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__
24 LDFLAGS
:= -m elf64_s390
25 MODFLAGS
+= -fpic
-D__PIC__
30 CHECKFLAGS
+= -D__s390__
-D__s390x__
33 cflags-
$(CONFIG_MARCH_G5
) += $(call cc-option
,-march
=g5
)
34 cflags-
$(CONFIG_MARCH_Z900
) += $(call cc-option
,-march
=z900
)
35 cflags-
$(CONFIG_MARCH_Z990
) += $(call cc-option
,-march
=z990
)
37 # old style option for packed stacks
38 ifeq ($(call cc-option-yn
,-mkernel-backchain
),y
)
39 cflags-
$(CONFIG_PACK_STACK
) += -mkernel-backchain
-D__PACK_STACK
40 aflags-
$(CONFIG_PACK_STACK
) += -D__PACK_STACK
41 cflags-
$(CONFIG_SMALL_STACK
) += -D__SMALL_STACK
42 aflags-
$(CONFIG_SMALL_STACK
) += -D__SMALL_STACK
43 ifdef CONFIG_SMALL_STACK
44 STACK_SIZE
:= $(shell echo
$$(($(STACK_SIZE
)/2)) )
48 # new style option for packed stacks
49 ifeq ($(call cc-option-yn
,-mpacked-stack
),y
)
50 cflags-
$(CONFIG_PACK_STACK
) += -mpacked-stack
-D__PACK_STACK
51 aflags-
$(CONFIG_PACK_STACK
) += -D__PACK_STACK
52 cflags-
$(CONFIG_SMALL_STACK
) += -D__SMALL_STACK
53 aflags-
$(CONFIG_SMALL_STACK
) += -D__SMALL_STACK
54 ifdef CONFIG_SMALL_STACK
55 STACK_SIZE
:= $(shell echo
$$(($(STACK_SIZE
)/2)) )
59 ifeq ($(call cc-option-yn
,-mstack-size
=8192 -mstack-guard
=128),y
)
60 cflags-
$(CONFIG_CHECK_STACK
) += -mstack-size
=$(STACK_SIZE
)
61 cflags-
$(CONFIG_CHECK_STACK
) += -mstack-guard
=$(CONFIG_STACK_GUARD
)
64 ifeq ($(call cc-option-yn
,-mwarn-dynamicstack
),y
)
65 cflags-
$(CONFIG_WARN_STACK
) += -mwarn-dynamicstack
66 cflags-
$(CONFIG_WARN_STACK
) += -mwarn-framesize
=$(CONFIG_WARN_STACK_SIZE
)
69 CFLAGS
+= -mbackchain
-msoft-float
$(cflags-y
)
70 CFLAGS
+= $(call cc-option
,-finline-limit
=10000)
71 CFLAGS
+= -pipe
-fno-strength-reduce
-Wno-sign-compare
74 OBJCOPYFLAGS
:= -O binary
75 LDFLAGS_vmlinux
:= -e start
77 head-y
:= arch
/$(ARCH
)/kernel
/head.o arch
/$(ARCH
)/kernel
/init_task.o
79 core-y
+= arch
/$(ARCH
)/mm
/ arch
/$(ARCH
)/kernel
/ arch
/$(ARCH
)/crypto
/ \
80 arch
/$(ARCH
)/appldata
/
81 libs-y
+= arch
/$(ARCH
)/lib
/
82 drivers-y
+= drivers
/s390
/
83 drivers-
$(CONFIG_MATHEMU
) += arch
/$(ARCH
)/math-emu
/
85 # must be linked after kernel
86 drivers-
$(CONFIG_OPROFILE
) += arch
/s390
/oprofile
/
88 boot
:= arch
/$(ARCH
)/boot
93 $(Q
)$(MAKE
) $(build
)=$(boot
) $@
96 $(Q
)$(MAKE
) $(build
)=$(boot
) $(boot
)/$@
99 $(Q
)$(MAKE
) $(clean)=$(boot
)
101 # Don't use tabs in echo arguments
103 echo
'* image - Kernel image for IPL ($(boot)/image)'