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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
18CFLAGS += -m31
19AFLAGS += -m31
20UTS_MACHINE := s390
21STACK_SIZE := 8192
viro@ZenIV.linux.org.ukd310a352005-09-09 16:56:05 +010022CHECKFLAGS += -D__s390__
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -080023else
Linus Torvalds1da177e2005-04-16 15:20:36 -070024LDFLAGS := -m elf64_s390
25MODFLAGS += -fpic -D__PIC__
26CFLAGS += -m64
27AFLAGS += -m64
28UTS_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) += $(call cc-option,-march=z9-109)
Linus Torvalds1da177e2005-04-16 15:20:36 -070037
Christian Borntraeger1681ced2006-12-04 15:40:49 +010038#KBUILD_IMAGE is necessary for make rpm
39KBUILD_IMAGE :=arch/s390/boot/image
40
Heiko Carstenscbbd1fa2006-07-03 00:24:38 -070041#
42# Prevent tail-call optimizations, to get clearer backtraces:
43#
44cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
45
Linus Torvalds1da177e2005-04-16 15:20:36 -070046# old style option for packed stacks
47ifeq ($(call cc-option-yn,-mkernel-backchain),y)
48cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK
49aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
50cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
51aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
52ifdef CONFIG_SMALL_STACK
53STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
54endif
55endif
56
57# new style option for packed stacks
58ifeq ($(call cc-option-yn,-mpacked-stack),y)
59cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK
60aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
61cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
62aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
63ifdef CONFIG_SMALL_STACK
64STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
65endif
66endif
67
68ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
69cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
70cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
71endif
72
73ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
74cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack
75cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE)
76endif
77
78CFLAGS += -mbackchain -msoft-float $(cflags-y)
Linus Torvalds1da177e2005-04-16 15:20:36 -070079CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
80AFLAGS += $(aflags-y)
81
82OBJCOPYFLAGS := -O binary
83LDFLAGS_vmlinux := -e start
84
Michael Holzheu4562c9f2007-02-21 10:55:46 +010085head-y := arch/s390/kernel/head.o arch/s390/kernel/init_task.o
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
Michael Holzheu4562c9f2007-02-21 10:55:46 +010087core-y += arch/s390/mm/ arch/s390/kernel/ arch/s390/crypto/ \
88 arch/s390/appldata/ arch/s390/hypfs/
89libs-y += arch/s390/lib/
Linus Torvalds1da177e2005-04-16 15:20:36 -070090drivers-y += drivers/s390/
Michael Holzheu4562c9f2007-02-21 10:55:46 +010091drivers-$(CONFIG_MATHEMU) += arch/s390/math-emu/
Linus Torvalds1da177e2005-04-16 15:20:36 -070092
93# must be linked after kernel
94drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/
95
Michael Holzheu4562c9f2007-02-21 10:55:46 +010096boot := arch/s390/boot
Linus Torvalds1da177e2005-04-16 15:20:36 -070097
98all: image
99
100install: vmlinux
101 $(Q)$(MAKE) $(build)=$(boot) $@
102
103image: vmlinux
104 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
105
106archclean:
107 $(Q)$(MAKE) $(clean)=$(boot)
108
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109# Don't use tabs in echo arguments
110define archhelp
111 echo '* image - Kernel image for IPL ($(boot)/image)'
112endef