summaryrefslogtreecommitdiff
path: root/arch/s390/Makefile
blob: 68a690442be052cd4eeaf565442c2b67e9367f74 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
# SPDX-License-Identifier: GPL-2.0
#
# s390/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture
#
# Copyright (C) 1994 by Linus Torvalds
#

LD_BFD		:= elf64-s390
LDFLAGS		:= -m elf64_s390
KBUILD_AFLAGS_MODULE += -fPIC
KBUILD_CFLAGS_MODULE += -fPIC
KBUILD_CFLAGS	+= -m64
KBUILD_AFLAGS	+= -m64
UTS_MACHINE	:= s390x
STACK_SIZE	:= 16384
CHECKFLAGS	+= -D__s390__ -D__s390x__

export LD_BFD

mflags-$(CONFIG_MARCH_Z900)   := -march=z900
mflags-$(CONFIG_MARCH_Z990)   := -march=z990
mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109
mflags-$(CONFIG_MARCH_Z10)    := -march=z10
mflags-$(CONFIG_MARCH_Z196)   := -march=z196
mflags-$(CONFIG_MARCH_ZEC12)  := -march=zEC12
mflags-$(CONFIG_MARCH_Z13)    := -march=z13
mflags-$(CONFIG_MARCH_Z14)    := -march=z14

export CC_FLAGS_MARCH := $(mflags-y)

aflags-y += $(mflags-y)
cflags-y += $(mflags-y)

cflags-$(CONFIG_MARCH_Z900_TUNE)	+= -mtune=z900
cflags-$(CONFIG_MARCH_Z990_TUNE)	+= -mtune=z990
cflags-$(CONFIG_MARCH_Z9_109_TUNE)	+= -mtune=z9-109
cflags-$(CONFIG_MARCH_Z10_TUNE)		+= -mtune=z10
cflags-$(CONFIG_MARCH_Z196_TUNE)	+= -mtune=z196
cflags-$(CONFIG_MARCH_ZEC12_TUNE)	+= -mtune=zEC12
cflags-$(CONFIG_MARCH_Z13_TUNE)		+= -mtune=z13
cflags-$(CONFIG_MARCH_Z14_TUNE)		+= -mtune=z14

cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include

#
# Prevent tail-call optimizations, to get clearer backtraces:
#
cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls

# old style option for packed stacks
ifeq ($(call cc-option-yn,-mkernel-backchain),y)
cflags-$(CONFIG_PACK_STACK)  += -mkernel-backchain -D__PACK_STACK
aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
endif

# new style option for packed stacks
ifeq ($(call cc-option-yn,-mpacked-stack),y)
cflags-$(CONFIG_PACK_STACK)  += -mpacked-stack -D__PACK_STACK
aflags-$(CONFIG_PACK_STACK)  += -D__PACK_STACK
endif

ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
ifneq ($(call cc-option-yn,-mstack-size=8192),y)
cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
endif
endif

ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack
endif

ifdef CONFIG_EXPOLINE
  ifeq ($(call cc-option-yn,$(CC_FLAGS_MARCH) -mindirect-branch=thunk),y)
    CC_FLAGS_EXPOLINE := -mindirect-branch=thunk
    CC_FLAGS_EXPOLINE += -mfunction-return=thunk
    CC_FLAGS_EXPOLINE += -mindirect-branch-table
    export CC_FLAGS_EXPOLINE
    cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_EXPOLINE
  endif
endif

ifdef CONFIG_FUNCTION_TRACER
# make use of hotpatch feature if the compiler supports it
cc_hotpatch	:= -mhotpatch=0,3
ifeq ($(call cc-option-yn,$(cc_hotpatch)),y)
CC_FLAGS_FTRACE := $(cc_hotpatch)
KBUILD_AFLAGS	+= -DCC_USING_HOTPATCH
KBUILD_CFLAGS	+= -DCC_USING_HOTPATCH
endif
endif

# Test CFI features of binutils
cfi := $(call as-instr,.cfi_startproc\n.cfi_val_offset 15$(comma)-160\n.cfi_endproc,-DCONFIG_AS_CFI_VAL_OFFSET=1)

KBUILD_CFLAGS	+= -mbackchain -msoft-float $(cflags-y)
KBUILD_CFLAGS	+= -pipe -fno-strength-reduce -Wno-sign-compare
KBUILD_CFLAGS	+= -fno-asynchronous-unwind-tables $(cfi)
KBUILD_AFLAGS	+= $(aflags-y) $(cfi)

OBJCOPYFLAGS	:= -O binary

head-y		:= arch/s390/kernel/head.o
head-y		+= arch/s390/kernel/head64.o

# See arch/s390/Kbuild for content of core part of the kernel
core-y		+= arch/s390/

libs-y		+= arch/s390/lib/
drivers-y	+= drivers/s390/

# must be linked after kernel
drivers-$(CONFIG_OPROFILE)	+= arch/s390/oprofile/

boot		:= arch/s390/boot
syscalls	:= arch/s390/kernel/syscalls
tools		:= arch/s390/tools

all: image bzImage

#KBUILD_IMAGE is necessary for packaging targets like rpm-pkg, deb-pkg...
KBUILD_IMAGE	:= $(boot)/bzImage

install: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) $@

image bzImage: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@

zfcpdump:
	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@

vdso_install:
	$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
	$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@

archclean:
	$(Q)$(MAKE) $(clean)=$(boot)
	$(Q)$(MAKE) $(clean)=$(tools)

archheaders:
	$(Q)$(MAKE) $(build)=$(syscalls) uapi

archprepare:
	$(Q)$(MAKE) $(build)=$(syscalls) kapi
	$(Q)$(MAKE) $(build)=$(tools) kapi

# Don't use tabs in echo arguments
define archhelp
  echo  '* image           - Kernel image for IPL ($(boot)/image)'
  echo	'* bzImage         - Compressed kernel image for IPL ($(boot)/bzImage)'
  echo	'  install         - Install kernel using'
  echo	'                    (your) ~/bin/$(INSTALLKERNEL) or'
  echo	'                    (distribution) /sbin/$(INSTALLKERNEL) or'
  echo	'                    install to $$(INSTALL_PATH)'
endef