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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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017LDFLAGS := -m elf_s390
Sam Ravnborga0f97e02007-10-14 22:21:35 +020018KBUILD_CFLAGS += -m31
Sam Ravnborg222d3942007-10-15 21:59:31 +020019KBUILD_AFLAGS += -m31
Linus Torvalds1da177e2005-04-16 15:20:36 -070020UTS_MACHINE := s390
21STACK_SIZE := 8192
Al Viro22bb3e92007-07-15 21:00:41 +010022CHECKFLAGS += -D__s390__ -msize-long
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -080023else
Linus Torvalds1da177e2005-04-16 15:20:36 -070024LDFLAGS := -m elf64_s390
25MODFLAGS += -fpic -D__PIC__
Sam Ravnborga0f97e02007-10-14 22:21:35 +020026KBUILD_CFLAGS += -m64
Sam Ravnborg222d3942007-10-15 21:59:31 +020027KBUILD_AFLAGS += -m64
Linus Torvalds1da177e2005-04-16 15:20:36 -070028UTS_MACHINE := s390x
29STACK_SIZE := 16384
viro@ZenIV.linux.org.ukd310a352005-09-09 16:56:05 +010030CHECKFLAGS += -D__s390__ -D__s390x__
Linus Torvalds1da177e2005-04-16 15:20:36 -070031endif
32
33cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5)
34cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900)
35cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990)
Christian Borntraeger0efa4702006-09-28 16:55:46 +020036cflags-$(CONFIG_MARCH_Z9_109) += $(call cc-option,-march=z9-109)
Martin Schwidefskye37f50e2008-12-25 13:39:19 +010037cflags-$(CONFIG_MARCH_Z10) += $(call cc-option,-march=z10)
Linus Torvalds1da177e2005-04-16 15:20:36 -070038
Christian Borntraeger1681ced2006-12-04 15:40:49 +010039#KBUILD_IMAGE is necessary for make rpm
40KBUILD_IMAGE :=arch/s390/boot/image
41
Heiko Carstenscbbd1fa2006-07-03 00:24:38 -070042#
43# Prevent tail-call optimizations, to get clearer backtraces:
44#
45cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
46
Linus Torvalds1da177e2005-04-16 15:20:36 -070047# old style option for packed stacks
48ifeq ($(call cc-option-yn,-mkernel-backchain),y)
49cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK
50aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
51cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
52aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
53ifdef CONFIG_SMALL_STACK
54STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
55endif
56endif
57
58# new style option for packed stacks
59ifeq ($(call cc-option-yn,-mpacked-stack),y)
60cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK
61aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
62cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
63aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
64ifdef CONFIG_SMALL_STACK
65STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
66endif
67endif
68
69ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
70cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
Martin Schwidefskybe796282007-04-27 16:01:46 +020071ifneq ($(call cc-option-yn,-mstack-size=8192),y)
Linus Torvalds1da177e2005-04-16 15:20:36 -070072cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
73endif
Martin Schwidefskybe796282007-04-27 16:01:46 +020074endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070075
76ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
77cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack
78cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE)
79endif
80
Sam Ravnborga0f97e02007-10-14 22:21:35 +020081KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y)
82KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
Sam Ravnborg222d3942007-10-15 21:59:31 +020083KBUILD_AFLAGS += $(aflags-y)
Linus Torvalds1da177e2005-04-16 15:20:36 -070084
85OBJCOPYFLAGS := -O binary
86LDFLAGS_vmlinux := -e start
87
Michael Holzheu4562c9f2007-02-21 10:55:46 +010088head-y := arch/s390/kernel/head.o arch/s390/kernel/init_task.o
Linus Torvalds1da177e2005-04-16 15:20:36 -070089
Michael Holzheu4562c9f2007-02-21 10:55:46 +010090core-y += arch/s390/mm/ arch/s390/kernel/ arch/s390/crypto/ \
Heiko Carstensb0c632d2008-03-25 18:47:20 +010091 arch/s390/appldata/ arch/s390/hypfs/ arch/s390/kvm/
Michael Holzheu4562c9f2007-02-21 10:55:46 +010092libs-y += arch/s390/lib/
Linus Torvalds1da177e2005-04-16 15:20:36 -070093drivers-y += drivers/s390/
Michael Holzheu4562c9f2007-02-21 10:55:46 +010094drivers-$(CONFIG_MATHEMU) += arch/s390/math-emu/
Linus Torvalds1da177e2005-04-16 15:20:36 -070095
96# must be linked after kernel
97drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/
98
Michael Holzheu4562c9f2007-02-21 10:55:46 +010099boot := arch/s390/boot
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100
101all: image
102
103install: vmlinux
104 $(Q)$(MAKE) $(build)=$(boot) $@
105
106image: vmlinux
107 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
108
Michael Holzheu411ed322007-04-27 16:01:49 +0200109zfcpdump:
110 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
111
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112archclean:
113 $(Q)$(MAKE) $(clean)=$(boot)
114
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115# Don't use tabs in echo arguments
116define archhelp
117 echo '* image - Kernel image for IPL ($(boot)/image)'
118endef