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
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
13 # Copyright (C) 1994 by Linus Torvalds
17 LDFLAGS
:= -m elf_s390
22 CHECKFLAGS
+= -D__s390__
-msize-long
24 LDFLAGS
:= -m elf64_s390
25 KBUILD_AFLAGS_MODULE
+= -fpic
-D__PIC__
26 KBUILD_CFLAGS_MODULE
+= -fpic
-D__PIC__
31 CHECKFLAGS
+= -D__s390__
-D__s390x__
34 cflags-
$(CONFIG_MARCH_G5
) += $(call cc-option
,-march
=g5
)
35 cflags-
$(CONFIG_MARCH_Z900
) += $(call cc-option
,-march
=z900
)
36 cflags-
$(CONFIG_MARCH_Z990
) += $(call cc-option
,-march
=z990
)
37 cflags-
$(CONFIG_MARCH_Z9_109
) += $(call cc-option
,-march
=z9-109
)
38 cflags-
$(CONFIG_MARCH_Z10
) += $(call cc-option
,-march
=z10
)
40 #KBUILD_IMAGE is necessary for make rpm
41 KBUILD_IMAGE
:=arch
/s390
/boot
/image
44 # Prevent tail-call optimizations, to get clearer backtraces:
46 cflags-
$(CONFIG_FRAME_POINTER
) += -fno-optimize-sibling-calls
48 # old style option for packed stacks
49 ifeq ($(call cc-option-yn
,-mkernel-backchain
),y
)
50 cflags-
$(CONFIG_PACK_STACK
) += -mkernel-backchain
-D__PACK_STACK
51 aflags-
$(CONFIG_PACK_STACK
) += -D__PACK_STACK
52 cflags-
$(CONFIG_SMALL_STACK
) += -D__SMALL_STACK
53 aflags-
$(CONFIG_SMALL_STACK
) += -D__SMALL_STACK
54 ifdef CONFIG_SMALL_STACK
55 STACK_SIZE
:= $(shell echo
$$(($(STACK_SIZE
)/2)) )
59 # new style option for packed stacks
60 ifeq ($(call cc-option-yn
,-mpacked-stack
),y
)
61 cflags-
$(CONFIG_PACK_STACK
) += -mpacked-stack
-D__PACK_STACK
62 aflags-
$(CONFIG_PACK_STACK
) += -D__PACK_STACK
63 cflags-
$(CONFIG_SMALL_STACK
) += -D__SMALL_STACK
64 aflags-
$(CONFIG_SMALL_STACK
) += -D__SMALL_STACK
65 ifdef CONFIG_SMALL_STACK
66 STACK_SIZE
:= $(shell echo
$$(($(STACK_SIZE
)/2)) )
70 ifeq ($(call cc-option-yn
,-mstack-size
=8192 -mstack-guard
=128),y
)
71 cflags-
$(CONFIG_CHECK_STACK
) += -mstack-size
=$(STACK_SIZE
)
72 ifneq ($(call cc-option-yn
,-mstack-size
=8192),y
)
73 cflags-
$(CONFIG_CHECK_STACK
) += -mstack-guard
=$(CONFIG_STACK_GUARD
)
77 ifeq ($(call cc-option-yn
,-mwarn-dynamicstack
),y
)
78 cflags-
$(CONFIG_WARN_STACK
) += -mwarn-dynamicstack
79 cflags-
$(CONFIG_WARN_STACK
) += -mwarn-framesize
=$(CONFIG_WARN_STACK_SIZE
)
82 KBUILD_CFLAGS
+= -mbackchain
-msoft-float
$(cflags-y
)
83 KBUILD_CFLAGS
+= -pipe
-fno-strength-reduce
-Wno-sign-compare
84 KBUILD_AFLAGS
+= $(aflags-y
)
86 OBJCOPYFLAGS
:= -O binary
87 LDFLAGS_vmlinux
:= -e start
89 head-y
:= arch
/s390
/kernel
/head.o arch
/s390
/kernel
/init_task.o
91 core-y
+= arch
/s390
/mm
/ arch
/s390
/kernel
/ arch
/s390
/crypto
/ \
92 arch
/s390
/appldata
/ arch
/s390
/hypfs
/ arch
/s390
/kvm
/
94 libs-y
+= arch
/s390
/lib
/
95 drivers-y
+= drivers
/s390
/
96 drivers-
$(CONFIG_MATHEMU
) += arch
/s390
/math-emu
/
98 # must be linked after kernel
99 drivers-
$(CONFIG_OPROFILE
) += arch
/s390
/oprofile
/
101 boot
:= arch
/s390
/boot
106 $(Q
)$(MAKE
) $(build
)=$(boot
) $@
109 $(Q
)$(MAKE
) $(build
)=$(boot
) $(boot
)/$@
112 $(Q
)$(MAKE
) $(build
)=$(boot
) $(boot
)/$@
115 $(Q
)$(MAKE
) $(clean)=$(boot
)
117 # Don't use tabs in echo arguments
119 echo
'* image - Kernel image for IPL ($(boot)/image)'