tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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
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) += $(call cc-option,-march=z10)
43cflags-$(CONFIG_MARCH_Z196) += $(call cc-option,-march=z196)
44
45#KBUILD_IMAGE is necessary for make rpm
46KBUILD_IMAGE :=arch/s390/boot/image
47
48#
49# Prevent tail-call optimizations, to get clearer backtraces:
50#
51cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
52
53# old style option for packed stacks
54ifeq ($(call cc-option-yn,-mkernel-backchain),y)
55cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK
56aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
57cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
58aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
59ifdef CONFIG_SMALL_STACK
60STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
61endif
62endif
63
64# new style option for packed stacks
65ifeq ($(call cc-option-yn,-mpacked-stack),y)
66cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK
67aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
68cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
69aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
70ifdef CONFIG_SMALL_STACK
71STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
72endif
73endif
74
75ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
76cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
77ifneq ($(call cc-option-yn,-mstack-size=8192),y)
78cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
79endif
80endif
81
82ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
83cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack
84endif
85
86KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y)
87KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
88KBUILD_AFLAGS += $(aflags-y)
89
90OBJCOPYFLAGS := -O binary
91
92head-y := arch/s390/kernel/head.o
93head-y += arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o)
94
95# See arch/s390/Kbuild for content of core part of the kernel
96core-y += arch/s390/
97
98libs-y += arch/s390/lib/
99drivers-y += drivers/s390/
100
101# must be linked after kernel
102drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/
103
104boot := arch/s390/boot
105
106all: image bzImage
107
108install: vmlinux
109 $(Q)$(MAKE) $(build)=$(boot) $@
110
111image bzImage: vmlinux
112 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
113
114zfcpdump:
115 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
116
117vdso_install:
118ifeq ($(CONFIG_64BIT),y)
119 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
120endif
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