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
16 ifdef CONFIG_ARCH_S390_31
17 LDFLAGS
:= -m elf_s390
22 CHECKFLAGS
+= -D__s390__
25 ifdef CONFIG_ARCH_S390X
26 LDFLAGS
:= -m elf64_s390
27 MODFLAGS
+= -fpic
-D__PIC__
32 CHECKFLAGS
+= -D__s390__
-D__s390x__
35 cflags-
$(CONFIG_MARCH_G5
) += $(call cc-option
,-march
=g5
)
36 cflags-
$(CONFIG_MARCH_Z900
) += $(call cc-option
,-march
=z900
)
37 cflags-
$(CONFIG_MARCH_Z990
) += $(call cc-option
,-march
=z990
)
39 # old style option for packed stacks
40 ifeq ($(call cc-option-yn
,-mkernel-backchain
),y
)
41 cflags-
$(CONFIG_PACK_STACK
) += -mkernel-backchain
-D__PACK_STACK
42 aflags-
$(CONFIG_PACK_STACK
) += -D__PACK_STACK
43 cflags-
$(CONFIG_SMALL_STACK
) += -D__SMALL_STACK
44 aflags-
$(CONFIG_SMALL_STACK
) += -D__SMALL_STACK
45 ifdef CONFIG_SMALL_STACK
46 STACK_SIZE
:= $(shell echo
$$(($(STACK_SIZE
)/2)) )
50 # new style option for packed stacks
51 ifeq ($(call cc-option-yn
,-mpacked-stack
),y
)
52 cflags-
$(CONFIG_PACK_STACK
) += -mpacked-stack
-D__PACK_STACK
53 aflags-
$(CONFIG_PACK_STACK
) += -D__PACK_STACK
54 cflags-
$(CONFIG_SMALL_STACK
) += -D__SMALL_STACK
55 aflags-
$(CONFIG_SMALL_STACK
) += -D__SMALL_STACK
56 ifdef CONFIG_SMALL_STACK
57 STACK_SIZE
:= $(shell echo
$$(($(STACK_SIZE
)/2)) )
61 ifeq ($(call cc-option-yn
,-mstack-size
=8192 -mstack-guard
=128),y
)
62 cflags-
$(CONFIG_CHECK_STACK
) += -mstack-size
=$(STACK_SIZE
)
63 cflags-
$(CONFIG_CHECK_STACK
) += -mstack-guard
=$(CONFIG_STACK_GUARD
)
66 ifeq ($(call cc-option-yn
,-mwarn-dynamicstack
),y
)
67 cflags-
$(CONFIG_WARN_STACK
) += -mwarn-dynamicstack
68 cflags-
$(CONFIG_WARN_STACK
) += -mwarn-framesize
=$(CONFIG_WARN_STACK_SIZE
)
71 CFLAGS
+= -mbackchain
-msoft-float
$(cflags-y
)
72 CFLAGS
+= $(call cc-option
,-finline-limit
=10000)
73 CFLAGS
+= -pipe
-fno-strength-reduce
-Wno-sign-compare
76 OBJCOPYFLAGS
:= -O binary
77 LDFLAGS_vmlinux
:= -e start
79 head-y
:= arch
/$(ARCH
)/kernel
/head.o arch
/$(ARCH
)/kernel
/init_task.o
81 core-y
+= arch
/$(ARCH
)/mm
/ arch
/$(ARCH
)/kernel
/ arch
/$(ARCH
)/crypto
/ \
82 arch
/$(ARCH
)/appldata
/
83 libs-y
+= arch
/$(ARCH
)/lib
/
84 drivers-y
+= drivers
/s390
/
85 drivers-
$(CONFIG_MATHEMU
) += arch
/$(ARCH
)/math-emu
/
87 # must be linked after kernel
88 drivers-
$(CONFIG_OPROFILE
) += arch
/s390
/oprofile
/
90 boot
:= arch
/$(ARCH
)/boot
95 $(Q
)$(MAKE
) $(build
)=$(boot
) $@
98 $(Q
)$(MAKE
) $(build
)=$(boot
) $(boot
)/$@
101 $(Q
)$(MAKE
) $(clean)=$(boot
)
103 # Don't use tabs in echo arguments
105 echo
'* image - Kernel image for IPL ($(boot)/image)'