xref: /openbmc/linux/arch/s390/Makefile (revision d5cb9783536a41df9f9cba5b0a1d78047ed787f7)
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
16ifdef CONFIG_ARCH_S390_31
17LDFLAGS		:= -m elf_s390
18CFLAGS		+= -m31
19AFLAGS		+= -m31
20UTS_MACHINE	:= s390
21STACK_SIZE	:= 8192
22CHECKFLAGS	+= -D__s390__
23endif
24
25ifdef CONFIG_ARCH_S390X
26LDFLAGS		:= -m elf64_s390
27MODFLAGS	+= -fpic -D__PIC__
28CFLAGS		+= -m64
29AFLAGS		+= -m64
30UTS_MACHINE	:= s390x
31STACK_SIZE	:= 16384
32CHECKFLAGS	+= -D__s390__ -D__s390x__
33endif
34
35cflags-$(CONFIG_MARCH_G5)   += $(call cc-option,-march=g5)
36cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900)
37cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990)
38
39# old style option for packed stacks
40ifeq ($(call cc-option-yn,-mkernel-backchain),y)
41cflags-$(CONFIG_PACK_STACK)  += -mkernel-backchain -D__PACK_STACK
42aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
43cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
44aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
45ifdef CONFIG_SMALL_STACK
46STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
47endif
48endif
49
50# new style option for packed stacks
51ifeq ($(call cc-option-yn,-mpacked-stack),y)
52cflags-$(CONFIG_PACK_STACK)  += -mpacked-stack -D__PACK_STACK
53aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
54cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
55aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
56ifdef CONFIG_SMALL_STACK
57STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
58endif
59endif
60
61ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
62cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
63cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
64endif
65
66ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
67cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack
68cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE)
69endif
70
71CFLAGS		+= -mbackchain -msoft-float $(cflags-y)
72CFLAGS		+= $(call cc-option,-finline-limit=10000)
73CFLAGS 		+= -pipe -fno-strength-reduce -Wno-sign-compare
74AFLAGS		+= $(aflags-y)
75
76OBJCOPYFLAGS	:= -O binary
77LDFLAGS_vmlinux := -e start
78
79head-$(CONFIG_ARCH_S390_31)	+= arch/$(ARCH)/kernel/head.o
80head-$(CONFIG_ARCH_S390X)	+= arch/$(ARCH)/kernel/head64.o
81head-y				+= arch/$(ARCH)/kernel/init_task.o
82
83core-y		+= arch/$(ARCH)/mm/ arch/$(ARCH)/kernel/ arch/$(ARCH)/crypto/ \
84		   arch/$(ARCH)/appldata/
85libs-y		+= arch/$(ARCH)/lib/
86drivers-y	+= drivers/s390/
87drivers-$(CONFIG_MATHEMU) += arch/$(ARCH)/math-emu/
88
89# must be linked after kernel
90drivers-$(CONFIG_OPROFILE)	+= arch/s390/oprofile/
91
92boot		:= arch/$(ARCH)/boot
93
94all: image
95
96install: vmlinux
97	$(Q)$(MAKE) $(build)=$(boot) $@
98
99image: vmlinux
100	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
101
102archclean:
103	$(Q)$(MAKE) $(clean)=$(boot)
104
105# Don't use tabs in echo arguments
106define archhelp
107  echo  '* image           - Kernel image for IPL ($(boot)/image)'
108endef
109