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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
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
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -080016ifndef CONFIG_64BIT
Martin Schwidefsky1844c9b2010-02-26 22:37:53 +010017LD_BFD := elf32-s390
Linus Torvalds1da177e2005-04-16 15:20:36 -070018LDFLAGS := -m elf_s390
Sam Ravnborga0f97e02007-10-14 22:21:35 +020019KBUILD_CFLAGS += -m31
Sam Ravnborg222d3942007-10-15 21:59:31 +020020KBUILD_AFLAGS += -m31
Linus Torvalds1da177e2005-04-16 15:20:36 -070021UTS_MACHINE := s390
22STACK_SIZE := 8192
Al Viro22bb3e92007-07-15 21:00:41 +010023CHECKFLAGS += -D__s390__ -msize-long
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -080024else
Martin Schwidefsky1844c9b2010-02-26 22:37:53 +010025LD_BFD := elf64-s390
Linus Torvalds1da177e2005-04-16 15:20:36 -070026LDFLAGS := -m elf64_s390
Sam Ravnborg65881692010-07-28 17:33:09 +020027KBUILD_AFLAGS_MODULE += -fpic -D__PIC__
28KBUILD_CFLAGS_MODULE += -fpic -D__PIC__
Sam Ravnborga0f97e02007-10-14 22:21:35 +020029KBUILD_CFLAGS += -m64
Sam Ravnborg222d3942007-10-15 21:59:31 +020030KBUILD_AFLAGS += -m64
Linus Torvalds1da177e2005-04-16 15:20:36 -070031UTS_MACHINE := s390x
32STACK_SIZE := 16384
viro@ZenIV.linux.org.ukd310a352005-09-09 16:56:05 +010033CHECKFLAGS += -D__s390__ -D__s390x__
Linus Torvalds1da177e2005-04-16 15:20:36 -070034endif
35
Martin Schwidefsky1844c9b2010-02-26 22:37:53 +010036export LD_BFD
37
Linus Torvalds1da177e2005-04-16 15:20:36 -070038cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5)
39cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900)
40cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990)
Christian Borntraeger0efa4702006-09-28 16:55:46 +020041cflags-$(CONFIG_MARCH_Z9_109) += $(call cc-option,-march=z9-109)
Martin Schwidefskye37f50e2008-12-25 13:39:19 +010042cflags-$(CONFIG_MARCH_Z10) += $(call cc-option,-march=z10)
Heiko Carstensf861e402010-10-25 16:10:17 +020043cflags-$(CONFIG_MARCH_Z196) += $(call cc-option,-march=z196)
Linus Torvalds1da177e2005-04-16 15:20:36 -070044
Christian Borntraeger1681ced2006-12-04 15:40:49 +010045#KBUILD_IMAGE is necessary for make rpm
46KBUILD_IMAGE :=arch/s390/boot/image
47
Heiko Carstenscbbd1fa2006-07-03 00:24:38 -070048#
49# Prevent tail-call optimizations, to get clearer backtraces:
50#
51cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
52
Linus Torvalds1da177e2005-04-16 15:20:36 -070053# 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)
Martin Schwidefskybe796282007-04-27 16:01:46 +020077ifneq ($(call cc-option-yn,-mstack-size=8192),y)
Linus Torvalds1da177e2005-04-16 15:20:36 -070078cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
79endif
Martin Schwidefskybe796282007-04-27 16:01:46 +020080endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070081
82ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
Jan Glauber2c190da2011-03-15 17:08:19 +010083cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack
Linus Torvalds1da177e2005-04-16 15:20:36 -070084endif
85
Sam Ravnborga0f97e02007-10-14 22:21:35 +020086KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y)
87KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
Sam Ravnborg222d3942007-10-15 21:59:31 +020088KBUILD_AFLAGS += $(aflags-y)
Linus Torvalds1da177e2005-04-16 15:20:36 -070089
90OBJCOPYFLAGS := -O binary
91LDFLAGS_vmlinux := -e start
92
Martin Schwidefsky1844c9b2010-02-26 22:37:53 +010093head-y := arch/s390/kernel/head.o
94head-y += arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o)
95head-y += arch/s390/kernel/init_task.o
Linus Torvalds1da177e2005-04-16 15:20:36 -070096
Heiko Carstens01485942010-10-25 16:10:09 +020097# See arch/s390/Kbuild for content of core part of the kernel
98core-y += arch/s390/
Hans-Joachim Picht155af2f2009-06-16 10:30:52 +020099
Michael Holzheu4562c9f2007-02-21 10:55:46 +0100100libs-y += arch/s390/lib/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101drivers-y += drivers/s390/
Michael Holzheu4562c9f2007-02-21 10:55:46 +0100102drivers-$(CONFIG_MATHEMU) += arch/s390/math-emu/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103
104# must be linked after kernel
105drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/
106
Michael Holzheu4562c9f2007-02-21 10:55:46 +0100107boot := arch/s390/boot
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108
Martin Schwidefsky1844c9b2010-02-26 22:37:53 +0100109all: image bzImage
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110
111install: vmlinux
112 $(Q)$(MAKE) $(build)=$(boot) $@
113
Martin Schwidefsky1844c9b2010-02-26 22:37:53 +0100114image bzImage: vmlinux
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
116
Michael Holzheu411ed322007-04-27 16:01:49 +0200117zfcpdump:
118 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
119
Hendrik Bruecknerf3cb31e2010-05-17 10:00:09 +0200120vdso_install:
121ifeq ($(CONFIG_64BIT),y)
122 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
123endif
124 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
125
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126archclean:
127 $(Q)$(MAKE) $(clean)=$(boot)
128
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129# Don't use tabs in echo arguments
130define archhelp
131 echo '* image - Kernel image for IPL ($(boot)/image)'
Martin Schwidefsky1844c9b2010-02-26 22:37:53 +0100132 echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)'
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133endef