all: image bzImage
114
115install: vmlinux
116 $(Q)$(MAKE) $(build)=$(boot) $@
117
118image bzImage: vmlinux
119 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
120
121zfcpdump:
122 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
123
124vdso_install:
125 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
126 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
127
128archclean:
129 $(Q)$(MAKE) $(clean)=$(boot)
130 $(Q)$(MAKE) $(clean)=$(tools)
131
132archprepare:
133 $(Q)$(MAKE) $(build)=$(tools) include/generated/facilities.h
134
135# Don't use tabs in echo arguments
136define archhelp
137 echo '* image - Kernel image for IPL ($(boot)/image)'
138 echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)'
139 echo ' install - Install kernel using'
140 echo ' (your) ~/bin/$(INSTALLKERNEL) or'
141 echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
142 echo ' install to $$(INSTALL_PATH)'
143endef